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Page 1 of 1 <br /> Garrett Backus [E ] <br /> From: Garrett Backus [EH] <br /> Sent: Monday, March 15, 2010 12:10 PM <br /> To: 'derricj@herricksteel.com' <br /> Subject: Blaster Dust analysis <br /> Hi Derric, <br /> I reviewed the analysis done by FGL Environmental and have the following comments: <br /> 1. The FGL Environmental Stockton laboratory does not have ELAP certification to do hazardous waste analysis <br /> according to online certification information at http_//www.ch.ca,cov/certlic/labs/Pages/ELAPaspx . They are <br /> certified to do wastewater and drinking water. Therefore, these results cannot be accepted by the Environmental <br /> Health Dept. <br /> 2. To show that the blaster dust is nonhazardous waste, testing must be done by an ELAP certified lab with <br /> hazardous waste certification. In addition, further testing must be done beyond the TTLC(mg/kg)testing. <br /> 3. The TTLC (mg/kg)analysis shows that the Chromium, Copper and Nickel levels are high enough to require <br /> STLC testing. The Selenium result was ND but the detection limit was 25 mg/kg which is well above the STLC <br /> limit of 1.0 mg/I. Selenium will also require STLC testing or TTLC testing with a lower detection limit. <br /> 4. TTLC analysis was not done for Chromium (VI). <br /> 5. The TTLC analysis shows that the Chromium levels are high enough to require TCLP analysis. <br /> 6. The sieve test analysis shows that 15%of the sample was smaller than 100 microns. This test will be <br /> accepted by the Environmental Health Department. <br /> Garrett Backus, REHS <br /> San Joaquin County Environmental Health Department <br /> 600 E. Main Street <br /> Stockton, CA 95202 <br /> telephone: (209) 468-2986 <br /> fax: (209) 468-3433 <br /> email: gbackus@sjeehd.com <br /> 3/15/2010 <br />