Pleasant Hills Borough Wet Weather Facilities

In 2013, LSSE finalized a feasibility study for the Borough of Pleasant Hill’s Wet Weather Flow Strategy. Among other items, this document evaluated alternatives to maintain the Borough’s peak flow rate within 11.56 mgd during wet weather events. The most cost-effective alternative identified for a 2-year; 24-hour design storm was source fl ow reduction in the Sunrise area of the Borough. The project involves installation of approximately 13,000 linear feet of new parallel sanitary sewer and conversion of the existing sanitary sewer to a localized storm/groundwater sewer. Also, a 500,000-gallon equalization facility was constructed at the Lewis Run Pump Station. In preparation of this report and alternatives
analysis, LSSE performed H&H modeling, nighttime flow isolation studies and cost-effectiveness analysis.

LSSE completed design, permitting and construction phase services for completion of the equalization facility and a sewer replacement project to meet the source flow reduction requirements. The equalization facility is located in a commercial area next to a busy state roadway, design included these considerations and was constructed.

LSSE facilitated a Multi-Municipal Ownership, Operations and Maintenance Agreement, including provisions for capital cost apportionment and operating cost sharing. LSSE has also facilitated an Operations and Maintenance Agreement with PHA such that PHA can operate the facility integral with an
expanded PHA STP to reduce systemwide SSO frequencies.

System improvements from this project resulted in reduced overflows at the Lewis Run Pump Station. This project is part of a negotiated Consent Order and Agreement with PADEP.

MARKETS:

Utilities & Infrastructure

SERVICES:

Civil – Environmental Engineering
- Wastewater Facilities Engineering

Pleasant Hills Borough Wet Weather Facilities