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11 <br /> rr <br /> co J <br /> J DAVIS-AV <br /> O ' <br /> O <br /> • <br /> ' • ' FYFFE/AV ' a • <br /> -�.. <br /> —---_.--, Building 21.4 �44� <br /> _ <br /> Model Airplane Skeet <br /> Subareap <br /> Landing Strip Courts <br /> MCCLOY-AV L IN T <br /> Ui laii g 128 <br /> �W - <br /> Q c � J � J � J 0 0 0 � • �` I � <br /> P_INTER-AEl V <br /> J © 0 J L 0 ' <br /> GILLISSAV -- ---- --'--'--' ! <br /> / B Idin 9. =, " <br /> c o <br /> o � <br /> Notes: 0 250 <br /> Legend 1.Soil analytical data were collected between 1995 and 2015 and compiled by Geosyntec and <br /> Human Health Screen Data Set Bounds Anchor QEA 2018 . Feet <br /> ® Soil Sample Location(Haley&Aldrich,2020) � Boundary ( ) <br /> Benzo(b)fluoranthene Results Soil Sample Location Site 47 Pre-Decisional LUC Boundary 2•Soil data presented were collected to maximum depths of 20 feet below ground surface. <br /> 3.The screening level(SL)of 13,000 pg/kg is the cancer screening level for commercial or <br /> Residential SL=1100(pg/kg) Q Approximate Location of Firing Point Sediment Core Symbology industrial soil from:DTSC HERO,2019.Human Health Risk Assessment(HHRA)Note. HERO N Benzo(b)fluoranthene Concentrations in Soil <br /> Industrial SL=13000(pg/kg) Historical and Current Site Features HHRA Note Number:3. DTSC-modified Screening Levels(DTSC-SLs).Table 1 (Soil).Release <br /> 0 Hatched interval indicates non- Site 47 <br /> date:April 2019. <br /> Not Detected Q Trap Shotfall' Size of overall core� F analyzed segment(0-1.5 ft bgs) 4.The DTSC HERO(2019)cancer screening level for residential soil is 1,100 pg/kg. Port of Stockton, Rough&Ready Island <br /> 0 <1x SL ® Trap Shooting Area of Maximum Shotfall' reflects total core depth HH*-Solid interval indicates 5. DTSC=Department of Toxic Substances Control Stockton, California <br /> 0 1 -2x SL Q Skeet Shotfall' analyzed segment(1.5-3 ft bgs) 6. HERO=Human and Ecological Risk Office D <br /> 7. pg/kg=microgram per kilogram Geosyntec Figure <br /> - 2-5x SL ® Skeet Shooting Area of Maximum Shotfall' 8.ft bgs=feet below ground surface <br /> Site 47 Sub-areas 9. For locations with field duplicates,the primary sample data was plotted. Consultants <br /> Interstate Technology and Regulatory Council(ITRC).2003.Characterization and Remediation 8c <br /> of Soil at Closed Small Arms Firing Ranges.January. WR2501 B February 2022 <br /> \\oakland-01\data\GIS\Port_Of_Stockton\Rough-and-Rea dy-Isla nd-PM\Project\Site 47\2022-02_DraftRAP\Fig8c_13enzo(b)fluorantheneInSoiI.mxd 2/8/2022 11:31:12 AM(Author:howie.chen) <br />