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J DAVIS AV <br /> - -- — - -- O Z <br /> v) <br /> • s FXFFEAV' ' - <br /> Building 21N <br /> Model Airplane Skeet Trap <br /> Landing Strip Subarea Courts <br /> �:� �: -tea �• ! .9} � �' �� ¢ $ ",� ,} ; � <br /> MCCLOXAV <br /> uildi g 128 <br /> TINTER AV <br /> i• m �� i <br /> ........... <br /> GILLISS AV -;o ----- - <br /> Building 129 <br /> R e <br /> 0 <br /> • W <br /> a <br /> � o <br /> � o <br /> YYqq ; <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 Anchor QEA(2018). Feet <br /> ® Soil Sample Location(Haley&Aldrich,2020) Data Set Boundary 2.Soil data presented were collected to maximum depths of 20 feet below ground surface. <br /> Benzo(a)anthracene Results Soil Sample Location O Site 47 Pre-Decisional LUC Boundary 3.The screening level(SL)of 12,000 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(a)anthracene Concentrations in Soil <br /> Industrial SL=12000(pg/kg) HHRA Note Number:3. DTSC-modified Screening Levels(DTSC-SLs).Table 1 (Soil).Release <br /> Historical and Current Site Features Hatched interval indicates non- Site 47 <br /> Size of overall core F analyzed segment 0-1.5 ft bgs date:April 2019. <br /> �� Not Detected � Trap Shotfall' � y g ( ) 4.The DTSC HERO(2019)cancer screening level for residential soil is 1,100 Ng/kg. Port of Stockton, Rough&Ready Island <br /> 0 <br /> <1x SL ® reflects total core depth *-Solid interval indicates 5. DTSC=Department of Toxic Substances Control Stockton, California Trap Shooting Area of Maximum Shotfall analyzed segment(1.5-3 ft bgs) <br /> 6. HERO=Human and Ecological Risk Office <br /> 0 1 -2x SL Skeet Shotfall' 7. pg/kg=microgram per kilogram Geosyntec D Figure <br /> Skeet Shooting Area of Maximum Shotfall' 8.ft bgs=feet below ground surface <br /> 9. For locations with field duplicates,the primary sample data was plotted. Consultants <br /> ' Interstate Technology and Regulatory Council(ITRC).2003.Characterization and Remediation 8a <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\2021-12_DraftRevisedFFS-2\Fig10a_13enzo(a)anthracenelnSoiI.mxd 2/8/2022 11:28:08 AM(Author:howie.chen) <br />