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SITE HEALTH & SAFETY PLAN GrECMATRUX` <br /> Task Instrument Frequencl <br /> 1. Drilling and Well Installation PID Periodic <br /> 2. Well Development None <br /> [3. Initial Well Sam lin None <br /> 6.1 ACTION LEVELS <br /> Listed below are OSHA permissible exposure limits (PELs)and ACGIH recommended threshold <br /> limit values (TLVs) for the chemicals of concern at the site. <br /> Chemical Cal-OSHA PEL ( m) ACGIH TLV ( m) <br /> Ammonia 25 25 <br /> Sulfolane None Available None Available <br /> 1,1,1-trichloroethane 350 350 <br /> Trichloroethene 25 50 <br /> State of California Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65) <br /> information for the site: (Applicable warning is checked) <br /> ✓ WARNING: This site contains a chemical known to the State of California to cause <br /> cancer. <br /> ✓ WARNING: This site contains a chemical known to the State of California to cause <br /> birth defects or other reproductive harm. <br /> Additional information may be obtained from Mary Sue Philp at(510) 663-4100. <br /> Respirators shall be worn when air monitoring indicates that concentrations exceed the following <br /> action levels: <br /> Wear respirator if PID reads >_ 1.0 ppm (sustained reading in the breathing zone) <br /> Stop work if PID reads >_ 5.0 ppm(sustained reading in the breathing zone) <br /> An explosion hazard shall be assumed to exist where air concentrations of the following <br /> chemicals exceed their respective lower explosion levels (LELs). <br /> Chemical LEI. <br /> None <br /> Stop work and notify the PM or PHSO if CGM reads >_ 10% LEL. <br /> Evacuate area and notify appropriate emergency services if CGM reads ;2: LEL. <br /> LAPROJEC M741.000\6741-07.doc 12 <br />