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26 December 1998 r <br /> AGE-NC Project No. 97-0312 <br /> Page 3-of 7 . <br /> 3:3. . . IN-SITU GROUND WATER SAMPLE COLLECTIOW = <br /> During the_sail assessment activities, one "grab" ground water sample will-be collected from the = <br /> borings advanced near the former UST locations.and near the dispenser island acid will be submitted.' <br /> for laboratory-anal sis. Groundwater sample collection rocedures are-presented in Section 4.3."' <br /> 3.4. ' . MONITORING WELL INSTALLATION, . ND 'DEVELOPMENT <br /> One additionalground water.monitoring-well{will be installed approximately 30.feet north of the <br /> former UST cluster location, adjacent to the soil.boring described-above.=Due-to the diff culties- <br /> involved,with•partially-backfilling a boring and`installing.the well:in the same boring a.second <br /> �. boring -will be advanced•; without•'soil ,sampling;-for-.,the well installation. The 'ground water:, <br /> monitoring well,will,consist 6f.20 feet of screen section.installed-across}the observed•water table. : 3 <br /> level. Based on the current ground,water_level:-at the site,the total depth}of the monitoring well will'. <br /> be approximately 65 feet:bsg. _ T <br /> Following installation,'the well'will be developed m order'to maximize water flow mto'the well and _ <br /> ' minimize the amount of fine-grained sediment drawn.into-the welfdurin um in 'or Bailin <br /> g p P.. g g <br /> Procedures .for' well completion and-development; are presented .in Sections.-A.5. dnd 4.6.,s;:_ <br /> respectively, . . • - �_x v <br /> 3.5. ADDITIONAL'SOII: SAMPLING ; <br /> -Following receipt of analytical.resiilts f r the initial four soil borings:_described above;approximately: <br />~. 12 additional soil borings will be advanced around the former dispenser islands acid LJST-locations.. -_ <br /> Borings will be advance to the ve Ica extent:o ,impac e e ening an ata R <br /> obtained from`previous borings installed'at the.site._SwIilirig wrll.be performed�in-accordance with <br /> ` <br /> pro cedure5:outlined in Section 4 2 .The'proposed:boring locations are illustrated on,Figure 2: <br /> 1. GROUND WATER:SAMPLE COLLECT-IONr . <br /> Following installation,the view monitoring well will be-added to the-existing quarterly ground water =- rr <br /> ~ monitoring program conducted at-the site. m Ground water sale collection. rocedures are described- <br /> in <br /> escribed <br /> in Section 47 ti x t p ' p <br /> Adrairced GeoEnvironmenlal,Inc ' F <br />