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DEPARTMENT OF THE ARMY k'F, <br /> i: SH ARPE ARMY OEF+QS <br /> ttl <br /> rl LATHROP, CALIFORNIA 95331 <br /> REPLY TO <br /> ATTENTION OF <br /> SDSSH-EM 20 October 1989 <br /> MEMORANDUM FOR U.S. Army Corps of Engineers, SHAD Project Office, <br /> Bldg. S-271 , Lathrop, CA 95331 <br /> SUBJECT: Contract No. DACA 05-88-C-0170, Automated Well Monitoring, Sierra- <br /> Misco, Inc. <br /> 1. Reference letter SDSSH-EM/16 October 1989. (Copy enclosed) <br /> 2. Reword paragraph 1, to read: <br /> Based on all the information available to this office, we have concluded <br /> that the Methylene Chloride, Dichlorodifluoromethane, and <br /> Trichlorofluoromethane contamination is due to the well monitoring system <br /> (equipment and/or cable) . <br /> 3. Request equipment and/or cable so that we can have our contract <br /> laboratory perform analysis on it. <br /> - Wet Extraction Procedure <br /> - EPA Method 601/602 Compounds <br /> 4. Recommend that contractor perform analysis, or submit certification that <br /> equipment and materials used are not leaching out the stated contaminants.', <br /> 5 . POC: Mr. Peter Kalush, telephone 982-2094 , or Mr. John Guzman, telephone <br /> 982-2093. <br /> FOR THE COMMANDER: <br /> Encl ABEL W. HAINES, P.E . <br /> as Environmental Program Manager <br />