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9.0 SITE CONTROL AND WORK ZONES Contractors and subcontractors are responsible for the safety and protection of all personnel at work locations at the Site. Therefore, a control area will be established around each work location to protect untrained or unprotected workers from exposure to contaminants or other hazards. Access to the controlled areas will be limited to authorized work personnel and visitors who comply with the requirements of this HASP. Contractors and subcontractors will exercise control over their work areas whenever work operations are in progress, or when hazards related to the presence of chemical contaminants or physical hazards due to work activities may be encountered. At the conclusion of each work period, the SSO is responsible for ensuring that all work location hazards have been eliminated, in order to allow unrestricted access during non-working periods. The SSO is responsible for delineating the boundaries of each controlled work area, based upon requirements set forth in Section 9.1, results of monitoring obtained during work operations, and site-specific conditions (e.g., proximity of roads or buildings and terrain peculiarities). 9.1 CONTROLLED WORK AREAS Requirements Work locations where ongoing operations create the potential for contact with or inhalation of contaminants (above action levels), or exposure to physical hazards of work operations, are considered to be limited-access controlled areas. A Defined Work Zone (see areas in blue in attached site map) will be established at each such work location to prevent unauthorized access by personnel when there is the potential for exposure to chemical or physical hazards. Once work begins, no one will be allowed within this work zone without wearing the designated level of protective equipment and meeting the training requirements specified in this HASP. Where practical,a single entry/exit point should be established at the edge of each work zone to facilitate control of personnel entering the area,and as the location for the set-up of decontamination stations. Initial requirements for work zone set-up are presented here as a guide, however location-specific factors must also be considered. Work zones will be determined by the contractor and or subcontractor based on the type of operation being performed and specific equipment being used. Typical distances for initial set up of the work zone are: Excavation Operations: 10 feet will be cleared in all directions along the alignment of the trench. Drilling_Operation:Five feet in all directions will be cleared around the equipment. Decontamination: Thirty feet in all directions from the decontamination station location for large vehicle efforts conducted at a decontamination pad. For personal and small parts decontamination conducted at the work location, keep decontamination activities within the applicable work zone established for that operation. Work Zone Delineation and Security Work Zones should be delineated using traffic cones linked by yellow "CAUTION' tape, which provides a visible and physical barrier to prevent entry by unauthorized persons. Placement of vehicles and K rails can be used to provide additional security. The SSO/Task Leader will be responsible for maintaining the integrity of the perimeter during work activities, and will maintain a surveillance of the Work Zone to prevent unauthorized entry. If such an entry should occur,the trespasser will be immediately escorted outside the area, or all work at that location must cease. All personnel, equipment and supplies, which enter a work zone,must be decontaminated or containerized as waste prior to leaving. At the conclusion of all work location tasks, controlled areas must be properly cleaned so as to be non-hazardous ("clean") prior to relaxation of entry control procedures and PPE requirements. Due to other requirements at the site, it may be necessary to"safe" each work location at the conclusion of each work period to allow for`other"unrestricted uses of the site. 9.2 THE SUPPORT ZONE The areas, which he outside any defined work zone location, are considered to be free of work-related hazards. In this area the requirements for protective equipment usage can be relaxed, and tasks, which need do not present significant hazards (including administrative/management activities), can be conducted. For convenience, the uncontrolled areas of the site will be referred to as the Support Zone, however it should be understood that within this area the contractor and subcontractor Page 31