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FS9901-CS020619MEN Halff Associates ENGINEERS • ARCHITECTS • SCIENTISTS PLANNERS • SURVEYORS wfiH�So� 6 �{e r-S 9�-0/ 8616 NORTHWEST PLAZA DRIVE DALLAS, TEXAS 75225 S QQ� (214) 346 -6288 FAX (214) 739 -0095 June 19, 2002 AVO 17669 Mr. Joseph A. Martinenza, Jr. Acting Program Manager, Region VI PBS &J 12101 Indian Creek Court Beltsville, MD 20705 RE: Case No. 02- 06- 1090P, City of Coppell, Dallas County, Texas (Community No. 480170) Dear Mr. Martinenza: This letter responds to all of the comments, dated March 22, 2002, that the Federal Emergency Management Agency (FEMA) issued in response to the request for a revision to the Flood Insurance Rate Map (FIRM) for the above referenced community. The 90 -day deadline is on Thursday, June 20, 2002. A statement indicating the action or steps taken to respond to each comment is provided below. A copy of the Letter of Map Revision (LOMR) was sent to Mr. Doug Keesey of the Dallas County Public Works Department. After a quick review, he informed me that the unincorporated area in question was actually in Denton County instead of Dallas County. Therefore, I sent another copy to Ms. Cathy Allcorn of the Denton County Public Works Department. Her department has reviewed the LOMR and has provided us with a signed copy of the Application /Certification Form 1, titled "Revision Requester and Community Official Form. It is provided as an attachment to this letter. 2. An additional copy of the electronic natural and floodway post - project models has been provided as an attachment to this letter. 3. The submitted map titled Flood Plain and Floodway Delineations, contained within the LOMR titled, Windsor Estates and DeForest Court, has been updated. The flow line used in the hydraulic model has been added. In addition, the topographic information was made to print out darker and the map was printed on 24" X 36" paper to help make it more legible. 4. A signed affidavit from the Citizens' Advocate, the local newspaper of Coppell, Texas, has been provided stating that the public notice has been printed twice, on May 17, 2002 and also on June 07, 2002. 5. A letter from Mr. Kenneth M. Griffin, P.E., Floodplain Administrator for the City of Coppell, Dallas County, Texas, has been provided as an attachment to this letter. The DALLAS • FORT WORTH • HOUSTON • McALLEN TRANSPORTATION • WATER RESOURCES • LAND DEVELOPMENT • MUNICIPAL • ENVIRONMENTAL • STRUCTURAL MECHANICAL • ELECTRICAL SURVEYING • GEOGRAPHIC INFORMATION SYSTEMS ARCHITECTURE LANDSCAPE ARCHITECTURE • PLANNING I ; Halff Associates ENGINEERS • ARCHITECTS • SCIENTISTS PLANNERS• SURVEYORS letter indicates in the first paragraph that the City of Coppell agrees to adopt and enforce the modified floodway. 6. The revised (post - project) model does not affect the 100 -year floodplain or floodway, by widening or shifting, either upstream or downstream of the property owned by the requester for this Letter of Map Revision. Application /Certification Form 1, titled "Revision Requester and Community Official Form has been provided with the original submittal. In addition, the 100 -year floodplain elevation has not been raised at any location within the study limits, from the corrected effective model to the revised (post - project) model. In several instances, the 100 -year floodplain elevations have been slightly reduced. 7. A letter from Mr. Kenneth M. Griffin, P.E., Floodplain Administrator for the City of Coppell, Dallas County, Texas, has been provided as an attachment to this letter. a. The second paragraph indicates that the finished floor elevations are above the base flood. b. The second paragraph indicates that the area to be removed from the SFHA is reasonably safe from flooding. c. The third paragraph indicates the Floodplain Development Permit has been issued on June 9, 2000. d. Same as (c) above. e. The third paragraph indicates that no fill has been placed in the floodway to cause a rise in the base flood. 8. The storage basin located within the project site is used only to compensate for the loss of valley storage. It is not used for any hydraulic routing purposes for this reach. If you have any questions or comments concerning this request, please feel free to call either Walter Skipwith (214) 346 -6220 or myself at (214) 217 -6650. Sincerely, HALFF ASSOCIATES, INC. Terry Rogers Enclosures FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B No. 3067 -0148 REVI REQUESTER AND COMMUNITY OFFICIAL Expires April 3 0 2 Public reporting burden for this form is estimated to average 2.13 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing and reviewing the form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, Federal Emergency Management Agency, 500 C Street, S.W., Washington DC 20472; and to the Office of Management and Budget, Paperwork Reduction Project (3067- 0148), Washington. DC 20503. You are not required to respond to this collection of information unless a valid OMB Control Number is displayed in the upper right corner of this form. Lif. ■1Si �V�X0" -M.11 1iVl V AID �ZIN]MM »IT1 F11 This request is for a: ❑ CLOMR A letter from FEMA commenting on whether a proposed project, if built as proposed, would justify a map revision, or proposed hydrology changes (See 44 CFR Ch. 1, Parts 60,65 & 72). ® LOMR A letter from FEMA officially revising the current NFIP map to show the changes to floodplains, floodway or flood elevations. LOMRs typically decrease flood hazards. (See 44 CFR Ch. 1 Parts 60 & 65.) ❑ Other Describe: TAT T Jx !1!1 1. The basis for this revision request is (are): (check all that apply) ❑ Physical Change ❑ Improved Methodology /Data ® Floodway Revision ❑ Other Describe: _ Note: A photograph is not required, but is very helpful during review. 2. Flooding Source: Denton Creek 3. Project Name /Identifier: Windsor Estates And DeForest Court 4. FEMA zone designations affected: AE (example: A, AH, AO, Al -A30, A99, AE, V, V1 -V30, VE, B, C, D, X) 5. The NFIP map panel(s) affected for all impacted communities is (are): Community No. Community Name State Map No. Panel No. Effective Ex: 480301 480287 Katy, City Harris County TX 480301 0005D Date 02/08/83 480195 Denton County Texas And Incorporated Areas TX TX 48201C 48121 C 0220G 0705F 09/28/90 08/23/2001 6. The area of revision encompasses the following types of flooding and structures. Check all that apply. Types of Flooding Structures ® Riverine ❑ Channelization ❑ Coastal ❑ Levee /Floodwall ❑ Alluvial fan ❑ Bridge /Culvert ❑ Shallow Flooding (e.g. Zones AO and AH) ❑ Dam ❑ Lakes ® Fill ❑ Other describe ® Other describe L PLEASE REF TO T HE INSTRUCTION F OR T HE APPROPRIATE MAILING ADDRESS FEMA Form 81 -89 Revision Requester and Community Official Form MT -2 Form 1 Page 1 of 2 4. ENCROACHMENT INF0nMATlnnl Does the State have jurisdiction over the floodway or its adoption by communities participating in the NFIP? ❑ Yes N No If Yes, attach a copy of a letter notifying the appropriate State agency of the floodway revision and documentation of the approval of the revised floodway by the appropriate State agency. 2. Does the development in the floodway cause the 1% annual chance (base) elevation to increase at any location by more than 0.000 feet? ❑ Yes N No ❑ N/A 3. Does the cumulative effect of all development that has occurred since the effective SFHA was originally identified cause the base flood elevation to increase at any location by more than one foot (or other increase limit if community or state has adopted more stringent criteria - even if a floodway has not been delineated by FEMA)? ❑ Yes N No If the answer to either items is Yes, please attach documentation that all requirements of Section 65.12 of the NFIP regulations have been met, regarding evaluation of alternatives, notice to individual legal property owners, concurrence of CEO, and certification that no insurable structures are impacted. [•l�l'II�1I k 00 "W'N\\'L" WIN .l. 011DA, 1 m11 ME M'/ The community is willing to assume responsibility for ❑ performing N overseeing compliance with the maintenance and operation plans of the Windsor Estates and DeForest Court (Name) flood control structure. If not performed promptly by an owner other than the community, the community will provide the necessary services without cost to the Federal government. and maintenance plans are attached. ❑ Yes ❑ No N N/A L*M all WAI mill, 1 1 1 MO0 o The review fee for the appropriate request category has been included. N Yes Fee amount: $ 3.400.00 OR This request is based on a federally sponsored flood - control project where 50 percent or more of the project's cost is federally sponsored, or the request is based on detailed hydrologic and hydraulic studies conducted by Federal, State, or local agencies to replace approximate studies conducted by FEMA and shown on the effective FIRM; thus the project is fee exempt. ❑ Yes Please see Instructions for Fee Amounts /. blUNATURE Note: I understand th my si nature indicates that all information Note: Signature indicates that the community understands, from the submi d' upp f thi r nest is correct revision requester, the impacts of the revision on flooding c inj4iq c ommunity. Signature of Revision Requester _/ J Signature of Community Official Kelly Jordon. Manager Cathy Allcom, Planning Manager Printed Name and Title of Revision Requester Printed Name and Title of Community Official Coppell Optimum Assets, L.L.C. Denton County, Texas Company Name Community Name Telephone No.: (214) 357 -0505 Date: 06/12/2002 Telephone No.: (940) 349 -2990 Date: 06/12/2002 CERTIFICATION BY REGISTERED PROFESSIONAL Check which forms have been included with this request ENGINEER AND /OR LAND SURVEYOR This certific ti is in agcprdan4 CFR Ch. 1, Sect 65.2 "��v Form Name and (Numbed Required If ...... �jj ❑ Hydrologic (3) new or revised discharges ® Hydraulic (4) new or revised water - surface elevations ® Mapping (5) floodplain/floodway changes Signature ❑ Channelization (6) channel is modified Walter E. Skipwith, P.E.. Vice President ❑ Bridge /Culvert (7) addition/revision of bridge /culvert ❑ Levee /Floodwall (8) Printed Name and Title of Revision Requester addition /revision of levee /floodwall ❑ Coastal (9) new Registr No. 48752 Expires (Date) 12/31/02 State TX or revised coastal elevations ❑ Coastal Structures (10) addition/revision of coastal structure ❑ Dam (11) addition/revision of dam Type of License /Expertise: Civil Engineer ❑ Alluvial Fan (12) structures proposed on alluvial fan FEMA Form 81 -89 Revision Requester and Community Official Form MT -2 Form 1 Page 2 of 2 ;; ■, Halff Associates ENGINEERS • ARCHITECTS • SCIENTISTS PLANNERS• SURVEYORS May 6, 2002 Cathrine Walker Citizens' Advocate e -mail: citizensadvocate @hotmail.com Re: Public Notice Dear Ms. Walker: 8616 NORTHWEST PLAZA DRIVE DALLAS, TEXAS 75225 (214) 346 -6200 FAX (214) 739 -0095 Please publish the attached notice in the Citizens' Advocate under LEGALS. The notice must be published twice Please return to me an Affidavit of Publication, which must be signed and notarized for the Federal Emergency Management Agency. If you need additional information, you can reach me by phone at (214) 217 -6650, by FAX at (214) 273 -1307, or e-mail at trogers @halff.com. The affidavit and the billing for this notice should be returned to: Halff Associates, Inc., 8616 Northwest Plaza Drive, Dallas, TX 75225, Attn.: Terry Rogers. Thank you for your help. Sincerely, HALFF ASSOCIATES, INC. Terry Rogers NOTICE OF PROPOSED REVISION OF FLOODPLAIN MAPS Coppell Optimum Assets, L.L.P. has submitted a study to the Federal Emergency Management Agency which requests changes in the defined 100 -year floodplain and floodway on Denton Creek in a reach that extends from approximately 2.2 miles to 4.0 miles upstream of the confluence of Denton Creek with the Elm Fork of the Trinity River. These changes reflect the site improvements that were constructed along a portion of this reach of Denton Creek in 2001. Specifically, Coppell Optimum Assets, L.L.P. is requesting revisions to the Flood Insurance Rate Map for Dallas County, Texas and Incorporated Areas, (Community Panel No. 48113CO155 J). A copy of the report entitled 'Request for a Letter of Map Revision on Denton Creek, Coppell, Texas, for Windsor Estates and DeForest Court", dated March 1, 2002 may be reviewed at Halff Associates, Inc., 8616 Northwest Plaza Drive, Dallas, T 75225. DALLAS • FORT WORTH • HOUSTON • McALLEN TRANSPORTATION • WATER RESOURCES • LAND DEVELOPMENT • MUNICIPAL • ENVIRONMENTAL • STRUCTURAL MECHANICAL • ELECTRICAL SURVEYING • GEOGRAPHIC INFORMATION SYSTEMS ARCHITECTURE LANDSCAPE ARCHITECTURE • PLANNING 9723040203 CITIZENS' ADVOCATE OFFICUo Ci�t•izens' Advocate 446 W. Bethel i Coppell, TX 75019 Established 1984 308 P02 JUN 19 '02 13:27 MAILINV, ADDRESS: P. O. Box 357 Coppell, TX 75019 Ph: 972- 482 -8192 Serving Cappell, Valley Ranch and Hackberry Creek Estates. Jean Murph, Fax: 972. 304 -0203 ; Publisher THE STATE OF TEXAS County of Dallas Before me, a Notary Public In and for said Dallas County, State of Texas, this day personally appeared til QCq al 5pA\I_ repriesenting the Citizens' Advocate, the otficial; newspaper for the City of Coppell, published by the Citizens' Advocato, In the City of Coppell, in Dallas County, Texas, and who, after being duly sworn, did verity and say that the following clipping of an advertisement was published In the above named paper on the following dates: QOCS IPTION AND/OR QLIPPINQ FA /C X y /( TOTALINCH RATE j SIGNED: j C izens' Advocate his document is used for the lie purpose of verifying a caption and not for billing purposes.) DAY OF Q SU SQ _CRIBED AND SWORN TO BEFORE E, THIS THE _ - "- ;':� ••', °•�s DEBBIE PLATZ Notary P010 STATE OF TWs ota -- -- Commission FWfas 0212 ` •.,,..,.• Printed Namee Notary Commission Expires NOTARIZED CAPTION 0588DS SENT BY: CITY OF COPPELL,- 972 304 7041; JUN -12 -02 10:33AM; PAGE 2/2 T H E c 1 T Y ... _ . 0 .. F COPPELL lk 0 y Joseph A. Martinenza, Jr. Acting Program Manager, Region VI PBS&J 12101 Indian Creek Court Beltsville, MD 20705 RE: Case # 02- 06- 1090P/ Windsor Estates & Deforest Court Floodplain of Denton Creek FIRM #4811 C01 55J August 23, 2001 Dear Mr. Martinenza: June 11, 2002 The City of Coppell has reviewed the referenced map revision request and understands the impact of the proposed revisions to the floodplain of Denton Creek. The City of Coppell offers no objections to the requested map revisions and agrees to adopt and enforce the modified floodplain and floodway limits in accordance with the National Flood Insurance Program regulations and the City of Coppell's FloodpUn Management Ordinance as adopted by City Council on June 26, 200I (see attached). In accordance with the National Flood Insurance Program regulations and the City of Coppell's Floodplain Management Ordinance, the reclamation of property associated with Windsor Estates and DeForest Court is reasonably safe from flooding associated with the 100 -year floodplain of Denton Creek - The City of Coppell's Floodplain Management Ordinance does not allow any construction within a designated floodplain. In this particular area the floodplain elevation is 452. The lowest allowed minimum finished floor in Deforest Court is 453.4 and the lowest allowed minimum finished floor in Windsor Estates is 455.2. The allowable minimum finished floors are as established in the Letter of Map Revision Study for Denton Creek. Floodplain Development Permit #000609AH was issued on June 9, 2000 for the reclamation of Windsor Estates and DeForest Court. Based on the existing floodplain maps and the reclamation study no fill has been placed within a floodway. Also the study shows that there is no rise in the base flood elevations. If you have any questions or comments regarding this matter, do not hesitate to call me. Sincerely, Kenneth M. k � )i ri , P.E. Floodplain Administrator Director of Engincering/Public Works Office 972/304 -3686 Fax 972- 304 -7041 235 PARKWAY A P.O.60k X79 i GOPPELt, Tx 73019 k rLrL 972/464 0022 • FAX 972/304 9673