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<br />SECTION 1 <br />INTRODUCTION <br /> <br />1.1 Purpose and Scope <br /> <br />Klotz Associates, Inc. was contracted by the City of La Porte (City) to investigate <br />alternatives to improve a storm sewer system in Fairmont Park East subdivision and <br />recommend alternatives that will help reduce street ponding for storm events that occur <br />more frequently than the 100-year event. Fairmont Park East Sections Two through Four <br />are located between Spencer Road and Harris County Flood Control District (HCFCD) <br />Unit B 106-02-00. Fairmont Park East Section One is located south of HCFCD Unit <br />BI06-02-00 and Fairmont Parkway, (See Exhibit 1). The storm sewer serving Sections <br />Two through Four has a main trunk line that runs north to south adjacent to Fleetwood <br />Drive along the east side of the roadway. The alternatives for improvement are intended <br />to provide for a five-year design storm or level of protection. <br /> <br />The City has received several complaints from residents of Fairmont Park East of street <br />ponding on residential side streets that intersect with Fleetwood Drive during normal <br />rainfall events. These residential side streets are intended to drain toward the midpoint of <br />the street where curb inlets are located in vertical sags. The ponding occurs in the middle <br />of the street and encroaches into yards and homes for storms more frequent than the 100- <br />year event. Fairmont Park East is not located within the 100-year floodplain. The City <br />has provided photographs in support of these complaints. <br /> <br />As part of this contract, the City requested Klotz Associates analyze the local hydraulic <br />conditions at the confluence of HCFCD Unit B 112-02-00 and Willow Springs Gully <br />(B112-00-00) for alternatives to reduce water surface elevations upstream of the <br />confluence in tributary B112-02-00. BI12-02-00 is a concrete lined trapezoidal channel <br />that flows from east to west where it merges with BI12-00-00, (See Exhibit 6). Flooding <br /> <br />1-1 <br /> <br />Klotz Associates Project No. 0127.009.000 <br />May 2009. <br />Fairmont Park East & Brookglen Drainage Study <br />City of La Porte <br />