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Dewatering General Permit (DGP) for Massachusetts & New Hampshire

The Dewatering General Permit expires on May 20, 2020. All new dewatering activities eligible for the DGP must submit a complete NOI by May 8, 2020 in order to gain authorization before the permit expires. After this date, all dewatering activities must submit an NOI for coverage under the Remediation General Permit (RGP).

NOI ALERT: Due to widespread telework being implemented at the EPA Region 1 office in response to the COVID-19 outbreak, processing of hardcopy NOIs and other mail may be delayed due to limited staff availability in-office. At this time we encourage the submittal of NOIs via email to to speed processing times.

Final Dewatering General Permit (DGP)

The Notice of Availability of the Final NPDES General Permit for Dewatering Activity Discharges in Massachusetts (MAG070000) and New Hampshire (NHG070000) was published in the Federal Register on April 20, 2015.

This General Permit replaces the Dewatering General Permit (DGP) that expired on September 30, 2013. The Final General Permit provides coverage for facilities with construction dewatering of groundwater intrusion and/or storm water accumulation from sites less than one acre and short-term and long-term dewatering of foundation sumps into waters of the Commonwealth of Massachusetts and the State of New Hampshire. The Final permit establishes permit eligibility conditions, notice of intent requirements, effluent limitations, standards, prohibitions, and best management practices. The eligibility requirements for coverage under the general permits are discussed in detail under Part 3 of the draft permit. The reader is strongly urged to go to that section to determine eligibility.

Owners and/or operators of facilities with dewatering discharges, including those currently authorized to discharge under the expired General Permits, will be required to submit a Notice of Intent (NOI) to be covered by the General Permit to both EPA-New England and the appropriate state agency. EPA and the State will review the NOI and the facility will receive written notification from EPA stating whether permit coverage and authorization to discharge under one of the general permits is approved.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

EPA Contacts

Michelle Vuto (, 617-918-1222
Newton Tedder (, 617-918-1038

State Contacts

Jennifer Wood (

Hayley Franz (, 603-271-0671

Notices of Intent

Notices of Intent (NOI) will be posted on this page for a minimum of 7 days after EPA receives them. Please contact Michelle Vuto if you have any questions regarding NOIs. See the table below for a chronological listing of NOIs. Older NOIs are listed in the Dewatering General Permit (DGP) NOI archive.

Notices of Intent: Dewatering General Permit
City / Town, State Site / Address Permit Number Date Terminated Date Issued Date Posted
Boston, MA 425 Border Street (PDF) (58 pp, 7.5 MB) MAG070472   01/08/2020 12/27/2019
Scituate, MA Hatherly Country Club (PDF) (41 pp, 7.9 MB) MAG070471   10/10/2019 10/01/2019
Durham, NH F107 Transmission Line Replacement (Durham) (PDF) (63 pp, 11 MB) NHG070047 02/12/2020 06/27/2019 06/18/2019
Boston, MA Boston College - Brighton Fields Athletic Complex (PDF) (83 pp, 5.9 MB) MAG070470   06/03/2019 05/28/2019
Boston, MA Kenmore Square North - Beacon Building (PDF) (254 pp, 8.7 MB) MAG070469   05/24/2019 05/16/2019
Brookline, MA 1080 Beacon Street (PDF) (60 pp, 7.2 MB) MAG070468 07/18/2019 04/19/2019 04/09/2019
Dorchester, MA 233 Hancock Street (PDF) (43 pp, 5.8 MB) MAG070467 06/28/2019 04/16/2019 04/05/2019
Plymouth, MA Harbourtown - 150 Water Street (PDF) (92 pp, 9.2 MB) MAG070466   03/04/2019 02/21/2019
Framingham, MA PW-388 Marble Street Improvement Project (PDF) (37 pp, 2.8 MB) MAG070465   02/19/2019 02/08/2019
Newington, NH F107 Transmission Line Rebuild - Splice Vault Installation at Gundalow Landing (PDF) (80 pp, 13.3 MB) MAG070464 02/12/2020 02/11/2019 02/01/2019
Babson Park, MA Babson Commons at Horn Library (PDF) (69 pp, 4.5 MB) MAG070463   12/20/2018 12/11/2018
Mashpee, MA 59 Nick Trail (PDF) (65 pp, 4.5 MB) MAG070462 02/04/2019 11/29/2018 11/21/2018
Boston, MA The Elizabeth Stone House (PDF) (83 pp, 5.1 MB) MAG070461 11/01/2019 11/26/2018 11/14/2018
Brockton, MA Brockton Enterprise Garage (PDF) (33 pp, 4.1 MB) MAG070460 06/26/2019 11/20/2018 11/08/2018
Weymouth, MA Smelt Brook Culvert (PDF) (53 pp, 7.3 MB) MAG070459   11/08/2018 11/01/2018
Weymouth, MA Smelt Brook Culvert (PDF) (53 pp, 6.7 MB) MAG070458 11/08/2018 09/20/2018 09/11/2018
Worcester, MA Whitla Drive Pump Station (PDF) (39 pp, 4.3 MB) MAG070457   03/05/2018 02/23/2018
Wrentham, MA Route 1 (Washington Street) (PDF) (85 pp, 32.7 MB) MAG070456   02/13/2018 02/05/2018
Boston, MA Chestnut Hill Gatehouse No. 1 (PDF) (12 pp, 3.9 MB) MAG070455   02/05/2018 01/29/2018
Concord, MA Umbrella Community Arts Center (PDF) (67 pp, 6.2 MB) MAG070454   12/12/2017 12/01/2017
Nantucket, MA Cumberland Farms Store #2280 (PDF) (93 pp, 8.4 MB) MAG070453 01/08/2018 10/10/2017 09/25/2017
Easton, MA Easton Mobile Homes Sewer Repair (PDF) (47 pp, 10.1 MB) MAG070452   08/23/2017 08/11/2017
Buckland, MA Gardner Falls Hydroelectric Facility (PDF) (10 pp, 1.6 MB) MAG070450   07/11/2017 06/13/2017
Rowe, MA Bear Swamp Substation (PDF) (8 pp, 7.5 MB) MAG070449   05/10/2017 03/08/2017
Boston, MA Salerno Place (PDF) (5 pp, 970 K) MAG070448     03/07/2017
Boston, MA 46 - 88 Wareham Street (PDF) (19 pp, 18.5 MB) MAG070445   03/31/2017 01/18/2017
Boston, MA 110 Broad Street (PDF) (20 pp, 3.1 MB) MAG070439 10/18/2017 03/31/2017 01/06/2017
South Boston, MA I-90 Tunnel Remediation (PDF) (64 pp, 5.7 MB) MAG070444   01/26/2017 12/15/2016
Cambridge, MA 121-139 First Street Dewatering Project (PDF) (181 pp, 6.2 MB) MAG070443   01/26/2017 11/29/2016
Milford, MA 445 Main Street (PDF) (34 pp, 7 MB) MAG070441   03/31/2017 11/15/2016
Cambridge, MA EQR - 249 Third Street, LLC (PDF) (72 pp, 19.4 MB) MAG070442 10/30/2018 02/02/2017 11/02/2016
City / Town, State Site / Address Permit Number Date Terminated Date Issued Date Posted