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which results in reduced oxygen supply to vital tissues. Pregnant women and certain others can also develop methemoglobinemia. Symptoms include a bluish color of the skin, as well as headache, dizziness, weakness, and difficulty breathing. Ingestion of high levels of nitrate over time can also lead to gastric problems. DBCP is a nematicide and soil fumigant for vegetables and grapes. It is known to cause male reproductive effects and is classified as a probable human carcinogen. Most domestic use of DBCP was discontinued in 1977 through 1979. The US EPA set the MCL at 0.2 parts per billion (ppb, equivalent to µg/L) because it believes that given present technology and resources, this is the lowest level to which water systems can reasonably be required to remove this contaminant should it occur in drinking water. The Maximum Contaminant Level Goal (MCLG) for DBCP is zero. On-Site Wells A domestic well is located on the Site (Plates 2 and 3). The San Joaquin County Environmental Health Department well permit files were searched for the Site address; no permits were identified. A "Well Notice to Abate" dated April 2026 was on file, stating that the well is "open and unsecured" and requesting that the well be immediately repaired or destroyed. This document has been included in Appendix 4. Mr. Medina indicated that he has been retained to perform the necessary repairs (personal communication, April 30, 2026). Water Sample Live Oak collected a water sample from the closest spigot to the domestic well on the Site on April 20, 2026. The sample was analyzed for nitrate and dibromochloropropane (DBCP) per San Joaquin County Environmental Health Department policy. As required by the laboratory, the sample was collected in a plastic container and three glass vials for nitrate and DBCP analysis, respectively. The sample was placed on ice and transported under chain of custody to FGL Environmental, Stockton. Nitrate was detected in the water sample at a concentration of 11.4 mg/L-N, slightly over the MCL of 10 mg/L-N. DBCP was not detected in the sample. The laboratory analytical results are attached as Appendix 5 of this report. Soil Profile and Geologic Information The Site is depicted on the Geologic and geophysical maps of the Stockton 30' x 60' quadrangle, California (Delattre, et al., 2023) as within a map unit of the Modesto formation upper member, consisting of fine-grained material (Plate 11). LOGE 2620 Page 4