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Regulations and Plans Under Development



The Division of Air Quality is committed to openness and transparency as it updates and amends state Air Quality Regulations and related state implementation plans. This page provides information on items under development.

Motor Vehicle Emissions Inspections Program

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Marvina Cephas
Division of Air Quality
302-739-9402

Public Workshops Proposed Draft Amendments Fact Sheet

The DNREC Division of Air Quality is amending 7 DE Admin. Code 1126 (Motor Vehicle Emissions Inspection Program) and 7 DE Admin. Code 1131 (Low Enhanced Inspection and Maintenance Program).

The State of Delaware currently exceeds Nation Ambient Air Quality Standards (NAAQS) for Ozone. Ozone is formed by photochemical reactions between hydrocarbons (HC) and nitrogen oxides (NOx) in the atmosphere. Delaware Motor Vehicle Emission Inspection and Maintenance (I/M) Program inspects vehicles and requires repair of high emitters, to reduce HC and NOx emissions. Delaware operates two I/M programs in Kent/New Castle Counties, and a Basic I/M program in Sussex County.

In order to increase the statewide benefit of its I/M programs, DNREC proposes that the Basic I/M program in Sussex County be upgraded to the program in Kent and New Castle Counties. The proposed amendments to the Motor Vehicle Emissions I/M Programs include:

  • A model year exemption that expands each program from five to seven years to align with Delaware Code;
  • An increase for vehicles that weigh 8,501 up to 14,000 pounds gross vehicle weight beginning with model year 2008 for the On-Board Diagnostic (OBD) test in all counties;
  •  A change to the older vehicle testing requirements to include curb idle and gas cap tests for vehicles 1995 and older;
  • A phased-in schedule for the increase in the cost of repairs to obtain an emission waiver in Sussex County; and
  • Language to prevent vehicle tampering in all counties.

This regulatory amendment process started with DNREC Start Action Notices 2018-04 (Regulation 1126) and 2018-05 (Regulation 1131).

Related News Release: DNREC To Update Vehicle Emission Testing Requirements (5/13/22)

Amendments to the Control of Volatile Organic Compound Emissions (Solvent Cleaning)

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Renae Held
Division of Air Quality
302-739-9402

Public Hearing: Dec. 2, 2020 Public Workshops Draft Amendments

The Division of Air Quality is amending Section 33.0 (Solvent Cleaning and Drying) of the Control of Volatile Organic Compound Emissions Regulations (7 DE Admin. Code 1124 and Appendices).

Solvent cleaning is the process of using solvents to remove contaminants from various plastic, metal or other substrates (surfaces). The following businesses may use solvent cleaning and drying in their operations: vehicle sales and servicing locations; machine shops; and manufacturers and servicers of electronic, pharmaceutical, aerospace, and other mobile equipment.

The objective of these amendments is to adopt certain provisions from the Ozone Transport Commission 2012 model rule for solvent degreasing. These amendments will reduce emissions of volatile organic compounds from solvent cleaning operations.

This regulatory amendment process started with DNREC Start Action Notice 2019-05.

Note: The final regulation titled Control of Volatile Organic Compound Emissions, Section 33- Solvent Cleaning and Drying, has been published in the Aug. 1, 2021 Delaware Register of Regulations, and was effective Aug. 11, 2021.

DNREC has prepared an example placard (Batch Cold Cleaning Machine Workplace Practices) that facilities can post.




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