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Carter Addn 3-SY110427 (2)W DOWDEY, ANDERSON NEW& ASSOCIATES, INC. CIVIL ENGINEERS 5225 Village Creek Drive, Srite 200 Plano, Texas 7SO93 Phone 972.931• 0694 Fax 972.931.9S38 To: George Marshall, P.E. TRANSMITTAL From: /.Casey Ross, P.E. Co: City of Coppell Date: April 27, 2011 Address: 255 Parkway Boulevard CC: File Coppell, TX 750119 Phone: 972 - 3043679 Via: Courier Re: Carter Addition Phase III Job #: 07111 C CLOMR The following items are attached for your review regarding the above referenced project 1 — Copy of revised CLOW 1 — CLOMR response letter. 1 — Copy of the revised Fully (Developed Flood Study. Thank you, Casey Ross, P.E. R:\ Data \2007\07111 \00 \Corresponclence\Transmittals \07111 C- Trans - Coppell -2011- 04- 27- CLOMR.docx M D OWDEY, ANDERSON & ASSOCIATES, INC. CIVIL ENGINEERS 5225 Village Creek Drive Suite 200 Plano, Texas 15093 912. 931.0694 912. 931.9538 fax April 27, 2011 FEMA 500 C Street, SW Washington D.C. 20472 Re: Request for Conditional Letter of Map Revision - Grapevine Creek, City of Coppell, Dallas County, Texas To Whom It May Concern: Enclosed, please find the technical report for Grapevine Creek in the City of Coppell, Texas (Community No.. 480170) as shown on FIRM No. 48113C0155 J revised August 23, 2001. The effective model was obtained from the FEMA library. This analysis compares the effective conditions, the existing conditions and proposed conditions. Included in this report are the required FEMA forms, maps and figures and construction plans as applicable. HEC -RAS models are provided. Floodplain mapping is based on a topographic survey performed in July 2010. The report has been reviewed and accepted by the City of Coppell Engineering Department. A $4,400 check for review fees in included with this package. If you have any technical questions on this submission, please contact Mr. Casey Ross at 972 - 931 -0694. Administrative questions should be directed to Kenneth Griffin, P.E., Floodplain Administrator, the City of Coppell at 972 - 304 -3686. Thank you for your consideration of this request. Sinc rely Casey Ross, .E., CFM R:\ Data \2007\07111 \00 \H &H \F1ood \CL0MR \2011 -04 Submitta[42 \071114tr -FEMA- 2011 -04-CLOMR.doac M D OWDEY, ANDERSON & ASSOCIATES, INC. CIVIL ENGINEERS 5215 Village Creek Drive Suite 200 Plano, Texas 15093 972. 931.0694 972.931.9538 Fax April 27, 2011 Mr. Rob Paul Toll Brothers, Inc. Land Acquisitions Manager 2557 SW Grapevine Parkway, Suite 100 Grapevine, Texas 76051 Re: Notification of changing the location, widening, narrowing and reconfiguration of the 1% (100 -Year) annual chance floodplain. Dear Mr. Paul, 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. Dowdey, Anderson & Assoc., Inc., is applying for a Conditional Letter of Map Revision (CLOMR) from the Federal Emergency Management Agency (FEMA) on behalf of Toll Brothers, Inc., to revise FIRM No. 48113COl 55 J for Dallas County for the proposed Carter Addition Phase III development along Grapevine Creek. Your company, Toll Brothers, Inc., is proposing to revise the FIRM to reflect the Carter Addition Phase III development. The revision to the FIRM will result in relocation, widening, narrowing and reconfiguration of the 1% annual chance (Zone AE) floodplain for Grapevine Creek. The Conditional Letter of Map Revision will result in: 1. The floodplain modifications will widen and narrow the 100 -year floodplain. The narrowing of the 1% annual chance floodplain will have a maximum narrowing of 53 feet on your property on the north side of Grapevine Creek at a point approximately 1,080 linear feet upstream of the Moore Road bridge. The floodplain will have a maximum widening of 71 feet on your property on the south side of the creek at a point approximately 1,080 feet upstream of the Moore Road bridge. This letter is to inform you of the revision of the 1% annual chance (Zone AE) floodplain and the regulatory floodway on your property for the Carter Addition Phase III Development. We would like to obtain your acceptance of revision of the 1% (100 -year) annual chance (Zone AE) floodplain revision on your property for the Carter Addition Phase III development. Please sign and date the provided copy of this letter to signify your acceptance and return it to Dowdey, Anderson and Associates, Inc. by mail, email or fax at 972 - 931 -9538. If you have any questions or would like to review the CLOMR request do not hesitate to call. If you have any questions or concerns about the proposed changes to the FIRM or its effects on your property, you may contact me at 972 -931 -0694. Si e;e, Casey Ross, P , CFM I, Rob Paul, accept the re- delineation of the 1% annual chance floodplain as described above. Rob Paul Date R:\ Data \2007\07111 \00 \H &H \Flood \CLOMR \2011 -04 Submittal -#2 \07111- Notification Letter- Toll-2011 -04.27.docx rAA:OWDEY, ANDERSON & ASSOCIATES, INC. CIVIL ENGINEERS 5225 Village Creek Drive Suite 200 Plano, Texas 75093 972.931.0694 972. 931.9538 Fax April 27, 2011 Mr. Kenneth M. Griffin, P.E. Floodplain Administrator City of Coppell 255 Parkway Coppell, TX 75019 Re: Notification of changing the location, widening, narrowing and reconfiguration of the 1% (100 -Year) annual chance floodplain. Dear Mr. Griffin, 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. Dowdey, Anderson & Assoc., Inc., is applying for a Conditional Letter of Map Revision (CLOMR) from the Federal Emergency Management Agency (FEMA) on behalf of Toll Brothers, Inc., to revise FIRM No. 48113C0155 J for Dallas County for the proposed Carter Addition Phase III development along Grapevine Creek. Toll Brothers, Inc., is proposing to revise the FIRM to reflect the Carter Addition Phase III development. The revision to the FIRM will result in relocation, widening and reconfiguration of the 1% annual chance (Zone AE) floodplain for Grapevine Creek. The Conditional Letter of Map Revision will result in: 1. The floodplain modifications will widen the 100 -year floodplain. The floodplain will have a maximum widening of 60 feet on your property on the south side of the creek at a point approximately 2,100 feet upstream of the Moore Road bridge. This letter is to inform you of the revision of the 1% annual chance (Zone AE) floodplain on the Belt Line Road Right -of -Way west of the intersection with Moore Road. We would like to obtain your acceptance of revision of the 1% (100 -year) annual chance (Zone AE) floodplain revision on the Belt Line Road Right -of -Way west of the intersection with Moore Road. Please sign and date the provided copy of this letter to signify your acceptance and return it to Dowdey, Anderson and Associates, Inc. by mail, email or fax at 972-931-9538. If you have any questions or would like to review the CLOMR request do not hesitate to call. If you have any questions or concerns about the proposed changes to the FIRM or its effects on your property, you may contact me at 972 - 931 -0694. Si erely, Casey Ross, ., CFM I, Kenneth M. Griffin, accept the re- delineation of the 1% annual chance floodplain as described above. Kenneth M. Griffin Date R:\ Data\ 2007 \07111 \00 \H &H \F1ood \CL0MR \2011 -04 Submittal42 \07111 - Notification Letter - Coppell- 2011- 04- 27.docx AA\ANDERSON & ASSOCIATES, INC. CIVIL ENGINEERS 5225 Village Creek Drive Suite 200 Plano, Texas 75093 972.931.0694 972. 931.9538 Fax April 27, 2011 DALLAS AREA RAPID TRANSIT PO BOX 660163 DALLAS, TEXAS 75266 -0163 Re: Notification of changing the location, widening, narrowing and reconfiguration of the 1% (100 -Year) annual chance floodplain. To Whom It May Concern, 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. Dowdey, Anderson & Assoc., Inc., is applying for a Conditional Letter of Map Revision (CLOMR) from the Federal Emergency Management Agency (FEMA) on behalf of Toll Brothers, Inc., to revise FIRM No. 48113C0155 J for Dallas County for the proposed Carter Addition Phase III development along Grapevine Creek. Toll Brothers, Inc., is proposing to revise the FIRM to reflect the Carter Addition Phase III development. The revision to the FIRM will result in relocation, widening, narrowing and reconfiguration of the 1% annual chance (Zone AE) floodplain for Grapevine Creek. The Conditional Letter of Map Revision will result in: The floodplain modifications will widen and narrow the 100 -year floodplain. The narrowing of the 1% annual chance floodplain will have a maximum narrowing of 79 feet on your property on the south side of Grapevine Creek at a point approximately 1,850 linear feet upstream of the Moore Road bridge. The floodplain will have a maximum widening of 8 feet on your property on the south side of the creek at a point approximately 2,140 feet upstream of the Moore Road bridge. This letter is to inform you of the revision of the 1% annual chance (Zone AE) floodplain and the regulatory floodway on your property located adjacent to Belt Line Road west of the intersection with Moore Road in Coppell, TX. If you have any questions or would like to review the CLOMR request do not hesitate to call. If you have any questions or concerns about the proposed changes to the FIRM or its effects on your property, you may contact me at 972 - 931 -0694. erely, ' Si asey Ross, .., CFM R:\ Data\ 2007 \07111 \00 \H &H \Flood \CLOMR \2011 -04 Submittal -N2 \07111- Notification Letter -DART- 2011 -04- 27.doo FAF,k\OWDEY, ANDERSON & ASSOCIATES, INC. CIVIL ENGINEERS 5225 Village Creek Drive Suite 100 Plano, Texas 75093 972. 931.0694 972.931.9538 Fax April 27, 2011 Mr. Walter Foss 441 Carter Drive Coppell, Texas 75019 Re: Notification of changing the location, widening, narrowing and reconfiguration of the 1% (100 -Year) annual chance floodplain. Dear Mr. Paul, 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. Dowdey, Anderson & Assoc., Inc., is applying for a Conditional Letter of Map Revision ( CLOMR) from the Federal Emergency Management Agency (FEMA) on behalf of Toll Brothers, Inc., to revise FIRM No. 48113C0155 J for Dallas County for the proposed Carter Addition Phase III development along Grapevine Creek. Toll Brothers, Inc., is proposing to revise the FIRM to reflect the Carter Addition Phase III development. The revision to the FIRM will result in relocation, widening, narrowing and reconfiguration of the 1% annual chance (Zone AE) floodplain for Grapevine Creek. The Conditional Letter of Map Revision will result in: The floodplain modifications will widen and narrow the 100 -year floodplain. The narrowing of the 1% annual chance floodplain will have a maximum narrowing of 53 feet on your property on the north side of Grapevine Creek at a point approximately 1,080 linear feet upstream of the Moore Road bridge. The floodplain will have a maximum widening of 71 feet on your property on the south side of the creek at a point approximately 1,080 feet upstream of the Moore Road bridge. This letter is to inform you of the revision of the 1% annual chance (Zone AE) floodplain and the regulatory floodway on your property at 441 Carter Drive, Coppell, TX 75019. We would like to obtain your acceptance of revision of the 1% (100 -year) annual chance (Zone AE) floodplain revision on your property located at 441 Carter Drive, Coppell, TX 75019. Please sign and date the provided copy of this letter to signify your acceptance and return it to Dowdey, Anderson and Associates, Inc. by mail, email or fax at 972 - 931 - 9.538. If you have any questions or would like to review the CLOMR request do not hesitate to call. If you have any questions or concerns about the proposed changes to the FIRM or its effects on your property, you may contact me at 972 - 931 -0694. Sin asey RosJP, C M I, Walter Foss, accept the re- delineation of the 1% annual chance floodplain as described above. Walter Foss Date R:\ Data \2007\07111 \00 \H &H \Flood'�CLOMR \2011 -04 Submitta"2 \07111 - Notification Letter- Foss2011- 04- 27.doo Carter Addition Phase 111 Adjacent to Carter Dr. and Grapevine Creek, Coppell, Texas I, 1. Casey Ross, P.E., CFM certify that the design for the aforementioned development is reasonably safe from flooding in accordance with the guidance within FEMA's Technical Bulletin 10 -01 related to ensuring that structures are reasonably safe from flooding and in accordance with accepted professional practices. Currently there are no structures located in the FEMA floodplain on the property and therefore no structures that will be adversely affected by the proposed floodplain revisions. 'nature Engineer Title Profession Engineer Type of License 97272 License Number March, 2011 License Expiration Date ! o� 7/// Date ................ 3C'; J. CA,,-,L--y y 3 ..................... ,....... .. ', � 4f 1 f 114 r' o N. Dowdey, Anderson & Associates, Inc. 5225 Village Creek Dr. Ste 200 Plano, TX 75093 972 -931 -0694 Address and Phone NOTICE OF PROPOSED REVISION OF FLOOD PLAIN MAPS The City of Coppell, Dallas County, Texas and Toll Brothers Inc., in accordance with National Flood Insurance Program regulation 65.7(b)(1), hereby give notice of the City of Coppell's intent to revise the floodplain, generally located 1,800 feet upstream of Moore Road along Grapevine Creek. Grapevine Creek is located within the limits of the effective FIS as shown on FIRM #48113C0155J of Dallas County. The objective of this study is to define the 100 Year Floodplain of Grapevine Creek shown as a Zone "AE" on the above described FIRM. Specifically, the floodplain and floodway for Grapevine Creek shall be revised between two points approximately 1,800 feet and 2,100 feet upstream of the Moore Road bridge. As a result of the floodplain revision, the floodplain shall widen with a maximum widening of 71 feet at a point approximately 1,080 feet upstream of the Moore Road bridge and a maximum narrowing of 53 feet at a point approximately 1,080 feet upstream of the Moore Road bridge. Specifically, the City of Coppell and Toll Brothers Inc. are requesting revisions to the Flood Insurance Rate Map (FIRM) for the City of Coppell, Dallas County, Texas (Map Number 48113C0155J, Dated August 23, 2001). Maps and detailed analysis of the floodplain revision can be reviewed at the office of Dowdey, Anderson & Assoc., Inc. at 5225 Village Creek Dr. Suite 200, Plano, TX 75093.