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GE <br /> GENESIS ENGINEERING&REDEVELOPMENT <br /> Remedial Action Levels in Soil <br /> Commercial <br /> COPC Screening Level Source <br /> (m /k <br /> Est.background concentration from <br /> Arsenic 12 the Preliminary Endangerment <br /> Assessment Report(Arcadis 2012) <br /> Cadmium 7.3 HHRA Note No.3(June 2016) <br /> Lead 320 HHRH Note No.3(June 2016) <br /> PCB—Aroclor 1248 0.95 USEPA Region 9 Regional <br /> Screening Levels(May 2016) <br /> PCB—Aroclor 1254 0.97 USEPA Region 9 Regional <br /> Screening Levels(May 2016) <br /> PCB—Aroclor 1260 0.99 USEPA Region 9 Regional <br /> Screening Levels(May 2016) <br /> Benzo(a)pyrene 0.13 California Human Health Screening <br /> Level(Jan.2005) <br /> 420 to 3,500,000 <br /> Total Petroleum (dependent on USEPA Region 9 Regional <br /> Hydrocarbons hydrocarbon Screening Levels(May 2016) <br /> fraction) <br /> Dioxin 0.000022 to <br /> (dioxin toxicity 0.00007 HHRA Note No.2(April 2017) <br /> equivalent) <br /> 3.2 Other Concerns <br /> In addition to the 13 AOC,Arcadis (2102) also identified other concerns including: <br /> • Ash covering the foundation adjacent to Boring B-29; <br /> • Abandonment of the on-Site water supply well; <br /> • Removal of cabinets, debris, buildings, and foundations. <br /> Former Gordon Research Company Property 10 of 20 <br /> Removal Action Workplan <br /> June 2017 <br />