Well No. 5 has experienced measurable levels of tetrachloroethene (PCE) since 1991. The level of PCE generally ranged between 0.4 and 0.9 parts per billion (ppb) during the years 1991 to 1997. In this same period there were five (5) readings greater than 1.0 ppb. Starting in early 1997, the level of PCE has been in excess of the State limit for this contaminant, ranging between 1.2 and 1.5 ppb.
In recognition of the need to maintain water quality and deliver safe water to its residents, Borough officials undertook the planning, funding and design of an air stripping facility at Well No. 5 to eliminate the PCE contaminant from the Borough's water supply.
| 1997 | Planning and selection of air stripping as the cost-effective solution. |
| June 1998 | Enter into agreement with NJDEP for funding of project. |
| Summer/Fall 1998 | Engineering design and State approvals |
| January 1999 | Receive bids |
| February 1999 | Award of contract to Navka Construction ($481,000) |
| April 1999 | Start of construction |
| December 1999 | Complete construction |
| January 2000 | Start-up and testing of the new equipment |
| February 16, 2000 | Air stripper placed into service |
Well No. 5 has a capacity of approximately 1,000,000 gallons per day. The air stripper has been designed to provide removal of volatile organic compounds from a flow rate of 800 gallons per minute, with an efficiency of 99 percent. The total output from Well No. 5 can be treated with the air stripper.
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