Laserfiche WebLink
16 Febuary 2022 <br />Project No. 22-6747 <br />Page 5 of 13 <br />AdvancedGeo <br />An Employee -Owned Compony <br />A review of the California Department of Toxics and Substance Control (DISC) <br />FnviroStor Database and the Geotracker Web Site did not reveal any Leaking <br />Underground Storage lank (LUST) sites within 0.5 miles of the site. <br />4.3. ON-SITE EXISTING WELL DESCRIPTION <br />There are no wells on the subject property. A domestic well will be constructed on the <br />subject property during site redevelopment to serve as the potable water source. <br />5.0. SOIL PROFILE <br />An OWTS Permit was issued for the property by the EHD on 27 January 2022 to perform <br />a percolation test (Appendix B). On 10 February 2022, a 4 -inch diameter hand auger was <br />utilized 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 <br />three-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 clayey <br />silts from surface grade to approximately 24 inches and dry silt from 24 inches to 42 <br />inches bsg. The soil type is considered semi -permeable and should be sufficient for liquid <br />waste disposal and treatment. <br />6.0. PERCOLATION TEST INFORMATION <br />A percolation soil suitability test was performed at the site under EHD permit No. <br />SR0084781 using a four -inch diameter soil boring established to a depth of 42 inches <br />bsg. A site map showing the approximate location of the percolation test hole is illustrated <br />