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21 May 1999 <br /> AGE-NC-96-0235 <br /> Page 2 of 4 <br /> both prepared by AGE f <br /> ,3.0. SCOPE OF WORK <br /> Two distinct areas of concern will be addressed The scope of work will include the advancement <br /> and sampling'of four soft bonngs to a depth of approximately 60 feet below surface grade (bsg) at <br /> the former UST No 3 location and two soil borings at the former UST cluster location Additional <br /> investigation and, if necessary,remediation,will be addressed in a subsequent work plan addendum <br /> 3 1 PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> A'dnlling permit with an expiration date of 25 August 1999 is on-file with the PHS-EHD Prior to <br /> mobilization,the soil boring locations will be clearly marked and a utility clearance obtamed through <br /> Underground Service Alert <br /> 3 2 SOIL SAMPLE COLLECTION <br /> AGE proposes to advanc 'four soil borings to a minimum depth of 60 feet bsg in the vicinity of the <br /> former UST No 3 locatio Two borings 11 be advanced at the former location of the UST cluster <br /> and dispenser area to depths o eet and 20 feet bsg Proposed boring locations are illustrated in <br /> Figure 2 <br /> Total depths of the borings will be based on field observations and field screening using an organic <br /> vapor monitor equipped with a photo-ionization detector (PID) precalibrated to isobutylene Soil <br /> samples will be collected from each boring at five-foot intervals beginning at 20 feet bsg at the <br />' former UST No 3 location and beginning at depths of 15 feet and 5 feet at the former UST cluster <br /> and dispenser locations Borings may be extended to greater depths or additional borings advanced, <br /> based upon field data Field procedures for advancement of borings and collection of soil samples <br /> were presented iri the Monitoring Well Installation-Work Plan - Mas ch 1998, prepared by AGE - - <br /> 33 IN-SITU GROUND WATER SAMPLE COLLECTION <br /> During the soil assessment activities, "grab"ground water samples will be collected from the borings <br /> advanced at the former UST cluster area and will be submitted for laboratory analysis Ground water <br /> sample collection procedures are presented in Section 4 1 ` <br /> r <br /> Advanced GeoEnvironmentab Inc <br /> 1 ` <br />