At a time when there had been a lull in occupancy at this Manhasset, NY building, the property owner received a letter from the Nassau County Department of Health (NCDH). They were proposing that, through implementation of a water conservation plan, the sanitary sewage discharge limit was to be reduced to 4,700 gallons per day (GPD).
However, NCDH’s proposed number was not indicative of full occupancy for the 220,000-square-foot, four-story office building, which had originally received approval from NCDH to design a 28,000 GPD on-site sanitary system. That system, which was currently in place, was designed to accommodate a fully occupied building of 2,071 people. With NCDH proposing significant changes, H2M conducted a water usage analysis of the building.
Through the analysis, H2M reviewed the relation between building occupancy data and water usage from 1999 through 2007, also reviewing the water usage date for the property’s irrigation meter. H2M was then able to determine the water usage of the building at full occupancy with current plumbing fixtures. This led to a request for a proposed discharge limit of 14,414 GPD from NCDH, which was approved, avoiding the major cost of replacing the current on-site sanitary system.