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Utility requirementsB.P.D. PLUMBING, Inc. 369 Rogers Avenue, West Springfield, MA 01089 Phone (413) 246-8152 – Fax (413) 455-3589 To: Gaurang Patel Date: 11/28/2013 Subject: Sewer & water pipe sizing, 100 Main street Florence, Ma I reviewed the plot plan of a two story commercial building with five water closets and seven sinks. The total drainage fixture units for this building are 38 and would require a 4” sewer main and a 1” water supply according to the Massachusetts uniform plumbing code.