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September 20,2001 Job Number: LGOI-098 Page 4 Table 2. Septic permit review summary (see appendix for permit copies). Address,Date Tank Capacity Lines, Length,Pits Comments 7998 Ponderosa Street, 1,600 gals. Install four(4),80-R long leach lines. New installation. 4/4/95. V. GROUND WATER Two onsite wells are known to exist on the property and are shown on Plate No.-f.-- The depth to water and first of two ground water samples were gathered from the east_ well. The west well is a partially buried, large,,diameter agricultural well that is inaccessible due to a welded protective cover. In addition fo the onsite water level information gathered from the east well, the San Joaquin County lkoo&`C_ontrol and Water Conservation District ground-water depth and elevation maps were reviewed to determine the ground water levels near the site.' Table 3 summarizes all the available ground water information collected for the site and nearby area. Table 3. Summary of Available Ground Water Information. Date,Source Groundwater Depth Notes August 16,2001,one(1) 8-ft soil boring, Ground water not Neil O. Anderson&Associates,Inc. encountered Initial test: Water sample obtained on 34 feet below the ground Questionable results from lab: August 17,2001 from the east well,located surface Water quality test Nitrate-450 mg/L on site, 7960 Ponderosa Street,French as NO3(100 mg/1 as N or 100,000 Camp,California. ug/I as N). Water quality test DBCP -ND. -- Retest:Additional water sample obtained Unknown Water quality test Nitrate-3.20 on September 13,2001 from the fire station mg/L as NO,(0.71 mg/1 as N or 710 well located north and across the street, ug/I as N). northeast corner of 6'and Ponderosa Street,French Camp,California. ' San Joaquin County Flood Control and Water Conservation District. Depth to ground water and ground- water elevation maps Fall 1998 and Spring 1999. Published biannually,Scale: 1 inch=2 miles. r°ERso z o � ♦SSOL� r