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1 <br /> ' ARCADIS SOP:Soil Drilling and Sample Collection a <br /> Rev.A 1 I Rev Date: March 3,2009 <br /> Radio Frequency Detector(RFD) <br /> ' 0 Ground Penetrating Radar(GPR) <br /> • Any other method that may give ample evidence of the presence or location of <br /> ' subgrade utilities. <br /> Overhead power lines also present risks and the following safe clearance must be <br /> ' maintained from them. <br /> Power Line Voltage Minimum Safe Clearance <br /> ' Phase to Phase(kV) (feet) <br /> 50 or below 10 <br /> ' Above 50 to 200 15 <br /> Above 200 to 350 20 <br /> Above 350 to 500 25 <br /> ' Above 500 to 750 35 <br /> Above 750 to 1,000 35 <br /> ANS!standard s30.5-1994, 5-3.4.5 <br /> Avoid using drilling fluids or materials that could impact groundwater or soil quality,or <br /> ' could be incompatible with the subsurface conditions. <br /> Water used for drilling and sampling of soil or bedrock, decontamination of <br /> ' drilling/sampling equipment, or grouting boreholes upon completion will be of a quality <br /> acceptable for project objectives. Testing of water supply should be considered. <br /> ' Specifications of materials used for backfilling borehole will be obtained, reviewed and <br /> approved to meet project quality objectives. <br /> ' V. Health and Safety Considerations <br /> Field activities associated with overburden drilling and soil sampling wiil be performed <br /> in accordance with a site-specific HASP, a copy of which will be present on site during <br /> ' such activities. <br /> gboDxOr*r&afvmthd. s2=&yd,vgakVy 8"6%31510.seY driM+g sntl m1 wbodanAne <br />