Excavation Dewatering General Permit

Excavation Dewatering General Permit NOI Flow Chart

Start

Do you have excavation dewatering activities located within 1,500 feet of a permit defined “DEC-identified contaminated site¹”?

Discharge to:

Waters of the U.S.

Land

Yes

Do you have excavation dewatering activities located within 1,500 feet of a “contaminated groundwater plume¹” identified by Contaminated Sites?

Yes

Submit an NOI and a certified BMP Plan with required information in Part 2 of the permit to receive discharge authorization under the Excavation Dewatering Permit.

Yes

Do you have construction related activities with a land disturbance of one acre or greater with a stormwater discharge to waters of the U.S.?

Do you have excavation dewatering discharges to waters of the U.S.?

Yes

Construction stormwater coverage is required under the Construction General Permit (CGP) which will also authorize the discharge of uncontaminated non-turbid groundwater including all dewatering activities.

No NOI submittal required. Dewatering discharge to the land is authorized in accordance to Part 4.0, Control Measures; Part 5.0, Monitoring Requirements; and Part 6.0 Reporting and Record keeping of the Excavation Dewatering General Permit.

1. A contaminated site or groundwater plume with an “Active” or “Cleanup Complete-Institutional Controls” status identified by DEC Contaminated Sites Program. For assistance in locating mapped contaminated sites or listing of groundwater plumes see the DEC Contaminated Sites Search webpage.