QUESTIONS AND SOLUTIONS GRADED A+
⩥ To be subject to NPDES rules, stormwater must: Answer: be in a
discernible conveyance
⩥ Definitions of waters of the US Answer: All waters used in interstate
or foreign commerce, including those subject to tidal flows
o All interstate waters, including interstate wetlands
o All INTRAstate lakes, rivers, streams (intermittent also), mudflats,
sand flats, wetlands, sloughs, prairie potholes, wet meadows, playa lake,
or natural ponds that the destruction of which would affect
interstate/foreign commerce including those which:
Could be used for recreational or other purposes
From which shellfish or fish could be retrieved and sold
Could be used for industrial purposes
o All impoundments of water defined by waters of the US by the above
o Tributaries of the waters defined above
o The territorial sea
o Wetlands adjacent to any of the waters defined above
⩥ Beneficial Uses definition Answer: Uses necessary for the survival of
and well-being of people, plants, and wildlife
,⩥ Water quality standards definition Answer: state or tribal requirements
that define the water quality goals of a lake stream or other wateerbody
by designation the benefical uses and setting criteria to protect those
uses
⩥ Section 303d Answer: est a process for states, territories, and tribes to
i.d. impaired waters, also referred to as water quality limited
⩥ TMDL Answer: id's the amount of a specific pollutnant that may be
dicharged to a water body, states are responsible for implementing
⩥ Waste load allocations Answer: allocations of pollutant loadings to
point sources
⩥ TMDL Implementation Answer: Define waste load allocation,
develop implementation plan to connect allocations and permits,
translate allocations to permit conditions.
⩥ Origin of NPDES stormwater regs Answer: NURP studies showed
stormwater had many of the same qualities of commercial, industrial
areas
, ⩥ NPDES Phase I and II regs implemented via Answer: General permits
for a group of similar dischagers such as consutruction industry,
industrial, utilities
Individual permits for a single entity, facility or project
⩥ Phase I NPDES Permits ID'd as: Answer: Industrial activity
Construction activity <5 acres
Cities over 100k population
⩥ Phase II NPDES Permits ID'd as: Answer: Construction activity 1 - 5
acres
Cities 10k - 100k population
commercial, retail, light industrial, institutional
updated industrial and const. general permits
⩥ Phase II impletmented MS4 requirements Answer: SWMP with 6
MCMs
Develop measurable program goals
Evaluate effectivness
⩥ 6MCMs Answer: Public education/outreach
Public participation and involvement
IDDE