Memphis/Shelby County, Tennessee

MEMPHIS/SHELBY COUNTY, TENNESSEE

Effective Redesignation Date: 2/16/95 (60 FR 3352, 1/17/95)

Maintenance Plan - Key Features

• 1990 base year, emissions budget through 2004
• air quality monitoring network will continue to operate in accordance with 40 CFR part 58 with no reductions to the existing monitoring network
• any relocations of monitors will be agreed upon by the EPA prior to their relocation
• existing stationary source control will continue
• additional companies subject to RACT regulations will be added to the source listing and will be required to comply with emission standards
• sources wishing to locate in Shelby County will continue to undergo new source review requirements to include the installation of best available control technology
• a triennial emission inventory will be performed to include area, mobile, and point sources of VOC and NO_x and will be developed in conjunction with emission inventories for CO beginning in 1993
• if the triennial inventory exceeds the projected inventory by more than 10 percent, the inventory development will be increased to an annual event
• I/M of the automobile will continue in the City of Memphis, emphasizing enforcement to assure vehicle owner participation

Contingency Plan Trigger

• violation of the ozone NAAQS

Contingency Measures

• RACT level control for VOC sources not previously controlled
• development of requirements to lower emissions of NO_x from stationary fuel burning sources

Schedule

• immediate implementation upon confirmation of an ozone violation
• measures for RACT will be implemented within 90 days of violation verification to the EPA
• NO_x regulations will be implemented within 2 years of the violation

For further information: Karen Borel
U.S. EPA, Region IV
Air Planning Branch
61 Forsyth Street, SW
Atlanta, Georgia 30303
Telephone: (404) 562-9029; Email: borel.karen@epamail.epa.gov

A violation has occurred in: Memphis, Tennessee

Violation occurred in July 1995 with 4 exceedances of the ozone NAAQS.

Actions - Information as of 10/18/95

• State of Tennessee responded immediately with letter dated August 8, 1995, acknowledging violation and intention to implement contingency plan of the maintenance plan.
• Agree to update VOC regulations to include any CTGs not currently in its rules, including Shelby County, in the Applicability section of each; will file for local adoption.
• Agree to review of NO_x controls, primarily those on large fuel burning sources; 2 year process is allowed for in contingency plan.
• Region IV has held conference call with State officials and feels comfortable with the approach Tennessee has taken, i.e., implementing the Memphis contingency plan as outlined in the approved redesignation.

Actions - Information as of 9/20/96

• Memphis is currently working with the State of Tennessee to update its regulations on VOC control to include any CTGs not currently in the rules.
• Reviewing NO_x control strategies on large fuel burning sources, primarily through negotiation with the TVA Allen Fossil Plan (Memphis' largest NO_x contributor).