Laserfiche WebLink
<br />Regional Cost Estimates <br /> <br />Expanding the conveyance and treatment facilities enough to eliminate the risk of an <br />overflow is not practical or feasible. The primary limitation is the need to double the capacity <br />of the Metro Plant where peak flow rates could reach over 1.3 billion gallons per day, To <br />understand the relative cost of conveying and treating excessive 1/1, capital costs were <br />estimated based on assuming a 25-year storm event occurred with the forecasted <br />development of 2030. Technically, the interceptor system must not be overloaded for any <br />rainfall condition so using a 25-year event is for comparative purposes only, Capital cost for <br />treatment plant capacity was also estimated. The cost of increasing the hydraulic capacity of <br />each plant was not estimated because of the limitations of space at each site. <br /> <br />Total capital costs based on the 25-year III event, for MCES conveyance and treatment <br />facilities needed for ultimate development, would approach a half billion in 2002 dollars, If <br />sized for the ultimate service area, the cost of these facilities would be even greater. The high <br />cost of expansion to convey III on ly provides a measure of how important III reduction is as <br />it is not feasible to construct facilities large enough to prevent an SSO. <br /> <br />7 <br />