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d <br />� 4 <br /> Mj <br /> C <br /> s <br /> _f DRTL�LING AND SAMPLING <br /> ~� For all drilling and sampl'_ng activities, the following standard <br /> safety procedures uhall L•e employed: <br /> 1. All drllling ani sampling equipment should be cleaned before <br /> ` proceeding to the drill site. <br /> 2. At the drill or sampling site, sampling equipment should be ~!1~ <br /> a" cleaned ai:,%r ...h <br /> � Use, <br /> 3. Work it 'cleaner" areas should be conducted first where <br /> practical. <br /> C i <br /> 4. The minimum number of personnel necessary to achieve the obJec.- . <br /> tives shall be within 25 feet of the drilling or sampling <br /> activity. <br /> a.a <br /> ,.a 5. If emergency and btc:kup subcontracted personnel are. at the <br /> sire, they shotld remain 25 feet from the drilling or s=pling <br /> : activity, where practical. <br /> IA <br /> 6. Exclusion zones will be established within desigro?te� hot <br /> lines. Delineation of a hot line will reflect the interface <br /> between areas at and below a predetermined threshold con- <br /> taminant concentration, based on available data incluAlra the <br /> results of monitoring and ciaemacai analyses, information from <br /> site personnel regarding historical site. activities, and <br /> general observations, This determination will be made by the <br /> PM in conjunction with the 550 and site personnel. <br /> i 7. All unauthorized personnel will remain outside exclusivA. zones <br /> Ism <br /> at all times. <br /> i <br /> rz <br />