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CEMI contacted Underground Service Alert (USA) to identify underground <br /> utilities that may exist within the work area. It should be noted that USA <br /> typically will only locate the utilities within the public easements and will not <br /> locate utilities within public property <br /> • CEMI directed the performance of a geophysical survey to identify subsurface <br /> obstructions, UST location and orientation, utilities, and pipelines within the work <br /> area All subsurface features were marked and labelled on site. <br /> • CEMI obtained a Well Permit (Appendix C) and supervised the advancement of <br /> four soil bonngs including representative soil sampling and geologic logging <br /> Three (3) soil borings were advanced to twenty feet bgs and one (1) soil boring to <br /> ten feet bgs The twenty foot soil borings were advanced in close proximity to <br /> the UST's and adjacent to the product delivery lines to determine if there has <br /> been a release of petroleum product from the UST's The ten foot bgs soil boring <br /> was advanced in close proximity to the product fill line to determine if there has <br /> been a leak in the product piping The first five feet of each boring was band <br /> augured to prevent damage to any unidentified subsurface utilities and to provide <br /> worker safety Soil sampling included head space (vapor) field screening of each <br /> obtained sample with the use of a Flame Ionization Detector (FID) The field <br /> screening of the soil samples assisted in the determination of which samples were <br /> to be submitted for laboratory analysis <br />