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WESTIC TECHNOLOGIES, INC. All excavated soils ( spoils ) shall be placed s minimum of two feet back from the edge of the excavation. The use of heavy and/or vibrating equipment (with the exception of the excavating equipment itself) adjacent to excavations shall be prohibited. All excavated areas shall be clearly marked and/or fenced to prevent unauthorized and/or accidental entry into work areas . Necessary foot and vehicle traffic shall be directed away from and around excavation work areas, and the routes clearly marked• Excavations shall be protected from intrusion of water. 8. 3. 6 CONFINED SPACE ENTRY The scope of work does not require personnel to enter into tanks, excavations , or other confined spaces. Field personnel are strictly forbidden to enter any confined spaces , for any reason, as a safety mandate of this SHP. Therefore, the SHP does not currently address confined space entry hazards and/or safety procedures. The SHP shall be revised , reviewed, and approved prior to any confined space entry work, should this operation become necessary. 8 . 3. 7 HOT WORK: Hot work may be defined as any operation which may potentially create a source of ignition. This operation is extremely dangerous when conducted anywhere that a flammable and/or explosive atmosphere (or fire hazard) may be present . because the tanks and pipelines to be removed and scrapped are expected to contain at least some residues ( if not measurable Quantities) of gasoline (i . e. , flammable or Combustible, depending on the substance) . sources of Ignition shall be eliminated during all operations that mey interact with tank atmosphere. For tank removal operations, all tanks shall be inerted using dry ice at 30 lbs. per 1. 000 gallons , tank atmospheres shall be checked using a properly calibrated combustible gas meter for percent oxygen (% Oz ) Prior to removal from the ground. AND prior to opening and scrapping. Representative samples Shall be taken from various locations/levels within each tank to ensure that the environment is consistant. Prior to lifting and cutting. atank atmospheres must be less than 10 percent LEL (<10% LEL) and less than 12 percent oxygen (<12% Oma ) .