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J��tEO STgr� syo UNITED STATES ENVIRONMENTAL PROTECTION AGENCY W REGION 5 zy�Ki r` 77 WEST JACKSON BOULEVARD X47,PR00C"QO CHICAGO, IL 60604-3590 REPLY TO THE ATTENTION OF MAILCODE WU-16J March 30, 2008 1- CERTIFIED MAIL 7001 0320 0006 01815323C ` E© RETURN RECEIPT REQUESTED JuN � 6 2p08 Joe Dotty //•-- Dotty Auto Company vier --•!� - 30389 State Highway 371 Pequot Lakes, Minnesota 56472 Re: Requirement to Prevent Underground Drainage from a Motor Vehicle Service Area at Dotty Auto Company; U.S. EPA Number: MN-035-5X28-0030 Dear Mr. Dotty: On May 23, 2008, our inspector, Marty McCleery,met with Bruce Cash of your staff. He also gave him a"no parts washing" sign, which should be placed at your shop sink. Please notify me when the sign is posted. The rest of this letter will discuss the need to prevent any spills in the vehicle service area from entering the floor drain. Based on the information that we have, the facility's floor drain is in the vehicle wash area, adjacent to the service area. To comply with Safe Drinking Water Act regulations,you must demonstrate that Dotty Auto Co. has procedures in place to prevent any spill in the service area from migrating into the wash area and into the floor drain. One satisfactory solution would be to install a small berm or barrier. This would keep any spills in the service area out of the wash area and still allow you to use the floor drain for vehicle washing only. We understand that parts of the floor at the facility are either sloped or slanted. In the event of a significant spill, gravity alone may not provide a sufficient barrier of protection for you, particularly if there is a major spill in the service area that would migrate toward the open floor drain. We believe the installation of a berm is the best method available to ensure that vehicle fluids remain out of your wash area and floor drain. However, if you do have another alternative suggestion,please provide it in writing within 30 days of your receipt of this letter and our technical review team will consider it.