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03 August 1999 <br /> AGE-NC Project No. 95 -0121 <br /> Page 4 of 6 <br /> 3 .2. MICROBIAL ENUMERATION AND PHYSICOCHEMICAL ANALYSIS <br /> AGE proposes to advance two soil probe borings to determine feasibility of bioremediation at the <br /> site. Proposed soil boring locations are illustrated in Figure 2. <br /> Based on site conditions encountered beneath the former UST area, AGE proposes advancement of <br /> probe borings in the following locations : <br /> • Approximately 5 to 15 feet east of EW- 1 ; <br /> • Approximately 5 to 15 feet west of EW- l . <br /> Initially, each probe boring will be advanced to 40 feet bsg. However, total depths of probe borings <br /> will be based on field observations and field screening using an organic vapor monitor (OVM). Soil <br /> samples will be collected from each boring at five-foot intervals beginning at 15 feet bsg to the total <br /> depth. Field procedures for advancement of borings and collection of soil samples are presented in <br /> Section 4.2. <br /> Selected soil samples will be submitted to a microbiological laboratory for microbial enumeration <br /> and physicochemical analysis to determine feasibility of bioremediation at the site. Results of the <br /> bioremediation analysis will provide an evaluation of natural occurring micro-organisms and <br /> characterize physicochemical conditions at the site to support microbial growth and bioremedial <br /> activity. <br /> Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br /> findings and recommendations. <br /> 3 .3 . SIX MONTH OXYGEN RELEASE COMPOUND PILOT TEST <br /> AGE proposes to inject ORC into the subsurface utilizing nine soil probe borings spaced equidistant <br /> from at least one ground water monitoring source area. The borings will be located directly in the <br /> adsorbed petroleum hydrocarbon-impacted saturated soil plume at the site. General lithology beneath <br /> the site is depicted in cross sectional view on Figure 3 ; the estimated extent of petroleum <br /> hydrocarbon4ropacted soil is depicted in cross sectional view A - A ' in Figure 4. Proposed injection <br /> soil boring locations are illustrated in Figure 2. <br /> Based on soil contamination encountered beneath the former area, AGE proposes advancement of <br /> probe borings in the following locations : <br /> Advanced GeoEnvironmental, Inc. <br />