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70n20, 0900 hours,percolation testing commenced for the two Parcels. There was standing <br /> he two test borings for Parcel 1 after the soak period. Consequently, EHD Test <br /> e#1 was employed. The shallow test boring on Parcel 2 had standing water,but no <br /> standing water in the deep 10.5 foot boring. Consequently,Percolation Test Procedure#2 was <br /> used for this boring. Perc readings were taken over a four-hour test period to ensure maximum <br /> soil saturation under"worst-case scenario"conditions. The only acceptable perc rate was the <br /> deep perc test on Parcel 2. All three of the other tests failed. The last half hour of the tests was <br /> witnessed by Lisa Medina of the San Joaquin County Environmental Health Department. <br /> The following chart summarizes and illustrates the parcel number,proposed acreage and perc test results: <br /> PERCOLATION TEST RESULTS AND RELATED DATA <br /> PROPOSED PARCEL PROPOSED PERC TEST DEPTHS: POST SOAK PERC TEST <br /> AND POTENTIAL ACREAGE SHALLOW PERIOD RESULTS <br /> SEPTIC SYSTEM DEEP STATUS <br /> STRUCTURE <br /> Parcel 1 3.1 Acres 42 INCHES 6Inches FAILED <br /> Engineered System Standing Water (0 min/in) <br /> 300 INCHES(25 FEET) —12 Inches FAILED <br /> Standing Water (0 min/in) <br /> Parcel 2 53.9 Acres 42 INCHES 6Inches FAILED <br /> LeacWines and Standing Water (0 min/in) <br /> Sumps only in the <br /> area of testing. 126 INCHES(10.5 FEET) No Standing 22.7 min/in <br /> Water in Hole <br /> LOCAL GROUNDWATER AND SURFACE WATER INFORMATION <br /> The 1999 Lines of Equal Elevation Map published by the San Joaquin County Flood Control <br /> illustrates the groundwater elevation and the directional flow. It appears that the groundwater is <br /> flowing in a northwest direction toward a zone of recharge. The 1999 Lines of Equal Depth Map <br /> illustrate the groundwater depth to be 103 feet below ground surface. <br /> A Well Driller's Log for a domestic well on Gawne Road was available to illustrate the <br /> underlying soil lithology. The soil strata down to 180 feet consists of clay. At 180 feet there is a <br /> sand and gravel stratum,with another sand stratum at 228 feet. <br /> There is an extremely remote possibility of the surfacing of effluent from inundated conditions, <br /> although the soil drains surprisingly well. The subject property is not subject to the 100-year flood; <br /> however,this should be verified by the Surveyor, Aspen Survey of Modesto, California. <br /> Chesney Consulting <br />