The Procedures to Implement the Surface Water Quality Standards Mrs Brittany M Lee Standards Implementation Team Phone 2104034048 Email BrittanyLeetceqtexasgov What are the Implementation Procedures IPs ID: 559537
Download Presentation The PPT/PDF document "Revisions to:" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Revisions to:The Procedures to Implement the Surface Water Quality Standards
Mrs. Brittany M. LeeStandards Implementation Team
Phone: 210.403.4048
Email: Brittany.Lee@tceq.texas.govSlide2
What are the Implementation Procedures (IPs)
Procedures to Implement the Texas Surface Water Quality Standards (IPs) RG-194A guidance document that explains how the
TCEQ applies the Texas Surface Water
Quality
Standards Slide3
IP Revision Process
Triennial review process
2010 IPs approved at the June 30, 2010 TCEQ Commissioner’s Agenda
EPA approved most of the 2010 IPs on July 12, 2013
Next water quality standards revision: 2017
Next IPs revision also targeting 2017 completion dateSlide4
Unresolved EPA Objections to the 2010 IPs
DechlorinationVariancesWhole Effluent Toxicity- Reasonable Potential Determination Slide5
Focus of the 2017 Revision
Reasonable Potential for WET Testing
Dechlorination
Variances
Temperature
7Q2 and HM segment flow data
Ambient segment WQ data
316(b) Rule Implementation
Endangered species
MALs
pH screening procedures
Correcting errors/omissions in current IPsSlide6
Dechlorination(possibility)
2010 IP Proposed
Requirements
for renewing, new,
and expanding
domestic discharges
with design
flows between 0.5 and
1.0 MGD
2017 IP Proposal
Phase I and Phase II Approach
Phase I – New and Amended
Phase II - RenewalsSlide7
Variances
Adopting a standard for local conditions requiring EPA approval and opportunity for public hearing.EPA Objection – no compliance date (specific) for meeting final effluent limitations.Slide8
Temperature
Stakeholder meetings began in August of 2014
TCEQ is taking initial comments and working on a detailed procedure to include in the 2017 IP
Draft procedures are proposed to be presented to stakeholders in Summer 2016.Slide9
Critical Conditions7Q2 and Harmonic Mean Flows
Calculated for each classified segmentAnalyzed using 29 years as the period of record where data is available
Data has to be verified and released before it can be used, it is otherwise considered provisional.
Located in Appendix C of the 2010 IPs.
Critical condition reviewers are Jeff Borski and Nancy VignaliSlide10
Ambient Water Quality Data
Located in Appendix D of the 2010 IPsData given for individual segmentsRoutine water quality data is analyzed to derive segment- specific valuesTSS, pH, hardness, TDS, chloride, sulfateSlide11
316(b) Intake StructuresUpdates
Final rule effective October 14, 2014Stakeholder meetings are being held. Most recent meeting April 14, 2016.
TCEQ working on updating TPDES application worksheets to include 316(b) information.
Working with EPA and permittees on rule implementation issues and requirements.
Contacts for 316(b) are Merrit McKelvy, Kara Denny, Brittany Lee (biological requirements)Slide12
Endangered Species
New Listings
Smalleye
shiner
Sharpnose
Shiner
De-listing
Concho water snake
Located in Appendix B of the 2010 IPsSlide13
Minimum Analytical Levels (MALs) and Suggested Analytical Methods
Located in Appendix E of the 2010 IP.
Updates are being done as necessary to the MAL as well as the suggested method if necessary.
Examples of what is being done:
The
MAL for
Toxaphene
is 0.3
ug
/L in Table E-1 and 1.0 in Table E-2. This inconsistency will need to be resolved.
Trichlorfon
is misspelled in Table E-1.Slide14
pH Screening Procedures
Screening procedure established with EPA concurrence for certain direct discharges to classified segmentspH Screening conducted: for major municipal facilities (≥1 MGD flow)
for industrial dischargesSlide15
Summary of Proposed Revisions
DechlorinationVariancesTemperature – cooling waterUpdates to Segment flow data
Update Segment ambient WQ data
316(b) rule implementation
Endangered species
MALs
pH Screening procedures
General updates and
correctionsSlide16
Any Questions????
Feel free to email or call me Brittany.Lee@tceq.texas.gov210-403-4048