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600 N Holt Road Project No.06304-01 Page 18 <br /> Table 4.Comparison of Reporting Limits to San Francisco Bay Regional Water Quality Control Board <br /> Screening Levels-MCL Priority <br /> Minimum Detection Reporting Limit I ESLs <br /> CAS No. Analyte Limit(µg/L) T (µg/L) (MA) <br /> McCampbell Analytical Laboratories <br /> OCPs 8081A <br /> 72-54-8 DDD 0.0023 0.01 0.031 <br /> 72-55-9 DDE 0.0025 0.01 0.046 <br /> 50-29-3 DDT 0.0043 0.01 0.23 <br /> 309-00-2 Aldrin 0.0016 0.005 0.00092 <br /> 319-84-6 a-BHC 0.0025 0.01 <br /> 319-85-7 b-BHC 0.0012 0.005 <br /> 319-86-8 d-BHC 0.0012 0.005 <br /> 58-89-9 g-BHC 0.0019 0.02 <br /> 12789-03-6 Chlordane(Technical) 0.026 0.1 0.01 <br /> 5103-71-9 a-Chlordane 0.0019 0.05 <br /> 5566-34-7 g-Chlordane 0.0022 0.05 <br /> 60-57-1 Dieldrin 0.0029 0.01 0.00071 <br /> 959-98-8 Endosulfan 1 0.0022 0.02 <br /> 33213-65-9 Endosulfan II 0.0049 0.02 <br /> 1031-07-8 Endosulfan sulfate 0.0026 0.05 <br /> 72-20-8 Endrin 0.0034 0.01 2 <br /> 7421-93-4 Endrin aldehyde 0.0036 0.05 <br /> 53494-70-5 Endrin ketone 0.0039 0.05 <br /> 76-44-8 IHeptachlor 0.0028 1 0.01 0.01 <br /> 1024-57-3 Heptachlor epoxide 0.003 0.01 0.01 <br /> 118-74-1 Hexachlorobenzene 0.0066 0.5 1 <br /> 77-47-4 Hexachlorocyclopentadiene 0.0052 1 <br /> 72-43-5 Methoxychlor 0.0048 0.1 30 <br /> 8001-35-2 Toxaphene 0.12 0.5 3 <br /> Notes: <br /> µg/L-micrograms per Liter <br /> ESLs-San Francisco Bay Regional Water Quality Control Board(2019 Rev.2)MCL Priority <br /> Final data will be checked for consistency with the tables provided above. If any reporting limit is <br /> found to exceed that listed, and the difference is significant in light of the toxicity criteria for the <br /> compound in question, the data will be approximately quantified. If possible, the sample will be <br /> reanalyzed with acceptable reporting limits. <br /> 4.5 Investigation Derived Wastes (IDW's) <br /> Soil cuttings generated during auguring will be containerized in United States Department of <br /> Transportation (DOT) approved drums, or placed on and covered with plastic sheeting, and stored <br /> onsite in an area inaccessible to the public. Soil cuttings from the groundwater grab sample location <br /> are not anticipated to have been exposed to the pesticide containing rinse water. Typically, the <br /> stockpiled soil is characterized by collecting and analyzing composite samples from the stockpile. <br /> Petralogix can recommend an appropriate method for disposition of the cuttings based on the <br /> analytical results.Disposal will be the responsibility of the client. <br /> 4.6 Permits <br /> Petralogix will obtain drilling permits from San Joaquin County Environmental Health Department <br /> (SJCEHD) to advance boreholes as needed.Any boreholes 5 feet bgs and/or where groundwater is <br /> encountered will be abandoned with grout according to SJCEHD standards. <br /> Petralogix Engineering,Inc. <br /> 26675 Bruella Road,Galt,Ca 95632 <br /> (209)-400-5729 <br /> www.petralogix.com Iwo) <br />