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Mr. Mike Infurna Page 3 of 4 Analytical Results Soil Steles The two soil samples were analyzed for VOCs by EPA Method 8260. Results were non-detect for all compounds in both samples. Analytical results are summarized in Table 1. Laboratory data sheets and chain of custody documentation are included in Attachment B. Waste Samples Based upon the knowledge of characteristics gained from the previous analysis of the septic contents, the liquid samples were analyzed for ignitability by EPA Method 1010 and for VOCs by EPA Method 8260. The sludge samples were analyzed for VOCs only. The flash point of each of the liquid samples was found to be greater than 100'C, indicating that the material is not a hazardous waste by the characteristic of ignitability. Each of the liquid samples contained detectable concentrations of toluene, ranging from 1,400 parts per billion (ppb) in DMI to 390,000 ppb in DM6. In addition to toluene, the contents of drums DM2 and DM3 contained minor detectable levels of tetrachloroethene (PCE) and xylenes. Drum DM3 also contained a detectable concentration of trichloroethene (TCE). Both of the sludge samples were found to contain detectable levels of toluene (maximum concentration of 2,500 parts per million), PCE and xylenes. Analytical results are summarized in Table L Laboratory data sheets and chain of custody documentation are included in Attachment B. Conclusions • The previous drug-lab operation at the property did not create a condition of soil contamination. No threat to groundwater exists. • The septic tank contents (both in the tank and drummed) are not hazardous waste. The material is not a listed hazardous waste. The material is not a characteristic hazardous waste because it does not exhibit the characteristic of ignitability and, by knowledge of characteristics, does not have the characteristics of corrosivity, reactivity or toxicity. With respect to the toxicity characteristic, neither toluene nor xylenes have numerical criteria under 22 CCR., 66261.24. The TCLP threshold limits for PCE and TCE are 700 ppb and 500 ppb, respectively, and the STLC threshold limit for TCE is 204 ppm. These limits were not exceeded in any of the liquid samples and, because of the dilution inherent in the TCLP and STLC analysis of solids, the sludge samples could not exceed the limits. The material would not be toxic if analyzed by aquatic bioassay according to 22 CCR, 6626124. The threshold for the toxicity characteristic by bioassay is an LCso with fathead minnows, rainbow