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. HHR 12 192 14.43 C I 715821 P.g. <br /> organic vapor analyzer with a photoionization detector. Each lithoiogic description and <br /> results of the field screening is recorded on a log which is unique for each boring <br /> constructed. <br /> DISPOSAL OF CUTTINGS AND FLUIDS <br /> Drilled cuttings and waste materials generated from each soil boring will be collected and <br /> placed into 55-gallon capacity steel drums. In the event that fluids are also generated during <br /> the drilling of a soil boring, drums will be filled such that soil is maintained separate from <br /> fluids. Waste materials, such as personal protective clothing, will be placed at the top of the <br /> drums containing soil. If several drums of soil are generated from a single boring, attempts <br /> will be made to place these materials into drums containing soil suspected of containing <br /> chemicals. Otherwise, soil and water collected from borings will be placed into their <br /> respective drums until each are full. <br /> GROUNDWATER ITORING LL CO_N'�TR3J�TON <br /> The following presents C.I .C., Inc. standard protocol for the construction of groundwater <br /> monitoring wells. <br /> MATERIAL SPECIFICATIONS <br /> Groundwater monitoring wells will be constructed of PVC blank casing and well screen. All <br /> well casing joints will be threaded. Field welded or glued joints will not be used. The well <br /> screen slot size will be surrounded by a mesh filter pack. Figure B-1 illustrates a typical <br /> monitoring well design. Dimensions for monitoring wells will be determined. The <br /> dimensions will be selected on the basis of our evaluation of field conditions and, in selected <br /> instances, one the results of limited sieve analysis of aquifer material. <br /> CONSTRUCnON PROCEDURES <br /> Monitoring wells will be constructed by placing the well casing string into the hollow portion <br /> of the auger flights. Filter pack material, bentonite, and annular space sealing materials will <br /> be installed into the annular space between the monitoring well casing and the hollow auger <br /> flights using the following procedures: <br /> 1) The unit annular volume (W per ft) between the well casing and the auger flights will <br /> be calculated. <br /> L) The auger flights will be raised as material is installed into the annular space so that <br /> auger flights act as a tremie fine and the borehole walls will be protected throughout <br /> the well construction activities. <br /> nsxax.ms A-2 <br />