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1. What element is targeted by water quality criteria? Phosphorous, it indicates pol-
lution by bonding with other
pollutants.
2. At what % impervious cover are streams substan- 25%
tially affected?
3. what is the site-based load limit for water quality? 0.41 lbs/acre/yr total phos-
phorous
4. Virginia Runoff Reduction Method- method of load load calculations based on land
calculations cover type and soil type.
5. what must happen to potentially harmful sheet flow Must be diverted to stormwa-
runoff? ter conveyance system.
6. SWM ponds must be able to convey water safely up must be able to safely convey
to what level storm event? up to a 100 yr storm.
7. Define LDA Land disturbing activity; any
man-made change to the
land surface that potentially
changes its runott characteris-
tics; includes clearing, grading,
and excavation.
8. What size LDA must comply with stormwater man- anything of 1 acre or more, or
agement regulation? in CPBA areas? 2500 ft^2 in CPBA areas; may
be more stringent locally.
9. what are some activities exempt from SWM regula- mining, agriculture, sewer dis-
tions? charges, local reclamation pro-
grams, routine maintenance of
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