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k I o t z 4,41 associates <br />moderately large storm events which exceed the City's standard design frequency for storm <br />sewers. Swales, in effect, enhance local drainage system capabilities. Relief swale projects will <br />require only limited coordination with the Harris County Flood Control District for <br />implementation. Twelve relief swales, sometimes constructed in conjunction with sewer system <br />outfall improvements, are recommended, as follows: <br />Recommended Relief Swale Projects <br />Project <br />Subdivision/ Area <br />Type of Improvement <br />Project <br />COST/BENEFIT: � <br />ID <br />Benefiting <br />Construction <br />Construction Cost <br />Cost <br />Per Loss <br />Removed' <br />1 <br />IPinegrove Valley <br />Relief Swale <br />$6 000 <br />$140 <br />` <br />Brookglen <br />(Relief Swales & Outfall Pipe Upgrade <br />$95,000 <br />$350 <br />3 <br />(Fairmont Park West <br />IRelief Swales & Outfall Pipe Upgrade <br />$57,000 <br />$370 <br />4 <br />;Glen Meadow <br />'Relief Swales & Outfall Pipe Upgrade <br />$305000 <br />$540 <br />5 <br />'Meadow Park <br />IRelief Swales & Outfall Pipe Upgrade <br />$13,000 <br />$540 <br />_ <br />6 <br />Fairmont Park <br />Relief Swales & Outfall Pipe Upgrade <br />$19,000 <br />_ <br />$560 <br />7 <br />Creekmont Section 1 <br />!Relief Swale & Outfall Pipe Upgrade <br />$34 000 <br />$610 <br />f 8 <br />Fairmont Park East <br />Relief Swales & Outfall Pipe Upgrade <br />$65,000 <br />$860 <br />9 <br />1Spencer HighwayRelief Swale <br />$30,000 <br />$1,360 <br />10 <br />Villa Del Rancho <br />lRehef Swale <br />$24 000 <br />11 <br />Battleground EstatesRelief <br />_.____ <br />Swale <br />$35,,000 <br />$17,500 <br />4 <br />12 <br />. Old La Porte <br />Relief Swale & Outfall Pipe Upgrade <br />$336,000 <br />$21,000 <br />Total 12 Projects <br />$744,000 <br />...._ ... _ .._. <br />t Total construction <br />_ _.. ..... __ _,__ <br />cost divided by the number of structures that have been reported in the <br />_ mw� <br />past to have flooded <br />and for which <br />the recommended project will alleviate flooding in the future. <br />Construction costs for the above recommended relief swales projects include right-of-way costs <br />assuming right-of-way can be placed on existing open land or the property line between adjacent <br />residential lots. These projects should be given high priority for construction. <br />Additional details abouts -.o- <br />shown in Figures ES-1 to ES-6 (these table and figures as -. at the end of this summary). <br />ES-2 <br />Klotz Associates Project No, 0127.008,000 La Porte Citywide Drainage Study <br />January 2009 City of la Porn <br />