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A-2 The soil generated from the soil borings was stored in 55-gallon drums and labeled with the corresponding boring number, date, and address of the facility 2.0 DECONTAIVIINATION AND DISPOSAL PROCEDURES 2.1 Equipment Decontamination All equipment that came in contact with potentially contaminated soil, air, or water was decontaminated before each use Decontamination consisted of steam-cleaning, a high-pressure, hot-water rinse, or tnsodium phosphate (TSP) wash and freshwater rinse, as appropriate Drilling and sampling equipment was decontaminated as follows 1 Drill ng augers, drill rods, and drill bits were steam-cleaned prior to use and between borings Visible soil, grease, and other impurities were removed 2 Soil sampling equipment was steam-cleaned prior to use and between each boring Prior to individual sample collection, sampling devices were also cleaned in a TSP solution and rinsed twice in clean water Any visible soil residue was removed 3 Stainless steel or brass soil sampling tubes were washed in a trisodium phosphate (TSP) solution and rinsed with clean water 3.0 FIELD MEASUREMENTS Field data were collected during various sampling and monitoring activities, this section describes routine procedures followed by personnel performing field measurements The methods presented below were intended to ensure that field measurements were consistent and reproducible when performed by various individuals 3.1 Buried Utility Locations Prior to commencement of work on site, AMV contacted appropriate utility companies to have underground utility lines located AMV researched the location of all underground utilities using past site construction and surveying plans and by conducting a ground reconnaissance of the area All work associated with the borings was preceded by hand augering to a minimum depth of 5 feet below grade to avoid contact with underground utilities