Sun Valley Water & Wastewater Project
Final Design Capital & Maintenance Costs
To determine the cost of the water and wastewater systems, the initial startup costs were determined and then the annual/periodic costs were determined. These were combined to determine a total lifetime cost for each of the systems. Table 9 provides the upfront costs associated with all of the four systems along with the capacities for each tank, quantities of each item, prices per item, and references for the cost estimates.
Table 9: Capital Costs for Both Water & Wastewater System on the Sun Valley Ranch Site
The additional operation and maintenance and other lifecycle costs can be found in Table 10. The tranportation costs can be seen by clicking on the following link: transportation costs. The cost of handling both the composting toilets, graywater, and kitchen sink and urine systems were all included under the composting toilets operation and maintenance section. The total lifecycle costs that include the capital and annual costs for one year will be $16,998.
Table 10: Lifecycle Costs of Both Water & Wastewater System on the Sun Valley Ranch Site
Summary of Project Costs
Table 11 provides the cost for the engineering services that the team has dedicated to the project. This includes the hours that each person has spent as well as travel expenses. This can be compared to the original project cost analysis that was provided in the proposal. As you can see, the team overestimated the amount of hours that would be required for the project. Therefore, the engineering services would be significantly less what they had originally anticipated.
The original Gantt chart was followed and no major adjustments were made, however the team did attempt to complete the details for the wastewater system earlier than what was specified on the Gantt chart. The team specifically designated several weeks to both the water and wastewater system designs, and they ended up utilizing the full time they designated in the Gantt chart.
Table 11: The Costs for the Engineerings Services
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