Laserfiche WebLink
SECTION 3 <br />FAIRMONT PARK EAST <br />COST ESTIMATE & CONCLUSION <br />3.1 Alternative 1 <br />Alternative 1 is the addition of a parallel storm sewer trunk line under the northbound <br />travel lane of Fleetwood Drive and tied into the existing 60-inch RCP under the pavement <br />of Fleetwood Drive and Mesquite. A junction box will be needed for joining the existing <br />pipe with the proposed, The 60-inch CMP outfall is replaced with an 8'x 6' concrete <br />reinforced box (RCB) with headwall and wing walls. The limits of the parallel trunk line <br />are from the outfall to North Sycamore and include connection of the 24-inch pipe <br />between North of N. Sycamore to the new trunk. <br />This configuration has a design capacity of 218 cfs for a 5-year event at the outfall and <br />keeps the HGL below Fleetwood Drive until North Spruce where approximately 6-inches <br />of ponding may result. <br />The associated construction estimate in today's dollars is approximately $1.00 million <br />including 10% for contingencies. Include 12% for engineering and surveying for $1.07 <br />million. <br />3.2 Alternative 2 <br />Alternative 2 is the replacement of the existing storm sewer trunk line between the outfall <br />channel and North Sycamore along the current storm sewer alignment. This option is <br />chosen as an alternative for the reduction in costs associated with pavement repair and <br />replacement that should offset the cost of pipe removal, traffic control and extended <br />construction time. The 60-inch CMP outfall is replaced with an 8'x 6' concrete <br />3-1 <br />Klotz Associates Project No. 0127.009.000 Fairmont Park East & Brookglen Drainage Study <br />May 2009 City of La Porte <br />