Point Source Pollution - ANSWERAn object or place where you can ID where the point at which
contamination is taking place (industry, pipes, etc)
Structural Methods - ANSWER-Constructed or built
-You can visibly see it
Non-Point Source Pollution - ANSWERYou cannot clearly ID where the pollution is coming from
-Runoff from several different points
*Biggest problem with runoff and storm water management
Storm Water Control Measures (SCM) - ANSWER*Vary in scale (from a development site to a
watershed), timing in the runoff regime (placed at different points from sheet flow to concentrated
flow), objectives (runoff storage, conveyance, infiltration, treatment, detention).
*May be either structural or non structural
-Watershed approach
-Green Infrastructure
-Neighborhood design
, Watershed approach - ANSWER-A holistic approach
-Wide range of strategies:
1)Structural
2)Non-structural
-Examples:
*Maryland Stormwater
Management Program
*Washington Stormwater
Management Program
Maryland Stormwater Management Program - ANSWEREmphasized runoff flow control
-2000 the MDE had proposed new regulations to promote environmentally sustainable techniques
for controlling the quantity and quality of runoff from new development
-Maryland Stormwater Design Manual: establishes specific design criteria and procedures for
localities
-Program includes initiatives by giving credits for such methods in these sizing calculations for
required water quality, recharge, and channel protection volumes
Washington Stormwater Management Program - ANSWER-Created in response to 1987s Puget Sound
Water Quality Management Plan, which called on the agency (WDOE) to develop guidance for
stormwater quality improvement
-The Puget Sound Manual updated in 2005 to apply to all of Western Washington
-Provides 10 minimum requirements for new and redevelopment
-Green stormwater infrastructure
Onsite Neighborhood Controls: Conveyance - ANSWERMoving runoff where you want it/Helping
water to be transported
-Effectively assists natural drainage to move water into storage and infiltration control measures
-Swales: filter impurities' vegetated channels that drain stormwater to natural channels
High density neighborhoods - ANSWER-Argued to be much better than low density
-Smaller the lots, lower the extent of impervious surfaces
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