Alaska

William Ashton, Storm Water and Wetlands Manager
Division of Water - Alaska Department of Environmental Conservation
555 Cordova Street
Anchorage, AK 99501
Telephone: 907-269-6283
Fax Number: 907-269-3487

Email Address: william.ashton@alaska.gov

2015 Multi-Sector General Permit for Storm Water Discharges Associated with Industrial Activity (2015 MSGP, AKR060000), effective 4/1/2015 through 3/31/2020.

7.1.3 Measurable Storm Events.

All required monitoring must be performed on a storm event that results in an actual discharge from the facility (“measurable storm event”) that follows the preceding measurable storm event by at least 72 hours (three days). The 72-hour (three-day) storm interval does not apply if the permittee is able to document that less than a 72-hour (three-day) interval is representative for local storm events during the sampling period. In the case of snowmelt, the monitoring must be performed at a time when a measurable discharge occurs at the facility.

Magnitude: results in actual discharge

Interval between storms: 72 hours, unless less than that is representative

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