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3m+ <br /> 2302 LARKIN CIRCLE <br /> SPARKS,NEVADA 89431-6587 <br /> P.O.BOX 50730 SIERRA CHEMICAL CO. <br /> SPARKS,NEVADA 89435-0730 <br /> TELEPHONE(775)358-0888 <br /> FAX(775)358-0987 March 1, 2006 <br /> E-MAIL siemachem@gbis.com <br /> Via Fax (209) 463-3433 <br /> Kasey Foley, Lead Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue, 3'd Floor <br /> Stockton, CA 95202-2708 <br /> RE: Soil sample test program for area of anomalous chromium analysis- <br /> Dear Ms. Foley, <br /> As confirmation of our recent telephone conversation the following is my understanding <br /> of the procedure that will be followed to further test the area. <br /> 1. The area is currently flooded with water due to the recent rains. Following the <br /> area drying to the point it can be sampled we will contact you to check on your <br /> availability to be present during the sampling. Sampling will not take place <br /> without your presence. <br /> 2. A grid will be established and distinct samples will be collected and split. <br /> 3. One split will be provided to you. Sierra Chemical will provide the other split <br /> under proper chain of custody documentation to a California Certified lab for <br /> CAM 17 metals analysis. <br /> 4. If any of the samples test above the permissible limits for any metal a STLC <br /> analysis will be obtained for that metal. <br /> 5. If any areas are above California allowable limits a remediation plan will be <br /> developed and agreed upon prior to any removal. <br /> We will keep you informed on the moisture conditions of the site so this work can take <br /> place as soon as possible. <br /> If you have any questions or a different understanding of our conversation, please <br /> contact me. I can be reached at (775) 358-0888. Thank you for your help in this matter. <br /> SPARKS ® BATTLEMOUNTAIN ® STOCKTON <br />