1.1 本指南介绍了在对地下水监测井进行采样时，应在现场记录哪些信息以及如何记录这些信息。遵循这些建议将为大多数监测程序提供充分的文件。在某些情况下，可能需要记录额外或不同的信息，或两者兼有，以彻底记录采样事件。在其他情况下，可能没有必要记录本指南中建议的所有信息。文件的级别将基于特定场地的条件和监管要求。 1.2 本指南仅限于地下水取样事件的书面文件。 可以使用其他记录方法（即电子和视听），但本指南中未提及。本指南中涉及的具体活动包括静态水位测量、监测井吹扫、监测井取样、现场测量、地下水样品制备和地下水样品运输的文件。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本指南提供了有组织的信息收集或一系列选项，不建议采取具体行动。本文件不能取代教育或经验，应与专业判断结合使用。并非本指南的所有方面都适用于所有情况。本ASTM标准并不代表或取代必须判断特定专业服务是否充分的护理标准，也不应在不考虑项目许多独特方面的情况下应用本文件。本文件标题中的“标准”一词仅表示该文件已通过ASTM共识程序批准。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 4.1 在对地下水监测井进行采样时，彻底记录所有现场活动是非常重要的。应保留足够的现场数据，以便重建可能影响样本完整性的程序和条件。 所产生的现场数据对于解释从实验室样品分析中获得的化学数据至关重要。现场数据和观测结果也可能对分析实验室人员有用。 4.2 由于法规和其他信息的性质不断变化，建议用户在启动采样活动之前彻底研究与包装和运输相关的要求。 注1: 每次对监测井取样时，应尽可能仔细地重复对单个地下水监测井的取样。这减少了由于采样可变性而导致的化学参数的可变性，采样可变性是期望的结果。 其目的是通过在每个单独的井重复采样方案来检测化学性质的变化。这并不意味着所有井都以相同的方式进行采样，也不意味着禁止对采样方案进行更改，前提是这些采样方案经过规划和记录。 注2: 本标准产生的结果的质量取决于执行该标准的人员的能力以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常被认为能够胜任和客观的测试/取样/检查等。 本标准的使用者应注意遵守实践 D3740 其本身不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了评估其中一些因素的方法。

1.1 This guide covers what and how information should be recorded in the field when sampling a groundwater monitoring well. Following these recommendations will provide adequate documentation in most monitoring programs. In some situations, it may be necessary to record additional or different information, or both, to thoroughly document the sampling event. In other cases, it may not be necessary to record all of the information recommended in this guide. The level of documentation will be based on site-specific conditions and regulatory requirements. 1.2 This guide is limited to written documentation of a groundwater sampling event. Other methods of documentation (that is, electronic and audiovisual) can be used but are not addressed in this guide. The specific activities addressed in this guide include documentation of static water level measurement, monitoring well purging, monitoring well sampling, field measurements, groundwater sample preparation, and groundwater sample shipment. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 When sampling groundwater monitoring wells, it is very important to thoroughly document all field activities. Sufficient field data should be retained to allow one to reconstruct the procedures and conditions that may have affected the integrity of a sample. The field data generated are vital to the interpretation of the chemical data obtained from laboratory analyses of samples. Field data and observations may also be useful to analytical laboratory personnel. 4.2 Due to the changing nature of regulations and other information, users are advised to thoroughly research requirements related to packaging and shipping prior to initiating a sampling event. Note 1: The sampling of an individual groundwater monitoring well should be repeated as closely as possible each time the monitoring well is sampled. This reduces the variability of the chemical parameters due to sampling variability which is the desired result. The intent is to detect the change in chemistry by repeating the sampling protocol at each individual well. This does not mean that all the wells are sampled the same way, nor does it prohibit changes in the sampling protocol, provided they are planned and documented. Note 2: The quality of the results produced by this standard is dependent on the competence of personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.