This paper presents the approach Denver Water (DW) used
to design a System Specific Study (SSS) to meet the Initial Distribution System Evaluation System
Specific Study (IDSE) requirement of the proposed Stage 2 Disinfectants and Disinfection
Byproducts Rule (Stage 2 DBP Rule).
In early 2004, DW completed a three-phased project to develop an all pipes extended period
simulation (EPS) distribution system model. The project's third phase was designed to enable the
EPS model to assist DW preparations for meeting the IDSE requirement of the proposed Stage 2
DBP Rule. The model was hydraulically calibrated using traditional telemetry data and water age
computations were verified through the use of a system wide fluoride tracer test. This model
allows DW to better determine potential water quality sampling locations for Stage 2 monitoring
than the Rule's proposed Standard Monitoring Plan (SMP). Field testing in late 2004 verified the
model predicted an accurate correlation of THM formation by using distribution system residence
times relative to the water treatment plant of origin. This paper presents the results of this initial
study and some guidance to the DW operations staff for managing distribution system water
quality and energy requirements. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 530 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 15 |
| Published : | 06/17/2005 |
