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dre April 2013 Project No. 1301-0621 ssoclates, Inc. „ ENGINEERS, GEOLOGISTS & Li ENVIRONMENTAL SCIENTISTS HAZARD EVALUATION Chemicals Onsite. The following substance(s) are known or suspected to be onsite. The primary hazards of each are identified along with their concentrations, if known. Substance Involved Primary Hazard Concentration Petroleum hydrocarbons in soil Ingestion, inhalation and dermal contact Unknown BTEX, MTBE Ingestion, inhalation and dermal contact Unknown Physical Hazards Onsite. The physical hazards and potential for employee exposure to the hazards (i.e., low, moderate, and high) anticipated during the field investigation are discussed below. Noise. Certain equipment (generator, demolition hammer) will generate noise during field activities. This type of equipment may exceed 85 decibels (dBA), which is protective of workers. Therefore, field personnel working in and around such equipment will don PPE (ie., earplugs) that is protective of noise generation above 85 dBA. Heavy Equipment. The hazards involved with using heavy equipment (e.g., drilling rig, forklift, pick-up trucks, etc.) include impact from moving parts; pinch points; entrapment in machinery; electrocution from buried and overhead utilities; and improper operation. The drill holes will be advance using a hand auger. The potential for employee exposure to heavy equipment hazards is considered low during field activities. Slips, Trips and Falls. Site activities can pose a variety of slip, trip and fall hazards. Examples that contribute to slips, trips and falls include uneven ground surfaces and slick or wet surfaces, and unstable earth slopes. The potential for employee exposure to slips, trips and falls is low to moderate during field activities. Overhead and Underground Utilities. Typical site activities such as movement of equipment or intrusive activities such as subsurface drilling can present the risk of contact with overhead or underground utilities. A safe distance (10 to 15 feet) has to be maintained between the drilling rig and any identified overhead utilities. Additionally, Underground Service Alert will be contacted to mark all underground facilities in the vicinity of intrusive activities. Since the drill holes will be advanced using a hand auger, the potential for employee exposure to utility hazards is low during field activities. Heat Stress. High temperatures, direct sun, use of PPE, and labor-intensive activities may contribute to heat stress. Heat stress can involve a high risk of illness of death. Exposure to heat stress at this site is considered low, because field work will be performed in the spring months. Plenty of water will be available to maintain hydration. 13 0621 _Kaiser Slockton_TWP-HSP - A4 -