2014 Integrated Report...Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016...

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Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016 Slide 1 2014 Integrated Report Jay Simi Water Resource Control Engineer Michelle Wood Senior Environmental Scientist

Transcript of 2014 Integrated Report...Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016...

Page 1: 2014 Integrated Report...Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016 Slide 6 Scope of Assessments Agenda Item #16 Slide 7 2012 (total) 2014 (total) Data

Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016 Slide 1

2014 Integrated Report

Jay Simi Water Resource Control Engineer

Michelle WoodSenior Environmental Scientist

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Presentation Outline

Background and ImportanceResults for 305(b) ReportMethodology Region-Specific AssessmentsResults for 303(d) ListNext Steps

Agenda Item #16 Slide 2Central Valley Water Board Meeting of 13-14 October 2016

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What is the Integrated Report? Required every two years CWA Section 305(b) Assessment

– Overall quality of the water

CWA Section 303(d) List– Water bodies not meeting Water Quality Standards

Developed by each Region and compiled by State Water Board

Submitted together as the ‘Integrated Report’Agenda Item #16 Slide 3Central Valley Water Board Meeting of 13-14 October 2016

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Importance of Integrated Report

Status of water quality and pollutant trends

Feedback on effectiveness of control programs

Additional regulatory program requirements: Irrigated Lands Regulatory Program, NPDES permits, etc.

Prioritization of future effortsAgenda Item #16 Slide 4Central Valley Water Board Meeting of 13-14 October 2016

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Developing the Integrated Report

Required every two years

Recent updates in 2002, 2006, 2010, 2012*

Process change

Year Regional Boards

2012North Coast (Region 1)Lahontan (Region 6)Colorado Basin (Region 7)

2014Central Coast (Region 3)Central Valley (Region 5)San Diego (Region 9)

2016San Francisco Bay (Region 2)Los Angeles (Region 4)Santa Ana (Region 8)

Agenda Item #16 Slide 5Central Valley Water Board Meeting of 13-14 October 2016

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2014 Integrated Report

Last Region 5 Update: 2010 Integrated Report– Includes data submitted through February 28, 2007– 2010 Integrated Report (IR) assessments “carried over”

to the 2012 Integrated Report

2014 IR updates 2012 IR– Includes data submitted through August 30, 2010– 2012, 2014, and 2016 IRs based only on data

submitted through August 2010, per State Water Board

Agenda Item #16 Slide 6Central Valley Water Board Meeting of 13-14 October 2016

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Scope of Assessments

Agenda Item #16 Slide 7

2012 (total) 2014 (total)Data period Jan. 2007 Aug. 2010

Water body segments 378 648

Pollutants >70 >200

Deliberate and careful assessment process Critical regulatory implications of impairment findings Database access delays

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Water Body SegmentsAssessed

Agenda Item #16 Slide 8Central Valley Water Board Meeting of 13-14 October 2016

Sacramento-San Joaquin Basin:• 7,100 of >20,000 miles of rivers

and streams (~35% of total)• 143 of >1,000 lakes and

reservoirs (~14% of total)

Tulare Lake Basin:• 1,100 of >4,100 miles of rivers

and streams (~30% of total)• 11 of 200 lakes and reservoirs

(~5% of total) Assessed waters

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New Water Body Segments

Assessed for 2014 Integrated

Report

Agenda Item #16 Slide 9

Assessed waters

Central Valley Water Board Meeting of 13-14 October 2016

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2014 305(b) Report

Based on water body-pollutant assessments conducted to develop the 303(d) List

Provides holistic assessment of a given water body segment

Agenda Item #16 Slide 10Central Valley Water Board Meeting of 13-14 October 2016

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CWA Section 305(b) Report

Agenda Item #16 Slide 11

Determination of Beneficial Use support with focus on “Core” Beneficial Uses: Municipal and domestic supply (MUN) Aquatic life support (WARM/COLD) Commercial and sport fishing (COMM) Shellfish harvesting (SHELL) Contact recreation (REC-1) Non-contact recreation (REC-2)

Central Valley Water Board Meeting of 13-14 October 2016

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CWA Section 305(b) Report Category 1: At least one Beneficial Use (BU)

supported, no impairments indicated. Category 2: Insufficient information. Category 3: Data indicated uses may be threatened. Category 4: At least one BU not supported.

Impairment being addressed, no new TMDL needed.

Category 5: At least one BU not supported. Impairment not yet being addressed, new TMDL required.

Agenda Item #16 Slide 12Central Valley Water Board Meeting of 13-14 October 2016

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Water Body 305(b) Categories

Agenda Item #16 Slide 13

Category / # of WBs 2012(total)

Added Removed 2014(total)

1. At least one beneficial use fully supported, no known impairments 24 (6%) 28 9 43 (7%)

2. Insufficient information to determine beneficial use support. 88 (23%) 177 18 247 (38%)

At least one beneficial use is not supported and:4a. Adopted TMDL(s) are addressing all

known impairments 6 (2%) 2 0 8 (1%)

4b. Other regulatory programs are addressing all known impairments 0 2 0 2 (<1%)

5. A TMDL is needed 260 (69%) 97 9 348 (54%)

TOTAL: 378 -- -- 648

Central Valley Water Board Meeting of 13-14 October 2016

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CWA Section 303(d) List Category 4a

– Being addressed by an adopted TMDL

Category 4b– Being addressed by a regulatory program other

than a TMDL

Category 5– New TMDL required

California vs USEPA List– USEPA list contains only Category 5

Agenda Item #16 Slide 14Central Valley Water Board Meeting of 13-14 October 2016

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State Policies Related to 303(d) List

State Water Board’s Water Quality Control Policy for Addressing Impaired Waters, Resolution 2005-0050 (‘Impaired Waters Policy’)

State Water Board’s Water Quality Control Policy for Developing California’s Clean Water Act Section 303(d) List (‘Listing Policy’)

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Policy for Impaired Waters

Regulatory Implications of 303(d) ListOptions when an impairment is identified:

1. Re-evaluate and delist2. Revise standards to make appropriate for natural

conditions3. Develop a TMDL program4. Certify that a Regulatory Program (not a TMDL)

will ensure standards are met

Agenda Item #16 Slide 16Central Valley Water Board Meeting of 13-14 October 2016

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Listing Policy

How to develop the 303(d) List

Adopted 2004– Resolution 2004-0065

Amended 2015– Resolution 2015-0005

Agenda Item #16 Slide 17Central Valley Water Board Meeting of 13-14 October 2016

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The Listing Policy

Numeric Objectives and Criteria:– Basin Plan Objectives

• Site Specific Objectives• DO, pH, fecal coliform bacteria• Maximum Contaminant Levels (MCLs) from State

Water Board – Division of Drinking Water

– California Toxics Rule (CTR)• CTR criteria are established standards

equivalent to WQOsAgenda Item #16 Slide 18Central Valley Water Board Meeting of 13-14 October 2016

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The Listing Policy

Narrative Water Quality Objectives:– Toxicity, temperature– “Evaluation Guidelines” to interpret– Listing Policy requirements

• Applicable• Protective• Scientifically-based and peer reviewed

Agenda Item #16 Slide 19Central Valley Water Board Meeting of 13-14 October 2016

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The Listing Policy

Interpreting Narrative ObjectivesExamples of evaluation guidelines:– OEHHA Fish Contaminant Guidelines

• Mercury, PCBs, Organochlorine Pesticides

– Aquatic Life Criteria (USEPA, DFW, UC Davis)• Bacteria (E. coli), Pesticides, Ammonia,

Temperature

Agenda Item #16 Slide 20Central Valley Water Board Meeting of 13-14 October 2016

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2014 Integrated Report

Lines of Evidence(Data + Evaluation guideline)

Decision(Determination of impairment)

Agenda Item #16 Slide 21

LOE 1 LOE 2 LOE 3

Decision

>17,000

Fact Sheet(one Fact Sheet for each water body-pollutant combination)

>11,000

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Scope of Assessments

Agenda Item #16 Slide 22

2012 2014Data period Jan. 2007 Aug. 2010

Water body segments 378 648

Pollutants >70 >200

Lines of Evidence >3,700 >17,000

Fact Sheets >1,800 >11,000

Central Valley Water Board Meeting of 13-14 October 2016

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2014 Integrated Report

Data Sources– Surface Water Ambient Monitoring

Program (SWAMP)

– Irrigated Lands Regulatory Program

– Other (19): Pyrethroid Working Group, NPDES, CalFed, citizen groups

Agenda Item #16 Slide 23Central Valley Water Board Meeting of 13-14 October 2016

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The Listing Policy

Data Analysis– Statistical test to determine impairment

• Tables in Listing Policy

– Toxicants vs. Conventional Pollutants• To List: Minimum of 2 exceedances for

toxicants vs. 5 exceedances for conventional• Generally ~10% of samples exceeding

standards = impairment

Agenda Item #16 Slide 24Central Valley Water Board Meeting of 13-14 October 2016

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The Listing Policy

Data Analysis– Listing vs. Delisting

• Larger data requirement to remove a water body from the 303(d) List

• Toxicants: 28 samples (≤2 exceedances)• Conventional: 26 samples (≤4 exceedances)

Agenda Item #16 Slide 25Central Valley Water Board Meeting of 13-14 October 2016

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The Listing Policy

Data Analysis– Spatially independent

– Temporally independent

– Representative of current conditions

Weight of Evidence

Agenda Item #16 Slide 26Central Valley Water Board Meeting of 13-14 October 2016

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Presentation Outline

Background and ImportanceResults for 305(b) ReportMethodology Region-Specific AssessmentsResults for 303(d) ListNext Steps

Agenda Item #16 Slide 27Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Additional considerations and methods: Mercury in fish tissue Water temperature Pyrethroids Total coliform Indicator bacteria & toxicity

Agenda Item #16 Slide 28

New for the Central Valley Integrated Report: Category 4b designations

Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Mercury in Fish Tissue– Listing Policy requires spatial and temporal

independence of data for the statistical test for impairment to be valid

Agenda Item #16 Slide 29Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Typical approach: – Average all samples collected

on same day at same location,treat as one sample result

– If sampling occurred on onlyone day/location, have too few results to assess impairment status

– Approach works well for water data

Agenda Item #16 Slide 30

1 sample result insufficient #

Average the results

Central Valley Water Board Meeting of 13-14 October 2016

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Mercury in Fish Tissue# of water body segments (WBs) assessed:* >200

# of new WBs included: 97

# of new WBs proposed for listing based on typical Listing Policy averaging method: 6

# of new WBs with a single elevated “sample”: 13(“sample” = several fish averaged together)

Region-Specific Assessments

Agenda Item #16 Slide 31Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Mercury in Fish Tissue– Fish move throughout a lake or stream and

accumulate mercury in their tissue over time Each fish is spatially and temporally independent

Agenda Item #16 Slide 32Central Valley Water Board Meeting of 13-14 October 2016

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AND applied statistical test to individual samples

Region-Specific Assessments

Mercury in Fish Tissue: Weight of evidence approach

Agenda Item #16 Slide 33

Averaged “sample” results

Average the results for individual fish

Central Valley Water Board Meeting of 13-14 October 2016

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Mercury in Fish Tissue# of water body segments (WBs) assessed: >200# of new WBs proposed for listing based on typical Listing Policy averaging method: 6# of new WBs proposed for listing based onweight of evidence approach: 25

# of WBs previously listed: 108

Region-Specific Assessments

Agenda Item #16 Slide 34Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Water Temperature– Can be quite variable spatially and

temporally within a given water body segment

Agenda Item #16 Slide 35Central Valley Water Board Meeting of 13-14 October 2016

Idealized channel cross-profiles (Strahler and Strahler, 1992)

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Region-Specific Assessments

Water Temperature– Assessment approach:

• Statistical tests (Listing Policy tables)

• Further review of water bodies with elevated statistics (weight of evidence approach, supported by Listing Policy)

Agenda Item #16 Slide 36Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Water Temperature# of water body segments (WBs) assessed: 204

# of WBs subject to further evaluation:* 37# of new WBs proposed for listing: 1

# of WBs previously listed: 10

* Most data limited to surface water grab samples from limited number of sites and limited time periods not considered representative of overall conditions when assessing potential impairments to fisheries

Agenda Item #16 Slide 37Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Pyrethroids

– Far more data submitted for 2014 Integrated Report than ever before

– Shift in type of data submitted

Agenda Item #16 Slide 38Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Agenda Item #16 Slide 39

Pyrethroids 2012 (total)

2014(total)

# of water body segments (WBs) assessed 25 94# of assessments for “pyrethroids” group (sediment toxicity tests) 13 14

# of assessments for individual pyrethroid chemicals 15 572

# of WBs impaired by pyrethroids 14 23# of impairment listings for “pyrethroids” group 13 14

# of WB-pollutant impairment listings for individual pyrethroid chemicals 2 45

Total # of pyrethroid-related listings 15 59Central Valley Water Board Meeting of 13-14 October 2016

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Pyrethroids 2012 (total)

2014(total)

# of water body segments (WBs) assessed 25 94# of assessments for “pyrethroids” group (sediment toxicity tests) 13 14

# of assessments for individual pyrethroid chemicals 15 572

# of WBs impaired by pyrethroids 14 23# of impairment listings for “pyrethroids” group 13 14

# of WB-pollutant impairment listings for individual pyrethroid chemicals 2 45

Total # of pyrethroid-related listings 15 59

Region-Specific Assessments

Agenda Item #16 Slide 40

Only 9 new water body segments identified as impaired Of these 9, 6 are tributaries to water bodies

identified as impaired on the 2012 List Only 3 new areas of concern

Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Total Coliform– Can come from non-fecal sources

– USEPA no longer recommends as indicator for assessing the support of recreation beneficial use

– Consequently, data submitted for the 2014 Integrated Report were not considered

Bacteria assessments limited to E. coli and fecal coliform

Agenda Item #16 Slide 41Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Consolidated “Indicator Bacteria” data:– Fecal coliform, E. coli, bacteria

Consolidated “Toxicity” data:– Sediment, water & unknown toxicity

Purpose:– Improve accuracy of 303(d) List – Make 303(d) List easier to understand

Agenda Item #16 Slide 42Central Valley Water Board Meeting of 13-14 October 2016

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Region-Specific Assessments

Additional considerations and methods: Mercury in fish tissue Water temperature Pyrethroids Total coliform Indicator bacteria & toxicity

Agenda Item #16 Slide 43

New for the Central Valley Integrated Report: Category 4b designations

Central Valley Water Board Meeting of 13-14 October 2016

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Category 4b Designations

Definition: Water body-pollutant impairments being addressed by a regulatory program other than a TMDL

USEPA Guidance (2005):A TMDL is not required if … “[o]ther pollution control requirements (e.g., best management practices) required by local, State or Federal authority” are stringent enough to implement applicable water quality standards … within a reasonable period of time.”

Agenda Item #16 Slide 44Central Valley Water Board Meeting of 13-14 October 2016

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Category 4b Designations

USEPA Requirements: 1. Statement of the problem2. A description of pollutant controls 3. An estimation of when water quality standards

will be attained4. A schedule for implementing pollution controls5. Monitoring 6. A commitment to revise pollution controls as

necessary

Agenda Item #16 Slide 45Central Valley Water Board Meeting of 13-14 October 2016

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Category 4b Designations

First time the Central Valley Region will have Category 4b assessments included in the Integrated Report

Demonstrate the progress and effectiveness of our regulatory programs and implementation of waste discharge requirements

Indicates where TMDLs are not needed and helps us to better focus TMDL development efforts

Agenda Item #16 Slide 46Central Valley Water Board Meeting of 13-14 October 2016

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Category 4b Designations

Irrigated Lands Regulatory Program management plans are addressing 76 pesticide impairments for 53 water body segments<based on data through August 2010>

Agenda Item #16 Slide 47

Pesticide / # of WB

segments

2012 Total

Listings

NewListings

For 2014

Chlorpyrifos 29 9

Diazinon 19 3

Diuron 3 11

Malathion 1

Simazine 1

TOTAL: 53 23

Central Valley Water Board Meeting of 13-14 October 2016

Impaired Waters Being Addressed by ILRP

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Presentation Outline

Background and ImportanceResults for 305(b) ReportMethodology Region-Specific AssessmentsResults for 303(d) ListNext Steps

Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016 Slide 48

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Results for 303(d) List

Agenda Item #16 Slide 49

2012(total)

2014(total)

Previous cycle’s listings 341 707

New listings 389 309

Delistings 23 38

Total listings (1) 707 978 (2)

Net increase in listings 107% 38%

Listings addressed by adopted TMDLs and other regulatory programs 62 151

# of WB-pollutant assessments >1,800 >11,000

Central Valley Water Board Meeting of 13-14 October 2016

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2014 Proposed 303(d) Listings

Agenda Item #16 Slide 50

* “Other” includes: Invasive species, bioassessments, temperature, pH, and alkalinity

Central Valley Water Board Meeting of 13-14 October 2016

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2014 Proposed 303(d) Listings by Basin

Agenda Item #16 Slide 51

* “Other” includes: Invasive species, bioassessments, temperature, pH, and alkalinity

2% of Central Valley17% of all listings

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Water Body Segments with at least one 303(d) Listing Addressed by Adopted TMDLs & Other Programs

Agenda Item #16 Slide 52

Adopted TMDLs (75)<Category 4a>

Other Programs (76)<Category 4b>

Central Valley Water Board Meeting of 13-14 October 2016

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2014 Proposed Delistings

Agenda Item #16 Slide 53

38 delistings

Success stories!Pesticides: 13 delistings for diazinon & chlorpyrifos

Additional data, criterion changes & corrections

Central Valley Water Board Meeting of 13-14 October 2016

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Presentation Outline

Background and ImportanceResults for 305(b) ReportMethodology Region-Specific AssessmentsResults for 303(d) ListNext Steps

Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016 Slide 54

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Next Steps for 2014 Integrated Report

Comment Period: Closes October 20th Central Valley Water Board Hearing:

– December 5-6, 2016 Board Meeting– Board approval to transmit Integrated Report and

proposed 303(d) List to State Water Board State Water Board Review & Approval:

~July 2017 USEPA Review & Approval:

~December 2017Agenda Item #16 Slide 55Central Valley Water Board Meeting of 13-14 October 2016

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Upcoming Activities

Next Central Valley Integrated Report cycle is scheduled for 2020

We will not wait that long to look at new data and bring updated assessments and delisting recommendations to the Board and public!

Agenda Item #16 Slide 56Central Valley Water Board Meeting of 13-14 October 2016

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Upcoming Activities

Assess high priority data sets for 2010-2016

Evaluate effectiveness of ongoing management plans

Identify where regulatory programs are addressing impairments and water quality standards are being met

Identify where TMDLs are still needed and better prioritize TMDL development efforts

Agenda Item #16 Slide 57Central Valley Water Board Meeting of 13-14 October 2016

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Preliminary Assessments

Staff have already begun reviewing recent ILRP data

Staff’s preliminary assessments indicate:– Ongoing management plans are successfully

addressing impairments

– Several pesticide listings proposed for 2014 Cycle may be delisted once we incorporate new data in our assessments

Agenda Item #16 Slide 58Central Valley Water Board Meeting of 13-14 October 2016

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Upcoming Activities

Temperature Evaluations:– Initiated efforts with UC and Fishery Agencies

• Evaluate existing criteria• Develop methodology to adjust based on flow, climate

change and other Central Valley factors• Prioritize waters for pilot studies and baseline for

climate change

– Use results in future Integrated Reports

Agenda Item #16 Slide 59Central Valley Water Board Meeting of 13-14 October 2016

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Questions?

Agenda Item #16 Slide 60Central Valley Water Board Meeting of 13-14 October 2016

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Agenda Item #16 Slide 61Central Valley Water Board Meeting of 13-14 October 2016

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Proposed New 303(d) Listings

Agenda Item #16 Slide 62

Percent of Total Listings

2012 List

Proposed New Listings

Total # of Listings 706 309Pesticides (Current Use) 22% 24%

Mercury 15% 10%Toxicity 13% 14%

Metals 11% 12%

Indicator Bacteria 8% 10%

Pesticides (Legacy) 10% 3%Nutrients 6% 11%Salinity 5% 7%Other Organics 3% 1%Sediment 0.4% 0%Other 6% 7%

Central Valley Water Board Meeting of 13-14 October 2016