HomeMy WebLinkAbout07.a.1) (Handout) Update on the proposed Nutrient Watershed Permit�flandou.�� 7a. l�
NUTRIENT
WATERSHED PERMIT
Curtis W. Swanson
Director of Operations
March 20, 2014
Central Contra Costa Sanitary District
3/20/2014
2
High Direct N Loads to SFB Subembayments
60
Chesapeake
50
do
�E
�g
--�
d
two
30
Delaware
O
N
m
MD Coastal Bays
U
20
O
Barnegat LSB
O
Florida Bay Pensacola Narragansett 0
10
1" W CEN Su 16
so 0
0 SPB
0
0 10 20 30 40 50 60 70 90
Nitrogen Load (g N m 2 yr-1)
® National Estuarine
ExP� Workgroup (2010)
0 SFEI (2013)
3/20/2014
2
Sources of Nitrogen 40000
DIN = nitrate + ammonium
Source and seasonality vary by 2m
subembayment
Mij
4aoo
0
0
DIN: Lower South Bay (kg V)
DIN: Suisun (kg d'1)
Delta NOS
J,Delta NH4'
�1
Stormwater NO3'+ NH4'
POTW NO3
POTW NH4'
Multi- Permit Plan
• Gather information
Novkk and Sam 2033
• Continue load response modeling & studies
• May consider performance caps
�; - • Refine understanding and analyses
�. • May consider load reduction, if necessary
3/20/2014
3
3/20/2014
Components of First Permit
Costs Related to Nutrient Permit
$17,500 per year $130,000 to Completed
$200,000 per year
No Nutrient Caps or Limits This Time
CCCSD Still Has An Ammonia Limit:
Limit: 5500 Kg per day
2013 Average Discharge: 3450 Kg per day
February 6, 2014
• Tentative Order Released
March 10, 2014
• Comment Period Ends
April 9, 2014
• Public Hearing
April 9 or May 14, 2014
• RWQCB Adoption
July 1, 2014 to June 30, 2019
Permit Effective