Laserfiche WebLink
1 lwi <br /> • 15 January 1998 <br /> AGE-NC Protect No 96-0254 <br /> Page 14 of 16 <br /> 94-pound sack of cement The grout will be placed by pumping through tremmie pipe Grouting <br /> procedures will be inspected by PHS-EHD personnel A traffic-rated well box will be installed over <br /> the wells, in accordance with County regulations <br /> Following completion of the monitoring wells, well elevations and locations will be surveyed by <br /> AGE personnel, relative to monitoring well MW-I <br /> 43 GROUNDWATER SAMPLING PROCEDURES <br /> Groundwater sample collection will be performed in accordance with pertinent applicable sampling <br /> protocols, details of which are presented below <br /> 4 3 1 Static Water Level Measurements <br /> Before sampling and during quarterly ground water monitoring, static water level and free-product <br /> thickness will be measured using an electric oil/water level indicator Water level data will be <br /> recorded to the nearest 0 01 foot from a reference point marked of the top of the PVC well casing <br /> Before and after each use,the electric oil/water level indicator will be washed in an Alconox solution <br /> and rinsed with water <br /> 4 3 2 Well Evacuation <br /> Subsequent to measurement of depth to water and prior to sampling, the well will be purged using <br /> a disposable bailer to ensure that the ground water sample is representative of the formation, rather <br /> than water standing in the well casing The well will be purged until 1) a minimum of three casing <br /> volumes is removed from the well, and/or 2) the field-measured ground water parameters pH, <br /> temperature and electrical conductivity have stabilized However, if a well is purged dry prior to <br /> evacuating three casing volumes, a ground water sample will be collected following 80 percent <br /> recovery of ground water level within the well or within 8-hours of well evacuation <br /> Purge water, free-product, and decontamination water generated during the ground water sampling <br /> activities will be contained in DOT-approved drums which will be appropriately labeled for storage <br /> Drums containing purge water will be stored on-site pending appropriate removal and disposal <br /> Advanced CeoEnvironmental, Inc. <br />