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Via.. Mm: 4 SECTION 4 WORK ZONES AND DECONPAMINATION 4.1 SITE WORK ZONES To reduce the spread of hazardous materials by workers from the contaminated areas to the clean areas, zones will be delineated at the Shell facility. The flow of personnel between the zones should be controlled. The establishment of the work zones will help ensure that: personnel are properly protected against the hazards present where they are working, work activities and contamination are confined to the appropriate areas, and personnel can be located and evacuated in an -, emergency. 4.1.1 Exclusion Zone Exclusion zones will be established at the Shell facility for all drilling activities, unprotected onlookers should be located 50 feet upwind of drilling activities. In the event that volatile organics are detected in the breathing zona all personnel within the exclusion zone must don Level C protection as discussed under "Personal protective Equipment and Action Levels". All personnel within the exclusion zone will be required to use the specified level of protection. No food, drink, or smoking will be allowed in the exclusion or decontamination zones. 4.1.2 Decontamination Zone Should It be necessary to establish an exclus.Lon zone, the decon- tamination zone will be utilized. This zone will be established between the exclusion zone and the support zone, and w`ll include the personnel and equipment necessary for decontamination of equipment and personnel (discussed be:3w). Personnel and equipment in the exclusion zone must .. pass through this zone before entering the support zone. his zone should always be located upwind of the exclusion zone. 4.1.3 Support Zone The suppc:t zone will include the remaining areas of the job site. Break areas, operational direction and support facilities (to include supplies, equipmene storage and maintenance areas) will be located in this area. No equipment or personnel will be permitted to enter the 4-1 _. Mill-16-SO688