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1 <br /> ' 20 December 2002 <br /> AGE-NC Project No 95-0185 <br /> ' Page 3 of 7 <br /> ' The oxygenated compounds di-isopropyl ether (DIPE), ethyl ternary-butyl ether (ETBE), <br /> methyl tertiary-butyl ether (MTBE), tertiary-amyl methyl ether (TAME), ternary butanol <br /> (TBA) in accordance with EPA Method 8260 Modified <br /> 1 <br /> 23 WELL INSTALLATION PROCEDURES <br /> ' Monitoringwell <br /> MW-5 and six ozone sparge wells (OPS1A through OPS313) were installed on <br /> ' 28 and 29 October 2002 <br /> 2 3 1 Drilling and Sampling <br /> Soil borings for the wells were advanced utilizing a CME-75 truck-mounted drill rig equipped with <br /> ' 8-inch diameter hollow-stem augers Soil boring MW-5 was advanced to approximately 30 feet bsg, <br /> soil borings OSP 1 B through OSP3B were advanced to approximately 50 feet bsg,soil boring OSP 1 A <br /> was advanced to approximately 30 feet bsg, soil boring OSP2A was advanced to approximately 35 <br /> ' feet bsg and soil boring OSP3A was advanced to approximately 40 feet bsg Soil cuttings were <br /> stockpiled within plastic and stored on-site,and rinseate from the washing of equipment was stored <br /> within 55 gallon drams The soil boring/well locations are depicted in Figure 2 <br /> tDiscrete soil samples were collected at 5-foot intervals during drilling to the total depth of soil <br /> boring MW-5, beginning at 5 feet bsg Soil samples were not collected from soil borings OSP1 <br /> ' through OSP3 because these borings were in close proximity to other on-site wells <br /> Soil samples were collected utilizing a California split-spoon sampler loaded with 2-inch by 6-inch <br />' brass sleeves The sampler was driven by dropping a 140-pound weight from a height of 30 inches <br /> The number of blows required to advance the sampler over each 6-inch increment of the 18-inch <br />' sampling interval was recorded on a boring log (Appendix C) by an AGE staff geologist <br /> Soil samples were preserved by covering both ends of the second brass sleeve with Teflon sheets, <br />' capping and sealing with tape Each preserved sample sleeve was labeled with soil boring <br /> designation, depth, time, date and sampler's initials <br />' 2 3 2 Logging <br />' Soil was extruded from a second brass sleeve and was screened for the presence of organic vapor <br /> . using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580A, 10 0 eV, calibrated to isobutylene), the OVM readings were recorded on the <br />' boring log <br />' Advanced GeoEnvironmental,Inc <br />