1999年，代托纳海滩市向环境保护局提交了一份风险管理计划（RMP），以满足《风险管理规划意外释放预防条例》的要求。当时，该市有三个设施超过了RMP 2500磅的阈值限制。其中包括位于同一地点的15米高西区污水处理厂和20米高布伦南污水处理厂，以及13米高白求恩角污水处理厂。巧合的是，在考虑满足RMP要求的替代方案时，市政府工作人员正在评估其Brennan水处理计划的氯化设施，并确定25年的系统即将达到其使用寿命。因此，该市启动了一项计划，用符合RPM要求的新设备取代气态氯供给系统。 本文讨论了该市布伦南水处理厂次氯酸钠的选择。

In 1999, The City of Daytona Beach submitted a Risk Management Plan (RMP) to the Environmental Protection Agency in fulfillment of the requirements of the Risk Management Planning-Accidental Release Prevention Regulations. At the time the City had three installations at which the RMP 2500-pound threshold limit was exceeded. These included the co-located 15 MGD Westside Regional Wastewater Treatment Plant and the 20 MGD Brennan Water Treatment Plant, and the 13 MGD Bethune Point Wastewater Treatment Plant. Coincidentally, while considering alternatives to meet the RMP requirements, the City staff was evaluating its Brennan Water Treatment Plan chlorination facilities, and had determined that the 25-year old system was reaching the end of its useful life. The City thus embarked on a program to replace the gaseous chlorine feed system with new equipment designed to comply with the RPM. This paper discusses the City's selection of sodium hypochlorite for its Brennan Water Treatment Plant.