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- ___-- -------__�) <br /> Site Safety Plan October 15, 1990 <br /> ARCO Station No. 6020, Manteca, California AGS 30055-2S <br /> WORK ZONES AND SECURITY it"IEASURES <br /> �. The Project Manager will call Underground Services Alert (USA) and the utilities will be <br /> marked before any drilling is conducted onsite and the borings will be drilled at safe <br /> distances from the utilities. The client will also be advised to have a representative onsite <br /> to advise us in selecting locations of borings with respect to utilities or underground <br /> structures. Applied GeoSystems assumes no responsibility for utilities not so located. The <br /> first 5 feet will be hand augered before any drilling equipment is operated. <br /> Each of the areas where the borings will be drilled will be designated as Exclusion Zones. <br /> Only essential personnel will be allowed into an Exclusion Zone. When it is practical and <br /> local topography allows, approximately 25 to 75 feet of space surrounding those Exclusion <br /> Zones will be designated as Contamination Reduction Zones. <br /> Cones, wooden barricades, or a suitable alternative will be used to deny public access to <br /> these Contamination Reduction Zones. The general public will not be allowed close to the <br /> work area under any conditions. If for any reason the safety of a member of the public <br /> (e.g., motorist or pedestrian) may be endangered, work will cease until the situation is <br /> remedied. Cones and warning signs will be used when necessary to redirect motorists or <br /> pedestrians. <br /> EXPOSURE MONITORING PLAN <br /> It is not anticipated that project personnel exposure will exceed the TLVs or PELs of the <br /> materials;however,proper personal protective equipment will be worn while working at the <br /> site. In addition, the work area will monitored using a direct-reading combustible gas <br /> analyzer or an organic vapor meter to detect the concentration of the volatile hydrocarbons <br /> in the ambient atmosphere. <br /> If the lowest TLV or PEL is consistently being exceeded in the breathing zone, then a <br /> respirator must be worn. If the concentration exceeds 1,000 parts per million(ppm),the use <br /> of a respirator is inappropriate and personnel must withdraw from the site_ <br /> k,. POSSIBLE EXPLOSIVE ATMOSPHERES <br /> Gasoline has a flammable range from approximately 1.4 to 7.6 percent in air. One percent <br /> in air is equivalent to 10,000 ppm; thus the lower explosive limit (LEL) is 14,000 ppm. <br /> Normally explosive levels may be reached in tanks,pits.or other confined spaces. Any area <br /> �. 13 <br /> Applied GOOSYSt 9MS <br />