Laserfiche WebLink
03 June 2021 <br />Project No. 21-6431 <br />Page 7 of 15 <br />under chain -of -custody protocols to McCampbell Analytical, Inc. (MAI), a California <br />Environmental Laboratory Accreditation Program (ELAP)-certified laboratory. The sample <br />was analyzed for Nitrate as Nitrogen (N), Nitrate as NO3-, and DBCP. <br />4.6. GROUNDWATER ANALYTICAL REPORT <br />Nitrate as N was detected at 8.0 milligrams per liter (mg/1) and Nitrate as NO3- was <br />detected at 36 mg/I in the water sample; DBCP was not detected above the laboratory <br />reporting limit. The MAI laboratory report (Work Order: 2105883) with quality <br />assurance/quality control (QA/QC) reports and chain -of -custody form are provided in <br />Appendix C. <br />5.0. SOIL PROFILE <br />An OWTS Permit was issued for the property by the EHD on 05 May 2021 to perform a <br />percolation test (Appendix D). On 17 May 2021, a 4 -inch diameter hand auger was utilized <br />to advance a percolation test hole to 42 inches bsg, in the proposed septic system <br />disposal field area. <br />A plan of the specific site features including the percolation test hole locations <br />(i.e., structures, drives, wells, septic systems, large trees, pastures, pools, natural <br />drainage courses, ponds, waterways, etc.) is illustrated in Figure 2. <br />5.1. SOIL PROFILE PIT INCLUDING DEPTH AND DIMENSIONS <br />The percolation test hole was located in the disposal field area of the proposed septic <br />system. The percolation test hole was advanced to a depth of 42 inches bsg using a four - <br />inch diameter hand auger (Figure 2). <br />5.2. SOIL LITHOLOGY AS RELATED TO FUTURE ONSITE SEPTIC USES <br />The soil was visually described in accordance with the Unified Soil Classification System <br />(USCS) by a representative of AGI under the supervision of a California Professional <br />Geologist. The soil collected from the percolation test hole boring consisted of dry to <br />damp, sandy silts from surface grade to approximately 24 inches and clayey silt from <br />24 inches to 42 inches bsg. The soil type is considered semi -permeable and should be <br />sufficient for liquid waste disposal and treatment. <br />