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Agenda Item 8
Public Hearing on Proposed
Amendment to Establish a Region-wide
Process for Evaluating the Municipal
and Domestic Supply (MUN) Beneficial
Use in Agriculturally Dominated Surface
Water Bodies
True Khang
Environmental Scientist
Cindy Au Yeung
Environmental Scientist
Anne Littlejohn
Sr. Environmental Scientist
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 1
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Why Are We Here?
• Incorporation of the “Sources of Drinking
Water Policy” into Basin Plans• Overly-conservative restrictions
• Limits water reuse and conservation
Goal
Consistent - Transparent – Streamlined
Process for appropriate application and level of
protection of MUN in Ag dominated surface
water bodies
Agenda Item 8 Slide 2Central Valley Water Board Meeting, 23 February 2017
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Agenda
• Project Issue/Background
• Key Components
• Overview of Proposed Amendment
• Next Steps/Timeline
• Questions and Public Comments
• Sacramento River Source Water
Protection Program
• Central Valley Clean Water Association
Agenda Item 8 Slide 3Central Valley Water Board Meeting, 23 February 2017
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Past Board Meetings
April 2015 Board Meeting
• Adoption of Sacramento MUN BPA
• Overview of Region-wide MUN Evaluation BPA
July 2015 Board Workshop
• Limited MUN (LMUN) Beneficial Use
August 2016 Board Workshop
• Implementation and Key Issues
Today’s Board Hearing
• Discussion of Proposed Amendments
June 2017—Consideration of Adoption
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 4
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Project Issue
• Incorporation of the “Sources of Drinking
Water Policy (Resolution 88-63)” into
Basin Plans• All water bodies are designated with Municipal and
Domestic Supply (MUN) beneficial use unless they
are specifically listed in the Basin Plans as NOT
designated with the MUN beneficial use
• Primary and Secondary MCL
identified as appropriate water
quality objectives for protection
Agenda Item 8 Slide 5Central Valley Water Board Meeting, 23 February 2017
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Agenda Item 5 Central Valley Water Board Meeting, 23 February 2017 Slide 6
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Project Issue
Sources of Drinking Water Policy contains
exceptions • Exception 2b - “The water is in systems designed
or modified for the primary purpose of conveying
or holding agricultural drainage waters”
• Monitoring to assure compliance
Application
• Exceptions require a Basin Plan Amendment
• Does not address other agriculturally
dominated water bodies
Agenda Item 8 Slide 7Central Valley Water Board Meeting, 23 February 2017
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Need for
Basin Plan Amendment Application resulting in
overly conservative
restrictions
• POTW discharges
• Agricultural operations
Agenda Item 8 Slide 8Central Valley Water Board Meeting, 23 February 2017
• Triennial Review
directives
• CV-SALTS goals
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Stakeholder ParticipationProject Participants
CV Water Board
CV-SALTS
Four POTWs
California DFW
CDFA
Delta Stewardship
Council
Stakeholder Meetings Quarterly 2012 – 2013; 2015
Sept. 2014
Website/Lyris List (551 subscribers)http://www.waterboards.ca.gov/centralvalley/water_issues/salinity/mun_beneficial_use/index.shtml
US EPA
State Board Basin Planning
Division of Drinking Water
Agriculture
Water Supply
Urban Water Users
Agenda Item 8 Slide 9Central Valley Water Board Meeting, 23 February 2017
CEQA Scoping Meetings Oct. & Nov. 2012
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Building Off Historic Efforts
1992 Inland Surface Water Plan• Categorized over 6500 Ag dominated water bodies
1995 Agricultural Waters Task Force• Evaluated appropriate beneficial uses and water
quality objectives for Ag dominated water bodies
Consensus to move forward on key
recommendations: Agricultural water bodies are unique
Water body categorization
Special consideration to ancillary structures and
closed recirculating systems
Agenda Item 8 Slide 10Central Valley Water Board Meeting, 23 February 2017
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Project Alternatives
Slide 11Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017
Project Alternatives
Potential Changes to:
Beneficial Use
Designation
Water Quality
Objectives
Implementation
Program
Monitoring
& Surveillance
Program
1. No Action
2. Region-wide Water Body Categorization Framework
X X X X
3. Basin-by-Basin Water Body Categorization Framework
X X X X
4. Site Specific Objectives
X
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Is the water body described as a natural
water body (e.g. “Stream/River”) in the feature type attribute of the
National Hydrography Dataset?
Did the Applicant indicate or otherwise identify the water body as a natural
water body?
Did the Applicant indicate or otherwise
identify the water body as a constructed facility?
Are there any records available that
indicate this is not a natural water body?
Is the time period for natural flow the same
as that of the irrigation supply or drainage season?
Is the water body identified as perennial or non-perennial
on a USGS, National Hydrography Dataset or
district record?
Is there natural flow for a significant period beyond normal rainfall
events?
Have the instream aquatic life beneficial
uses developed beyond the rainfall runoff
period as a result of natural flow?
Has the water body been extensively
realigned and reconstructed or have the natural headwaters been
diverted?
Is the water body noted as dominated* by Ag supply water
or Ag drainage water?
Does the water body carry Ag Supply or
Drainage or a combination?
Does the water body carry Ag Supply or
Drainage or a combination?
Denote as an unidentified
(pending further information) water body
Yes
Denote as a C3
water body
Denote as a B1
water body
Denote as a B2
water body
Natural water body that is not Ag dominated
Denote as a C1
Constructed Ag Drain
Denote as a C2
Ag Supply Canal
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
NoNo
Ag Supply
only
Ag Supply
only
Perennial (natural
year-round flow)
Non-Perennial (ephemeral, intermittent)
Is the water body in a closed
controlled recirculating
system?
Is the water
body an on-farm/ancillary
structure?
Beneficial uses will not be designated
Closed Controlled
Recirculating System
No
Yes
Yes
No
Constructed water body that
is not Ag dominated
Non-Ag water
Denote as a M1
water body
Denote as a M2
water body
Ag Supply
only
Does the water body carry Ag Supply or
Drainage or a combination?
Modified water body that is not Ag dominated
Non-Ag water
Ag Drainage
or Combo
Ag Drainage or Combo
Ag Drainage or Combo
Modified Ag Drain/
Combo
Modified Ag Supply
Natural Ag Drain/
Combo
Natural Ag Supply
Constructed Ag Drain/
Combo
Constructed Ag Supply
Water Body Categorization Flow Chart
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 12
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Water Body Categorization Flow Chart
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 13
Water Body CategoryC1 (Constructed Ag Drain/Combo)
C2 (Constructed Ag Supply)
M1 (Modified Ag Drain/Combo)
M2 (Modified Ag Supply)
B1 (Natural Ag Drain/Combo)
B2 (Natural Ag Supply)
Closed Controlled Recirculating Systems
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Case Studies/Examples
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 14
• Can the water body categorization process
be used to determine appropriate MUN
use?
• Information needs?
• Review Steps?
• Can the process work for different basins?
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Sacramento River Basin
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 15
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Outcomes of
Sacramento Case Study• Effective Application of Water Body
Categorization Flow Chart
• Development of Water Body Categorization
Report Template
• Development of comprehensive monitoring
guide
• De-designation of MUN from twelve water
bodies with adoption by Central Valley Water
Board, State Water Board, and USEPA.
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 16
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San Joaquin River Basin Case Study
San Luis Canal Company
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 17
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Findings
• Total of 232 water bodies
230 Constructed (C1) water bodies
2 Modified (M1) water bodies
o Poso Slough
o Salt Slough (already
in Basin Plan with NO MUN)
• All constructed or modified to convey Ag drainage (no
Supply Only channels)
• Irrigated Lands Regulatory Program (ILRP) and district
water quality monitoring
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 18
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• Confirmed Suitability of Water Body
Categorization Process
• Established a Review and Verification Process
• Categories of water body
• Monitoring and surveillance
Staff proposal: Remove the MUN use from
SLCC water bodies
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 19
Outcomes of
San Joaquin Case Study
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• Reasonable accounting for “small” or newly
constructed water bodies
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 20
Outcomes of
San Joaquin Case Study
1992 ISWP
150 water bodies
2016
231 water bodies
New GIS capabilities allow
identification to 1/10 of a mile
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Distributary Rule
Any non-listed constructed water body that is less than 1
mile and/or serving less than 640 acres from a study
area that has gone through the MUN Evaluation Process
shall be regulated in the same way as the listed water
body that provides flow to or receives flow from the
unlisted water body.
Constructed Ag
Drain (C1)
Unlisted Ag
Drain (C1)
<1 mile
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 21
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Is the water body described as a natural
water body (e.g. “Stream/River”) in the feature type attribute of the
National Hydrography Dataset?
Did the Applicant indicate or otherwise identify the water body as a natural
water body?
Did the Applicant indicate or otherwise
identify the water body as a constructed facility?
Are there any records available that
indicate this is not a natural water body?
Is the time period for natural flow the same
as that of the irrigation supply or drainage season?
Is the water body identified as perennial or non-perennial
on a USGS, National Hydrography Dataset or
district record?
Is there natural flow for a significant period beyond normal rainfall
events?
Have the instream aquatic life beneficial
uses developed beyond the rainfall runoff
period as a result of natural flow?
Has the water body been extensively
realigned and reconstructed or have the natural headwaters been
diverted?
Is the water body noted as dominated* by Ag supply water
or Ag drainage water?
Does the water body carry Ag Supply or
Drainage or a combination?
Does the water body carry Ag Supply or
Drainage or a combination?
Denote as an unidentified
(pending further information) water body
Yes
Denote as a C3
water body
Denote as a B1
water body
Denote as a B2
water body
Natural water body that is not Ag dominated
Denote as a C1
Constructed Ag Drain
Denote as a C2
Ag Supply Canal
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
NoNo
Ag Supply
only
Ag Supply
only
Perennial (natural
year-round flow)
Non-Perennial (ephemeral, intermittent)
Is the water body in a closed
controlled recirculating
system?
Is the water
body an on-farm/ancillary
structure?
Beneficial uses will not be designated
Closed Controlled
Recirculating System
No
Yes
Yes
No
Constructed water body that
is not Ag dominated
Non-Ag water
Denote as a M1
water body
Denote as a M2
water body
Ag Supply
only
Does the water body carry Ag Supply or
Drainage or a combination?
Modified water body that is not Ag dominated
Non-Ag water
Ag Drainage
or Combo
Ag Drainage or Combo
Ag Drainage or Combo
Modified Ag Drain/
Combo
Modified Ag Supply
Natural Ag Drain/
Combo
Natural Ag Supply
Constructed Ag Drain/
Combo
Constructed Ag Supply
Controlled Recirculating System
• Unique characteristics
• Year-Round and
Seasonally Closed
Controlled Recirculating
Systems
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 22
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Year-Round Closed
Recirculating System
Tulare Lake
Basin Case
Example
• Surface water does
not leave the system
• Maximize water reuse,
energy savings and/or
chemical management
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 23
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Seasonally-Closed Recirculating
SystemHistoric Rice Operation
(Sacramento River Basin)
Case Example
• In the past, shift from conventional flow-through irrigation
systems to seasonally-closed recirculating system.
• Used for managing Pesticide application
• Had set notifications when discharges occurred
• Present day, few seasonally-closed controlled recirculating
systems
• Future, growing interest to use seasonally-closed systems to
maximize water reuse.
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 24
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Outcomes of Closed Controlled
Recirculating System Case Examples
• Development of closed controlled
recirculating system application
templates
• Additional information requirements due
to the unique nature of systems
• Flood control/emergency measures and
notification process
• Open/Closure Plans
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 25
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Is the water body described as a natural
water body (e.g. “Stream/River”) in the feature type attribute of the
National Hydrography Dataset?
Did the Applicant indicate or otherwise identify the water body as a natural
water body?
Did the Applicant indicate or otherwise
identify the water body as a constructed facility?
Are there any records available that
indicate this is not a natural water body?
Is the time period for natural flow the same
as that of the irrigation supply or drainage season?
Is the water body identified as perennial or non-perennial
on a USGS, National Hydrography Dataset or
district record?
Is there natural flow for a significant period beyond normal rainfall
events?
Have the instream aquatic life beneficial
uses developed beyond the rainfall runoff
period as a result of natural flow?
Has the water body been extensively
realigned and reconstructed or have the natural headwaters been
diverted?
Is the water body noted as dominated* by Ag supply water
or Ag drainage water?
Does the water body carry Ag Supply or
Drainage or a combination?
Does the water body carry Ag Supply or
Drainage or a combination?
Denote as an unidentified
(pending further information) water body
Yes
Denote as a C3
water body
Denote as a B1
water body
Denote as a B2
water body
Natural water body that is not Ag dominated
Denote as a C1
Constructed Ag Drain
Denote as a C2
Ag Supply Canal
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
NoNo
Ag Supply
only
Ag Supply
only
Perennial (natural
year-round flow)
Non-Perennial (ephemeral, intermittent)
Is the water body in a closed
controlled recirculating
system?
Is the water
body an on-farm/ancillary
structure?
Beneficial uses will not be designated
Closed Controlled
Recirculating System
No
Yes
Yes
No
Constructed water body that
is not Ag dominated
Non-Ag water
Denote as a M1
water body
Denote as a M2
water body
Ag Supply
only
Does the water body carry Ag Supply or
Drainage or a combination?
Modified water body that is not Ag dominated
Non-Ag water
Ag Drainage
or Combo
Ag Drainage or Combo
Ag Drainage or Combo
Modified Ag Drain/
Combo
Modified Ag Supply
Natural Ag Drain/
Combo
Natural Ag Supply
Constructed Ag Drain/
Combo
Constructed Ag Supply
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 26
FINDINGS
Validated
Basin-wide Process
• Categorization
• Report Template
• Verification
Next
• Beneficial Uses?
• Water Quality
Objectives?
• Implementation?
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Beneficial Use, Water
Quality Objectives and
Implementation
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 27
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MUN Beneficial Use Designation
Water Body Category Beneficial Use MUN WQOs
C1 (Constructed Ag Drain/Combo)
M1 (Modified Ag Drain/Combo)
C2 (Constructed Ag Supply)
M2 (Modified Ag Supply)
B1 (Natural Ag Drain/Combo)
B2 (Natural Ag Supply)
Closed Controlled Recirculating
Systems
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 28
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MUN Beneficial Use Designation
Water Body Category Beneficial Use MUN WQOs
C1 (Constructed Ag Drain/Combo) No MUN
M1 (Modified Ag Drain/Combo) No MUN
C2 (Constructed Ag Supply)
M2 (Modified Ag Supply)
B1 (Natural Ag Drain/Combo)
B2 (Natural Ag Supply)
Closed Controlled Recirculating
SystemsNo MUN
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 29
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Recommended Definition for
Limited MUN (LMUN)
Uses of water for municipal and domestic supply in
Ag dominated water bodies where the use is limited
by water body characteristics such as intermittent
flow, management to maintain intended Ag use
and/or constituent concentrations in the water body.
Slide 30Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017
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MUN Beneficial Use Designation
Water Body Category Beneficial Use MUN WQOs
C1 (Constructed Ag Drain/Combo) No MUN
M1 (Modified Ag Drain/Combo) No MUN
C2 (Constructed Ag Supply) LMUN
M2 (Modified Ag Supply) LMUN
B1 (Natural Ag Drain/Combo) LMUN
B2 (Natural Ag Supply) LMUN
Closed Controlled Recirculating
SystemsNo MUN
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 31
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MUN Beneficial Use Designation
Water Body Category Beneficial Use MUN WQOs
C1 (Constructed Ag Drain/Combo) No MUN N/A
M1 (Modified Ag Drain/Combo) No MUN N/A
C2 (Constructed Ag Supply) LMUN
M2 (Modified Ag Supply) LMUN
B1 (Natural Ag Drain/Combo) LMUN
B2 (Natural Ag Supply) LMUN
Closed Controlled Recirculating
SystemsNo MUN N/A
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 32
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MUN Beneficial Use Designation
Water Body Category Beneficial Use MUN WQOs
C1 (Constructed Ag Drain/Combo) No MUN N/A
M1 (Modified Ag Drain/Combo) No MUN N/A
C2 (Constructed Ag Supply) LMUNNarrative
and/or
Numeric?
M2 (Modified Ag Supply) LMUN
B1 (Natural Ag Drain/Combo) LMUN
B2 (Natural Ag Supply) LMUN
Closed Controlled Recirculating
SystemsNo MUN N/A
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 33
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Limited MUN WQO Numeric
Options1. Must meet primary MCLs, but not
secondary MCLs (Narrative for nuisance objective will still apply).
2. Must meet primary and secondary MCLs with the exception of trihalomethanes(short half-life).
3. Must meet primary and secondary MCLs, but dissolved fractions can be used in place of total fractions.
Agenda Item 5 Central Valley Water Board Meeting, 23 February 2017 Slide 34
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Limited MUN WQO Narrative
Options
• Ten options considered
• Complex terms/ definitions
• non-potable, natural background concentrations, accumulation
• Antidegradation policies
Agenda Item 5 Central Valley Water Board Meeting, 23 February 2017 Slide 35
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Recommended Water Quality
Objective for Limited MUN
Water quality and downstream beneficial uses
will be protected consistent with the state
antidegradation policy.
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 36
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Limited MUN Example
Agenda Item 5 Central Valley Water Board Meeting, 23 February 2017 Slide 37
Discharge 5 ug/L
1.0 ug/L
2.1 ug/L
2.0 ug/L
0.5 ug/L
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MUN Beneficial Use Designation
Water Body Category Beneficial Use MUN WQOs
C1 (Constructed Ag Drain/Combo) No MUN N/A
M1 (Modified Ag Drain/Combo) No MUN N/A
C2 (Constructed Ag Supply) LMUN
NarrativeM2 (Modified Ag Supply) LMUN
B1 (Natural Ag Drain/Combo) LMUN
B2 (Natural Ag Supply) LMUN
Closed Controlled Recirculating
SystemNo MUN N/A
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 38
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Project Alternatives
Slide 39Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017
Project Alternatives
Potential Changes to:
Beneficial Use
Designation
Water Quality
Objectives
Implementation
Program
Monitoring
& Surveillance
Program
1. No Action
2. Region-wide Water Body Categorization Framework
X X X X
3. Basin-by-Basin Water Body Categorization Framework
X X X X
4. Site Specific Objectives
X
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Implementation Program
• Development of a streamlined implementation:
1. Reporting information to Water Board
2. Assigning appropriate beneficial use and water quality
objectives
3. Ensuring protection of downstream beneficial uses
• Options
• “As Needed Basis”
• Time Schedule
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 40
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Implementation Program
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 41
1. Process Initiation and Review
2. Establishment of Interim Designations
3. Adoption into the Basin Plan
Document Submittals
Review and Verification· WB Category
· Monitoring and Surveillance
Public Review and EO Approval
Reference Document
Interim Permit Limits
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Step 1 - Process Initiation
Submittal of:
• Notice of Intent (NOI)
• Water Body
Categorization Report
and/or
Closed Recirculating
System Applications
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 42
1. Process Initiation and Review
Document Submittals
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Step 1 - Staff Review
1. Water Body
Categories
2. MUN use
3. Constituents of
Concern
4. Monitoring
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 43
1. Process Initiation and Review
Document Submittals
Review and Verification· WB Category
· Monitoring and Surveillance
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Implementation Program
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 44
1. Process Initiation and Review
2. Establishment of Interim Designations
3. Adoption into the Basin Plan
Document Submittals
Review and Verification· WB Category
· Monitoring and Surveillance
Public Review and EO Approval
Reference Document
Interim Permit Limits
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Step 2: Staff Recommendations
for Interim Designations
• Water body/system category
designations
• MUN beneficial use designations
• Monitoring requirements to
protect downstream beneficial
uses
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 45
2. Establishment of Interim Designations
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Step 2 – Recommendation
Approval Process
• Executive Officer
approval
• Notice of Tentative
Approval (NOTA)
• Public Comments
• Notice of Approval
(NOA)
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 46
2. Establishment of Interim Designations
Public Review and EO Approval
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Step 2: Reference Document
• Document outside
the Basin Plan
• Stores interim
designations
• Finite timeframe • 5 years, 3 years extension
• Allows interim
permit limits
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 47
2. Establishment of Interim Designations
Public Review and EO Approval
Reference Document
Interim Permit Limits
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Implementation Program
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 48
1. Process Initiation and Review
2. Establishment of Interim Designations
3. Adoption into the Basin Plan
Document Submittals
Review and Verification· WB Category
· Monitoring and Surveillance
Public Review and EO Approval
Reference Document
Interim Permit Limits
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Step 3: Adoption into the Basin
Plan
Bundle updates to Reference
Document ~3 years
• Board Consideration
during Triennial Review or
other Public Hearing
process
• State Board and OAL
Approval
• US EPA as appropriate
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 49
3. Adoption into the Basin Plan
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Estimated Implementation Timeline
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 50
Region-wide Process Basin Plan Amendment
Submittal of Documents 3 months—1 year
Staff Review/Recommendations 2 months
NOTA for Public Comments 45 days
Staff Review Comments and Revise 45 days
NOA/Reference Document 8 months—1 ½ years
Regional Board Adoption 3 years
State Board/OAL/USEPA Approval 1 year
Individual Basin Plan Amendment
Regional Board/State Board/OAL/USEPA
Approval3 years—5 years
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Monitoring and
Surveillance
Central Valley Water Board Meeting, 23 February 2017Agenda Item 8 Slide 51
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Monitoring and Surveillance
Central Valley Water Board Meeting, 23 February 2017Agenda Item 8 Slide 52
Assessments must:
• Meet Monitoring Requirements of Exception
2b
• Ensure No Unreasonable Impacts to
Downstream Water Bodies
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Comprehensive Monitoring Guides
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 53
Updated every 3 to 5
years
Data sources:
Applicant, NPDES,
ILRP, SWAMP, DDW
and outside entities.
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Comprehensive Monitoring Guides
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 54
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Proposed Case-by-Case
Monitoring Program Options
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 55
1. No additional monitoring required
• Existing data show no impacts to water quality
downstream
• Existing regulatory monitoring needs to be continued
2. Additional monitoring required
• Fill in data gaps
Results evaluated as part of Basin Plan
Amendment Process
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Evaluation of Downstream Impacts
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 56
• Monitoring Duration
• Data must demonstrate no unreasonable impacts
downstream
• May be changed or reduced
• Discharger responsible for:
• New discharges
• Changes to discharges – character, location or
volume
• Water Board will:• Coordinate regular Title 22 constituent evaluations
in MUN watersheds as resources permit
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SLCC Example
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 57
• SLCC Water Body Categorization Report
• Staff Review and Verification
• Designations:• Water Body Categories:
231 constructed/modified drains
• Beneficial Use:
NO MUN
Monitoring? W. San Juan Drain
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SLCC Example
Central Valley Water Board Meeting, 23February 2017Agenda Item 8 Slide 58
Developed
Comprehensive
Monitoring Guide for
the Lower San Joaquin
River
• Identified
Constituents of
Concern
• 15 Monitoring
Programs
• ~ 65 Different
Monitoring Sites
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SLCC Example
• Extensive monitoring by many agencies downstream
to the Delta ILRP
NPDES
SWAMP
Municipal Water Quality Investigations (MWQI)
USGS
State Water Board Division of Drinking Water Source Water Monitoring
• Regular monitoring of a wide variety of constituents
Recommended Monitoring Option:
Existing Regulatory Programs are Sufficient
Central Valley Water Board Meeting, 23 February 2017Agenda Item 8 Slide 59
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Irrigated Lands Regulatory
Program• Regulates agriculture coalitions and individuals through WDRs
• Representative monitoring locations for watersheds with
agricultural operations
• Triggers are incorporated to protect beneficial uses of water
bodies
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 60
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Point-Source and
Municipal Storm Discharges
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 61
NPDES dischargers will:
• Conduct Reasonable
Potential Analysis (RPA)
• Still have to ensure
antidegradation
requirements are met
• Municipal Storm Water
dischargers will:
• Use BMPs
• Monitor to address 303(d) listed
constituents and other
constituents of concerns
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Limited-MUN Water Bodies
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 62
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Permitting a Discharge
to a LMUN Water Body
When permitting a discharge to a LMUN-
designated water body, the Board must
ensure that “water quality and
downstream beneficial uses will be
protected consistent with the state
antidegradation policy.”
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 63
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Permitting a Discharge
to a LMUN Water Body
The Antidegradation Policy prohibits degradation
of high-quality waters unless:
• The degradation will not result in violations of
applicable quality objectives;
• The degradation will not unreasonably affect
beneficial uses;
• BPTC to minimize degradation; and
• Degradation is consistent with the maximum
benefit to the people of the state.
Agenda Item 8 Central Valley Water Board Meeting, 23 February
2017
Slide 64
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Permitting a Discharge
to a LMUN Water Body
The Antidegradation Policy prohibits degradation
of high-quality waters unless:
• The degradation will not result in violations of
applicable quality objectives;
• The degradation will not unreasonably affect
beneficial uses;
• BPTC to minimize degradation; and
• Degradation is consistent with the maximum
benefit to the people of the state.
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 65
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Permitting a Discharge
to a LMUN Water Body
The Antidegradation Policy prohibits degradation
of high-quality waters unless:
• The degradation will not result in violations of
applicable quality objectives;
• The degradation will not unreasonably affect
beneficial uses;
• BPTC to minimize degradation; and
• Degradation is consistent with the maximum
benefit to the people of the state.
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 66
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Agenda Item 5 Central Valley Water Board Meeting, 23 February 2017 Slide 67
Discharge 5 ug/L
1.0 ug/L
2.1 ug/L
2.0 ug/L
0.5 ug/L
Permitting a Discharge
to a LMUN Water Body
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Overview of
Proposed Amendments
Agenda Item 8 Slide 68Central Valley Water Board Meeting, 23 February 2017
• Establish a Standardized Region-wide
Evaluation Process
• Appropriate MUN and associated WQOs
• Implementation
• Monitoring/Surveillance
• Establish a LIMITED-MUN Beneficial Use
• Utilize a Reference Document for interim
designations
• Establishes Appendices for Limited-MUN and
MUN de-designated water bodies
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Overview of
Proposed Amendments
Agenda Item 8 Slide 69Central Valley Water Board Meeting, 23 February 2017
• Apply Evaluation
Process to 231
constructed/
modified Ag
water bodies
• Remove MUNSan Luis Canal Company
(San Joaquin River Basin)
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Next Steps and Timeline
Public ReviewJanuary 23 –
March 17 2017
Response to Public Comments May 2017
Regional Board Hearing to consider
AdoptionJune 2017
State Board Hearing to consider
Adoption
TBD
(December 2017)
OAL & US EPA ApprovalTBD
(June 2018)
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 70
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Discussion
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 71
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Questions/Comments?
Agenda Item 8 Central Valley Water Board Meeting, 23 February 2017 Slide 72