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k" KLEINFELDER November 8, 1990 File: 24-2009-01 Mr. David Bates Marley Cooling Tower P.O. Box 2412 Mission, KS 66201 SUBJECT: Lysimeter Sampling Marley Cooling Tower Stockton, California Dear Mr. Bates: Enclosed are the results of the October 17, 1990, lysimeter sampling event. Eleven samples were collected and submitted for analysis for copper, arsenic, trivalent chromium, hexavalent chromium, total chromium, and nitrates. Results of the analyses, along with the appropriate reporting limits, are presented on the laboratory data sheet. Three spike samples and five duplicate samples were analyzed as part of the laboratory QA/QC program. The laboratory data sheets and chain-of-custody form are included at the end of this report. Table 1 presents the lysimeter stations, sample identification, and the field observations for this sampling event. During this last lysimeter sampling round, Kleinfelder's field geologist noted several lysimeters that had cracked or broken neopprene lines. It is Kleinfelder s understanding that the lysimeters will continue to be sampled on a regular basis; therefore, we will make the necessary repairs during the next sampling round scheduled for January 17, 1990. Should you have any questions, please do not hesitate to call us. Sincerely, KLEINFELDER, INC. AVS Alex M. Rich ards� Staffeo/logis`="�E'```"�� Stephen S. Boll, P.E. Senior Engineer AMR:SSB:mg Enclosure F15-90-95 Copyright 1990 Kleinfelder, Inc. Unauthorized use or copying of this document is strictly prohibited. See "Application for Authorization to Use" located at the end of this document if use or copying is desired by anyone other than the client and for the project identified above. KLEINFELDER 9795 Business Park Drive, Sacramento, CA 95827 (916) 366-1701