Laserfiche WebLink
..� *r/ <br /> I <br /> 02 December 2009716 <br /> 3 <br /> AGE-NC Project No. 96-0106 'In lv S'40i <br /> Page 7 of 10 <br /> I ot <br /> will be placed one foot from the bottom of the well at approximately <br /> feet bsg. After the well is <br /> fitted with the injection hose and cap the volume of water will be pumped into the well via <br /> centrifugal pump or gravity fed from the tank,which will be dependant on the rate the aquifer will <br /> accept the water. All water injected into the well will be metered during the duration of the test. <br /> As water enters the well an AGE representative will monitor the well for water surfacing or water <br /> refusal. If welling or surfacing occurs the injection will be terminated and the volume of water <br /> successfully injected into the well will be documented. <br /> 4.2. MONITORING WELL INSTALLATION <br /> One pilot soil boring will be advanced at the site to a maximum depth of 25 feet bsg utilizing a truck- C � <br /> mounted drill rig equipped with 8.25-inch diameter hollow-stem augers for installation of one <br /> ground water monitoring well.For lithologic purposes,soil samples will be collected from each soil <br /> boring at five-foot intery beginning at 5 feet bsg. Relatively undisturbed soil samples will be <br /> collecte In each of t e borings,'11sing a California modified split-spoon sampler fitted with 2-inch <br /> diameter, 6-inch Ion stainless steel sleeves. Soil samples will not be submitted for laboratory <br /> analysis. <br /> Soils from the remaining sample sleeves will be extruded and visually classified by an AGE <br /> representative in accordance with the Unified Soil Classification System(USCS).Additionally,soil <br /> samples will be field screened for the presence of volatile organic compounds using an organic vapor <br /> meter(OVM),equipped with a photo ionization detector(PID). Soil sample descriptions and OVM <br /> readings will be recorded on a log for each boring. <br /> 4.3. WELL COMPLETION AND WELL ELEVATION SURVEY <br /> i <br /> The pilot boring will be single-completed as a ground water monitoring well utilizing 2-inch <br /> diameter schedule 40 polyvinylchloride (PVC) 0.020-inch slotted well screen. The proposed well S <br /> will be screened from 5 to 25 feet bsg. J y,( r <br /> QY� <br /> After installing the well casing in each pilot boring, a filter paUk terial consisting of pre-washed <br /> #2/12 sand will be added through the augers to approximatelyfeet above the screened interval. <br /> Following placement of the filter pack, the well will be surged to assist in settling the filter pack. <br /> Additional sand will be added if settling occurs. <br /> A nominal one-foot bentonite seal will be placed above the filter pack to minimize the potential for <br /> grout penetration into the screened section of the well.The bentonite seal will be formed by pouring <br /> Advanced GeoEnvironmental,Inc. <br />