HomeMy WebLinkAboutSEPA EPIC-31-91 - CITY OF TUKWILA - STORM WATER MANAGEMENTSTORM WATER
MANAGEMENT ORDINANCE
REGULATING ALL STORM
WATER IMPACTS ON PRIVATE
PROPERTY
CITY -WIDE
EPIC 31 -91
Utilities Committee
9 -21 -041 Storm Water Management Ordinance
9 -8 -04
11 -18 -03 Utility Rate Comparisons for Surface Water
10 -7 -03 Comprehensive Surface Water Management Plan
3-4 -03 NPDES Phase II Stormwater Permit Application
11 -19 -02 Utility Rate Comparisons
11 -19 -02 Stormwater Management Policies for Detention Facilities
9 -17 -02 Consultant Agreement for Surface Water Management Comprehensive Plan
Amendment
9 -18 -01 Utility Rates for Water, Sewer and Surface Water
11 -7 -00 Gilliam Creek Basin — Stormwater Management Plan
10 -3 -00 Utility Rates Comparison
11 -22 -99 Surface Water Response Letters
10 -25 -99 Surface Water Workshops (flyer)
10 -11 -99 Surface Water Rate Increase
9 -27 -99 Surface Water Rate Increase
10 -6 -98 Consultant Selection for Gilliam Creek Stormwater Quality Management Plan
6 -16 -98 Riverton Stormwater Quality Management Plan, Advisory Committee
5 -19 -98 Riverton Stormwater Quality Management Plan Presentation
8 -5 -97 Riverton Stormwater Quality Management Plan
11 -13 -96 November 12 Surface Water Rate Hearing (Review) (no attachments)
9 -24 -96 Surface Water Rate Increase
7 -23 -96 Utility Rate Increases — Surface Water
3 -12 -96 Fostoria Stormwater Quality Management Plan
2 -27 -96 Utility Rates
11 -7 -95 Surface Water Ordinance
8 -22 -95 Surface Water Management Ordinance (no attachment)
7 -18 -95 Surface Water Management Ordinance
7 -5 -95 Surface Water Management Ordinance WLcAc QC'CJ 1VlcoAce
5 -2 -95 Surface Water Management Ordinance
4-4 -95 Surface Water Management Ordinance
3 -21 -95 Surface Water Ordinance
3 -7 -95 Surface Water Management Ordinance
2 -7 -95 Riverton Creek Storm Water Quality Management Plan Centennial Clean Water Fund
Grant Agreement
11 -15 -94 Surface Water Billing Ordinance
9 -13 -94 Surface Water Discussion (no attachment)
7 -12 -94 Surface Water Discussion (no attachment) Discuss local, regional,
& citywide drainage issues
6 -28 -94 Surface Water Discussion (no attachment) to set priorities
6 -14 -94 Surface Water Discussion (no attachment)
1 -25 -94 Fostoria Stormwater Quality Management Plan Grant Agreement
INFORMATION MEMO
TO: Mayor Mullet
FROM: Public Works Director
DATE: November 19, 2003
SUBJECT: Surface Water Rate Review
ISSUE
Annual review of surface water rates for Tukwila and other jurisdictions.
BACKGROUND
The Public Works Department has reviewed surface water rates charged by other selected
western Washington cities for single family residences. The following information was
obtained from the AWC 2003 Tax & User Fee Survey Part IV / Water, Sewer, &
Stormwater Fees, published by the Association of Washington Cities.
{
SURFACE WATER RATES
' cat' R Ciiy' tt.- ' >`` a =Ck
a.ra:: ste=er' +�
;V '-= ?Annual Rate,T
� -e <. �• :xl��.� _.
Viaiinftily kifi :; ,
Lynnwood
24.00
2.00
Algona
36.00
3.00
Tukwila
52.00
4.33
Everett
60.00
5.00
Kent
60.00
5.00
Edmonds
72.00
6.00
Mountlake Terrace
72.00
6.00
Tumwater
72.00
6.00
Unincorporated King County
84.00
7.00
Des Moines
84.00
7.00
Kirkland
84.00
7.00
Mill Creek
84.00
7.00
Woodinville
84.00
7.00
Average Rate
84.84
7.07
Lakewood
96.00
8.00
Puyallup
108.00
9.00
Seattle
108.00
9.00
Covington
108.00
9.00
Tacoma
120.00
10.00
University Place
132.00
11.00
Bellevue
156.00
13.00
RECOMMENDATION
The above rate study is for information only.
RL:ad
IF:aliee \Surface Water Rate Review 2003)
Utilities Committee
November 18, 2003
Present: Pam Linder, Chair; Joan Hernandez, Richard Simpson
Jim Morrow, Brian Shelton, Pat Brodin, Gail Labanara, Ryan Larson, Mike
Cusick, Frank Iriarte, Rhonda Berry, Lucy Lauterbach; Dennis Robertson
1. 303 Facilities Fund Status Update Jim had a list of the projects funded or planned for his
facilities staff. Some are major projects that are planned for the future, such as connectivity or
getting rid of the McClees property bought for vactor waste. Others are projects that were
finished in 2003 including replacing carpets in the 6300 building, removing graffiti at Tukwila
Pond Park, painting fire stations, and replacing the community center carpets. More painting at
city buildings and roof coating the George Long building are active projects. Projects being
designed for 2004 include the Council chamber project, which needs a list of possible decisions
to help Council (and the Court and Planning Commission) choose what can be done. The
committee recognized this was a policy issue, and thought it could be discussed at the Council
retreat after it gets initial consideration at a Council meeting. There is also a long list of Future
projects that are needed but not funded. Information.
2. Upgrade Pump Station 19 Fort Dent There are two pump stations currently at Fort Dent,
and neither has been properly maintained for years. One does not work at all, and the other is
overwhelmed with water. Both pumps are old, and cannot be maintained. New pumps are
needed, and it is not known whether the current gravity system will be adequate. PACE, Inc. was
chosen from a short list of contractors. The contract will be for $41,742. Recommend PACE,
Inc for design of Fort Dent storm drainage system.
3. Consultant for Strander Pipe Replacement The storm drain pipes in Strander /Andover
East and along Christensen Road and Baker Boulevard flood regularly with any big rain events.
The pipes are too small, and need to be larger. There are many other pipes (including Olympic
gas line pipe) in the vicinity, so replacing the pipes won't be easy. PACE was chosen to design
the pipe replacement. The contract for preliminary engineering is $192,745. Dennis asked if it
was feasible to pump the excess water to Tukwila Pond, and was told it was not. Recommend
PACE to design pipe replacements in Strander.
4. Engineering for Phase 2 Allentown /Foster Point Sewers Designs for sewers as well as for
water, street and some sidewalk improvements for Allentown/Foster Point have been done for
both neighborhoods to the 90% level. The remaining 10% design remains to be done, and the
two contractors (one for each neighborhood) will finish them. Gray & Osborne will finish
Allentown's design, and AHBL will finish Foster Point's.
Pant L asked that staff look at both sides of 42nd for the sidewalk to see which side was the
better side to put a sidewalk on. A complicating factor is that the sidewalk now on the east side
of the street badly needs repair, as it is dangerous for walking. Pam said dogs jump at the fence
threatening walkers on that sidewalk. Staff said they would ask the neighborhood about which
side they would prefer to put the sidewalk on when they have meetings there. Recommend
authorizing contract addendums for design.
5. Other Engineering for Phase 2 Allentown and Foster Point The same two firms doing the
street work for Allentown and Foster Point are also designing storm drains and water lines there.
Final design is also needed here for the remaining 10% of work. Gray & Osborne and AHBL
will finish their designs for $19,727 and $3,893 respectively for the project. Pam asked if Foster
Point would get sidewalks, since one prominent citizen there has stated they did not want them.
Dennis asked about a large cottonwood in Foster Point that is threatening to the house and citizen
who lives under it. Jim said staff had checked the health of trees there, but that he would ask
again. Recommend contract addendums to Phase 2 contractors.
6. Utility Rate Comparisons Staff had prepared comparisons among many jurisdictions for
water, sewer, and surface water rates. Tukwila's water rate for 2003 is mid range; and mid range
for sewer rates as well, though there were fewer cities to compare to. We were on the low end of
surface water rates. Staff said it was hard to compare something like sewer rates, as there are
many extra charges for things that can't be compared in a survey. Pam said the Council should
review the surface water rate in 2004 to be implemented in 2005. Jim M said any changes should
be done early in the year so businesses can plan for it in their future budgets. Information.
7. Response to Mr. Robertson's remarks Dennis Robertson had made comments at the
previous night's council meeting that the City should look at alternatives for doing drainage in
the Cascade View neighborhood more cheaply by using some alleys for new pipes. Jim's
response was that the final design is still being done. He also pointed out facts such as the City's
financing the project with CDBG and PWTF loans. One of the problems with Cascade has been
that people tied their roof drains into the sewers. Putting storm drains in alleys wouldn't work
well in most places, and one try at that several years ago was unsuccessful because so many
owners were out of state corporations. Information.
Utilities Committee
October 7, 2003
Present: Pam Linder, Chair; Joan Hernandez, Dave Fenton
*Jim Morrow, Brian Shelton, Pat Brodin, Jill Mosqueda, Mike Cusick, Frank
Iriarte, Ryan Larson, Gail Labanara, Lucy Lauterbach
1. Public Works Operations Pat Brodin gave an excellent power point presentation on the
Water, Sewer, and Surface Water funds. In the Water department section he talked about the
efficiency of using automatic meter readers that can be read by someone driving by who doesn't
have to get out of his/her car. The City is converting meters a small amount at a time so there's
not a huge capital outlay all at once. Seattle tests water for coliform every two weeks at four
different sites in Tukwila. Water is also tested for 177 different compounds. The committee
members asked how full the reservoir on the North Hill is kept, and Pat said it is usually 50 %-
90% full except when it's being inspected.
In the Sewer department, there are only 2 workers in the Sewer department, so when big
problems come up people are pulled from other departments. The City has 11 pump stations, 36
miles of sewer lines, and 730 manholes. They use the jet vacuum truck to clean out lines and lift
stations. The committee saw pictures of two feet high cakes of grease in a lift station. Pat said
getting restaurants to put in grease separators is important, and the City may need to be more
strict in requiring effective systems for every restaurant and food prep business. As more
restaurants are being built, their grease puts more strain on the sewer system.
Surface Water Maintenance has been working for years to improve deficiencies and it is paying
off in ways many people may not notice, though there's less flooding and it floods in fewer areas
now than it did 10 years ago. Staff has to clean catch basins and manholes, and they remove a lot
of dirt from the lines. Last year there were 17 truckloads of dirt sucked out of the surface water
lines. There is a video TV system that works unless there's a large obstruction, and the video TV
is done of 16,290 feet of pipes. The City has 1,100 catch basins to clean out, too.
Finally Pat talked about the fiber optic network that has been slowly added throughout the City.
As various companies have come through the City, they have almost all dedicated a line or two
to the City, so we have a good number of conduits to string cable through.
Jim said Public Works will have its third year of budget cuts with the 2004 budget, and he said it
cannot withstand such cuts much longer. The street department budget is down 40% in constant
dollars. Information.
2. Pumps Purchase Lift station 12 is near the post office and Key Bank, and handles all of
Southcenter's sewage. It is being improved in three stages. First there was a bypass line put in,
and now new pumps will be bought and installed, and then putting them, a generator, and electric
wiring in will follow. The pumps are in the budget. Recommend bid purchase to Regular
Council for approval.
3.Comprehensive Surface Water Plan Jill gave a report on the updates she is working on in
the Surface Water Comp Plan. She has worked with staff from DCD, Ryan Partee, and
maintenance staff to make sure all the'angles would be considered. Several basin studies showed
overlaps in the area they covered, so she has put all the basins on GIS so that they're separate
and make sense now. There are problems associated with each basin, and these are put in as
projects to be worked on over the next several years. CH2M Hill has been helping with the Plan,
which is 80% done. Because this plan will be put into DCD's larger Comprehensive Land Use
Plan, Jill said it would be done in November. Information.
4. Flood Plan Management Plan and Policies The last Flood Management Ordinance was
passed in 1980 and updated in 1998. Jill used the State Plan as a basis to start a new City Flood
Management Plan, and made some changes. Ecology wrote a glowing recommendation of her
plan, citing it as "an excellent document ". One provision for anchoring manufactured homes will
be controversial. Flooding includes not only floods from the river, but also areas that tend to
collect water in high storm events. The Plan will need to go to SEPA once it's finished.
Information.
5. Development Guidelines and Design and Construction Standards New development
standards are included in a spiral bound notebook, and run over 100 pages of text and as many
pages of drawings. They include design guidelines and special considerations for streets, sewers,
surface water, and water, and they get to grease traps, riverbank studies, bus pullouts, catch
basins, pipes and other details needed by developers. Pam L had noticed the requirement for
street dead ends to have 600 feet for fire truck turn- arounds. The committee suggested that they
look at that standard next year. Jill said the surface water standards rely on King County
standards, with the book showing the exceptions to that code. The standards are being put on the
city's website. Information.
ommittee chair approval
INFORMATION MEMO
To: Mayor Mullet
From: Public Works Director
Date: October 1, 2003 UU 11
Subject: Comprehensive Surface Water Management Plan
ISSUE
This memo summarizes the status and content of the Comprehensive Surface Water
Management Plan update. The current Comprehensive Surface Water Management Plan
was approved by Council in 1993. Surface water regulations and practices have changed
since 1993, making it necessary to update the Comprehensive Surface Water Plan.
BACKGROUND
In October 2002, CH2M Hill began working with Public Works engineering and
operations and maintenance staff and a Department of Community Development
representative to develop a new Comprehensive Plan that includes:
• Creation of a drainage basin map in GIS with problem areas located
• Compliance to current regulations including the Growth Management
Act, the National Pollutant Discharge Permit requirements, and the
Endangered Species Act
• Use of best management practices for outdoor operation and
maintenance activities (all departments including fire, parks, golf)
• Ranking of Capital Improvement Projects based on benefits versus cost
• Consideration of "state of the art" practices, including Low Impact
Development for water quality and quantity control
ANALYSIS
The contract is approximately 80% complete. Following completion of the Plan, Public
Works will submit for SEPA and then present the Comprehensive Plan to Council. The
Comprehensive Surface Water Management Plan will form the basis for the surface water
element of the Comprehensive Land Use Plan, now being developed by the Department of
Community Development.
RECOMMENDATION
Information only.
Utilities Committee Meeting
November 19, 2002
Present: Dave Fenton, Chair; Jim Haggerton, Pam Linder
Jim Morrow, Ryan Partee, Pat Brodin, Gail Labanara, Mike Cusick, Nora
Gierloff, Lucy Lauterbach
1. Sewer Connection Charges Duwamish An ordinance establishing the sewer
hookup requirements for Duwamish are outlined in an ordinance. Homes are required
to connect to sewer ONLY if their septic system fails; they add a bathroom or bedroom;
or they sell the home. Because Val Vue is handling the loans, it is they who will put the
notice on the properties that alert people about these requirements. Pam L said so far
the project has gone very well. Recommend ordinance to Regular Meeting.
2. Utility Rate Comparisons Because AWC puts out a comparison of water and
sewer rates annually, it is easy to compare our rates with other districts and cities. In
water rates, with the most recent increase, Tukwila rates are third highest of 15 cities
and districts. District 125 had the same rates as Tukwila until our recent increase; and
now we are slightly higher. Highline's rates were just raised, and are the second
highest in the survey. In sewer rates, Tukwila has the fourth lowest rates of eleven
districts and cities shown. Sewer rate increases will be discussed in 2003.
Jim M said he and staff have learned of a program that will very inexpensively do asset
management for water and sewer. The program will tell the value of the systems, the
cost of maintenance, and will give information to use in making decisions about rates
and improvements. It will also tell how different customers use the systems. This could
help with the new GASB 34 accounting system in Finance, and could help consolidate
many systems into one. Information.
Stormwater Management Policies When the size of the stormwater detention pond at
the Hillside Homes subdivision became apparent, the Mayor asked DCD for some
policy ideas to control the appearance of future stormwater facilities. Public Works and
Planning staff met on the issue and developed a memo of possible policy options that
was presented to the Committee for discussion.
One idea, which the committee strongly recommended, was to require developers to
submit a 90% complete stormwater design with their land use applications, rather than
the schematic design that we have accepted in the past. This has led to problems when
the area set aside for drainage turned out to be insufficient, leading to deeper, steeper
"ponds ". Other policy options range from requiring that open ponds have a maximum
side slope of 3 to 1 allowing for landscaping and a more natural appearance, to
requiring that all detention be in underground tanks, to using multiple smaller ponds or
vaults.
Another approach is to reduce the amount of runoff that needs to be detained by
reducing road width, allowing "grasscrete" in low traffic areas, setting maximum (rather
than just minimum) parking standards, and infiltrating the water whenever possible.
Unfortunately Tukwila has areas of flooding, erosion, high groundwater, and unstable
slopes where infiltration is not recommended. Staff is working on mapping these areas
so that developers will know up front about these problems.
The trend in stormwater regulations, set by the new Department of Ecology (DOE)
Manual, is to require higher levels of detention and not give credit for existing
impervious surface. Tukwila follows the King County Surface Water Design Manual,
which will be updated to be "equivalent" to the DOE Manual in the next year or so. This
will have the effect of making ponds and tanks even larger and more expensive. The
committee was initially supportive of requiring detention in tanks underground, but
wanted to study the issues more before making strong recommendations. Staff will
refine the policy options and photograph some example of stormwater facilities before
bringing the issue to COW. Recommend issue to COW.
4. Water Shut Off Notices In the last couple of months, the number of shut off
notices has risen sharply. There is a problem with some customers being repeat
customers and other being newly in need of help. In looking at 14 months of bills, staff
found 37 individuals who were continual repeat offenders, and they have heard from
one person that it is cheaper not to pay for three months and then pay it all. After
discussion the committee recommended increasing penalty fees, mailing shut -of notices
instead of hanging notices on repeat offenders, and requiring a 3 month deposit from
repeat offenders. They also wanted to raise the late notice fee from $2 to $4. Finally, if
the RCW allows, they wanted to penalize people who cut the locks off the water meters
with a $100 fine if possible. Information.
5, Cascade Water Alliance Even with the most recent decisions about expanding
service to the Sammamish Plateau, Pat and Jim H thought the Cascade Water Alliance
(CWA) was still a valuable alternative to Seattle water for the future. CWA has applied
for some grants which may help. Also, Seattle is spending money outside our area, and
though CWA will spend a lot of money building pipes to the east side of Lake
Washington, we'll have more impact on CWA than on Seattle. Beginning in February, all
new connection in Tukwila will be charged the CWA rate, and the funds will go to the
CWA capital fund. Our initial costs will be higher with CWA, but in the long run, it may
be a better deal than Seattle. So the picture still looks positive for CWA. Information.
Committee chair approval
d
INFORMATION MEMO
TO: Mayor Mullet
FROM: Public Works Directo
DATE: November 13, 2002
SUBJECT: Water & Sewer Rate Review
ISSUE
Annual review of water and sewer rate charges by other public agencies.
BACKGROUND
The Public Works Department has reviewed rates charged by other agencies for single -
family residences. The information was obtained from the AWC 2002 Tax & User Fee
Survey Part IV / Water, Sewer & Stormwater Fees, published by the Association of
Washington Cities.
The following tables outline selected water and sewer rates charged by agencies listed.
Monthly rates are per 1000 CF.
WATER RATES
City', >` `
2000'
- ?'2001
2002 ....
Olympic View Water
22.95
23.85
*
Highline
29.00
29.00
*
Auburn
15.12
*
*
Alderwood
20.47
*
*
Soos Creek
23.25
*
*
Lakehaven
12.54
12.54
12.54
Kent
12.40
13.75
13.75
Mercer Island
15.60
15.60
15.94
Puyallup
16.33
16.33
16.33
Tacoma
13.95
15.42
17.05
North Bend
20.73
20.89
20.89
Redmond
17.98 •
17.98
23.25
KC Water District 125
23.00
24.50
Tukwila
24.70
24.70
24.70
Bellevue
24.20
25.55
26.82
Seattle
25.50
25.50
27.40
Renton
28.10
Woodinville Water Dist.
27.70
25.00
28.60
KC Water District 119
37.75
37.75
37.75
" Did not complete rate survey this year.
Mayor Mullet
Page 2
November 13, 2002
SEWER RATES
• Did not complete rate survey this year.
RECOMMENDATION
The above rate study is for information only.
MC:ad
(P:alice \Water & Sewer Rate Review 20021
62.
Midway Sewer District
17.00
17.00
*
Gig Harbor
27.50
27.50
*
Normandy Park (7/2/86)
17.50
*
*
Castle Rock
19.45
*
*
Auburn
26.74
Alderwood Water Dist.
26.78
*
Buckley
28.40
*
*
Soos Creek
34.30
*
*
Renton
12.29
Edmonds
21.97
22.90
22.90
Lakehaven/ Federal Way
26.48
26.48
26.48
Tukwila
24.50
24.75
28.40
Val Vue Sewer District
47.45
25.75
29.40
Kent
27.18
31.27
Tacoma
30.04
32.05
32.05
Redmond
25.80
25.80
32.20
Bonney Lake
37.40
37.40
37.40
Mercer Island
39.72
39.97
43.62
North Bend
50.63
50.72
50.72
Seattle
43.20
44.90
51.90
• Did not complete rate survey this year.
RECOMMENDATION
The above rate study is for information only.
MC:ad
(P:alice \Water & Sewer Rate Review 20021
MEMORANDUM
To: Steve Lancaster
From: 'Nora Gierloff
Date: August 22, 2002
Re: Stormwater Management Policy Options
After two meetings with Public Works we have identified some possible policy options
to reduce the impacts of stormwater detention and retention facilities. With the possible
exception of Low Impact Development techniques most of these solutions will require
more land and be more expensive than current practice.
Require Stormwater Engineering Early in the Project
Currently projects can estimate the size of their stormwater facilities and put in a
"placeholder" during the design review and subdivision preliminary approval process.
The detailed calculations for required volume are not done until the permit stage, at
which time the facilities often turn out to be larger than anticipated. Since the other
elements of the design are fixed at that point there are few aesthetic options available.
If we required the detailed engineering up front we would be in a better position to
positively influence the design. However, developers may resist spending the
additional money on engineering prior to project approval.
Limit the Side Slopes of Ponds
Adopt an amendment to the King County Surface Water Design Manual to require that
the side slopes of ponds could not be steeper than 3H to 1V. This would eliminate the
requirement to fence them, allow for landscaping and potentially allow for a more
natural appearance. The downside is that this would consume more land and limit the
ability to site ponds on slopes.
Require that Detention Vaults be Completely Underground
Adopt an amendment to the King County Surface Water Design Manual to require that
all detention vaults be completely buried below ground. Any facility with side slopes
steeper than 3H to 1V would have to become an enclosed, underground vault rather
than a pond. This would hide the facility eliminating any aesthetic concerns. The
downside of this requirement would be that it eliminates some options for the developer
and will lead to increases in construction and maintenance costs.
Encourage Multiple Smaller Ponds or Vaults
Encourage engineers to break drainage facilities into smaller parts throughout the site,
rather than putting all of the water into a single large facility. These smaller ponds or
vaults would be less visually obtrusive and may turn out to be more cost effective than
a single large vault. However unless it is a code requirement the effect of our
"encouragement" is limited.
C: \WINDOWS \TEMP \STM W ATE 1.DOC
Encourage Low Impact Development
This is a name for a philosophy of site development aimed at minimizing hydrologic
impacts. The issue of stormwater management is addressed from both ends. First by
reducing impervious surface and therefore runoff volume. Second by retaining and
infiltrating as much stormwater as possible as close to the point of generation as
possible. These work together to avoid large, centralized stormwater facilities.
Techniques for reducing impervious surfaces include:
❑ Reduce our roadway width standards. This type of change would need to be
negotiated with PW and Fire and would require a strong policy directive from
the Mayor's office. Those departments have not been enthusiastic about
"Neotraditional" development standards in the past.
❑ Allow or require use of pervious pavement for low traffic areas such as fire
lanes, shoulders and overflow parking areas. Pervious pavement such as
"grasscrete" does require more maintenance than asphalt, which has been a
safety concern for Fire and a workload issue for PW street crews.
❑ Introduce maximum as well as minimum parking standards. While other cities,
such as Bellevue, have adopted this type of limitation it is generally not popular
with businesses. In Tukwila's case we have no public and little on street
parking in our commercial areas available to absorb overflow vehicles.
❑ Change our Planned Residential Development regulations to promote cluster
development patterns that would limit roadway lengths and create natural areas
for infiltration. This would mean allowing smaller lots and larger common
space tracts than our current regulations.
,❑ Create maximum impervious surface standards for residential and commercial
sites. This would have the effect of limiting the intensity of development and
might make it difficult to meet our growth targets.
Techniques for retaining stormwater include:
❑ Bioretention, where small landscaped depressions are used to hold and
ultimately infiltrate roof or road runoff. This has the advantage of being low
tech and low maintenance, however homeowners would need to understand that
they could not regrade or replant these areas.
❑ Preservation of existing topsoil, adding soil amendments and preventing soil
compaction during construction all help preserve the existing permeability of the
soil. This would complement the impervious surface regulations by maximizing
the permeability of the vegetated areas.
❑ Greater use of swales instead of pipes for conveying stormwater. Swales allow
a greater degree of infiltration and evaporation to occur.
Tukwila's Constraints
The LID techniques work best on relatively flat, permeable soils in previously
undeveloped areas. Much of our development is taking place on small infill sites, often
with significant slopes where infiltration is ruled out by geotechnical considerations.
C: \WINDOWS \TEMP \STMWATE 1.DOC
Flat areas like the urban center and Allentown have permeable soils, where LID
techniques could be used, but development of these areas already has little to no
detrimental downstream affect since stormwater runoff discharges to the river and not
into the creeks.
Summary
In order to reduce the need for a large detention pond, either above or below ground,
the developer needs to decrease the amount of impervious surface. This would require
policy decisions and directions from the City.
C:\WINDOWS\TEMP\STMWATEI.DOC
Utilities Committee
September 18, 2001
Present: Richard Simpson, Joe Duffle
Jim Morrow, Mike Cusick, Ryan Larson, Brian Shelton, Pat Brodin, Gail
Labanara, Lucy Lauterbach
1. Utility Rates for WaterrSewer, and Surface Water Each year Public Works
compares the rates for water, sewer, and surface water which AWC surveys. In water
rates from 2000, Tukwila was fifth highest of eighteen cities and districts. In sewers
Tukwila has the fourth lowest rates of eighteen. In surface water rates, also, Tukwila's
rates are relatively low, being the fourth lowest of twenty -four cities. Jim said that
because of conservation water revenues have dropped -this year, but they will still have a
small positive balance. Information only.
2. Case Against PS &E's Proposed Rate Change PS &E has proposed raising
residential rates 17% to make up for a shortfall they expect this year. We filed a
complaint to the Washington Utilities and Transportation Commission protesting the
increase. Also in the petition are now Auburn, Bellevue, Des Moines, Federal Way,
Lakewood, Redmond, Renton, Sea Tac, and the State Attorney General. When PS &E
joined their gas and electricity, they had promised a moratorium on rate hikes for the
first five years, which have not expired yet. PS &E bought electricity on the spot market
intending to sell it to California for a profit, but FERC put a cap on profits, which left
PS &E with extra power they couldn't sell for as much as they bought it for. The issue is
now whether they can raise rates to cover that and to cover what they see as future
increased costs. WUTC is now reviewing the case. Information.
r(J Committee chair approval
INFORMATION MEMO
To: Mayor Mullet
From: Public Works Directo)
Date: September 13, 2001
Subject: Surface Water Rate Review
ISSUE
Annual review of surface water rates for Tukwila and other jurisdictions.
BACKGROUND
The Public Works Department has reviewed surface water rates charged by other
jurisdictions for single - family residences. The following information was obtained from the
AWC 2001 Tax & User Fee Survey Part IV / Water, Sewer, & Stormwater Fees, published
by the Association of Washington Cities. Some of the figures are based on previous
research done by Public Works where information was not available from AWC.
The following table outlines selected surface water rates for single - family residences.
: :Naiiie
Annual iRate; ...
' Monthly Rate:
Tacoma
164.28
13.69
Redmond
138.00
11.50
Mercer Island
133.20
11.10
Bellevue
129.72
10.81
Issaquah
131.40
10.95
Seattle
99.00
8.25
Average Rate
85.18
7.09
King County
85.08
7.09
Shoreline
85.08
7.09
Newcastle
85.08
7.09
Woodinville
85.08
. 7.09
Burien
85.08
7.09
Lake Forest Park
85.08
7.09
Des Moines
77.04
6.42
Kirkland
72.00
6.00
Auburn
66.00
5.50
Mukilteo
64.80
5.40
Renton
62.76
5.23
SeaTac
60.00
5.00
Kent
30.8.4 to 87.96
(59.40)
2.57 to 7.33
(4.95)
Tukwila
52.00
4.33
Bainbridge Island
48.00
.
4.00
Bonney Lake
46.80
3.90
Edmonds
44.40
3.70
RECOMMENDATION
The above rate study is for information only.
RL:ad
IP:alice \Surface Water Rate Review)
Utilities Committee
October 3, 2000
Present: Jim Haggerton, Chair; Pam Carter, Richard Simpson
Pat Brodin, Brian Shelton, Ryan Larson, Mike Cusick, Lucy Lauterbach
1. Utility Rate Comparison Staff had put together rate comparisons for various jurisdictions in
the Puget Sound area. Tukwila was in the bottom one -third of those compared for water rates,
and the top one -third in comparisons of sewer rates. In a larger list, Tukwila was in the bottom
one - quarter of the jurisdictions compared for surface water rates. The committee thought the
comparisons were very interesting, and thought the whole Council might like to see them. Jim
thought a synopsis of the charts that included neighboring jurisdictions might be good to include
in the Hazelnut. Information.
2. Purveyor Rate Increase Pat has been going to purveyor meetings, and the purveyors were
told in September there wouldn't be a water rate increase in 2001. Seattle is now changing their
tune, saying there may be an increase in 2001. This is apparently because the mayor included it
in his draft budget. However, Seattle must notify jurisdictions of increases six months ahead, so
it couldn't be implemented until May at the earliest. Pat noted the reasoning Seattle gave for the
increase was somewhat light. Jim asked what the cities could do. Pat said the purveyors will say
what they think, but in the end Seattle can do what it will. If they increase rates, we'll have to
pass the increase on. Because the provision to do so is in our franchise, Tukwila will pay the
same rate as Seattle ratepayers in contrast to other suburban cities getting Seattle water.
Information.
3. Seattle City Light One thing Seattle is planning is to charge the large electricity users a
different and higher electricity rate. They currently spread the cost of new substations to all their
customers, but will charge more to the higher users. Rates for all customers are going up
effective Christmas Eve this year. Pam noted it's harder for Tukwila than other cities to conserve
a certain percentage of power, since residential is such a small part of our system. Information.
4. Review of CIP Projects The committee carefully reviewed the water, sewer, and surface
water projects planned for the next six years. They recommended some edits in the language,
and noted all the changes that have been made from past CIPs. By learning about each project,
they made great strides in approving the 2001 capital budget Eleven water projects will be done
in 2001, three sewer projects, and seven surface water projects. However, the committee
reviewed all the projects on the list for the next six years, in order to be thorough. CIP Review
Completed.
17 -1J Committee chair approval
INFORMATION MEMO
To: Mayor Mullet
From: Public Works Director
Date: September 28, 2000
Subject: Surface Water Rate Review
ISSUE
Annual review of surface water rates for Tukwila and other jurisdictions.
BACKGROUND
The Public Works Department has reviewed surface water rates charged by other jurisdictions for
single family residences. The following information was obtained from the AWC 2000 Tax & User
Fee Survey Part IV / Water, Sewer, & Stormwater Fees, published by the Association of Washington
Cities. Some of the figures are based on previous research done by Public Works where information
was not available from AWC. The table below outlines selected surface water rates for single family
residences:
iame ., ommuhityx` ;°
J A ui Rate , h,;
x 1VlorittiIy
Tacoma
$164.28
$13.69
Redmond
$138.00
$11.50
Mercer Island
$124.20
$10.35
Bellevue
$110.28
$9.19
King County
$85.08
$7.09
Shoreline
$85.08
$7.09
Newcastle
$85.08
$7M9
Woodinville
$85.08
$7.09
Burien
$85.08
$7.09
Lake Forest Park
$85.08
$7.09
Issaquah
$84.00
$7.00
Des Moines
$77.04
$6.42
Average Rate
$77.02
$6.42
Seattle
$72.72
$6.06
Olympia
$72.00
$6.00
Bothell
$66.72
$5.56
Auburn
$66.00
$5.50
Mukilteo
$64.80
$5.40
Renton
$62.76
$5.23
Mountlake Terrace
$60.00
$5.00
Kirkland
$60.00
$5.00
SeaTac
$60.00
$5.00
Tukwila
$52.00
$4.33
Bonney Lake
$46.80
$3.90
Edmonds
$44.40
$3.70
Bainbridge Island
$36.84.
$3.07
Kent
$29.28
$2.44
RECOMMENDATION
The above rate study is for information only.
RL:ad
(P:alice \Surface Water Rate Review)
Ciiy of Tukwila
ATTACHMENT W.A.
John W Rants, Mayor
Department of Public Works James E Morrow, P.E., Director
November 16, 1999 •
Ms. Virginia Tighe
3519 South 128th Street
Tukwila, WA 98168
Dear Ms. Tighe:
Thank you for attending our Surface Water Workshop at the Tukwila Community Center. We
appreciated hearing from our customers about their drainage concerns so that we can make
needed improvements to the City's storm system when required.
We have investigated your drainage concern of water flowing onto your property from above.
This situation was previously brought to our attention and changes to the City's storm water
system were made to prevent runoff from South 130th Street from flowing onto private
property located above and behind your property. All of the surface water that is currently
flowing onto your property is the result of surface flows from the private property located
between South 130th Street and your parcel.
Historically, this is the direction the surface water has flowed due to the topography of the
area. Improvements to the storm drains on South 130th Street actually reduced the total area
draining to your property. We previously investigated the possibility of installing a drainage
system behind your home to collect this surface flow and direct it into the City's storm system.
However, since this work would take place within private property and the problem was not
the result of runoff from City-owned land, it was determined that the City's resources should
not be used to solve this problem.
I realize this will not correct your surface water problem, but I hope you can understand why
the City cannot solve surface water problems within private property. If you would like to
meet to discuss this further or if you have any questions, please call Ryan Larson at (206)
433 -0179.
Sincerely,
d'n
C�LvC.17
Jim Morrow, P.E.
Public Works Director
RDL:ad
(P:il'KC1YUtim+ new)
6300 Southcenter Boulevard. Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax (206) 431 -3665
2
Cizy of Tukwila
John W Rants, Mayor
Department of Public Works James R Morrow, P.E., Director
November 9, 1999
Mr. Dwight L. McLean
13015 38th Ave: South
Tukwila, WA 98168
Dear Mr. McLean:
Thank you for attending our Surface Water Workshop at the Foster High Commons. We
appreciated hearing from our customers about their drainage concerns so that we can make
needed improvements to the City's storm system when required.
We have considered your offer of purchasing culvert for City crews to install along your
property frontage to enclose the existing ditch. Unfortunately, the City does not have the
resources to provide this service on a city-wide basis and therefore cannot offer it to you as an
individual.
I realize this is not the response you had sought, and I hope you can understand why the City
does not want to perform a service we cannot provide for all of our residents. If you would like
to meet to discuss this further or if you have any questions, please call me at (206) 433 -0179.
Sincerely,
Jim Morrow, P.E.
Public Works Director
RDL:ad
(P:diceDwigb L McLean)
6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax: (206) 431 -3665
Cizy of Tukwila
John W. Rants, Mayor
Department of Public Works James R Morrow, P.E., Director
November 9, 1999
Mr. Wayne Flesch
4225 South 150th Street
Tukwila, WA 98188
Dear Mr. Flesch:
Thank you for attending our Surface Water Workshop at the Foster High Commons and for
meeting with my staff at your home. We appreciated hearing from our customers about their
drainage concerns and answering questions about our storm system.
We have investigated the question you posed concerning the drainage pipe discharging to your
property. The concrete pipe appears to be part of an old City storm drain that was abandoned
during the reconstruction of 42"d Ave. South. Even though the system no longer receives
surface water from 42nd Ave. South and South 1515` Street, it is possible that the pipe is
receiving ground water through the joints in the pipe and the houses across from South 15151
Street may be tied into it. I have enclosed two plan sheets that show the drainage work that
took place and the layout of the abandoned pipe.
If you would like us to investigate this pipe further, please document when this pipe is
discharging, estimate the volume of discharge and then contact us for further review. The
information you gather will help to determine what is contributing to the flow.
We hope this information answers your question. If you need further information or have any
questions, please do not hesitate to call Ryan Larson of my staff at (206) 433 -0179.
Sincerely,
8sulnile(31
Jim Morrow, P.E.
Public Works Director
RDL:ad
enclosures: plan sheets
(P:alire\Wa,rc R ch)
6300 Southcenter Boulevard. Suite #100 • Tukwila. Washington 9R1R8 • Phone- 1206) 4.3.3 -0179 • Fax: /206) 431 -366.S
Cizy of Tukwila
John W Rants, Mayor
Department of Public Works James R Morrow, P.E., Director
November 8, 1999
Mr. Wesley Oxenrider
13544 35th Ave. South
Tukwila, WA 98168 -3931
Dear Mr. Oxenrider:
Thank you for attending our Surface Water Workshop at the Foster High Commons. We
appreciated hearing from our customers about their drainage concerns and answering questions
about our storm system.
We have researched your question concerning Project #8 on the City's 1997 -1998 Small
Drainage List. This project was dropped as a Small Drainage Project because the City was not
able to obtain the needed easements to construct on private land. During the planning phase of
this project, all property owners said they were willing to sign an easement to allow for the
construction and maintenance of the alley; however, when it came time to sign the easement,
six of the residents had changed their mind.
The City is still interested in correcting this problem but cannot proceed without these
easements. We encourage you or other interested homeowners to investigate whether all of the
necessary easements can be obtained at this time. I have enclosed a map with the lots
highlighted to show which parcels did not sign the easement and a listing of property owners,
with those that did not sign highlighted. This information is from 1997 and some of it may be
out dated.
We hope this information answers your question. If you would like to meet to discuss this
further or if you have any questions, please call Ryan Larson of my staff at (206) 433 -0179.
Sincerely, "Tletitt:&N,..
art. Jim Morrow, P.E.
Public Works Director
RDL:ad
enclosures
(P:1k .Wesley Oacnridcr)
6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax: (206) 431 -3665
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Mr. & Mrs. Ronald Hall
3712 South 284th Place
Auburn, WA 98001
1.352i1 SSA i4ve S
Mr. Michael A. Van Horn
13537 37th Ave. South
Tukwila, WA 98168
Mr. Jeffrey W. Baskett
3506 South 137th Street
Tukwila, WA 98168 -3966
/9
Ms. Susan Clark
13513 37th Ave. South
Tukwila, WA 98168
Mr. Sam Furutani
6810 119th Ave. NE
Kirkland, WA 98033
3572 S 1374 St
27
Mr. Terry James Satkowski
13509 37th Ave. South
Tukwila, WA. 98168
Ms. Julia E. Beckwith
• 11447 SE 180th Place
Renton, WA 98055
Mr. James E. Donaldson
13510 35th Ave. South
Tukwila, WA 98168 -3931
Mr. & Mrs. Peter Owsley
13528 35th Ave. South
Tukwila, WA 98168 -3931
Mr. Wesley J. Oxenrider
13544 35th Ave. South
Tukwila, WA 98168 -3931
Mr. & Mrs. Gary Knisley
13527 37th Ave. South
Tukwila, WA 98168
6
Ms. Vikki L. Murphy
13514 35th Ave. South
Tukwila, WA 98168
Mr. John D. Dunham
13534 35th Ave. South
Tukwila; WA 98168 -3931
Mr. Brandon Mondor
13543 37th Ave. South
Tukwila, WA 98168 -3932
Mr. G. B. Douglas, Jr.
13523 37th Ave. South
Tukwila, WA 98168
Mr. John W. Everett
13504 35th Ave. South
Tukwila, WA 98168 -3931
Mr. Charles E. Butcher
12009 Hoffman Street #202
Studio City, CA 91604
Ms. June Brandner
13538 35th Ave. South
Tukwila, WA 98168 -3931
Mr. James Donaldson
13510 35th Ave. South
Tukwila, WA 98168 -3931
Mr. Patrick Sheldon
13517 37th Ave. South
Tukwila, WA 98168 -3932
Cizy of Tukwila
John W Rants, Mayor
Department of Public Works James E Morrow, P.E., Director
November 8, 1999
Mr. Bob Euler
15220 40th Ave. South
Tukwila, WA 98188
Dear Mr. Euler:
Thank you for attending our Surface Water Workshop at the Foster High Commons. We
appreciated hearing from our customers about their drainage concerns so that we can make
needed improvements to the City's storm system when required.
I have been notified that you have, spoken with John Howat, the City's Superintendent of
Sewer and Surface Water, and that his crew will be installing a berm in front of your home, a
curb inlet and a cross culvert. The intent of these improvements is to keep the storm runoff
from 40" Ave. South from entering your property and to direct it to the ditch across the street.
We hope that these improvements will solve your drainage problem. If problems persist after
these improvements have been completed, please let us know so we can determine what further
action is required. If you have any questions regarding this issue, please call Ryan Larson of
my staff at (206) 433 -0179.
Sincerely,
Lm1
Jim Morrow, `P. E.
Public Works Director
RDL:ad
(P:alim \BoO Eukr)
7
6300 SouthcenterBoulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax (206) 431 -3665
Cizy of Tukwila
John W Rants, Mayor
Department of Public Works James R Morrow, P.E., Director
November 8, 1999
Ms. Leota More
13204 40th Ave. South
Tukwila, WA 98168
Dear Ms. More:
Thank you for attending our Surface Water Workshop at the Tukwila Community Center. We
appreciated hearing from our customers about their drainage concerns so that we can make
needed improvements to the City's storm system when required.
We have reviewed the comments you provided us regarding water standing in the yard of your
triplex and performed a field visit. We recommend the following actions be taken:
1. To prevent surface water runoff from 40th Ave. South onto your property, our maintenance
crew installed a berm across your driveway on November 4. This berm is intended to
isolate your property so that only surface water generated within your property will
contribute to the standing water problem on your yard.
2. To prevent water from standing in your yard, we suggest that you have the yard re- graded.
This will prevent any runoff from your driveway from collecting and will allow it to
continue flowing down hill.
We hope the installation of the berm and our suggested on -site improvements will solve your
drainage problem. If you would like to meet to discuss this further or if you have any
questions, please call Ryan Larson of my staff at (206) 433 -0179.
Sincerely,
tscs1 rt�
Jim Morrow, P.E.
Public Works Director
8
RDL:ad
(P:iliceacou More)
6300 Southcenter Boulevard, Suite # 100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax: (206) 431 -3665
city of Tukwlla
John W. Rants, Mayor
Department of Public Works James E Morrow, P.E., Director
November 5, 1999
Ms. Dolores C. Oswald
14056 35th Ave. South
Tukwila, WA 98188
Dear Ms. Oswald:
Thank you for attending the Public Hearing and our Surface Water Workshop at the
Community Center. We appreciated hearing from our customers about their concerns.
I have enclosed a summary report that shows the revenue received in each year from 1990
through this year. Also shown are the expenditures, including capital projects. I have also
included a breakdown of the Major Capital Projects that have been completed during this time.
I hope this information is helpful. Should you have any questions, please call Ryan Larson of
my staff or me at (206) 433 -0179.
Sincerely,
ancl—Tflvat.
Jim Morrow, P.E.
Public Works Director
JM:ad
enclosures
own)
6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax (206) 431 -3665
/O
City of Tukwila
Department of Public Works
November 5, 1999
Mr. and Mrs. John Pool
16018 42nd Ave. South
Tukwila, WA 98188
Dear Mr. and Mrs. Pool:
John W Rants, Mayor
James E Morrow, P.E., Director
Thank you for attending the Public Hearing and our Surface Water Workshop at the
Community Center. We appreciated hearing from our customers about their concerns.
I have enclosed a summary report that shows the revenue received in each year from 1990
through this year. Also shown are the expenditures, including capital projects. I have also
included a breakdown of the Major Capital Projects that have been completed during this time.
I hope this information is helpful. Should you have any questions, please call Ryan Larson of
my staff or me at (206) 433 -0179.
Sincerely,
-13kCI
Jim Morrow, P.E.
Public Works Director
JM:ad
enclosures
(do3m
6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax: (206) 431 -3665
CITY OF TUKWILA
SURFACE WATER UTILITY
HISTORY 1990 -1999
in 000's
YEAR 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
REVENUES:
Beginning Working Capital 1,200 * 1,539. 1,089 760 952 1,880 2,149 1,453 1,235 1,325
Regular Annual Charges 924 979 957 972 1,001 1,004 1,016 1,125 1,128 1,272
Investment Interest 83 98 59 35 83 • 131 76 99 86 78
Miscellaneous /Grants /FEMA 81 21 4 2 13 51 56 131 94 2
Public Works Trust Fund Loans 105 35 196 0 730 0 0 0 0 0
Total Revenues
2,393 2,672 2,305 1,769 2,779 3,066 3,297 2,808 2,543 2,677
EXPENDITURES:
Operations & Maintenance:
Salaries & Benefits 146 228 268 294 271 300 323 356 425 435
Supplies 21 28 20 26 16 18 17 20 22 25
Other Services 53 35 46 82 24 63 108 69 69 100
Billing & Other Admin. Costs 143 99 110 115 138 169 176 178 184 187
Taxes 14 15 15 17 21 21 19 20 18 22
Debt Payments 1 7 16 26 71 72 72 71 70 68
Sub -total 0 & M
Capital:
378 412 475 560 541 643 715 714 788 837
Small Drainage Projects 111 13 32 0 208 89 339 411 277 300
Preliminary Engineering /Studies 40 68 44 38 55 64 56 93 10 90
Other Capital Projects 45 18 85 94 95 21 18 20 5 25
* *Major Capital Projects 280 1,072 909 125 0 100 716 335 1,38 0
Sub -total Capital 476 1,171 1,070 257 358 274 1,129 859 430 415
TOTAL EXPENDITURES 854 1,583 1,545 817 899 917 1,844 1,573 1,218 1,252
ENDING WORKING CAPITAL 1,539 1,089 760 952 1,880 2,149 1,453 1,235 1,325 1,425
*General Fund Contribution to Surface Water
* *See Attachment A
CITY OF TUKWILA
SURFACE WATER HISTORY
ATTACHMENT A
in 000's
; ; ; "0 . !.� a� } :1 9 ' ' . 1992 1993 19 4:;:'� =.: ;1995 ;1996: T: 1997, ��t; ��r1998` t,f
,.. . - ... , 990 ..1 91 ° 9
Trail & River Bank Repairs
CBD Dike Repair
Green River Dike Improvements
Christensen Road
Fostoria Drainage /So 133rd
Nelson Place /Longacres
41st Ave S. Peninsula Drainage
51st PI S. Storm Drain Pipe
Martin Luther King Way
S. 104th Riverbank Slough Fix
Southgate Creek
Vactor Waste Site
Martin Luther King Storm Drainage
Nelsen Place /Longacres Way
W.Valley Hwy Extension
c:alan's docslsrcwlrhlsl -a
96
184
353 15
148 13
537 786
34 20
54 25
21 40
15
45
74 82
69 28 69
31 8
580 24 8
100
168
48
Amount Maintained I
Surface Water Facilities in Tukwila
'Type of Facility
Outfalls
Major undercrossings
Ditches
Catch Basin /Manholes
Pump Stations
Retention Ponds
Detention Tanks/Wet Vaults
Asphalt Swales
Pipe (6 -inch to 108 -inch)
On -site City storm systems (lots)
75
40
25 miles
3000
2
1
12
2000 feet
46 miles
8
'Yearly Maintenance Activities Amount Completed 1
Videotape the mains
Jet the mains
Clean catch basins /manholes
Oil Spills /DOE calls
Ditches cleaned
Customer calls received
Dump quantities
*Dump fees paid by end of 1999
*Note: Fees are $30 per truck but could go to $700 per truck
25,000 feet
25,000 feet
1200
2 calls
5000 feet
30 -40 calls
2300 yards
$7,000
/3
Utilities Committee
November 22, 1999
Present: Pam Carter, Chair; Steve Mullet, Jim Haggerton
Jim Morrow, Alan Doerschel, Ted Freemire, Brian Shelton, Pat Brodin,
Lucy Lauterbach; Richard Simpson
1. Surface Water Response Letters because of comments received at the Public Hearing on
the surface water rate increase, Public Works investigated several people's problems and wrote
them letters. Maintenance staff solved some people's problems, and others were told they could
not be helped because a solution would involve spending public money on private property.
Also, though people prefer ditches to be piped, ditches do provide some cleaning, which is
encouraged for ESA.
The committee talked about a rate increase. Because surface water has traditionally been under-
funded, capital needs have now driven the need for a rate increase. Both large and small drainage
projects are needed to control surface water in the City. Alan said the City isn't likely to raise
rates in the next few years, so this rate increase will need to last six years. The committee
recognized that it will last that long unless there are unplanned emergencies that require big
fixes. Jim M agreed the City should not raise rates incrementally to deal with problems. Steve
said we'd just have to cut back the projects we've planned if the money runs out. He added that
Tukwila charges are not onerous, and that we only charge for what is needed for projects. A $15
increase per year in surface water for residences should not be a budget problem.
Pam asked about the street by Tukwila School, and said she'd like a letter to the person who'd
complained about their drainage. Once the small drainage list is done, we'll let them know where
that project is. Jim H raised the issue of the Utilities Commission. He had talked to several
people who are interested in this. Pam suggested putting a blurb in the Hazelnut saying we're
looking for people. The issues the Commission will consider include water, sewer, ESA,
undergrounding, surface water, taking over other districts or parts of districts, and water
alternative sources. Both residents and businesses should represent all areas of the city. A W.D.
#125 commissioner who lives in Tukwila could be good, also.
On rates, Jim said he didn't really like a 40% increase, but he would support it since we can't
raise rates after this, and the money is all used locally. Finally, Alan raised the point that until the
CIP was cut drastically, the rate increase needed to support it was an 80% increase. Staff worked
hard to cut it down. Support surface water program and rate increase.
2. Budget The committee went over the utility budgets, and approved them all. They wanted
to learn of Cascade Water Alliance's chances, and their effect on the budget. Budget approval
3. Other Jim H asked if it was possible to take over a part of the Highline Water District. It's
unknown whether the Commissioner's there would consider that. Ted said it would be difficult
for the City to serve the area Jim was thinking of. Jim M said future issues for Utilities are
undergrounding; in surface water how much can be done on private property; cross connections;
and grease disposal. Information.
l j' . Committee chair approval
INFORMATION MEMO
To: Mayor Rants
From: Public Works Director
Date: October 5, 1999
Subject: Surface Water Rate Increase
ISSUE
Continue to review and discuss the potential impacts of a surface water rate increase.
BACKGROUND
Surface water rates for the City of Tukwila were first established in 1989. Rates were again
reviewed in 1996 resulting in Ordinance No. 1779 which passed on 11/18/96 and increased
surface water rates 10% in 1997, and 12% in 1999. Those increases covered increases in
operations, maintenance, and some utility improvements through 1999. An additional surface
water rate increase is needed in order to implement the proposed Six -Year Capital
Improvement Program.
ANALYSIS
Attached is the Surface Water Rate Summary Sheet, Capital Improvement Program (CIP)
Project Summary, Small Drainage Projects list, and Surface Water Expenditures pie chart.
The Rate Summary reflects the impact on the utility's ending fund balance with a 40% increase
in January of 2000. The figures have been verified with Finance to reflect both existing and
anticipated debt service, and expected increases in 0 & M. The CIP has been analyzed and
patterned into a priority that reflects those projects that can be done in the most realistic time
frame while still keeping highly needed infrastructure improvements as early in the schedule as
possible. Please note that the Small Drainage Improvements have been increased to $600K for
year 2000 to best solve as many of the residential drainage deficiencies as possible. What
remains is a practical and justifiable Surface Water Six-Year Plan.
RECOMMENDATION
For discussion only.
PB:ad
(P: alice \InfoUC 101199)
City of Tukwila
CAPITAL FINANCIAL PLAN
for
2000 -2005
SURFACE WATER
Surface Water Rate Summary Sheet
Figures shown are in thousands ($ 000s)
2000 2001 2002 2003 2004 2005
* ** *REVENUES * **
Revenue from Billing 1270 1282 1295 1308 1321 1348
Grants/ Mitigations expected or proposed 257 412 740 375 593 0
Proceeds from Loans (PWTF) 350 1190
Other Revenues 80 80 80 80 80 80
TOTAL REVENUES [Current Rates] $1,607 $2,124 $2,115 $1,763 $3,184 $1,428
Beginning Working Capital
1,187 622 424 (563) (1,289) (1,556)
TOTAL AVAILABLE FUNDS $2,794 $2,746 $2,539 $1,200 $1,895 ($128)
* ** *EXPENSES * **
Operations and Maintenance (4% incr.) 779 810 842 876 911 947
Debt Service 68 89 89 89 160 160
Engineering Labor (4% incr.) 133 138 144 149 155 161
SUBTOTAL O & M 980 1037 1075 1114 1227 1269
Capital Improvements Program (CIP) 1,192 1,285 2,027 1,375 2,225 1,647
TOTAL EXPENSES $2,172 $2,322 $3,102 $2,489 $3,452 $2,916
EST. ENDING BALANCE [Current Rates] $622 $424 ($563) ($1,289) ($1,556) ($3,044)
IMPACT OF 40% RATE INCREASE
494 513 518 523 528 539
Cumulative Impact to Ending Fund Balance 494 1007 1525 2048 2576 3116
ENDING BALANCE w/Year 2000 40% INCREASE $1,116 $1,431 $962 $759 $1,020 $71
L J
P: \CIP \Cip412
printed 10/5/99
* Denotes other funding sources, grants, mitigations, etc.
City of Tukwila
CAPITAL FINANCIAL PLAN
for
2000 -2005
SURFACE WATER
• OTHER
PROJECT TITLE (Fund 412) 2000 2001 2002 2003 2004 2005 TOTAL SOURCES
Annual Neighborhood Drainage Program 600 400 400 400 400 400 2600 0
Pac Hwy S High Flow Bypass Drainage Impr'vmnts 85 250 250 0 850 850 2285 0
Nelsen PI /Longacres - Phase II 157 0 0 0 0 0 157 157
Duwamish Basin Study 180 0 0 0 0 0 180 100
City Wide Water Quality Management Plan 60 75 1 1 1 1 139 0
Duwamish Riverbank Stabilization I 100 550 986 0 0 0 1636 1152
Duwamish Riverbank Stabilization II 0 0 40 500 375 0 915 750
NPDES Program 10 10 10 10 10 10 60 0
Surface Water Utility Plan (SWUP) 0 0 110 0 0 0 110 0
South CBD Levee Repair 0 0 84 0 0 0 84 0
Gilliam Creek Regional Detention 0 0 146 364 0 0 510 0
Fostoria Drainage (II, III) 0 0 0 100 250 0 350 0
Southgate Creek Channel Improvements 0 0 0 0 0 0 0 535
South 133 Street Water Course Rehabilitation 0 0 0 0 290 0 290 218
Strander Blvd. Pipe Replacement 0 0 0 0 0 40 40 0
Andover Park West 48 -inch Drain Rehab 0 0 0 0 0 80 80 0
S 143 Street Drain 0 0 0 0 24 31 55 0
Gilliam Creek 42 Ave S Culvert 0 0 0 0 25 100 125 0
Christensen Road 4 CFS Pump 0 0 0 0 0 80 80 0
S 134 Street/48 Avenue South Sediment Trap 0 0 0 0 0 55 55 0
Gilliam Creek (Above 42 Ave S) 0 0 0 0 0 0 0 0
Gilliam Creek North Fork 0 0 0 0 0 0 0 0
Gilliam Creek 250 cfs Storm Drain Pump Station 0 0 0 0 0 0 0 0
Riverton Basin Regional Detention 0 0 0 0 0 0 0 0
Southgate Basin Regional Detention 0 0 0 0 0 0 0 0
Tukwila Remaining Basin Regional Detention 0 0 0 0 0 0 0 0
DrainageNactor Waste Facility 0 0 0 0 0 0 0 500
Grand Total 1192 1285 2027 1375 2225 1647 9751 3412
P: \CIP \Cip412
printed 10/4/99
Staff Recommendation Only - Not Approved by City Administration or Council - Subject to Change
2000 - 2001 SMALL DRAINAGE PROJECTS
10-6-99
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1
Steep slope channel which outfalls drainage from
S 156th/ 158th St between 44th Ave S/ 47th Ave S poses
severe erosion threat if additional flow for neighborhood
drainage improvements (project 2) is completed.
Install Type 2 catch basin and 150 1.f. butt-fused slope
drain and dissipater to provide safe conveyance from
existing culvert outlet at S 156th St and 47th Ave S to
bottom of slope. Requires 15' wide by 150 I.f.
(approx.) of easement on private property. (Redesign
using alternate route #4.)
Construction $65,000
Engineering 12,000
Easement 5.000
Total $82,000
2
Lack of formal drainage system and ponding of water on
S 156th/ 158th St between 44th Ave S/ 47th Ave S
causes local flooding of street and adjacent properties.
On 47th Ave S add 2, Type 1 catch basins and 120 1.f.
of 12" pipe to connect to new slope drain at the corner
of S 156th St and 47th Ave S (project 1).
Extend existing 12" diameter drain on south side S
156th St for about 300 1.f. and add 3 catch basins to
reduce local ponding. Connect to new slope drain at
the corner of S 156th St and 47th Ave S (project 1).
Construction $ 95,000
Engineering 18,500
Total $113,500
3
24" outfall at 48th Ave S to Duwamish falling apart and
needs to be shored up. (ESA issue)
Re-establish 24" outfall pipe. Rebuild riverbank.
(HPA, ESA, Shoreline, etc.)
Construction $25,000
Engineering 6.000
Total $31,000
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4
Over several years, residents' complaints of flooding
driveways and back yards due to broken drains/lack of
drainage in private alley between 58th and 59th Ave S,
from Tukwila Elementary School playground (S 149th St)
to S 147th St. Sixteen single-family properties drain to
this alley, currently used for both drainage and access.
Rebuild existing drain system in alley: provide 670
1.f. of 12" drain in alley plus auxiliary line to pick
drainage from east side properties. Finally, paving
of alley is included in estimate to collect runoff.
(Alley R/W dedicated at time of original
development would be condition of easement to
proceed with public drain (access) project.) Recent
petition by property owners — staff is checking on
status of easement.
Construction $140,000
Engineering 35,000
Total $175,000
.
5
On 38th Ave S/S 137th St in Cascade area, springs behind
curb and under sidewalk are undermining road and
causing problems with smell, ice, water in basements, etc.
Also catch basins and pipe on 37th Ave S.
Provide 200 l.f. 12" pipe and 100 1.f. underdrains and
3 catch basins and pipe to catch curb water coming
around corner and reduce groundwater surcharging
through pavement.
Construction $50,000
Engineering 10,000
Total $60,000
6
13333 34th Ave S. Due to cars parking in ditch and
plugging ditch and pipes with debris causing the roadway
surface water to overflow onto neighboring properties.
First three properties north of S 135th St on west side
experience high water table, and ice on street where kids
walk during winter.
Need to pipe east side ditch in 34th Ave S with •
approximately 200 feet of 18" pipe and 2 Type II
manholes, and build gravel shoulder. Also, provide
approx. 200 feet of french drain (incl. 4 yd. drains)
on west side of street from S 135th St to north and
connect to west side drain.
Construction $65,000
Engineering 10,000
Total $75,000
7
At 56th Ave S & S 147th St, washing of hillside on S
147th St right-of-way due to 12" storm pipe sticking out
of hillside. This pipe is the drainage from S 147th St &
56th Ave S. We also have an 8" sewer main in this right-
of-way that could and will be exposed. This washing has
caused 6-foot deep groves at the bottom of hill over our
8" sewer main. The main is 8 feet deep.
Provide approximately 300 ft. of 12" HDPE to
bottom of hill, with proper splash pad. Also need 1,
Type II manhole.
Construction $45,000
Engineering 10,000
Total $55,000
8
12834 34th Ave S has broken pipe and catch basin.
Replace pipe and catch basin on slope below
Tukwila International Blvd. (Hwy 99) and Riverton
Creek. 300 feet of HDPE and energy dissipator.
Construction $50,000
Engineering 10,000
Total $60,000
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9
On S 140th St between Pacific Hwy & 42nd Ave S. At
4020/4030 there is no drainage so water runs off S 140th
St onto parking lot of apartment complex there.
Provide at least 3 catch basins and pipe to correct
problem. Also, large thickened edge at north side of
road to direct water to new catch basins. Two Type
II manholes and 5 catch basins and 330 1.f. pipe and
300 1.f. of berm with north side street
overlay/buildup.
Construction $80,000
Engineering 15.000
Total $95,000
10
53rd Ave S & S 139th St. No drainage system on S 139th
St and water washes from 53rd Ave S around corner to S
139th St causing shoulder erosion and washing over of S
139th St down into Foster Park.
3 catch basins and approximately 250 feet of 12"
pipe.
Construction $60,000
Engineering 10.000
Total $70,000
11
46th Ave S & S 150th St. Shoulder is always washing out
and over the road onto down slope residents. No formal
drainage here. We can extend pipe up from 46th Ave S to
solve problem.
Install approximately 400 feet of 12" pipe and 4
Type I catch basins, and asphalt shoulder.
Construction $85,000
Engineering 14,000
•
Total $99,000
12
48th Ave S & S 134th St. Pipe plugs up and creates a
dam out of 48th Ave S endangering the residence below
and could lead to road washout and removal of sewer and
gas mains. (This project contingent upon construction of
CIP — S 134th St interceptor pipe.)
Replace undersized 18" pipe with approximately 40
feet of 30" RCP and cone trash rack. (Need to look
at this for larger fix.) HPA conditions may include
fish ladder.
Construction $60,000
Engineering 12.000
Total $72,000
13
Flooding at 56th Ave S/S 130th St intersection due to lack
of drainage pipe/outfall to river.
Rehabilitate existing 18" diameter line (to
Duwamish River outfall) in 56th Ave S at 130th St
(just west of BNRR) tracks.
City crews anticipate
completing this project
by end of 1999 through
own work force.
14
At Six-Star (D T & C) development on Interurban Ave S,
sloughout of hillside below Viewcrest Apartments.
Viewcrest Apartments originally drains to this ravine.
Would like to pipe to City system, thus reducing
excessive flows causing hillside erosion.
Provide approximately 325 ft. of 12" pipe and 3
Type I catch basins. Include stub out for property
just north of Six-Star development.
Construction $60,000
Engineering 12.000
Total $72,000
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15
Street drainage in 56th Ave S from S 139th St to 400 I.f. to
the south drains into and floods private properties. 56th
Ave S slopes to the east and the undersized drains on the
west side of 56th Ave S are ineffective to collect street
drainage. Also, 6" diameter drain pipe in S 139th between
56th Ave and 56th Place does not have capacity to carry
street drainage.
Provide 2301.f. 12" RCP pipe in 139th from existing
catch basin at 56th Place/S 139th to existing catch
basin on west side 56th Ave S/S 139th (include 4
new catch basins and 1 inlet structure). Also provide
short ditch at SE corner S 139th St/56th Ave S and
. 400 I.f. of asphalt berm along east side of S 139th St
from intersection.
Construction $38,000
Engineering 9,000
Total . $47,000
16
11638 Interurban Ave S — lack of drainage to serve area
(original watercourse blocked when in King County
jurisdiction) causing local flooding.
To be included in Allentown Study.
Uncover and extend drainage to ditch at Gateway
North development and construct 5 — 10 cfs pump.
Slipline existing 24" diameter pipe under Interurban
Ave S.
Construction $200,000
Engineering 30,000
Total $230,000
17
S 117th St & 40th Ave S. Ponding and flooding of yards
due to no formal drainage here and water runs off of road
onto private properties.
To be included in Allentown Study.
Extend 12" storm drain up to S 117th St on 40th Ave
S approximately 300 feet of pipe and 5 catch basins,
includes removal/replacement of sidewalk and
extending asphalt roadway shoulder to sidewalk.
Construction $70,000
Engineering 12,000
Total $82,000
(doc320)
Other Capital Projects
27%
Surface Water Expenditures
Debt Service
3%
Small Drainage Projects
28%
O &M
42%
Utilities. Committee
October 11, 1999
Present: Pam Carter, Chair; Steve Mullet, Jim Haggerton
Jim Morrow, Alan Doerschel, Brian Shelton, Ted Freemire, Pat Brodin, Ryan
Larson, Lucy Lauterbach
1. Surface Water Rate Increase Staff had studied both operations and the CIP to see what was
essential to the surface water utility. They learned that operations and maintenance were 42% of
their expenses. Looking carefully at how much was realistic to get done in capital, they
eventually pared down the CIP to include 28% for small capital projects, larger capital projects at
27 %, and debt service for bonds at 3 %. With the current CIP, they think they will be able to
design, engineer, and construct the projects as shown. They also looked at grants and loans to see
what was most cost efficient. Public Works Trust Funds are available at 1% interest if the City
matches the loan with a 30% match. With all these things, the staff calculated that without a rate
increase the City would run out of money in 2002. With a 40% rate increase, the utility should be
funded through 2005 without large unanticipated emergencies. Staff mailed 3,000 postcards
telling citizens of the public hearing on an increase on October 18.
Staff increased spending on small capital projects for 2000. This will allow seven residential
projects to be done. The committee talked about one project in the CBD. The P -17 pond by the
Minkler shops was made to handle a 100 -year storm, but because of the subsequent development
in the CBD, now can only handle a 24 -hour storm, of which there are quite a few. It recharges
(i.e. backs up into the pipes and ditches that drain into it) often. Steve asked about the overflows
being able to drain into Tukwila Pond, but the drains actually go from Tukwila Pond into P -17,
not the other way around.
The Public Works Trust Fund likes Tukwila's proposal for the Pacific Highway Bypass
Drainage, so we'll be able to get a loan for that. It will move our debt service from 3% to 5% of
the surface water budget, but it's a very good deal at 1% interest.
Jim H looked at the impact of a 40% rate increase on the budget and wondered if the public
wouldn't argue the rate increase was too high because there are large ending fund balances for
two or three years. Alan said the City would borrow $1.5m. to be able to afford the CIP. Second,
he said, staff moved projects out of the first six years, but they are still needed, and will have to
be done sometime. If the budget falls behind before 2005, the list of projects will be
unmanageable. Jim M said he had looked at various scenarios of waiting to raise rates, raising
some now and some in two years, or raising it 40% now. Only the latter amount will allow the
CIP to be done, even as pared back as it is now. Pam noted the current CIP does not allow
spending for salmon in any big way in case ESA results in new laws. Jim H asked what Kent and
Auburn do for surface water, and was told they generally have higher surface water rates. Jim M
said that staff does not se their small capital projects or 0 & M decreasing in the future, since
there will always be surface water projects. Steve noted that the CBD pays the lion's share of
these and other fees in the city. Alan projected the CBD pays at least 80% of the surface water
revenues. The committee wanted to make sure about the low- income fees, which Alan thought.
were 50% of the normal fees. Recommend rate increase to public hearing.
2. Cascade Water Alliance Jim M explained Cascade Water Alliance (CWA) has proposed an
amendment to the current agreement. It would allow those jurisdictions that join CWA, to drop
out without penalty for one year. Otherwise, they fear some jurisdictions that might join soon,
will not. November 15 is the date by which water utilities must join CWA if it is to happen this
year. This will give others a chance to negotiate something with Seattle if they can by
November, 2000. If it does fail, Tukwila will be out the administrative fee we pay of between
$20,000- 25,000. Steve thought nobody loses by extending the dropout period. Jim M asked if
this would get CWA to the 75% mark, and Steve and Ted thought it possibly could.
One negative point is the longer CWA takes to become finalized, the less credit Tukwila gets for
its old water, since Seattle is raising the cost of that water. In the end, everyone in CWA will
come out whole. Jim H said he was a little uneasy with the way CWA seems to be changing the
rules and money without a whole lot of notice. Tukwila's water contract with Seattle runs until
2012. Committee approval of amendment.
67C '
- Committee Chair approval
Utilities Committee
September 27, 1999
Present: Pam Carter, Chair; Steve Mullet, Jim Haggerton
Jim Morrow, Brian Shelton, Ted Freemire, Pat Brodin, Ryan Larson, Alan
Doerschel, Lucy Lauterbach
Agenda items:
1. Water Consumer Confidence Report Federal requirements dictate that all water utilities
give out water quality information every year starting this year. Seattle has already sent their
report out. Since we get our water from Seattle, getting the information was easy. Pat has been
working on putting together a large, folded information sheet that gives information and is easy
and interesting to read. The committee was generally supportive of the draft. Steve wanted to be
sure Tukwila didn't re- invent the wheel, and Pat assured him that staff had gotten Seattle's
database. After this first one, he said, it should be easy to put them together in future years. One
of the delays has been the graphics specialist has been too busy to work on it. Jim H wanted to
see what kind of comments from citizens it got. The committee agreed it was less intimidating
than other cities' models, with a good mix of local and technical information. It will be sent out
bulk mail for about $.25. Though there are only 2,000 customers, about 3,000 need to be sent out
so both owners and renters know about it. Steve asked about combining our notice with
Highline and Water District 125. Staff will follow up on that for next year. Information.
2. Surface Water Increase Jim M noted surface water rates are driven by the CIP. There is a
serious lack of funds to do the current program, and an increase is needed. The issue is what
projects to do, how soon, and how to increase the fund. The committee spent time reviewing the
2000 -2005 CIP. Staff said that the current list is much smaller than it was originally. It has been
cut to the bare minimum. Neighborhood drainage projects are being increased, and there is a
large project on the east side of Pac Highway to detain/treat water. Two bank stabilization
projects are also planned. Alan said staff doesn't want to delay if we can help it.
A 40% increase in the rate would raise homeowners' bills from $37 to $51. This increase would
cover basic operations and maintenance, plus two or three projects for two years. If the city can
leverage some grants, loans, or private funds, the increase could be stretched out from two to
three or even four years. The committee emphasized keeping expenses as low as possible.
Though Tukwila's rates are lower than other cities around us, those rates aren't as relevant as
keeping a close watch on our own costs.
Jim asked about apartments' costs for surface water, and was told the rate calculations are done
on impervious surface. Many other jurisdictions put their surface water bill on the property
assessment. Pam said if Tukwila did that, people wouldn't mind if surface water rates were
increased a small amount every two years.
Steve asked about a bond to get some projects done. Alan said the Public Works Trust Fund
gives out loans for 1 %, 2% and 3 %, depending on the amount the city matches the loan with. He
said a 40% increase would not cover the big projects the city has in its CIP. Last year Alain had
said the city would need 2 rate fund increases within 5 years. Regional basin studies have not
been done. Operations and maintenance costs have been understated in the current CIP, so costs
will be even higher than currently stated. The 40% increase would run out in 2002. Jim H asked
about a utility tax. Though almost all other cities do it; Tukwila does not have one. Though the
CIP has been pared down, Jim still needed more information to be able to get behind a surface
water increase.
Pam asked if the city takes care of ditches, and was told it does so. One problem is that people
who have trouble with streams on their property, think the city should fix their problems.
However, if the city does something on private property, it would have to do so for everyone,
which is a very large number of projects. The committee talked about the cost for businesses.
Though it can be expensive, it is apparently a business expense that people are used to by now.
Both the Mall and Costco have $12,000 bills, but have not complained about it.
All agreed this has needed fixing for years. Surface Water has had fewer funds than problems to
fix for a long time. Projects are often expensive to fix. The committee agreed to justify the
current proposal and work on leveraging the funds to make a 40% increase last 3 -4 years. They
wanted the costs, how it applies to residents, and the justification all worked out and easy to
understand. With more facts and how it will correct drainage problems in neighborhoods, they'll
look at the information next meeting. Reschedule.
Committee chair approval
INFORMATION MEMO
To: Mayor Rants
From: Public Works Directo
Date: September 16, 1999
Subject: Surface Water Rate Increase
ISSUE
Review and discuss the analysis and potential impacts of a surface water rate increase.
BACKGROUND
Surface water rates for the City of Tukwila were first established in 1989. Rates were again
reviewed in 1996 resulting in Ordinance 1779, which passed on 11/18/96 and increased surface
water rates 10% in 1997 and 12% in 1999. Those increases covered increases in operations,
maintenance and some utility improvements.
The current Six -Year Capital Improvement Program (CIP) cannot be implemented without
doing at least a 40% increase in the surface water rate. Current rate levels do not provide
sufficient funding for known deficiencies and needed infrastructure improvements.
Additionally, items looming on the horizon of the entire Six -Year Plan are regional detention
projects, water quality projects and the inevitable impact to nearly all capital improvements due
to the regulations of the Endangered Species Act.
Grant funding and other mitigations will be pursued where possible for those projects with
available grant or mitigation potential. These other proposed sources have preliminarily been
reviewed and entered into the current CIP.
The evaluation of the 40% rate increase is provided in the attached rate summary sheet.
RECOMMENDATION
For review and discussion only.
PB:ad
(P:al ice \InfoUC92799)
Stormwater Rates by Agency
iyti Q' {3 � :V Fr
�,> . t: Agency , ;t� p�
•
S ,-�> " r J r_ t
..�..�:� r. � >� {:•: .�_. ,:..... ..;
.d' �. v7, iii
Monthly Residential
�: �: Rate.,
_ .A� s. . p � .:�, .
Y... ,
, Effective t
• �,
,.. � Date ��,
a•--° -" •t
Equivalent Umt
. v. g ; ' ° - . ti,. £.
.:�t.30. f471Jt.(S�aY °R.
City of Tukwila
$ 3.08
1/1/99
4356
City of Bellevue
$ 8.51
1/1/98
City of Bothell
$ 5.56
1/1/98
City of Burlington
$ 3.10
4/1/98
2400
City of Edmonds
$ 3.70
4/1/98
3000
City of Kent
$ 2.44 to $ 6.98
1/1/98
2500
City of Mercer Island
$ 10.11
1/1/98
3471
City of Puyallup
$ 6.93
1/1/98
2800
City of Seattle
$ 3.59
1/1/98
City of Renton
$ 4.93
1/1/95
3000
City of Tukwila
CAPITAL FINANCIAL PLAN
for
2000 -2005
SURFACE WATER
'OTHER
PROJECT TITLE (Fund 412) 2000 2001 2002 2003 2004 2005 TOTAL SOURCES
Annual Neighborhood Drainage Program 600 400 300 500 425 75 2300 0
Pac Hwy S High Flow Bypass Drainage Impr'vmnts 585 1200 550 0 0 0 2335 770
Nelsen PI /Longacres - Phase II 157 0 0 0 0 0 157 157
Duwamish Basin Study 150 0 0 0 0 0 150 100
City Wide Water Quality Management Plan 121 1 1 1 1 1 126 0
Duwamish Riverbank Stabilization I 100 900 275 400 0 0 1675 1200
Duwamish Riverbank Stabilization II 40 500 375 0 0 0 915 750
Allentown Storm Drainage 30 205 0 0 0 0 235 0
NPDES Program 10 10 10 10 10 10 60 0
Surface Water Utility Plan (SWUP) 0 110 0 0 0 0 110 0
South CBD Levee Repair 0 0 84 0 0 0 84 0
Gilliam Creek Regional Detention 0 0 146 364 0 0 510 0
DrainageNactor Waste Facility 0 0 40 500 0 0 540 500
Fostoria Drainage (II, III) 0 0 0 100 250 0 350 0
Southgate Creek Channel Improvements 0 0 0 0 715 0 715 535
South 133 Street Water Course Rehabilitation 0 0 0 0 290 0 290 218
Strander Blvd. Pipe Replacement 0 0 0 0 40 102 142 0
Andover Park West 48 -inch Drain Rehab 0 0 0 0 30 370 400 0
S 143 Street Drain 0 0 0 0 24 31 55 0
Gilliam Creek 42 Ave S Culvert 0 0 0 0 25 100 125 0
Christensen Road 4 CFS Pump 0 0 0 0 0 80 80 0
S 134 Street/48 Avenue South Sediment Trap 0 0 0 0 0 255 255 0
Gilliam Creek (Above 42 Ave S) 0 0 0 0 0 0 0 0
Gilliam Creek North Fork 0 0 0 0 0 0 0 0
Gilliam Creek 250 cfs Storm Drain Pump Station 0 0 0 0 0 0 0 0
Riverton Basin Regional Detention 0 0 0 0 0 0 0 0
Southgate Basin Regional Detention 0 0 0 0 0 0 0 0
Tukwila Remaining Basin Regional Detention 0 0 0 0 0 0 0 0
Grand Total 1793 3326 1781 1875 1810 1024 11609 4230
P: \CIP \Cip412
printed 9/22/99
* Denotes other funding sources, grants, mitigations, etc.
City of Tukwila
CAPITAL FINANCIAL PLAN
for
2000 -2005
SURFACE WATER
Surface Water Rate Summary Sheet
2000 2001 2002 2003 2004 2005
* ** *REVENUES * **
Revenue from Billing 1286 1295 1304 1314 1323 1332
Grants/ Mitigations expected or proposed 257 1945 575 700 753 0
Other Revenues 75 75 75 75 75 75
TOTAL REVENUES 1618 3315 1954 2089 2151 1407
* ** *EXPENSES * **
Operations and Maintenance 758 781 812 845 878 913
Capital Improvements Program (CIP) 1793 3326 1781 1875 1810 1024
(Note: CIP shows project totals= city+other)
O & M + CIP TOTAL EXPENSES 2551 4107 2593 2720 2688 1937
REVENUE + FUND BALANCE (000's) 2507 3271 1118 614 45 -1236
ENDING FUND BALANCE (EXISTING RATES) ($44) ($836) ($1,475) ($2,106) ($2,643) ($3,173)
40% INCREASE IN YEAR 2000 RATE REVENUES 1807 1820 1833 1846 1859 1872
ENDING BALANCE w/Year 2000 40% INCREASE $477 $210 $100 $1 $0 $10
P:\CIP\Cip412
printed 9/23/99
* Denotes other funding sources, grants, mitigations, etc.
TO: Phil Fraser, Senior Engineer
FROM: Steve Lancaster, DCD Director ..:
DATE: October 30, 1995
SUBJECT: SEPA status, Surface Water Management Ordinance
(EPIC File 31 -91)
Upon reviewing your memo dated October 9, 1995, together with the October 18, 1995
draft Storm Water Management Ordinance and related environmental documentation, I
have found that the SEPA Determination of Non - significance issued for the proposed
ordinance on December 17, 1991 remains valid. Specifically, I have determined that:
1) changes to the proposed Storm Water Management Ordinance have not resulted
in a likelihood of significant adverse environmental impacts;
2) additional review of the October 18, 1995 draft Ordinance by the City and by the
Department of Ecology have not resulted in significant new information
indicating probable significant adverse environmental impacts; and
3) the Environmental Checklist submitted to the Department of Community
Development on June 7, 1991 adequately and accurately discloses the anticipated
environmental impacts associated with adoption of the Storm Water
Management Ordinance as currently proposed.
No further environmental review is required at this time.
cc: Ross Earnst
Ron Cameron •
Lucy Lauterbach
SJL /sds
MEMORANDUM
TO: Steve Lancaster, DCD Director
FROM: Phil Fraser, Senior Surface Water Enginee
DATE: October 9, 1995
SUBJECT: Surface Water Management Ordinance - DNS (EPIC File 31 -91)
Raj
Since the issuance of the original DNS for the City's Surface Water Management
Ordinance in `91, I've worked with the Rodney Sakrison (649 -7140) of the Washington
State Department of Ecology to assure compliance with WSDOE's requirements. The
attached 9/26/95 letter represents the results of this effort. For the past several months,
city staff have reviewed the Surface Water Management Ordinance with the Utilities
Committee and responded to the U.C. language changes. Also, I have reviewed the
9/15/95 (GMA) draft Comprehensive Plan and find the attached draft ordinance is in
accord with the policies in the draft Plan. Finally, I've -reviewed the attached SEPA
checklist and find the responses of the original. checklist still apply to the latest draft
Ordinance which is attached, with one minor ammendment: Page 2, Question A, 6:
Revise anticipated date to adopt this Ordinance to December, 1995.
I request the original DNS be amended with the attached latest draft of the Ordinance to
reflect WSDOE and Tukwila Utility Committee input.
From my review of Federal and State laws with Mr. Sakrson of DOE regarding this
document, RCW's 90.70.070 & .100 remains in effect as it was in `91 when the original
DNS was issued. The only change in State law is that the PSWQA will go out of
existence in June of `96 at which time all_ responsibilites for implementation transfer of
these RCW's are transferred to DOE (Federal law still does not apply to cities under
100,000 population). Therefore, I request withdrawal of the recently submitted
environmental checklist application as it only duplicates the original environmental
review process completed in `91.
This ordinance is scheduled to go to the Utilities Committee in early November of this
year with a recommendation to adopt by the end of `95. If you have any questions
regarding this matter or I may be of further assistance, do not hesitate to call me at 433-
0179.
Attachments (4)
cc. Lucy Lauterbach
Project File:94- DR12.6
PF:prEcode:Iigcm
STATE OF WASHINGTON
RECEIVED
SEP 2 71995
TUKWILA
PUBLIC WORKS
DEPARTMENT OF ECOLOGY
Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008 -5452 • (206) 649 -7000
September 26, 1995
Phil Fraser
Senior Engineer
Public Works Department
City of Tukwila
6300 Southcenter Blvd.
Tukwila, WA 98188
Dear Mr. Fraser:
On September 12, 1995 I received for review and comment a draft of the proposed Storm
Water Management Ordinance for the City of Tukwila. I am aware of the short
timeframe in which you are working, and I am sorry if this review has taken longer than
expected.
You are to be commended for having put together a very comprehensive and effective
storm water management ordinance, which I have concluded is in line with Ecology's
requirements for compliance with the Puget Sound Storm Water Management Program
(RCW 90.70.100). Upon further review, I suggest several optional modifications which
will more clearly and explicitly bring the proposed ordinance to equivalence with
Ecology's model ordinance. They are shown on the attached sheets.
Thank you for the opportunity to review the Storm Water Management Ordinance. I look
forward to working with the City of Tukwila in the future as the ordinance is
implemented.
If you have further questions about these comments please give me a call. My telephone
number is (206) 649 -7140.
Rodney Sakrison
Water Quality Program
Northwest Regional Office
r
Mr. Phil Fraser
9/26/95
Page 2
Comments and Recommended Modifications
City of Tukwila
Storm Water Management Ordinance
Section 1.3 Definitions
A defiinition of "Redevelopment" should be included. The intent should be to include
redevelopment as a regulated activity if it involves creation of additional impervious
surfaces above threshold levels.
Redevelopment - means. on an already developed site. the creation or addition of
impervious surfaces, structural development including construction. installation or
expansion of a building or other structure. and /or replacement of impervious
Surface that is not part of a routine maintenance activity: and land disturbing
activities associated with structural or impervious redevelopment.
New Section 1.7 (insert between existing 1.6 and 1.7)
Ordinance should have an explicit prohibition against illicit discharges to stormwater
drainage systems. A definition of "illicit discharges" is already found in Section 1.3.
1.7 Illicit Discharges
Illicit discharges to stormwater drainage systems are prohibited.
New Section 1.7.B.8. (following existing Core Requirement #7)
A new Core Requirement #8 Water Quality Control is suggested. This would be in line
with the newly proposed King County Surface Water Management Drainage Review
ordinance (dated August 16, 1995) and Ecology requirements.
8. Core Requirement #8. Water Quality Control. Proposed projects shall
provide water quality treatment facilities to mitigate polluted storm and surface
water runoff generated by the addition and /or replacement of five thousand square
feet or more of pollution generating impervious surface. These facilities shall
meet the applicable design and performance criteria of the City of Tukwila
Comprehensive Storm Water Management Plan or City drainage basin plans
prescribing specific design criteria which differ from those stated in the Surface
Water Design Manual.
Mr. Phil Fraser
9/26/95
Page 3
New Section 1.7.C.13. (following existing Special Requirement #12)
This suggested new Special Requirement is taken from the newly proposed King County
code and consistent with Ecology requirements.
13. Special Requirement #13. Source Control. If a proposed project
requires a commercial building permit. then water quality source controls
shall be applied to prevent rainfall and runoff from coming into contact
with pollutants to the maximum extent possible. Water quality source
controls shall be applied in accordance with the Surface Water Design
Manual.
--- l5
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•
City of Tukwila John W. Rants, Mayor
Department of Public Works Ross A. Eamst, P. E., Director
MEMORANDUM
TG: • Jack Pace, Senior Planner
FROM: Phil Fraser, Senior Engineer
DATE: September 12, 1995
• SUBJECT: City of Tukwila Storm Water Management Ordinance
- Request for DCD review /comments •
D.C.D.'s comments are requested on the attached. Storm Water Management Ordinance
now before the Utilities Committee. This ordinance is scheduled to go to back to the
October 3, `95 Utilities Committee with a recommendation to forward to the C.O.W. to
adopt. I request a meeting with yourself, Doug Micheau and myself at your earliest
convenience to review the status of the existing cnviron ental review process and other
D.C.D. input.
Attachment (1)
xc. Ron Cameron
Doug Micheau
File: 94- DR12.1
PF:prf:JP1.doc
6.300.Snuthcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206),433 -0179 • Fax (206) 431 -3665
PROPOSED ORD. REV. 10/18/95
NOTE:( *) or underlines are changes from City Att. /DOE comments;
inclined lettering are changes from UC comments
CITY OF TUKWILA
STORM WATER MANAGEMENT ORDINANCE
AN ORDINANCE of the City of Tukwila relating
to surface water management; stating the
purpose for comprehensive management of
surface and storm waters; providing
definitions; establishing when drainage
review and permit is required; requiring
engineering plans; establishing standards for
drainage design; establishing requirements
for drainage review; providing for critical
drainage areas; establishing procedures for
submitting engineering plans; establishing
procedures and conditions related to
construction timing and final approval;
establishing maintenance requirements;
requiring bonds and liability insurance;
establishing procedures in event of hazards;
establishing variance procedures;
establishing bond and insurance requirements;
authorizing administration; establishing
penalties and procedures for ordinance
violations; and establishing an effective
date; and amended Ordinance 1671 (T.M.C.
Section 8.45.030).
WHEREAS, Ordinances Nos. 1523 and 1549 and Resolution No. 1672 of
the City Council established a surface water utility, adopted a
comprehensive surface water plan and established surface water
charges; and
WHEREAS, King County has updated its Surface Water Runoff Policy
and has implemented a Surface Water Design Manual; and
WHEREAS, the City Council finds that the public health, safety and
welfare would be promoted by establishing similar comprehensive
and technical requirements for management of surface and storm
waters and to include a Surface Water Drainage Design Manual;
1
4 .e
WHEREAS, implementation of surface water management requirements
on future development needs to include these objectives:
Encourage single family residential housing
revitalization by allowing affordable housing, maximum
use of large lots and infill of the city's residential
neighborhoods.
Encourage small neighborhood commercial businesses by
allowing affordable places to start these businesses.
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF TUKWILA DO ORDAIN
AS FOLLOWS;
Section 1.Title, Purpose, Scope and Definitions.
1.0 Title
This Ordinance shall be known as the City of Tukwila
"Storm Water Management Ordinance" and may be so cited.
1.1 Purpose
The purpose of this Ordinance is to:
A. Control and /or prevent adverse impacts to private
and public property and threats to public safety
associated with surface water runoff.
B. Establish minimum requirements and procedures to
prevent damages to watercourses, wetlands, and
surface water conveyance systems.
C. Establish and enforce storm drainage standards for
development activities in the City of Tukwila.
D. Formally adopt the City of Tukwila Storm Water
Management Plan.
2
E. Implement application of surface water
requirements in such a manner to encourage single
family residential housing revitalization by 1)
maximum use of large lots and 2) infill of the
city's residential neighborhoods. Also, encourage
small neighborhood businesses by allowing
affordable places to start these businesses."
1.2 Scope
This Ordinance sets forth rules, regulations, and
processes to control storm drainage activities within
the City of Tukwila.
1.3 Definitions
Adverse Impact - Any deleterious effect on waters or
wetlands, to include but not limited to, effects
involving: quality, quantity, surface area, species
composition, aesthetics, usefulness for human or
natural uses, biological productivity, diversity,
and /or stability.
Agricultural Land Management Practices - Those
practices employed commercially and /or by residential
households to cultivate land for crop production which
ensure conservation of related soil and water
resources.
Applicant - Any person, firm, or governmental agency
proposing to carry out storm drainage activities in
connection with development of a project subject to
review under the Storm Water Management Ordinance.
Best Management Practice, or "BMP" means physical,
structural and /or managerial practices that, when used
singly or in combination, prevent or reduce pollution
of water.
3
Biofiltration - The simultaneous processes of
filtration, infiltration, absorption, and biological
uptake of
pollutants in stormwater that take place when runoff
flows over and through vegetated treatment facilities.
Biofiltration (Water Quality) Swale - An open vegetated
drainage channel providing water quality treatment of
surface and storm water runoff through biofiltration as
specified in the King County Surface Water Design
Manual.
Buffer (Also known as "Sensitive Area Buffer) - The
area contiguous to a sensitive area that is required
for the continued maintenance, function, and structural
stability of the sensitive area. (Refer to Sensitive
Areas Ordinance No. 1599.)
Clearing - Any removal of trees, brush, grass, ground
cover or other vegetative matter from a site which
exposes the earth's surface at the site.
Design Storm - A rainfall event which is selected by
the Engineer for purposes of design, specifying both
the return period in years and the duration in hours
(e.g., 25 yr /24 hrs).
Detention - The release of stormwater runoff from the
site at a slower rate than is collected by the
stormwater facility system, the difference being held
in temporary storage.
Detention Facilities - Facilities designed to hold
runoff while gradually releasing it at a predetermined
maximum rate.
4
Development - For the purposes of this Ordinance any
activity that requires a permit or approval, including
but not limited to a building permit, land altering
permit, flood control zone permit, shoreline
substantial development permit, conditional use permit,
unclassified use permit, zoning variance or
reclassification, planned unit development,
subdivision, short subdivision, master plan
development, building site plan, or right -of -way.
Development Standards - The formally adopted standards
prescribing the specific manner in which development is
to take place in the City of Tukwila.
Director of Public Works - the Director of the
Department of Public Works for the City of tukwila, or
Public Works Department Staff designated by the
Director to discharge the requirements of this
Ordinance.
Drainage Activity - See "Storm Drainage Activity ".
Drainage Facility - Structures or features, natural or
artificial, that convey, treat, and /or abate surface
water runoff, including but not limited to detention
facilities, retention facilities, and drainage
retention /abatement facilities.
Drainage Review - An evaluation by the City staff of a
proposed development's compliance with the drainage
requirements in the Surface Water Design Manual.
Drainage System - The drainage system comprised of
natural and artificial structures that convey surface
water within the City of Tukwila. This system includes
pipes, culverts, ditches, open channels, streams,
lakes, rivers, ponds, and detention and retention
ponds, as well as other types of conveyance facilities.
5
1 •
Drainage Treatment /Abatement Facilities - Any
facilities installed or constructed in conjunction with
a drainage plan for the purpose of treating storm and
surface water runoff to improve water quality,
excluding retention or detention facilities.
Engineer - A professional engineer licensed by the
State of Washington.
Engineering Plans - The drawings, plans,
specifications, contracts and permits which depict how
construction is to occur.
Erosion /sedimentation Control - Any temporary or
permanent measure taken to reduce erosion, control
siltation and sedimentation, and ensure that sediment
laden water does not leave the site.
Ground Water - Water in a saturated zone or stratum
beneath the surface or land or a surface water body.
Illicit Discharge - All non -storm water discharges . to
stormwater drainage systems that cause or contribute to
a violation of state water quality, sediment quality,
or groundwater quality standards, including but not
limited to sanitary sewer connections, industrial
process water, interior floor drains, car washing, and
gray water systems.
Impervious Surface - Those hard surfaces which prevent
or retard the entry of water into the soil in a manner
that such water entered the soils under natural
conditions prior to development; or a hard surface area
which causes water to run off the surface in greater
quantities or at an increased rate of flow from the
flow present under natural conditions prior to
development. Such surfaces include, but are not
limited to, rooftops, asphalt or concrete paving,
compacted surfaces, or other surfaces which similarly
affect the natural infiltration or runoff patterns
existing prior to development.
6
Interflow - That portion of rainfall or other natural
source of water that infiltrates into the soil and
moves laterally through the upper soil horizons until
intercepted by a stream channel or unit that returns to
the surface (e.g., wetland, spring or seep).
King County Surface Water Design Manual (as defined in
this ordinance) - The manual (and supporting documents
as appropriate) describing surface and storm water
design and analysis requirements, procedures and
guidance which is hereby adopted by reference. A copy
of the Manual is on file in the office of the City
Clerk for use and examination by the public. In
application of the King County Surface Water Design
Manual, the minimum design standards of the Washington
State Department of Ecology's Technical Manual shall
also be met.
Master Drainage Plan - The adopted City of Tukwila
Surface Water Comprehensive Plan, April 1993 or update.
Natural Location - The location of those channels,
swales, and other natural conveyance systems as defined
by the first documented topographic contours existing
for the subject property, either from maps or
photographs, or such other means as appropriate.
Permittee - Any person obtaining a Storm Drainage
Permit in accordance with this Ordinance.
Pervious Surface - Any surface that significantly reduces surface
runoff by rapid infiltration into permeable soils or by
retention /absorption /transpoevaporation by plant cover.
Plan - See Engineering Plans.
7
Pollutant - Any substance which, when added to water, would contaminate
or alter the chemical, physical, or biological properties of any waters
of the City's drainage system or of the State. This includes a change
in temperature, taste, color, turbidity, or odor of the waters, or such
discharge of any liquid, gaseous, solid, radioactive, or other
substance into any waters of the City's drainage system or of the State
as will or is likely to create a nuisance. It also includes any
substance which renders such waters harmful, detrimental, or injurious
to the public health, safety, or welfare, or to domestic, commercial,
industrial, agricultural, recreational, or other legitimate beneficial
uses, or to livestock, wild animals, birds, fish, or other aquatic
life.
Private Drainage System - Drainage systems located on private property
and designed to discharge directly as through pipes, channels, etc., or
indirectly as sheet flow, subsurface flow, etc. into the City's
drainage system.
Public Drainage System - That portion of the drainage system of the
City located on public right -of -way or other property owned by the
City, and those portions of private drainage systems assumed by the
City.
Public Works Director - see Director of Public Works.
Receiving Bodies of Water - Creeks, streams, lakes, and other bodies of
water into which drainage systems are directed, either naturally, in
*ditches, or in closed conduit systems.
Redevelopment - means on an already developed site. the creation or
addition of expansion impervious surfaces, structural development
including construction. installation or expansion of a building or
other structure. and /or replacement of impervious surface that is not
part of a routine maintenance activity; and land disturbing activities
associated with structural or impervious redevelopment.
Retention Facilities - Facilities designed to hold water for a
considerable length of time and then release it by evaporation, plant
transpiration and /or infiltration into the ground.
Runoff - Water traveling across the ground surface as a result of
precipitation or other natural source.
Sediment - Solid particulate matter, both mineral and organic, that has
been or is being transported from its original site by water, air,
gravity, or ice.
8
Sensitive Area - Wetlands, watercourses, landslide
hazard areas and abandoned coal mines as designated or
defined by the City of Tukwila Sensitive Area Ordinance
Number 1599.
Sensitive Area Buffer - See "Buffer ".
Site - A legally defined section of real property,
whose boundaries are recorded for purposes of assessing
taxes with the county Assessor's Office, where storm
drainage activities are proposed; which may include all
contiguous land and /or water in one ownership, or being
developed as a unit, although not necessarily at one
time.
Small Parcels - Parcels which do not meet the threshold
requirements for formal drainage review as outlined in
Sections 1.4, 1.5 or 1.7 of this Ordinance.
Stabilization - The prevention of soil movement by any
various vegetative and /or structural means.
Storm Drainage Activity - Any activity involving
design /construction of surface water facilities that
control or affect surface and storm water, including
new facilities, modifying or abandoning existing
facilities. Storm drainage activity is recognized if
the threshold criteria of this Ordinance is met or
exceeded as defined in Section 1.5 of this Ordinance.
Storm Drainage Plan - See Engineering Plans
Storm Water - Water originating from rainfall and other
precipitation that is found in drainage facilities,
rivers, streams, springs, seeps, ponds, lakes and
wetlands as well as shallow ground water. The term
"runoff" is synonymous.
9
Storm Water Quality Control Measures - Qualitative
control of storm water runoff through a system of
vegetative, structural, and other measures designed to
reduce or eliminate pollutants that might otherwise be
carried by storm water runoff.
Storm Water Quantity Control Measures - Quantitative
control of storm water runoff through a system of
vegetative, structural, and other measures designed to
mitigate increased volumes and rates of flow brought
about by man -made changes to the land.
Storm Water Standards - Those drawings, details, and
requirements adopted by the City of Tukwila, which
depict the manner in which storm water control measures
and associated facilities must be constructed and
maintained.
Surface Water - The naturally occurring water that
flows over or is stored upon the earth's surface
(a.k.a. storm water).
Temporary Control Measures - Quantitative or
qualitative drainage controls for construction or
emergency activities.
Temporary Drainage Facility - Temporary structures or
features, natural or artificial, that convey, treat,
and /or abate surface water runoff.
Water Course - Any course or route formed by nature or
modified by man, generally consisting of a channel with
a bed and banks or sides substantially throughout its
length along which surface water flows naturally (other
than the Green /Duwamish River). The channel or bed
need not contain water year- round. Water courses do
not include irrigation ditches, the storm water system
or other entirely artificial water courses unless they
are used by salmonids or to convey sections of streams.
Watershed - The total drainage area, separated by a
ridge line which contributes runoff to a single point.
10
Wetland - An area that is inundated or saturated by
ground or surface water at a frequency and duration
sufficient to support and, that under normal
circumstances does support, a prevalence of vegetation
typically adapted for life in saturated soil
conditions. Wetlands generally include swamps, bogs,
and similar areas (Army Corps of Engineers Regulation
33 CFR 323.2(c)). Constructed wetlands are not
considered wetlands for the purpose of this Ordinance,
however, those artificial wetlands intentionally
created from non - wetland areas to mitigate conversion
of wetlands as permitted by the City shall be
considered wetlands.
Wetponds - Drainage facilities for water quality
treatment that contain a permanent pool of water,
usually four feet in depth, that are filled during the
initial runoff from a storm event. They are designed
to optimize water quality by providing retention time
(on the order of fine sediment to which pollutants such
as heavy metals absorb, and to allow biologic activity
to occur that metabolizes nutrients and organic
pollutants.
Wetvaults - the same as wetponds except that permanent
pool of water is covered by a lid which blocks sunlight
from entering the facility, limiting the photodependent
biologic activity.
1.4 The Drainage Review and Drainage Permit Process
Developments in the City of Tukwila that propose storm
drainage activities or trigger any of the land
use /development activities listed below in Section 1.5 of
this ordinance, require a DRAINAGE REVIEW (See Sections 1.7
through 1.9 for requirements).
If CONSTRUCTION of drainage facilities will result from the
land use /development activity or drainage activity, then a
DRAINAGE PERMIT will be applied for (See Section 2 for
requirements).
11
The DRAINAGE REVIEW and DRAINAGE PERMIT may be applied for as
one application.
EXEMPTIONS and THRESHOLDS for applying for the DRAINAGE
REVIEW and DRAINAGE PERMIT are listed in Sections 1.5 and 1.6
of this ordinance.
SMALL PARCELS. For development that contains drainage but is
exempt from the criteria listed above and is not adjacent to
a flood plain or sensitive area a plan showing connections
(if connecting) to the public drain system will be submitted
as part of the building permit. This drain plan does not
have to be done by an engineer. Additional temporary erosion
controls will be in accordance with the City's Land Altering
Ordinance and erosion control methods will be in compliance
with Tukwila's Erosion Control Standards (available at the
permit counter).
1.5 Drainage Review - When Required
A. A drainage review is required for any proposed
development* activities listed in Subsection B of
this Section which would:
1. Add more than five thousand (5,000) square
feet of new impervious surface; or
2. Collect and concentrate surface and storm
water runoff from a drainage area of more
than five thousand (5,000) square feet; or
3. Contain or abut a floodplain, stream, lake,
wetland or closed depression, or a sensitive
area as defined by ordinance or as determined
by the Public Works Director.
12
4
B. The following land use /development activities will be required to
have a drainage review if the project involves any of the planned
actions listed in Subsection A of this Section:
1. Commercial building;
2. Conditional use;
3. Formal subdivision (plat);
4. Land altering /sensitive area and /or Flood Zone Control
permit;
5. Master plan development;
6. Planned unit development;
7. Residential building (up to 4 single family lot
developments), each lot will be considered a separate land
use /development activity for purposes of drainage review
and application of threshold design requirements of this
Ordinance.
8. Right -of -way use;
9. Shoreline substantial development;
10. Administrative subdivision (short plat);
11. Special use;
12. Unclassified use;
13. Zoning reclassification.
1.6 (THERE IS NO SECTION 1.6)
Illicit Discharges
Illicit discharges to stormwater drainage systems are prohibited.
13
1.7 Drainage Review Requirements
A. Storm Water Design Standards
All storm drainage activities shall be undertaken in accordance
with the following criteria and standards:
1. Design Criteria. Storm water management measures shall be
designed and constructed in accordance with the standards
and specifications as set forth in the Surface
14
_ Water Design Manual, January 1992, or as
amended hereafter, published by King County
Public Works Department - Surface Water
Division, and shall further meet the
requirements of the Department of Ecology, If
such Department of Ecology standards are
different.
2. Additional Criteria in Basin Plans. Where
the City of Tukwila Comprehensive Storm Water
Management Plan or City drainage basin plans
prescribe specific design criteria which
differ from those stated herein or as
prescribed in the Surface Water Design,
Manual, the requirements of the drainage
basin plans shall govern.*
3. City Development Standards. Specific detail
drawings and design criteria for storm
drainage facilities and storm drainage
activities shall also be constructed or
undertaken in accordance with applicable City
of Tukwila Development Standards.*
4. Storm water detention and /or water quality
treatment will be required on -site unless a
variance is granted or an existing regional
facility is utilized or new one constructed.
5. A regional facility, if approved by the
Council, will be constructed as part of the
development, with latecomer's fees attached
to other future developments. Also, at the
Council's discretion, the regional facility
may be constructed through the formation of a
ULID. Finally, the City may elect to build
the facility, and assess a latecomer's fee.
15
j- 4
B. Core Requirements. Every permit or approval
application with drainage review required by
Section 3 of this Ordinance must meet each of the
following core requirements which are described in
detail in the Surface Water Design Manual;
1. Core Requirement #1. Discharge at the
natural location. The discharge from a
project site must occur at the natural
location and /or produce no significant
adverse impact, as described in the Surface
Water Design Manual.
2. Core Requirement #2. Off -site analysis. All
projects must identify and upstream tributary
drainage area and perform a downstream
analysis. Levels of analysis required depend
on the problems identified or predicted. At
a minimum, a level one analysis as described
in the Surface Water Design Manual must be
submitted with the initial permit
application.
3. Core Requirement #3. Runoff control. All
projects shall provide runoff controls to
control the quantity and quality of runoff
from the project by limiting the peak rates
of runoff from design storm events to the
predeveloped peak rates based on the project
site's existing runoff conditions. The
design volume, when detention facilities are
required by the Surface Water Design Manual
to meet the standard runoff control
performance curve for the two- and ten -year,
twenty -four hour duration design storm
events, shall be increased by a thirty
percent factor for safety. This factor of
safety shall be reviewed as new research is
completed to evaluate its effectiveness.
4. Core Requirement #4. Conveyance system. All
conveyance systems for projects must be
16
analyzed, designed and constructed for
existing tributary off -site flows and
developed on -site flows from the project.
5. Core Requirement #5. Erosion /sedimentation
control plan. All engineering plans for
projects that involve modification or
significant impact to existing drainage
facilities and /or construction of new
drainage facilities must include a plan to
control erosion and sedimentation during
construction and to permanently stabilize
soils at the site.
6. Core Requirement #6.
Maintenance and
operation. Maintenance of all drainage
facilities constructed or modified by a
project is the responsibility of the property
owner as described in the Surface Water
Design Manual, except the City may perform
maintenance of drainage facilities
constructed for formal plat subdivisions, and
some short plat subdivisions, two years after
final plat recording following an inspection
by the City.
Special Drainage Charge: When the City
accepts drainage infrastructure that requires
upkeep in excess of normal maintenance, the City has the
right to charge the benefitting parties a special drainage
fee to cover costs for this maintenance in addition to the
City's normal surface water charge, as a condition of
turnover.
7. Core Requirement #7. Bonds and liability. All drainage
facilities for projects (except downspout roof drain
infiltration systems) must comply with the bond and
liability requirements of Section 9 of this Ordinance.
17
$� Core Requirement #8. Water Ouality Control. Proposed
projects shall provide water quality treatment facilities
to mitigate polluted storm and surface water runoff
generated by the addition and /or replacement of five
thousand square feet or more of pollution generating
impervious surface. These facilities shall meet the
applicable desk and performance criteria of the City of
Tukwila Comprehensive Storm Water Management Plan or City
drainage basin plans prescribing specific design criteria
which differ from those stated in the Surface Water Design
Manual.
C. Special Requirements. In addition to the core requirements,
engineering plans must also meet any of the following special
requirements which apply to the project and which are described
in detail in the Surface Water Design Manual:
1. Special Requirement #1. Critical drainage area. If a
project lies .within an area designated by Ordinance or by
the Public Works Director (Refer to Section 1.8 of this
Ordinance)as a "critical drainage area ", then the project
drainage review and engineering plans shall be prepared in
accordance with special critical drainage area
requirements adopted by the Public Works Director.
2. Special Requirement #2. Compliance with an existing
master drainage plan. If a project lies within an area
covered by an approved master drainage plan, then the
project drainage review and engineering plans shall be
prepared bin accordance with any special requirements of
the master drainage plan.
3. Special Requirement #3. Conditions requiring a master
drainage plan. If a project:
a) Is a master planned development as described in an
adopted comprehensive plan or other ordinance; or
b) Is a subdivision that will eventually have more than
one hundred single - family lots and encompass a
contiguous drainage sub -basin of more than two
hundred (200) acres; or
18
c) Is a commercial building permit or planned
unit development that will eventually
construct more than fifty (50) acres of
impervious surface; or
d) Will clear an area of more than five
hundred (500) acres;
then a master drainage plan shall be prepared
as specified in the Surface Water Design
Manual and submitted with the State
Environmental Policy Act (SEPA) checklist.
Approval of the master drainage plan is
required before permit approval.
4. Special Requirement #4. Adopted basin or
community plans. If a project lies within an
area included in an adopted basin or
community plan, then the project drainage
review and engineering plans shall be
prepared in conformance with the special
requirements of the adopted basin or
community plan.
5. Special Requirement #5. Special water
quality controls. If a project will
construct more than one acre of impervious
surface that will be subject to vehicular use
or storage of chemicals and
a) Proposes to discharge runoff directly to
a regional facility, receiving water
body, lake, wetland, or closed
depression to provide the runoff control
consistent with Core Requirement #3; or
19
k
b) The runoff from the project will
discharge into a Type 1 or 2 stream, or
Type 1 wetland within one more from the
project site; then a wetpond meeting the
standards as specified in the Surface
Water Design Manual shall be employed to
treat a project's runoff prior to
discharge from the project site. A
wetvault or water quality swale may be
used when a wetpond is technically not
feasible.
6. Special Requirement #6: Coalescing plate
oil /water separators. If a project will
construct more than five acres of impervious
surface that will be subject to petroleum
storage or transfer, or high vehicular (more
than twenty -five hundred vehicle trips per
day) or heavy equipment use, storage or
maintenance, then a coalescing plate or
equivalent oil /water separator shall be
employed to treat a project's runoff prior to
treatment by a wetpond, wetvault, or water
quality swale, and /or discharge from the
project site.
7. Special Requirement #7: Closed depressions.
If a project will discharge to an existing
closed depression either on or off the site
that has greater than five thousand (5,000)
square feet of surface area at potential
overflow, then the project's drainage review
and engineering plans must meet the
requirements for closed depressions as
specified in the Surface Water Design Manual;
20
8. Special Requirement #8: Use of lakes,
wetlands or closed depressions for runoff
control. If a project proposes to use a
lake, wetland, or closed depression for
runoff controls required by Core Requirement
#3, then the project must meet the
requirements of the City's Sensitive Areas
Ordinance 1599 for such use, and must observe
the limits of any increases to the floodplain
as specified in the Surface Water Design
Manual;
9. Special Requirement #9: Delineation of one
hundred year floodplain. If a project
contains or abuts a stream, lake, wetland or
closed depression, then the one hundred year
floodplain boundaries and floodway, if
available, based on an approved floodplain
study as specified in the Surface Water
Design Manual shall be delineated on the site
improvement plans and profiles and on any
final plat maps prepared for the project;
10. Special Requirement #10: Flood protection
for the Green River /Duwamish waterway. If a
project contains or abuts any portion of the
Green River /Duwamish waterway that has an
existing flood protection facility or
involves construction of a new, or
modification of existing flood protection
facility, then the flood protection facility
shall be analyzed and /or designed as
specified in accordance with the City's Flood
Ordinance (Ordinance Nos. 2462 & /499) and in
the Federal Emergency Management (FEMA)
regulations (Title 44 CFR).
21
11. Special Requirement #11: Geotechnical analysis and
report. If a project includes construction of a pond for
drainage control or an infiltration system (excluding a
roof downspout system) above a steep slope (as defined in
the Surface Water design Manual) within two hundred (200)
feet from the top of the steep slope or on a slope with a
gradient steeper than fifteen percent (1590, or
construction of earth fill /bank armor for flood protection
facilities, then a geotechnical analysis and report shall
be prepared and stamped by a geotechnical professional
civil engineer which shall address, at a minimum, the
analysis described in the Surface Water Design Manual;
12. Special Requirement #12: Soil analysis and report. If
the soils underlying a project have not been mapped, or if
the existing soils maps are in error or not of sufficient
resolution to allow the proper engineering analysis for
the proposed site to be performed, then a soils analysis
and report shall be prepared and stamped by a professional
civil engineer with expertise in soils to verify and /or
map the underlying soils by addressing at a minimum the
analysis described in the Surface Water Design Manual.
Special Requirement #13: Source Control. If a proposed
project requires a commercial building permit, then water
quality source controls shall be applied to prevent
rainfall and runoff from coming into contact with
pollutants to the maximum extent possible. Water quality
source controls shall be applied in accordance with the
Surface Water Design Manual.
1.8 Critical Drainage Areas
Development in areas where the Public Works Director has determined
that the existing flooding, drainage, and /or erosion conditions present
an imminent likelihood or harm to the welfare and safety of the
surrounding community, shall meet special drainage requirements set by
the Public Works Director until such time as the community hazard is
alleviated. Such conditions may include the limitation of the volume
of discharge from the subject property to predevelopment levels,
preservation of wetlands or other natural drainage features, or other
controls necessary to protect against community hazard. Application of
the provisions of this subsection may be proposed for a variance,
provided that the resulting development shall be subject to all of the
remaining terms and conditions of this Ordinance.
22
1.9 Other Laws
A. State water pollution control Act (RCW 90.48.080),
and any other applicable law or regulation will be
adhered to in the administration of this
Ordinance.
B. Whenever conflicts exist between federal, state,
or local laws, ordinances or regulations, the more
restrictive provisions shall apply, except as
prescribed in Section 1.7.A.2 of this Ordinance.
C. Neither this Ordinance nor any administrative
provisions made pursuant to it:
1. Exempts the Permittee from procuring other
required permits or complying with the
requirements and conditions of such a permit;
or,
2. Limits the right of any person to maintain,
at any time, any appropriate action, at law
or in equity, for relief or damages against
the permittee arising from the permitted
activity.
Section 2 General Storm Drainage Permit Provisions.
2.1 Permit Requirements
The following provisions shall apply to all storm
drainage activities permitted within the City of
Tukwila, unless specifically exempted by this
Ordinance:
A. Permit Required - A Storm Drainage Permit is
required for all proposed storm drainage
activities in the. City of Tukwila. This permit
shall not be issued without first obtaining a
Land - Altering Permit if required; provided
however, that any substantially similar elements
as determined by the Public Works Director,
23
required for application to obtain a Land - Altering
Permit may also be utilized for application to
obtain a Storm Drainage Permit.*
B. Plan Required - All work shall be performed in
accordance with a sequence shown on an approved
Storm drainage Plan.
Engineering Plans - Contents - All submittal
procedures, definitions, and specifications for
the required contents of engineering plans are
presented in the plan review process section of
the Surface Water Design Manual.
C. Storm Water Control Measures - All storm drainage
activities shall include storm water control
measures designed to maintain post - development
peak discharges (for the specified design storm
event) at levels equal to or less than the pre -
development peak discharges for the same design
storm event through control of volume, timing, and
rates of flows unless direct discharge into the
Green /Duwamish River can be achieved without
sacrificing downstream conveyance systems under
full build conditions for the Duwamish basin.
D. Storm Water Quality ,Control Measures - All storm
drainage activities shall include storm water
control measures designed to maintain or enhance
water quality to the standards in effect at the
time a Storm Drainage Permit is issued.
E. Additional Requirements for Sensitive Areas - In
addition to any requirements, standards, and
criteria contained in this Ordinance, all storm
drainage activities occurring in a Sensitive Area
or its Buffer must comply with the constraints
and conditions imposed by the Tukwila's Sensitive
Areas Ordinance as implemented by the City of
Tukwila Department of Community Development.
24
F. Clarification of Requirements - The Public Works
Director may provide technical updates to the King
County Surface Water Design Manual as new
technical methods and means become available.
2.2 Permit Authority
The Director of the Public Works Department for the
City of Tukwila is the responsible Administrative
Officer of this Ordinance and his /her authority
includes the establishment of Regulations and
Procedures to carry out the intent of this Ordinance.
2.5 Application for Storm Drainage Permit
The application for a Storm Drainage Permit shall be
submitted on the standard Utility Permit Application
Form provided by the Public Works Department. The
Application may also include the following:
A. Vicinity Map.
B. Site Plan.
C. Storm drainage Plan.
D. Maintenance Schedules and Agreements.
E. Work Schedule and Construction Cost Estimates for
each element in the required plans.
F. Hydrological Engineering Report.
G. Water Quality Analysis.
H. SEPA - State Environmental Policy Act.
I. Performance Bond or other Security.
J. Supplemental Requirements /Conditions by the Public
Works Director or the Department of Community
Development.
25
2.6 Description of Application Elements /Requirements
A. Vicinity Map - The vicinity map shall include the
following information:
1. Location of proposed storm drainage
activities in relation to the local drainage
basins as identified by the City of Tukwila
Comprehensive Storm drainage Plan on file in
the Department of Public Works.
2. Location of all water courses and other
natural surface water system elements
downstream from the proposed storm drainage
activities.
3. Identification of upstream and downstream
drainage areas, including watershed
boundaries and predominant intra -basin flow
paths.
B. Site Plan - The following information shall be
included on the Site Plan for proposed storm
drainage activities:
1. Location and description of all watercourses,
impoundments, wetlands, and other surface
water features on or adjacent to the site.
2. Topography of the site for existing and
proposed contours, in two -foot intervals and
delineation of slopes.
3. Delineation of the 100 year floodplain,
floodway, wetlands, streams and associated
buffers.
4. Proposed improvements including location and
description of all existing and proposed
buildings or other structures, impervious
26
surfaces, and storm drainage facilities, if
applicable.
5. Location and identification of all property
lines, existing and proposed easements for
the storm water management facilities, and
easements to provide adequate access for
inspection and maintenance from a public
right -of -way.
6. Location and identification of all existing
and proposed utilities.
C. Storm Drainage Plan - The applicant'is responsible
for submitting a Storm Drainage Plan which meets
the design requirements, including the
requirements of the current King County Surface
Water Design Manual, of this Ordinance. The
applicant shall specify on the drawings submitted
with such Plan that all clearing, grading,
drainage, construction and development shall be
conducted in strict accordance with the Plan. In
addition, any or all of the following information
may be required for inclusion in the Storm
Drainage Plan:
1. Structural details for and graphic
representation of all proposed drainage
system components and storm water management
facilities, including hydraulic calculations
for all system components and notes on
drawings specifying materials to be used.
2. Soils analysis, including test borings, which
are necessary for construction of small ponds
and /or infiltration facilities.
3. Construction specifications for all proposed
storm water management facilities.
27
4. Delineation and description of all temporary
drainage facilities, including erosion
control, to be employed during construction
of the permanent storm drainage system
together with a schedule for the maintenance
of such interim measures.
5. Integration, where applicable, of all storm
drainage facilities with the permanent
erosion control facilities required by the
Land - Altering Ordinance and any amendments
thereto; provided that such integration shall
in no way compromise the effectiveness of
such facilities.
D. Maintenance Schedules and Agreements for New
Drainage Facilities and City Wide Maintenance and
Monitoring Program for Existing Private Drainage
1. Minimum Standards
The following are minimum standards for the
maintenance of storm water facilities by
private property owners unlco3 publicly
ewnc .
a) Facilities shall be inspected annually
and cleared of debris, sediment and
vegetation when they affect the
functioning and /or design capacity of
the facility.
b) Grassy swales and other biofilters shall
be inspected monthly and mowed or
replanted as necessary. Clippings are
to be removed and properly disposed of.
c) Where lack of maintenance is causing or
contributing to a water quality or a
hazard problem, the City may take
immediate action to correct the problem.
If, after notification by the city, the
28
I , •
property owner fails to take immediate
action to correct the problem, the city
may take immediate action to correct the
problem, at the property owner's
expense; futhermore, the costs of such
work may be assessed as a lien against
the property on which such facilities
are located.
2. Maintenance Schedule for New Private Drainage
Facilities
Prior to receiving a Storm Drainage Permit,
the applicant shall provide a monitoring and
maintenance schedule for all permanent storm
drainage facilities that is binding on all
subsequent owners of the land directly served
by such facilities and conforms to the
following criteria:
a) The monitoring and maintenance schedules
required herein shall be developed for
the life of each storm drainage facility
and shall state the maintenance to be
completed, the time period for
completion, and who shall perform the
maintenance. The schedule shall also be
printed on the Storm Drainage Plan.
b) The monitoring and maintenance schedule
shall provide for access to the storm
drainage facilities by the Public Works
Department and shall be formalized as an
agreement between the property owner and
the City. Such agreement shall be
affixed to the titles of affected
properties and recorded with the King
County Auditor's Office.
29
c) The owner of the property on which storm
water facilities are constructed
pursuant to this Ordinance shall be
responsible for maintaining such
facilities. Failure of the owner to
maintain such facilities as prescribed
in the approved maintenance schedule may
result in the work being performed at
the direction of the Public Works
Director. When the property ownership
has been given prior notification from
the City and failed to maintain such
facilities as prescribed in the approved
maintenance schedule. the costs of such
work by the City may be assessed as a
lien against the property on which such
facilities are located. This action
shall be in addition to any other
enforcement provisions provided in this
Ordinance.
3. Establishment of City -Wide Maintenance and
Drainage Facilities:
By this Ordinance, the City establishes a
maintenance and monitoring program for
private drainage facilities within the City.
All private property owners will maintain
their facilities in accord with Section 2.4,
D, 1. Also, all private property owners will
comply with the following:
a) Ownerships will develop a monitoring and
maintenance schedule for the life of
each existing storm drainage facility
that states the maintenance to be
completed, the time period for
completion, and who shall perform the
maintenance.
30
b) The monitoring and maintenance schedule
will provide for the access to the storm
drainage facilities by the Public Works
Department.
c) The owner of the property on which storm
water facilities exist will be
responsible for maintaining such
facilities in accordance with the
maintenance standards set forth in the
King County Surface Water Design Manual.
Failure of the owner to maintain such
facilities as prescribed in the approved
maintenance schedule may result in the
work being performed at the direction of
the Public Works Director. When the
property ownership has been given prior
notification from the City and failed to
maintain such facilities as prescribed
in the approved maintenance schedule.
the costs of such work by the City may
be assessed as a lien against the
property on which such facilities are
located. This action shall be in
addition to any other enforcement
provisions provided in this Ordinance.
E. Work Schedule and Construction Cost Estimates (for
each element in the required plans) - When
required, the applicant shall submit for approval
a work schedule and construction cost estimates
containing the following:
1. The work schedule shall identify the proposed
date(s) when storm drainage facilities will
be constructed and when they will be
completed. A schedule of proposed date(s)
for construction and completion of any
interim storm drainage facilities shall also
be provided.
31
2. Construction cost estimates for any required
storm water facilities indicted on the Storm
Drainage Plan shall be provided in sufficient
detail to allow the Public Works Director to
determine the appropriate dollar amounts for
required securities and /or insurance.
F. Hydrological Engineering Report - A hydrological
engineering report, when required, shall contain
all calculations required to determine the
suitability of the site for the proposed
development as well as the adequacy of all storm
water facilities to be constructed, to include:
1. Hydrology of the site including contributions
from upstream area as well as subsurface flow
patterns and volumes.
2. Hydraulic capacities and design dynamics for
all storm water facilities and maximum runoff
per design standards.
3. Capacities of the public systems downstream
from the proposed development following
construction.
4. Maximum water course velocities that can be
maintained without significant detriment to
the natural channels (e.g., scouring,
sedimentation, erosion, etc.).
5. The predicted path that storm water runoff
will take during storm events which exceed
system design capacities.
G. Water Quality Analysis - When required, the
applicant shall provide baseline data for storm
and surface water quality entering the site per
the parameters indicated in the current storm
water standards. Such data shall be accompanied
with conclusions regarding the positive and
negative effects of the development on the water
32
quality downstream from th,e site as well as the
predicted effects of on -site water quality
mitigation improvements, to include biofiltration
systems as required per King County Surface water
Design Manual. Documentation and test data
supporting all conclusions and recommendations as
well as notes delineating any hazardous substance
storage areas and proposed plans to protect water
courses from potential adverse impacts associated
with such storage shall also be provided.
H. SEPA (State Environmental Policy Act) - A Storm
Drainage Permit will not be issued prior to the
completion of the SEPA environmental review, when
required by the Department of Community
Development.
I. Performance Bond or Other Security - The Public
Works Director may require from the applicant a
surety, cash bond, irrevocable letter or credit,
or other means of security acceptable to the City,
prior to the . issuance of .a Storm Drainage Permit.
Such securities shall be administered in
accordance with Section 5.2. The amount of the
security shall not be less than the total
estimated construction cost of all interim and
permanent storm water control facilities and shall
not be fully released without final inspection and
approval of completed work by the City and the
provision of "as- built" plans.
J. Supplemental Requirements /Conditions *
1. General. The Public Works Director may
require supplemental studies, inspections ,
and /or testing by an approved testing agency
at any stage of the application or project.
In addition, he /she may require other
conditions deemed necessary to prevent the
storm drainage activities from being
conducted in a manner hazardous to life or
property, or in a manner likely to crete a
33
nuisance. All conditions must be identified
on the Storm Drainage Plan submitted for
approval.
2. Insurance. If, in the opinion of the Public
Works Director, the nature of the work is
such that it may create a hazard to human
life or endanger adjoining property, property
at a higher elevation, property at a lower
elevation, any street improvements, or any
other public property, the Public Works
Director shall require the applicant to file
a certificate of insurance in a timely
fashion. Certificates of insurance shall be
administered as prescribed in Section 4.3.
providcd that the Public Work3 Dircctor may
rcquirc insurancc in amount3 cxcccding that
3pccificd in Ccction 5.3 in ordcr to providc
adcquatc protcction from Storm drainagc
activitic3 po33c33ing a highcr ri3k
potcntial.
3. Special Conditions by the Department of
Community Development - In cases where the
proposed storm drainage activities discharges
to or alters a sensitive area, as defined in
the Sensitive Areas Ordinance. or any
ammendments thereto. the City of Tukwila
Department of Community Development may
require additional conditions or requirments
on the storm drainage plan prior to issuance
of the storm drainage permit.
2.5 Issuance of Storm Drainage Permits
A. Permits are not transferable without the approval
of the Public Works Director.
B.
In issuing a Storm Drainage Permit, the Public
Works Director may waive the requirement for any
or all plans or specifications upon finding that
the information on the application is sufficient
to demonstrate that the proposed work will conform
34
to the requirements of this Ordinance, other laws
and ordinances, 'and the Comprehensive Storm Water
Management Plan *; provided, however, that a
waiver of any section of this Ordinance shall not
be construed as a waiver of any other requirements
of this or related regulations and the applicant
shall remain bound by all conditions of the
application.
C. Permit Processing /Timing -
1. Within 60 days of receipt of an completed
application for a Storm Drainage Permit
(including all required accompanying
information), the Public Works Director will
review the application to determine if the
requirements of this Ordinance are met. The
Public Works Director may request comments
from other departments or agencies.
2. If the requirements of this Ordinance are
met, the Public Works Director shall approve
the Storm Drainage Plan, inform the
applicant, and issue a permit.
3. If the requirements are not met, the Public
Works Director shall inform the applicant in
writing and may either require additional
information, or disapprove the plan. Within
21 days of the receipt of any resubmittal,
the Public Works Director shall again
determine if the Plan meets the requirements
of this Ordinance and shall either approve or
disapprove said resubmittal.
4. If the Plan is disapproved, the Public Works
Director shall inform the applicant in
writing of the reasons for disapproval.
35
5. Upon review and approval
plans, the Public Works
approve the application,
issue the permit upon
applicable fees and the
required financial as
securities.
2.6 Amendment
of all required
Director shall
in writing, and
payment of any
provision of any
surances and /or
Application for amendment to a permit shall be in
written and /or graphic form and may be made at any time
through the same process as the original application.
Until such time as an amendment is approved by the
City, the storm drainage activity shall not proceed
except in accordance with the Storm Drainage Permit as
originally approved.
2.7 Storm Drainage Permit Fee
A non - refundable permit fee will be collected at the
time the storm drainage plan or application for the
waiver is submitted. The permit fee will provide for
the cost of: plan review; administration and
management of the permitting process; inspections; and,
variance and appeals processing pursuant to this
Ordinance. A permit fee schedule shall be established
by Ordinance of City Council based on the relative
complexities of storm drainage projects, and may be
amended from time to time.
2.8 Storm Drainage Permit Enforcement
If, through inspection or other means, it is determined
that a person engaged in a storm drainage activity has
failed to comply with approved Storm Drainage Plans
and /or other permit conditions, any or all enforcement
actions prescribed in this Ordinance may be initiated.
When permit violations are identified, a written notice
of violation shall be served upon that person by
registered or certified mail or other peresonal
service. The notice shall set forth the measures
36
necessary to achieve compliance with the plan, specify
the time period to commence and complete corrections,
and indicate the consequences for failure to correct
the violation.
A. Any Storm Drainage Permit issued by the City may be
suspended or revoked after written notice is given
to the permittee for any of the following reasons:
1. Any violation(s) of the conditions of the
Storm Drainage Permit.
2. Changes in site runoff characteristics upon
which a permit or waiver was granted.
3. Construction not in accordance with the
approved plans.
4. Non - compliance with correction notice(s) or
"stop work" order(s) issued for the
construction of temporary or permanent storm
water management facilities.
5. An immediate danger to ife, safety. or
property exists in a downstream area or
adjacent property as determined by the Public
Works Director.
B. In addition to the action under subsection A, the
Public Works Director may post a site with a "stop
work" order directing that all storm drainage
activities cease immediately. The issuance of a
"stop work" order may include any discretionary
conditions or standard requirements of the King
County Stormwater Design Manual, or city stadnards
which must be fulfilled before work under the
Storm Drainage Permit may continue.
37
C. No work element on the approved inspection
schedule shall proceed until the City inspects and
approves the work previously completed and
furnishes the permittee with the results of such
inspection.
2.9 Inspection Requirements During Construction
Regular inspections shall be made and logged by the
City's Utility Inspector (or his /her designee) at the
following intervals once storm drainage construction
activities have been initiated:
A. Prior to clearing, filling, or grading;
B. After storm events involving at least .5 inches of
precipitation.
C. Following installation of all temporary storm
drainage facilities;
D. Prior to and following installation of all
permanent storm water management facilities;
E. Prior to and following installation of water
quality control and flow attenuation devices;
F. During installation of all piping, catch basins,
inlet /outlet structures, concrete, and anti -seep
barriers /structures.
G. Following permanent revegetation of the site.
Section 3 System /Property Protection.
3.1 Determination of Risk /Hazard
If the Public Works Director determines that a
significant risk of accelerated erosion, off -site
38
sedimentation, decreased water quality, or other
adverse impact exists due to permitted storm drainage
activities he /she may require a revised Storm Drainage
Plan. Pending the preparation of the revised plan,
work shall cease or may continue under conditions
prescribed by the Public Works Director.
3.2 Emergency Action
Whenever the Public Works Director determines that the
acts or intended acts represented in the Storm Drainage
Plan constitute a hazard to life or safety, or endanger
property, or adversely affect the safety, use or
• stability of a public way, drainage channel, or
Sensitive Area or Buffer, the Public Works Director may
initiate all required actions to prevent or stop any
storm drainage activity. The developer or person
conducting or intending to conduct such activity, upon
notification by the Public Works Director shall, within
the period specified therein, terminate such
activities.
Section 4.General Administrative Provisions.
4.1 Liability
Liability for any adverse impacts or damages resulting
from work performed in accordance with any permit
issued on behalf of the City of Tukwila for the
development of any site within the City limits, shall
be the sole responsibility of the property owner.
4.2 Securities
For developments which may involve a risk of property
damages or possible hazards, the Public Works Director
may require the provision of financial responsibility
(bond, note, letter of credit, etc.) with the City to
mitigate damages should they occur. The following
provisions shall apply in instances where such
securities are required:
39
A. Such bond or other proof of financial
responsibility shall not exceed the estimated cost
of constructing and maintaining those improvements
which are the source of the risk or potential
hazard, provided that, in the case of storm
drainage activities which do not involve
expenditures at least equal to the cost of
remedying the possible adverse impacts of such
activities, the required financial responsibility
shall be equal to City Staff's best estimate of
the possible costs directly associated with
remedying the adverse impacts to public or private
properties not associated with the development.
B. The amount of any financial responsibility shall
not serve as a gauge or limit to the compensation
collected from a property owner as a result of
damages associated with any storm drainage
activity.
C. Financial responsibility shall be retained until
the completion of any project involving storm
drainage activity or following a prescribed trial
maintenance period.
D. Financial responsibility will be provided in
accordance with this Ordinance may be redeemed in
whole or in part by the City of Tukwila upon
determination by the Public Works Director that
any or all of the following circumstances exist:
1. Failure on the part of the party providing
such financial responsibility to fully
comply, within the time specified, with
approved plans and /or any corrective or
enforcement actions mandated by this
Ordinance; or,
2. Damages to public or property arising from
the activities for which the financial
responsibility was required.
40
4.3 Insurance
If, in the opinion of the Public Works Director, the
risks to property or life and safety associated with a
proposed development activity are substantial, said
official may require the property owner to purchase
liability insurance coverage in the following minimum
amounts:
A. Bodily injury
occurrence.
B. Property damage
occurrence.
liability - $1 million per
liability - $1 million per
The Public Works Director may require higher policy
limits than set forth above in those cases where the
minimum amounts are deemed insufficient to cover
possible risks. All insurance policies obtained in
accordance with these provisions shall name the City of
Tukwila as an "additional insured" and shall be written
by a company licensed to do business in the State of
Washington. Neither issuance of a permit, nor
compliance with these provisions or any other
conditions imposed by the City relieves any person from
any responsibility for damage to persons or property
otherwise imposed by law. Therefore, damages in an
amount greater than the insured amount; nor, imposes
any liability upon the City for damages to persons or
property arising from activities permitted by the City
or otherwise undertaken by any person.
4.4 Variances
The City may grant a written variance from any
requirements of this Ordinance if there are exceptional
circumstances applicable to the site such that strict
adherence to the provisions contained herein will
result in unnecessary hardship and not fulfill the
purpose of this Ordinance as set forth in Section 1. A
written request stating the specific variance sought
and the reasons supporting the approval of such
41
variances shall be provided to the Public Works
Director. The Public Works Director shall then provide
a recommendation in writing to the City Council and the
Council shall make the final determination.
A variance to this Ordinance shall not be granted
unless all of the following criteria are met:
A. Strict compliance with the provisions of this
Ordinance may jeopardize project feasibility or
reasonable use of property.
B. Proposed drainage facilities are consistent with
the purpose and intent of this Ordinance given in
Section 1.1.
C. The granting of the exception or standard
reduction will not be detrimental to the public
welfare or injurious to other property in the
vicinity.
D.
The recommendation of a licensed engineer supports
the variance.
4.5 Permits
The application for and issuance of permits as
prescribed in this Ordinance shall constitute the
administrative mechanism for the enforcement of the
provisions contained herein. Such permits shall be
non - transferable absent approval of the Public Works
Director and limited in scope to the specific
activities for which they are granted.
4.6 Penalties
The following penalties shall be applied in whole or in
part for the violation of permit conditions contained
in this Ordinance or the failure to obtain permits
required for activities regulated by this Ordinance.
All remedies shall be considered cumulative and in
addition to any other lawful action. Each day that a
violation of this Ordinance is committed or permitted
42
to continue constitutes a separate offense to which
both the civil and criminal penalties set forth below
shall apply.
A. Civil Penalties
1. The violation of or failure to comply with
any *order or requirement made in accordance
with the provisions of this Ordinance is a
civil violation. The provisions of T.M.C.
Chapter 8.45 shall be used to enforce this
chapter.*
2. It shall not be a defense to the prosecution
for failure to obtain a permit required for
this Ordinance, that a contractor,
subcontractor, person with responsibility on
the site, or person authorizing or directing
the work, erroneously believed a permit had
been issued to the property owner or any
other person.
* [Criminal Penalities section deleted at this time]
4.7 Abatement
Any storm drainage activity performed in violation of
this Ordinance or any lawful order or requirement of
the Public Works Director pursuant to this Ordinance,
shall be deemed to be a public nuisance and may be
abated.*
4.8 Injunctive Relief
A. Whenever the City has reasonable cause to believe
that any person is violating or threatening to
violate this Ordinance or any rule or other
provisions adopted or issued pursuant to this
Ordinance, it may either before or after the
institution of any other action or proceeding
authorized by this Ordinance, institute a civil
action in the name of the City for injunctive
relief to restrain the violation or threatened
43
violation. Such action shall be brought in King
County Superior Court.
B. The institution of an action for injunctive relief
under this section shall not relieve any party to
such proceedings from any *penalty prescribed for
violations of this Ordinance.
4.9 Appeals
A. The Appeals process that will be followed by any
person aggrieved by the action of the City is
provided under Section 8.45 of the Tukwila
Municipal Code. Prior to beginning the Appeals
process outlined under Section 8.45, an Appeal to
the Director will be initiated by any person
aggrieved by the action of any Public Works Staff
designated to enforce or administer any provision
of this Ordinance, in accordance with Section B.
below.
D. Appeal to Director - Any person aggrieved by the
action of any Public Works Staff designated to
enforce or administer any provision of this
Ordinance may appeal such action to the Director
of the Department of Public Works for the City of
Tukwila. Such appeals may be in person or in
writing and shall be made within fourteen (14)
days from the date that the action subject to
appeal was concluded. No further appeals. as
described under Section 8.45 of the Tukwila
Municipal Code, shall be heard without prior
determination on the subject of such appeal by the
Director of the Department of Public Works of the
City of Tukwila.
44
Section 5 Severability
If any portion of this Ordinance as now or hereafter
amended, is application to any person or circumstances
is held invalid or unconstitutional, such adjudication
shall not affect the validity of the Ordinance as a
whole, or any section, provision, or part thereof not
adjudicated to be invalid or unconstitutional and its
application to other persons or circumstances shall not
be affected.
Section 6 Effective Date.
This Ordinance shall take effect five (5) days from the
date of publication of the attached summary which is
hereby approved.
PASSED BY THE CITY COUNCIL OF TUKWILA, WASHINGTON, at a
regular meeting thereof this day of , 1995.
APPROVED:
John W. Rants, Mayor
Approved as to form
Office of the City Attorney Attest /Authenticated
FILED WITH THE CITY CLERK:
PASSED BY THE CITY COUNCIL:
PUBLISHED VALLEY DAILY NEWS:
EFFECTIVE DATE:
ORDINANCE NO.
Jane E. Cantu, City Clerk
stormwt9.ord
10/13/95
45
CITY OF TUKWILA
DEPARTMENT OF COMMUNITY DEVELOPMENT
FAX NUMBER: (206) 431 -3665
FAX NO.
8r) - /DOG
NUMBER OF PAGES
TRANSMITTED, INCL.
THIS COVER SHEET:
SENT BY
(INITIALS) :
IF THIS COMMUNICATION IS NOT 45
CLEARLY RECEIVED, PLEASE CALL:
I-3670
DEPARTMENT OF COMMUNITY DEVELOPMENT Office: (206) 431 -3670
6300 Southcenter Boulevard, Tukwila WA 98188 06/15/90
A F F I D A V I T O F
I, Sylvia A. Osby
O Notice of Public Hearing
Q Noticeof Public Meeting
OBoard of
Packet
OBoard of
Packet
Adjustment Agenda
Appeals Agenda
❑ Planning Commission Agenda
Packet
fl Short Subdivision Agenda
Packet
D I S T R I B U T I O N
hereby declare that:
O Notice of Application for
Shoreline Management Permit
0 Shoreline Management Permit
X
Determination of Non -
significance
Mitigated Determination of
Nonsignificance
Determination of Significance
and Scoping Notice
Notice of Action
Official Notice
Other
Other
was mailed to each of the following addresses on December 17, 1991
v-D N(
0.
Name of Project Storm Water Management
Ordinance
File Number EPIC -31 -91
Signatu
WAC 197 -11 -970
DETERMINATION OF NONSIGNIFICANCE
Description of Proposal Proposed Storm Water Management Ordinance
Proponent City of Tukwila Department of Public Works
Location of Proposal, including street address, if any City -wide
Lead Agency: City of Tukwila File No. EPIC 31 -9f
The lead agency for this proposal has determined that it does not have a probable
significant adverse impact on the environment. An environmental impact statement
(EIS) is not required under RCW 43.21C.030(2)(c). This decision was made after
review of a completed environmental checklist and other information on file with the
lead agency. This information is available to the public on request.
J There is no comment period for this DNS
[j This DNS is issued under 197 -11- 340(2). Comments must be submitted by
. The lead agency will not act on this
proposal for 15 days from the date below.
Responsible Official Rick Beeler
Position /Title
Address
Date
Planning Director
6200 Southcenter Boulevard,
eP`( Signature
Tukwil
Phone 433 -1846
8188
You may appeal this determination to the City Clerk at City Hall, 6200 Southcenter
Boulevard, Tukwila, WA 98188 no later than 10 days from the above date by written
appeal stating the basis of the appeal for specific factual objections. You may be
required to bear some of the expenses for an appeal.
Copies of the procedures for SEPA appeals are available with the City Clerk and
Planning Department.
FM.DNS
DRAFT
CITY OF TUKWILA
STORM WATER MANAGEMENT ORDINANCE
I. TITLE, PURPOSE, SCOPE, AND DEFINITIONS
1.0 TITLE
This Ordinance shall be known as the City of Tukwila
"Storm Water Management Ordinance" and may be so cited.
1.1 PURPOSE
The purpose of this Ordinance is to:
A. Control and /or prevent adverse impacts to private
and public property and threats to public safety
associated with surface water runoff.
B. Establish minimum requirements and procedures to
prevent damages to watercourses, wetlands, and
surface water conveyance systems.
C. Establish and enforce storm drainage standards for
development activities in the City of Tukwila.
D. Formally adopt the City of Tukwila Storm Water
Management Plan.
1.3 SCOPE
This Ordinance sets forth rules, regulations, and
processes to control storm drainage activities within
the City of Tukwila.
1.4 DEFINITIONS
Adverse Impact - Any deleterious effect on waters or
wetlands, to include but not limited to, effects
involving: quality,- quantity, surface area, species
composition, aesthetics, usefulness for human or
natural uses, biological productivity, diversity,
and /or stability.
Agricultural Land Management Practices - Those
practices employed commercially and /or by residential
households to cultivate land for crop production which
ensure conservation of related soil and water
resources.
Applicant - Any person, firm, or governmental agency
proposing to carry out storm drainage activities in
connection with development of a project for which City
reviews and /or permits are required.
1
Buffer - (Also known as "Sensitive Area Buffer ") - The
area contiguous to a sensitive area that is required
for the continued maintenance, function, and structural
stability of the sensitive area.
Clearing - Any removal of trees, brush, grass, ground
cover or other vegetative matter from a site which
exposes the earth's surface at the site.
Construction Documents - The drawings, plans,
specifications, contracts and permits which depict how
construction is to occur.
Detention Structure - A temporary or permanent
structure designed to collect storm water from a site
and release it at a slower rate than it is collected by
the drainage facility system, the difference being held
in temporary storage.
Develop - Any change to runoff characteristics of a
parcel of land in conjunction with residential,
commercial, industrial or institutional construction or
alteration. -
Development Standards - The formally adopted standards
prescribing the specific manner in which development is
to-take place in the City of Tukwila.
Director of Public Works - The Director of the
Department of Public Works for the City of Tukwila, or
Public Works Department Staff designated by the
Director to discharge the requirements of this
Ordinance; provided, however, that any delegation of
the administration and enforcement of this Ordinance
shall in no way absolve the Director of Public Works of
his /her responsibility for the actions taken by Staff
pursuant to such delegation.
Drainage Area - That area contributing runoff to a
single point measured in a horizontal plane, which is
enclosed by a ridge line (see Watershed).
Drainage Basin - Drainage Areas which serve as planning
units for the City's storm water management system as
defined in the City of Tukwila Comprehensive Storm
Water Management Plan.
Easement - A legal grant or reservation by a land owner
for the use of such land by others for a specific
purpose or purposes and which must be included in the
conveyance of land affected by such easement.
Engineer - A professional engineer licensed by the
State of Washington.
Exempt - Those land development activities that are not
subject to the surface water management requirements
contained in this Ordinance.
Flow Attenuation - Detention or retention of runoff to
reduce the peak rate and quantity of storm water
discharge.
Grading - Any excavating, filling, clearing, or the
creation of impervious surface, or any combination
thereof.
Infiltration - The passage or movement of water into
the soil surface.
On -site Storm Water Management - The design and
construction of systems necessary to control storm
water quantity or quality within the area being
developed.
Permittee - Any person obtaining a Storm Drainage
Permit in accordance with this Ordinance.
Public Works Director - See "Director of Public Works ".
Retention Structure - A temporary or permanent
structure with no surface outflow, designed to collect
and hold storm water runoff for a considerable length
of time and then release it by evaporation, plant
transpiration and /or infiltration into the ground.
Runoff - Water traveling across the ground surface as a
result of precipitation or other natural source.
Sediment - Solid particulate matter, both mineral and
organic, that has been or is being transported by
water, air, gravity, or ice, from its original site.
Sensitive Area - Wetlands, watercourses, landslide
hazard areas and abandoned coal mines as designated or
defined by the City of Tukwila Sensitive Areas
Ordinance.
Site - A legally defined section of real property,
whose boundaries are recorded for purposes of assessing
taxes with the county Assessor's Office, where storm
drainage activities are proposed; which may include all
contiguous land and /or water in one ownership, or
3
contiguous land and /or water in diverse ownership,
being developed as a unit, although not necessarily at
one time.
Stabilization - The prevention of soil movement by any
various vegetative and /or structural means.
Storm Drainage Activity - Any activity which results in
a change to the storm drainage pattern and /or runoff
characteristics of a site, or the redevelopment of a
site involving costs in excess of $250,000. or which
exceed 25% of the current assessed value of the site
prior to redevelopment.
Storm Drainage Facilities - The system of inlets,
conduits, channels, ditches, and appurtenances, which
serve to collect, control, convey, and treat storm
water through and /or from a given drainage area.
Storm Drainage Plan - A set of drawings or other
documents submitted by a person as a prerequisite to
obtaining a storm drainage permit, which contains all
of the information and specifications pertaining to
storm water management.
Storm Water - Precipitation that reaches the surface
water system by overland flow, interflow (a complex
transfer of water that occurs just below the surface of
the ground) or via constructed conveyance systems.
Storm Water Quantity Control Measures - Quantitative
control of storm water runoff through a system of
vegetative, structural, and other measures designed to
mitigate increased volumes and rates of flow brought
about by man -made changes to the land.
Storm Water Quality Control Measures - Qualitative
control of storm water runoff through a system of
vegetative, structural, and other measures designed to
reduce or eliminate pollutants that might otherwise be
carried by storm water runoff.
Storm Water Standards - Those drawings, details, and
requirements adopted by the City of Tukwila, which
depict the manner in which storm control measures and
associated appurtenances must be constructed and
maintained.
Surface Water - The naturally occurring water that
flows over or is stored upon the earth's surface.
Surface Water System - The network of depressions,
4
swales, channels, wetlands, ponds, streams, potholes,
and other features which have formed in the natural
topography over time to convey or store storm or
surface water. In some cases, portions of the natural
system have been channelized or otherwise altered.
Watercourse - Any course or route formed by nature or
modified by man, generally consisting of a channel with
a bed and banks or sides substantially throughout its .
length along which surface water flows naturally (other
than the Green /Duwamish River). The channel or bed
need not contain water year- round. This definition is
not meant to include irrigation ditches, the storm
water system or other entirely artificial watercourses
unless they are used by salmonids or to convey sections
of streams.
Watershed - The total drainage area, separated by a
ridge line which contributes runoff to a single point.
Wetland - An area that is inundated or saturated by
ground or surface water at a frequency and duration
sufficient to support and, that under normal
circumstances do support, a prevalence of vegetation
typically adapted for life in saturated soil
conditions. Wetlands generally include swamps, bogs,
and similar areas (Army Corps of Engineers Regulation
33 CFR 323.2(c)). Constructed wetlands are not
considered wetlands for the purpose of this Ordinance,
however, those artificial wetlands intentionally
created from non - wetland areas to mitigate conversion
of wetlands as permitted by the City shall be
considered wetlands.
1.5 OTHER LAWS
A. Whenever conflicts exist between federal, state,
or local laws, ordinances or regulations, the more
restrictive provisions shall apply.
B. Neither this Ordinance nor any administrative
provisions made pursuant to it:
1. Exempts the permittee from procuring other
required permits or complying with the
requirements and conditions of such a permit;
or,
2. Limits the right of any person to maintain,
at any time, any appropriate action, at law
or in equity, for relief or damages against
5
the permittee arising from the permitted
activity.
SECTION II. GENERAL PERMIT PROVISIONS
2.1 STORM WATER DESIGN STANDARDS
All storm drainage activities shall be undertaken in
accordance with the following criteria and standards:
A. Design Criteria. Storm water management measures
shall be designed and constructed in accordance
with the standards and specifications as set forth
in the Surface Water Design Manual; King County
Public Works Department- Surface Water Division;
Jan. 1990, or as amended hereafter.
B. Additional Criteria in Basin Plans. Where the
City of Tukwila Comprehensive Storm Water
Management Plan or City drainage basin plans
prescribe specific design criteria which differ
from those stated herein or as prescribed in the
Surface Water Design Manual, the requirements of
the drainage basin plans shall govern.
C. City Development Standards. Specific detail
drawings and design criteria for storm drainage
facilities and storm drainage activities shall
also be constructed or undertaken in accordance
with the City of Tukwila Development Standards.
2.2 MANDATORY PERMIT REQUIREMENTS
The following provisions shall apply to all storm
drainage activities permitted within the City of
Tukwila, unless specifically exempted by this
Ordinance:
A. PERMIT REQUIRED - A Storm Drainage Permit is
required for all proposed storm drainage
activities in the City of Tukwila. Said permit
shall not be issued without first obtaining a
Land- Altering Permit as required by Ordinance No.
1591; provided however, that any elements required
for application to obtain a Land - Altering Permit
may also fulfill the requirements for application
to obtain a Storm Drainage Permit upon approval of
the Public Works Director.
B. PLAN REQUIRED - All work shall be performed in
accordance with a sequence shown on an approved
Storm Drainage Plan.
6
C. STORM WATER QUANTITY CONTROL MEASURES - All storm
drainage activities shall include storm water
control measures designed to maintain post -
development peak discharge for the specified
design storm event at a level equal to or less
than the pre- development peak discharge for the
same design storm event through control of volume,
timing, and rates of flows.
D. STORM WATER QUALITY CONTROL MEASURES - All storm
drainage activities shall include storm water
control measures designed to maintain or enhance
water quality to the standards in effect at the
time a Storm Drainage Permit is issued.
E. ADDITIONAL REQUIREMENTS FOR SENSITIVE AREAS - In
addition to any requirements, standards, and
criteria contained in this Ordinance, all storm
drainage activities occurring in a Sensitive Area
or its Buffer must comply with the constraints and
conditions imposed by the Sensitive Areas
Ordinance as implemented by the City of Tukwila
Department of Community Development.
F. CLARIFICATION OF REQUIREMENTS - Within six (6)
months following the adoption of this Ordinance,
the Public Works. Director may prepare a special
addendum to the King County Surface Water Design
Manual to provide additional clarification and
outline special provisions which are specific to
the needs of the City of Tukwila.
2.3 PERMIT CONTROL OBJECTIVES
The following are basic objectives which are to be
considered in issuing a Storm Drainage Permit and /or
reviewing a Storm Drainage Plan:
A. STORM WATER MANAGEMENT - The storm water
management practices to be utilized in developing
a Storm Drainage Plan shall be according to the
following order of preference:
1. Infiltration of storm water on -site;
2. Flow attenuation by use of open vegetated
swales and natural depressions;
3. Storm water retention structures; and,
4. Storm water. detention structures.
7
B. PRESERVE EXISTING STORM WATER FEATURES - All storm
drainage activities shall be designed to preserve
existing patterns of run -off and preserve the
natural drainage systems existing prior to
development.
C. PROTECT SURFACE WATER SYSTEM - All storm drainage
activities shall be designed and undertaken to
prevent adverse impacts to the surface water
system resulting from changes in the quantity
and /or quality of storm water discharge; to
include habitat both within and along such
drainage systems.
2.4 PERMIT AUTHORITY
The Director of the Public Works Department for the
City of Tukwila is the responsible Administrative
Officer of this Ordinance and his /her authority
includes the establishment of Regulations and
Procedures to carry out the intent of this Ordinance.
2.5 APPLICATION FOR PERMIT
The application for a Storm Drainage Permit shall be
.submitted on the standard Utility Permit Application
Form provided by the Public Works Department. The
Application may also include the following:
A. Vicinity Map.
B. Site Plan.
C. Storm Drainage Plan.
D. Maintenance Schedules and Agreements.
E. Work Schedule and Construction Cost Estimates for
each element in the required plans.
F. Hydrological Engineering Report.
G. Water Quality Analysis.
H. Environmental Checklist.
I. Performance Bond or other Security.
J. Supplemental Requirements /Conditions by the Public
Works Director or the Department of Community
Development.
2.6 DESCRIPTION OF APPLICATION ELEMENTS /REQUIREMENTS
A. VICINITY MAP - The vicinity map shall include the
following information:
1. Location of proposed storm drainage
activities in relation to the local drainage
basins as identified by the City of Tukwila
Comprehensive Storm Drainage Plan on file in
the Department of Public Works.
2. Location of all water courses and other
natural surface water system elements
downstream from the proposed storm drainage
activities.
3. Identification of upstream and downstream
drainage areas, including watershed
boundaries and predominant intra -basin flow
paths.
B. SITE PLAN - The following information shall be
included on the Site Plan for proposed storm
drainage activities:
1. Location and description of all watercourses,
impoundments, wetlands, and other surface
water features on or adjacent to the site
into which surface water flows.
2. Topography of the site for existing and
proposed contours, in two -foot intervals.
3. Delineation of 100 year floodplain, if
applicable.
4. Delineation of slopes.
5. Proposed improvements including location and
description of all existing and proposed
buildings or other structures, impervious
surfaces, and storm drainage facilities, if
applicable.
6. Location and identification of all existing
and proposed easements for the storm water
management facilities and easements to
provide adequate access for inspection and
maintenance from a public right -of -way,
depicted in relation to existing right -of -way
lines and property lines.
9
7. Location and identification of all existing
and proposed utilities.
C. STORM DRAINAGE PLAN - The applicant is responsible
for submitting a Storm Drainage Plan which meets
the design requirements of this Ordinance. The
applicant shall specify on the drawings submitted
with such Plan that all clearing, grading,
drainage, construction and development shall be
conducted in strict accordance with the Plan. In
addition, any or all of the following information
may be required for a Storm Drainage Plan:
1. Structural details for and graphic
representation of all proposed drainage
system components and storm water management
facilities, including hydraulic calculations
for all system components and notes on
drawings specifying materials to be used.
2. Soils analysis, including test borings, which
are necessary for construction of small ponds
and /or infiltration facilities.
3. Construction specifications for all proposed
storm water management facilities.
4. Delineation and description of all interim
storm water management facilities, including
erosion control, to be employed during
construction of the permanent storm drainage
system together with a schedule for the
maintenance of such interim measures.
5. Integration, where applicable, of-all storm
drainage facilities with the permanent
erosion control facilities required by the
Land - Altering Ordinance (No. 1591); provided
that such integration shall in no way
compromise the effectiveness of such
facilities.
D. MAINTENANCE SCHEDULE & AGREEMENTS -
1. Prior to receiving a Storm Drainage Permit,
the applicant shall provide a monitoring and
maintenance schedule for all permanent storm
drainage facilities that is binding on all
subsequent owners of the land directly served
by such facilities.
10
2. The monitoring and maintenance schedules
required herein shall be developed for the
life of each storm drainage facility and
shall state the maintenance to be completed,
the time period for completion, and who shall
perform the maintenance. The schedule shall
also be printed on the Storm Drainage Plan.
3. The monitoring and maintenance schedule shall
provide for access to the storm drainage
facilities by the Public Works Department and
shall be formalized as an agreement between
the property owner and the City. Such
agreement shall be affixed to the titles of
affected properties and recorded with the
King County Auditor's Office.
4. The owner of the property on which storm
water facilities are constructed pursuant to
this Ordinance shall be responsible for
maintaining such facilities. Failure to
maintain such facilities as prescribed in the
approved maintenance schedule may result in
the work being performed at the direction of
the Public Works Director and the costs of
such actions may be assessed as a lien
against the property on which such facilities
are located. This action shall be in
addition to any other enforcement provisions
provided in this Ordinance.
E. WORK SCHEDULE AND CONSTRUCTION COST ESTIMATES (for
each element in the required plans) - When
required, the applicant shall submit for approval
a work schedule and construction cost estimates
containing the following:
1. The work schedule shall identify the proposed
date(s) when storm drainage facilities will
be constructed and when they will be
completed. A schedule of proposed date(s)
for construction and completion of any
interim storm drainage facilities shall also
be provided.
2. Construction cost estimates for any required
storm water facilities indicated on the Storm
Drainage Plan shall be provided in sufficient
detail to allow the Public Works Director to
determine the appropriate dollar amounts for
11
required securities and /or insurance.
F. HYDROLOGICAL ENGINEERING REPORT - A hydrological
engineering report, when required, shall contain
all calculations required to determine the
suitability of the site for the proposed
development as well as the adequacy of all storm
water facilities to be constructed, to include:
1. Hydrology of the site including contributions
from upstream area as well as subsurface flow
patterns and volumes.
2. Hydraulic capacities and design dynamics for
all storm water facilities and maximum runoff
per design standards.
3. Capacities of the public systems downstream
from the proposed development following
construction.
4. Maximum water course velocities that can be
maintained without significant detriment to
the natural channels (e.g. scouring,
sedimentation, erosion, etc.).
5. The predicted path that storm water runoff
will take during storm events which exceed
system design capacities.
G. WATER QUALITY ANALYSIS - When required, the
applicant shall provide baseline data for storm
and surface water quality entering the site per
the parameters indicated in the storm water
standards. Such data shall be accompanied with
conclusions regarding the positive and negative
effects of the development on the water quality
downstream from the site as well as the predicted
effects of on -site water quality mitigation
improvements, to include biofiltration systems as
required per King County Surface Water Design
Manual. Documentation and test data supporting
all conclusions and recommendations as well as
notes delineating any hazardous substance storage
areas and proposed plans to protect water courses
from potential adverse impacts associated with
such storage shall also be provided.
H. ENVIRONMENTAL CHECKLIST - A Storm Drainage Permit
12
will not be issued prior to environmental review
and sign -off from the Department of Community
Development which indicates that said review has
been conducted and that the proposed storm
drainage activities are in accordance with
applicable City Codes which are administered by
the Department of Community Development. When
required, the Department of Community Development
shall affix to the environmental review documents
any conditions or mitigatory requirements which
must be met if the proposed storm drainage
activities are to be undertaken.
I. PERFORMANCE BOND OR OTHER SECURITY - The Public
Works Director may require from the applicant a
surety, cash bond, irrevocable letter of credit,
or other means of security acceptable to the City,
prior to the issuance of a Storm Drainage Permit.
Such securities shall be administered in
accordance with Section 5.2. The amount of the
security shall not be less than the total
estimated construction cost of all interim and
permanent storm water control facilities and shall
not be fully released without final inspection and
approval of completed work by the City and the
provision of "as- built" plans.
J. SUPPLEMENTAL REQUIREMENTS /CONDITIONS (By the
Public Works Director and /or the Department of
Community Development) -
1. General. The Public Works Director may
require supplemental studies, inspections,
and /or testing by an approved testing agency
at any stage of the application or project.
In addition, he /she may require other
conditions deemed necessary to prevent the
storm drainage activities from being
conducted in a manner hazardous to life or
property, or in a manner likely to create a
nuisance. All conditions must be identified
on the Storm Drainage Plan submitted for
approval.
2. Insurance. If, in the opinion of the public
Works Director, the nature of the work is
such that it may create a hazard to human
life or endanger adjoining property, property
at a higher elevation, property at a lower
elevation, any street improvements, or any
other public property, the Public Works
13
Director may require the applicant to file a
certificate of insurance. Certificates of
insurance shall be administered as prescribed
in Section 5.3; provided that the Public
Works Director may require insurance in
amounts exceeding that specified in Section
5.3 in order to provide adequate protection
from storm drainage activities possessing a
higher risk potential.
3. Special Conditions by The Department of
Community Development - In cases where the
proposed storm drainage activities may
present a threat to any water course or other
Sensitive Area or involve construction in the
protective buffer associated with such areas
as identified in the City of Tukwila
Sensitive Areas Ordinance, the City of
Tukwila Department of Community Development
may require additional conditions or
mitigation requirements deemed necessary to
fulfill the intent of the Sensitive Areas
Ordinance. Such additional measures shall be
identified on the Storm Drainage Plan and
approved by the Department of Community
Development prior to issuance of Storm
Drainage Permit.
2.7 ISSUANCE OF PERMITS
A. Permits are not transferable without the approval
of the Public Works Director.
B. In issuing a Storm Drainage Permit, the Public
Works Director may waive the requirement for any
or- all plans or specifications upon finding that
the information on the application is sufficient
to demonstrate that the proposed work will conform
to the requirements of this Ordinance, other laws
and ordinances, and the Comprehensive Storm Water
Management Plan; provided that a waiver of any
section of this Ordinance shall not be construed
as a waiver of any other requirements of this or
related regulations and the applicant shall remain
bound by all conditions of the application.
C. PERMIT PROCESSING /TIMING -
1. Within 40 days of receipt of an application
for a Storm Drainage Permit (including all
required accompanying information), the
Public Works Director shall review the
application to determine if the requirements
14
of this Ordinance are met. The Public Works
Director may request comments from other
departments or agencies.
2. If the requirements of this Ordinance are
met, the Public Works Director shall approve
the Storm Drainage Plan, inform the
applicant, and issue a permit.
3. If the requirements are not met, the Public
Works Director shall inform the applicant in
writing and may either require additional
information, or disapprove the plan. Within
21 days of the receipt of any re- submittal,
the Public Works Director shall again
determine if the Plan meets the requirements
of this Ordinance and shall either approve or
disapprove said re- submittal.
4. If the Plan is disapproved, the Public Works
Director shall inform the applicant in
writing of the reasons for disapproval.
5. Upon review and approval of all required
plans, the Public Works Director shall
approve the application, in writing, and
issue the permit upon payment of any
applicable fees and the provision of any
required financial assurances and /or
securities.
2.8 EXEMPTIONS
The following development activities are exempt from
the provisions of this Ordinance and the requirements
of providing storm water management; provided that they
do not occur in a Sensitive Area Overlay Zone as
defined in the City of Tukwila Sensitive Areas
Ordinance:
A. Agricultural land management practices which do
not drain to or disturb the existing surface water
system;
B. Additions or modifications to existing single
family detached residential structures;
C. Development sites which do not involve disturbing
over 6,000 square feet of land area;
D. Residential developments consisting of single
family houses each on a lot of two acres or
15
greater; or
E. Public Works maintenance and construction
projects; provided that such projects shall be
carried out in such a manner as to conform to all
requirements and intent of this Ordinance.
2.9 WAIVERS
A. The City may grant a waiver of the storm water
management requirements for individual
developments provided that a written request is
submitted by the applicant containing
descriptions, drawings, and any other information
that is necessary to evaluate the proposed
development. Accordance with the provisions of
this section if there are subsequent additions,
extensions, or modifications to a development
receiving a waiver. Eligibility for a waiver
shall be determined if the applicant can
conclusively demonstrate that:
1. The proposed development will not generate
2 -year discharge flows or velocities that
will discharge to and exceed maximum
permissible velocities of any portion of the
natural surface water system and will not
cause an adverse impact on the receiving
wetland, watercourse, or water body; or
2. A site is completely surrounded by existing,
developed areas which are served by an
existing network of public storm drainage
systems of adequate capacity to accommodate
the runoff from the additional development.
2.10 AMENDMENT
Application for amendment to a permit shall be in
written and /or graphic form and may be made at any time
through the same process as the original application.
Until such time as an amendment is approved by the
City, the storm drainage activity shall not proceed
except in accordance with the Storm Drainage Permit as
originally approved.
2.11 PERMIT FEE
A non - refundable permit fee will be collected at the
time the storm drainage plan or application for waiver
is submitted. The permit fee will provide for the cost
of: plan review; administration and management of the
16
permitting process; inspections; and, variance and
appeals processing pursuant to this Ordinance. A
permit fee schedule shall be established by Resolution
of City Council based on the relative complexities of
storm drainage projects, and may be amended from time
to time.
2.11 PERMIT ENFORCEMENT
If, through inspection or other means, it is determined
that a person engaged in a storm drainage activity has
failed to comply with approved Storm Drainage Plans
and /or other permit conditions, any or all enforcement
actions prescribed in this Ordinance may be initiated.
When permit violations are identified, a written notice
of violation shall be served upon that person by
registered or certified mail or other means. The
notice shall set forth the measures necessary to
achieve compliance with the plan, specify the time
period to commence and complete corrections, and
indicate the consequences for failure to correct the
violation.
A. Any Storm Drainage Permit issued by the City may
be suspended or revoked after written notice is
given to the permittee for any of the following
reasons:
1. Any violation(s) of the conditions of the
Storm Drainage Permit.
2. Changes in site runoff characteristics upon
which a permit or waiver was granted.
3. Construction not in accordance with the
approved plans.
4. Non - compliance with correction notice(s) or
stop work order(s) issued for the
construction of temporary or permanent storm
water management' facilities.
5. An immediate danger exists in a downstream
area or adjacent property as determined by
the Public Works Director.
B. In addition to the action under subsection (A),
the Public Works Director may post a site with a
"stop work" order directing that all storm
drainage activities cease immediately. The
issuance of a "stop work" order may include any
"discretionary conditions" or "standard
17
requirements" which must be fulfilled before work
under the Storm Drainage Permit may continue.
C. No person shall continue or permit the continuance
of work in an area covered by a stop work order,
except work required to correct an imminent safety
hazard as prescribed by the Public Works Director.
D. The cost of any corrective measures shall be borne
by the developer, owner or permittee applicant.
2.12 PERMIT DURATION
From the date of issuance, permits shall be valid for a
period of 180 days, or the length of the building
permit or other construction authorization, whichever
is longer, unless otherwise revoked. The Public Works
Director may extend the permit period one or more times
up to an additional 180 days. The Public Works
Director may also require additional control measures
as a condition of the extension if they are necessary
to meet the requirements of this Ordinance.
SECTION III. INSPECTION
3.1 INSPECTION ACCESS
Authorized representatives of the Public Works Director
may enter for the purpose of inspection and enforcement
of the provisions of this Ordinance, all properties
described in Storm Drainage Permit documentation.
3.2 INSPECTION SCHEDULE AND REPORTS
A. Prior to issuing a Storm Drainage Permit, the
applicant shall submit to the Public Works
Inspector for approval, a proposed inspection
schedule.
B. At the Public Works Director's option, "as- built"
certification by a registered professional
engineer licensed in the State of Washington shall
be required to certify that all facilities have
been constructed as shown on the "as- built" plans
and meets approved plans and specifications. "As-
Built" plans may also be required. When required,
these elements shall be submitted prior to permit
sign -off.
C. No work element on the approved inspection
schedule shall proceed until the City inspects and
approves the work previously completed and
furnishes the permittee with the results of such
18
inspection.
D. Upon completion of all required project elements,
the permittee shall request a final inspection by
contacting the Public Works Inspector. The permit
process is complete upon sign -off of the issued
permit(s) by the Public Works Director.
3.3 INSPECTION REQUIREMENTS DURING CONSTRUCTION
Regular inspections shall be made and logged at the
following intervals once storm drainage construction
activities have been initiated:
A. Prior to clearing, filling, or grading;
B. After storm events involving at least .5 inches of
precipitation;
C. Following installation of all temporary storm
drainage facilities;
D. Prior to and following installation of all
permanent storm water management facilities;
E. Prior to and following installation of water
quality control and flow attenuation devices;
F. During installation of all piping, catch basins,
inlet /outlet structures, concrete, and anti -seep
barriers /structures.
a
G. Following permanent re- vegetation of the site.
SECTION IV. SYSTEM /PROPERTY PROTECTION
4.1 DETERMINATION OF RISK /HAZARD
If the Public Works Director determines that a
significant risk of accelerated erosion, off -site
sedimentation, decreased water quality, or other
adverse impacts exists due to permitted storm drainage
activities he /she may require a revised Storm Drainage
Plan. Pending the preparation of the revised plan,
work shall cease or may continue under conditions
prescribed by the Public Works Director.
4.2 EMERGENCY ACTION
Whenever the Public Works Director determines that the
acts or intended acts represented in the Storm Drainage
Plan constitute a hazard to life and limb, or endanger
19
property, or adversely affect the safety, use or
stability of a public way, drainage channel, or
Sensitive Area or Buffer, the Public Works Director may
initiate all required actions to prevent or stop any
storm drainage activity. The developer or person
conducting or intending to conduct such activity, upon
notification by the Public Works Director shall, within
the period specified therein, terminate such
activities.
SECTION V. GENERAL ADMINISTRATIVE PROVISIONS
5.1 LIABILITY.
Liability for any adverse impacts or damages resulting
from work performed in accordance with any permit
issued on behalf of the City of Tukwila for the
development of any site within the City limits, shall
be the sole responsibility of the property owner.
5.2 SECURITIES.
For developments which may involve a risk of property
damages or possible hazards, the Public Works Director
may require the deposit of a financial security (bond,
note, letter of credit, etc.) with the City to mitigate-
damages should they occur. The following provisions
shall apply in instances where such securities are
required:
A. Securities shall not exceed the estimated cost of
constructing and maintaining those improvements
which are the source of the risk or potential
hazard, provided that, in the case of —storm
drainage activities which do not involve
expenditures at least equal to the cost of
remedying the possible adverse impacts of such
activities, the required security shall be equal
to City Staff's best estimate of the possible
costs directly associated with remedying the
adverse impacts to public or private properties
not associated with the development.
B. The amount of any security shall not serve as a
gauge or limit to the compensation collected from
a property owner as a result of damages associated
with any storm drainage activity.
C. Securities shall be retained until the completion
of any project involving storm drainage activity
20
or following a prescribed trial maintenance
period.
D. Securities and /or financial assurances provided in
accordance with this Ordinance may be redeemed in
whole or in part by the City of Tukwila upon
determination by the Public Works Director that
any or all of the following circumstances exist:
1. Failure on the part of the party providing
such assurances to fully comply, within the
time specified, with approved plans and /or
any corrective or enforcement actions
mandated by this Ordinance; or,
2. Damages to public or property arising from
the activities for which the assurance or
security was required.
5.3 INSURANCE.
If, in the opinion of the Public works Director, the
risks to property or life and limb associated with a
proposed development activity are substantial, said
official may require the property owner to purchase
liability insurance coverage in the following minimum
amounts:
A. Bodily injury liability - $1 million per
occurrence.
B. Property damage liability - $1 million per
occurrence.
The Public Works Director may require higher policy
limits than stipulated above in those cases where the
minimum amounts are deemed insuf -f- icient to cover
possible risks. All insurance policies obtained in
accordance with these provisions shall name the City of
Tukwila as an "additional insured" and shall be written
by a company licensed to do business in the State of
Washington. Neither issuance of a permit, nor
compliance with these provisions or any other
conditions imposed by the City relieves any person from
any responsibility for damage to persons or property
otherwise imposed by law; damages in an amount greater
than the insured amount; nor, imposes any liability
upon the City for damages to persons or property
arising from activities permitted by the City or
otherwise undertaken by any person.
21
5.4 VARIANCES
The City may grant a written variance from any
requirements of this Ordinance if there are exceptional
circumstances applicable to the site such that strict
adherence to the provisions contained herein will
result in unnecessary hardship and not fulfill the
intent of this Ordinance. A written request stating
the specific variances sought and the reasons
supporting the approval of such variances shall be
provided to the Public Works Director. The Public
Works Director shall then provide a recommendation to
the City Council and the Council shall make the final
determination. The City shall not grant a variance
unless and until sufficient reasons justifying the
variance are provided.
5.5 PERMITS
The application for and issuance of permits as
prescribed in this Ordinance shall constitute the
administrative mechanism for the enforcement of the
provisions contained herein. Such permits shall be
non - transferrable absent approval of the Public Works
Director and limited in scope to the specific
activities for which they are granted.
5.6 PENALTIES
The following penalties shall be applied in whole or in
part for the violation of permit conditions contained
in this Ordinance or the failure to obtain permits
required for activities regulated by this Ordinance.
All remedies shall be considered cumulative and in
addition to any other lawful action. Each day that a
violation of this Ordinance is committed or permitted
to continue constitutes a separate offense to which
both the civil and criminal penalties set forth below
shall apply.
A. CIVIL PENALTIES
1. The violation of or failure to comply with
any of any lawful order or requirement of the
permit made in accordance with the provisions
of this Ordinance is a civil violation. The
provisions of T.M.C. Chapter 8.22 shall be
used to enforce this chapter in addition to
any other procedures authorized by the T.M.C.
2. It shall not be a defense to the prosecution
for failure to obtain a permit required for
this Ordinance, that a contractor,
subcontractor, person with responsibility on
22
the site, or person authorizing or directing
the work, erroneously believed a permit had
been issued to the property owner or any
other person.
CRIMINAL PENALTIES.
Any person who knowingly or willfully violates any
provision of this Ordinance, or any rule or other
adopted or issued regulations pursuant to this
Ordinance, or who knowingly or willfully initiates
or continues any activity for which a permit is
required, except in accordance with the terms,
conditions, and provisions of an approved plan,
shall be guilty of a misdemeanor punishable by
imprisonment not to exceed 90 days or by a fine
not to exceed $5,000, or both, at the discretion
of the court.
5.7 ABATEMENT .
Any structures, work, facilities, excavations, fills or
other activities which are constructed, reconstructed,
operated, or ,performed in violation of this Ordinance
or any lawful order or requirement of the Public Works
Director pursuant to this Ordinance, shall be deemed to
be a public nuisance and may be abated in the manner
provided by T.M.C. Chapter 8.28.
5.8 INJUNCTIVE RELIEF.
A. Whenever the governing body has reasonable cause
to believe that any person is violating or
threatening to violate this Ordinance or any rule
or other provisions adopted or issued pursuant to
this Ordinance, it may either before or after the
institution of any other action or proceeding
authorized by this Ordinance, institute a civil
action in the name of the City for injunctive
relief to restrain the violation or threatened
violation. Such action shall be brought in King
County Superior Court.
B. The institution of an action for injunctive relief
under this section shall not relieve any party to
such proceedings from any civil or criminal
penalty prescribed for violations of this
Ordinance.
5.9 APPEALS.
A. APPEALS TO DIRECTOR - Any person aggrieved by the
23
action of any Public Works Staff designated to
enforce or administer any provision of this
Ordinance may appeal such action to the Director
of the Department of Public Works for the City of
Tukwila. Such appeals may be in person or in
writing and shall be made within fourteen (14)
days from the date that the action subject to
appeal was initiated. No appeals to City Council,
as described below, shall be heard without prior
determination on the subject of such appeal by the
Director of the Department of Public Works of the
City of Tukwila.
B. APPEALS TO COUNCIL - Any person aggrieved by the
action of the Director of Public Works, as a
result of the disapproval of a properly filed
application for a permit variance, a written
notice of violation, an alleged failure to
properly enforce the Ordinance in regard to a
specific application, or the denial of an appeal
to the Director of Public Works, may appeal that
decision to the City Council. That appeal shall
be made in writing to the City Clerk within ten
(10) days of the Director of Public Works'
decision and shall state the reasons for the
appeal. The City Council shall affirm, deny, or
modify the decision of the Director of Public
Works within ninety days of the filing of the
appeal. Prior to making its decision, the City
Council may hold a public hearing. Appeals of
decisions made by the Building Official in
reference to the application of this Ordinance
shall be made in accordance with Section 204 of
the U.B.C.
SECTION VI. SEVERABILITY
If any portion of this Ordinance, as now or hereafter amended,
its application to any person or circumstances is held invalid or
unconstitutional, such adjudication shall not affect the validity
of the Ordinance as a whole, or any section, provision, or part
thereof not adjudicated to be invalid or unconstitutional and its
application to other persons or circumstances shall not be
affected.
SECTION VII. EFFECTIVE DATE
This Ordinance shall take effect five (15) days from the date of
publication of the attached summary which is hereby approved.
24
TO:
FROM:
DATE:
SUBJECT:
Jack
Denni
October 28, 1991
Environmental Determination for the proposed
Stormwater Management Ordinance
I have concluded there are no potential environmental impacts
associated with the proposed ordinance and have attached a draft
DNS. However, there are several substantive and grammatical
changes which should be considered. Also, language included in
portions of the ordinance should be consistent with SAO.
None of the comments I've received are environmentally related. I
would recommend a meeting held with Doug, Ross and Gary to address
the content of the proposed ordinance and ask that you forward on
the DNS to Rick for his signature.
Thank you.
sc) tvL91 ff\ Dc-c1,ftai ci\& 12)-
coM'rke%,9.. i /'n wc)..u&, SwMO
•
CITY OF TUKWILA
6200 SOUTHCENTER BOULEVARD, TUKWILA, WASHINGTON 98188
•
FIN( RII/FR
JUN. 0 71991
CITY Ut= I UKvviLA
PLANNING DEPT.
June 7, 1991
FR: Doug Micheau
TO: Jack Pace
RE: SEPA Checklist for Storm Water Management Ordinance.
PHONE # (206) 433 -1800 Gary L. VanDusen. Manor
M E M O R A N D U M
Enclosed for your review and processing are the SEPA checklist
for the. Draft Storm Water Management Ordinance (SWMO) and a copy
of the ordinance.
The Ordinance is intended to supplement the LAO and SAO through
the regulation of storm water runoff quantity and quality. As
with the LAO, it also adopts the King County Surface Water Design
Manual as the applicable design standards for addressing issues
related to the storm water impacts associated with development.
The SWMO also includes a provision to formally adopt the
Comprehensive Storm Water Plan, however, this Plan should be
regarded as a separate issue addressed via an independent SEPA
checklist. If this is not possible, we would like the
opportunity to remove this provision from the text.
If you have any questions regarding the checklist or the draft
ordinance please let me know. As always, your cooperation and
assistance in this matter is greatly appreciated.
encl: Checklist
Draft SWMO
xc: Phil Fraser
Infrastructure Files
%1TY OF TUKWILA
ENVIRONMENTAL REVIEW
ROUTIMG FORM is
7EPARTMENT OF COMMUNITY DEVELOPMENT
Building' 0 Planning Q, Pub Wks .: .
PROJECT
ADDRESS
EPIC:
Fire D Police DParks /R c
024 a N
DATE TRANSMITTED ) ) E,: 19 Ci
STAFF COORDINATOR .j N
RESPONSE REQUESTED BY
DATE RESPONSE RECEIVED
e attached environmental checklist was received regarding this project.' Please review and
comment below to advise the responsible officiat regarding the threshold-determination.; The
environmental .review: file Is available in the Planning Department through the above staff
oordinator,:',Cornments regarding the project you wish carried to the Planning Commission,.-
Board of Adjustment and City Council should be submitted in the comment section .below..
ITEM
COMMENT
JUL 01 1991
rvhvviLk
PLANNING DEPT.
Date:
7/
Comments prepared by:
Val Ell
;•-• ENVIRONMENTAL REVIEW
ROUTING FORM
CITY OF TUKWILA
DEPARTMENT OF COMMUNITY DEVELOPMENT
ADDRESS
DATE TRANSMITTED ) •L._ IN)
STAFF COORDINATOR t■It r
RESPONSE REQUESTED BY
) ;cot
DATE RESPONSE RECEIVED
..The*.sitached environmental checklist was received regarding this.project;':Please review and
comment below to.advise the responsible official regarding the threshold determination. •.; the'
:,.. environmental review file is available in the Planning Departnient thriitigh the abOVe.'staffL.-.:.
.
coordinator.. Comments regarding.theprOject you wish carried 10 the planning*Q6mmissiOrt;
• Board of Adjustment and City Council should be submitted in the comment section beloW! . •
ITEM
COMMENT
Date:
Comments prepared by: ,
itawmAd.;
it
09141B
CITY OF TUKWILA
7EPARTMENT OF COMMUNITY DEVELOPMENT
ENVIRONMENTAL REVIEW
ROUTING FORM
orgrarq
PROJECT
ADDRESS
oz-M V V Me— M A N A \ \NCB
DATE TRANSMITTED )*°0 N C1 ) RESPONSE REQUESTED BY ) v L`( i cjci
STAFF COORDINATOR D:», N DATE RESPONSE RECEIVED
• .. •
e attached environmental checklist. was *received regarding this project: Please review and
comment below to advise the responsible official regarding, the threshold determination ; The
environmental revlew file: is available in the Planning Department through: the above staff
• coordinator. Comments regarding the project you wish carried to the Planning:Commisslon, .'
Board of Adjustment and. City Council should be submitted in the comment section below.
ITEM
COMMENT
4
Date: �a y/ Comments prepared by: ,
osr ue+
• •
Control No.
Epic File No. -- ��— ]
Fee $250.00 Receipt No.
ENVIRONMENTAL CHECKLIST
A. BACKGROUND
1. Name of proposed project, if applicable:
City of Tukwila Storm Water Management Ordinance
2. Name of applicant: City of Tukwila
3. Address and phone number of applicant and contact person:
6300 Southcenter Blvd., Suite 101, Tukwila, WA 98188; 433 -0179;
Ross Earnst, Phil Fraser, Doug Micheau
4. Date checklist prepared: 5/9/91
5. Agency requesting checklist: City of Tukwila
6. Proposed timing or schedule (including phasing, if applicable):
Adoption of this Ordinance is anticipated in mid 1991.
7. Do you have any plans for future additions, expansion, or further activity
related to or connected with this proposal? If yes, explain.
Yes, the Comprehensive Storm Water Management Plan which is being adopted
through this Ordinance will be updated periodically in the future.
8. List any environmental information you know about that has been prepared,
or will be prepared, directly related to this proposal.
A SEPA checklist was prepared in 1989 for the City of Tukwila's
Comprehensive Storm Water Management Plan. A Determination of
Nonsignificance was issued for the checklist (EPIC- 15 -89).
9. Do you know whether applications \are pending for governmental approvals of
other proposals directly affecting the property covered by your proposal?
If yes, explain.
It is likely that applications by private developers are pending approval
for the City of Tukwila which is the site for the proposal; however, the
extent of such actions are not known.
10. List any government approvals or permits that will be needed for your
proposal.
Adoption by Tukwila City Council.
11. Give brief, complete description of your proposal, including the proposed
uses and the size of the project and site. There are several questions
later in this checklist that ask you to describe certain aspects of your
proposal. You do not need to repeat those answers on this page. Section
E requires a complete description of the objectives and alternates of your
proposal and should not be summarized here.
The proposal is an Ordinance of the City of Tukwila regulating all storm
water impacts associated with development on private property within the
City limits of Tukwila and adopting Tukwila's Comprehensive Storm Water
Management Plan.
12. Location of the proposal. Give sufficient information for a person to
understand the precise location of your proposed project, including a
street address, if any, and section, township, and range, if known. If a
proposal would occur over a range of area, provide the range or boundaries
of the site(s). Provide a legal description, site plan, vicinity map, and
topographic map, if reasonably available. while you should submit any
plans required by the agency; you are not required to duplicate maps or
detailed plans submitted with any permit applications related to this
checklist.
The Ordinance will be applied citywide.
13. Does the proposal lie within an area designated on the City's
Comprehensive Land Use Policy Plan Map as environmentally sensitive?
These regulations apply citywide, to include all sensitive areas, and all
drainage systems which may affect such sensitive areas. In cases where
development involves sensitive areas, the SWMO specifically refers an
applicant to the additional requirements to be imposed on such areas by
Tukwila's Dept. of Community Development through the proposed City of
Tukwila Sensitive Areas Ordinance (SAO).
TO BE COMPLETED BY APPLICANT Evaluation for
ACy Use Only .
B. ENVIRONMENTAL ELEMENTS
1. Earth
a. General description of the site (circle one):
Flat, rolling, hilly, steep slopes, mountainous,
other
Terrain varies from flat to hilly with some steep
slopes within the City.
b. What is the steepest slope on the site
(approximate percent slope)?
200%
c. What general types of soils are found on the site
(for example, clay, sand, gravel, peat, muck)?
If you know the classification of agricultural
soils, specify them and note any prime farmland.
Soils vary among specific sites but are
predominantly of the woodinville series.
d. Are there surface indications or history of
unstable soils in the immediate vicinity? If so,
describe.
Yes, there are several specific locations in the
City where landslides have occurred in the past.
e. Describe the purpose, type, and approximate
quantities of any filling or grading proposed.
Indicate source of fill.
There is no filling or grading directly related
to the regulatory requirements of the SWMO.
f. Could erosion occur as a result of clearing,
construction,or use? If so, generally describe.
The SWMO contains specific regulations to
mitigate the adverse impacts of erosion Through
control of storm water runoff from development.
About what percent of the site will be covered
with impervious surfaces after project
construction (for example, asphalt or buildings)?
Not applicable.
g-
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h. Proposed measures to reduce or control erosion, or
other impacts to the earth, if any:
Regulations in the SWMO will assist in erosion
control through implementation of storm water
quantity /quality control measures as specified in
the King County Surface Water Design Manual.
2. Air
a. What types of emissions to the air would result
from the proposal (i.e., dust, automobile odors,
industrial wood smoke) during construction and
when the project is completed? If any, generally
describe and give approximate quantities if
known.
Not applicable.
b. Are there any off -site sources of emissions or
odor that may affect your proposal? If so,
generally describe.
No
c. Proposed measures to reduce or control emissions
or other impacts to air, if any:
Not applicable.
3. Water
a. Surface:
1) Is there any surface water body on or in the
immediate vicinity of the site (including
your -round and seasonal streams, saltwater,
lakes, ponds, wetlands)? If yes, describe
type and provide names. If appropriate,
state what stream or river it flows into.
The City " of Tukwila contains the
Green / Duwamish River; Foster, Gilliam, and
Southgate Creeks; Tukwila Pond; numerous
wetlands of varying classes and sizes; and,
numerous smaller un -named natural surface
water channels and creeks. All of these
surface water elements flow to the
Green /Duwamish River.
Evaluation for •
1,Ge=y Use only .
2
3
Will the project require any work over, in,
or adjacent to (within 200 feet) the
described waters? If yes, please describe
and attach available plans.
No, however, the SWMO will regulate
development adjacent to the described
waters in order to preserve their
hydrology. In addition, development is
subject to the requirements of the City's
Flood Control Zone Permit Ordinance
(FCZPO).
Estimate the amount of fill and dredge
material that would be placed in or removed
from surface water or wetlands and indicate
the area of the site that would be
affected. Indicate the source of fill
material.
The SWMO allows such activity only as
allowed in the proposed City of Tukwila
SAO.
4) Will the proposal require surface water
withdrawals or diversions? Give general
description, purpose, and approximate
quantities, if known.
Yes, the Ordinance will require surface
water diversions to the extent that storm
water runoff flows will be regulated and
controlled in order to prevent adverse
impacts to receiving surface waters.
5) Does the proposal lie within a 100 -year
floodplain? If so, note location on the
site plan.
6
To the extent that the SWMO regulates all
development in the City of Tukwila, it is
very likely that development will occur
within the 100 year flood plain. Such
development will be subject to the
regulations of the SWMO as well as the
FCZPO.
Does the proposal involve any discharges of
waste materials to surface waters? If so,
describe the type of waste and anticipated
volume of discharge.
This Ordinance includes provisions to
regulate and prohibit the discharge of
substances detrimental to the water quality
of receiving surface waters.
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Evaluation for
Agency Use Qtly
b. Ground:
1) Will ground water be withdrawn, or will
water be discharged to ground water? Give
general description, purpose, and
approximate quantities, if known.
It is possible that developer requirements
imposed by the SWMO could entail on -site
retention of storm water runoff where
established conveyance systems do not
exist. The quantity of water which will be
discharged to the ground through
infiltration from retention basins cannot
be estimated.
2) Describe waste materials that will be
discharged into the ground from septic
tanks or other sources, if any (for
example: Domestic sewage; industrial,
containing the following chemicals...;
agricultural; etc.) Describe the general
size of the system, the number of such
systems, the number of houses to be served
(if applicable), or the number of animals
or humans the system(s) are expected to
serve.
None.
c. Water Runoff (including storm water):
1)
Describe the source of runoff (including
storm water) and method of collection and
disposal, if any (include quantities, if
known). Where will this water flow? Will
this water flow into other waters? If so,
describe.
Pipes, ditches, swales and natural water
courses will all be utilized as required
design components to convey surface water
to the Green River in accordance with the
provisions of the SWMO. The manner,
extent, and quality of such runoff is the
subject of regulation under this Ordinance.
Evaluation for
Agency Use Cnly
2
Could waste materials enter ground or
surface waters? If so, generally describe.
This Ordinance will require that the water
quality of storm water runoff leaving a
development, either be enhanced where it is
currently below standards and /or maintained
where it is currently acceptable, prior to
discharge to any receiving surface water
system.
d. Proposed measures to reduce or control surface,
ground, and runoff water impacts, if any:
The City has adopted a land - altering ordinance
and a flood control zone permit ordinance to work
in conjunction with this proposed ordinance in
order to establish the standards and enforcement
mechanisms needed to prevent any impacts to the
surface water system. The potential for ground
water contamination is limited to only those
cases where infiltration is proposed. The
effects in this case would be negligible in that
most of the City has established conveyance
systems and proposed development would be
required to tie into such systems.
4. Plants
a. Check or circle types of vegetation found on the
site:
x deciduous tree: alder, maple, aspen, other
x evergreen tree: fir, cedar, pine, other
x shrubs
x grass
pasture
crop or grain
x wet soil plants: cattail, buttercup, bulrush,
skunk cabbage, other (some)
x water plants: water lily, eel grass, milfoil,
other
other types of vegetation
b. What kind and amount of vegetation will be
removed or altered?
The SWMO does not address the removal of
vegetation, however it may require the
installation of vegetation to provide
biofiltration and /or stream channel
stabilization.
c. List threatened or endangered species known to be
on or near the site.
None known.
-8-
Evaluation for
Agemy Use Only
Evaluation for
Agerny Use Cnly
d. Proposed landscaping, use of native plants, or
other measures to preserve or enhance vegetation
on the site, if any:
This Ordinance is intended to work in conjunction
with the proposed SAO to preserve and enhance
native vegetated areas as beneficial attributes
to surface water systems and other sensitive
areas. The SWMO also requires restoration of
vegetation when applicable to achieve improved
surface water quality.
5. Animals
a. Circle any birds of animals which have been
observed on or near the site or are known to be
on or near the site:
birds: hawk, heron, songbirds, migratory water
fowl
mammals: beavers, raccoons, squirrels, small
rodents
fish: trout, perhaps some freshwater mussels in
watercourses, and some species of salmon.
b. List any threatened or endangered species known to
be on or near the site.
None known.
c. Is the site part of a migration route? If so,
explain.
Yes. Waterfowl utilize wetlands and the Green
River in the City as part of their migratory
path. Also, fish migrate through the City up the
Green River.
d. Proposed measures to preserve or enhance
wildlife, if any:
To the extent that the SWMO is intended to work
in conjunction with the proposed SAO, and to the
extent that it preserves water quality necessary
to support aquatic life, the SWMO can be
considered a document which requires measures
which facilitate preservation of wildlife.
6. Energy and Natural Resources
a.
What kinds of energy
wood stove, solar)
completed project's
whether it will
manufacturing, etc.
Not applicable.
(electric, natural
will be used to
energy needs?
be used for
b. Would your project affect
solar energy by adjacent
generally describe.
c.
No
gas, oil,
meet the
Describe
heating,
the potential use of
properties? If so,
What kinds of energy conservation features are
included in the plans of this proposal? List
other proposed measures to reduce or control
energy impacts, if any:
Not applicable.
7. Environmental Health
a.
Are there any environmental health hazards,
including exposure to toxic chemicals, risk of
fire and explosion, spill, or hazardous waste,
that could occur as a result of this proposal? If
so, describe.
No.
1) Describe special emergency services that
might be required..
None.
2) Proposed measures to reduce or control
environmental health hazards, if any:
Not applicable to this Ordinance.
Evaluation for
Aory Use Only
Evaluation for
Age y Use Chly
b. Noise
1) What types of noise exist in the area which
may affect your project (for example:
traffic, equipment, operation, other)?
Not applicable.
2) What types and levels of noise would be
created by or associated with the project
on a short-term or long -term basis (for
example: traffic, construction, operation,
other)? Indicate what hours noise' would
come from the site.
None.
3) Proposed measures to reduce or control
noise impacts, if any:
Not applicable.
8. Land and Shoreline Use
a. What is the current use of the site and adjacent
properties?
The City contains land -use categories ranging
from open space to commercial /industrial.
Adjacent uses exhibit a similar range of
characteristics.
b. Has the site been used for agriculture? If so,
describe.
No, not within the past decade.
c. Describe any structures on the site.
The City of Tukwila varies considerably from bare
— natural land to several story office complexes.
d. Will any structures be demolished? If so, what?
e.
No, however, the demolition of a structure in the
City will be subject to review with respect to
the surface water system and the requirements of
the SWMO may be applied.
What is the current zoning classification of the
site?
Varies throughout the City.
f. What is the current comprehensive plan
designation of the site?
g-
Varies throughout the City.
If applicable, what is the current shoreline
master program designation of the site?
Varies throughout the City.
h. Has any part of the site been classified as an
"environmentally sensitive" area? If so, specify.
Yes, many areas of the City have and /or will be
designated sensitive areas and will be regulated
with stringent standards to protect them as
specified in the proposed SAO.
i. Approximately how many people would reside or
work in the completed project?
j
None.
Approximately how many people would the completed
project displace?
None.
k. Proposed measures to avoid or reduce displacement
impacts, if any:
Not applicable.
1. Proposed measures to ensure the proposal is
compatible with existing and projected land uses
and plans, if any:
The SWMO drafts will be forwarded to the Planning
Staff of the Tukwila Department of Community
Development (DCD) for input and comments. Once
adopted, the SWMO will be administered through
the established development review process which
requires verification by DCD that a development
proposal is consistent with the Comprehensive
Land Use Plan for Tukwila as well as any
applicable City Codes.
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Evaluation for
Agcy Use Cnly
Evaluation for
2 y Use Cnly
9. Housing
a. Approximately how. many units would be provided,
if any? Indicate whether high, middle, or low -
income housing?
None
b. Approximately how many units, if any, would be
eliminated? Indicate whether high, middle, or
low- income housing.
None
c. Proposed measures to reduce or control housing
impacts, if any:
Not applicable
10.Aesthetics
a. What is the tallest height of any proposed
structure(s), not including antennas; what is the
principal exterior building material(s) proposed?
This Ordinance will address all development in
the City of Tukwila and building
heights /materials are likely to vary considerably
across developments.
b. What views in the immediate vicinity would be
altered or obstructed?
The SWMO does not address structure heights.
c. Proposed measures to reduce or control aesthetic
impacts, if any:
One objective of the SWMO is to preserve existing
surface water channels which are considered
aesthetic features by City policy makers.
Evaluation
for Agency
Use Only
11.Light and Glare
a. What type of light or glare will the proposal
produce? What time of day would it mainly occur?
None, Not applicable.
b. Could light or glare from the finished project be
a safety hazard or interfere with views?
No.
c. What existing off -site sources of light or glare
may affect your proposal?
None.
d. Proposed measures to reduce or control light and
glare impacts, if any:
Not applicable.
12.Recreation
a. What designed and informal recreational
opportunities are in the immediate vicinity?
There are several formal and informal recreation
areas along the Green River for: access,
running, cycling, walking, and fishing. There
are also numerous parks, playgrounds, and
athletic facilities in the City.
b. Would the proposed project displace any existing
recreational uses? If so, describe.
No.
c. Proposed measures to reduce or control impacts on
recreation, including recreation opportunities to
be provided by the project or applicant, if any:
None.
Evaluation
for Agency
Use Only
13.Historic and Cultural Preservation
a. Are there any places or objects listed on, or
proposed for, national, state, or local
preservation registers known to be on or next to
the site? If so, generally describe.
None known.
b. Generally describe any landmarks or evidence of
historic, archaeological, scientific, or cultural
importance known to be on or next to the site.
None known.
c. Proposed measures to reduce or control impacts,
if any:
Not applicable.
14.Transportation
a. Identify public streets and highways serving the
site, and describe proposed access to the
existing street system. Show on site plans, if
any.
The City contains two major interstates; five
state routes; several major arterials and
numerous smaller roads and streets.
b. Is the site currently served by public transit?
If not, what is the approximate distance to the
nearest transit stop?
Yes, varies considerably.
c. How many parking spaces would the completed
project have? How many would the project
eliminate?
Not applicable.
Evaluation
for Agency
Use Only
d. Will the proposal require any new roads or
streets, or improvements to existing roads or
streets, not including driveways? If so,
generally describe (indicate whether public or
private).
e.
No.
Will the project use (or occur in the immediate
vicinity of) water, rail, or air transportation?
If so, generally describe.
The proposal area (city limits) contains many
railroad lines and borders the edge of one
airport.
f. How many vehicular trips per day would be
generated by the completed project? If known,
indicate when peak volumes would occur.
Not applicable.
g. Proposed measures to reduce or control
transportation impacts, if any:
Not applicable.
15.Public Services
a. Would the project result in an increased need for
public services (for example: fire protection,
police protection, health care, schools, other)?
If so, generally describe.
Yes, any infrastructure built in the City's
rights -of -way will be maintained thereafter by
City maintenance crews.
b. Proposed measures to reduce or control direct
impacts on-public services, if any.
Many high maintenance /problem areas will undergo
improvements through this Ordinance, thus
offsetting the increase in maintenance required
by additional facilities.
16.Utilities
a. Circle utilities currently available at the site:
electricity, natural gas, water, refuse service,
telephone, sanitary sewer, septic system, other.
Generally all utilities are available in the
affected geographic area.
b. Describe the utilities that are proposed for the
project, the utility providing the service, and
the general construction activities on the site
or in the immediate vicinity which might be
needed.
Any improvements constructed in the City's
rights -of -way per the requirements of this
Ordinance, will become part of the City's Storm
and Surface Water Utility.
C. Signature
The above answers are true and complete to the best of
my knowledge. I understand that the lead agency is
relying on them t make ts.- decision.
Signature:
Date Submitted:
c /31cl/
PLEASE CONTINUE TO THE NEXT PAGE.
TO BE COMPLETED BY APPLICANT
Evaluation for
Agency Use
Only
D. SUPPLEMENTAL SHEET FOR NON- PROJECT ACTIONS
(do not use this sheet for project actions)
Because these questions are very general, it may be helpful to
read them in conjunction with the list of the elements of the
environment.
When answering these questions, be aware of the extent the
proposal, or the types of activities likely to result from the
proposal, would affect the item at a greater intensity or at
a faster rate than if the proposal were not implemented.
Respond briefly and in general terms.
1. How would the proposal be likely to increase discharge
to water; emissions to air; production, storage,or
release of toxic or hazardous substances; or production
of noise?
This Ordinance is intended to prevent development-
related increases in the discharge of storm water to the
existing surface water systems and maintain (when
already acceptable) or enhance (when less than
acceptable) the duality of such discharge.
Proposed measures to avoid or reduce such increases are:
Use of storm water collection, detention, and retention
facilities as well as mechanical and /or biofiltration
runoff purification devices, will be required by this
Ordinance to avoid or reduce adverse impacts of
discharge to surface waters.
2. How would the proposal be likely to affect plants,
animals, fish, or marine life?
This proposal will mitigate adverse impacts to the
surface water system through regulation of storm water
runoff quantity and quality. In this regard, the
proposal will have a positive affect on plants and
aquatic life.
Proposed measures to protect or conserve plants,
animals, fish, or marine life are:
The SWMO will require developers to install storm water
control measures to include: pipes, detention /retention
structures, biofiltration swales, mechanical water
purification systems, and other such devices as may be
appropriately required through the application of the
standards prescribed in the King County Surface Water
Design Manual.
-18-
3. How would the proposal be likely to deplete energy or
natural resources?
This proposal facilitates preservation of surface water
natural resources through regulations imposed on
development. There is no depletion of such resources
directly associated with the SWMO.
Proposed measures to protect or conserve energy and
natural resources are:
Prohibitions of activities generating detrimental stream
flows or water quality impacts.
4. How would the proposal be likely to use or affect
environmentally sensitive areas or areas designated (or
eligible or under study) for governmental protection;
such as parks, wilderness,wild and scenic rivers,
threatened or endangered species habitat, historic or
cultural sites, wetlands, floodplains, or prime
farmlands?
This Ordinance is intended to supplement the proposed
Tukwila SAO and in doing so will only enhance the goals
of sensitive area protection prescribed in that
document.
Proposed measures to protect such resources or to avoid
or reduce impacts are:
As stewards of these resources the City of Tukwila
promotes and observes policies developed specifically to
preserve and protect these resources. The City also
solicits public input on improvement proposals and
enlists the cooperation of state and federal regulatory
agencies at the design stages. In addition, development
in the City will be subject to the requirements of the
Land Altering; Sensitive Areas; and Storm Water
Management Ordinance.
5. How would the proposal be likely to affect land and
shoreline use, including whether it would allow or
encourage land or shoreline uses incompatible with
existing plans?
This Ordinance requires review by the Tukwila Department
of Community Development for consistency with the City's
Comprehensive Land -Use Plan and Shoreline Management
Plan.
Evaluation
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Use Only
Evaluation
for Agency
Use Only
Proposed measures to avoid or reduce shoreline and land
use impacts are
Detailed review of development proposals prior to
granting permits for any activity and the application of
the SEPA process, SAO, LAO, Zoning Code, and other
applicable City of Tukwila Regulations.
How does the proposal conform to the Tukwila Shoreline
Master Plan?
This proposal does not present any conflicts with the
existing Shoreline Master Plan for Tukwila.
6. How would the proposal be likely to increase demands on
transportation or public services and utilities?
The proposal will increase demands on public services in
that it will require City staff to administer it and
maintenance effort for any infrastructure that a
developer is required to construct in City rights-of-
way.
Proposed measures to reduce or respond to such demand(s)
are:
The administration of the proposal can currently be
addressed with existing staff and the maintenance effort
will be compensated somewhat through the'removal of high
maintenance problem areas as new infrastructure is
installed by developers.
Identify, if possible, whether the proposal may conflict
with local, state, or federal laws or requirements for
the protection of the environment.
This proposal will not conflict with laws at any level.
If conflicts should arise regarding a specific project,
the Ordinance contains provisions which state that the
most stringent regulations shall supersede.
Evaluation for
Use Only
8. Does the proposal conflict with policies of the Tukwila
Comprehensive Land Use Policy Plan? If so, what policies
of the Plan?
No.
Proposed measures to avoid or reduce the conflict(s)
are:
Internal review of preliminary design proposals by City
officials responsible for administering the
Comprehensive Land Use Plan.
TO BE COMPLETED BY APPLICANT
E. SUPPLEMENTAL SHEET FOR ALL PROJECT AND NON PROJECT
PROPOSALS
The objectives and the alternative means of reaching the
objectives for a proposal will be helpful in reviewing the
foregoing items of the Environmental Checklist. This
information provides a general overall perspective of the
proposed action in the context of the environmental
information provided and the submitted plans, documents,
supportive information, studies, etc.
1. What are the objectives of the proposal?
Protect public and private property; public storm water
systems; and, the natural surface water systems in the
City of Tukwila, from the adverse impacts stemming from
storm water runoff associated with development.
2. What are the alternative means of accomplishing these
objectives?
Rely on other regulatory agencies to monitor the adverse
impacts of development.
3. Please compare the alternative means and indicate the
preferred course of action:
The high level of development and the level of attention
to detail that must be exercised in order to monitor
such development precludes effectiveness at any
regulatory level other than the municipal level. At the
municipal level the knowledge of the geography and
natural features of the City are much greater as is the
awareness of the current needs and limitations of
infrastructure systems.
Evaluation for
Agency Use Only
Evaluation
for Agency
Use Only
4. Does the proposal conflict with policies of the Tukwila
Comprehensive Land Use Policy Plan?
No
Proposed measures to avoid or reduce the conflict(s)
are:
The SWMO and the development projects subject to its
regulations are reviewed at the preliminary design
stages by officials responsible for administering the
Comprehensive Land Use Plan.
DATE INIT.
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CC PLAINTS ACTIVITOLOG
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