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MINNESOTA DEPARTMENT OF HEALTH Division of Environmental Health REPORT ON PLANS Plans and specifications on plumbing: Orono Middle School 1993 Remodeling, 685 Old Crystal Bay Road North, Orono, Hennepin County, Minnesota, Plan No. 931975 Submitted by: EOS Corporation, 470 Water Street, Excelsior, Minnesota 55331 Ownership: Independent School District No. 278, c/o Mr. Thomas Mich, Superintendent, 685 Old Crystal Bay Road, Box 46, Long Lake, Minnesota 55356 Date Examined: May 25, 1993 Date Received: May 12, 1993 SCOPE: This examination is limited to the design of this particular project only insofar as the provisions of the Minnesota Plumbing Code, as amended, apply, and does not cover the water supply or sewerage system to which this plumbing system is connected. The examination of plans is based upon the supposition that the data on which the design is based are correct, and that necessary legal authority has been obtained to construct the project. The responsibility for the design of structural features and the efficiency of equipment must be taken by the project designer. Approval is contingent upon satisfactory disposition of any requirements included in this report. INSPECTIONS: Special care should be taken to insure that the material and installation of the plumbing system are in accordance with the provisions of the Minnesota Plumbing Code. It is necessary that the State Health Department make roughing-in and final inspections of the plumbing system to determine whether It complies with the code. Provisions should be made for applying an air test at the time of the roughing-in inspection as outlined in Minn. Rules, p. 4715.2820, of the code. In order to facilitate this work, a self-addressed card is attached which should be returned to this office. The name of the plumbing contractor should be indicated so arrangements can be made for the contractor to notify the State Health Department that the installation will be ready for a test and inspection. No acceptance of the plumbing installation can be given until inspection and testing of the roughing-in work (Minn. Rules, p. 4715.2820, subp. 2), finished plumbing (Minn. Rules, p. 4715.2820, subp. 3), and inspection of the completed installation by a representative of the State Health Department indicates compliance with the provisions of the code. REQUIREMENT(S): 1. A waste branch serving more than two science classroom sinks with 2-inch traps must be sized larger than 2 inches. Science classroom sinks are considered unlisted fixtures and unlisted fixtures with 2-inch traps have a drainage fixture unit value of three. 2. Field verify that the venting system for the science classroom sinks does not tie into the venting system for non-acid waste fixtures. 3. Provide cleanouts on island vents at locations indicated on the enclosed handout. 4. Provide cleanouts at locations that will permit the new waste and vent piping to be air tested. Authorization for construction in accordance with the approved plans may be withdrawn if construction is not undertaken within a period of two years. The fact that the plans have been approved does not necessarily mean that recommendations or requirements for change will not be made at some later time when changed conditions, additional information, or advanced knowledge make improvements necessary. Approved: 41'v�all— Lewis E. Anderson Public Health Engineer Section of Water Supply and Well Management ' 612/627-5120