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Project 113-13 <br /> October 12,1993 <br /> Page 3 <br /> The samples were analyzed for TPH-gasoline, and BTEX using EPA Methods 8015 <br /> and 8020, respectively. A copy of the laboratory reports and Chain of Custody form <br /> are attached to this report <br /> Table 2 <br /> Cheaper! #76 <br /> 890 North Main Street, Manteca, California <br /> Groundwater Sample Analysis Results* <br /> TPH-g and BTEX <br /> Samples Collected on December 21, 1993 <br /> Sample # TPP- Benzene Toluene Eth lbenzene Xylenes. <br /> MW-1 ND < 50 ND <0.5 ND <0.5 ND <0.5 ND <0.5 <br /> MW-2 ND < 50 ND <0.5 ND <0 5 ND <0.5 ND <0.5 <br /> MW-3 ND < 50 ND <0.5 ND <0 5 ND <0.5 ND <0.5 <br /> MW-4 ND < 50 ND <0.5 ND <0.5 ND <0.5 ND <0.5 <br /> * Sample results are in µg/L or parts per billion. <br /> The sample analyses show that TPH as gasoline, benzene, toluene, ethylbenzene, <br /> and xylenes were not detected. None of these compounds were detected in <br /> September, 1993, or July, 1993 In March, 1993, during the first quarter of <br /> monitoring, xylene was measured at 1.2, 1.1, and 0 96 ppb in three of the wells (MW- <br /> 1, MW-2, and MW-3). Toluene was present (1.2 ppb) in MW4 All measurements <br /> were below regulatory action levels. <br /> IM Future Directions <br /> Copies of this report should be forwarded to the San Joaquin County Department of <br /> Health Services and to the Central Valley Regional Water Quality Control Board <br /> The addresses are: <br /> Regional Water Quality Control Board Department of Environmental Health <br /> Central Valley Region San Joaquin County <br /> 3443 Routier Road <br /> Sacramento, CA 95827-3098 Stockton, CA <br /> Sincerely, <br /> PARKER ENVIRONMENTAL SERVICES <br /> James D Parker James A. Jacobs, R.G #4815 <br /> President Principal Geologist <br /> Parker Environmental Services 190 East 7th Street Pittsburg CA 94565-6116 <br /> Phone (510) 439-1024 Fax (510) 439-2566 <br />