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| | ATSDR - PHA - Rockaway Borough Wellfield, Rockaway Borough, Morris County, New Jersey |
 | | Because of yet unidentified source(s) of TCE and PCE in ground water, municipal wells of the Borough of Rockaway have been contaminated sometime prior to 1980, when this well water was found to contain high concentrations of these volatile organic compounds (VOCs). |
 | | Since the installation of the activated carbon treatment system, elevated concentrations of TCE and PCE were detected in the water supplied by the distribution system only once, because the activated carbon in the treatment unit was not replaced on time (i.e., the breakthrough of the contaminant occurred). |
 | | The upper aquifer is composed of sand and gravel with layers of till, and the lower aquifer is composed of a mixture of metamorphic, igneous, and metasedimentary bedrock. |
| www.atsdr.cdc.gov /HAC/PHA/rockaway/rockaway.html (3228 words) |
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