Compost-Based Stormwater Best Management Practices
[Pages:24]Compost-Based Stormwater Best Management Practices
Using Compost to Improve Stormwater Management and
Erosion Control On Roadsides
Chris Newman US EPA Region 5
Chicago, IL
Compost-Based BMPs
6 Compost-based stormwater best management practices (BMPs) control both stormwater quantity and quality
6 They meld two important EPA initiatives
5 Resource Conservation Challenge (RCC) 5 National Pollutant Discharge Elimination System
(NPDES)
6 EPA developed fact sheets for three compostbased BMPs--compost blankets, compost filter berms, and compost filter socks
5 See EPA Stormwater Phase II (NPDES) Menu of
BMPs
Resource Conservation Challenge
6 Focus of the RCC is to increase waste recycling and reuse in the U.S.
5 One focus of the RCC is to increase recycling of
municipal solid waste (MSW)
~ Goal: Increase recycling of MSW to 35 percent by 2008
~ Goal: Increase recycling of MSW to 40 percent by 2011
6 Organic materials (green yard waste and food waste) are a focus area to increase recycling of MSW
5 Increasing high-value markets for compost is one
way to support increased recycling of organic waste
National Pollutant Discharge Elimination System
6 NPDES regulates the quantity and quality of stormwater discharges to waters of the U.S.
5 Control of stormwater quality is a particular
concern at construction sites
~ Large disturbed areas may contribute sediment and other pollutants to stormwater
5 Municipal separate storm sewer systems (MS4s)
and construction site operators must control stormwater quantity and quality from construction and post-construction activities
RCC and NPDES Working Together
6 Compost-based BMPs bring these two programs together
6 Benefits to NPDES program
5 Compost BMPs help control sheet-flow runoff 5 Compost provides effective stormwater treatment
6 Benefits to RCC program
5 High-value markets can drive demand for more
compost
5 Increased recycling of organic waste will help
increase the national MSW recycling rate
Benefits of Compost in Stormwater BMPs
6 Compost retains a large volume of water
5 Prevents or reduces rill erosion 5 Reduces runoff volume 5 Promotes establishment of vegetation
6 Compost improves downstream water quality by retaining/adsorbing pollutants
5 Heavy metals, nitrogen, phosphorus, oil and
grease, fuels, herbicides, and pesticides
5 Nutrients and pollutants are decomposed by
naturally occurring microorganisms
Benefits of Compost in Stormwater BMPs, cont.
6 Compost improves soil structure and nutrient content
5 Reduces need for chemical fertilizers, pesticides,
and herbicides
6 Compost-based BMPs remove as much or more sediment and pollutants from stormwater as traditional perimeter controls, such as silt fence
5 Allow a larger volume of clear water to pass
through
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