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s <br /> mac. €•'" - i.T 7 s <br /> � <br /> - <br /> v�.. .k" a, r ,r,-.. -�'�'t-_��: ;� `..:-sy,�e`r'�-�1.'�3.. Fba a� =s �•t � a".�v.�'Y �3t -- � `� <br /> rx <br /> c` <br /> 2 -r <br /> 1 <br /> YAC' +" 5 <br /> triarch !9, f99! � <br /> tJnocal Station No, 6951, Slocklon, California <br /> structures. Applied GeoSystents assttute:s 110 responsibility for utilities not so located. 'mite <br /> first 5 feet will be hand auCered before any drilfin equipment is operated, <br /> Each of the areas where the borings will be {Trilled will be desigttated as Exclusion Zones. <br /> Only essential personnel will be allowed into art f—'xclusion Zone. When it is practical and <br /> local topographv allows, approximately 25 to 75 feet of space surrounding those E cIUsiori <br /> Zones will be designated as Contamination Reduction Zoites. <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 tinder any conditions. If for any reason 111e 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 ;yarning signs will be used when necessary to redirect motorists or <br /> pedestrians. <br /> EXPOSURE MONITORING PLIN <br /> It is not anticipated that project personnel exposure will exceed the TI-Vs or PE,IS of the <br /> k• 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 consistent]; 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 /> POSSIBLE EXPLOSINT AFNIOSPIlERES <br /> Gasoline has a flammable range from approximately 1A to 7.6 percent in air. One percent <br /> in air is equivalent to 10,000 ppm; thus the lower explosive limit (LE-L) is 14,000 ppm. <br /> Normally explosive levels may be reached in tanks,pits, or other confined spaces. Any area <br /> suspected of containing potentially explosive levels of gasoline will be evaluated with an <br /> intrinsically safe or explosion-proof combustible gas indicator (CGI). Personnel response <br /> will be based on the following action levels from CGI readings: <br /> - Less than 10 then Continue activities and <br /> percent of LEL* monitoring <br /> F 38032r4s 13 <br />