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HEALTH AND SAFETY CHECKLIST Possible Site Hazards: Landfill gas (LFG) is the product of Substance PEL IDLH the bacterial decomposition of the organic materials Involved deposited in landfills. LFG can be emitted into the atmosphere and/or migrate through soil into areas Benzene 0.1 ppm 3000 ppm surrounding landfill sites. Methane, a primary component of Vinyl Chloride 1.0 ppm none LFG, is combustible and can be explosive when allowed to Ethylene Dibromide 50 ppm 400 ppm accumulate in enclosed areas at concentrations between five Ethylene Dichloride 1.0 ppm 1000 ppm and fifteen percent by volume in air. LFG also contains trace Methylene Chloride 50 ppm 10,000 ppm concentrations of volatile organic compounds (VOCs), some PCE 25 ppm 500 ppm _ of which can be hazardous at sufficient dose or exposure. Carbon Tetrachloride 2.0 ppm 300 ppm Studies have shown that concentrations of most VOCs in Methyl Chloroform 350 ppm 1000 ppm ambient air on and in the vicinity of landfill sites are well TCE 50 ppm 1000 ppm below threshold limits. However, work at landfill sites Chloroform 2.0 ppm 1000 ppm _ requires precautionary measures to mitigate against potential Hydrogen Sulfide 10 ppm 300 ppm combustible gas hazards and exposure to VOCs. A listing of VOCs that can be present in LFG is provided herein. Combustible Gas LEL IIEL Hazard Methane 5%v/v 15%V/v Personal Protective Equipment: Level D protection will be Level D will consist of the following equipment: used when worksite conditions have been shown not to • Hard hat warrant Level C equipment. Air monitoring will be conducted • Safety glasses to identify and quantify airborne contaminants in order to • Steel toed work boots determine the level of worker protection (PPE) needed. The • Optional equipment as necessary(e.g. sunscreen,tyvek personnel monitoring program will be based on the most coveralls, etc.) conservative exposure standards (NIOSH) for known potential chemical hazards. Level C will consist of the following equipment: • Full-face or half face, air purifying respirator with Periodically during advancement of borings,the worker organic vapor cartridges and particulate air(HEPA)filter. breathing zone and/or boring opening will be monitored for •Tyvek coveralls. combustible gas and VOCs. Air monitoring will be conducted • Nitrate/neoprene/or PVC inner and outer gloves. with two instruments initially, a photoionization detector for • Duct tape wrapping for Tyvek suit ankle and wrist organic vapors and a combustible gas/oxygen indicator. The cuffs. concentrations of organic vapors, combustible gas, and • Hard hat percent oxygen as detected during work activities and the • Safety glasses judgement of the Health and Safety Supervisor(HSS)will • Steel toed work boots dictate required levels of response. Required response •Optional equipment as necessary: actions will include: 1) increases/decreases in respiratory - Disposable outer boots protection; 2) implementation of site control measures; 3) - Escape Mask implementation of secondary monitoring methods; and 4) evacuation of the worksite. Since one or several of these Monitoring Equipment: responses may occur simultaneously, The Action Level Response Table has been established to identify locations • Thermo Environmental Instruments, Inc. Model 580 A where monitoring will be conducted, monitoring frequency, organic vapor meter(OVM) photoionization detector action levels, and required response actions. with 10 Ev lamp (or equivalent) Safety Procedures for Well Drilling and Construction • Drager sampling pump (or equivalent) with tubes for 1) The site manager/Health and Safety Supervisor (HSS) Benzene, Hydrogen Sulfide and Vinyl shall be present at all times during construction activities. Chloride detection This person shall have the sole responsibility of assuring the observation of all safety procedures, and will be trained in •Gastech GX3N (CH4&02) combustible gas the use of all recommended safety equipment. 2)All indicator (CGI) or equivalent. personnel shall comply with the established safety procedures. 3) Working under the influence of illegal drugs Emergency Equipment: SCS personnel will be provided and alcohol is prohibited. 4)All field equipment shall have with a well-stocked first aid kit, a fire extinguisher, and a spark arresters and shall be rated as explosion proof. cellular mobile phone if emergency response is required. Smoking, welding, or use of sparking equipment shall not be permitted within 50 feet of a boring. 5) Fire extinguishers will be on hand during drilling operations. 6) No worker will be allowed to work alone at any time near the edge of the well under construction. A sufficient number of workers will be present to remove an injured worker and/or summon help. 7) All open borings will be covered at the and of the working day. 8) No unapproved equipment is allowed on site.