AWWA ACE65292

This powerpoint presentation outlines topics that include: summarize the proposed changes to theLead and Copper Rule;Simultaneous Compliance Considerations; Simultaneous Compliance Examples;Trends Related to Lead Corrosion Controland Simultaneous Compliance; and, Recent Examples Related to Lead CorrosionControl and Simultaneous Compliance. Conclusions were that:Recent Lead Detections and Investigations inWashington DC, Durham NC and other LocationsReveal Simultaneous Compliance Issues with theDBPR and Lead and Copper Rule;Recently Developed Materials such as the MDBPSimultaneous Compliance Guidance ManualShould be Consulted before Making anySignificant Process Changes;Changes in oxidant/disinfectant and coagulantCl:SO4 ratio have been found to impact leadcorrosion significantly, past guidance on leadcorrosion showed impacts of pH, inhibitors suchas phosphates and silicates, hardness, alkalinity,total dissolved solids, bio-corrosion, etc.;Proposed Changes to the Lead and Copper RuleSeek to Help Address Recent Trends by measuressuch aspreventing water systems above the lead actionlevel from remaining on a reduced schedule basedon maintaining Water Quality parameters, andrequiring water systems to provide advancednotice to the primacy agency of intended changesin treatment or source water that could increasecorrosion of lead; and,make only one major process change at a time andevaluate corrosion control before and after eachchange.

Product Details

Edition:

Vol. - No.

Published:

06/01/2007

Number of Pages:

14

File Size:

1 file , 1.2 MB