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Dog Kennel Building—Soil Suitability Study Page 8 of 13 <br /> Our Project Number: NA157000G <br /> June 2,2015 <br /> 13.5 mg/L-NO3 (3 mg/L-N). Areas having 24.75 mg/L-NO3 (5.5 mg/L-N) or more are those in <br /> which nitrate concentrations may be increasing (Hull, 1984). <br /> DBCP is a nematocide and soil fumigant for vegetables and grapes. It is thought to cause <br /> health problems consisting of kidney damage, liver damage, and cancer. The use of DBCP was <br /> discontinued in 1979. EDB was used in gasoline to prevent lead deposits and build up. It was <br /> also used in pesticides and fumigant. Exposure to EDB is linked to many adverse health effects <br /> stemming from organ damage to cancer. <br /> Agricultural activities, industrial activities, and the use of septic systems in the area should be <br /> considered potential groundwater contamination sources. The concerns for groundwater <br /> contamination in this area are deemed moderate due to the depths involved. <br /> 4.3 Groundwater Sample Location <br /> Based on a review of the permits provided from the EHD for the site, one water well exists for <br /> the site address of 26666 Hansen Road, Tracy, California. Because groundwater is a source of <br /> drinking water for the site; two samples were collected from a spigot adjacent to the water well <br /> for testing of DCBP, EDB and Nitrate. <br /> 4.4 Groundwater Sample Analysis <br /> Two ground water samples were taken from the existing well located on the site. The sample for <br /> nitrate was collected in a sterile plastic container; the sample for DBCP/EDB was collected in <br /> two sterile glass vials. Samples were transported on ice and remanded under chain of custody <br /> to McCampbell Analytical, Pittsburg. A copy of the chain of custody and lab report from <br /> McCampbell Analytical has been included in Appendix E. <br /> Sample results are displayed in the following table: <br /> DBCP* (ug/L) EDB* (ug/L) Nitrate as N** (mg/L) <br /> Water Sample 1 ND ND x <br /> Water Sample 2 x x ND <br /> *EPA method 524.3 <br /> **EPA method 300.1 <br /> No-non detect. <br /> w <br /> x-represents that the sample was not tested for the constituent. <br /> The United States Environmental Protection Agency (EPA) sets the maximum contaminant level <br /> (MCL) for DBCP at 0.2 ug/L and for EDB at 0.05ug/L. DBCP and EDB were non detected. The <br /> EPA sets the MCL for nitrate at 10 mg/L. Nitrate was also non detected. <br /> ©2015 Neil O.Anderson&Associates,Inc.A Terracon Company <br />