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TABLE 1 Composite Soil Analytical Results Summary of Detected Compounds 24550 Hansen Road Tracy, California Project No. 33113-013018.02 Sample TPH (mg/kg) OCPs(mg/kg) Metals(mg/kg) Sample Sample Identification Depth(feet Date bgs) TPH-d 4,4'-DDD 4,4'-DDE Heptachlor Chlordane alpha- gamma- Arsenic Chromium Lead Mercury Epoxide chlordane chlordane Comp A 1.0'-1.5' 5/24/2013 ND ND 0.0083 0.0035 ND 0.0041 0.0045 4.4 27 9.3 0.023 Comp B 1.0'-1.5' 5/24/2013 ND ND 0.014 ND 0.081 0.0076 0.0077 ND 26 8.7 0.029 Comp C 1.0'-1.5' 5/24/2013 ND ND 0.015 0.002 0.052 0.0069 0.0064 4.0 27 8.5 0.019 Comp D 1.0'-1.5' 5/24/2013 ND 0.0026 0.016 0.0033 0.044 0.0053 0.0058 4.7 27 8.5 0.032 Comp E 1.0'-1.5' 5/24/2013 ND ND 0.0054 ND ND ND ND ND 23 7.6 0.017 Comp F 1.0'-1.5' 5/24/2013 ND ND 0.0081 ND ND ND ND 4.0 23 7.6 0.019 Comp G 1.0'-1.5' 5/24/2013 1.5 ND 0.0078 ND ND ND ND 4.2 23 7.6 0.018 Comp H 1.0'-1.5' 5/24/2013 2.1 ND 0.012 ND ND ND ND 4.5 27 8.2 0.018 Comp 1 1.0'-1.5' 5/24/2013 4.6 ND 0.0036 ND ND 0.0019 0.0011 4.4 27 13 0.041 Comp J 1.0'-1.5' 5/24/2013 1.3 ND ND ND ND ND ND 4.7 32 9.2 0.022 Comp K 1.0'-1.5' 5/24/2013 ND ND ND ND ND ND ND 5.0 34 9.8 0.047 Comp L 1.0'-1.5' 5/24/2013 ND ND ND ND ND ND ND 5.0 33 10 0.023 RWQCB ESL Residential 83 2.4 1.7 0.013 0.44 0.44 0.44 0.39 750 80 6.7 DTSC CHHSL Residential - 2.3 1.6 0.13 0.43 0.43 0.43 0.07 100,000 80 18 Notes: Results reported in milligrams per kilogram(mg/kg) All TPH-mo and TPH-g analyzed by EPA Method 8015B and 8260B,respectively,were under the reporting limits(Practical Quantitation Limit) All BTEX/MTBE analyzed by EPA Method 8260B were under the reporting limits All other OCPs analyzed by EPA Method 8081A were under the reporting limits All other metals analyzed by EPA Methods 6010B/7471A were under the reporting limits,except for barium,which was detected at concentrations ranging from 250 to 320 mg/kg. These values are below the residential ESL of 750 mg/kg. ND=not detected above laboratory reporting limit(Practical Quantitation Limit) --=Not Analyzed;ESL and/or CHHSL Not Established RWQCB ESL=Regional Water Quality Control Board Environmental Screening Level for Residential land use(RWQCB,Table A,February 2013). DTSC CHHSL-Residential values from Table 1 of the California Human Health Screening Levels(CHHSLs)California Environmental Protection Agency,Use of CHHSLs in Evaluation of Contaminated Properties--January 2005(updated October 2010). TPH=total petroleum hydrocarbons(as diesel,TPH-d;motor oil,TPH-mo;gasoline,TPH-g) BTEX=benzene,toluene,ethylbenzene and total xylenes OCPs=Organochlorine Pesticides Bolded detections denote concentrations above ESL and/or CHHSL