1 cdph groundwater recharge regulations by cindy a. forbes, p.e., chief southern california field...
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CDPH Groundwater Recharge
Regulations
ByCindy A. Forbes, P.E., Chief
Southern California Field Operations BranchCalifornia Department of Public Health
December 2011 1
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Workshop Presenters
Cindy Forbes—Southern California Branch Chief
Bob Hultquist—Retired Annuitant, Recharge Specialist
Brian Bernados—Technical Programs Branch, Recycled Water Unit
Kurt Souza—Southern California Section Chief 2
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Stakeholder Meeting Overview
Historical PerspectiveExisting Groundwater Recharge Projects
2011 Draft Regulations and Time Schedule for Adoption
Implementation Protocols 3
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Historical Perspective
1978—Existing Groundwater Recharge Regs become effective (Section 60320, Title 22). Consists of 3 paragraphs, broadly regulating GW Recharge. Lacks detail.
1986—DHS Groundwater Recharge Committee Formed to Develop Reg Package
1988—First Draft Proposed (Spreading Projects Only)
1989—Draft Considered Injection
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Historical Perspective Cont.
2001, 2002—Changes involving type of organics treatment and TOC levels needed to deal with NDMA and 1,4—Dioxane
2002-2011--Additional tweaking made to the draft regulations made to deal with Chemicals of Emerging Concern (CECs)
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Historical Perspective Cont.
2010 — Statutory changes: Water Code was revised via SB 918
CDPH must adopt uniform water recycling criteria for groundwater recharge by December 31, 2013
CDPH must adopt uniform water recycling criteria for surface water augmentation by December 31, 2016
No additional resources were provided to CDPH for these activities; the ability of CDPH to meet these deadlines is dependent upon the availability of funds from other parties.
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CDPH – Division of Drinking Water and Environmental Management
Regulates public water systems Sets standards for wastewater reuse
to protect public health “Water Recycling Criteria” in Title 22 of
California Code of Regulations RWQCBs have the permitting and
ongoing oversight authority of “Groundwater Recharge Reuse Project (GRRP)”
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CDPH – SWRCB - RWQCB
Due to the potential for confusion and duplication of effort between CDPH & RWQCBs, CDPH & SWRCB signed a Memorandum of Agreement (MOA) in 1996
MOA delineates responsibilities of each agency in review and approval of RW projects
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CDPH – SWRCB – RWQCB, cont.
CDPH requirements for permit approval are to be incorporated in RWQCB permit
CDPH will meet with RWQCB staff and attend RWQCB hearings as necessary to explain any CDPH requirements or recommendations
The two agencies agree to meet and try to resolve any differences
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CDPH DDWEM Drinking Water Program
Reviews recycled water proposals for compliance with Title 22 Criteria
Provides requirements and recommendations to RWQCB for recycled water permits
Coordinates with other agencies Interfaces with recycled water industry Reviews new and emerging technologies Collects fees from project applicants for
CDPH reviews
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Draft Recharge Criteria
Recycled water from domestic sewage Aquifer designated as a drinking water
source Indirect potable reuse
Effective natural barrier Time to identify and respond to problems
Multiple barriers for each type of contaminants
Ongoing monitoring program in recycled water and groundwater
Treatment processes required Source water control
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23 MPN Pasture irrigation for milking cows and goats; restricted use golf courses; landscape impoundments
2.2 MPN Restricted recreational impoundments
Disinfection
Secondary - some uses
Primary
Groundwater Recharge
2.2 MPN Park, playgrounds; nonrestricted recreational impoundments;
Disinfection
Organics Removal
Disinfection
Filtration
Coag/Floc/settling
Source Control
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Wastewater to Drinking Waterthrough Groundwater Recharge
Soil Aquifer Treatment
Recycled Water
WastewaterTreatment
DrinkingWater
MunicipalWastewater
(source control)
Surface Spreading
Ground water
WastewaterTreatment
SubsurfaceInjection
Ground water
AdvancedTreatment
RecycledWater
DilutionWater
DilutionWater
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Groundwater Recharge Projects
Montebello Forebay – County Sanitation Districts of Los Angeles County
West Basin MWD Harbor Recycling Project Alamitos Barrier Inland Empire Utilities Agency Orange County Water District—
GWRS14
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What’s Next?
CDPH will consider comments received during the workshops and during the formal comment period. The comments will be reviewed to consider any needed changes.
To meet our statutory deadline, we’re requesting comments be submitted no later than Jan 30, 2012.
CDPH will complete the formal reg package and the formal reg process will then begin.
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What’s Next?
Formal Reg development and process Regulation Text (to enhance readability the
current version does not include some information and formatting required by the APA), Transmittal Memos, Initial Statement of Reasons, Rulemaking Notices, cost estimating documents, etc.
These documents will undergo a rigorous review process by CDPH, Agency, OOR, attorneys, Budget Office, Department of Finance, etc.
All this occurs before entering the formal 45-day public comment period and subsequently being reviewed by the Office of Adminstrative Law and being adopted.
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