Laserfiche WebLink
concentrations of 5.5 mg/L-N or more (Hull, 1984). The US EPA has set the Maximum <br /> Contaminant Level (MCL) for nitrate at 10 mg/L-N. <br /> Although nitrate is a naturally occurring compound necessary for plant growth, it can <br /> cause health problems when present at high levels in drinking water. The most <br /> common health effect of nitrate in water is methemoglobinemia, or blue baby syndrome, <br /> which results in reduced oxygen supply to vital tissues. Pregnant women and certain <br /> others can also develop methemoglobinemia. Symptoms include a bluish color of the <br /> skin, as well as headache, dizziness, weakness, and difficulty breathing. Ingestion of <br /> high levels of nitrate over time can also lead to gastric problems. <br /> DBCP is a nematicide and soil fumigant for vegetables and grapes. It is known to <br /> cause male reproductive effects and is classified as a probable human carcinogen. <br /> Most domestic use of DBCP was discontinued in 1977 through 1979. The US EPA set <br /> the MCL at 0.2 parts per billion (ppb, equivalent to µg/L) because it believes that given <br /> present technology and resources, this is the lowest level to which water systems can <br /> reasonably be required to remove this contaminant should it occur in drinking water. <br /> The Maximum Contaminant Level Goal (MCLG) for DBCP is zero. <br /> On-Site Wells <br /> A domestic well is located on the Site. The San Joaquin County Environmental Health <br /> Department well permit files were searched for the Site address; one permit was <br /> identified. The permit, dated April 2003, was for a new domestic well with a proposed <br /> depth of 450 feet and grout seal depth of 100 feet. This permit has been included in <br /> Appendix 4. <br /> Water Sample <br /> Live Oak collected a water sample from the domestic well on the Site on February 5, <br /> 2026. The sample was analyzed for nitrate and dibromochloropropane (DBCP) per San <br /> Joaquin County Environmental Health Department policy. <br /> As required by the laboratory, the sample was collected in a plastic container and three <br /> glass vials for nitrate and DBCP analysis, respectively. The sample was placed on ice <br /> and transported under chain of custody to FGL Environmental, Stockton. <br /> Neither nitrate nor DBCP was detected in the water sample. The laboratory analytical <br /> results are attached as Appendix 5 of this report. <br /> LOGE 2606 Page 4 <br />