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15999 W CORRAL HOLLOW RD Project No.2019-00027 Page 14 <br /> 3.0 EXISTING AND PROPOSED SEPTIC TANK USAGE <br /> 3.1 Existing On-Site Septic Tank Usage,Permits and Repair History <br /> The EHD septic permit files were reviewed from the San Joaquin Environmental Health Department <br /> (EHD) on June 28, 20193,in an effort to obtain copies of permits for any septic tanks located on the <br /> subject property.No records were returned for the parcel,or nearby surrounding parcels. In general, <br /> the neighboring parcels are very large,rural-agriculture sites,with no permitted facilities. <br /> However,existing onsite records were reviewed from LLNL for sites and buildings which have septic <br /> systems installed.The existing septic systems at Site 300 are permitted by the Central Valley Regional <br /> Water Quality Control Board under WDR-2008-0148. <br /> Based on our review of the limited information available at this time,sites currently use leach lines, <br /> pits,or cesspools,with relatively standard tank sizes(500 to 1500 gallons in size).A copy of the LLNL <br /> facility septic records may be issued by LLNL as approved for security protocol purposes. Please <br /> contact LLNL directly to discuss such related infrastructure copies. Due to public access issues, <br /> regarding critical infrastructure security clearance purposes such reports are not made public <br /> Therefore,we have not included such information in this report. However, Table 1 below shows a <br /> summary breakout of the various buildings and systems that currently exist on site. It should be <br /> noted that not all systems or buildings are in use at this time. <br /> Table 1-Onsite Septic System Information <br /> Summary of Site 300 Septic Systems <br /> System Location Septic System Type Size <br /> (Building) <br /> 801 A&D Septic tank w/Leach field 1000g, (1) 125', (1) 100', (1) 75' <br /> 802 Septic tank w/2 Leach fields 1000g, 75'4" Pipe <br /> 805 2 Septic tanks w/Cesspool 1200g and 350g,460 sq.ft., 141 sq.ft. <br /> 806 A Septic tank w/2 Cesspools 1000, 115 sq.ft. <br /> 807 Septic tank w/2 Leach fields 10008,75'4"Pipe <br /> 809 Septic tank w/Cesspool 500g,315 sq.ft <br /> 810 Septic tank w/Leach field 500g,25'x4" <br /> 812 A&B Septic tank w/2 Leach fields 1000g, 75'4" Pipe <br /> 813 Septic tank w/3 Cesspools 14808 <br /> 817 Septic tank w/4 Leach fields 1000g,55' Pipe <br /> 818 Septic tank w/4 Leach fields 10008,55' Pipe <br /> 819 Septic tank w/Leach field 1000g, 120'4"Tile <br /> 3 San Joaquin County,https://www.sjgov.org/department/envhealth/public-records <br /> Petralogix Engineering,Inc. <br /> 26675 Bruella Road,Galt,Ca 95632 i i36, <br /> (209)400-5729 <br /> www.petralogix.com <br />