Laserfiche WebLink
30 September 1999 <br /> AGE-NC Project No. 99-0646 <br /> Page 2 of 3 <br /> using AGE's Geoprobe soil probing unit. <br /> Probings will be advanced near the former dispenser location. If a probe boring encounters intensely <br /> impacted soil, subsequent probing locations will be stepped out to define the plume. The proposed <br /> probing locations are illustrated on Figure 2. <br /> If ground water is encountered, grab water samples will be collected from selected probings. <br /> Samples will be collected using a Geoprobe water sampling assembly and placed in 40-m1 VOA <br /> vials containing 0.5-m1 of hydrochloric acid as a preservative. <br /> 3.2. EQUIPMENT DECONTAMINATION <br /> All Geoprobe sampling tools and sample liners used for sample collection will be thoroughly rinsed <br /> with clean water after washing with a solution of Alconox. Geoprobe rods, which come into contact <br /> with sampled soil, will be cleaned between,borings. <br /> 3.3. LABORATORY ANALYSIS <br /> Selected soil and grab water samples will be transported, under chain-of-custody, in a chilled <br /> container,to a state-certified laboratory for analysis. Selected samples will be analyzed for TPH-g, <br /> volatile aromatics (benzene, toluene, ethylbenzene and xylenes: BTEX), and fuel oxygenates in <br /> accordance with EPA methods 8015m/5030,8020/602 and 8260,respectively.The laboratory report, <br /> testing methods, laboratory quality assurance/quality control (QA/QC)reports and sample chain-of- <br /> custody documentation will be presented in a report with the findings and recommendations. <br /> 4.0. PROCEDURES <br /> 4.1. SOIL PROBE BORING INSTALLATION AND SAMPLING <br /> The following procedures will be performed for the installation of probe borings: <br /> 1. Notify the PHS-EHD at least 48 hours prior to commencement of any r . <br /> 2. Advance four soil probe borings at the site to depths of approximat y 30 feet belo ace <br /> grade (bsg)using a van-mounted Geoprobe probing unit equipped w' -inch diameter <br /> rods. Probings will be advanced near the former dispenser location. If hydrocarbons are <br /> encountered based on field observations,probings will be advanced below the impacted soil <br /> interval to the extent practicable.The proposed probe boring locations are depicted on Figure <br /> Advanced GeoEnviron mental,Inc. <br />