Southmoreland High School Parking Lot Stormwater Improvements

Southmoreland High School Parking Lot Stormwater Improvements

The project consisted of stormwater improvements in two separate parking lot locations within the Southmoreland High School campus.  The intent of the project is to reduce volume of runoff and mitigate pollutant loading that is being directly discharged to Stauffer Run.

Project Area No.1 Pervious Asphalt Pavement Lot – The project excavated out and replaced an existing asphalt and densely compacted gravel parking lot and replaced it with a pervious asphalt paved parking lot for the use of the Southmoreland High School maintenance department and for the use of emergency vehicles and bus parking during stadium events.

• The parking area is capable of collecting and storing 5,300 Cu. Ft. of runoff for runoff events in excess of 1” of rainfall.
• There are an average of nine events per year in excess of one inch.
• This results in the removal of 47,700 Cu. Ft. per year of runoff from Stauffer Run.
• Runoff is stored and allowed to infiltrate slowly back into the ground and stream.
• Anticipated Pollutant Reduction of 85% TSS, 85% Phosphates, and 30% of the Nitrates.

Project Area No.2 Pervious Asphalt Pavement Lot & Rain Garden – The project excavated out and replaced an existing asphalt parking lot and replaced it with a pervious asphalt paved parking lot for the use of the Southmoreland High School students and included the installation of a rain garden to treat runoff prior to discharge.

• The parking area is capable of collecting and storing 5,000 Cu. Ft. of runoff for runoff events in excess of 1” of rainfall The Rain Garden can retain an additional 1,000 Cu. Ft. of runoff for runoff events in excess of 1” of rainfall.
• There are an average of nine events per year in excess of one inch.
• This results in the removal of 54,000 Cu. Ft. per year of runoff from Stauffer Run.
• Runoff is stored and allowed to infiltrate slowly back into the ground.
• Anticipated Pollutant Reduction of 85% TSS, 85% Phosphates, and 30% of the Nitrates.

MARKETS:

• Institutional

SERVICES:

• Civil – Municipal Engineering
• Civil – Site Engineering
• Landscape Architecture & Planning