TMDL STANDARD TEMPLATE

The project limits are in the (Insert Name of Watershed(s)).  The Total Maximum Daily Loads (TMDLs) are as follows:

            (Insert here the TMDLs paragraphs from the GIS website)

 

 

 

FOR YOUR EXAMPLE

(When the projects limits are in the Los Angeles River watershed, the TMDL information may be presented as below)

 

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The project limits are in the Los Angeles River Watershed.  The Total Maximum Daily Loads (TMDLs) are as follows:
Los Angeles River
Established TMDLs


Los Angeles River Trash TMDL
The Los Angeles River Trash TMDL became effective August 28, 2002. Caltrans is proceeding with Trash TMDL Implementation Projects, which are to retrofit Gross Solid Removal Devices (GSRDs) at the existing drainage outfalls in the rights-of-way. Table A lists those Trash TMDL Implementation Projects that are either in construction or completed. Any projects that overlap within the limits of freeway corridors listed in Table A are not required to consider GSRDs for those overlapping limits. However, Project Engineers shall consider placing infiltration basins or media filters as much as possible in lieu of GSRDs at existing and proposed drainage systems. 


Table A

 

 

PM

Status

EA

Route

From

To

226611

405

30.31

36.15

completed

226711

60

2.7

6.6

completed

710

22.5

23.8

2266A1

5

27.62

28.15

completed

10

9.02

13.82

90

1.84

2.70

2267A1

10

5.59

8.80

Completed

91

10.25

13.88

105

8.25

13.15

110

21.65

23.61

231311

2

15.40

21.46

Completed

101

7.21

7.21

170

14.78

19.92

134/710

13.34

13.34

210

22.73

23.88

405

25.46

29.41

235901

5

16.35

16.35

completed

101

12.70

26.50

134

0.00

9.86

 

Los Angeles River Nitrogen Compounds and Related Effects TMDL
 The Los Angeles River Nitrogen Compounds and Related Effects TMDL became effective March 23, 2004. The TMDL requires the Storm Water NPDES Permittees to submit a Monitoring Work Plan by March 23, 2005 to estimate nitrogen loadings associated with runoff from the storm drain systems.  County of Los Angeles has submitted the Monitoring Work Plan as required on behalf of Caltrans and other Storm Water NPDES Co-Permittees in the watershed. Targeted pollutants are Total ammonia as nitrogen (NH3-N), Nitrate-nitrogen (NO3-N), nitrite-nitrogen (NO2-N), and Nitrate nitrogen plus nitrite-nitrogen (NO3-N + NO2-N).The Department's monitoring data depicts Caltrans discharges to be below the TMDL limits, thus no additional measures are needed to be considered for meeting the conditions of the Nitrogen TMDL.


Los Angeles River and Tributaries Metals TMDL
The Los Angeles River and Tributaries Metals TMDL became effective on January 11, 2006. Caltrans will work with 5 groups of Responsible Agencies toward compliance of the TMDL. Targeted Pollutants are total Cu, Pb, Zn, Cd and Se. Project Engineers shall consider treatment controls for the project and consult with the District NPDES Storm Water Coordinator.


Total Maximum Daily Loads for Indicator Bacteria in the Los Angeles River
The Total Maximum Daily Loads for Indicator Bacteria in the Los Angeles River became effective on March 23, 2012. The TMDL requires the Responsible Agencies, including Caltrans, to reduce number of exceedance days of bacteria concentrations in the Los Angeles River and achieve waste load allocations in 25 years. Caltrans will be working with groups of Responsible Agencies to jointly comply with the TMDL. Project Engineer shall consider treatment controls for the project and consult with the District NPDES Storm Water Coordinator.


Dominguez Channel and Greater Los Angeles and Long Beach Harbor Waters Toxic Pollutants TMDL
Dominguez Channel and Greater Los Angeles and Long Beach Harbor Waters Toxic Pollutants TMDL became effective on March 23, 2012. Targeted pollutants are copper, lead, zinc, PAH, DDT, PCBs, Benzopyrene and Dieldrin for water column in the channel and harbors, and for sediments in the harbors.  The TMDL requires the dischargers of the Los Angeles River and the San Gabriel River to monitor water quality at the mouth of each River. Caltrans will participate in groups of agencies to jointly comply with the TMDL.  Project engineers shall consider treatment controls for the project and consult with the District NPDES Storm Water Coordinator.