Bureau of Water

Program OverviewLocal Government

Interest

Legislative Updates

TMDL regulation - 2005 Congaree National Park water

reclass Shellfish regulation update WQ Standards – triennial review Isolated Wetlands bill

Wastewater(NPDES) permits Whole Effluent Toxicity (WET)

Old WET Law (’04) New WET Law (’05) Implementation

EPA issued permits with State WET protocol

State Revolving Fund Federal allotment cuts

CW: $ 13.5M, $ 11.0M, $ 9.3M DW: Steady at $8.3M

StormwaterGeneral Permits

Industrial Construction MS4

Water Quality Monitoring Updated monitoring strategy

305(b)/303(d) integrated report (4/06)

Water quality standards State-adopted EPA-approved Apply to waterbodies, not pollution

sources Prescribe uses of waterbodies Establish water quality criteria to protect Include antidegradation policy

Examples of Uses and Criteria

Use: swimming Criteria: fecal coliform bacteria not

to exceed 200 per 100 ml of water Use: trout

Criteria: temperature not to vary from natural conditions

Water quality standards

Data Types Water chemistry and fecal coliform

bacteria Most recent 5 years of data

Biological Most recent data

Shellfish consumption Most recent classifications

Fish consumption Most recent advisories

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SCDHEC Fixed Ambient SurfaceWater Monitoring Sites

Major Basin Boundaries

Types of Monitoring Sites#S Integrator Sites#S Special Purpose Sites#S Summer Only Sites#S Sediment Only Sites#S Basin Sites

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SCDHEC MacroinvertebrateMonitoring Sites

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Rotating Basin Boundaries#S Macroinvertebrate Sites

Section 303(d) Federal Clean Water Act (1972)

Requires states to submit list of sites not meeting state water quality standards to EPA every two years

Requires states to develop a Total Maximum Daily Load (“TMDL”) for each pollutant causing impairment

If states don’t develop list or TMDLs, EPA must do it !

No sites with acute No sites with acute impacts on 303(d) listimpacts on 303(d) list

Acute impacts to water Acute impacts to water quality dealt with quality dealt with immediatelyimmediately

List includesList includes persistent persistent impairments identified impairments identified through water quality through water quality monitoringmonitoring

Determining Impairment

In other words…

Listing is based on results of measurements and sampling performed by DHEC or other acceptable sources.

What is a TMDL ?Total Maximum Daily Load Maximum amount of a pollutant

that a waterbody can receive from all sources, and still meet water quality standards

Maximum allowable amounts of point and nonpoint source contributions, plus a margin of safety

Identify suitable approach, based on Pollutant(s) of concern Available data Watershed size, characteristics EPA’s approval

Characterize existing pollutant loads Determine percent reduction

from each source so that instreamwater quality standards are met

TMDL Development Process

TMDL Facts• TMDL process includes public

notice, comment period• All TMDLs must be approved by

EPA• Final TMDL confers no additional

regulatory authority to DHEC• TMDL implementation through

existing regulatory and non-regulatory mechanisms

TMDLs in South Carolina 312 Approved TMDLs

51 TMDLs being implemented 17 primarily point sources 34 primarily nonpoint sources

Check our web site for notices: www.scdhec.gov/water

Know your watersheds!

Become familiar with 303(d) list TMDLs will be developed for

these waters (unless WQ improves!) If a TMDL has already been

developed for your watershed Apply for a grant to implement

voluntary portion If no TMDL has been developed

Develop it in cooperation w/DHEC & EPA

Current Issues Coastal septic tank study 401 for Corps Nationwide

permit FERC relicensing Thermal imaging in shellfish

waters Interstate issues