The number of people per household was updated from 3.78 in the 2012 calibrated model to 3.41 based on 2018 data from the Kem C. Gardner Institute of the University of Utah. Future residential flows for the different land use areas were calculated based on the planned future ERUs per acre, the corresponding acreage of the undeveloped land, and 3.41 people per ERU. The future contribution per capita is based on the established LOS as defined in Section 5.3 of 100 gpcd with a peaking factor of 2.5. Maintaining consistency in LOS between the existing system and future service provides the City a reliable pattern for that LOS and integrity in the development of an Impact Fee Facility Plan (IFFP).
The future ERUs per acre were calculated based on the high dwelling units per acre that were established by the City, the number of people per household for different residential densities, and 3.41 people per ERU as shown in Table 5-3. Following the calculation of the future residential flows based on land use, the future flows were assigned to the nearest future sewer manholes within the model. This method of flow distribution provides accurate, site specific future wastewater loading estimates.
Land Use | Low Dwelling Units per Acre (du/ac) | High Dwelling Units per Acre (du/ac) | People per House (pph) | Gallons per Capita per Day (gpcd) | Residential Future Sewer Use per Parcel (gpd) | Commercial Sewer Use (gpd/ac) | Residential Sewer use for Future Development (gpd/ac) | Future ERUs Per Acre
1 |
Land Use | Low Dwelling Units per Acre (du/ac) | High Dwelling Units per Acre (du/ac) | People per House (pph) | Gallons per Capita per Day (gpcd) | Residential Future Sewer Use per Parcel (gpd) | Commercial Sewer Use (gpd/ac) | Residential Sewer use for Future Development (gpd/ac) | Future ERUs Per Acre
1 |
Very Low Density Residential | 1 | 2 | 3.41 | 100 | 341 | 682 | 2.00 | |
Low Density Residential | 2 | 3.5 | 3.41 | 100 | 341 | 1,194 | 3.50 | |
Medium Density Residential | 4.51 | 7.6 | 3.41 | 100 | 341 | 2,592 | 7.60 | |
High Density Residential | 9 | 14.1 | 2.64 | 100 | 264 | 3,722 | 10.92 | |
Very High Density Residential | 12 | 24 | 2.64 | 100 | 264 | 6,336 | 18.58 | |
Mixed Use | 0 | 25 | 2.64 | 100 | 264 | 2,450 | 6,600 | 19.35 |
Town Center | 14 | 30 | 2.25 | 100 | 225 | 1,225 | 6,750 | 19.79 |
Neighborhood Commercial | 850 | 2.49 | ||||||
Community Commercial | 850 | 2.49 | ||||||
Regional Commercial | 850 | 2.49 | ||||||
Professional Office
2 | 850 | 2.49 | ||||||
Light Industrial | 1,230 | 3.61 | ||||||
Public Facilities
2 | 1,260 | 3.70 | ||||||
Agricultural Open Space
2 | 0 | 0.00 | ||||||
Future Park
2 | 0 | 0.00 | ||||||
Research Park
2 | 1230 | 3.61 | ||||||
Parks and Open Land
2 | 0 | 0.00 | ||||||
Transit Oriented Development
2 | 12 | 24 | 2.64 | 100 | 251 | 6,017 | 18.58 | |
This table correlates with Table 2.4 of the 2012 Master Plan Report 1 - Based on "High Dwelling Units per Acre" and 3.41 people per ERU 2 - Land uses not included in the 2012 Master Plan Report | ||||||||