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Phase II Site Assessment <br /> Alden Park Area <br /> Chevron Pipe Line Company <br /> Tracy, California <br /> TABLE 7 <br /> SUMMARY OF GROUNDWATER CHEMICAL TEST RESULTS - ORGANIC COMPOUNDS <br /> WELLS <br /> Adjacent to Field <br /> PARAMETERS UNITS Up-gradient Concrete Slab Down-gradient Blank <br /> MW-2 MW-3 MW-3 MW-1/KJC <br /> •VOLATILE ORGANIC dup <br /> COMPOUNDS <br /> EPA Method 624) (ppb) None None None None (3) <br /> Detected Detected Detected Detected(4) <br /> SEMI-VOLATILE <br /> ORGANIC COMPOUNDS <br /> EPA Method 625 <br /> Phenanthrene (ppb) <1 11 17 <1(4) <1 <br /> Naphthalene (ppb) <1 22 38 <1 <1 <br /> 2,4-dimethylphenol (ppb) <1 <10 14 <1 <1 <br /> OIL b GREASE (mg/1) 6 170 140 11 <5 <br /> NOTES: <br /> (1) All compounds for which positive results were received are listed. <br /> (2) Analyses performed by ANATEC Laboratories, Inc. , Santa Rosa, CA. <br /> (3) Chloroform was detected in the field blank at 20 ppb. No other Volatile Organic Compounds <br /> were detected. <br /> (4) EPA Methods 624 and 625 were performed on groundwater samples from MW-1/KJC in 1986 by <br /> Kennedy/Jenks/Chilton. No volatile or semi-volatile compounds were detected. <br />