HomeMy WebLinkAboutPermit L96-0081 - BOEING - SHORELINE EXEMPTIONL96 -0081
BOEING SHORELINE SUBSTANTIAL DEVELOPMENT EXEMPTION
SHORELINE MANAGEMENT EXEMPTION
3
City of Tukwila
John W. Rants, Mayor
Department of Community Development Steve Lancaster, Director
MEMORANDUM
TO: Steve Lancaster, DCD Director
FROM: Gary Schulz, Urban Environmentalist
DATE: December 19, 1996
RE: Plant 2 Duwamish Sediment Interim Measures Work Plan
Outfall 12 and Underflow Flume - The Boeing Co.,E96 -0036 & L96 -0081.
The Boeing Company is planning to conduct an interim hazardous sediment (PCBs) removal at
the Plant 2 site located at 7755 E. Marginal Way. An Interim Measures Work Plan has been
prepared to be consistent with the requirements of Administrative Order on Consent (Order -
Docket No. 1092 -01 -22 -3008 h) issued by the U.S. Environmental Protection Agency (EPA) to
the Boeing Company. The Order became effective on January 18, 1994.
A portion of the removal work will occur at an elevation below the ordinary high water line in
the Duwamish River. One of the two interim sediment removal locations in a portion of the river
channel that extends underneath the Plant 2 building. The total quantity of sediment material to
be removed is approximately 25 cubic yards. All the removal work is planned for a low tide
cycle in order to avoid working in the wet and potential resuspension of affected sediments. The
SEPA conditions for this project are listed below:
SEPA Conditions
1) Compliance with all associated Federal and State permits. Please provide copies of all
the permits required by other agencies or jurisdictions prior to initiating the work.
2) Work below the ordinary high line shall be conducted during a low tide cycle to avoid
erosion and sedimentation in the River.
3) Riverbank alteration will be restored to pre- existing location without encroachment into
the channel.
6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • (206) 431-3670 • Fax (206) 431-3665
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J Notice of Public Hearing
L Notice of Public Meeting
0 Board of Adjustment Agenda
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Li Board of Appeals Agenda
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fl Planning Commission Agenda
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0 Short Subdivision Agenda
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0 Notice of Application for
Shoreline Management Permit
0 Shoreline Management Permit
O F D I S T R I B U T I O N
hereby declare that:
fl Determination of Non -
significance
JJ Mitigated Determination of
Nonsignificance
O Determination of Significance
and Scoping Notice
fl Notice of Action
fl Official Notice
NOther (\f\ Aivth 124 L9' lel
was mailed to each of the following addresses
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File Number („q (Q 1(
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City of Tukwila John W Rants, Mayor
Department of Community Development Steve Lancaster Director
December 19,, 1996
Mr. Larry Allen
Boeing Commercial Airplane Co.
P.O. Box 3707, Mail Stop 19 -35
Seattle, WA 98124 •
Re: Shoreline Exemption : Plant 2 Duwamish Sediment Interim Measures Work Plan -
Outfall 12 and Underflow Flume, Tukwila File # E96 -0036 and L96 -0081.
Dear Mr. Allen:
The Department of Community Development has reviewed your project and SEPA checklist.
In accordance with WAC 173 -27 -050 (Shoreline Management), we are providing you this letter
of exemption for the project listed above.
The project is within navigable waters and is subject to a US Army Corps of Engineers permit
(Section 10 Permit). There is an Administrative Order on Consent issued by the U.S.
Environmental Protection Agency (EPA) to the Boeing Company. Therefore, under WAC 173-
27 -040 (3) Hazardous Substance Remedial Actions, the project is exempt from a "Shoreline"
Substantial Development Permit.
We have provided the necessary notification for this Shoreline Exemption and the SEPA
Threshold Determination to the appropriate agencies. If you have any questions about this letter,
please contact Gary Schulz at our office, 431 -3670.
Sincerely,
Steve Lancaster
Director of Community Development
City of Tukwila
cc: WA State Department of Ecology
6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • (206) 431-3670 • Fax (206) 431-3665
CITY OF TUKWILA 6300 Southcenter Boulevard, Tukwila, WA 98188
DEPARTMENT OF COMMUNITY DEVELOPMENT
Telephone: (206) 431 -3670
AFFIDAVIT OF INSTALLATION AND POSTING
OF PUBLIC INFORMATION SIGNS)
State of Washington
County of King
City of Tukwila
RECEIVED
DEC 1. 9 1996
COMMUNITY
DEVELOPMENT
I C YNT I-f A- K RA fJ (- (Print Name) understand that Section 18.104.110 of the Tukwila Municipal
Code requires me to post the property no later than fourteen (14) days following the issuance of the Notice
of Completeness.
I certify that on D€ c. 18 , I olq(o the Public Notice Board(s) in accordance with Section 18.104.110
and other applicable guidelines were posted on the property located at 164 Av.. n L4
so as to be clearly seen from each right -of -way providing primary vehicular access to the property for
application file number E b- 00361 L 14 -008
f./;free.
Affiarit (Applicant Signature)
SUBSCRIBED AND SWORN to before me this day of L , 19 -
olita
"OA%
\74 /14/ntdel
NOTARY PUj IC in and for the State of Washington
residing at
My commission expires on ile/ t u cr AS. / ? q q
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Plant 2 Duwamish Sediment
Interim Measures Work Plan
Outfall 12 and Underflow Flume
Boeing - Plant 2
Seattle/Tukwila, Washington
Submitted To:
The Boeing Company
Boeing Information Support Services
Safety, Health, and Environmental Affairs
October 1996
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Plant 2 Duwamish Sediment
Interim Measures Work Plan
Outfall 12 and Underflow Flume
Boeing —Plant 2
Seattle /Tukwila, Washington
Submitted to:
The Boeing Company
Boeing Information Support Services
Safety, Health, and Environmental Affairs
Seattle, Washington
October 1996
Prepared by:
Roy F. Weston, Inc.
700 Fifth Avenue
Suite 5700
Seattle, Washington 981.04 -5057
WO: 3709 - 034 -143 -0010
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TABLE OF CONTENTS
Section Page
1. INTRODUCTION 1
1.1 RATIONALE 1
1.2 INTERIM MEASURES OBJECTIVES 1
1.3 PROJECT PARTICIPANTS AND RESPONSIBILITIES 2
2. DESCRIPTIONS OF IM LOCATIONS 3
2.1 OUTFALL 12 3
2.2 UNDERFLOW FLUME 3
3. ALTERNATIVE INTERIM ACTIONS EVALUATION 4
4. SCOPE OF WORK 4
4.1 WORK SCOPE COMMON TO BOTH IMS 4
4.1.1 Health and Safety Plans 4
4.1.2 Permits 5
4.1.3 Access 6
4.1.4 Transportation and Disposal (T &D) 6
4.2 DESCRIPTION OF WORK ELEMENTS FOR IMS 6
4.2.1 Outfall 12 Plans and Specifications 6
4.2.2 Underflow Flume Plans and Specifications 8
5. OPERATION AND MAINTENANCE 11
6. MONITORING 11
7. SCHEDULE 11
8. INTERIM MEASURE CONSTRUCTION QUALITY ASSURANCE 11
9. REPORTING REQUIREMENTS 11
LIST OF TABLES
Table Title
1 Outfall 12 QA Checklist
2 Underflow Flume QA Checklist
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Plant 2 Duwamish Sediment Interim Measures Work Plan, Outfall 12 and Underflow Flume Table of Contents
LIST OF FIGURES
Figure Title
1 Sediment ICM Organization Chart
2 Location of PCB Removal Areas
3 Outfall 12 Removal
4 Underflow Flume Removal
5 ICM Schedule
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PLANT 2 DUWAMISH SEDIMENT INTERIM MEASURES WORK PLAN
OUTFALL 12 AND UNDERFLOW FLUME
TUKWILA, WASHINGTON
1. INTRODUCTION
This plan describes the scope of work to accomplish interim measures (IMs) at two locations at
Boeing Plant 2 to reduce PCB concentrations in fill and sediment. This action targets the two
highest PCB concentration areas found during the RCRA Facility Investigation (RFI) at Plant 2.
This Interim Measures Work Plan has been prepared to be consistent with the requirements of the
Administrative Order on Consent (Order) issued by the U.S. Environmental protection Agency
(EPA) to The Boeing Company (Boeing) under the authority of Section 3008(h) of the Resource
Conservation and Recovery Act of 1976 (RCRA), as amended, 42 USC 6928(h). This Order
[RCRA Docket No 1092- 01- 22- 3008(h)] became effective on 18 January 1994.
1.1 RATIONALE
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This proposed action targets the two highest PCB concentration areas found near or in the
Duwamish Waterway during the RFI at Plant 2. Although the PCBs do not present "an immediate
threat to human health and the environment," Boeing is proposing these IMs because:
• Removal of the "hot spots" source areas will reduce potential PCB migration and tend
to prevent the current areas of concern from expanding in size before the final corrective
action is implemented. These areas present a disproportionate potential risk when
compared to other areas of the waterway.
• The IMs will reduce potential exposure prior to the final corrective action.
• The action will be consistent with final remedies for the waterway.
• The action will simplify the final remedy with regard to waste segregation.
• The scope of the action facilitates a timely response to mitigate conditions.
1.2 INTERIM MEASURES OBJECTIVES
The objectives of these two IMs are:
• Removing PCB "hot spot" source areas to minimize potential PCB migration.
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Plant 2 Duwamish Sediment Interim Measures Work Plan, Outfall 12 and Undetflow Flume
• Providing increased protection of human health and the environment by removing the
two highest areas of PCB concentration.
• This action will result in the remaining areas being more uniform in concentration
enhancing final remedy design.
• Avoid the short-term risk of resuspension and dispersal associated with a larger scale
action.
• Facilitate a timely response given the physical constraints, administrative /permitting and
waste segregation issues.
1.3 PROJECT PARTICIPANTS AND RESPONSIBILITIES
Four primary participants are anticipated to participate in the performance of this project. The
main participants include: 1) the Boeing Company, 2) Roy F. Weston, Inc, 3) An Interim Action
Construction Subcontractor, and 4) Specialty Subcontractors. The responsibilities of these
participants are as follows:
The Boeing Company
Boeings responsibilities include project direction (Boeing Information and Support Services,
Environmental Affairs), and project oversight, site security, integration of the interim measures
with ongoing facility operations, disposal of hazardous wastes, personnel access badges, space
allocation, site usage and other miscellaneous support items associated with planning and
performance of the work. Boeing will provide a project engineer to oversee the work performed.
Roy F. Weston, Inc.
Weston's responsibilities will be to prepare the work plan, design specifications and to bid and
award the work to an interim action construction subcontractor and specialty subcontractors.
Weston will serve as the project construction engineer and coordinator, direct subcontractors and
act as the interface between the subcontractors. Weston will manage the day to day activities
occurring at the site, prepare daily reports, collect and analyze samples, document the work and
;`1! provide health and safety oversight of the subcontractors. Weston will arrange for specialty
services such as floor cutting, Baker tanks and vacuum truck services. Weston will provide an on-
site construction engineer to supervise the work and a project manager to provide project
oversight.
Interim Action Construction Subcontractor
The interim action construction subcontractor will be responsible for site preparation, outfall 12
fill excavation, truck loading, deployment of runoff control measures, backfill provisions, worker
health and safety monitoring, pumps, piping, sediment stabilization with cement kiln dust (CKD),
equipment decontamination, exclusion zones, decontamination stations, tarping trucks and roll
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offs, spill protection and general laborers. The interim action construction subcontractor will
report directly to WESTON's on -site construction engineer.
Specialty Subcontractor
Specialty subcontractors will be responsible for providing unique services such as vacuum truck
services, floor cutting, temporary tank provisions, etc. These subcontractors will report directly to
WESTON.
An overall organization chart is shown in Figure 1.
2. DESCRIPTIONS OF IM LOCATIONS
The two areas targeted for IMs are depicted on Figure 2. The PCB concentrations contours
represent a professional judgment of the distribution of total PCBs. PCBs will be removed within
the estimated 25 ppm contour consistent with the rationale and goals. A description of each area
of removal is provided below.
2.1 OUTFALL 12
The terminus of Outfall 12 discharged to the bank surface on the southwest edge of the facility
(see Figures 2 and 3) at an elevation above the ordinary high water line. The elevation of this area
is approximately +9 feet MLLW. The area of PCB release greater than 25 ppm is outside the 2 -49.
Building overhang. Maximum PCB concentrations found in this area were 26 ppm (surface) and
890 ppm (subsurface).
The affected area is exposed and accessible during low tide. The potentially PCB -laden material
on the surface of the bank consists of riprap, crushed rock, and granular fill. Subsurface material
is composed of granular fill consisting of sand and gravel. Moisture content is expected to be low
(in -place density of approximately 130 lb /ft3). The total material proposed for removal from the
Outfall 12 area is approximately 8.8 bank yd3 (bcy). The planned excavation is 10 feet wide by 12
feet long by 2 feet deep with vertical sidewalls.
2.2 UNDERFLOW FLUME
The underflow flume is located beneath the floor of the 2 -41 Building which overhangs the
Duwamish Waterway (see Figures 2 and 4). The overhang is supported on 10 -foot centers by
driven wood piles. The material having PCB concentrations greater than 25 ppm is located
underneath the footprint of the 2 -41 Building overhang. This area is below the ordinary high
water line at an elevation of approximately 0 feet MLLW. Minor debris (dimensional lumber,
rubble, etc.) is mixed with the underlying sediment. Maximum PCB surface concentrations in this
area are less than 25 ppm.
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The maximum subsurface PCB sediment concentration is 32.4 ppm. The sediment to be removed
is expected to be fine sand and silt, with 30 to 60 percent water content with an in -place density
of 1051b /ft3. The total inplace volume planned for removal from the underflow flume is 14.2 bcy.
The proposed excavation is 12 feet wide by 16 feet long by 2 feet deep with vertical sidewalls.
3. ALTERNATIVE INTERIM ACTIONS EVALUATION
Several alternatives were considered for these hot spots. The alternatives were:
• No action
• Capping
• Removal
No action was not selected because of the potential for the hot spot constituents to migrate and
because existing conditions could complicate waste segregation during implementation of the final
remedy. Migration of the PCBs also could make the final corrective action encompass a larger
area and could increase the impact on the environment.
Capping was not selected because it may not be consistent with the final action. Capping could
result in increased dredging volumes and disposal costs if a removal action is selected as the final
remedy in whole or in part.
Removal was selected because it eliminates the potential for migration prior to the final remedy
implementation and simplifies waste segregation for the final remedy. Removal is also compatible
with any final remedy selected.
4. SCOPE OF WORK
Two separate and distinct removals are planned. The removal occurring at Outfall 12 will be
performed using conventional excavation equipment. The removal planned for the Underflow
Flume will be completed by a vacuum excavation removal method. The removal plans and
specifications for each IM are described below.
4.1 WORK SCOPE COMMON TO BOTH IMS
4.1.1 Health and Safety Plans
An OSHA/WISHA- compliant HASP covering all personnel will be prepared. A HASP will be
prepared by both Weston and the Interim Action Construction Subcontractor. The HASP will
address protective equipment, safety procedures, and training.
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It is anticipated that the work will be performed in modified level D PPE. This includes the
following equipment:
• Hard -hats with spray shields
• Safety Glasses
• Rubber steel toed boots /leather steel toed work boots
• Water resistant coveralls (SARANEX)
• Chemical resistant gloves
• Personnel flotation devices
4.1.2 Permits
The potentially applicable permits may include the following
• Grading Permit
• State Environmental Policy Act (SEPA) —City of Tukwila
• Shoreline Development Permit —City of Tukwila
• 401 Certification/Water Quality Certification — Washington State Dept. of Ecology
(WDOE)
• Coastal Zone Management consistency (CZM) —WDOE
• Hydraulics Permit Application (HPA)— Department of Fisheries
• Right of Entry— Department of Natural Resources
• U.S. Army Corps of Engineers Dredging Permit under the Clean Water Act § 404 (may
qualify for Nationwide Permit, such as #38 Cleanup of Hazardous and Toxic Waste)
• Approval to Allow Temporary Exceedance of Water Quality Standards- Department of
Ecology
• Section 10 Permit (for work in navigable waters) - U.S. Army Corps of Engineers
This list may not be inclusive. The unique approaches to the IMs described below were
developed so as to minimize permitting requirements to achieve the goal of a timely response.
The proposed actions are designed to facilitate expedited processing of, or waivers from, the
potential permitting with the aid of WDOE/EPA.
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To expedite the permitting process, a Joint Aquatic Resources Permit Application (JARPA) can
be completed and submitted to the involved agencies. This allows a single permit to be completed
which fulfills the need of many of the above listed permits. Permits covered under the JARPA
include 1) Hydraulic Permit, 2) Shoreline Management Permits, 3) Approval for Exceedances of
Water Quality Permits, 4) Section 401 Water Quality Certifications, 5) Floodplain Management
Permits, 6) Section 404 Permit and 7) Section 10 Permit.
4.1.3 Access re w2
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An access agreement will be required for Outfall 12 and, potentially, the underflow flume. The d p
proposed removal at Outfall 12 is not on Boeing property, and the removal area at the underflow u) w'.
flume abuts property owned by the Port of Seattle. iu
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The sediment is a remediation waste (dredged material) some of which may contain PCBs at LL
concentrations of 50 ppm or greater. The dredged material will be disposed of in a hazardous CO v
waste landfill permitted to receive TSCA waste in accordance with 40 CFR 761.60(a)(5)(ii). The
sediment will be stabilized to meet the requirements of the disposing landfill. Boeing will arrange Z ~
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and pay direct for T &D of the dredged material. Boeing will also be responsible for disposal of all w
liquids and debris generated from sediment dewatering, personnel decontamination, etc. ? o
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4.2.1 Outfall 12 Plans and Specifications — o,
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The material to be removed at this location consists of gravel and sand which resides on a steeply
declining slope to the Duwamish Waterway. Standard excavation techniques and equipment are
recommended for removal of the affected soil. A sketch showing the proposed plan is provided in
Figure 3.
Mobilization
Limits of excavation will be measured and staked. The area to be excavated is 10 feet wide by 12
feet long by 2 feet deep. Existing emergency response boat and booms will have to be relocated
for the day due to access limitations. An adsorbent pad boom will be placed on the sediment
surrounding the excavation area out board of the silt curtain. A silt curtain/fence will be installed
at the base of the slope. Atrack hoe will be mobilized and will cut a bench in the slope from
which to work. The large track hoe is required to get the boom length necessary for the removal.
The material cut from the bench will be stockpiled adjacent to the building for reuse. Backfill will
be ordered and on call. Excavation of the affected soil will be scheduled for a zero tide day.
An exclusion zone will be established at the top of the slope area approximately parallel with the
south wall of the building. Modified level D PPE will be required beyond the exclusion zone. A
small decontamination station will be setup adjacent to the exclusion zone which will include PPE,
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29 October 1996
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Plant 2 Duwamish Sediment Interim Measures Work Plan, Outfall 12 and Underflow Flume
a decontamination tub, brushes, disposal bin for used PPE, first aid kit and other supplies. Dump
trucks will be kept outside the exclusion zone in the clean zone. Plastic sheeting will be placed on
the ground between the excavation area and the dump trucks to keep from impacting unaffected
soil with PCBs as it is loaded by the excavator.
Removal a
The excavator will remove riprap and soil to the limits specified by the supervising engineer.
Excavation material will be loaded into solo dump trucks. The trucks will be draped with a plastic
liner. Dump trucks will contain stabilizing agent such as cement kiln dust (CKD) provided directly d o'
from bags by technicians. The first dump truck will go to a certified scale to verify weight and cow:
return if too heavy. A second single dump truck will carry any overs and the balance of the -I '-`
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Post - excavation documentation sampling will occur after excavation limits have been reached. A ga
post excavation sampling grid will be sampled for total PCBs upon completion of excavation to N
the defined limits. The purpose is to document conditions prior to backfill and/or direct additional w
excavation. _
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Four samples will be taken from the bottom of the 10 foot by 12 foot excavation area. An amino w uj
assay test kit (D -Tech Kit No. Tk- 1002 -1, EPA Method 4020) will be used for the field sampling
to identify PCB concentrations of Aroclor 1254 and 1260. The field screening samples will be 8 co,
tested on -site. Data from these tests will be used to decide whether to backfill or continue o
removal. One confirmation sample will be submitted to ARI for analysis. _
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After the material has been excavated and prior to backfill, the hole will be covered with a
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nonwoven needle punched geotextile or equivalent to prevent erosion. The geotextile will be co:
weighted down with bricks, 6 -inch stone or equivalent equally spaced at a distance of 0
approximately 3 feet. Z .
The benefits of this action in addition to meeting the goals include:
potential resuspension of affected sediments..
• Minimizing or potentially waiving permit requirements.
• Avoiding the substantial effort increase associated with alternate removal equipment and
in -water work that would conflict with the IM goals.
Approximately 9 bank yd3 of soil is planned for excavation. A 5 percent weight increase is
planned from cement kiln dust (CKD) additive for stabilization. A 20 percent increase in volume
is planned for fluffing. Total estimated disposal weight is 16.2 tons. Total volume is estimated at
lO to 11 yd3.
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Plant 2 Duwatnislt Sediment Interim Measures Work Plan, Outfall 12 and Underflow Flume
The upper maximum tonnage of removed soil for this location will be limited to 30 tons (i.e., 20
yards).
Decontamination
The hoe bucket and thumb will be the only equipment requiring decontamination. The
decontamination will be done in the second solo dump truck. The bucket will be brushed clean,
detergent washed and solvent rinsed. Solvent rinse will be collected for disposal by Boeing in a
separate container. Decontamination brushes, personal protective equipment (PPE), adsorbent
booms and silt curtain will be disposed of in the second dump truck.
Backfill
Backfill will be placed by the excavator. Backfill will consist of 10 tons of riprap (2 -foot minus),
and 20 tons of 2 -inch minus crushed rock. The fill will be tested to confirm it is below SQS
(WAC 173 -204) concentrations. The excavation limits will be backfilled to replace in -kind
conditions. The excavator will replace the material cut from the bench in the boat ramp to
original configuration.
Demobilization
Demobilization will occur same day or the following day depending on schedule.
4.2.2 Underflow Flume Plans and Specifications
The material to be removed at this location consists of very soft sediment (fine sand and silt) to
depths of 1 -2 feet. Several methods of removal of this sediment were considered which consisted
of 1) a barge mounted dredge, 2) a barge mounted excavator, 3) construction of a wooden
boardwalk along the edge of the building for small light weight equipment access, 4) removal with
a Super Sucker, 5) removal with a screw conveyor through a hole in the building floor, and 6)
removal with manual laborers. It was determined that removal using a Super Sucker is the most
optimum method since it would be the quickest, most safe, and likely of least cost. Several
sources and vendor contacts have indicated that this equipment has the capability to remove the
sediment. The proposed plans are shown in Figure 4.
In the event removal rates are too slow using the Super Sucker, an alternate plan using a screw
conveyor will be implemented. The conveyor will be positioned through the hole cut in the floor.
Sediment will be transferred by the conveyor up to waiting lined trucks.
Mobilization
The limits of excavation will be measured and staked. The area to be excavated is 12 feet wide by
16 feet long by 2 feet deep. Site preparation includes concrete coring (12 -inch diameter) of the 2-
41 Building floor for vacuum tube /hose access, removal of some sub -floor timbers for worker
access, delivery of roll -offs, and delivery of portable Baker or Rain- for -Rent tanks and electric
sump pumps. An absorbent pad boom will be placed on flats surrounding excavation area. A silt
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Plant 2 Duwamish Sediment Interim Measures Work Plan, Outfall 12 and Underflow Flume
curtain will be installed around the excavation area, keyed into the sediment, and fixed to piling.
Work is to be scheduled to be performed on a -1 foot tide day. To provide assurance that the
building floor will support the placement of heavy equipment, additional supports or load
spreading steel plates will be used.
It is anticipated that 2 to 3 exclusion zones will be established for this work. An exclusion zone
will be established at the entrance to the access to the impacted sediment. This may be the gate
north of Building 2 -41, or at the access point from the underbuilding catwalk to the sediment.
Another exclusion area may be setup inside the building around the Super Sucker and the Baker
tanks used for receipt of liquids. The third exclusion zone may be setup outside the building
around the rolloffs used to receive the sediment.
Modified level D PPE will be required inside all exclusion zones. A small decontamination station
will be setup adjacent to each exclusion zone which will include PPE, a decontamination tub,
brushes, disposal bin for used PPE, first aid kit and other supplies.
Removal
A Super Sucker will mobilize into the building and access sediment with a smooth wall, 6 -inch-
diameter vacuum tube, with flex tubing at its end, through the access holes cut in the floor.
Laborers will direct the tube and move sediment to it with handtools. A submersible pump will be
installed in the excavation and will pump water upward through the floor to the Baker tanks
placed in the building. Removal of the excess water will minimize water in the Super Sucker and
limit migration of suspended solids from the removal area. Debris (dimensional lumber, tires,
flotsam, etc.) will be removed by hand and manually transmitted to roll -offs.
Excavation rates are anticipated in the 2 to 4 yards/hour range. Depending on progress, the tides,
and schedule, a second Super Sucker can be mobilized. Labor crews will remove sediment to the
limits specified by the supervising engineer.
If more than one day is required to remove the sediment, the affected area will be covered with a
60 mil nonwoven needle punched geotextile weighted down with equally spaced bricks, 6 inch
stones or equivalent between low tides. The weights will be spaced at a maximum distance of 3
feet apart. The geotextile will be placed before the removal area becomes covered with water each
day until the area is backfilled with sand.
Excavated material will be end - dumped into a low profile mixing tank for stabilization. In the
mixing tank, CKD will be added to stabilize the sediment. When the sediment has been stabilized,
it will be tested using the paint filter test. The stabilized material will then be loaded into roll offs.
The roll offs will be lined with plastic. Plastic will also be placed underneath the roll offs to
protect the ground from spillage. It is estimated that two roll offs will be needed. Free water will
be pumped from the mixing tank into a baker tank prior to adding CKD stabilization agent. CKD
will be provided directly from a cement truck into the mixing tank. The mixing tank will be
covered with plastic during CKD placement to minimize air borne dust. Sediment will be
stabilized in the mixing tank by backhoe mixing.
96- 885W.DOC
9
29 October 1996
PR10 /SEA
Plant 2 Duwamis)t Sediment Interim Measures Work Plan, Outfall 12 and Underflow Flume
Demobilization
All equipment will be removed from the site and the wooden members replaced under the building
overhang. The hole cut in the building floor will be replaced in kind with concrete.
5. OPERATION AND MAINTENANCE
Because this is a removal action, no long or short term operation and maintenance requirements
are required.
6. MONITORING
No long- or short -term monitoring will be performed.
7. SCHEDULE
Local permits are anticipated to require 90 days for approval. Shoreline and SEPA permits may
require up to 150 days for approval. These approval periods may be shortened depending upon
the degree of urgency and cooperation given by the approving agencies.
Contractor scope of work development and procurement is estimated to require 45 days.
Outfall 12 restoration, mobilization, excavation, and backfill will occur in two days. Equipment
demobilization may extend into the next day.
The schedule for the underflow flume will initiate when storage racks have been removed.
Mobilization/site preparation will take approximately three days. The excavation is scheduled for
two days based on an excavation rate of 2 to 4 yards/hour (30 yard maximum). One day of
demobilization, which is largely decontamination, is scheduled. Total effort is 6 to 7 days.
A preliminary schedule for this work is provided in Figure 5. The work must be scheduled around
a minus tide day.
8. INTERIM MEASURE CONSTRUCTION QUALITY ASSURANCE
Construction quality assurance requirements will be implemented and verified per the checklist
provided in Tables 1 and 2.
9. REPORTING REQUIREMENTS
Daily reports will be prepared in the field by the on -site construction engineer during each day
work is performed. The reports will be prepared throughout the day and be completed for each
day before the construction engineer leaves the site. The reports will be prepared on preprinted
96- 885W.DOC
11
29 October 1996
PR10 /SEA
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forms in ink. The reports will be maintained in a dry secure location. The daily reports will
include the following information:
• Construction engineers name
• Date
• Tidal information
• Weather (temperature, precipitation, other observations)
• Equipment On -site
• Personnel (contractors, visitors, agency)
• Work start and end time
• Work performed
• Testing/Inspections performed
• Problems/Issues
• Critical Conversations/Directions Received or Given
• Materials brought on -site
• Wastes/debris disposed off -site
• Other pertinent information (sketches, test data, unknown conditions, etc.)
Monthly status reports will be prepared by the construction engineer and submitted to Boeing.
Progress updates will be provided to the EPA as requested.
96- 885W.DOC
•
12
29 October 1996
PR10/SEA
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Description
Criteria
Inspection Method
Performed by
Approved
(initial)
1) Stake
Excavation Area
+- 2 inches
tape measure
Construction
Engineer
2) Sediment
Manifesting
NA
visual
Boeing
Representative
3) Spill Prevention
place plastic between
truck and excavator
visual
Construction
Engineer
place CKD in truck bed
visual
Construction
Engineer
no free liquid in stabilized
soil
visual
Construction
Engineer
4) Sampling
4 samples equally spaced
over bottom - field
analysis
visual
Construction
Engineer
1 confirmatory sample for
lab analysis
visual
Construction
Engineer
5) Decon
decon hoe bucket
visual
Construction
Engineer
6) Backfill
rip rap - 2' minus
visual- verify before
shipment to site
Construction
Engineer
crushed rock- 2" minus
visual- verify before
shipment to site
Construction
Engineer
7) Excavation
depth
2' +- 2 inches
•
measure (tape measure
or equiv) 4 corners and
2 location in midsection
Construction
Engineer
8) Water Quality
cover excavation area at
days end with geotextile
visual
Construction
Engineer
weight down geotextile
with brick spaced
maximum 3 feet apart.
visual
Construction
Engineer
Silt curtain and absorbent
boom in place
visual
Construction
Engineer
96- 885W.DOC
1
29 October 1996
PR10 /SEA
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Description
Criteria
Inspection Method
Performed by
Approved 1
(initial)
1) Stake
Excavation Area
+- 2 inches
tape measure
Construction
Engineer
2) Sediment
Manifesting
NA
visual
Boeing
Representative
3) Spill Prevention
•
no leaks in pump /piping
visual
Construction
Engineer
place CKD in mixing tank
visual
Construction
Engineer
no free liquid in stabilized
soil in roll offs
visual
Construction
Engineer
verify no leaks in Baker
tanks after liquid
placement
visual
Construction
Engineer
place plastic under roll-
off area
visual
Construction
Engineer
4) Sampling
as needed at end of each
day - field analysis
visual
Construction
Engineer
1 confirmatory sample for
lab analysis
visual •
Construction
Engineer
sample fill for SQS - lab
analysis
visual
Construction
Engineer
5) Decon
decon hoe bucket,
pumps, tanks, hand tools,
super sucker
visual
Construction
Engineer
6) Backfill
medium to fine sand- see
section 3.2.2
requirements
check sieve data
Construction
Engineer
7) Excavation
depth
2' +- 2 inches
measure (tape measure
or equiv) 4 corners and
2 location in midsection
Construction
Engineer
8) Water Quality
cover excavation area at
days end with geotextile
visual
Construction
Engineer
weight down geotextile
with brick spaced
maximum 3 feet apart.
visual
Construction
Engineer
Silt curtain and absorbent
boom in place
visual
Construction
Engineer
96- 885W.DOC
2
29 October 1996
PRIG /SEA
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BOEING PROJECT
ENGINEER
(Mike Gleason, P.E.)
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WESTON PROJECT
MANAGER
(Larry Vanselow, P.E.)
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WESTON CONSTRUCTION <>
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Sediment ICM Organizational Chart
96- 885W.FI(i
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IV Sheet Plle Alignment
Al Storm Drain
Bathymetrlc Contour
SYMBOL EXPLANATION
> 25 ppm PCB DW
?'- > 50 ppm PCB DW
NOTES
1) Total Dry Weight PCB
1171446 OtsrmrucNSit IAN'S
DATE October 10, 1906 1x66 PM
JOB NUMBER: 03700. 034 - 143 -001000
LEAD GIS ANALYST: K. Palmer
VIEW FILE drypabadpots.vlew
CHECKED BY:
APPROVED BY:
Location of PCB
Removal Areas
EXPLANATION!
411444 SURFACE SAMPLE LOCATION AND
CONCENTRATIONS (PPB PCBS)
OW SUBSURFACE SAMPLE LOCATION AND
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(MOW SUBSURFACE SAMPLE LOCATION AND
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UNDERFLOW FLUME REMOVAL
ICM Schedule
Figure
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1
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15d
EPA Review
10d
4
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5d
5
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9
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10d
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11
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Figure
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96•885W.1:1(1
BOEZAW
Boeing Commercial Airplane GP--1
P.O. Box 3707
Seattle, WA 98124 -2207
October 15, 1996
R- 1150 -96 -RR -420
Ms. Sylvia E. Burges
RCRA Compliance Section, HW -104
UPS,. Environmental Protection Agency, Region 10
1200 Sixth Avenue
Seattle, WA 98101
Dear Ms. Burges:
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Era - REGIO .v
Subject: Boeing Plant 2, WAD 00925 6819
RCRA Docket #1092- 01- 22- 3008(h)
Periodic Progress Report No. 33 (September 1996)
As required by Section 10.6 of the subject Order, The Boeing Company (Boeing) is
providing Periodic Progress Report No. 33 for September 1996, for work performed
pursuant to the Order.
RFI WORK STATUS
RFI Progress Summary
Progress towards the development of the Duwamish Waterway Sediment Human
Health and Environmental Evaluation Work Plan continued through the month of
September 1996. The general approach for conducting these evaluations was
presented to EPA, WDOE, NOAA, and representatives of the Muckleshoot Indian
Tribe in a meeting which,took place on August 6, 1996. General consensus on
Boeing's proposal was received at that time. As agreed in the August meeting,
Boeing committed to the development of a more detailed scope of work document to
be submitted to EPA in late September or October 1996. This document will offer
specifics relating to the methodology to be used to assess the potential risk to health
and potential impacts to the environment. Currently, Boeing anticipates completion .
and delivery of the Duwamish Waterway Sediment Health and Environmental
Evaluation Work Plan to EPA in mid- October 1996.
Boeing also informed EPA in the above referenced meeting that a proposal for
conducting an Interim Measure in the Duwamish sediments off the Plant 2 Facility
was currently being refined. The Interim Measure proposal in the Duwamish
sediments was presented to EPA, WDOE, and NOAA on September 24, 1996. A
copy of the Interim Measure proposal in the Duwamish sediments was mailed to the
Muckleshoot Indian Tribe on September 26, 1996. Boeing's proposal involved
conducting limited sediment excavations at two locations along the Plant 2 shoreline.
•
Page 2
Ms. Sylvia Burges
R- 1150 -96 -RR -420
The rational for scoping the proposed Interim Measure in the Duwamish was to
satisfy the following objectives: 1) establish a meaningful removal criteria that
allowed taking action in the near term due to permitting complications, 2) removal of
contaminated material that would have to be segregated during implementation of
the final remedy due to TSCA requirements, and 3) offered no risk of re- suspension
or dispersal of contaminated sediments. The criteria proposed for this Interim
Measure is the removal of PCB surface sediment contamination greater than 25 ppm.
BOE//'YG There are only two locations along the Plant 2 shoreline which exceed this criteria.
The two locations are 1) Outfall 12 at the 2 -49 Building and 2) the underflow flume
located in the middle of the 2-41 Building. It is estimated that approximately 8.8 and
14.2 bank cubic yards, respectively, of PCB sediment contamination exceeds this
criteria. This proposal was well received by the attending agency representatives at
the September 24 meeting and Boeing was encouraged to proceed with all planning
necessary to implement the proposed Interim Measure. Additionally, Boeing
committed to developing a formal Interim Measures Work Plan for this proposal to
be submitted to EPA concurrently with planning and implementation of the Interim
Measure.
2 -70 Building Oil/Water Separator
In mid September 1996, a previously unknown oil/water separator was discovered at
the 2 -70 Building in the southern part of the Plant 2 Facility as part of a repaving
construction repair. The separator was located on the south side of the 2 -70
Building in a vehicle traficway adjacent to the building. It's approximate size was 5'.
long by 4' wide by 5' deep. The separator was no longer in operation, was filled with
pea gravel, and had been paved over completely. A preliminary investigation of the
historical operation of the separator revealed that it was associated with the activities
of previously identified SWMU 2 -70.5. On September 26,1996, EPA was notified of
this discovery (telephone conversation between Sylvia Burges and Rudolph Rogers).
Additionally, EPA was informed of Boeing's intent to remove the separator and
sample the surrounding soil for release determination. The removal and sampling
was completed in early October 1996. The results of the related investigation will be
reported in the October 1996 Periodic Progress Report.
ORDER DELIVERABLES /ACTIONS COMPLETED THIS REPORTING
PERIOD (SEPTEMBER 1996)
The following Order driven activities were completed during this reporting period:
- Presentation of the proposal to conduct an Interim Measure in the
Duwamish Sediments off the Plant 2 Facility to EPA, WDOE, NOAA on
September 24, 1996.
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Page 3
Ms. Sylvia Burges
R- 1150 -96 -RR -420
ACTIVITIES PLANNED FOR NEXT REPORTING PERIOD (OCTOBER
1996)
The following activities are planned for the next reporting period:
- A Work Plan for conducting Interim Measures in the Duwamish sediments
off the Plant 2 Facility will be submitted to EPA in October 1996.
- A Sediment Human Health and Ecological Evaluation in the Duwamish.
Waterway Work Plan will be submitted to EPA in October 1996.
- The Facilitywide Monitoring Well Network Groundwater Sampling and
Analysis Report for May 1996 will be submitted to EPA in October 1996.
Should you have any qu stions regarding this periodic report, please don't hesitate to
call.
Jr.
P .'ect C • : dinator
737/ Programs
R -1150, 19 -16
(206) 544 -2393
. M. Babich, III
Environmental Affairs Manager
737/757 Programs
R -1150, 63 -41
(206) 234 -1766
cc: Byung Maeng - Washington Department of Ecology
Teresa C. Michelsen - Washington Department of Ecology
BOE /NG
Page 4
Ms. Sylvia Burges
R- 1150 -96 -RR -420
bcc: Mary Armstrong 19 -01
Mike Babich 63 -41
Larry Cameron 19 -14
Paul Carlson 13 -08
Skip Fox 7A -XA
Charles Keller 19 -16
Jim Medzegian 63 -60
T. McCain 13 -08
J.J. Nelson 2R -70
Kirk Thomson 7A -XE
Liz Warman 14 -49
STATE OF WASHINGTON
DEPARTMENT OF ECOLOGY
Northwest Regional Office, 3190 - 160th Ave S.E. • Bellevue, Washington 98008 -5452 • (206) 649 -7000
October 14, 1996
Rudy Rogers
The Boeing Company
P.O. Box 3707, R -1150, 19 -16
Seattle WA 98101
Re: Interim Cleanup Plan
Dear Rudy:
This letter clarifies Ecology's expectations for an interim cleanup plan under SMS.
Because final rule language has not yet been developed to address interim cleanups under
SMS, the items below are adapted from MTCA cleanup regulations (draft SMS rule
language is also based on the MTCA regulations). These items also include information
needed to facilitate permitting of the action. It is understood that these elements will be
included in an interim measures plan that will be submitted to EPA under RCRA. The
following elements should be addressed (not necessarily in this order):
• The goals of the interim action, including an explanation of why it is appropriate to
conduct this specific interim action ahead of the final action
• A description of the proposed interim action and schedule
• Alternative interim actions considered and reasons for selecting the proposed action
• A statement 'describing its relationship to the larger area potentially requiring cleanup
and possible final actions to address this area, including whether the interim action has
the potential to foreclose future cleanup alternatives
• Relevant summary information from the RFI, including maps of the areas to be
excavated and existing sampling data from these areas
• A description of site conditions that affect the interim action, such as buildings,
bathymetry, tides, etc. that have been taken into account in designing the action
• Engineering specifications
• Potential environmental impacts and mitigation measures (e.g., silt curtains)
• Monitoring/sampling and analysis plan for any samples to be taken before, during, or
immediately after construction.
0
As you are aware, conducting an interim cleanup action does not address or limit Boeing's
responsibility for conducting a final cleanup of the sediment contamination adjacent to the
Boeing Plant 2 site under SMS.
Please contact me at 649 -7257 with any questions on the above, and let me know if I can
assist you further.
Sincerely,
Teresa Michelsen
Sediment Cleanup Specialist
cc: Sylvia Burges, EPA
Rachel Friedman- Thomas, Ecology
CITY OF VKWILA
Department of Community Development
6300 Southcenter Boulevard, Tukwila, WA 98188
Telephone: (206) 431 -3670
ENVIRONMENTAL REVIEW (SEPA)- APPLICATION
To submit for SEPA review, provide the items listed above to the Planning Division at 6300
Southcenter Boulevard, Room 100.
❑ 8 copies of the completed and signed environmental checklist.
You may use the City's pre - printed form or you may re -type the questions on your
computer. If you choose to re -type the form into your computer, be sure to do so
accurately. Mistakes or omissions will increase the review time.
❑ 8 sets of the full size plans needed to clearly describe the proposed action.
❑ One PMT set of plans reduced to 8.5" x 11".
❑ Four copies of supporting studies.
❑ One copy of the checklist application.
❑ One set of mailing labels for all properties 500' from the subject property. (See address
label worksheet.)
❑ $325 filing fee.
JIPtLETING THE CHECKLI
The checklist contains several pages of questions which you are asked to answer. It covers a
comprehensive set of topics. As a result, several of the questions may not apply to your project.
If a particular question does not apply, simply write N/A undemeath. HOWEVER, be aware that
many questions apply despite appearing not to. Care needs to be taken in reading and
answering the questions to ensure the appropriate response is provided.
It is important that accurate and clear information be provided. You may not know all of the
answers. Answer each question to the best of your ability. If we find an answer to be
insufficient, the City may contact you to ask for more information.
Sometimes, after reviewing the checklist, the City will ask you provide additional studies or
information. Commonly requested information includes traffic analysis, site topography, soils
studies and tree surveys.
f
CITY OP'"UKWILA
Department of Community Development
6300 Southcenter Boulevard, Tukwila, WA 98188
Telephone: (206) 431 -3670
SEPA APPLICATION CHECKLIST
FOR STAFF USE:ONLY.s
fanner::;:
File Number:
eceipt, Numbe
Cross- reference files:
Applicant; notified, ofincomplete'a lication:
ipl cant notified of complete application:
oticeot appli cation issued
A. NAME OF PROJECT /DEVELOPMENT:
PL►a 1)aavgmisN SCDIm£N; TeR.IM p1 )
B. LOCATION OF PROJECT /DEVELOPMENT: (address and accessors parcel number(s))
PPciUti t. Cob I bo- co2 o
7155 rnR26 I+vq -c. WA- y 4. SeP-rri.,.; L WP 9�Iz
Quarter: Section: 33 Township: Zy N Range: 4 c- t5r
(This information may be found on your tax statement)
C. PROJECT DESCRIPTION:
rvl o V h L, O I S PoS,\ LL• D F • v� A2015 »' T►1 416(t 19C-8. Co NCOJ i e4-7ct)
D. APPLICANT:
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NAME: jj0t /AA= .dThf?7 t/2C/A-L- w
ADDRESS: t' U' .B04 37 0 7 /q-36
PHONE: ✓ '/ L/— /&
SIGNATURE: DATE:
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CITY OF TUKWILA 6300 Southcenter Boulevard, Tukwila, WA 98188
DEPARTMENT OF COMMUNITY DEVELOPMENT
Telephone: (206) 431 -3670
ADDRESS LABEL REQUIREMENTS
The City of Tukwila requires that neighboring residents, businesses and property owners be notified of
certain types of pending applications in order to encourage citizen participation in the land use process.
Applicants are therefore required to submit the following materials:
• Mailing labels listing the owners of record for all property within 500 feet of the boundaries (not the
center) of the applicant's site (2 sets or 3 sets if SEPA review is required).
• Mailing labels listing the residents or businesses of any property within 500 feet of the property if
they are different from the land owners (2 sets or 3 sets if SEPA review is required).
• One copy of an assessor's map(s) showing the boundaries of the subject property and the 500 foot
radius.
Property owner names and addresses can be obtained from the King County Department of Assessment
located on the 7th floor of the King County Administration Building, Room 700, 500 Fourth Avenue,
Seattle. To compile the information required:
• Obtain the assessor's map(s) which contain(s) your property and all neighboring properties within
500 feet (See example diagram). You may use the maps on file in the Assessor's Office or purchase
a set from the King County Department of Public Works Map Counter on the 9th floor of the
Administration Building. Purchased maps must be ordered several hours in advance of the time you
would like to pick them up.
• After securing the assessor's maps, obtain a "Real Estate Inquiry Batch Request Sheet" from the
Department of Assessment. On this form provide the tax account number for each affected property
as shown on the assessor's map(s) and submit the completed form to the Department of Assessment
with the appropriate fee. Applicants can request that the information be printed in mailing label form
or on standard paper.
To obtain occupants /resident/business names and addresses, consult the Kroll maps located in the Tukwila
Department of Community Development and then visit the site to determine resident names and unit
numbers. The information on the mailing labels may refer to "Resident" or "Tenant ", with the proper
mailing address, if.the specific name is unknown.
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ENVIRONMENTAL CHECKLIST
Purpose of Checklist:
The State Environmental Policy Act (SEPA), chapter 43.21C RCW, requires all governmental agencies
to consider the environmental impacts of a proposal before making decisions. An environmental impact
statement (EIS) must be prepared for all proposals with probable significant adverse impacts on the quality
of the environment. The purpose of this checklist is to provide information to help you and the agency
identify impacts from your proposal (and to reduce or avoid impacts from the proposal, if it can be done)
and to help the agency decide whether an EIS is required.
Instruction for Applicants:
This environmental checklist .asks you to describe some basic information about your proposal. The City
uses this checklist to determine whether the environmental impacts of your proposal are significant,
requiring preparation of an EIS. Answer the questions briefly, with the most precise information known,
or give the best description you can.
You must answer each question accurately and carefully, to the best of your knowledge. In most cases,
you should be able to answer the questions from your own observations or project plans without the need
to hire experts. If you really do not know the answer, or if a question does not apply to your proposal,
write "do not know" or "does not apply ". Complete answers to the questions now may avoid unnecessary
delays later.
Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations.
Answer these questions if you can. If you have problems, the City staff can assist you.
The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of
time or on different parcels of land. Attached any additional information that will help describe your
proposal or its environmental effects. The City may ask you to explain your answers or provide additional
information reasonably related to determining if there may be significant adverse impact,
Use of checklist for nonproject proposals:
Nonproject proposals refer to actions which are different or broader than a single site specific development
project, such as plans, policies and programs.
Complete this checklist for nonproject proposals, even though questions may be answered "does not apply ".
In addition, complete the supplemental sheet for nonproject actions (part D).
For nonproject actions, the references in the checklist to the words "project ", "applicant ", and "property
or site" should read as "proposal ", "proposer ", and "affected geographic area ", respectively.
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Control No.
Epic File No.
Fee $ 325 Receipt No.
ENVIRONMENTAL CHECKLIST
A. BACKGROUND h
1. Name of proposed project, if applicable: PANT i- DUwlmt, t SailTIENtr iNrE21111 IYIEASUei.
WORKpAN)
2. Name of applicant: 13t lfJ (omfl1 _(►AL A- )ra,pL1\W
3. Address and phone number of applicant and contact person: 2, 0, (j ]�� rns ��-35
A'ff!- �lb'fA c 2Lf' PH. 54q I(CtL' L.Ak'ry A -t,Le0 (co �J,A�r)
4. Date checklist prepared: thUVE11\6c 22.4 %yR�
5. Agency requesting Checklist: City of Tukwila
6. Proposed timing or schedule (including phasing, if applicable): 41-N, /2- /V77
T7t,€c oG-el F Al, / f 7
7. Do you have any plans for future additions, expansion, or further activity
related to or connected with this proposal? If yes, explain. /VO
8. List any environmental information you know about that has been prepared, or will
be prepared, directly related to this proposal. grr4 ctgeI2
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.. 41/k
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10. List any government approvals or permits that will be needed for your proposal.
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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 alternatives of your proposal and should not be
summarized here.
17- Ac-ilt/9
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 applica-
tions related to this checklist.
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13. Does the proposal lie within an area designated on the City's Comprehensive Land
Use Policy Plan Map as environmentally sensitive?
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TO BE COMPLETED BY APPLICANT Evaluation for
Agency Use Only
B. ENVIRONMENTAL ELEMENTS
1. Earth
41/1-
a. General description of the site (circle one): Flat,
rolling, hilly, steep slopes, mountainous, other
b. What is the steepest slope on the site (approximate
percent slope)?
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.
d. Are there surface indications or history of unstable
soils in the immediate vicinity? If so, describe.
e. Describe the purpose, type, and approximate quanti-
ties of any filling or grading proposed. Indicate
source of fill.
f. Could erosion occur as a result of clearing,
construction, or use? If so, generally describe.
g. About what percent of the site will be covered with
impervious surfaces after project construction (for
example, asphalt or buildings)?
-4--
h. Proposed measures to reduce or control erosion, or
other impacts to the earth, if any:
2. Air /N
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.
b. Are there any off -site sources of emissions or odor
that may affect your proposal? If so, generally
describe.
c. Proposed measures to reduce or control emissions or
other impacts to air, if any:
3. Water
a. Surface:
1) Is there any surface water body on or in the
immediate vicinity of the site (including year -
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. fji,ik/ira1 IS
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Evaluation for
Agency Use Only
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2) 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. '/ (S - /4.41,nA,r
3) 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 p Ourr,u... 29 i2_,
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4) Will the proposal require surface water
withdrawals or diversions? Give general
description, purpose, and approximate quan-
tities, if known.
5) Does the proposal lie within a 100 -year
floodplain? If so, note location on the site
plan. y4 s
6) Does the proposal involve any discharges of
waste materials to surface waters? If so,
describe the type of waste and anticipated
volume of discharge. f,,A-
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Evaluation for
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b. Ground:
1) Will ground water be withdrawn, or will water be
discharged to ground water? Give general
description, purpose, and approximate quan-
tities, if known. 4/4 Z
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2) Describe waste materials that will be discharged coo
into the ground from septic tanks or other sour- ? w =
ces, if any (for example: Domestic sewage; CO LL;
industrial, containing the following w O`:
chemicals...; agricultural; etc.) Describe the q:
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. N/9-
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. /v/A-
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2) Could waste materials enter ground or/surface
waters? If so,.generally describe. iv
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d. Proposed measures to reduce or control surface, ) co w
ground, and runoff water impacts, if any: N /e-;
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4. Plants /1/4 gym'
a. Check or circle types of vegetation found on the .of
site: W W;
deciduous tree: alder, maple, aspen, other ~ ~'
evergreen tree: fir, cedar, pine, other z
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grass 0 1.
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crop or grain
wet soil plants: cattail, buttercup, bullrush,
skunk cabbage, other
water plants: water lily, eelgrass, milfoil, other
other types of vegetation
b. 'What kind and amount of vegetation will be removed
or altered?
c. List threatened or endangered species known to be on
or near the site.
-8-
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d. Proposed landscaping, use of native plants, or other
measures to preserve or enhance vegetation on the
site, if any:
5. Animals /1/A3-
a. Circle any birds and animals which have been
observed on or near the site or are known to be on
or near the site:
birds: hawk, heron, eagle, songbirds, other:
mammals: deer, bear, elk, beaver, other:
fish: bass, salmon, trout, herring, shellfish,
other:
b. List any threatened or endangered species known to
be on or near the site.
c. Is the site part of a migration route? If so,
explain.
d. Proposed measures to preserve or enhance wildlife,
if any:
Evaluation for
Agency Use Only
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6. Energy and Natural Resources At//r
a. What kinds of energy (electric, natural gas, oil,
wood stove, solor) will be used to meet the
completed project's energy needs? Describe whether
it will be used for heating, manufacturing, etc.
b. Would your project affect the potential use of solar
energy by adjacent properties? If so, generally
describe.
c. 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:
7. Environmental Heath AIR
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.
1) Describe special emergency services that might
be required.
2) Proposed measures to reduce or control environ-
mental health hazards, if any:
-10-
Evaluation for
Agency Use Only
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b. Noise N'n
1) What types of noise exist in the area which may
affect your project (for example: traffic,
equipment, operation, other)?
2) What types and levels of noise would be created
by or associated with the project on a short -
term or a long -term basis (for example: traf-
fic, construction, operation, other)? Indicate
what hours noise would come from the site.
3) Proposed measures to reduce or control noise
impacts, if any:
8. Land and Shoreline Use
a. What is the current use of the site and adjacent
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properties? i'Ou5r?/4 -4..-
b. Has the site been used for agriculture? If so,
describe.
c. Describe any structures on the site. SJOvSr?ziA -L-
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d. Will any structures be demolished? If so, what?
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e. What is the current zoning classification of the
site? J 2.1 'C //it
f. What is the current comprehensive plan designation
of the site? /4_7- /
g. If applicable, what is the current shoreline master
program designation of the site? L4 o- �
h. Has any part of the site been classified as an
"environmentally sensitive" area? If so, specify.
i. Approximately how many people would reside or work
in the completed project? _'`Yfrr
j. Approximately how many people would the completed
project displace? NV.L_
k. Proposed measures to avoid or reduce displacement
impacts, if any:
1. 'Proposed measures to ensure the proposal is com-
patible with existing d projected land uses and
plans, if any: /VP'
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Agency Use Only
9. Housing n,k
a. Approximately how many units would be provided, if
any? Indicate whether high, middle, or low- income
housing?
b. Approximately how many units, if any, would be eli-
minated? Indicate whether high, middle, or low -
income housing.
c. Proposed measures to reduce or control housing
impacts, if any:
10. Aesthetics y /
a. What is the tallest height of any proposed
structure(s), not including antennas; what is the
principal exterior building material(s) proposed?
b. What views in the immediate vicinity would be
altered or obstructed?
c. Proposed measures to reduce or control aesthetic
impacts, if any:
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11. Light and Glare 0
a. What type of light or glare will the proposal
produce? What time of day would it mainly occur?
b. Could light or glare from the finished project be a
safety hazard or interfere with views?
c. What existing off -site sources of light or glare may
affect your proposal?
d. Proposed measures to reduce or control light and
glare impacts, if any:
12. Recreation /0,--
a. What designed and informal recreational oppor-
tunities are in the immediate vicinity?
b. Would the proposed project displace any existing
recreational uses? If so, describe.
c. Proposed measures to reduce or control impacts on
recreation, including recreation opportunities to be
provided by the project or applicant, if any:
Evaluation for
Agency Use Only
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13. Historic and Cultural Preservation 4//4-
a. Are there any places or objects listed on, or pro-
posed for, national, state, or local preservation
registers known to be on or next to the site? If
so, generally describe.
b. Generally describe any landmarks or evidence of
historic, archaeological, scientific, or cultural
importance known to be on or next to the site.
c. Proposed measures to reduce or control impacts, if
any:
14. Transportation %R-
a. Identify public streets and highways serving the
site, and describe proposed accss to the existing
street system. Show on site plans, if any.
b. Is the site currently served by public transit? If
not, what is the approximate distance to the nearest
transit stop?
c. How many parking spaces would the completed project
have? How many would the project eliminate?
-15-
Evaluation for
Agency Use Only
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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. Will the project use (or occur in the immediate
vicinity of) water, rail, or air transportation? If
so, generally describe.
f. How many vehicular trips per day would be generated
by the completed project? If known, indicate when
peak volumes would occur.
g. Proposed measures to reduce or control transpor-
tation impacts, if any:
15. Public Services
AO-
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.
b. Proposed measures to reduce or control direct
impacts on public services, if any.
-16-
Evaluation for
Agency Use Only
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16. Utilities M4
a. Circle utilities currently available at the site:
electricity, natural gas, water, refuse service,
telephone, sanitary sewer, septic system, other.
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.
. Signature
The above answers are true and complete to the best of
my knowledge. I understand that the lead agency is
relying on them to make its decision.
Signature:
Date Submitted: j /—,5 —
PLEASE CONTINUE TO THE NEXT PAGE.
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Agency Use Only
D. SUPPLEMENTAL SHEET FOR NONPROJECT 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 imple-
mented. 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? ///f}
Proposed measures to avoid or reduce such increases are:
2. Now would the proposal be likely to affect plants, ani-
mals, fish, or marine life? j /ij-
Proposed measures to protect or conserve plants, ani-
mals, fish, or marine life are:
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3. How would the proposal be likely to deplete energy or
natural resources?
Proposed measures to protect or conserve energy and
natural resourses are:
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? /, /er
Proposed measures to protect such resources or to avoid
or reduce impacts are:
5. How would the proposal be likely to affect land and
shoreline use, inclduing whether it would allow or
encourage land or shoreline uses incompatible with
existing plans? f✓/
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Evaluation for
Agency Use Only
•
Proposed measures to avoid or reduce shoreline and land
use impacts area:
How does the proposal conform to the Tukwila Shoreline
Master Plan?
6. How would the proposal be likely to increase demands on
transportation or public services and utilities? NIIr
Proposed measures to reduce or respond to such demand(s)
are:
7. Identify, if possible, whether the proposal may conflict
with local, state, or federal laws or requirements for
the protection of the environment.
Evaluation for
Agency Use Only
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8. Does the proposal conflict with policies of the Tukwila
Comprehensive Land Use Policy Plan? If so, what poli-
cies of the Plan? pill-
Proposed measures to avoid or reduce the conflict(s)
are:
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TO BE COMPLETED BY APPLICAN1
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
aforegoing items of the Environmental Checklist. This
information provides a general overall perspective of the
proposed action in the context of the environmental infor-
mation provided and the submitted plans, documents, suppor-
tive information, studies, etc.
1. What are the objective(s) of the proposal?
CiL,N UA OF PC81.5 — 5EE Ai 4crreO
. What are the alternative means of accomplishing these
objectives?
3. Please compare the alternative means and indicate the
preferred course of action: n,f
-22-
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Agency Use Only
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4. Does the proposal conflict with policies of the Tukwila
-Comprehensive Land Use Policy Plan? If so, what poli-
cies of the Plan? iv /Pt
Proposed measures to avoid or reduce the conflict(s)
are:
- 2 3 -
Evaluation for
Agency Use Only
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