MTBE

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Warehousing Facility

ISOTEC CASE STUDY 1

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Site Location: Union, NJ
Contamination: BTEX (28,161 ppb); Methyl t-butyl ether (7,240 ppb) in groundwater.
Geology: Unconfined silty layer.
Area Treated: Approximately 5,000 sq. ft between 0 - 20 ft bgs.
Effectiveness:  Each compound was treated to below its NJDEP standard; site received No Further Action letter.

Former Maintenance and Repair Garage

ISOTEC CASE STUDY 11

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Site Location: West Chester, NY
Contamination: BTEX (4,869 ppb) and MTBE (451 ppb).
Geology: Very fine to coarse sand and gravel underlain by fractured bedrock. Water table is approximately 3-10 ft bgs.
Area Treated: - Two separate areas: 2,400 sq ft BTEX plume and a downgradient 17,600 sq ft MTBE plume targeting the 11 - 20 ft bgs interval.
Effectiveness:  66% reduction of total BTEX and 62% of MTBE in hot spots, and below NYSDEC cleanup criteria in downgradient area. NYSDEC issued No Further Action letter.

Former Distribution Terminal

ISOTEC CASE STUDY 63

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Site Location: New Jersey
Contamination: Methylene Chloride; BTEX; TCE; MTBE; TCA
Geology: Fractured Bedrock
Area Treated: Area of concern extends vertically from approximately 17 to 50 feet bgs over three bedrock fractures.
Effectiveness:  Substantial GW VOC reduction from 90% to 99% achieved in injection area monitoring wells. Estimated 851 lbs of COC mass including trapped DNAPL mass treated.