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v J <br /> Cc t� <br /> Department of Toxic Substances Control HML No.: 960778 <br /> Hazardous Materials Laboratory To: 960800 <br /> 2151 Berkeley Way, CA 94704 <br /> LABORATORY REPORT <br /> Collector's Name: Nancy Lancaster Auth. No.: HMM3119 <br /> Site or Location: Advanced Metal Plating Activity: SEB <br /> 4431 Giammecchini Date Sampled: 1/24/97 <br /> Stockton Date Received: 1/27/97 <br /> Analytical Soil or sludge samples is digested with 3% sodium carbonate-2% sodium hydroxide <br /> Procedure Used: solution over a hot plate with constant stirring. Digest is filtered through a 0.45 micron <br /> filter, cooled & pH adjusted to pH 7 with conc. HNO3. Liquid sample &filterate is <br /> reacted with 1,5 diphenylcarbazide and hexavalent chromium is determined by <br /> colorimetric method by using spectrophotometer at 540nm. Results are in mg/L & mg/Kg. <br /> Reference: EPA Method 7196 & 3060A <br /> Analysis Results: <br /> HML Collector's Type of Cr VI <br /> Number: Sample No.: Sample: <br /> 960778 NKL 001 LIQUID <1.00 <br /> 960785 NKL 008 LIQUID 90300 <br /> 960787 NKL 010 LIQUID 83.1 <br /> 960788 NKL 011 LIQUID 27.4 <br /> 960789 NKL 012 LIQUID <0.01 <br /> 960791 NKL 014 LIQUID <0.50 <br /> 960793 NKL 016 LIQUID <0.50 <br /> 960795 NKL 018 SLUDGE <2.00 <br /> 960799 NKL 022 SOIL 736 <br /> Signatures: <br /> 7aida R. Ilejay Date Milad Iskander, Supervisor Date <br /> dhemist <br /> p-zl c4v 311,17-7 <br /> to <br />