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wash/rinse chemical resistant outer glove, then remove as appropriate <br />remove and throw out inner disposable nitrile liner gloves in designated, lined <br />receptacles <br />Level C: Segregated Equipment Drop <br />- wash/rinse outer boots <br />- washh-inse chemical resistant outer gloves, then remove tape and gloves <br />- remove chemical resistant suit (remove by rolling down suit from the inside) <br />- remove outer boots <br />- remove first pair(s) of disposable gloves <br />- remove respirator, hard hat/faceshield and properly dispose of cartridges; wash <br />respirator <br />- remove last pair of disposable nitrile liner gloves <br />Level B: Segregated Equipment Drop <br />- wash/rinse outer boots <br />- wash/rinse chemical resistant outer gloves <br />- cross hotline (into clean area) and change air tanks, then redress or <br />- cross hotline (into clean area) <br />- remove boots and gloves <br />- remove SCBA, if worn over chemical resistant suit <br />- if SCBA is worn under the suit, remove the chemical resistant suit, then the <br />SCBA <br />- remove hard hat <br />- remove disposable nitrile liner gloves <br />5.6 DRILLING PROCEDURES <br />A digsafe number must be obtained from the appropriate agency prior to drilling, excavation or <br />trenching. To determine presence of subsurface metal utility lines, tanks and/or drums (if <br />suspected), a metal detector should be used before excavating on a Site. <br />During the operation, two persons (one designated as "operator" and the other as the "helper") <br />must be present at all times. The helper (whether Versar personnel or subcontractors) must be <br />instructed as to the whereabouts of the emergency shut-off switch. Every attempt must be made <br />to keep unauthorized personnel from entering the work area. If this is not possible, the operation <br />should be shut down until the area is cleared. The Site Safety Officer or the Field Team Leader <br />has the authority and responsibility to shut down the excavating operations whenever a hazardous <br />situation is deemed present. <br />The arm of any equipment should maintain a preferred clearance of 20 feet fiom any overhead <br />electrical cables, with 10 feet being the minimum. All operations will immediately cease during <br />3025-03/114700.4766.023/NL23'03 16 <br />