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t0 November 1999 AGE-NC Project No. 98-0433 ' 'Mage 3 of 13, GRAB GROUND WATER SAMPLE COLLECTION Probe borings B2; B5, B 14; B 17 and B 1.8 were also sampled for ground water. A temporary, pre- cleaned, one-inch 0.01 slotted well screen was placed into the soil boring to a depth of 2.0 feet bsg. After sample retrieval, the water sampler was disassembled and cleaned. New Teflon tubing «was used to collect each sample. Each ground water sample was extracted by lo-,vering a modified Teflon ' bailer into the screen section of the temporary wells. Samples were collected in three laboratory- supplied, 40-ii1 volatile organic analysis (VOA) vials containing 0.5 ml of hydrochloric acid (18%) ' as sample preservative and in one 1-liter amber bottle according to Standard A-Tethods. `File labeled vials were placed in a chilled container under ice and transported udder chain-'of-custody to N!A[ .tor analysis. 3.4. LABORATORY ANALYSIS OF SOIL AND GROUND WATER SA1\-111LT:S CJ'round «water sans les and selected soil sarll Ales vc-c analvred L'or: p 1 M Total petroleurlr hydrocarbons quantified as gasoline and diesel (TPH-{) and "IPH-d) in accordance with EPA Method 8015 Ivlodifed, • Volatile aromatic hydrocarbons (benzene, toluene, ethyl benzene.and total xylene: BTE&X) in accordance with LPA Method 8020, • Oxygenated fuel additives: diethyl butyl ether (MTBE,); tertian}w brttyl alcohol (TBA), di isopropyl ether (DIPE), ethyl tertiary butyl ether (E'IBE) and tertiary amyl InctlIN1 ether- (TAiIN,1E) in accordance with EPA INTethod 8•:260 \,todiCed arld ' Two soil samples were transported to an independerrt illicrobiologist, Mr, A. Keith Kaufmann of Culver City. California. and were analyzed fiir physicochemical properties and microbiological enurlrci rtion. Dat;l obtained from the microbiological aiaci plrysicoclrerllical ' analysis will be used to determine possible effectiveness of bio-remediation as a remedUitiorl alternative. 3.5. GROUND WA"I'LR MONITORING \Vl-, INSTALLATION t Oil 19 itnd 20 Au-ust 1.999. AUT, condo ,< conducted a srtc nlvcstr� ttroil that rncluclecl the advancement of soil boriul s, collection and analysis of soil samples, and installation and developincnt of growid w;rter nlonaoring wells. Additionally, on 25 AuguSt 1999, ground water sarllIII eS VVeCc collected fronl arch of the ground water monitor-111g wells. Prior to illobiliz<rtion of drillirl ecluipillerlt, the site J Adronced Geol-'nvirasIII ell L,c.