ARCHIVED REPORTS_XR0008153 - Laserfiche WebLink

Home Browse Search

'A 07 January 1998 ( t �' AGE-NC Project No 95-0128 �� Q Page 3 of 7 g equipped with 1 125-inch probe rods Proposed probe borin ocations are illustrated in Figure 1 Soil samples will be collected at depths of 30, 35 and 4 feet below surface grade (bsg) using a Geoprobe sampler and four brass sleeves The first sample will be collected to test the capillary fringe for hydrocarbons, the lower two to gain soil compositional information to map preferred ground water flow paths Upon sample retrieval, the second brass sleeve will be removed from the sampler The ends of the sleeve will be immediately covered with Teflon tape or aluminum sheets, capped and sealed with tape Each sample will be placed in a chilled container for transportation to a state-certified laboratory Each sample sleeve will be labeled with the following boring location, depth, time, date and sampler's initials Grab ground water samples will be collected from the probe borings using a Geoprobe water sampling assembly After collection, samples will be stored in a chilled container and transported to a state-certified laboratory 32 DRILLING AND SOIL SAMPLING . The soil borings to be completed as ground water monitoring wells will be advanced utilizing a truck-mounted, hollow-stem drill rig equipped with 8 25-inch or 10-inch hollow-stem augers AGE will advance 8 25-inch borings for single-completed ground water monitoring wells and advanced 10-inch borings for dual-completed ground water monitoring wells Soil samples will be collected at depths of 30, 35 and 40 feet using a California split-spoon sampler and brass sleeves The sampler will be driven by dropping a 140-pound weight from a height of 30 inches The number of blows required to`drive each 6-inch length of the sampler (blow counts) are to be recorded on boring logs compiled by an AGE staff geologist Upon sample retrieval,the leading brass sleeve will be removed from the sampler The ends of the sleeve will be immediately covered with Teflon sheets and sealed with plastic end caps secured with tape The preserved samples will then be immediately placed under ice in a chilled container for transportation to a state-certified laboratory Each soil sample sleeve will be labeled with boring location vertical denth Snmpling time bate nnrl camn1Pr1c ir-mialo 3 3 EQUIPMENT DECONTAMINATION All sampling tools and brass sleeves used for sample collection will be thoroughly rinsed with clean water after washing with a solution of Alconox All Geoprobe rods are cleaned prior to advancement iin each probing location Advanced GeoEmironmental,Inc