1. Kevin Colvett, PE Jonathan Childs, PE CH2M HILL, Nashville CORRECTIVE ACTION PLAN AND ENGINEERING REPORT, PHASE III, FOR THE CITY OF BRENTWOOD, TN Presentation to The City of Brentwood – April 9, 2015

2. Who Are We? --- Industry Leadership ENR rankings CH2M HILL is #1 in: Source: Engineering News-Record, 2013  Program Management (since 2004)  Environmental Firms (since 2006)  Engineering/Design  Sewer/Wastewater Design  Sewerage and Solid Waste  Site Assessment and Compliance  Wastewater Treatment Plants  Water Treatment Plants

3. CH2M HILL in Tennessee Offices in Nashville and Knoxville totaling about 100 staff Tennessee clients include: –City of Brentwood –Water Authority of Dickson County –White House Utility District –City of Maryville –Knoxville Utilities Board –First Utility District of Knox County –Oak Ridge National Laboratory –Metro Water Services Nashville office engineers – Kevin Colvett is the Project Manager; and Jonathan Childs, the Geographic Manager for CH2M HILL’s Water Business in the Southeast. Both are dedicated to this project.

4. SUMMARY 1. PRIOR TO 2008 a)Brief Review of System Hydraulics b)Regulatory Order c)Process for Writing the Original CAP/ER 2. CAP/ER – 2008 3. IMPLEMENTATION YEARS – 2008-2013 4. CURRENT ANALYSIS 5. COMPLETION STRATEGY AS APPROVED BY TDEC

5. PRIOR TO 2008 13 Reported overflows at the Brentwood Pump Station in 2007 – the drought of record year. Average flow was near 6 MGD. Result was regulatory order – Case #04-0347

6. ORDER 04-0347 Required a Corrective Action Plan/Engineering Report (CAP/ER) to be jointly submitted by Metro and by Brentwood. CDM was hired to perform the work. Utilized MWS long-term flow data and GIS as well as best information available from Brentwood – some of which was temporary flow monitoring data from drought year of 2007 CAP/ER submitted and approved late 2008, but “path forward” was clear earlier than that.

7. Results of the Original CAP/ER 2014 – ON SCHEDULE NEW SCHEDULE INCLUDED IN PHASE III REPORT

8. Statistics of work performed since 2007 Rehab of close to 20% of the Little Harpeth River system (more than anticipated) Reduction of over 1,000,000 gallons per day of flow from the system Reduction of overflows in the system by 90%+/- Savings of over $1,000,000 per year in master metered flows to Metro Brentwood awarded “Rehab Program of the Year” at 2014 Water Professionals Conference in Chattanooga Moratorium relaxation Zero new regulatory actions Removal from EPA’s CMOM watch list Spent $24,000,000 on sewer rehabilitation

9. FLOWS AT THE BRENTWOOD PUMP STATION 2008-2013 NOTE VERY FEW “SPIKES” APPROACHING 9.5 mgd CAPACITY

10. Currently Proposed Path Forward - MWS and Brentwood Brentwood to continue rehabilitation in the Little Harpeth River Basin through 2019. –Propose revised master plan in 2015 –Focus more on service connections –Approximate cost $1M-$2M per year –Continue long-term flow monitoring –After 2019, commit to “annual rehabilitation” through CMOM / asset management programs MWS to continue rehabilitation in the basins contributory to the Pump Station –Propose investigative work in RI09 in 2015 –Propose rehabilitation work in 2016 –Approximate cost $1M in RI09 –Continue long-term flow monitoring –After 2019, commit to “annual rehabilitation” through CMOM / asset management programs

11. TDEC’S REACTION WAS POSITIVE

12. SO WHAT DOES THIS MEAN FOR BRENTWOOD? 1. The very-successful path you have been down for the past 8 years can be continued. 2. The cost of the rehabilitation will not exceed the cost of the other viable alternatives. 3. The monthly bills to Metro will continue to decrease.