Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.
-
Upload
logan-moreno -
Category
Documents
-
view
215 -
download
0
Transcript of Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.
![Page 1: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/1.jpg)
Regulatory Update
Carrie Austin, SF Bay Water Board
Michelle Wood, CV Water Board
![Page 2: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/2.jpg)
Water Quality Management Process
Monitoring
Special Discharger Studies
CWA 303(d)
Planning
Assessment
Implementation
Evaluation
Basin Plan- Uses- Objectives- Impl. Program- TMDLs
WDRsWaiversProhibitions
Review- Monitoring Results- Mgmt. Plans
Water QualityImprovement
![Page 3: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/3.jpg)
SF Bay Area Mercury TMDLs
![Page 4: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/4.jpg)
Walker Creek Fish Tissue Mercury Water Quality Objectives
For smaller preyfish0.05 mg Hg/kg fish
For larger preyfish
0.1 mg Hg/kg fish
![Page 5: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/5.jpg)
Mercury Mine Wastes
Gambonini Mine Site Soulajule Watershed Mines Downstream Depositional Areas
![Page 6: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/6.jpg)
Allocation: Allocation: 5 mg/kg total mercury in sediment5 mg/kg total mercury in sediment
Management action: Management action: erosion controlerosion control
Remediation Reduced Gambonini Mine Mercury Loads by 90%
Mine Remediation Post-Remediation
![Page 7: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/7.jpg)
Soulajule Watershed
Allocations: 0.04 ng/l methylmercury in reservoir0.5 mg/kg particulate mercury discharged
Implementation actions: Evaluate and resolve problem
![Page 8: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/8.jpg)
Downstream Depositional Areas
Allocation: 0.5 mg/kg total mercury in sediment
Management question ‘C’: How will erosion
control & riparian restoration affect MeHg?
![Page 9: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/9.jpg)
Tomales Bay Mercury,
Nutrients & Siltation TMDL
![Page 10: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/10.jpg)
Guadalupe & SF Bay Hg
TMDLs
![Page 11: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/11.jpg)
Guadalupe River
Watershed Hg TMDL
![Page 12: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/12.jpg)
SF Bay Hg TMDL
![Page 13: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/13.jpg)
Sources, Loads, and AllocationsSources, Loads, and Allocations
0
200
400
600
800
1,000
(kilograms per year)
Current Load Allocation
BE = Bed Erosion
CV = Central Valley
G = Guadalupe
G
BE
cv
G
cv
BE
113
1711
0
40
80
120
Municipal Wastewater
1970 Load (Estimated)
Current Load
Allocation
![Page 14: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/14.jpg)
New Water Quality Objectives in SF Bay
0.2 ppm mercury in large predator fish
0.03 ppm mercuryin prey fish
California least tern
![Page 15: Regulatory Update Carrie Austin, SF Bay Water Board Michelle Wood, CV Water Board.](https://reader036.fdocuments.in/reader036/viewer/2022062511/5514d960550346b0478b53ac/html5/thumbnails/15.jpg)
Next: Central Valley Hg TMDLs