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55 9.0 SITE CONTROL MEASURES ICS shall be responsible for conducting operations at the work area in a controlled manner to minimize the possibility of contact with contaminants and prevent the spread of pollutants by personnel or equipment leaving the work area or exclusion zones. As needed, ICS shall delineate specific operations or tasks that will occur and shall institute specific site and work area entry and decontamination procedures at designated control points. Three (3) work zones may need to be established as follows: • An exclusion/contamination zone, • A contamination/reduction zone, and • A support/clean zone. The HASP may include a map or diagram showing the proposed work zones and a description of the work area control plan. Actual site conditions will determine the final location of these zones. 9.1 SITE CONTROL PLAN Site control is established to prevent the spread of contamination throughout the site and to ensure that only authorized individuals are permitted into potentially hazardous areas. The SSO will implement site control procedures, including the following bullet items as needed. • Establish support, contamination reduction, and exclusion zones. The exclusion zone will consist of excavation and a downwind area, to be changed as needed. Delineate using delineators, snow fences, curtain tapes, and signs. The support zone should be upwind of the site. Use access control at entry and exit from each work zone. • Establish onsite communication consisting of the following: o Line-of-sight and hand signals. o Air horn; and o Cellular telephone or two-way radio, if available. • Establish off-site communication. • Establish and maintain the “buddy system.” 9.2 REMEDIATION WORK AREA ZONES A three-zone approach will be used to control areas where site contaminants exist. Access will be allowed only after verification of appropriate training and medical qualification has been