Laserfiche WebLink
APPENDIX C <br /> DRILLING AND SAMPLING PROTOCOL <br /> DRILLING <br /> Prier to any drilling or excavation activities, <br /> Underground Service Alert (USA) will be contacted to mark all <br /> undergro=und utility lines in the vicinity of the proposed <br /> work.. All necessary permits will be obtained and 48 hour <br /> notification to the lead agency will be given prier to the <br /> commencement of drilling. <br /> Borings will be drilled using hollow-stem auger with no <br /> less than 3 1/4-inch diameter ( ID) and 6 3/4 o=utside diameter <br /> (OD) . All drilling equipment will be thoroughly steam- <br /> cleaned before drilling begins to prevent the introduction ion of <br /> contamination from off-site, and between borings to prevent <br /> crass-contamination. <br /> All borings will be logged by a qual i f ied geologist <br /> using the Unified Soil Classification System. The color, <br /> texture, moisture, plasticity ( if applicable) , consistency, <br /> pertinent soils or- bedrock characteristics, and any evidence <br /> of contamination will be noted on the logs. All water- <br /> bearing zones and the depths at which they were encountered <br /> will be noted on the lags. All . logs will be reviewed by a <br /> California State Registered Civil Engineer, Engineering <br /> Geologist or Geologist and verified correct. A sample of the <br /> material logged is to be collected and retained for further <br /> analysis and verification. <br /> The borings will be drilled in such a manner as to <br /> prevent cross-contamination between strata. Exploratory soil <br /> borings will be backfilled with a nine sack sand/cement <br /> slurry. <br /> The cuttings from the drilling operation will be <br /> containerized in plastic 55-gallon drums and stored on-site <br /> for later treatment and/or disposal. The treatment/disposal <br /> will remain the responsibility of the client unless other, <br /> arrangements have been made. It is intended that the <br /> contaminated cuttings be incorporated into the soil treatment <br /> program and abandoned in place after treatment. <br /> SAMPLE HANDLING <br /> All soil and groundwater samples will be properly <br /> labeled with project number, date collected, and sample <br /> identification number. All samples will be handled using <br /> standard Chain of Custody procedures. Field records will <br /> "'document the above information and other significant data, <br />