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CM-08-04-089DATE: April 4, 2008 SUBJECT: City Manager - April 11, 2008 ITEM: Action authorizing the City Manager to sign a letter accepting changes in the 1% annual chance flood water surface elevations and delineation associated with a Letter of Map Revision request in conjunction with the East Chandler Retail Center development. Department: Engineering & Development Services Staff Person: Danny Halden, P.E., City Engineer Justification: The East Chandler Retail Center (University Oaks) development was required to process a Letter of Map Revision (LOMR). This LOMR will affect the 1% annual chance flood plain depiction shown in the Flood Insurance Study for Williamson County, Texas and Incorporated Areas. The area of the LOMR includes property owned by the City, namely McNeil Park. The Federal Emergency Management Agency (FEMA) is requesting the City's acceptance of the revised flood plain prior to issuance of the LOMR. Fundina: Cost: N/A Source of funds: N/A Outside Resources: Fisher Hagood, Inc. Backaround Information: The Flood Insurance Rate Map (FIRM) for a community depicts land which has been determined to be subject to a 1% (100 -year) or greater chance of flooding in any given year. The FIRM is used to determine flood insurance rates and to help the community with flood plain management. The Engineering and Development Services staff has reviewed the LOMR application and recommend that the City Manager sign the referenced letter. The LOMR application indicates that the base flood elevations in the vicinity of McNeil Park will be reduced from the currently effective base flood elevations. Public Comment: N/A Blue Sheet Format Updated 02/2007 March 26, 2008 Mr. Jim Nuse, P.E., City Manager City of Round Rock 221 E. Main Street Round Rock, Texas 78664 CIVIL & STRUCTURAL ENGINEERING RE: Notification of widening and narrowing of 1% (100 -year) annual chance floodplain and establishment of Base Flood Elevations Dear Mr. Nuse, The Flood Insurance Rate Map (FIRM) for a community depicts land which has been determined to be subject to a 1% (100 -year) or greater chance of flooding in any given year. The FIRM is used to determine flood insurance rates and to help the community with floodplain management. Fisher Hagood, Inc. is applying for a Letter of Map Revision (LOMR) from the Federal Emergency Management Agency (FEMA) on behalf of McNeil Real Estate Ltd. To revise FIRM 48491CO240 C for the City of Round Rock, Texas along Chandler Branch. McNeil Real Estate Ltd. is proposing to revise the FIRM to reflect updated topographic conditions along the southern boundary of East Chandler Retail Center (University Oaks Shopping Center) located on the southeast corner of 1H 35 and University Oaks Boulevard. The Letter of Map Revision will result in (please refer to the attached map): Special Flood Hazard Area (SFHA) maximum increase in width of 200 feet approximately 1,150 feet downstream of IH 35 North and maximum decrease in width of 110 feet approximately 250 feet upstream of IH 35 South. 2. Base Flood Elevation (100 year) maximum increase in elevation of 1.2 feet approximately 1980 feet upstream of IH 35 South and maximum decrease in elevation of 2.5 feet approximately 1380 feet upstream of IH 35 South. We would like to obtain your acceptance of the changes to the 1% annual chance water -surface elevation and 1% annual chance floodplain on your property at 3701 IH 35 N, Round Rock, Texas. Please sign and date the provided copy of the letter to signify your acceptance and return it to Mr. Terry R. Hagood, P.E., at Fisher Hagood, Inc., 1 Chisholm Trail, Suite 5200, Round Rock, Texas, 78681 1. If you have any questions or concerns about the proposed changes to the FIRM or its effect on your property, you may contact me at 512-244-1546. Sincerely, Fisher Hagood, Inc. A0"- Terry R. Ha E. 1, Jim Nuse, City Manager for the City of Round Rock, accept changes in the 1% annual chance water -surface elevations and redelineation of the 1% annual chance floodplain as described above. Pri‘ify Owner — City of Round Rock Date ►(1M- c-b�F-c3'S One Chisholm Trail, Suite 5200 • Round Rock, Texas 78681 • P: 512.244.1546 F: 512.388.3698 • www.fhi.eng.pro "Innovation engineered from the ground up" €ER: 390 .. ATE ATE E HU: H /A(( NORTH R ND ROC a, TEXAS 7 681 SHEET TITLE: DESIGNED BY: A.M.R, CHECKED BY: T.R.H. NOTICE: 1. THIS DOCUMENT, THE IDEAS AND DESIGN INCORPORATED HEREIN ARE AND SHALL REMAIN THE PROPERTY OF FISHER HAG000, INC. THESE DOCUMENTS ARE NOT TO BE USED OR ALTERED, IN WHOLE OR IN PART, FOR OTHER THAN THE ORIGINAL INTENDED USE, NOR ARE THEY TO BE ASSIGNED TO ANY THIRD PARTY WITHOUT WRITTEN PERMISSION FROM FISHER HAGOOD, INC. 2. BY THE ACT OF SUBMITTING A BID FOR THE PROPOSED CONTRACT, THE BIDDER WARRANTS THAT THE BIDDER, AND ALL SIUBCONTRACTOR5 AND MATERIAE. SUPPLIERS HE INTENDS TO USE HAVE CAREFULLY AND THOROUGHLY REVIEWED THE DRAWINGS AND SPECIFICATIONS AND OTHER CONSTRUCTION CONTRACT DOCUMENTS AND HAVE FOUND THEM COMPLETE AND FREE FROM ANY AMBIGUITIES AND SUFFICIENT FOR THE PURPOSE INTENDED. THE BIDDER FURTHER WARRANTS THAT TO THE BEST OE HIS OR HIS SUBCONTRACTORS AND MATERIAL SUPPLIERS KNOWLEDGE ALL MATERIALS AND PRODUCTS SPECIFIED OR INDICATED HEREIN ARE ACCEPTABLE FOR ALL APPLICABLE CODES AND AUTHORITIES. FHI JOB #: 25036.4 DATE ISSUED: 03/26/08 ISSUED FOR: REVIEW THE SEAL APPEARING ON THIS DOCUMENT WAS AUTHORIZED BY TERRY R. HAG000, F.E. 52960. THIS DRAWING MAY NOT BE MODIFIED WITHOUT THE EXPRESS WRITTEN CONSENT OF THE ENGINEER, AND THEN ONLY IN ACCORDANCE WITH THE RULES OF THE TEXAS ENGINEERING PRACTICE ACT, Fisher Nagood Crni and Structural E. nglneering 'Plac%3iiGn engineered from the ground up`. One Chisholm Trail, Suite 5200 Round Rock TX 78681 (512) 2441546 Office (512) 388.3698 Fax www.f f sherhagoad,com