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443 Lafayette Road N. (651)284-5005 St. Paul, Minnesota 55155 MINNESOTADEPARTMENT l` lei CN9)INDUSTRY vvvvw.dli.mn.gov r F LABOR 84 a7 1 TTY: 1(651D 297-4198 - 1 81 eta, August 5, 2011 /18800 11, Associated Mechanical Contractors inc. C, 7 1257 Marschall Road Shakopee,MN 55379 Gentlemen/Ladies: Subject: REQUEST FOR ADDITIONAL INFORMATION regarding plumbing at Orono Senior Housing, Highway 12 & Luce Line Trail,Orono, Hennepin County,Minnesota,Plan No. PLB 1106-00212 We are NOT able to grant approval at this time of the plans and specifications submitted for the above- designated project. The following comments}outline the changes and/or additional information that must be submitted so that we can further evaluate the plans and specifications for compliance with the standards of this department: 1. Sheet C4.1 appears to indicate utility easement lines around the watermain, forcemain sewer, and lift station within the property lines. Please indicate whether these utilities are located within a permanent easement where all utilities within the easement are permanently owned and maintained by the city of Orono. If so,please provide documentation from the city of Orono stating this is correct. If the utilities within the easement lines will not be permanently owned and maintained by the city,they are subject to the Minnesota Plumbing Code. The following information is then required: a. The plans indicate polyethylene pipe for the watermain and the forcemain sewer, but do not indicate the construction standard of the pipe. The plan must be revised to include the pipe construction standards, joining method,and the installation standard to be used for directional boring. b. If the pipe materials are not listed as approved materials in the Minnesota Plumbing Code for the intended purpose,alternate material approval must be obtained from the city of Orono before the plans will be approved by this office. The project owner must make a written request to the city for the alternate materials and installation method. The pipe construction standards and installation standard must be clearly identified in the request. The owner must acknowledge that the materials and installation method are not approved in the Minnesota Plumbing Code. c. If the city of Orono approves the alternate materials and installation method,a copy of the local approval must be submitted to this office. 2. Using Minnesota Rules,part 4715.2310: a. The 4-inch building drain branch must be at least 5 inches in size at the branch connection serving the bathroom in Room No. 140 on Sheet P 1. b. The 4-inch building drain branch must be at least 5 inches in size at the branch connection serving the bathroom in Room No. 137 on Sheet PI. c. The 6-inch building drain branch must be at least 8 inches in size at the branch connection serving the bathroom in Room No. 157 on Sheet P2. d. The 3-inch drain branch in Room No. 139 on Sheet P1 may not serve more than two water closets. Please revise the plans to show the necessary changes. This information can be provided to you in alternative formats(Braille,large print or audio). An Equal Opportunity Employer