1. No category

Jordan River Total Maximum Daily
Load (TMDL) Phase 1
Presentation at Salt Lake County Watershed
Symposium
September 27, 2012
http://www.waterquality.utah.gov/TMDL/Jordan_TMDL.htm
What causes low
oxygen in Jordan
River?
1. Excess Organic Matter
2. River bottom muck
3. Management
Measuring Organic Matter in the
Jordan River
• Used a model to better understand what was happening
in the river
• Model underpredicted SOD
- Suggests accumulation over long period of time
FPOM=
CPOM=
COURSE
PARTICULATE
ORGANIC
MATTER
(>1 MM)
Leaves and Muck
FINE
PARTICULATE
ORGANIC
MATTER
(<1 MM)
DOM=
DISSOLVED
ORGANIC
MATTER
Photos: Hogsett
Jordan River TMDL
Phase 1
Bulk Allocation - Existing OM loads (kg/yr) Lower Jordan River
Loads to
Lower
Jordan
Contribution
(%)
Loading
Goal
Reduction
(%)
Upstream of
2100 South
469,062
20%
284,996
39%
Downstream
Discrete of 2100
Sources South
824,264
35%
482,096
42%
Upstream of
2100 South
752,429
32%
546,205
27%
Downstream
of 2100
South
303,749
13%
140,439
54%
2,349,504
100%
1,453,736
38%
Source
Diffuse
Sources
Total
Jordan River Phased TMDL Schedule
•
•
•
•
Phase I: Identifying the problem
– Development of models to calculate loading
Phase 2 (2012-2018): Understanding the problem
– Intensively collect data to accurately assess OM loading, both in
time and space
– Investigate and initiate changes in behavior and management to
reduce OM loading
Phase 3 (2018-2023)
– Complete designs for structural point and nonpoint source
controls
Phase 4 (2023-2028)
– Construction of capital improvements, if necessary
Both point and non-point sources will bear
responsibility to reduce OM loads to achieve the DO
standards
Jordan River Phase 1 Schedule
TMDL Process Action
30-Day Public Comment Period on Draft TMDL
Date
January 3, 2012 to March
31, 2012
For comments and resultant changes go to:
http://www.waterquality.utah.gov/TMDL/JORDAN/index.htm
TMDL Modified As Appropriate Based on Public Input
June 6, 2012
For final draft go to:
http://www.waterquality.utah.gov/TMDL/JORDAN/index.htm
If Implementation Costs Exceed Legislative Thresholds, Submit
TMDL for either Committee or Full Legislative Action
There are no costs associated
with implementation of
Phase 1 of the TMDL.
Water Quality Board Approval of TMDL / Petition to Initiate
Rulemaking to Adopt TMDL into UAC R317-1-7.TMDLs.
June 27, 2012
30 Day DAR Public Notice Period
August 1, 2012 - August 31,
2012
Petition Water Quality Board for Formal Adoption of TMDL into
Rule
Submit TMDL to EPA for Formal Approval
EPA approval
September 26, 2012
October 1, 2012
January 2013
Completed?
Jordan River Phased TMDL Schedule
•
•
•
•
Phase I: Identifying the problem
– Development of models to calculate loading
Phase 2 (2012-2018): Understanding the problem
– Intensively collect data to accurately assess OM loading, both in
time and space
– Investigate and initiate changes in behavior and management to
reduce OM loading
Phase 3 (2018-2023)
– Complete designs for structural point and nonpoint source
controls
Phase 4 (2023-2028)
– Construction of capital improvements, if necessary
Both point and non-point sources will bear
responsibility to reduce OM loads to achieve the DO
standards
Special Studies on the Jordan River
1. 2011-2012: Intensive Monitoring Year for Jordan
River Water Quality Sampling
• Shared effort between DWQ and Partner
Agencies
• Monthly sampling
• Jordan River / Utah Lake is “targeted” basin for
2014 State NPS funding
Photo: SLCO
Special Studies on the Jordan River
2. Continuous monitoring along the Jordan River
• Jordan River/Farmington Bay Water Quality
Council
• DO, conductivity, temperature, turbidity, pH, fDOM
• Utah Lake Outlet, Jordan River at 1700 South,
Surplus Canal, 500 North, Cudahy Lane,
Burnham Dam, State Canal
Photos: YSI
Dissolved Oxygen Study August 2012
Lower River, 8/22-28/2012, DO
5
4.9
4.8
DO (mg/L)
4.7
4.6
4.5
4.4
4.3
2100 S
500 N
Center St
Burnham
4.5 mg/L
4.2
4.1
4
18:00
6:00
18:00
6:00
2100 S sat
500 N sat
Center St sat
Burnham sat
18:00
6:00
18:00
6:00
18:00
time
6:00
18:00
6:00
18:00
6:00
18:00
6:00
18:00
Special Studies on the Jordan River
3. Re-aeration feasibility study on Jordan River
• Salt Lake City Public Utilities
– Model effects of off-channel aeration
– Pilot study: size, use, costs, location
– Explore use when DO concentrations are at their
lowest
Special Studies on the Jordan River
• Jordan River Flow Modification Study
– River Network, DWQ and Salt Lake City
• Explore flow regime in the Jordan River to determine if
modified flow management by Salt Lake City might be
used to improve water quality and habitat structure on the
lower Jordan
• Timely, orchestrated high-flow events to possibly flush OM
in lower Jordan
• Could increased flows suspend
and transport the problematic
OM? If so, what flows?
• What would be the best
timing (e.g., Spring? Fall?)
and pattern (e.g., pulses?)
2100 S and Surplus Canal
Special Studies on the Jordan River
Jordan River Flow Modification Study (cont.)
•
•
•
•
Is there an on-going flow regime that would help maintain the channel
and water quality?
What are the related threats and challenges? (e.g., Bank stability
concerns? Flooding? Water rights implications?)
What are the related benefits? (e.g., Improvements in habitat
structure? Improvements in other parameters? Degradation?)
Where would the OM be deposited? Would it be
collectable/removable?)
Special Studies on the Jordan River
4. Understanding Sources and Fate of Organic Matter
• Partnership between DWQ, University of Utah and Utah State
University
USU: Dr. Michelle Baker
• Continuous monitoring of: stream flow, DOM, SPOM fluxes, DO,
turbidity, chlorophyll-a, and CDOM (chromophoric DOM) using
optical sensors
• Discrete measurements of: CPOM fluxes at each sample
location, benthic organic matter standing stocks; biological
fluxes
• 7800 S, 5400 S, 3300 S, 2300 S, 1700 S, 500 N, Cudahy Lane
Deliverables from Baker’s
Study
1. Quantity major organic matter fluxes on the Jordan River mainstem
– When and where major inputs occur;
– Due to algae, small detritus, leaves, primary production in the
river, or outside the river
2. Assess relationship between sensor data and grab sample
3. Rating curves for future flow calculations.
4. Identify “trouble” areas – segments perhaps where storm water flows
should be directly measured to account for those inputs.
5. Assess relationships among VSS, TSS and chlorophyll to guide future
water quality monitoring.
6. Estimate standing stocks of multiple organic matter pools that can be
used to scale-up chamber based measures of SOD rates of specific
detritus pools.
Special Studies on the Jordan River
4. Understanding Sources and Fate of Organic Matter
• Partnership between DWQ, University of Utah and Utah State
University
U of U: Dr. Ramesh Goel
• A detailed speciation and identification of sources of organic
matters (both dissolved and suspended) to better understand
DO dynamics in the Jordan River.
Deliverables from Goel’s
Study
1.
2.
3.
4.
Establish a working protocol for bulk sediment organic carbon
content and speciation in the form of CPOM and FPOM
– Is there a correlation between type of carbon (in forms of bulk,
CPOM, and FPOM volatile solids (VS) and total organic carbon
(TOC) content).
Quantify amount of CPOM originating in the urbanized watershed and
introduced into the Lower Jordan River during storm events.
Quantify organic degradation within the sediments of the Lower
Jordan River and the effects on ambient water quality due to methane
and ammonia fluxes using in-situ and lab methods.
Investigate hyporheic exchanges in the Upper Jordan River and
relate this beneficial sediment-water interaction to ambient water
quality.
Coordinated Sampling on the Jordan River
Monthly meetings being held with DWQ, Salt Lake
County Flood Control, Salt Lake City Public Utilities,
JR/FB WQC, U of U, USU
– What additionally should we be
sampling for?
– With regular monitoring and storm
water monitoring?
• When in the storm’s timing is
most critical to capture?
– Total Suspended Solid (TSS) &
Volatile Suspended Solids (VSS) as
surrogate for FPOM
– Carbonaceous biochemical oxygen
demand (CBOD)
– Suspended Sediment Concentration
(SSC)
Thank you!
http://www.waterquality.utah.gov/TMDL/Jordan_TMDL.htm
Hilary N. Arens
[email protected]
801-536-4332
Carl Adams
[email protected]
801-536-4330