HomeMy WebLinkAbout12.a. Receive an overview of the third Nutrient Watershed Permit requirementsPage 1 of 4
Item 12.a.
110ENTRAL SAN
December 19, 2024
FROM: RITA CHENG, SENIOR ENGINEER
REVIEWED BY: LORI SCHECTEL, ENVIRONMENTALAND REGULATORY COMPLIANCE
DIVISION MANAGER
GREG NORBY, DEPUTY GM - ENGINEERING AND OPERATIONS
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE AN OVERVIEW OF THE THIRD NUTRIENT WATERSHED
PERMIT REQUIREMENTS
Staff will present an overview of the third Nutrient Watershed Permit requirements.
Strategic Plan Tie -In
GOAL TWO: Environmental Stewardship
Strategy 1 - Achieve compliance in all regulations
ATTACHMENTS:
1. Presentation
December 19, 2024 Regular Board Meeting Agenda Packet - Page 56 of 97
Page 2 of 4
Attachment 1
December 19, 2024
OVERVIEW OF THE THIRD
NUTRIENT WATERSHED
PERMIT REQUIREMENT
Board of Directors Meeting
Lori Schectel
Environmental and Regulatory Compliance
Division Manager
Rita Cheng, PE
Senior Engineer
Third Nutrient Watershed Permit (order R2-2024-0013)
Adopted 7/10/2024, Effective 10/1/2024
Interim Limits mmmWinal
Limits
Central San's Final TIN Limits:
2,300 kg/day (dry season average)
Effective dry season 2035
Central San's Interim TIN Limits:
Aggregate Mass Load Limit:
4,300 kg/day (dry season average)
26,700 kg/day (dry season average)
Applicable to dry seasons of 2025-2034
If the sum of all individual Dischargers' TIN
mass loads is greater than the Aggregate Mass
Load Limit, the Dischargers whose TIN mass
loads exceed their individual limit shall be in
violation of their individual limitations.
TIN: Total Inorganic Nitrogen
December 19, 2024 Regular Board Meeting Agenda Packet - Page 57 of 97
Page 3 of 4
Third Nutrient Watershed Permit
Compliance Progress Reports, Regional Planning, Science Plan, and
Data Reporting Milestones
2026 p
2024 Q1: Perform Alternatives Analyst,.ldentifyacompliance Q2028"
L 4 pathway. If Discharger has already identified a
ompliance pathway, provide a status update. Provide a Ql: Develop Design Progress Report. For capital projects
QTreatment Plant Optimization Schedule, if applicable. that are part of the compliance plan, provide project
Oct l: Permit effective date Feb: Report Season TIN load in Annual NPDES details and evidence that the project has moved into the
Q4: Provide 2024 dr flow and concentration por le design stage.
y -season Reports and electronic SMR
nutrient data`* to BACWA for Group Annual Report Feb: Report Dry Season TIN load in Annual NPDES
(GAR) Apr 1: BACWA to submit 2026 GAR Reports and electronic SMR
June 1: BACWA to submit an updated Science Plan and
**(note 2024 dry -season data is NOT counted toward the Apr 1: BACWA to submit 2028 GAR
thirdpermit requirements) Schedule June 1: BACWA to submit an updated Science Plan and
Monthly: Submit nutrient data through SMRs and DMRs July Ii RAMA to submit Status Report on Regional Schedule
Stu
Oct 1: Provide 026 dry -season (May -Sept) flow and Oct 1: Provide 2028 dry -season (May -Sept) flaw and
nutrient concentration data to BACWA for 2027 GAR nutrient concentration data to BACWA for 2029 GAR
Monthly: Submit nutrient data through SMRs and DMRs Monthly: Submit nutrient data through SMRs and DMRs
QI: Submit Compliance Plan. Describe proposed
Ql: Identify Preliminary Alternatives for meeting final improvements and in implementation schedule, including Of: provide Design Progress Report and Compliance
limits design and construction. Provide a governance plan for Update: summarize progress towards meeting final
Feb: Report Dry Season TIN load in Annual NPDES Reports Multi -Benefit Projects, if applicable. effluent limits, including a detailed status update on
need to conduct pilot -die, and electronic SMR Feb: Report Dry Season TIN load in Annual NPDES Reports capital projects.
to de�ign, (2) unsuccessful pilot Apr 1: BACWA to submit 2025 GAR and electronir SMR Feb: Report Dry Season TIN load in Annual NPDES Reports
that "'rt'and electronic SMR
cause the Di,ch
T� omm, (3) the need to develop lune l:BACWA to submit an updated Science Plan and Apr 1: BACWAto submit 202]GAR Mar 31: BACWA to submit Report of Waste Discharge
- Schedule June 1: BACWA to submit an updated Science Plan and Mar 31: BACWA to submit Final Report for Regional
July 1: BACWA to submit Scoping Plan for Regional Schedule Planning Study
Planning Study July 1: BACWA to submit Status Report on Regional Apr 1: BACWA to submit 2029 GAR
Oct 1: Provide 2025 dry "season (May-SePt) flow and Planning Study
nutrient concentration data to BACWA for 2026 GAR O Oct 1: Provide 2027 dry-season(May-Sept)flow and June1:BACWAtosubmitan updated Science Plan and
each o and po,ide 6 Monthly: Submit nutri—data through SMRsand DMRs nutrient concentration data to BACWA for 2028(A O Schedule
"mahmn that it isfis, on, of Monthly: Submit nutrient data through SMRs and DMRs Monthly: Submit nutrient data through SMRs and DMR,
2025 2027` 2029"
ddid
December 19, 2024 Regular Board Meeting Agenda Packet - Page 58 of 97
Milestones
Influent +
Effluent:
Twice/month (Ammonia, Nitrite -
Requires Dischargers to describeNitrate,
toward meeting 40
Effluent
TIN)
Once/month (Total Phosphorous)
progress
percent dry -season load
Bay -wide
and
Reporting
Nutrient
Influent:
Once/quarter (Ammonia, Nitrite -
reduction requirement
within 10 years
Monitoring
Nitrate, Total Kejdahl Nitrogen (TKN))
• Twice/Year (Total Phosphorous)
10
Regional
Funding for
Requires reporting of region -wide
Requires Dischargers to
planning efforts to meet the final
I& Planning
Science
continue funding the Nutrient
effluent limitations
Report
Plan
Science Program
Compliance Progress Reports, Regional Planning, Science Plan, and
Data Reporting Milestones
2026 p
2024 Q1: Perform Alternatives Analyst,.ldentifyacompliance Q2028"
L 4 pathway. If Discharger has already identified a
ompliance pathway, provide a status update. Provide a Ql: Develop Design Progress Report. For capital projects
QTreatment Plant Optimization Schedule, if applicable. that are part of the compliance plan, provide project
Oct l: Permit effective date Feb: Report Season TIN load in Annual NPDES details and evidence that the project has moved into the
Q4: Provide 2024 dr flow and concentration por le design stage.
y -season Reports and electronic SMR
nutrient data`* to BACWA for Group Annual Report Feb: Report Dry Season TIN load in Annual NPDES
(GAR) Apr 1: BACWA to submit 2026 GAR Reports and electronic SMR
June 1: BACWA to submit an updated Science Plan and
**(note 2024 dry -season data is NOT counted toward the Apr 1: BACWA to submit 2028 GAR
thirdpermit requirements) Schedule June 1: BACWA to submit an updated Science Plan and
Monthly: Submit nutrient data through SMRs and DMRs July Ii RAMA to submit Status Report on Regional Schedule
Stu
Oct 1: Provide 026 dry -season (May -Sept) flow and Oct 1: Provide 2028 dry -season (May -Sept) flaw and
nutrient concentration data to BACWA for 2027 GAR nutrient concentration data to BACWA for 2029 GAR
Monthly: Submit nutrient data through SMRs and DMRs Monthly: Submit nutrient data through SMRs and DMRs
QI: Submit Compliance Plan. Describe proposed
Ql: Identify Preliminary Alternatives for meeting final improvements and in implementation schedule, including Of: provide Design Progress Report and Compliance
limits design and construction. Provide a governance plan for Update: summarize progress towards meeting final
Feb: Report Dry Season TIN load in Annual NPDES Reports Multi -Benefit Projects, if applicable. effluent limits, including a detailed status update on
need to conduct pilot -die, and electronic SMR Feb: Report Dry Season TIN load in Annual NPDES Reports capital projects.
to de�ign, (2) unsuccessful pilot Apr 1: BACWA to submit 2025 GAR and electronir SMR Feb: Report Dry Season TIN load in Annual NPDES Reports
that "'rt'and electronic SMR
cause the Di,ch
T� omm, (3) the need to develop lune l:BACWA to submit an updated Science Plan and Apr 1: BACWAto submit 202]GAR Mar 31: BACWA to submit Report of Waste Discharge
- Schedule June 1: BACWA to submit an updated Science Plan and Mar 31: BACWA to submit Final Report for Regional
July 1: BACWA to submit Scoping Plan for Regional Schedule Planning Study
Planning Study July 1: BACWA to submit Status Report on Regional Apr 1: BACWA to submit 2029 GAR
Oct 1: Provide 2025 dry "season (May-SePt) flow and Planning Study
nutrient concentration data to BACWA for 2026 GAR O Oct 1: Provide 2027 dry-season(May-Sept)flow and June1:BACWAtosubmitan updated Science Plan and
each o and po,ide 6 Monthly: Submit nutri—data through SMRsand DMRs nutrient concentration data to BACWA for 2028(A O Schedule
"mahmn that it isfis, on, of Monthly: Submit nutrient data through SMRs and DMRs Monthly: Submit nutrient data through SMRs and DMR,
2025 2027` 2029"
ddid
December 19, 2024 Regular Board Meeting Agenda Packet - Page 58 of 97
Page 4 of 4
Questions?
December 19, 2024 Regular Board Meeting Agenda Packet - Page 59 of 97