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SMe %.-� <br /> 4.0 HAZARD EVALUATION <br /> Previous data have indicated the presence of DBCP in the soil(s) at con- <br /> centrations up to 9 parts per billion (ppb) at the Lodi site, 0.5 ppb at the <br /> Parlier site, 1.2 ppb at the Sanger site and 0.4 ppb at the Lodi site. This <br /> material may exist as a constituent of the soil and/or as impurities to <br /> groundwater. <br /> 4.1 1,2-DIBROMO-3-CHLOROPROPANE (DBCP) <br /> DBCP is a clear, yellowish liquid with a pungent odor used primarily as <br /> a soil fumigant. It is a confirmed human carcinogen with experimen- <br /> tal carcinogenic and teratogenic data. DBCP is moderately toxic by skin <br /> contact and a severe irritant to skin and eyes. Studies have shown that <br /> its main noncancerous effect is on male reproductive organs. Men <br /> exposed to DBCP may produce fewer sperm and eventually become <br /> unable to father children. The OSHA PEL for DBCP is currently listed <br /> as 0.001 parts per million (ppm) over an 8-hour time-weighted average <br /> (TWA). Air purifying respirator cartridges are ineffective against <br /> DBCP, therefore supplied-air respirators may be required if the action <br /> level specified in Section 5 of this HSP is reached. <br /> 4.2 PHYSICAL HAZARDS <br /> Physical hazards associated with site activities include slips, trips, falls, <br /> contact and crushing type injuries, abrasions, contusion, lacerations, <br /> flammability and heat stress concerns. The potential for such hazards <br /> necessitates the use of gloves, safety shoes or boots and hard hats. <br /> Additionally, personnel engaged in strenuous physical labor are to <br /> wear sturdy work gloves. <br /> 4.2.1 Use of Equipment <br /> Equipment, including backhoes and hollow-stem auger drilling <br /> equipment, will be operated in strict compliance with the manufac- <br /> turer's instructions, specifications and limitations as well as any appli- <br /> cable regulations. The operator is responsible for inspecting the <br /> equipment daily to ensure that it is functioning properly and safely. <br /> This inspection will include all pins, pulleys, and connections subject <br /> to faster than normal wear and all lubrication points. <br /> When equipment with moving booms, arms or masts are operated in <br /> the vicinity of overhead hazards, the operator, with assistance from the <br /> designated signaling person, will ensure that the moving parts of the <br /> 4-1 <br />