未来第2阶段消毒剂/消毒副产品（D/DBP）规则将具有重大意义 对亚利桑那州饮用水系统的影响，尤其是地表水系统。这个未来的规则， 它专注于控制系统中的最高DBP水平，将需要很多时间 公用事业公司应仔细评估其供水基础设施和运营策略。A. 该规则的可能要求是实施初始分配系统评估 （IDSE）以确定DBP热点。凤凰城（City）已经开始计划 未来阶段2 D/DBP规则及其IDSE要求。Carollo工程师，马尔科姆·皮尔尼公司。， 其他人正在努力更新该市的水质总体规划，以帮助该市遵守相关规定 根据这一未来规则，并满足其他水质目标。作为计划的一部分，项目团队 正在使该市现有的- 将水力模型状态提升到下一个级别，包括更新 基础设施数据，开发延长期模拟（EPS）能力，以及校准 预测水龄和水源水贡献。水龄和水源的产出 然后将贡献作为水质模型的输入，以预测环境中消毒副产物（DBP）的形成 分配系统。结果工具将用于评估规划方案， 确定IDSE的DBP热点并改进系统操作。 项目团队在2002年1月进行了配电系统示踪测试，以产生 进一步校准城市水力模型的数据。本文总结了该项目的执行和实施情况 氟化物示踪剂测试程序的结果以及结果在模型校准中的应用。 确定了目标采样区域，测量了系统流量路径和历史水质 考虑数据。测试计划要求不同部门之间进行重大协调 该市水服务部门内的部门以及菲尼克斯消防局 确定可以安装自动取样器的安全取样位置。凤凰城之火 选择部门设施是因为其安全性和在全市的位置。在里面 除了自动取样装置收集的用于氟化物示踪分析的样品外，还有水 在研究过程中收集并分析了质量样品的游离氯残留、pH值、， 温度、总三卤甲烷（TTHMs）和卤乙酸（HAA5）。这些数据是 与氟化物测试的水龄和水源贡献数据结合使用 校准氯衰变和DBP形成的水质模型。包括表格、数字。

The future Stage 2 Disinfectants/Disinfection Byproducts (D/DBP) Rule will have a significant impact on potable water systems in Arizona, especially surface water systems. This future rule, which focuses on controlling the highest DBP levels in a system, will require many Phoenix-area utilities to carefully evaluate their water distribution infrastructure and operational strategies. A likely requirement of this rule is the implementation of an initial distribution system evaluation (IDSE) to identify DBP hot spots. The City of Phoenix (City) has already started to plan for the future Stage 2 D/DBP Rule and its IDSE requirements. Carollo Engineers, Malcolm Pirnie, Inc., and others are working to update the City's Water Quality Master Plan to help the City comply with this future rule and meet other water quality goals. As part of the planning, the project team is taking the City's existing steady-state hydraulic model to the next level which involves updating infrastructure data, developing extended period simulation (EPS) capabilities, and calibrating predictions of water age and source water contribution. Outputs of water age and source contribution were then used as inputs to water quality models to predict disinfection byproduct (DBP) formation in the distribution system. The resultant tool will be used for evaluating planning alternatives, identifying DBP hot spots for the IDSE and improving system operations. The project team performed a distribution system tracer test during January 2002 to generate data to further calibrate the City's hydraulic model. This paper summarizes the execution and results of the fluoride tracer testing program and the application of results to model calibration. Targeted sampling areas were identified, taking system flow paths and historical water quality data into consideration. The testing program required significant coordination between different divisions within the City's Water Services Department and with the Phoenix Fire Department to identify secure sampling locations where auto-samplers could be installed. City of Phoenix Fire Department facilities were chosen due to their security and locations throughout the City. In addition to samples collected by the auto-sampling units for fluoride tracer analysis, water quality samples were collected and analyzed during the study for free chlorine residual, pH, temperature, total trihalomethanes (TTHMs), and haloacetic acids (HAA5). These data were used in combination with water age and source contribution data from the fluoride testing to calibrate water quality models for chlorine decay and DBP formation. Includes tables, figures.