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 SummaryBajamont GET “L-B” Ancil Hoffman GET “L-A”

Initial Extraction Rate 325 gpm 600 gpm

Revised Extraction

Rate

600 gpm 800 gpm

Plant Design Capacity 1,000 gpm 2,000 gpm

Contaminants Present

Now

NDMA NDMA, Perchlorate, TCE

Contaminants

Expected

NDMA, Perchlorate,

TCE

NDMA, Perchlorate, TCE

Treatment Processes UV, 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

Bajamont GET “L-B” Facility

Bajamont GET “L-B” Facility

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