1. Update on Water Quality
April 11, 2018 Board Meeting
Jim Flechtner, Executive Director

2. Summary
Levels of GenX remain below the NCDHHS health goal of 140 parts per trillion
Water stations are now open at Ogden Park and Veterans Park
Continued monitoring of groundwater in the vicinity of ASR
Pilot study at Sweeney has entered final stage
Controlling contaminants at the source remains the best option for maintaining water quality, protecting the environment and ensuring associated costs are paid by discharger, not downstream communities.

3. Weekly Sampling of the Finished Water

4. CFPUA Water Stations Ogden Park and Veterans Park locations
Open every day from 8am to 8pm
No cost option for concerned customers

5. CFPUA Aquifer Storage and Recovery Well Status
Approximately 50 million gallons of groundwater was removed from ASR Well
Pumped from aquifer to sanitary sewer from September 2017 to December 2017
ASR site tested 28 ppt GenX in March 2018
WB#11 tested 34 ppt GenX in March 2018
Monitoring of groundwater in the vicinity of ASR and WB#11 continues per NCDEQ Notice
All wells below 140 ppt health advisory level
Work plan for continued sampling submitted to NCDEQ for comments
NCDEQ requested to establish groundwater interim maximum allowable concentration

6. Sampling Results of Water at Sweeney Water Treatment Plant Pre-Pilot Study
We are currently testing for 20 per-fluorinated compounds that have standards.
Levels of an additional 10 per-fluorinated compounds must be estimated due to the lack of testing methods.
GenX consistently accounts for a small percentage of the per-fluorinated compounds that can be detected.

7. Findings from UNCW Work
Scientists at UNCW sample the raw and finished water at Sweeney weekly.
To date, they have detected five new PFAS compounds not previously reported in the literature.
Final report to CFPUA expected summer 2018

8. What We Still Do Not Know:
Effects of non-point sources on contaminant levels in the River
Potential for accumulation in CFPUA treatment, storage and distribution systems
Health effects of combined levels of all PFAS
Effects of environmental accumulation

9. Water Quality Response Update
Pilot study is in final phase of testing
GAC and Ion Exchange show effectiveness in removing per- fluorinated compounds from the drinking water
CFPUA staff working with Black & Veatch to understand results and develop conclusions
Release once a week updates to customers and the media
Continue to follow UNCW progress in identifying new compounds
Recommendation to Board: Expected May 9