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-16 — M-6C2 <br /> Manufacturer <br /> ♦ PPG <br /> -20 ■ DOW <br /> M-31C1 ♦ ICI <br /> Q StanChem <br /> M-6Ci <br /> E -24 EW-1 <br /> U *AEU-3 <br /> -28 :♦ <br /> if <br /> -32 ♦♦ ♦ ■ <br /> -4 -2 0 2 4 6 <br /> 637CI (permill VSMOC) <br /> Notes: <br /> "Manufacturer"refers to TCE Manufacturers <br /> Squares, diamonds and triangles represent the stable carbon and chloride isotope ratios (613C and 631CI, <br /> respectively)reported for TCE samples obtained from the different manufacturers and reported in Wilson <br /> (2010). <br /> a Black dots represent the stable carbon and chloride isotope ratios for groundwater samples collected by <br /> ECM in 2"d and 31 quarters of 2010 and analyzed by ZymaX Laboratories of Escondido, California. <br /> Isotope ratios are reported in permill notation relative to internationally defined standards (VPDB for carbon <br /> m and VSMOC for chlorine)in accordance with EPA(2008) <br /> a' <br /> N <br /> Abbreviations: STABLE CARBON AND CHLORINE ISOTOPE <br /> " VPDB=Vienna Pee Dee Belemnite COMPOSITION OF TCE IN GROUNDWATER SAMPLES <br /> y <br /> VSMOC=Vienna Standard Mean Ocean Chloride Former Nestle Facility and Surrounding Area <br /> Ripon, California <br /> n <br /> M <br /> W <br /> By:AF Date:01/26/2011 Project No. 98370.006 <br /> m <br /> AMEC Geomatrix Figure B.4-4 <br />