Town Hall Meeting 12 March 2008 Carmichael Area Aerojet Groundwater Remediation Progress Update 12 March 2008

Presentation Program  Carmichael Water District – Steve Nugent General Manager  Regional Water Quality Control Board – Alex MacDonald  GenCorp/Aerojet – Mike Girard

Acknowledgements  Congressman Dan Lungren  County Supervisor Susan Peters  Carmichael Water District Board Members

March 2008 Update  Background on Carmichael Water District Involvement  Water Supply Reliability Improvements  Status of Bajamont Groundwater Extraction and Treatment Plant Construction (GET L-B)  Status of Ancil Hoffman GET L-A Irrigation Reuse  Regional Objectives Going Forward  Questions and Answers

Regional Geology

CWD Service Area Wells and NDMA Plume

Water Supply Reliability Expanding Surface Water Treatment Plant from 16 MGD to 21 MGD  New Membrane Treatment Modules  Additional Treated Water Pumping Capacity  Additional Chemical Treatment and Air Handling Expected Completion Plant Expansion May 2008

Water Supply Reliability  Water Rights Permit Extension Filed with Department of Water Resources  CEQA Process Underway to Support Permit Extension Request  Expected Completion Late 2008

Water Supply Reliability Participating in Regional Activities  Briefings with Congressional Representative  Briefings with State Government Representatives  Briefings with County and Local Representatives  Sacramento Groundwater Authority Contamination Task Force  ACWA Cap to Cap Outreach

GET “L-A” and “L-B” Remediation  GET “L-B” – Bajamont Site Operational at 600 gpm and Discharging to the American River  GET “L-A” – Design Underway with Irrigation Reuse (1MGD) and Wet Weather Discharge to American River

GET Treatment Process Summary Bajamont GET “L-B”Ancil Hoffman GET “L-A” Initial Extraction Rate325 gpm600 gpm Revised Extraction Rate 600 gpm800 gpm Plant Design Capacity1,000 gpm2,000 gpm Contaminants Present Now NDMANDMA, Perchlorate, TCE Contaminants Expected NDMA, Perchlorate, TCE Treatment ProcessesUV, GAC, (F) Ion Exchange, (F) Peroxide UV, Peroxide, (F) Ion Exchange, (F) GAC

Bajamont GET “L-B” Update  Bajamont GET “L-B” Facility Construction complete – Startup Extraction Well September 7, 2007  Construction met date set by EPA  “Operational and Functional” Certification by EPA Pending Completion GET “L-A”

Bajamont GET “L-B” Facility Sample Heading  First level bullet Second level bullet –Third level bullet

Bajamont GET “L-B” Facility Sample Heading  First level bullet Second level bullet –Third level bullet

Bajamont GET “L-B” Facility Sample Heading  First level bullet Second level bullet –Third level bullet

GET “L-B” Completed

Ancil Hoffman GET “L-A” Update  Design started at same time as GET L-B but separated to allow public outreach and siting process in Ancil Hoffman Park to proceed at a slower pace  Milestone Achieved August 8, 2007: Ancil Hoffman GET “L-A” Facility location approved by County Board of Supervisors

Ancil Hoffman GET “L-A” Update  CWD Participation includes Buried Reservoir and new Irrigation Pump Station for Golf Course  Reuse of Remediated Groundwater offsets surface water and maintains beneficial use of groundwater  Construction Buried Reservoir estimated to start Summer 2008

Strategic Goals 1. Early Detection & Identification of Contaminants Near Our Water Supply Wells. 2. Expansion of the Bajamont Water Treatment Plant. 3. Assist Aerojet in Locating, Permitting Remediation Facilities. 4. Using Treated, Extracted Groundwater at Ancil Hoffman Park.

Strategic Goals 5. Increased Conservation Efforts to Reduce Overall Demand. 6. Identify Potential Funding Sources for Projects. 7. Work Regionally to Enact Legislation to Increase Funding to Expedite Remediation Efforts. 8. Legal Representation.

March 2008 Town Hall Meeting Questions