1. Collection system Monitoring (CMOM, I/I, and CSO) Bob Glenn Western U.S. Sales Manager Teledyne Isco Inc.

2. Municipalities striving to… –Deliver a high level of service to their customers –Maintain regulatory compliance at all times –**Improve asset management –**Develop more efficient & productive work management plans **Especially critical in current municipal environment

3. The Current Economic Dilemma Estimated 84% of all communities will be impacted significantly in 2009—US Weekly

4. What does this mean? Reduced staffing (RIF) Reduced staffing (RIF) Hiring & wage freezes Hiring & wage freezes Fewer new projects being funded Fewer new projects being funded Budget dollars spread thinner across the board Budget dollars spread thinner across the board –Replacement equipment reduced or cancelled –Training & professional development opportunities limited

5. The Challenge Current economy does not grant Municipal entities a “mulligan” against their permit requirements Current economy does not grant Municipal entities a “mulligan” against their permit requirements Like everyone else…Do more with less. Like everyone else…Do more with less. Problems can increase in intensity and frequency with fewer resources to engage in preventative maintenance. Problems can increase in intensity and frequency with fewer resources to engage in preventative maintenance.

6. Complicating the Challenge Limited resources available to rectify often numerous problems Limited resources available to rectify often numerous problems Aging assets & infrastructure Aging assets & infrastructure Elevated regulatory requirements Elevated regulatory requirements Rapid rise in citizen awareness elevates expectations Rapid rise in citizen awareness elevates expectations Potential for I/I events to have “magnified” consequences Potential for I/I events to have “magnified” consequences

7. Infiltration/Inflow -Health risk and property damage -Renders WWTP processes less efficient -Uses up sewer capacity limiting expansion capability

8. Typical I/I Sources Cracked & broken pipes Cracked & broken pipes Root intrusion Root intrusion Roof vents & drains in older structures Roof vents & drains in older structures Older or improperly fitted manhole covers Older or improperly fitted manhole covers CSO tie-ins CSO tie-ins Illegal sewer service taps (sump pumps etc…) Illegal sewer service taps (sump pumps etc…)

9. Methods of Identifying I & I Sources Cameras Cameras Smoke Testing Smoke Testing Flow Measurement Flow Measurement Smoke Testing and Cameras are fine secondary investigative tools, but are not practical for day to day monitoring

10. Surcharge events & blockages not only get you in trouble with regulators, but also invite the ire of the local public due to potential adverse affects to public health and the environment. SSO (Sanitary Sewer Overflow)

11. 80% of U.S. population provided with drinking water from surface sources 80% of U.S. population provided with drinking water from surface sources Deadly bacteria deposited into these surface waters (human illness due to direct exposure + food chain contamination) Deadly bacteria deposited into these surface waters (human illness due to direct exposure + food chain contamination) Property depreciation, extensive cleanup costs, long term health issues Property depreciation, extensive cleanup costs, long term health issues 65% of polled municipalities in lower 48 reported AT LEAST one major SSO event 65% of polled municipalities in lower 48 reported AT LEAST one major SSO event SSO (Sanitary Sewer Overflow)

12. Where do we start ? Develop an overall strategy Develop an overall strategy Conduct internal audit to assess core competency & capabilities Conduct internal audit to assess core competency & capabilities Identify resources available to assist in addressing problems Identify resources available to assist in addressing problems Collect professional input when needed Collect professional input when needed Begin to “know your system” Begin to “know your system”

13. Indicators of System performance Peaking responses during storm events Peaking responses during storm events System (basin) response time System (basin) response time # of customer complaints # of customer complaints # of blockages # of blockages # and volume of un-permitted discharges # and volume of un-permitted discharges Effect on operation of treatment facilities Effect on operation of treatment facilities

14. Flow Monitoring? Why? NPDES – Permit Compliance NPDES – Permit Compliance Billing applications Billing applications –Flumes/Weirs I & I studies I & I studies –Promote efficient treatment –CSO and SSO reduction cMOM cMOM –Capacity Management Operations and Maintenance (System Optimization) Storm water monitoring Storm water monitoring

15. Flow Measurement The absolute KEY to understanding & optimizing the performance of your collection system! The absolute KEY to understanding & optimizing the performance of your collection system! Various technologies to choose from Various technologies to choose from Examine system needs and potential monitoring locations BEFORE committing to any single technology Examine system needs and potential monitoring locations BEFORE committing to any single technology Multiple technologies often needed due to myriad of site-specific variables Multiple technologies often needed due to myriad of site-specific variables

16. Basin Wide Analysis Careful identification of drainage basins throughout the system Careful identification of drainage basins throughout the system Systematic approach to prioritize Systematic approach to prioritize

17. The Systematic approach -Volume/effect of inflow on WWTP process & system welfare must be weighed -”Pain Index” must be considered -Limited resources to resolve issues also must be considered

18. Step #1: Temporary Monitoring

19. Temporary Monitoring Use lightweight, battery powered flow meters to collect baseline data Use lightweight, battery powered flow meters to collect baseline data Identify & Prioritize problems basins Identify & Prioritize problems basins Investigate & Eliminate major I/I contributors Investigate & Eliminate major I/I contributors Structure finite maintenance resources to address biggest threats Structure finite maintenance resources to address biggest threats

20. Targets for Maintenance Programs based on flow data Analysis Excessive siltation reducing capacity Excessive siltation reducing capacity Hydraulic issues causing backups & surcharges Hydraulic issues causing backups & surcharges Identify excessive or illegal flow contributors Identify excessive or illegal flow contributors Address H2S generation issues Address H2S generation issues Gain insight into pump station performance Gain insight into pump station performance

21. Data Indicating excessive siltation

22. Surcharge/Reverse flow

23. Pump Station performance

24. Variable Rate Data Storage

25. Variable Rate Data example for I/I analysis

26. Modeling Helps “predict” flow patterns and system wide capacity. Helps “predict” flow patterns and system wide capacity. Assess seasonable cycles & variables Assess seasonable cycles & variables Used to approve municipal expansion projects Used to approve municipal expansion projects –New residential housing area –New industrial plant expansion Can help with prioritization by considering future I/I’s effect on future expansion Can help with prioritization by considering future I/I’s effect on future expansion

27. Permanent “Fixed-site” Monitoring Placed at key points in the system Placed at key points in the system Often AC power w/ battery backup Often AC power w/ battery backup Tied to plant w/ SCADA or other telemetry Tied to plant w/ SCADA or other telemetry

28. Allows reaction time @ plant during extreme events via alarms Allows reaction time @ plant during extreme events via alarms Opportunity to divert flows to maintain plant integrity Opportunity to divert flows to maintain plant integrity Insight into effectiveness of maintenance programs with elimination of problem flows, backups, and siltation issues Insight into effectiveness of maintenance programs with elimination of problem flows, backups, and siltation issues Permanent “Fixed-site” Monitoring

29. The St. Louis project 430 permanent meters 430 permanent meters Tied to server & Web U/I server Tied to server & Web U/I server Remote alarms & event notification Remote alarms & event notification CSO event duration & overflow volume CSO event duration & overflow volume

30. The Future holds??? This is too big an issue to ignore… This is too big an issue to ignore… Expertise in this area can benefit both government & private sector employees Expertise in this area can benefit both government & private sector employees

31. CONCLUSION Regardless of Consultant or Municipality conducting the study… CAREFUL PREPARATION AND ANALYSIS is the key! ALWAYS have a plan. Be systematic & thorough, using the best information & technologies.

32. Questions?