Laserfiche WebLink
surface/base of the stockpile boundary and the collection of the individual soil samples <br /> will be conducted as described below. <br /> Soil samples will be continually collected by advancing 4-foot long x 2.125-inch OD <br /> sampling tubes containing 1.5-inch ID clear plastic sample liners by a Geoprobe unit. <br /> Following each four-foot advancement, the contents of the sampling tube liners will be <br /> identified, classified, and logged. The borehole and sampling will be terminated when <br /> the leading sampling tube is advanced to a depth of at least four feet below the natural <br /> ground surface/base of stockpile boundary interface. The boundary will be determined <br /> by viewing the interface through the clear plastic sampling liners and by the surveyed <br /> elevation. <br /> Following completion of the borehole sampling,individual soil samples will be collected <br /> by cutting two segments from the plastic liners; one segment from 0 to 1 foot below the <br /> natural soil/base of stockpile boundary interface (surface sample) and the other from 2 <br /> to 3 feet below the interface (subsurface sample). The surface and subsurface sample <br /> liner segments will then be sealed with teflon sheeting, plastic end caps, and secured <br /> with teflon or elastic tape. The samples will be labeled as to the location, depth, date, <br /> time, requested analytical parameters, and sample ID. The samples will be placed in <br /> Ziplock plastic bags and stored in an ice-cooled chest for shipment to the analytical <br /> laboratory under chain-of-custody documentation. A blind duplicate surface sample <br /> will be collected. Due to the heterogeneity of the sample matrix (soil), this surface blind <br /> duplicate will not be an actual "duplicate" per se. Instead, it will be a duplicate sample <br /> collected from immediately below the original location. This blind duplicate will be <br /> labeled in a fashion as to avoid laboratory recognition and will be referenced for <br /> identification purposes in the field logbook. <br /> An additional nine discrete soil samples will be selected from the stockpiled soils. <br /> Three samples will be collected from the stockpile surface (0 to 1 foot - upper portion <br /> stockpile sample), three samples from the middle depth of the stockpile (mid portion <br /> stockpile sample), and three samples from the basal portion of the stockpile (0 to 1 foot <br /> above the natural ground/stockpile interface- deeper portion stockpile sample). These <br /> soil samples will be collected by cutting segments from the liners and prepared for <br /> shipment to the analytical laboratory as described above. <br /> There are several areas along the east side of the Site in which the stockpile is extremely <br /> scarce. A crude drainage ditch is present which may prohibit access to sample locations <br /> by the Geoprobe unit. In the event that this situation is encountered, the soil samples <br /> will be collected by a conventional stainless steel hand auger and slide hammer driven <br /> sampler/sampling tube. <br /> 031090-10(3) -3- CONESTOGA-ROVERS&ASSOCIATES <br />