Division of Water - Alaska Department of Environmental Conservation
555 Cordova Street
Anchorage, AK 99501
Fax Number: 907-269-3487
Email Address: email@example.com
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