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NYC-WTC_000208683

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NYC 9/11 Public Portal Document

4

■ I A F MORETRENCH AMERICAN CORPORATION www.moretrench.com

100 stickle Avenue P.O. Box 316 Rockaway, NJ. 07866 March 11,2002 Tel: (973) 627-2100 Fax: (973) 627-3950 / 627-6078 Serial Letter 01-4906-69

VIA FACSIMILE (3wfc) (212) 640-9207

Mr. Brian Peters Total # of Pages: 7 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 complete results of the analysis of the water samples taken from the WTC site on March 4, 2002. MTBE levels for the sump discharge (B-6 30 hp sump pump) and dewatering wells (Main Discharge) are 31 ppb and 2.8 ppb respectively.

We are also forwarding a copy of the table which tracks MTBE concentration for all of the water sample testing which has been performed on the site.

Very truly yours, MORETRENCH AMERICAN CORPORATION

John F. Donohoe President cc: Billy Klingler, MTA

MORETHENCH SERVICES....

• BORED PILES & SHAFTS • CUTOFF/CONTAINMENT WALLS • DEWATERING • GROUND FREEZING • GROUNDWATER REMEDIATION • INDUSTRIAL INFRASTRUCTURE • LANDFILL, GAS/LEACHATE SYSTEMS • SOIL MODIFICATION/SOIL STABILIZATION

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CITY_21MC100_007210627 NYC-WTC_000208683

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NYC-WTC_000208683Source: NYC Law Department, mirrored locally

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Water analysis results, WTC site, Feb 2002

NYC-WTC_000186635

Letter transmitting water sample analysis results from February 18, 2002, including MTBE concentration levels for sump and dewatering discharges.

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