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S/[ARPManagement Manua! ,4 4450,0C Former Tracy MGP Project Safety Plan (PSP) • Heavy equipment operation—Direct push drilling equipment will be used for soil boring investigation • Noise—Working on or near drilling equipment • Overhead and underground electrical— Underground utilities exist within the proposed excavation area. These may include electrical and/or natural gas lines. 6.2 FIVE HAZARD CONTROL MEASURES-ORDER OF PRECEDENCE Site hazards and hazards resulting from investigation and remediation activities are controlled using one or more of the control measures listed below. The order of precedence is as follows: 1. Engineer/design to eliminate or minimize hazards. A major component of the design phase is to select appropriate safety features to eliminate a hazard and render it fail-safe or provide redundancy using backup components. 2. Guard the hazard. Hazards that cannot be eliminated by design must be reduced to an acceptable risk level by safety guards or isolation devices that render them inactive. 3. Provide warnings. Hazards that cannot be totally eliminated by design or guarding are controlled through using a warning or alarm device. 4. Provide special procedures or training. When design, guarding, or warnings cannot eliminate hazards, subcontractors must develop procedures, training, and audits to ensure safe completion of work. Training cannot be a substitute for hazard elimination when life-threatening hazards are present. These procedures include decontamination, which minimizes transport of impacted materials. All equipment that comes into contact with potentially impacted soil or water will be decontaminated consistently as to assure the quality of samples collected. Disposable equipment intended for one time use will not be decontaminated,but will be packaged for appropriate disposal. Decontamination will occur prior to and after each use of a piece of equipment. All drilling and sampling devices used will be decontaminated using the following procedures: • Non-phosphate detergent and tap water wash,using a brush, if necessary; • Tap-water rinse; • Initial deionized/distilled water rinse; and • Final deionized/distilled water rinse. Equipment will be decontaminated in a pre-designated area on pallets or plastic sheeting and clean bulky equipment will be stored on plastic sheeting in uncontaminated areas. Cleaned small equipment will be stored in plastic bags. Materials to be stored more than a few hours will also be covered. 5. Provide personal protective equipment. To protect workers from injury, the last method in the order of precedence is the use of personal protective equipment, such as hard hats, gloves, eye protection, life jackets, and other protective equipment with the understanding that bulky, cumbersome, and heavy personal protective equipment is often discarded or not used, rendering this method ineffective without proper controls. 23