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AIL TASK-BY-TASK RISK ASSESSMENT (Complete One Sheet for Each as TASK DESCRIPTION Task 2c — The groundwater monitor wells installed at the site will be developed and sampled using bailers, all purge water will be placed in drums or other suitable container. EQUIPMENT REQUIRED/USED (Se epecflic,e.4..hard tools.heavy equfprnettt,ktstrumerns,PPE) See above. Additional items include use of hand tools for well sampling. PPE will include gloves (surgical and leather), cotton coveralls, steel toed boots, eye protection w/side shield. Initial developing/sampling will include monitoring downhole and breathing zone with PID. If no elemental volatiles are detected during the initial sampling event, subsequent sampling events will not require the use of a PID. POTENTIAL HAZARDS/RISKS CHEMICAL ® Hazard Present Risk Level: ❑ H OM ❑ L What Justifies Risk Level? Well development/groundwater sampling pose the potential for contact with contaminated water. Monitoring with a PID will be conducted in the well headspace (initial sampling event) after removal of the well cap, personnel will stand in an upwind direction (all sampling events). Mod. Level D will be used unless PID readings in the breathing zone indicate the need to elevate level of protection. Surgical/nitrile gloves and eye protection will be used to protect against contact. PHYSICAL ® Hazard Present Rick Levee: 13H 13M OL What Justifies Risk Level? Well development and sampling activities pose the potential for cuts, bruises, slip, trip, or fall and muscle or back strain. Personnel will have training for and implement safe work practices during sampling activities. Good housekeeping will be implemented to reduce risk of slip, trip and fall hazards. BIOLOGICAL ® Hazard Present Risk Level: ❑ H OM OIL What Justifies Risk Level? Work location is within an operational area that is covered with asphalt and some weeds and little debris in the area where animals, rodents or snakes could be present. Personnel will be cognizant of the work location and any potential presence of hazards. RADIOLOGICAL ❑ Hazard Present Risk Levd: ❑ H ❑ M ❑ L What Justifies Risk Level? None suspected. LEVELS OF PROTECTIONIJUSTIFICATION'. - Level D and Modified Level D — eye protection, steel toed boots, surgical gloves, leather gloves, and tyvek if collect samples of product in wells. For initial sampling event: Upgrade to Level C, if PID exhibits 1 RRU sustained above background the breathing zone and if benzene (IF SUSPECTED)is detected at less than 1 ppm with Draeger tubes. Stop work if > ; RRU or > = 1 ppm benzene sustained in breathing zone. If no volatiles are detected during the initial sampling event, subsequent events will not require monitoring. SAFETY PROCEDURES REQUIRED ANDIOR FIELD OPS UTILIZED Daily safety briefing of procedures and safe work practices for operations. Corporate Health and Safety Page 12 of 36 loomosew