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COMMERCIAL TESTING 8c ENGINEERING CO. <br />GENERAL OFFICES: 1919 SOUTH HIGHLAND AVE.. SUITE 210-B, LOM BARD, ILLINOIS 60148 • TEL: 630953-9300 FAX: fi30-953-9306 <br />~t ,90a® r®~SGS <br />v Member of the SGS Group (SOCiAtA GAnerale tle Surveillance) <br />Committed TD Excellence ADDRESS ALL <br />May 23, 2001 <br />TWENTYMILE COAL COMPANY <br />29515 ROUTT COUNTY ROAD 27 SAMPLE ID: 1SP (STRIP PIT) <br />Oak Creek CO 80467 SAMPLE DATE: 05/02/01 <br />SAMPLE TIME: 11:45 <br />FIELD TEMP: 7.4 <br />FIELD pH: 8.17 <br />FIELD EC: 1690 <br />Kind of Sample WATER <br />Sample taken at EMPIRE <br />Sample taken by TWENTYMILE COAL COMPANY <br />Date Received May 3, 2001 <br />Analyeie report no. 72-451129 <br />PARAMETER RESIILTS AMTS METHOD <br />Total Suspended <br />Solids, TSS 9 mg/L SM2540-D <br />Fe (D) 530 ug/L EPA 200.7 <br />Z>_nc, Zn (D) 10 ug/L EPA 200.7 <br />(D) = Dissolved <br />DETECTION <br />LIMIT <br />5 <br />10 <br />1 <br />(RESPONDENCE TO: <br />4665 PARIS STREET <br />SUITE B-200 <br />DENVER, CO 80239 <br />TEL: (303) 373-4772 <br />FAX: (303)373-4791 <br />www.comteca.com <br />ANALYZSD <br />DATE/TIME <br />OS-04-2001/1015 <br />OS-23-2001/1230 <br />OS-23-2001/1230 <br />Method Reference: "Standard Methods for the Examination of Water and Wastewater," <br />18th Edition, 1992; APHA-AWWA-WEF. <br />ANALYST <br />JN <br />JE <br />JE <br />"Methods for the Determination of Metals in Environmental Samples," <br />EPA/600/4-91/010, June 1991. <br />Respectfully submitteQ <br />• <br />COMMERCIAL TESTING 8 ENGINEERING CO. <br />/ L' <br />penver Laboratory <br />OVER 40 BRANCH LABORATORIES STFiATEGICALLV LOCATED IN PRINCIPAL COAL MINING ARFJIS, TIDEWATER AND GREAT LAKES PORTS, AND RIVER LOADING FACILRIES <br />irg nal Watermarked For Your Protection TEAMS AND CONDfIIDN$ ON flEVERSE <br />