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07 December, 199$ <br /> AGE-NC Project No:,95-0106 <br /> Page 3'of.7 <br /> County.regulations. An as=built monitoring well.,diagram is depicted in Appendix'B: The,newly', <br /> installed.well (MW-7) was surveyed by representatives of AGE relative to the elevation of well" <br /> _ - " . sea level:. <br /> IVIW 1' which had been assigned an arbitrary elevation of forty feet-above. <br /> 2.4. '.MONITORING WELL,PURGE,PROCEDURES <br /> % <br /> On 27 May;1998, a Solinst water level meter was used'to measure the depth to ground water.in each <br /> well relative to,the tops of the well.casings. After-'groundwater.deptlL measurements were collected, <br /> each monitoring well was purged using a,two-s#age'submersible pump. Approximately 4 to 10, ' <br /> gallons,of water were evacuated"from each monitoring.well,.(a minimum three well casing Volumes), <br /> as appropriate"for.each well. <br /> Temperature,'pH and conductivity were measured at 1-gallon or-2-gallon intervals,-as appropriate <br /> for each well, using an ICM model 521200'-water,anaiyzer to monitor stabilization of these ground <br /> water parameters. Field data,logs are included in Appendix C..Purged water was temporarily stored' <br /> on-site in 55-gallon drums.. <br /> 2..5 COLLECTION AND.ANALYSIS'OF GROUNDWATER SAMPLES `f <br /> Water samples were collected-from-'each monitoring,well using new disposable bailers-The samples <br /> were transferred into-40-m1 EPA-approved vials containing 0.5,'ml-of 18% hydrochloric acid:'as'a <br /> preservative: The•sample vials were.,then=labeled-with the.monitoring'well designation, date;time <br /> of sampI.ing and the sampler's,initials. The samples`were transported'tin a chilled,container"under n , <br /> r chain'of custody to MAI. <br /> 41 <br /> 'The samples.were','analyzed'for: ; <br /> TP <br /> H in accordant wit P <br /> e h E A method 801.5'modifaed <br /> I . <br /> BTEX in�accordance with'EPA method 8020,,- <br /> and. <br /> 020,,and. VOCs"and''oxygenated"fuel additives:-`DIPE; ETBE; MTBE; TBA 'and TAME in` <br /> accordance.with EPAmethod 8260 and $260m. <br /> Advanced GeoEfivironmcnlal,Inc.. <br />