1. THE SUSTAINABLE GROUNDWATER
MANAGEMENT ACT
AND WHAT IT MEANS TO THE AGGREGATE MINING
INDUSTRY
Joe Zilles, P.G., Principal Hydrogeologist

2. THE SUSTAINABLE GROUNDWATER
MANAGEMENT ACT
“Local Agencies will now have the
power to assess the conditions of
their local groundwater basins and
take the necessary steps to bring
those basin in a state of chronic
long-term overdraft into balance.”
-Governor Edmund G. Brown, Jr.
From the letter accompanying the signing
of AB 1739, SB 1168 and SB 1319

3. SGMA At A Glance
Compilation of Three Bills (2014)
AB 1739 (Dickinson)
SB 1168 (Pavely)
SB 1319 (Pavely)
Commits the State to locally controlled
sustainable groundwater management
50 Year Implementation Period
History AB3030 (1990), SB 610/221 (2004)

4. SGMA Applies to 127 High and Medium
Priority Groundwater Basins
96% of Total
Groundwater
Use in CA
40% Normal
Annual Use of
Water in CA
>60% During
Drought Periods

5. The Role of the Groundwater
Sustainability Agency and the
Groundwater Sustainability Plan
GSA
A local agency
Develop and
Implement the GSP
Considers all
beneficial uses and
users
Must be formed by
June 30, 2017
GSP
Measurable objectives
Interim milestones
Applied to all high and
medium priority basins
Low priority basins
exempt
GSPs must be completed
by Jan 31, 2020

6. Pre-SGMA Conditions and Undesirable
Results
Chronic Lowering of Water Levels
Reduction of Groundwater Storage
Seawater Intrusion
Degraded Water Quality
Land Subsidence
Depletion of Interconnected Surface Water

7. Undesirable Results
Land Subsidence
Dewatering
Process Water Supply
Depletion of
Interconnected
Surface Water
Shallow Water Table
Surface Water
Vulnerability
Groundwater
Recharge

8. Future Challenges
Stakeholder
Involvement/Groundwater
Protections
Groundwater Supply
Permitting
Supplemental Applications
CEQA Style
IS/MND/EIR
Well Construction/
Abandonment

9. Supplemental Application Example
Reference: Stanislaus County

10. Complying With Authorities
Coordination
Agreements/MOU
Groundwater
Management Fees
Allocation and
Extraction Limits
Data Management
Sds
Dss
Dsd
Sdsd
Sdsds
Sdsds
Reference: 1 Source Occupational Health Solutions

11. Data Management
Data Collection and
Reporting
Groundwater use
Aquifer Behavior and
Response

12. The Role of Stakeholders
Representation
Coordination Agreement
Data Management
Prepare for Planning Level Evaluations for
Future Water Supplies
Improve Pumping Scenarios

13. THANK YOU
Please feel Free to Contact me at
jzilles@Kleinfelder.com, 916.366.1701
Additional SGMA information can be found at:
http://www.water.ca.gov/cagroundwater/