TMDLs in the Monterey Bay Region of California

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This page summarizes the development and implementation of Total Maximum Daily Load (TMDL) plans in the Monterey Bay region of California. The page is being created by the ENVS 560/L Watershed Systems class at CSUMB.

Page editing notes & scoring rubric

This section of this page will be deleted once the page is fleshed out. Instructions to students:

  • When you START working on the page, enter your initials here (and save):
    • Initials: _______. Mainly working on: _______
    • Initials: PKD. Mainly working on: Monterey Bay area listings
    • Initials: AAY. Mainly working on: Regionally approved TMDLs considered
  • When you're done, remove your initials, and save.
  • When done with a session, email everyone to say "I've just added _____".
  • There are 8 students. Each student should flesh out one section. The sections should be fleshed out in order if possible.
  • As you go, read everyone else's work and edit as necessary.
  • The whole page needs to be of good quality for anyone to get a full score. Individuals would only be downgraded if they made only minimal contribution. All would be downgraded if page fell short of being a brief but informative snapshot of a few example TMDLs in our immediate vicinity.

Background

Under the federal Clean Water Act, all impaired (e.g. polluted) waters in the USA must be placed on a list called the 303d list. A remediation plan must then be developed and implemented for each listing on each impaired water body. These plans are called TMDLs, referring to the goal of defining and achieving a total maximum daily load of each pollutant within each body.

Monterey Bay area listings

The 303d for the Central Coast Region of California is maintained by the Central Coast Regional Water Quality Control Board and can be viewed here

The closest listings to Monterey Bay include:

  • For each item on this list, we need:
    • Water body
    • Pollutant
    • Priority or category of listing. See here for some indication of category.
    • Status (in development, approved, by whom, etc)
    • Link to 2009 fact sheet for the listing. See here for fact sheets.
  • Salinas River (lower, estuary to near Gonzales Rd crossing)Fact Sheet
    • Fecal Coliform, TMDL in Progress, Report
    • Nitrate
    • Chloride
    • Chlorpyrifos
    • Diazinon
    • Electrical Conductivity
    • Enterococcus
    • E. Coli
    • Sodium
    • Total Dissolved Solids
    • Turbidity
    • Unknown Toxicity
    • pH
  • Watsonville Slough, Fact Sheet
    • Pathogens, USEPA approved TMDL, Project Report [1]
    • Pesticides, TMDL in Progress, Preliminary Project Report
    • Ammonia
    • Chlorophyll-a
    • Chlorpyrifos
    • Diazinon
    • Sediment Toxicity )
    • Sedimentation/Siltation
    • Total Coliform
    • Unknown Toxicity
    • pH
  • Tembladero Slough,Fact Sheet ,
    • Fecal Coliform, SWRCB approved
    • Chlorophyll-a, CCRWQCB approved
    • Chlorpyrifos, CCRWQCB approved
    • Diazinon, CCRWQCB approved
    • Escherichia coli (E. Coli), CCRWQCB approved
    • Nitrate, CCRWQCB approved
    • Sediment Toxicity, CCRWQCB approved
    • Total Coliform, CCRWQCB approved
    • Turbidity, CCRWQCB approved
    • Unknown Toxicity, CCRWQCB approved
    • pH, CCRWQCB approved
    • Nutrients, CCRWQCB approved
    • Pesticides, CCRWQCB approved
  • Lower Salinas River and Elkhorn Slough, Pesticides and Priority Organics, TMDL in Progress, Project Summary
  • Corralitos Creek, Pathogen, TMDL in Progress, Public Hearing Proposed Basin Plan Amendment for Corralitos and Salsipuedes Creek
  • Gabilan Creek, Fact Sheet [2]
    • Fecal Coliform
    • Nitrate
    • Boron
    • Chlorophyll-a
    • Dieldrin
    • Electrical Conductivity
    • Endrin
    • Escherichia coli (E. Coli)
    • Low Dissolved Oxygen
    • Nitrogen, ammonia (Total Ammonia)
    • Salinity
  • <need about 20 of these>
  • You can use automatically end-noted references like this [3]

TMDL development and implementation

The federal EPA provides protocols for TMDL development in general at [1] ,specifically for pathogens at [2] that outline the following components of a TMDL:

  • Identify waters requiring TMDL's
  • Priority ranking and targeting
  • Develop TMDL's
    • <Need to list the actual components of a TMDL here, like the Problem Statement etc...>
  • Implement control action
  • Assess control actions
  • Build partnerships and involve the public
  • Oversee consistent national performance
  • Promote and support innovation

Approaches to TMDL development and implementation in the Monterey Bay area

Approaches to each of the above components vary throughout the nation. Approaches that have been used in the Monterey Region are summarized as follows:

Regionally approved TMDLs considered

  • Bullet list of links to TMDLS close to Monterey Bay that have at-least regional approval
  • ...
  • ...

Problem Identification

  • Bullet list of approaches used in problem identification, with reference to above list of TMDLs
  • ...

...next component (see list of all components above) ...

...

...next component (see list of all components above) ...

...

...next component (see list of all components above) ...

...

...last component = implemenatation

References

  1. Central Coast Regional Water Quality Control Board
  2. CCRWQCB
  3. this is an example refernce

Links