HomeMy WebLinkAboutUtilities 2012-04-24 Item 2C - Discussion - Soils Reclamation Facility UpdateCity of Tukwila
Jim Haggerton, Mayor
INFORMATIONAL MEMORANDUM
TO: Mayor Haggerton
Utilities Committee
FROM: Bob Giberson, Public Works Directo
BY: Pat Brodin, Operations Manager
DATE: April 20, 2012
SUBJECT: Soils Reclamation Facility Update
ISSUE
New requirements regarding Vactor truck waste disposal and Soils Reclamation facilities.
BACKGROUND
Tukwila cleans approximately 19,000 lineal feet of storm pipe and 1,000 catch basins each year. On an average
week the crew removes 5 to 10 yards of material from the system that must be disposed of properly. The extracted
sediment contains a fair amount of water that needs to be decanted. Past City disposal practices included dumping
the waste from the Vactor truck on a large City owned lot where the excess water infiltrated into the ground and the
sediment was allowed to dry out. Once dry, the sediment was tested and then loaded into dump trucks and disposed
of at an approved disposal site.
The Department of Ecology (DOE) has notified the City that this practice is no longer acceptable due to concerns
over ground water contamination. The DOE recommended that the City either construct a Soils Reclamation Facility
(decant facility) that allows the decanted water to be discharged into the sewer system or decant at an existing
approved Soils Reclamation Facility.
DISCUSSION
Developing a City of Tukwila Soils Reclamation Facility as listed in the 2012 CIP, page 150, will require the
acquisition of land and construction of improvements to the site. The cost of the land and improvements is currently
estimated to be $2.8 million with a minimum of several years to complete the project (the 2012 CIP has $2.0 million
listed in beyond). Another future project, the proposed joint City Maintenance Facility (CIP page 72), would work best
as a combined project with the Soils Reclamation Facility for economy of scale, operational efficiencies, and a
maximum benefit cost ratio.
For the interim, the City will contract a Use Agreement with King County as there is a DOE approved King County
Soils Reclamation Facility in Renton that the City will be able to utilize.
FINANCIAL IMPACT
Costs for disposal are estimated to be $440.00 per load and with a projected 180 loads annually, the cost could be
$79,200.00 per year and we currently have $30,000.00 budgeted. This estimate does not include the added staff and
equipment costs associated with transporting the material to the King County facility in Renton.
RECOMMENDATION
For Information only.
Attachments: Photo
2012 CIP pages 150 and 72
W: \PW Eng \OTHER \Pat Brodin \Info Memo Decant Waste Disposal 4- 6- 12.docx
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CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2012 to 2017
PROJECT: Soils Reclamation Facility Project No. 99441202
DESCRIPTION: Construct soils reclamation facility to handle, treat, dispose and /or reuse non - hazardous street sweepings
and catch basin cleanings, etc. (formerly named DrainageNactor Waste Facility).
JUSTIFICATION: To meet State regulations, City needs facilities to treat & dispose of waste materials resulting from cleaning/
maintenance activities, including street sweepings and vactor truck wastes.
STATUS: Due to Renton's Strander Project, current temporary site will have to be relocated in 2012.
MAINT. IMPACT: Reduce maintenance costs for waste disposal.
COMMENT: May be combined with future location of City Maintenance Facility.
FINANCIAL Through Estimated
in $000's)
2010 2011 2012
2013
2014
2015
2016 - 2017
BEYOND TOTAL
EXPENSES
Design
49
40
89
Land (R/W)
561
500
1,061
Const. Mgmt.
40
40
Construction
40
800
840
TOTAL EXPENSES
610
0
40
0
0
0
0
0
1,380
2,030
FUND SOURCES
Awarded Grant
0
Proposed Grant
0
Mitigation Actual
0
Mitigation Expected
0
Utility Revenue
610
0
40
0
0
0
0
0
1,380
2,030
TOTAL SOURCES
610
0
40
0
0
0
0
0
1,380
2,030
* Note: Site Location is still under consideration.
2012 - 2017 Capital Improvement Program 150
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CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2012 to 2017
PROJECT: City Maintenance Facility Project No. 90630213
DESCRIPTION; Construct a new City maintenance and operations center combining all operational functions efficiently
at one location. Facility will also include a Police Records Center.
Existing operations and maintenance areas have inadequate space. Current area for staging dirt and
JUSTIFICATION: vactor materials is only temporary. Sell both Minkler and George Long to acquire the real estate to build
an equipment operations center that meets current codes.
STATUS: Analyzing space requirements and determining an appropriate site.
MAINT. IMPACT: Improves efficiency for maintenance operations.
COMMENT:
FINANCIAL Through Estimated
(in $000's)
2010 2011 2012
2013
2014
2015
2016
2017
BEYOND TOTAL
EXPENSES
Engineering
1,000
1,000
Land (R/W)
5,000
5,000
Const. Mgmt.
500
500
Construction
3,500
3,500
TOTAL EXPENSES
0
0
0
0
0
0
0
0
10,000
10,000
FUND SOURCES
Awarded Grant
0
Proposed Sale of Land
5,000
5,000
Mitigation Actual
0
Mitigation Expected
0
City Oper. Revenue
0
0
0
0
0
0
0
0
5,000
5,000
TOTAL SOURCES
0
0
0
0
0
0
0
0
10,000
10,000
Site location to be determined.
2012 - 2017 Capital Improvement Program 72
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