Remediation in Olean Well Field
1、Site location、description and History.
The Olean well Field Superfund site is located in the eastern portion of the city of Olean and west and northwest of the towns of Olean and Portville in Cattaraugus County, New York.
Superfund Site Identification Number: NYD980528657
Operable Unit 02 and Operable Unit 03
The site is characterized by contaminated groundwater encompassing an area approximately 800 acres underlying the city of Olean, the Town of Olean and the Town of Portville, and by contaminated soil at certain locations in the city and town of Olean. The site is approximately 65 miles southeast of Buffalo, New York, and seven miles north of the New York/Pennsy/Vania border. The…show more content… These contaminations of the areas were discovered in 1981. The public wells draws water from Olean creek, and they were constructed in the 1970s to relieve the situation of water shortage for a surface water treatment plant. However, excessive leaves of trichloroethylene (TCE) were discovered in public wells in late 1980, and so the use of the wells was discontinued. Some suspected contaminations have been identified. After a supplemental RI/FS study to investigated thirteen properties for the presence of contamination at four of the properties as the main sources of VOC and TCE contamination to the former Loohn’s Dry cleans.
There have three public water supply wells were constructed in the late 1970s to provide water for the city of Olean, New York. In 1981, these wells were found to contain trichloroethylene (TCE) and other chlorinated organic solvents at concentrations exceeding federal maximum contaminant levers (MCLs). As a result, these wells were closed. Then the site was included on the National Interim priorities list on the first NPL on September 9, 1983. Between 1981 and 1985, some separate federal-, state- and PRP-led investigations were conducted to find the sources of the contamination to the ground water and evaluate the nature and extent of groundwater contamination at the site.
On September 24, 1985, the first operable unit ROD for the site issued by the EPA was documented. These including: 1) installation of