pf_02856 - Laserfiche WebLink

Home

Air Emission Pennit No. 12300387-9 Page 3 of 22 OVERVIEW 1. Duty to Comply The Permittee shall comply with the conditions contained in this permit in order to attain, maintain and demonstrate compliance with applicable Minnesota and federal statutes, federal regulations and Minnesota rules. The emission units and pollution control equipment authorized in this permit are as described by the permit application unless specifically noted in this permit. 2. Overview and Description of Changes Authorized by This Permit The Permittee owns and operates a circuit boards manufacturer at 1633 Terrace Drive, Roseville, Ramsey County, Minnesota. The stationary source consists of one clean/develop process, two polymer coaters each with its own electric dryer, one sodium bicarbonate developing process, 12 etch and 12 strip modules, one oxide tank, two groups of drills, one sensitizing process, one copper plating process, one alkaline etching process, one soldermasklbaking process, one solderflux process, one gold plating process, one nomenclature printing process, one group of routing equipment, a wastewater treatment process and a testing laboratory. The Permittee proposes to add a new electroless copper plating line, which consists of series of solution baths as follows: solvent swell, de smear, neutralize, clean/condition, micro etch, pre- dip, activate, accelerate, electroless copper plate, neutralize and anti-tarnish. The emissions of these units will be routed to a packed bed scrubber prior to exhausting to the ambient. The modification authorized by this permit requires a moderate permit amendment as specified in Minn. R. 7007.1450. Following is a summary of the changes in hourly emission rates, in pounds per hour at a maximum source capacity calculated as specified in Minn. R. 7007.1200, for the emission units described in this permit: Criteria Pollutants I ~~~o I ~:~ Hazardous Air Pollutants I Fonnaldehyde 10.26 Methanol 0.01 3. Permit Shield CO 0.00 VOCs 16.44 Lead 0.00 Hydrochloric acid Mn compounds 0.01 1.22 Permit shield is not applicable to the permits issued under the moderate amendment permitting process.