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Water quality summary for WTC sumping and dewatering

Machine-extracted title · confidence 95%

Summary table of Chlorodifluoromethane levels in sump and well water from the World Trade Center site covering March to May 2002.

NYC-WTC_000182177–000182184
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NYC 9/11 Public Portal Document

BOVIS LEND LEASE 7/9/02 World Trade Center - Sumping/Dewaterlng MTA Job #01-4906 Water Quality MTBE Concentration

West St. Greenwich St. Dewatering Sump Dewatering Laboratory Date Of Sample Discharge (pob) Discharge (ppb) Independent Testing Labs 12/13/01 7 65 12/17/01 9 97 12/24/01 21 109 12/31/01 18 200

STL Laboratories 1/9/02 19 94

1/11/02 11 25 1/14/02 12 99 1/18/02 8 91 1/21/02 9 88 1/25/02 8 100 1/28/02 15 140

2/1/02 41 170 2/4/01 56 150 2/8/02 120 2/11/02 11 25 2/15/02 2 63 2/18/02 2 81 2/22/02 6 48 2/25/02 4 49 3/1/02 21 3/4/02 3 31

3/11/02 4.7 45 3/18/02 2.6 32 3/25/02 3.1 24

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NYC-WTC_000182178Source: NYC Law Department, mirrored locally

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