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Williamsport Area Joint MS4s Joint Chesapeake Bay Pollutant Reduction Draft Plan

The City of Williamsport and Loyalsock Township (Applicants) discharge stormwater to surface waters located within the Chesapeake Bay Watershed and are therefore regulated by the National Pollutant Discharge Elimination System Individual Permit to Discharge Stormwater from Small Municipal Separate Sewer Systems. The Applicants submitted Municipal Separate Storm Sewer System (MS4) individual permit applications and a Joint Pollutant Reduction Plan (PRP) to the Pennsylvania Department of Environmental Protection (PADEP) on October 1, 2018, and the Applicants have determined that the PRP should be amended so that it is an implementable plan with confidence that the proposed best management practices (BMPs) meet PADEP’s credit eligibility guidelines. This Joint Chesapeake Bay Pollutant Reduction Plan (CBPRP) was developed in accordance with both individual permit requirements, and it documents how the Applicants intend to achieve the pollutant reduction requirements listed in the PADEP Municipal MS4 Requirements Table1 and the NPDES Stormwater Discharges From Small Municipal Separate Storm Sewer Systems Pollutant Reduction Plan (PRP) Instructions.

The City of Williamsport (City) and Loyalsock Township (Township) have approximately 9,792 acres of urbanized area within municipal boundaries and an additional 287 acres area that drains to stormwater systems within the City and Township’s municipal boundaries. The total 10,079 acres of urbanized area and contributing stormsewershed area are considered to be the planning area for the Applicants’ Joint PRP.  Loyalsock Township is in the Millers Run, Mill Creek-West Side of Loyalsock Creek, Little Bear Creek -Loyalsock Creek, and Lycoming Creek-West Branch of Susquehanna River HUC-12 watersheds.  Williamsport City is in the Millers Run, Lycoming Creek, and Quenshukeny Creek HUC-12 watersheds.

Please see below to review the plan documents.

Comments may be submitted to:

Jon Sander, PE
City Engineer

City Clerk Office
City of Williamsport
245 West Fourth Street
Williamsport, PA 17701

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