2014 Integrated Report...Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016...
Transcript of 2014 Integrated Report...Agenda Item #16 Central Valley Water Board Meeting of 13-14 October 2016...
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
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
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
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
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
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
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
Central Valley Water Board Meeting of 13-14 October 2016
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
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
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
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
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
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
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
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’)
Agenda Item #16 Slide 15Central Valley Water Board Meeting of 13-14 October 2016
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
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
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
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
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
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
Central Valley Water Board Meeting of 13-14 October 2016
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Central Valley Water Board Meeting of 13-14 October 2016
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
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
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
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
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
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
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
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
Questions?
Agenda Item #16 Slide 60Central Valley Water Board Meeting of 13-14 October 2016
Agenda Item #16 Slide 61Central Valley Water Board Meeting of 13-14 October 2016
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