Prevention of Volatile Organic Compound Releases From KyTC Bridge Painting Operations

OBJECTIVES: 1. Review the two methods of solvent recovery and determine which is more practical for use in bridge painting operations. 2. Identify solvents used in KYTC-qualified coatings. 3. Interface with manufacturers of that equipment and obtain specifications, costs and other relevant information (e.g. VOC recovery efficiencies for specific solvents). It may be possible for contractors to lease the necessary equipment. It also may be possible to obtain the use of the equipment as a turnkey service (including recycling/disposal of the captured solvent). 4. Work through KYTC to obtain guidance for this effort from Environmental and Public Protection Cabinet (EPPC) Division of Air Quality Division for Air Quality officials. 5. Prepare suggested special notes for experimental projects using solvent recovery in conjunction with paint application operations. 6. Present the study [mdings in a [mal report for KYTC officials to use in deciding whether to use solvent (VOC) capture on a future experimental project. BACKGROUND: The KYTC conducts bridge painting projects that entail the generation and release of volatile organic compounds (VOCs) into the atmosphere. By capturing those VOCs, released from coatings spray-out during bridge painting operations, KYTC could reduce impacts to atmospheric ozone levels. This would assist areas of the state in achieving U.S. Environmental Protection Agency (USEP A) ozone attainment levels and in maintaining compliance in areas where ozone levels are near the ozone non-attainment threshold. FY 2006 ACCOMPLISHMENTS: A study work plan has been prepared and approved the by KYTC Study Advisory Committee. Sources of VOC/solvent capture technology have been contacted about the feasibility of developing field systems for use on bridges during painting. FY 2007 PROPOSED WORK: Solvent use/releases on KYTC bridges will be estimated. Solvent types used in KYTC coatings will be identified. Technologies for solvent capture will be determined. Resource agency guidance will be sought on the use of solvent capture technologies. Suggested special noted will be prepared for experimental projects demonstrating this technology. Study findings will be reported. PROJECTED COST THROUGH FY 2006: PROGRAMMED COST FY 2007: TOTAL ESTIMATED COST: NOTE: Initial phase of this project was start-up funding from 05-292 April 2006. $15,000 $25,000 $32,000