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Water analysis results, WTC site, May 2002

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Letter transmitting water sample analysis results from May 2002, including MTBE and chlorodifluoromethane levels at the World Trade Center site.

NYC-WTC_000182122
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NYC 9/11 Public Portal Document

MORETRENCH AMERICAN CORPORATION www.moretrench.com

100 stickle Avenue May 31, 2002 P.O. Box 316 Rockaway, N.J. 07866 Tel: (973) 627-2100 Serial Letter 01-4906-123 Fax; (973) 627-3950 / 627-6078

VIA FACSIMILE (3wfc) (212) 640-9202 Total # of Pages: (q Mr. Brian Peters Bovis Lend Lease LMB, Inc. 200 Park Avenue New York, NY 10166

RE; World Trade Center Dewatering Contract No. 20020004649 MTA Job 01-4906 Water Analyses

Dear Brian:

Attached find results of the analysis of the water samples taken from the WTC site on May 22, 2002. MTBE level for the sump discharge {B-6 30 hp sump pump) was 49 ppb and for the dewatering wells (Main Discharge) was 2.1 ppb.

Chlorodifluoromethane was 74 ppb in the sump discharge and 12 ppb in the dewatering well discharge.

We are also fonvarding a copy of the tables which track MTBE and Chlorodifluoromethane concentrations for all of the water sample testing which has been performed on the site.

Very truly yours, MORETREI IPORATION

Jnhn'F. Donohoe President cc: Billy Klingler, VTA

900/T00[^ NVDiMawv HONaalaaow oeec i29 Cie xva eo’ci soos/tc/so CITY_21MC100_002779187

NYC-WTC_000182122

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NYC-WTC_000182122Source: NYC Law Department, mirrored locally

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