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' 05 November 2014 <br /> AGE Project No. 14-3119 <br /> ' Page 6 of 17 <br /> ' 4.1. GROUNDWATER DESCRIPTION FOR THE GENERAL AREA <br /> The San Joaquin County Flood Control and Water Conservation District's Lines of <br /> ' Equal Depth to Ground Water Spring 1999 indicates the depth to ground water is 10 <br /> feet or less. Ground water flow direction locally appears to be north, in the direction of <br /> the Old River. Ground water was not encountered in the 36-inch percolation test hole on <br /> ' 22 July 2014. Based upon a review of well permit records at EHD by an AGE <br /> representative, the total depth of domestic water wells for the surrounding area was <br /> reported to be between 5-feet and 10-feet bsg. <br /> 4.2. GROUNDWATER CONTAMINATION IN THE AREA OF THE SITE <br /> ' The immediately adjacent and outlying land use for the parcel is agricultural in nature. <br /> There are potential ground water contamination issues associated with agricultural uses <br /> ' and local septic systems. A review of the California Department of Toxics and <br /> Substance Control (DTSC) Envirostor Database and the Geotracker Web site revealed <br /> two leaking fuel underground storage tank (LUST) site within a one-mile radius of the <br /> ' site. The site has been closed for more than 10 years and is located more than one-mile <br /> from the subject parcel. <br /> ' 4.3. ON-SITE EXISTING WELL DESCRIPTION <br /> ' The existing water supply well was installed at an unknown date with a six-inch casing. .The grout seal was installed from the surface to an unknown. The well will be utilized for <br /> ' both domestic purposes. <br /> ' 4.4. CONSTITUENTS BEING TESTED FOR IN THE WATER SAMPLE <br /> Nitrate (NO3) constituents were tested in the current groundwater supply well. <br /> 1 <br /> 4.5. GROUNDWATER SAMPLE COLLECTION <br /> ' On 21 July 2014 a sample of the drinking water supplied by the current groundwater <br /> supply well was collected in an unpreserved one-liter plastic container for shipping. <br /> Groundwater sample containers were properly labeled, placed in a chilled container and <br /> transported under chain-of-custody protocols to Cal Tech Environmental Laboratories <br /> (CTEL), a California Department of Public Health-certified laboratory, for analysis <br /> ' Nitrate (NO3). <br /> 1 <br /> Advanced GeoBnvironmentaI,Inc. <br /> 1 <br />