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Mr. Ron Bottoms <br />March 10, 2008 <br />Page 13 of 15 <br />Fairmont East Subdivision <br />kIotzIF) assoCiates <br />Fairmont East Subdivision is located off of Fairmont Parkway and drainages into <br />HCFCD B106-02-00. Exhibit 14 shows the repetitive losses and the home flooded by <br />Tropical Storm Allison and Erin. The problems for this subdivision appear to be not <br />enough inlets, inadequate storm sewer system and no emergency overflow path. The <br />houses are about I to 2 foot higher than the road elevation. <br />Fairmont West Subdivision <br />Fairmont West Subdivision is located off of Fairmont Parkway and drainages into Big <br />Island Slough (HCFCD B 106-00-00). Exhibit 15 shows the repetitive losses and the <br />home flooded by Tropical Storm Allison and Erin. This subdivision is also in need of a <br />overflow path to let the water out of the subdivision during high flow conditions. <br />Observations on City Drainage Design Procedures <br />The City does have a formal drainage criteria manual to guide design of drainage <br />facilities. At current time, the City Engineer, with the assistance of City staff, evaluates <br />proposed land development and drainage facilities for such development on a case -by - <br />case basis. Appendix D shows the entire criteria manual. Recommend updating the <br />drainage criteria manual to address several drainage related issues, such as overland flow <br />evaluations. The update to this manual should begin immediately and should be <br />commented on my staff and other interests. <br />Ownership and Maintenance <br />There are 7 HCFCD in Clear Creek Watershed, 9 HCFCD in Armand Watershed, 16 <br />HCFCD in San Jancinto/Galveston Watershed in the City of La Porte. The ownership of <br />the channels is listed in the following table. Maintenance is just assumed that the owner <br />will maintain it. See the exhibit for the ownership of channels in the Appendix E. <br />Clear Creek Watershed <br />Ownership <br />Maintenance_ <br />A104-00-00 Taylor Bayou) <br />HCFCD <br />HCFCD <br />A104-07-00 (Tributary 3.93 to Taylor Bayou) <br />HCFCD/City <br />HCFCD/City <br />A 104-07-01 <br />City <br />City <br />A104-10-00 (Boggy Gully/Bayou) <br />HCFCD <br />HCFCD <br />A104-10-02 <br />HCFCD <br />HCFCD <br />A104-12-00 <br />HCFCD <br />HCFCD <br />A104-12-01 <br />HCFCD <br />_ <br />HCFCD <br />Armand Bayou Watershed <br />B106-00-00 (Big Island Slough) <br />HCFCD <br />HCFCD <br />