1.1 意图 -本指南旨在描述为军事部署进行环境健康现场评估（EHSA）的科学方法。EHSA准备根据总统审查指令5的指示，评估可能影响部署人员健康的潜在环境暴露；参谋长联席会议主席备忘录MCM-0006-02；和国防部指令6490.3。本指南旨在帮助用户开发部署站点的概念站点模型（CSM）。CSM用于定义暴露途径。暴露途径有助于评估潜在的健康影响。本指南的目标是确定可能影响部署人员健康的完整和潜在完整暴露途径。 1.2本指南提供了一系列步骤，旨在获得足够的信息，以评估可能影响部署人员健康的潜在环境暴露。当关于部署区域的信息有限时，它最适用。如果环境卫生专业人员在部署前规划活动中发现，存在足够的信息来评估潜在环境暴露的健康重要性，则无需完成此过程中描述的数据收集活动。在这种情况下，环境健康专业人员将记录其未完成数据收集活动的理由。一个明显的例子是部署到发达县的一个大城市。 1.3该过程产生的信息将用于环境健康风险评估。环境健康风险评估不在本指南的范围内。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管要求的适用性。

1.1 Purpose —The purpose of this guide is to describe a scientific methodology for conducting environmental health site assessments (EHSAs) for military deployments. EHSAs are prepared to evaluate potential environmental exposures that may impact the health of deployed personnel as directed by Presidential Review Directive 5; Chairman, Joint Chiefs of Staff memorandum MCM-0006-02; and Department of Defense Instruction 6490.3. This guide is intended to assist the user in developing conceptual site models (CSMs) for deployment sites. CSMs are used to define the exposure pathways. The exposure pathways assist in the evaluation of potential health impacts. The goal of this guide is to identify complete and potentially complete exposure pathways that may affect the health of deployed personnel. 1.2 This guide provides a series of steps designed to obtain sufficient information to evaluate potential environmental exposures that may affect the health of deployed personnel. It is most applicable when only a limited amount of information about the deployment area is available. If it becomes apparent to the environmental health professional in predeployment planning activities that sufficient information exists to evaluate the health significance of potential environmental exposures, it will not be necessary to complete the data collection activities described in this process. In this event, the environmental health professional will document their justification for not completing the data collection activities. An obvious example would be deployment to a major city in a developed county. 1.3 Information generated by this process will be used for environmental health risk assessments. Environmental health risk assessments are beyond the scope of this guide. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.