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Environmental Quality City Letter Head
Ways to Comply with the Clean Air Act

For each bucket, use one of the two following control requirements:

  1. Cover the solvent with a 2.5 cm (1 inch) layer of water; then cover the bucket with a lid (some vendors sell carburetor cleaners in containers with a layer of water already included); OR

  2. Ensure that there is a layer of air (freeboard) between the surface of the solvent and the rim of the bucket. This freeboard must be at least 75% of the distance across the narrowest gap of the opening (or 75% of the diameter of a round bucket). To calculate the freeboard, measure the smallest diameter of the opening and multiply by .75. For a 5-gallon bucket with a 12-inch diameter opening, you should maintain a 9-inch freeboard. Then cover the bucket with a lid.

If you choose to use this second control option, you must engage in the following work practices

  • Store solvent waste in closed containers.
  • Flush parts in the freeboard area.
  • Reduce the pooling of solvent on and in parts.
  • Do not fill the cleaning bucket above the fill line.
  • Clean up spills immediately.
  • Store rags used to wipe off solvent in closed containers.
  • Do not agitate solvent to the point of causing splashing.
  • When the cover is open, room drafts must be less than 50 feet per minute.
  • Do not clean absorbent materials.

    (If you choose Control 1, you are exempt from the above work practices.)

    Report your control or work practices to the LLCHD, ATTN: Jim Fobben, 3140 "N" Street, Lincoln, NE 68510 or fax (402) 441-8323. Although the deadline was Aug. 29, 1995, the LLCHD encourages you to still report if you have not; there will be no penalties for late notification until December 2, 1997.

    Note: (This will be a one time only reporting obligation unless you install additional buckets.)

    You can avoid this regulatory burden by using alternative solvents. The LLCHD can recommend alternatives and can provide you with a list of vendors if you call (402) 441-8040 and ask about these options.

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