Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Air Quality Implementation Plans

Texas SIP: 30 TAC 115.950: Use of Emissions Credits for Compliance

Regulatory Text: 
Texas Chapter 115 - Control of Air Pollution from Volatile Organic Compounds

SUBCHAPTER J:  ADMINISTRATIVE PROVISIONS

DIVISION 4:  EMISSIONS TRADING,

Outline:
§115.950.  Use of Emissions Credits for Compliance. 5-68, TXd81


§115.950.  Use of Emissions Credits for Compliance.
As adopted by TCEQ December 6, 2000 effective January 18, 2001 (5-68).
Approved by EPA September 6, 2006 (71 FR 52698) effective October 6, 2006 (TXd81).

     (a)  An owner or operator may meet the emission control requirements of this chapter, in whole or in part, by obtaining emission reduction credits (ERCs), mobile emission reduction credits (MERCs), discrete emission reduction credits (DERCs), or mobile discrete emission reduction credits (MDERCs) in accordance with this section and Chapter 101, Subchapter H, Division 1 of this title (relating to Emission Credit Banking and Trading) or Chapter 101, Subchapter H, Division 4 of this title (relating to Discrete Emission Reduction Banking and Trading).  For the purposes of this section, the term "RC" refers to an ERC, MERC, DERC, or MDERC, whichever is applicable.

     (b)  Any lower volatile organic compound (VOC) emission specification established under this chapter for the unit or units using RCs shall require the user of the RCs to obtain additional RCs in accordance with Chapter 101, Subchapter H, Division 1 of this title or Chapter 101, Subchapter H, Division 4 of this title and/or otherwise reduce emissions prior to the effective date of such rule change.  The owner or operator of the unit(s) currently using RCs shall calculate the necessary emission reductions per unit as follows.

Figure 30 TAC 115.950(b):

                                 d
delta E = [LA x (ERold - ERnew) x -----]
                                2000

Where:

delta E = the differential of emissions 

LA = the maximum level of activity 

ERold = the existing VOC emission rate for the affected unit in lb per unit of activity

ERnew = the new VOC emission rate for the affected unit in lb per unit of activity

d = (i)  to calculate annual emission reductions, d = 365

    (ii)  to calculate emission reductions for the remainder of a control period, d = the number of days remaining in the control period

Air Quality Implementation Plans

  • About Air Quality Implementation Plans
  • Approved Air Quality Implementation Plans
  • Develop an Air Quality SIP
  • Find a Regional Contact for Air Quality SIPs/FIPS/TIPs
  • Tools for SIP Status
Contact Us about Air Quality Implementation Plans
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on February 10, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.