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Proiect Number 1804BK54 April 11,2013 the rig to prevent moving parts from causing injury. • Unauthorized personnel should be kept out of the immediate work area. Noise Use of heavy equipment on the Site may result in noise levels that exceed the Cal/OSHA permissible exposure limit of 90 dBA time-weighted average for an 8-hour workday. Site workers will wear hearing protection that will provide a noise rating reduction (NRR) of a minimum of 20 dB when operating or working around heavy equipment. Hearing protection will consist of earplugs or protective headphones. Underp,round and Overhead Utilities Prior to subsurface intrusive activities that may encounter buried utilities, Underground Service Alert (U.S.A.) will be contacted at least two working days in advance to notify utility companies to field locate underground utilities. This typically includes water lines, electrical lines, television cables, and sewer piping. When working near overhead utility lines a minimum 20-foot clearance will be maintained by equipment using upright booms that may come into contact with the utility lines. Materials and Equipment Handling Workers can be exposed to the physical risks of handling materials and equipment including muscle strains and minor injuries. Field employees will utilize proper safe lifting techniques, as reviewed in the annual 8-hour refresher HAZWOPER course. Use of proper PPE such as steel-toed boots and heavy work gloves will help prevent minor injuries. Heavy materials should be moved using mechanical devices (e.g., dollies, hydraulic lift gates) where available to reduce the risk of personal injury. Personal Protective Equipment Personal protective equipment will be used to protect personnel from potential hazards arising from the field activities. The amount and type of PPE will be determined in the field by the SSO in accordance with the guidelines set forth in the SSP. As this work involves destroying wells that have been cleanup up of contaminants, respiratory protection should not be needed; however, respiratory equipment will be on hand in case of unforeseen circumstances. Skin protection will be employed through the use of coveralls and chemical-resistant nitrile gloves when handling media (soil or groundwater) that may be potentially contaminated. The SSO will keep field personnel informed of the Level of PPE recommended to safely perform the work activities. Level D Protection The well destruction activities will be performed utilizing Level D protection, unless determined otherwise by the SSO. The following are minimum requirements for Level D PPE: • Work shirt and long pants • ANSI-approved steel-toed boots or safety shoes • ANSI-approved safety glasses • ANSI-approved hard hat • Hearing protection • Heavy work gloves to reduce the risk of hand injury when working with heavy E2C Remediation Appendix A-6