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[4] Continued. <br /> An Exploratory Log of Boring was not performed on the subject <br /> parcel since the groundwater is fairly shallow in this area. The <br /> groundwater will be discussed in the following section. <br /> The percolation tests conducted by Quality Control Inspection, Inc. <br /> were performed in accordance with Environmental Health Department <br /> regulations, under the observation of Mr. Hector Castro, Registered <br /> Sanitarian. Testing was truncated per Mr. Castro' s recommendation <br /> since the data illustrated stable percolation rates. Although deep <br /> (8 feet) test borings were drilled on Parcel No. 1 and the DR, they <br /> were not tested due to the fine sandy soil structure encountered. <br /> The percolation rate obtained for the shallow test boring on the DR <br /> was calculated to be 4 . 3 minutes per inch. The percolation rate on <br /> Parcel No. 1 was calculated at 20 min/in. <br /> The percolation testing performed on Parcel No. 1 and the DR was <br /> conducted at the borders of the existing almond orchard. <br /> [5] LOCAL GROUNDWATER INFORMATION <br /> The 1991 "Lines of Equal Depth of Water in Wells" map produced by <br /> the San Joaquin County Flood Control and Water Conservation <br /> District indicates that the static water level is located at <br /> approximately 20 feet in the area of the subject property. The <br /> groundwater flow according to the District maps appears to be <br /> _. towards the northeast, although many factors can influence this <br /> general groundwater directional flow. There are irrigation wells <br /> in the vicinity of the subject parcel which can be a primary factor <br /> in groundwater directional flow changes. <br /> Nitrate and DBCP analyses were performed on the domestic well water <br /> that services the residence in the southeast portion of the DR. <br /> The results indicate a concentration of . 32 ug/L for DBCP, and a <br /> 3 <br /> s . a Quality Control Inspection <br />