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Puget Sound Stormwater BMP Cost Database - Sound Stormwater BMP Cost Database . Prepared for . Washington State Department of Ecology . ... Constructed Wetland Grassed Swale Green

Apr 17, 2018

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  • TECHNICAL MEMORANDUM

    Puget Sound Stormwater BMP

    Cost Database

    Prepared for

    Washington State Department of Ecology Environmental Assessment Program

    P.O. Box 47600 Olympia, Washington 98504-7600

    Prepared by

    Herrera Environmental Consultants 2200 Sixth Avenue, Suite 1100

    Seattle, Washington 98121 Telephone: 206.441.9080

    January 4, 2012

    dole461Typewritten TextSupplement to: Ecology Publication No. 13-03-009, "Case Study for Applying SUSTAIN to a Small Watershed in the Puget Lowland" at https://fortress.wa.gov/ecy/publications/SummaryPages/1303009.html

    dole461Typewritten Text,

    https://fortress.wa.gov/ecy/publications/SummaryPages/1303009.html

  • Note: Some pages in this document have been purposely skipped or blank pages inserted so that this document will copy correctly when duplexed.

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    i

    Contents

    Introduction and Purpose ................................................................................................................ 1

    Bioretention..................................................................................................................................... 2

    Projects .................................................................................................................................... 2 Unit Costs ................................................................................................................................ 2 Total Bioretention Cost ............................................................................................................ 3

    Cistern ............................................................................................................................................. 4

    Projects and Products ............................................................................................................... 5 Total Cistern Cost .................................................................................................................... 5

    Constructed Wetland ....................................................................................................................... 6

    Projects .................................................................................................................................... 6 Unit Costs ................................................................................................................................ 6 Total Constructed Wetland Cost .............................................................................................. 7

    Grassed Swale ................................................................................................................................. 7

    Projects .................................................................................................................................... 7 Unit Costs ................................................................................................................................ 8 Total Grassed Swale Cost ........................................................................................................ 9

    Green Roof ...................................................................................................................................... 9

    Projects .................................................................................................................................... 9 Unit Costs .............................................................................................................................. 10 Total Green Roof Cost ........................................................................................................... 11

    Infiltration Trench ......................................................................................................................... 11

    Projects .................................................................................................................................. 11 Unit Costs .............................................................................................................................. 12 Total Infiltration Trench Cost ................................................................................................ 12

    Porous Pavement ........................................................................................................................... 13

    Projects .................................................................................................................................. 13 Unit Costs .............................................................................................................................. 13 Total Porous Pavement Cost .................................................................................................. 15

    Rain Barrel .................................................................................................................................... 15

    Projects and Products ............................................................................................................. 16 Total Rain Barrel Cost ........................................................................................................... 17

    Vegetated Filter Strip .................................................................................................................... 17

    Projects .................................................................................................................................. 17 Total Vegetated Filter Strip Cost ........................................................................................... 17

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    Wet Pond ....................................................................................................................................... 18

    Projects .................................................................................................................................. 18 Unit Costs .............................................................................................................................. 19 Total Wet Pond Cost .............................................................................................................. 20

    Next Steps ..................................................................................................................................... 21

    References ..................................................................................................................................... 21

    Attachment 1 Master Puget Sound BMP Cost Database Attachment 2 Cost Request Forms Submitted for the Puget Sound BMP Cost Database

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    Tables

    Table 1. Bioretention project information................................................................................... 3 Table 2. Bioretention unit cost information. ............................................................................... 4 Table 3. Bioretention project cost information. .......................................................................... 4 Table 4. Cistern project and product information. ...................................................................... 5 Table 5. Cistern cost information. ............................................................................................... 5 Table 6. Constructed wetland project information...................................................................... 6 Table 7. Constructed wetland unit cost information. .................................................................. 6 Table 8. Constructed wetland project cost information. ............................................................. 7 Table 9. Grassed swale project information................................................................................ 8 Table 10. Grassed swale unit cost information. ............................................................................ 8 Table 11. Grassed swale project cost information. ....................................................................... 9 Table 12. Green roof project information. .................................................................................. 10 Table 13. Green roof unit cost information................................................................................. 10 Table 14. Green roof project cost information. ........................................................................... 11 Table 15. Infiltration trench project information. ....................................................................... 12 Table 16. Infiltration trench unit cost information. ..................................................................... 12 Table 17. Infiltration trench project cost information. ................................................................ 13 Table 18. Porous pavement project and product information. .................................................... 14 Table 19. Porous pavement unit cost information. ..................................................................... 15 Table 20. Porous pavement project cost information. ................................................................ 15 Table 21. Rain barrel project and product information. .............................................................. 16 Table 22. Rain barrel cost information. ...................................................................................... 17 Table 23. Vegetated filter strip project information. ........................................