Anybody know about Stormwater sampling (NPDES)??
Answer:
In general, there are three types of stormwater monitoring activities: municipal, industrial and construction, which is usually a special permit under industrial activities.
The EPA delegates rulemaking to state agencies, so there is some variance in details on state regulations. Contact your state agency having jurisdiction (Environmental Management/Protection) and they will give you detailed information. Here is a link to Georgia DNR Permit: (NOTE: it is a fairly large pdf file – if you are on dial-up you may wait a while for it to load):
http://www.gaepd.org/files_pdf/techguide...
Presumably, you are asking about stormwater monitoring for construction activities. Typically, you will see something like:
Grab samples collected either manually or automatically within 45 minutes of the accumulation of the minimum amount of rainfall (or when discharge begins, if this occurs more than 45 minutes after the required rainfall accumulation) during normal business hours, defined as Monday through Friday 8:00 AM to 5:00 PM and Saturday 8:00 AM to 5:00 PM.
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