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, <br /> I07 December,1.998 <br /> AGE-NC Project No. 95-101.06 r <br /> 'Page 2 of.7 <br /> , <br /> run: Both ends of the brass'sleeve collected for laboratory arialysis:.were covered with-Teflon sheets, <br /> capped and sealed°with tape. Tlie'sample sleeves were then labeled with tl3e.Boring designation, <br /> sample depth;date, time of sampling and the sampler's-initials. ' " <br />' A ."grab" water,sainple.was collected from boring B 15', using a.disposable bailer. Ground water Y <br /> intruded'into the boring; no odor of petroleum was observed. Immediately upon'retrieva1, the water <br /> sample was,transferred'into chilled 40-m1'EPA-approved VOA vials,containing 0:5 ml hydrochloric <br /> acid.I8%�as a sample preservative.:'The sample vials were then labeled with the boring'designation, <br /> date, time of samplingand the`sampler,`s initials.' <br /> The samples were stored in',a chilledcontainer;;and traspor <br /> . nted under 'chain-of-custody' to <br /> McCampbell Analytical, Inc: (MAI') fi.Pacheco, California. Selected samples-were analyzed for:, n <br /> • Total petroleum hydrocarbons quantified as,gasoline (TPH-g)- iri accordance with-EPA <br /> Method 8015-modified,' <br /> Volatile aromatics (ben.iene,joluene, ethyl benzene and total xylene: BTEX) in accordance. <br /> with EPA method 8020. = _ <br /> Volatile organic compounds (VOCs) and oxygenated fuel additives methyl tertiary butyl <br /> ether(MTBE);.tertiary-butyl'alcbhol (TBA), di-isopropyl:, ether (DIPE), ethyl tertiary butyl,. <br /> ether'(ETBE)and tertiary amyl methyl ether.(TAME) in accordance with EPA method 8250 <br /> .. and 8260(m). ; <br /> 2.2: LOGGING ,.i.. <br /> Soil "was extruded•,from.-the'-second brass, sleeve and screened'.for the ,presence ofpetroleum <br /> ` hydrocarbon,vapor using OV1vI: The;OVMreadings'wererecorded on;the boring logs. The soil F <br /> was`then,visually described in•accordance with,•the�•Unified Soil Classification System (see Aoring <br /> Logs Appendix A).., . , <br /> WELL'COMPLETION <br />' Boring,B 14,was'completed-gas ground .water monitoring ;well' MW=7 using a.2-inch diameter,' ' <br /> schedule 40 PVC casing with 0102 A' slotted 'screen from,approximately 4 to 14.feet bsg.'The filter.' <br /> pack was installed using#2 L-onestar sand from 3 to -14 feet bsg. Bentonite chips were,used'to make <br /> r a one-foot plug and the remaining annular space was backfilled to the surface with portland cement. <br /> A traffic-rated wellbox'(8-inch diameter)in concrete"was installed over the well, in accordance with. <br /> Advanced GeoEnvironmental, <br /> S <br />