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tested for nitrate (Plate 5). Nitrate was detected in 14 of the wells at <br />concentrations between 0.1 and 5.0 mg/L-N, in three of the wells at <br />concentrations between 5.1 and 10.0 mg/L-N, and in one of the wells at a <br />concentration over 10 mg/L-N; no nitrate was detected in the final well. Within a <br />mile of the Site, 11 wells were tested for dibromochloropropane (DBCP) (Plate <br />6). No DBCP was detected in 10 of the wells; it was detected in the final well at <br />a concentration between 0.01 and 0.2ug/L. The Maximum Contaminant Level <br />(MCL) set by the US EPA for nitrate is 10 mg/L-N; the MCL for DBCP is 0.2 <br />ug/L. <br />7.3 Agricultural Commissioner's Records <br />Live Oak contacted the San Joaquin County Agricultural Commissioner's Office <br />regarding agricultural use of the site. According to Hiromi Hernandez of that <br />office, no pesticide use reports or violations were located for the subject Site <br />(correspondence, September 16, 2021). <br />7.4 Department of Oil, Gas, and Geothermal Resources Maps <br />The California Department of Oil, Gas, and Geothermal Resources (DOGGR) <br />Well Finder website was queried on September 21, 2021 for mapped oil or gas <br />wells within one-quarter mile of the subject Site. No wells were identified within <br />the search radius, though the Site is located within the Galt Gas Field. <br />7.5 National Pipeline Mapping System Database <br />Live Oak reviewed the National Pipeline Mapping System (NPMS) Public Viewer <br />on September 21, 2021 for evidence of hazardous materials pipelines within one- <br />quarter mile of the Site. The NPMS does not depict any hazardous materials <br />pipelines within the search radius. Local pipelines which are not mapped by the <br />NPMS may be present in the area, however. <br />LOGE 2149 7 <br />