Laserfiche WebLink
Field Practices and Procedures <br /> Page 2 <br /> contamination Steam cleaning effluent will be contained in 55-gallon drums and <br /> temporarily stored on site The disposal of the effluent will be the responsibility of the <br /> client <br /> I Drill cuttings generated during the drilling procedure will be stockpiled on site <br /> Stockpiled drill cuttings will be placed on and covered with plastic sheeting The <br /> stockpiled soil is typically characterized by collecting and analyzing composite samples <br />' from the stockpile Stratus Environmental will recommend an appropriate method for <br /> disposition of the cuttings based on the analytical results The client will be responsible <br /> for disposal of the drill cuttings <br /> Soil Sample Collection <br /> I During drilling, soil samples will be collected in cleaned brass, two by six inch tubes <br /> The tubes will be set in an 18-inch-long split-barrel sampler The sampler will be <br /> conveyed to bottom of the borehole attached to a wire-line hammer device on the drill <br />' rig When possible, the split-barrel sampler will be driven its entire length, either <br /> hydraulically or by repeated pounding a 140-pound hammer using a 30-inch drop The <br /> number of drops (blows) used to drive the sampler will be recorded on the boring log <br /> I The sampler will be extracted from the borehole, and the tubes containing the soil <br /> samples will be removed Upon removal, the ends of the lowermost tube will be sealed <br /> with Teflon sheets and plastic caps Soil samples for chemical analysis will be labeled, <br />' placed on ice, and delivered to a state-certified analytical laboratory, along with the <br /> appropriate chain-of-custody documentation <br />' Soil Classification <br /> As the samples are obtained in the field, they will be classified by the field geologist in <br />' accordance with the Unified Soil Classification System Representative portions of the <br /> samples will be retained for further examination and for verification of the field <br /> classification Logs of the borings indicating the depth and identification of the various <br />' strata and pertinent information regarding the method of maintaining and advancing the <br /> borehole will be prepared <br />' Soil Sample Screening <br /> Soil samples selected for chemical analysis will be determined from a head-space <br />' analysis using a PID or an FID The soil will be placed in a Ziploc° bag, sealed, and <br /> allowed to reach ambient temperature, at which time the PID probe will be inserted into <br /> the Ziploc bag The total volatile hydrocarbons present are detected by the PID and <br />' reported in parts per million by volume (ppmv) The PTD will be calibrated to an <br /> isobutylene standard <br />' Generally two soil samples from each soil boring will be submitted for chemical analysis <br /> unless otherwise specified in the scope of work Soil samples selected for analysis <br /> 1 <br />' M\Field Practices\Field P&P with CPT doc <br />