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DR9305-CS 9307155. Flood Boundaries and 10 RIVERINE MAPPING FORM Has the 100-year floodpl increased at any location If yes, please give the loc PROPOSED INCREASE FLOOD ELEVATIONS ARE ON THE REQUESTORS PROPERTY ater surface elevation ~unity's? [-"] 'Yes ~ No r the increase. EXISTING bo Have the affected property owners been notified of this shift or increase and the effect it will have on their property? ~] Yes [] No If yes, please attach letters from these property owners stating they have no objections to the revised flood boundaries. SEE ATTACHED What is the number of insurable structures that will be impacted by this shift or increase? ZERO o Have the floodway boundaries shifted or increased at any location compared to those shown on the effective FBFM or FIRM? f~ Yes [] No If yes, explain: EFFECTIVE FIS IGNORED THE EXISTING~ NATURALLY CREATED BY-PASS CHANNEL WHICH CARRIES A LARGE PART OF THE DISCHARGE BUT WAS EXCLUDED FROM THE FLOODWAY IN THE EFFECTIVE FIRM Manual or digital map submission: ~ Manual [] Digital Digital map submissions may be used to update digital FIRMs (DFIRMs). For updating DFIRMs, these submissions must be coordinated with FEMA Headquarters as far in advance of submission as possible. October 1992 Pao~ 2 of 3 RIVERINE MAPPING FORM Mapping Changes (Continued) Flood Boundaries and lO0-year water surface elevations: Has the lO0-year floodplain been shifted or increased or the lO0-year water surface elevation increased at any location on property other than the requestor's or community's? [--'] Yes ~ No I£yes, please give the location of shift or increase and an explan~, tion for the increase. PROPOSED INCREASED FLOOD ELEVATIONS ABOVE THE REVISED EXISTING FLOOD ELEVATIONS ARE ON THE REQUESTORS PROPERTY Have the affected property owners been notified of this shift or increase and the effect it will have on their property? :~ Yes [-] No If yes, please attach letters from these property owners stating they have no objections to the revised flood boundaries. SEE ATTACHED What is the number of insurable structures that will be impacted by this shift or increase? ZERO Have the floodway boundaries shifted or increased at any location compared to those shown on the effective FBFM or FIRM? [~] Yes [] No If yes, explain: EFFECTIVE FIS IGNORED THE EXISTING, NATURALLY CREATED BY-PASS CHANNEL WHICH CARRIES A LARGE PART OF THE DISCHARGE BUT WAS EXCLUDED FROM THE FLOODWAY IN THE EFFECTIVE FIRM Manual or digital map submission: ~] Manual [--] Digital Digital map submissions may be used to update digital FIRMs (DFIRMs). For updating DFIRMs, these submissions must be coordinated with FEMA Headquarters as far in advance of ~ submission as possible. October 1992 Pag~ 2 of 3 A~P LICATION/C~elCATION ~ FOR CONI~TI(~AL ~ OF MAP ~.~'V]~XO~. L~"Tr~Zt Olv M~I~IIlI'V~(~( ~ t.i.t I~.q,,L ~ ~ Community Name: Flooding Source: FEMALE ONLY RIVERINEMAPPINGFORM CITY OF COPPELL~ TEXAS GRAPEVINE CREEK REV. FORM 7/15/93 Project NameAdentifier: GRAPEVINE SPRINGS PARK Mapping Changes A topographic work map of suitable scale, contour interval, and planimetric definition must be submitted showing (insert N/A when not applicable): A. Revised 100- year floodplain boundaries (Zone A) B. Revised 100- and 500-year floodplain boundaries C. Revised 100-year floodway boundaries D. Location and alignment of all cross sections used in the revised hydraulic model with stationing control indicated E. Stream alignments, road and dam alignments F. Current community boundaries G. Effective 100- and 500-year floodplain and 100-year floodway boundaries from the FIRM/FBFM reduced or enlarged to the scale of the topographic work map H. Tie-ins between the effective and revival 100- and 500-year floodplains and 100-year floodway boundaries I. The requestor's property boundaries and community easements J. The signed certification ora registered professional engineer K. Location and description of reference marks L. Vertical datum (example: NGVD 1929, NAVD 1988, etc.) Included [~] Yes ["-[ No ['~ N/A [] Yes [] No [] N/A [] Yes [~ No [] N/A [] Yes ~ No [] N/A [] Yes I--1 No [] N/A [] Yes ~ No I--I N/A Itl Yes ['"'] No ['--[ N/A [] Yes [=-] No [] N/A I-x'l Yes I--I No [] N/A [] Yes ['"'] No [] N/A [] Yes [] No [] N/A 1-~ Yes [~ No [--I N/A IfanyoftheitemsabovearemarkednoorN/A, pleaseexplain: A. No oronosed chan~e~ to Zone 'A' floodplains H. Tie-in w/ LOMA 8/10/92 L. FF21A RMs used for field surveys, City topo maps used for base maps. What is the source and date of the updated topographic information (example: orthophoto maps, July 1985; field survey. May. 1979, beachorofiles, June 1987, et~ )7 Cit}[ aerial topo maps dated 2-29-92 anO on-site field surveys 5-8~'~ud ~-~2 What is the scale and contour interval of the following workmaps? a. Effective FIS UNKNOWN scale UNKNOWN Contour interval b. Revision Request 1"=200' scale 2 ' Contour interval Attach an annotated FIRM and FBFM at the scale of the effective FIRM and FBFM showing the revised 100-year and 500-year floodplains and the 100-year floodway boundaries and how they tie into those shown on the effective FIRM and FBFM downstream and upstream of the revision. SEE ATTACHED Attach additional pages if needed. October 1992 Page I of 3 July 15, 1993 Federal Emergency Management Agency 1725 'I' Street N. Washington, D.C. 20472 RE: Case Number 93-06-267R, Request for a Conditional Letter of Map Revision on Grapevine Springs in Coppell, Texas Grapevine Springs Park Project Dear Mr. Magnotti: Enclosed please find revised FEMA Forms 1, 2, 4 & 5, plus a check for $ 735.00 to cover the initial review fee as requested in your letter of July 8, 1993. The technical report (dated 6-3-93) pre- pared by Graham Associates, Inc. which contains HEC-2 hydraulic models, floodway and floodplain mapping and construction plans for this proposed project is un-effected by these revised forms. As the designated official in charge of administrating the City of Coppell's floodplains, I do hereby request that FEMA review this technical report and issue a CLOMR, also, I hereby request that FEMA revise the floodways, in accordance with this report, after the project is constructed. The City of Coppell agrees to maintain and repair, if needed, the hydraulic improvements proposed by this project as described in the attached maintenance plan. The City of Coppell has notified all effected property owners of the City's intent to revise the floodplain and floodway. A list of these property owners is attached along with a sample notification letter. At this point, the City has not received comments from the effected property owners, however any forth- coming comments will be forwarded to FEMA. If you have any technical questions about the project please con- tact Neal Chisholm of Graham Associates (817-640-8535), however administrative questions should be directed to Mr. Ken Griffin at the City of Coppell (214-393-1016). Thank you for your con- sideration of this request. Sincerely, CITY OF COPPELL Kenneth M. Griffin, P.E. City Engineer cc: Jack Quarles, FEMA Region VI Jack Hedge, P.E., Dallas County Neal Chisholm, P.E. Graham Assoc. Rick Wieland, Parks and Rec. Mgr. July 15, 1993 Maintenance Plan Grapevine Springs Park Project City of Coppell, Texas The purpose of the following maintenance is to provide adequate hydraulic conveyance in the park project area, especially the by-pass channel. Additional and more frequent maintenance may be necessary for park access, aesthetics and/or park usability. The park shall be visually inspected at least once a year by City staff personnel familiar with the hydraulic considerations. Also, the park shall be visually inspected after significant flood events. Written notes, photographs and/or notations on maps or drawings will be taken by the inspector and retained by the City. The grass, weeds and/or brush in the main channel and in the by- pass channel will be mowed at least twice a year. Accumulated sediment will be removed from the main and by-pass channels and disposed of in non-floodway areas. Sediment removal will be on an as-needed basis. Minor amounts of water born debris will be removed twice a year in conjunction with park mowing. Fallen trees, logs and other large debris that is obstructing the main or by-pass channels, (or that may become lodged in the stream channel during a flood event) shall be removed promptly. Future repairs to the proposed foot bridges, the proposed con- crete erosion protection and the existing stone lake walls shall be performed in a manor consistant with FEMA rules regarding work in a designated floodway. Catallus Development Corp. Suite 600 5429 LBJ Frwy. Dallas, Tx 75240-2609 Prentiss Copley Inv. Group Suite 5000 1717 Main St Dallas, Tx 75201 Soto Amado 606 Meadowiew Coppell, Tx 75019 Made Nixon 312 Southwestern Coppell, Tx 75019 Alta Lagrone 6308 Woodstream Ct. Dallas, Tx 75240 Brenda & Kay Beth Florence Mertz 146 Crescent Dr. Granbury, Tx 76049-5315 Daniel C. Soto P.O. Box 151 Coppell, Tx 75019 E.V. Matthews 304 Southwestern Blvd. Coppell, Tx 75019 July 15, 1993 Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Atto: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 E.V. Matthews 304 Southwestern Blvd. Coppell, Tx 75019 Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be ~,~,~ feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. G-riff'm, P.E. City Engineer July 15, 1993 Brenda & Kay Beth Florence Mertz 146 Crescent Dr. Granbury, Tx 76049-5315 Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be tY,~t~ feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 Alta Lagrone 6308 Woodstream Ct. Dallas, Tx 75240 Re.' Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be 6)t c~7, feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 Daniel C. Soto P.O. Box 151 Coppell, Tx 75019 Re: Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be t9, ~/~ feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 Made Nixon 312 Southwestern Coppell, Tx 75019 Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream' s flooding charaemfisfics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be % 70 feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 SotS Amaao 606 Meadowiew Coppell, Tx 75019 Re: Grapevine Springs Park Project Grapevine Creek, CoppeR, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be ~,,7~) feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer' s Office city of coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 Prentiss Copley Inv. Group Suite 5000 1717 Main St Dallas, Tx 75201 Re: Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a de~_~iled study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain maps. We have estimated this rise to be ~ · ~ ] feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer July 15, 1993 Catallus Development Corp. Suite 600 5429 LBJ Frwy. Dallas, Tx 75240-2609 Grapevine Springs Park Project Grapevine Creek, Coppell, Texas Dear Property Owner, construction will be starting soon on a new park located on Grapevine Creek South of Bethel Road. Because the proposed project involves construction in the stream channel itself, a detailed study of the stream's flooding characteristics has been performed. The proposed work will NOT result in higher flood elevations, as compared to the existing conditions, outside of the park area. However, the existing condition flood levels are higher then those shown on the City's floodplain raps. We have estimated this rise to be '~',O (:> feet on your property. This may or may not be significant to you. The City is interested in your comments on this matter and invites written comments to be sent to: City Engineer's Office City of Coppell P.O. Box 478 Coppell, Texas 75019 Attn: Grapevine Springs Park Project Thank you for your cooperation. Sincerely, Kenneth M. Griffin, P.E. City Engineer