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2021-2022 <br />Project No. 14-3002 <br />Page 2 of 7 <br /> <br />Additional Agency: <br />Central Valley Regional Water Quality Control Board <br />11020 Sun Center Drive, Suite 200, Rancho Cordova, CA 95670 <br /> <br />3.0. ON-SITE CONTROL <br /> <br />The Site Safety Officer will coordinate site access control and security. An exclusion zone <br />will be established approximately 20 feet around excavation location work areas. No <br />unauthorized person shall be allowed within this exclusion area. <br /> <br />4.0. HAZARD EVALUATION <br /> <br />The following substance(s) or hazards are known or suspected to be on site. <br /> <br />SUBSTANCES INVOLVED: CONCENTRATIONS: <br />PCBs Max –320 mg/kg (B46-7) <br />TPH-g Max-79.9 mg/kg (B40-17) / 50 ug/l (B40) <br />TPH-d Max-2,400 mg/kg (B47-15) / 1,000 ug/l (B65) <br />TPH-mo Max-7,500 mg/kg (B47-15) / 6,100 ug/l (B65) <br />Dioxin Furans Max-96.6 pg/g (B46-10) / 2.41 pg/l (B48) <br />Lead Max – 6,400 mg/kg (B18-5) / 0.37 mg/l (B46) <br /> <br /> <br />ADDITIONAL POTENTIAL HAZARDS INCLUDE: <br />SLIP-TRIP-FALL NOISE <br />HEAVY EQUIPMENT VIBRATION HAZARDS <br />TRAFFIC HAZARDS <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />