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The well was drilled in 1943 and operated by the Amerada Hess Corporation. It was approved in 1969 for conversion from an idle producing well to an injection well for water disposal. An estimated 800 to 1,000 barrels of water per day produced from other wells in the Lodi Gas Field were to be injected into the well at a depth of approximately 2,500 feet below ground surface. The injection well was abandoned in accordance with the requirements of DOGGR in 1972. Relevant documents are included in Appendix 4. Production fluids from gas wells often come ,from old salt water deposits deep underground. These "brines" may include dissolved salts of sodium, chloride, magnesium, calcium, and potassium. Other chemicals associated with gas production fluids include metals and organic compounds used during the drilling -process -(Penn State, 2009). In theory, since these fluids are injected at a depth well below the drinking water aquifer, there should be no impact to the aquifer. /7.6 National Pipeline Mappig_q System Database Live Oak reviewed the National Pipeline Mapping System (NPMS) database for evidence of hazardous materials pipelines within one-quarter mile of the Site. According to this database, a gas transmission pipeline runs along Bruella Road to the west of the Site and appears to extend eastward into the adjacent property. The pipeline is operated by Lodi Gas Storage, LLC. Live Oak observed signposts for a gas pipeline along Bruella Road to the south of the Site but could not confirm its location adjacent to the Site. /8.0 IDENTIFIED CONTAMINATION SOURCES The following sources of past, current, on-site, and off-site contamination have been identified as a result of this investigation: Identified Contamination Source Evaluation & Recommendations The Site was .developed as an Agricultural chemicals may remain in Site orchard in 1937 or earlier. A garden soils. The only way to determine the 1. was present to the east of the house presence or absence of these chemicals from the 1980s until recently. (Past is by testing and analysis. Typically, any on-site) such testing is conducted at the homeowner's discretion. Agricultural chemicals continue to be Surrounding properties are used for applied to these sites. Assuming 2. agriculture. (Current and past off- responsible application, no action is site) warranted at this time. LOGE1004 Page 6