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THA / Chemical Storage Facility/ 1010 Industrial Drive, Stockton CA / Drilling HASP 3 Heavy equipment operators should have proper training and experience, and documentation of both. The general provisions of CFR1910/1926 apply. Wear hearing protection in the immediate vicinity of heavy equipment. 3.3.2 Drilling Safe work practices for personnel during drilling operations include the following: All overhead and buried utilities must be surveyed, located, marked, and noted prior to exploratory boring or excavation activity; The drill rig, shall not be operated within 20 feet of a power line. Remember that hoist lines and overhead power lines can be moved toward each other by the wind; All drilling and downhole sampling equipment must be cleaned before arriving on site. Drilling or downhole sampling equipment must be decontaminated after each use. Cleaning should be done with a hot-water pressure washer or with an Alconox/distilled water rinse; Work in less contaminated areas should be conducted first, where practical; The minimum number of personnel necessary to achieve the objectives should be within 25 feet of the drilling or excavation activity. If emergency personnel, backup contract/subcontract personnel or observers are at the site, they should remain 25 feet from the drilling or downhole sampling activity, when practical; Be aware of the potential for vapors to reach explosive concentrations in confined spaces and the flammability of the volatile organics. Provide adequate ventilation, do not allow smoking, and keep hot motors/pumps and/or electrical equipment away from areas with vapors. Confined spaces present special hazards. Do not enter confined spaces without adequate training and preparation; When sampling soil, water or product, neoprene or nitrile gloves should be worn to prevent skin contact with sampled media; and Air-purifying respirators shall be accessible for immediate use and managed in accordance with OSHA's Respiratory Protection Standard. Additional safety procedures for monitoring drilling activities include: The drill rig shall not be driven from hole-to-hole with the mast in the raised position; Surveying of overhead and buried utilities is required on every boring. They should be located and emphasized on all boring location plans and boring assignment sheets; When overhead electrical power lines exist at or near a drilling location, consider all wires to be alive and dangerous; Watch for sagging power lines before entering a site. Do not lift power lines to gain entrance. Call your supervisor or project engineer; Underground electricity is as dangerous as overhead electricity. Be aware and always suspect the existence of underground utilities such as electrical power, petroleum products, telephone, sewer and water; It is the responsibility of the driller to be aware of the dangers of underground utilities and to be on the watch for physical signs of underground utilities. However, the initial responsibility of locating, emphasizing the on-site plan and contacting utility owners lies with the project engineer. The operator of a drill rig should never leave the controls when the rig is in operation. If the operator must leave the controls, the transmission controlling the rotary must be placed in the neutral position and the feed control lever in neutral. If the operator R:IProjectsITHA1003-Stockton Phase ll ESAIDrillingIHASP McGinley and Associates, Inc.