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nnovative <br /> onstruction <br /> obfions - <br /> 9 . 2 REMEDIATION WORK AREA ZONES <br /> A three -zone approach will be used to control areas where site contaminants exist . Access will <br /> be allowed only after verification of appropriate training and medical qualification has been <br /> provided . The three - zone approach shall include an EZ, Contamination Reduction Zone ( CRZ ) and <br /> a Support Zone ( SZ ) . The three - zone approach is not required for construction work performed <br /> outside contaminated areas where control of site contamination is not a concern . <br /> Specific work control zones shall be established as necessary during task planning . Site work <br /> zones should be modified in the field as necessary, based on such factors as equipment used , air <br /> monitoring results, environmental conditions, or alteration of work plans . The following <br /> guidelines shall be used for establishing and revising these preliminary zone designations . <br /> 9 . 2 . 1 SUPPORT ZONE <br /> The SZ is an uncontaminated area ( trailers, offices, field vehicles, etc . ) that will serve as the field <br /> support area for most operations . The SZ provides field team communications and staging for <br /> emergency response . Appropriate sanitary facilities and safety and emergency response <br /> equipment will be located in this zone . <br /> Potentially contaminated personnel / materials are not allowed in this zone . The only exception <br /> will be appropriately packaged and decontaminated materials, or personnel with medical <br /> emergencies that cannot be decontaminated . <br /> 9 . 2 . 2 CONTAMINATION REDUCTION ZONE <br /> The CRZ is established between the EZ and the SZ, upwind of the contaminated area where <br /> possible . The CRZ provides an area for decontamination of personnel , portable handheld <br /> equipment and tools, and heavy equipment . In addition , the CRZ serves as access for heavy <br /> equipment and emergency support services . <br /> 9 . 2 . 3 EXCLUSION ZONE <br /> The EZ is where activities take place that may involve exposure to site contaminants and /or <br /> hazardous materials or conditions . This zone shall be demarcated to prevent unauthorized entry . <br /> More than one EZ may be established if there are different levels of protection to be employed <br /> or different hazards that exist in the same work area . The EZ shall be large enough to allow <br /> adequate space for the activity to be completed , including field personnel and equipment, as well <br /> as necessary emergency equipment . <br /> 59 <br />