"Harvey's Lake Borough is Committed to Eradicating the Algae Bloom Threat and Improving the Lake Ecosystem."
HARVEY'S LAKE WATER IMPROVEMENT PROJECT
Client / Owner
Borough of Harvey's Lake, Pennsylvania
Stormwater Solutions Source (S3)
Princeton Hydro LLC
July 6, 2016 – December 14, 2016
The Borough of Harvey’s Lake, Pennsylvania is rich in history dating back to its discovery during the Revolutionary War. The majesty of the 660 acre glacial lake is an undeniable sight but since the Borough’s founding in 1968, a green tide has crept in to threaten the whole lake ecosystem. As Harvey’s Lake Borough has grown over the years, more pollution has sullied the lake in the form of contaminated stormwater runoff carrying a substantial non point source nutrient pollutant load heavy in nitrogen and phosphorus. High phosphorus levels can lead to frequent algae blooms, with studies by the Pennsylvania Department of Environmental Protection showing that a 10% phosphorus increase often leads to a 50% increased chance in causing a eutrophic state within Harvey’s Lake.
In an attempt to correct this issue, Borough officials installed a new sewer system around the lake which vastly improved water quality but only hindered the frequency of algae blooms. They still plagued the lake periodically and in 2014 a dangerous new threat, the invasive aquatic species hydrilla appeared invading large portions of the lake, starving aquatic life of vital oxygen Therefore, Borough officials implemented a multi phase water quality improvement plan starting with the installation of a Nutrient Separating Baffle Box® hydrodynamic separator at the lake boat launch in 2016. By utilizing the NSBB™ along with a newly established storm drain system, the health of the Harvey’s Lake ecosystem and lakeside residents will only continue to improve while also stunting the massive hydrilla invasion.
Planning for Pollution Prevention
Phase 1 of the Harvey’s Lake Borough stormwater improvement plan broke ground in December of 2016. The comprehensive project is based on a NPS 319 project targeting the recreation area of Harvey’s Lake to improve water quality and prevent further non point source pollution. The determination of the excavation area for the NSBB manufactured treatment device (MTD) was coordinated through the Pennsylvania Fish & Boat Commission and Stormwater Solution Source (S3). The area was selected primarily due to its heavy public recreation use from fishermen, swimmers and boating enthusiasts. The PA Fish and Boat Commission building resides at the boat launch and incorporates a substantial parking lot where a vast amount of surface runoff directly impacts the lake from the heavily trafficked area. The subsequent installation of the MTD went smoothly and is essential to inflowing stormwater treatment.
Boat Launch NSBB™ Diminishes Algae Growth
The direct treatment of stormwater emptying at the PA Fish & Boat Commission Boat Launch is now filtered via an NSBB which was installed on December 14, 2016. Developed by Suntree Technologies Inc®, an Oldcastle Infrastructure™ company, the NSBB is a hydrodynamic separator unit which specializes in online sediment capture without the typical headloss and sediment scouring. It’s patented lidded screens help to prevent nutrient leaching and static water from turning septic due to prolonged contact with trash and debris. It also includes a SkimBoss® floating skimmer unit to prevent debris from passing through the vault during high flows and a media based StormBoom™ that absorbs hydrocarbons.
Prior to delivery, Suntree personnel were on site at an Oldcastle Infrastructure facility to install the NSBB internal components including the turbulence deflectors and stabilization components for the basket system. The treatment unit does not require confined space entry, effectively saving time, effort and a great deal in upkeep costs. The delivery and installation of the vault structure took only a day to complete as a joint effort between Machiesky Construction, Princeton Hydro LLC, Oldcastle Infrastructure, Stormwater Solution Source (S3) and Suntree Technologies. The Harvey’s Lake NSBB unit vastly improves the water quality of runoff flowing in the system and prevents any pollution of trash, sediment, hydrocarbons and minimizes nutrients from reaching the lake. Harvey’s Lake Borough is committed to water quality improvement and to eradicating both the Hydrilla and algae growth threatening the ecosystem. This proactive effort will ensure a decline in invasive species growth and an overall increase in community health.
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