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The risk of significant exposure to asbestos or lead in asbestos-containing materials (ACM) or other <br /> T22 (CAM17) metals, including arsenic, cadmium and inorganic lead, or petroleum hydrocarbons in <br /> soil contaminants is considered to be low to moderate while performing the sampling of construction <br /> materials or soils and groundwater characterization tasks required on this project. Soil drilling methods <br /> (wet) and safe work practices to be employed will reduce the potential for significant exposures to <br /> airborne contaminants. <br /> Detailed information regarding the physical description of asbestos, inorganic lead and other metals. as <br /> well as petroleum hydrocarbons, including health hazards, routes of entry into the body, signs and <br /> symptoms of exposure, and target organs, published exposure limits (TWA, STEL, ceiling, and IDLH <br /> concentrations); chemical and physical properties are available in Attachment A — T8 CCR §1529 <br /> Asbestos - Appendix H, Attachments B - T22 (CAM 17) Metals, C - T8 5194 Arsenic - Appendix E, D <br /> - T8 5194 Cadmium, E — T8 §1532.1 Lead - Appendix A and Attachment F for Petroleum <br /> Hydrocarbons. The chemical guides for petroleum hydrocarbons and representative T22 (CAM 17) <br /> Metals is published by the National Institute for Occupational Safety and Health (NIOSH) 2005; the <br /> Substance information sheets for Arsenic, Cadmium and Lead are Appendices A of T8 CCR §§5214, <br /> 5207 and 1532.1 respectively. <br /> 3.5.1 Asbestos <br /> Types/Source: Asbestos-Containing Materials(ACM) <br /> Exposure Route: Inhalation; ref. Attachment A - T8 CCR &1529 Asbestos—Appendix H <br /> Qualified Exposure Risk: Low <br /> Target Organ(s): Lungs/gastrointestinal tract; ref. Attachment A <br /> Hazard Control(s): <br /> • Site Control—Isolation and control access to work/sampling locations <br /> • Engineering Control - wet methods,dust suppression and adherence to specific work methods and <br /> procedures <br /> Negative Exposure Assessment: Results of industrial hygiene monitoring of representative tasks <br /> and work procedures for asbestos using these controls documented exposures consistently below <br /> the PEL and TLV (ref. T8 CCR §1529(f)(2)(C)). <br /> • Avoid contact with, and inhalation of potentially contaminated dust <br /> • PPE-Gloves/safety glasses; possible us of respirators <br /> • Use appropriate sanitation and personal hygiene as outlined in Section 4.2. <br /> CHEMICAL NAME AND CAS# ROUTES OF ENTRY PUBLISHED EXPOSURE LIMITS <br /> CATEGORY CONCENTRATION SOURCE <br /> Asbestos Inhalation TLV-TWA 0.1 fibers/cc ACGIH/ <br /> 1332-21-4 PEL-TWA 0.1 fibers/cc Cal/OSHA <br /> Stockton 6-Lane,Task Order No.82 Caltrans Contract 06A1141,EA 10-03A1001 <br /> Project No.S9200-06-82 - 9- December 2009 <br />