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FIRM-940404
e/y ° 9� , The City With A Beautiful Future P.O. Box 478 Coppell, Texas 75019 214 - 462 -0022 Mr. Jack Quarles Federal Emergency Management Agency Region VI, Federal Center 800 North Loop 288 Denton, T% 76201 -3698 DA �A. DOWDEY AND ASSOCIATES, CIVIL ENGINEERS 16250 DALLAS PARKWAY SUITE 100 DALLAS, TEXAS 75248 (214) 931 -0694 FAX (214) 931 -9538 April 4, 1994 Mr. Kenneth Griffin, P. E. City Engineer City of Coppell 255 Parkway Boulevard Coppell, Texas 75019 Dear Ken: Attached is documentation to support the letter of map revision for Denton Creek at Gibbs Station. Please review this information and forward to FEMA. This revision is considered fee exempt. If you have any questions please call Allen J. Harts at 931 -0694. Sincerely, Allen J. Harts, P. E. AJH ; j rb Enclosure FLEAEEEN.PFFM FEDtRA�E ^,'ERGENCY MANAGEMENT AGENCY OMB Burden No 3067 -0148 FEMAUSEONLY REVISION REQUES T OR AND COMMUNITY OFFICIAL FORM Expires July 31, 1994 PUBLIC BURDEN DISCLOSURE NOTICE: 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 20-172; and to the Office of Management and Budget, Paperwork Reduction Project D (306 7- 0148), Washin - ton, C 20503. 1. OVERVIEW 1. The basis for this revision request is (are): (check all that apply) ❑ Physical change ❑ Existing ❑ Proposed ❑ Improved methodology S Improved data ❑ Floodway revision ❑ Other Explain 2 . Flooding Source: i ? � „ I � � c k c. 3. Project Name /Identifier. 4. FIEMA zone designations affected: A C X (example: A, All, AO, Al -A30, A99, AE, V, VI -30, VE, B, C, D, X) 5. The NFIP map panel(s) affected for all impacted communities is (are): Community Community 'flap Panel Effective No. Name County State No. No. Date EX: 480301 Katy,City IIarris, Fort Bend TX 480301 0005D 02/08/83 480287 Harris Countv Harris TX 48201 C 0220G 09/28/90 �7 6. The area of revision encompasses the following that apply) types of flooding, structures, and associated disciplines: (check all Types of Flooding Structures Disciplines* Riverine ❑ Channelization ED Water Resources ❑ Coastal ❑ Levee /Floodwall hydrology ❑ Alluvial Fan ❑ Bridge /Culvert Hydraulics ❑ Shallow Flooding (e.g. Zones AO anal All, ❑ Dam 0 Sediment Transport ❑ Lakes ❑ Coastal ❑ Interior Drainage ❑ Fill ❑ Structural Affected by ❑ Pump Station ❑ Geotechnical wind /wave action None ❑ Land Surveying ❑ Yes ❑ Channel Relocation ❑ Other (describe) ❑ No ❑ Excavation ❑ Other (describe) ❑ Other(describe) * Attach completed "Certification by Registered Professional Engineer and /or Land Surveyor" Form for each discipline checked. (Form 2) 2. FLOODWAY INFORMATION 7. Does the affected flooding source have it [loodway designated on the effective FIRM or hBE'M? EZ Yes ❑ No 8. Dies the revised (loodway delineation differ from that shown on the effective FIRM or FBFM ❑ Yes ❑ No II'Yes, give reason: _TI ; revision requestor and Community Official Form Form 1 Page 1 of 4 V to Z abed i WJ04 w)oy lepiuo Ajjunwwo:) pue iolsanbab uoisIAaa aJnl)n.ils lo.iluoa pooU ag1 Jol pawrdaJd uaaq lou sr.q ❑ srq ❑ '.iPaS auo ungl stiol Iou SIPAJalul IV UPld ay1 .�iujlsal AO) �uolsIAo.id pup 'aI1!1 Jo aturu IPnpinlpuI ,iq Sllllgisuodsa.iJo sluatuW issP pup, suollor oTIJloads pooU aglJo uoiiPluawnaop'ulpnloui `uo1lPJadoJo up,ld irui ioJ V 'D a.uilonJis aglJo uoilooloJd poOLiJO pus 01 Sq paianpuoa aq I f IM SaiiIiIJP.J lOJluOa pOoU aql JO,)3UPU,)jUlPw a1Pnjdo.iddP- `sumpadsui alpoiJad palnpayasJo sllnsaJ aql uo pasP11 fl suoilaadsul uaaMlaq ,giuoui JO IPAJaIUI u111u7lxPw P ql!M �lliva .�q Sllraipoi mcl palonpuoo aq iliM laafo.id ioJluoa pooU ag1Jo uoiiaadsul V :saanlanJls lodluoa pool) Mau aylJO qow) JOJ uollr.UiJoJu1 °UiMoIIOJ aq1 aplAOJd asrald 'saA Jl ON ® saA ❑ �( suirp' sul sPg'UOIIP'llauur.yo'slfr.MpoOU `saanal ` a) -).inionjls Ioaluoo pooU P -)AIOAUi a.uPya iPatsSgd agl sao(l "91 3:)NVN3INIVIN 0NV N0I1Vd3d0 *9 suollPln2all dIAN ai41JO (q) fi 99 uoijoaS ui pauillno sp, SlsanbaJ 1lr..1oJ paJinbaJ sl uo11POi_lilou Job pup. 1uaw2palMOuj:)P ,fliunwwoa 1P.y1 alou asrolcl :uiP.ldxa asr )ld 'suoilsanb anogP ayl jo .i,)glia of ou Ji ON ❑ saA ® �ifllunwwoo aql JO luawasiopua at{1 anrq IsanbaJ uolstnaJ slgi sao(l v 1 ON ❑ saA ® 0a3uruip.l0 Iuawa2PuPw UirldpooU paldopP. s,,Cliunwutoo aql ql!m aouPgdwoo JoJ Xllunwwoo aql Sq paMainaJ isanbaJ UOlslnaJ Slgi sPM '£ I 1N3W9031MON )I:)V 1VD1330 AlINnWWO:) ,S -suollPln�a21 d1,IN pauolluawaJoJP aglJo sluawaJlnbaJ agl glint aaurtldwoa ui lou si ❑ ST © uolsinaJ pasgdo.id ag11Pgl anailaq l'ZL PuP'19 `09'69 s1JPd'l -goll,ID I,},'suoilP.in�9a21 cll,aN PPaJ OUTAP.11 'ZI 1N3W9(131M0N)13V HIDIMONJ NOISIA3a'b palordwi a.ir sainlanJls algPJnsui ou IPgi uollPOUIIJaa pup. Jo eaUa.1.inouoo 's1auMO SIJadoJd lP.�3al lP.npiAlpUI 01 33iiou'saAilP.uJa1lP jou011Pnlp,Aa.2uipj- e.SaJ'iaw uaaq anrq suoilrin2aJ dIAN ayi JO Zi I'99 UOIIaas JO SlUawa.Ilnl�a.1 IIP Ipgl UOIIP.IUawnaop apiAOJd asrald 'sa,l si UZ Jo fI I swall Jag11a of JaMSUP ag1J1 Orel❑ SOA ❑ 2)1Jaj1JJ ludfl -u7JJS dJ()w Pa)dopV S2)71 dIVIS do,C]7UnUJWOJ,7 J77U71 difJ7)7,JJT?S JayjO JO) lOOJ 01.10 uPgl aJOw ci u0llr00l ,CUP 1P. aSraJZ)Ui of UOIIP.Aala aaP.JJns aaIPM JP.aS -001 )ql aSnp.J payquapl )illrul..oiJO sPM VII.Is anlloaJJa agl aauls pa.i inaao sPq irgl luawdolOAOP IIPJO IoaJJO anilrinwna aql saop'sz)gJI -UZ ONE] saA ❑ 0lPldpooU JPaS -001 aqI ui luawdolaAap Jaglo JO'Iuowanoiduii 1p,ilurlsgns `uoTlonJlsuoa Mau `llU ,)AIOAU► lsanbaJ uolslnaJ aql sao(i -dZ :sS-empoolJ Inogj!M l I ON ❑ ';0A ❑ Z190J 000'0 uPg1 a.iow Sci Uonmol ,CUP 1P aSraJOUI 01 UOiIPAala aoPJJns JaIPM JPaS -0OI aql asnPa IuawdolaAap aql saop'saA Jl fl I ON a SaA ❑ ZSrmpooU aql ui IuawdolaAap Jaglo Jo'IUawaAo.idtui IPIIUP.Isgns'uoilanJlsuoa Mau'ily -)AIOAUI Isanbai UOTSIAaJ aqI sao(l 'W I :SSP.MPOOLi gllM '01 S1N3WH:)VOM:)N3 03SOdObd'£ -Soua2P aIPIS alm idwddP ayj Xq XumpooU pasinaJ aglJo iPAoJddp, agIJo uoiirluatunoop pup. uoislnaJ .�r.MpooU aylJo Sz)ua. .2P alrls alrl idoiddP ayi �Iu)tiJllou Jallai PJo Cdoo P yaP11P '�a CJl ON © saA ❑ i dl.J ti aql ui 2uilp,diJllJrd salliunwwoo ,cq uoildopP sii Jo ,fPMpooU aql Jano uoiloipsiJnf,)APq aIPIS ayl s,)O(1 6 suoiloipslJnf Iuazw�pp, palaaye pup sJauMo SlaadoJd paiaaJJP iile paiJTlou srq li 1P.g1 SITunwwoa aql Sq luawalPls P Jo SPMpooIJ aqI asinaJ 01 IUaiul s,Sllunwwoa agl .'�uilPls Xliunwwoo aql Sq painglJ1slp aoilou allgnd P JagllaJo ndoo goP11W 1). The community is willing to assume responsibility for ❑ performing L.1 overseeing compliance with the maintenance and operation plans of the (.Vante) 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. Attach operation and maintenance plans 7. REQUESTED RESPONSE FROM FEMA 16. After examining the pertinent NFIP regulations and reviewing the document entitled "Appeals, Revisions, and Amendments to Flood Insurance Maps: A guide for Community Officials," dated January 1990, this request is for a: a. CLOMR A letter from FEMA commenting on whether a proposed project, if built as proposed, would justify a map revision (LOMR or PMR), or proposed hydrology changes (see 44 Ch'R Ch. 1, Parts 60, 65, and 72). b. LOMR A letter from FEMA officially revising the current NFIP map to show changes to floodplains, floodways, or flood elevations. LOMRs typically depict decreased flood hazards. (See 44 CFR Cit. I Parts 60 and 65.) c. PMR A reprinted NFIP map incorporating changes to floodplains, floodways, or flood elevations. Because of the time and cost involved to change, reprint, and redistribute an NFIP map, a PMR is usually processed when a revision reflects increased flood hazards or large -scope changes. (See 44 CFR Ch. I, Parts 60 and 65.) d. Other: Describe 8. FORMS INCLUDED 17. Form 2 entitled, "Certification By Registered Professional Engineer and/or land Surveyor" must be submitted. The following forms should be included with this request if (check the included forms): • Hydrologic analysis for flooding source differs from that used to develop FIRM • hydraulic analysis for riverine flooding differs from that used to develop FIRM • The request is based on updated topographic information or a revised floodplain or floodway delineation is requested • The request involves any type of channel modification • The request involves new bridge or culvert or revised analysis of an existing bridge or culvert • The request involves a new revised levee / floodwal system • The request involves analysis of coastal flooding • The request involves coastal structures credited as providing protection from the 100 -year flood • The request involves an existing, proposed, or modified dam • The request involves structures credited as providing protection from the 100 -year food on an alluvial fan ❑ Hydrologic Analysis Form (Form 3) ❑ Riverine lydraulic Analysis Form (Form 4) ® Riverine /Coastal Mapping Form (Form 5) ❑ Channelization Form (Form 6) ❑ Bridge /Culvert Form (Form 7) ❑ Levee /Floodwall System Analysis Form ( Form 8) ❑ Coastal Analysis Form (Form 9) ❑ Coastal Structures (Form 10) ❑ Dam Form (Form 11) ❑ Alluvial Fan Flooding Form (Form 12) Revision Requestor and Community Official Form Form 1 Page 3 of 4 il. M.4 q ;o q a6ed L w,o3 wjoi lei3ij4o Rllunwwo:) pue jolsonbaa UOISIAaa Mahal s,V W �a,4 aoj lnjdlaq aq Xpw li `paainbaa lou si sa2upga 1paisXgdjo gdpaoologd p g9nogllH :aloN -algpailddvj! `,fpmpooU of saBupga ,2uinoaddp pup lsanbaa uoisinaa Bui2palmoulap suotlaipsianf palaa,Up llu woal saallal gapiip `saSjj ON H saA ❑ 4sailiunwwoo aaglo Sup lapdwi lsanbaa sigl sooU ale(] aweN AliunwwoD Aru 10 leni ; ;o Al!unwwo:);o allil Pue aweN Paluud V.) ♦ 3 -W ui lens } }p Rliunwwo }o a leu6iS C1lun oa agl ui suoilipuoa OuipooU uo uoistnaa ay13o slapdwi ag1'aalsanbaa uotstnaa 0g1 woa•l `spuplsaepun Xliunwwoa aql 1pyl salpaipui aanlpu2iS :aaoN ale(] aweN (uedwo:) -)ossH ialsenbaa uoisinab ;o allll Pue aweN Paluud jelsenbab uoisinaa }o a� &S -*O�Ffl laaaa0a st lsanbaa sTgl jo laoddns uT palltwgns uoilpwaojui lip 1pgl sajuwpui aan1pu2is Sw 1pgl puplsaapun I :aaoN ON ❑ saA 13 "spapzpq pooU 1piaadsjo spaap aql uiglim sa2upga Ipanlpu jo slaajja aql apnlaui of ao aoaaa up laaaaoa of si lsanbaa stg1, "OZ a0 o ❑ saA ❑ -luawdolanap uipldpooU pauupld of pasoddo sp spaap papzpq pooU paUiluapi ui luawdolanap �uijsixa of papzpq pooU aql aanpaa of popualui si pup lUauaq ailgnd ao3 si 1pgl laafoad p ao3 si lsanbaa stq,L '61 ao F�EIFT❑ a.m1ea 9 iS DIP(] 'dX4 wp120ad aaupansul poolA IpuoirN 91 91 tl £I ZI I I OI 6 8 L 9 9 V £ Z I of algpgpd a'ipW FIFIEIFTIEIEIFTIF� ❑ ❑❑❑❑� �fluoaapao�Cauow ll�N114 (IaSO'IONa a- 8VD'1a.LSHW ❑ dSIA ❑ J,NaWAVd ❑ Na9Wf1N 0Nd3 (xoq Duo �;)aqo) d NaWAVd AO (IOI I,I..IW !. "i i� i ?j:� $ :lunowu aaj 1ptliuI ON S saA 0 'papnlaui uaaq spq ,Cao2alpa lsanbaa aluiadoaddp aql aoj aa3 matnaa luiliui wnwTuiw aq L "8I 334 M31A38IVIIINI .6 FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B. Burden No 3067 -0148 FEMA USE ONLY CERTIFICATION BY REGISTERED PROFESSIONAL ENGINEER Expires luly31, 1994 AND /OR LAND SURVEYOR FORM PUBLIC BURDEN DISCLOSURE NOTICE: Public reporting burden for this form is estimated to average . 23 hour 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, E'ederal 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. 1. This certification is in accordance with 44 CFR Ch. I, Section 65.2 2. 1 am licensed with an expertise in gter lexample: water resources (hydrology, hydraulics, sediment transport, interior drainage)* structural, geotechnical, land surveying.] 3. 1 have years experience in the expertise listed above. 4. I have ❑ prepared 0 reviewed the attached supporting data and analyses related to my expertise. 5. 1 © have ❑ have not visited and physically viewed the project. 6. In my opinion, the following analyses and /or designs, is /are being certified: i �l•-,.i r•i :, I,C Arta �Y t 1��.1�., �CfCk 11 '4 �,it l (_- t�>> >'t ... �i J. �., (•. �i..,. 7. Base upon the following review, the modifications in place have been constructed in general accordance with plans and specifications. Basis for above statement: (check all that apply) a. ® Viewed all phases of actual construction. b. ® Compared plans and specifications with as -built survey information. c. © Examined plans and specifications and compared with completed projects. d. ❑ Other I8. All information submitted in support of this request is correct to the best of my knowledge. 1 understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Name: w i I I ,,;,n A, A — I(, ,c ., 11ritle: \' c r - [ , r ; , a, ., (please print or type) (please print or type) Registration No. Z t Expiration Date: I `l State Seal (Optional) *Specify Subdiscipline Note: Insert not applicable (N /A) when statement does not apply. Certitication by Registered Protessional Engineer and /or Land Surveyor Form Form 2 FEDERAL EMERGENCY MANAGEMENT AGENCY O.M.B. Burden No 3067 -0148 FEMA USE ONLY RIVERINE /COASTAL MAPPING FORM Expires July 31, 1994 PUBLIC BURDEN DISCLOSURE NOTIChK Public reporting burden for this form is estimated to average 1.5 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. Community Name: C I_t l 0{ 6-0 j? ,,,_ I Flooding Source: I�ertc„ C�zr1 Project Name /Identifier. 1. MAPPING CHANGES 2. 3. 4. A topographic work map of suitable scale, contour interval, and planimetric definition must be submitted showing (indicate N/A when not applicable): Included A. Revised approximate 100 -year floodplain boundaries (Zone A) ............ ® Yes ❑ No ❑ N/A B. Revised detailed 100- and 500 -year floodplain boundaries ................ ❑ Yes [E No ❑ N/A C. Revised 100 -year floodway boundaries .. ............................... ® Yes ❑ No ❑ N/A D. Location and alignment of all cross sections used in the revised hydraulic model with stationing control indicated ....................... ❑ Yes ❑ No N/A E. Stream alignments, road and dam alignments .......................... ❑ Yes ❑ No ® N/A F. Current community boundaries ........ .. ............................. ❑ Yes El No ® N/A 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 ............................ ........ ❑ Yes ❑ No Ir N/A 11. Tie -ins between the effective and revised 100- and 500 -year floodplains and 100 -year floodway boundaries .................... ..... ❑ Yes ❑ No ❑ N //� 1. The requestor's property boundaries and community easements .......... ❑ Yes ❑ No ® N/A J. The signed certification of a registered professional engineer ............. ❑ Yes ❑ No ® N/A K. location and description of reference marks ............................ ❑ Yes ❑ No Q N/A L. Vertical datum (example: NGVD, NAVD etc.) .......................... ❑ Yes ❑ No ® N/A M. Coastal zone designations tie into adjacent areas not being revised ....... ❑ Yes ❑ No ® N/A N. Location and alignment of all coastal transects used to revise the coastal analyses ..................... ............................... ❑ Yes ❑ No ❑ N/A If any of the items above are marked no or N /A, please explain: F120'\ o-,<p r_�. I s1hed i,c -C A ril ($ 1`(`1`1 �> 'r.ccrrecr . ,_. kc tilt R` -I+ed it ::: ►c r,.<„ sl, <; ,.i� were 1�'e ICO yErlr f (oocl 014 to bob -dctry Uc.L .. I(� iS, What is the source and date of the updated topographic information (example: orthophoto maps, July 1985; field survey, May 1979, beach profiles, June 1987, etc.)? Cit. f 4 "1- It r n< r_u r, y (1c)'12) What is the scale and contour interval of the following workmaps? a. Effective FIS scale Contour interval b. Revision Request I 2e- scale 2' Contour interval NOTE: Revised topographic information must be of equal or greater detail. Attach an annotated FIRM and FBIFM at the scale of the effective [FIRM and FBIFM 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 or adjacent to the area of revision for coastal studies. Attach additional pages if needed. rtmA rorm tSI-t39v, AUG 93 Riverine /Coastal Mapping Form form 5 Page 1 of 3 E jo Z a6ed 5 WJ04 w,o3 6uiddeyy jeiseo:)/auuaAia -algissod sp uoissiwgns Jo a:)uP.APP ui juj sP s ialapnbpuali VW I l y1tM PalPUipiooa ag lsnw suoissrwgns asagl `sWNIAI 2uilppdn .io.i sWHj q lPlt2rp alppdn of pasn aq /SP.w suoissiwgns dpw IPli21(1 IP,1i21(1 ❑ iPnut -W ❑ :uoissrwgns dpw 1plj2ip .io IPnuPW .g :uipldxa `ouJl 0 ❑ sak ❑ Zaunp IPZuo.ij S P.wiad agl Jo loaq aq1 o1 pipMpupl pualxa of palpaui1ap uaaq 1! spy `palpuBisap uaaq si q auoz -n P31 L :uiPldxa `saXjl ON ® sak ❑ .......................... ............................... 4WHIA JO WARA aAT IJatia aq j uo uMOLIS asoq'j o1 pa rP,dwoa uorlP3Ol Sup IP, paspanui .lo pal3lgs sarlPpunoq SPMPOOU agl aAPII 9 Q zasleaaaui 1013igs sigl Sq papudwi aq lli.M ZPgI sa.inlanals ajqu insuf jo iagwnu ayl si jPgM -q -palsanba.i 2u►aq si NWO.1 PJi sai.iPpunoq pooU pasinaa aql 01 suoilaafgo Ou aAPq Xagl 2urlPls s iauMo Spadwd asagl woij saallal g3P11P aspald `saSjl ON® saA ❑ ............................ ............................... �Xjladoad .riagl u0 anpg il!M 1i 1aajta aql pup aspaaaui so ljigs sigl jo pai3ilou uaaq s.iauMo Xpadoad palaajju aql DAL' II -P 'aspal3ui agl .ro3 uoilpupldxa up pup aspa.iaui .io ljigs jo uoilPaol agl an12 aspald `sa.f jl ON E] sa7, ❑ s,Slrunwwoa ao s,.iolsanbai aql uPgl aaglo Sliado.id uo uoilPaol .Sup 1P pasPa.iaui uotlPAala aaPJ.inc ia1PM .rPak -00I aql ao paspa.iaui .ro palJigs uaaq uiPldpooU .iPaS -00I agl sP1I :suoilPAala aaPjxns aalPM maS -OOI Pup. saiappunoH pool�q .g (P,3uo:)) 539NVH:) 9NldddW I 2. EARTH FILL PLACEMENT 1. The till is: ® Existing ❑ Proposed 2 3 I fas fill been/will be placed in the regulatory floodway? ...................... ❑ Yes 0 No If yes, please attach completed Riverine hydraulic Analysis Form. Has fill been/will be placed in floodway fringe (area between the floodway and 100 -year floodplain boundaries)? ....... ............................... ❑ Yes 0 No If yes, then complete A, B, C, and D below. A. Are fill slopes for granular materials steeper than one vertical on one -and- one -half horizontal? ........ ............................... ❑ Yes ❑ No If yes, justify steeper slopes B. Is adequate erosion protection provided for fill slopes exposed to moving flood waters? (Slopes exposed to /lows with velocities of up to 5 feet per second (fps) during the 100 -year flood must, at a minimum, be protected by a cover ofgrass, vines, weeds, or similar vegetation; slopes exposed to flows with velocities greater than 5 fps during the 100 -year flood must, at a minimum, be protected by stone or rock riprap.) ......................................................... I.......... ❑ Yes ❑ No If no, describe erosion protection provided C. Ilas all fill placed in revised 100 -year floodplain been compacted to 95 percent of the maximum density obtainable with the Standard Proctor Test Method or acceptable equivalent method? ❑ Yes ❑ No D. Can structures conceivably be constructed on the fill at anytime in the future? ❑ Yes ❑ No If yes, provide certification of fill compaction (item C. above) by the community's NFIP permit official, a registered professional engineer, or an accredited soils engineer. 4. Has rill been/will be placed in a V -zone? ❑ Yes Q No If yes, is the fill protected from erosion by a flood control structure such as a revetment or seawall? ❑ Yes ❑ No If yes, attach the coastal structures form. Riverine /Coastal Mapping Form Form 5 Page 3 of 3 X449.3 x 448.8 x 44T- ;4 x450.7 W/S 447.5 x 449.9 x 447.7 x 451 x 449.0 x 449.2 11 , ! SCALE IN FEET 0 100 200 400 600 800 1000 1200 1400 1600 CONTOUR INTERVAL 2' SCALE IN METERS 0 2040 80 120 160 200. 240 280 - 320 360 400 THIS MAP COMPLIES WITH NATIONAL GRID LINES AND VALUES ARE BASED z4 MAP ACCURACY STANDARDS BOTH IN ON THE TEXAS STATE COORDINATE "f ✓� " PLAN AND ELEVATION. SYSTEM, NORTH CENTRAL ZONE. NAD '83 PHOTO DATEv FEBRUARY 29. 1992 I The City 1J th A Beaut—�ui Future x 448.9 x449.0 448. -1��6,0 CITY -WIDE MAPPING SYSTEM D 0 "OPOGPAPHIC /BASE MAP SHEET NO-E3 0 *Cc)tjoiTluW5 PIZ)OK To t,ord,rRicTlour !0C `f Ej\R FL,000 F-L(--VA- F joyvs 7 A K1 -A/ r I2{ >rtij l F1r-m m" PATED c�c')"U13t -R i6l 1`1`1 x 448. 4 x 44T- ;4 x450.7 W/S 447.5 x 449.9 x 447.7 x 451 x 449.0 x 449.2 11 , ! SCALE IN FEET 0 100 200 400 600 800 1000 1200 1400 1600 CONTOUR INTERVAL 2' SCALE IN METERS 0 2040 80 120 160 200. 240 280 - 320 360 400 THIS MAP COMPLIES WITH NATIONAL GRID LINES AND VALUES ARE BASED z4 MAP ACCURACY STANDARDS BOTH IN ON THE TEXAS STATE COORDINATE "f ✓� " PLAN AND ELEVATION. SYSTEM, NORTH CENTRAL ZONE. NAD '83 PHOTO DATEv FEBRUARY 29. 1992 I The City 1J th A Beaut—�ui Future x 448.9 x449.0 448. -1��6,0 CITY -WIDE MAPPING SYSTEM D 0 "OPOGPAPHIC /BASE MAP SHEET NO-E3 0 *Cc)tjoiTluW5 PIZ)OK To t,ord,rRicTlour !0C `f Ej\R FL,000 F-L(--VA- F joyvs 7 A K1 -A/ r I2{ >rtij l F1r-m m" PATED c�c')"U13t -R i6l 1`1`1 x 448. 4 x 449. 3 :J T x 448. 8 2 W x 449,0 DENSE TREES 1 ON 50 x451.5 UNDER CONSTRUCTION -- — ` x 4 3 x / x453.5 \ 451 3 \ 1.4 18 1 7 1 \ x453.5 `� I 452.9 — - - - -lx i 48. 7 x4 \ \ UNDER CONSTRUCTION X452-1 (-n x451.1 )451-8 x 49_2 x449.3 x450.4 NEI . 7-- SCALE IN FEET 0 100 200 400 600 800 1000 1200 1400 1600 CONTOUR INTERVAL 2- SCALE IN METERS 0 2040 80 120 160 200 240 280 - 320 360 400 THIS MAP COMPLIES WITH NATIONAL GRID LINES AND VALUES ARE BASED MAP ACCURACY STANDARDS BOTH IN ON THE TEXAS STATE COORDINATE PLAN AND ELEVATION. SYSTEM, NORTH CENTRAL ZONE. N AD '83 1 PHOTO DATE, FEBRUARY 29. 1992 REVISIONS, FEBRUARY 7. 1993 L x 448. J, 450 ✓ .0 �� i 451 26 1 11 1 2 3 4 5 0 7 8 g 7 1 014 1 _ 12 3 2 1 17 16 15 14 1 12 11 1 1 8 x 448.4 ©13 3 ©12 x 51.9 21 `f'I T O * C,uN0iT( ON; PL,— ING Cc)k.,'3. TKUCT -iuN IG'c; Y EAP- FLOOD TE\1`FN i-g'orvi Fl9w, rhrp OmEo PFP�Ii- 15 19`1y, y With A Beau+ {ul Future BIDE MAPPING SYSTEM 'OPOGRAPHIC/BASE MAP SHEET NO-E3 N ZONE X DEFOREST ROAD 11 BRACEBRIDGE )rirton _ DENTON COUNTY DALLAS COUNTY zAk ZONE v� vp a sG iIR LW VE OOD DI ONE X ZO ZO NEE``: TON v NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP and STREET INDEX CITY OF COPPELL, TEXAS DALLAS AND DENTON COUNTIES ONLY PANEL PRINTED COMMUNITY -PANEL NUMBER 480170 0010 E M n a nrinewn, Hr REVISED. APRIL 15,1994 Federal Emergency Management Agency LEGEND SPECIAL FLOOD HAZARD AREAS INUNDATED BY 100 -YEAR FLOOD ZONE A No base flood elevations determined. j ZONE AE Base flood elevations determined. ZONE AH Flood depths of 1 to 3 feet (usually areas of ponding); base flood elevations determined. ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average depths deter- mined. For areas of alluvial fan flooding; velocities also determined: S ZONE A99 To be protected from 100 -year flood by Federal flood protection system under con- struction; no base flood elevations deter- mined. ZONE V Coastal flood with velocity hazard (wave action); no base flood elevations determined. ZONE VE Coastal flood with velocity hazard (wave action); base flood elevations determined. FLOODWAY AREAS IN ZONE AE OTHER FLOOD AREAS ZONE X Areas of 500 -year flood; areas of 100 -year flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 100 -year flood. OTHER AREAS ZONE X Areas determined to be outside 500 -year flood- plain. ZONE D Areas in which flood hazards are undeter- mined. UNDEVELOPED COASTAL BARRIERSt Identified Identified Otherwise 1983 1990 or later Protected Areas f+Coastal barrier areas are normally located within or adjacent to special flood t hazard areas. — — Floodplain Boundary Floodway Boundary t Zone D Boundary Boundary Dividing Special Flood Hazard Zones, and Boundary Dividing Areas of Dif- ferent Coastal Base Flood Elevations Within Special Flood Hazard Zones. 513 Base Flood Elevation Line; Elevation in Feet` Cross Section Line (EL 987) Base Flood Elevation in Feet Where Uniform Within Zone' RM 7x Elevation Reference Mark •M 1.5 River Mile 'Referenced to the National Geodetic Vertical Datum of 1929 NOTES This map is for use in administering the National Flood Insurance Program; it does not necessarily identify all areas subject to flooding, particularly from local drainage sources of small size, or all planimetric features outside Special Flood Hazard Areas. The community map repository should be consulted for possible updated flood hazard information prior to use of this map for property purchase or construction purposes. Coastal base flood elevations apply only landward of 0.0 NGVD, and include the effects of wave action; these elevations may also differ significantly from those developed by the National Weather Service for hurricane evacuation planning. Areas of special flood hazard (100 -year flood) include Zones A, AE, AH, AO, A99, V, and VE. Certain areas not in Special Flood Hazard Areas may be protected by flood control structures._ ELEVATION REFERENCE MARKS REFERENCE ELEVATION MARK IN FT. (NGVD)t DESCRIPTION C RM 196 467.22 Chiseled square on top of whee' of bridge on Denton Tap Road RM 197 483.50 Chiseled square on top of wing bridge on Sandy Lake Road ov RM 198 460.91 Chiseled square on top of whee of bridge on Belt Line Road ovf RM 199 487.17 Chiseled square on top of whee of bridge on Denton Tap Road RM 200 510.71 Chiseled square on top of whee of bridge on Freeport Parkway RM 201 478.80 Standard U.S. Geological Surve set in east end of north abutmei over Denton Creek. 'National Geodetic Vertical Datum of 1929. TON v NATIONAL FLOOD INSURANCE PROGRAM FIRM FLOOD INSURANCE RATE MAP and STREET INDEX CITY OF COPPELL, TEXAS DALLAS AND DENTON COUNTIES ONLY PANEL PRINTED COMMUNITY -PANEL NUMBER 480170 0010 E M n a nrinewn, Hr REVISED. APRIL 15,1994 Federal Emergency Management Agency LEGEND SPECIAL FLOOD HAZARD AREAS INUNDATED BY 100 -YEAR FLOOD ZONE A No base flood elevations determined. j ZONE AE Base flood elevations determined. ZONE AH Flood depths of 1 to 3 feet (usually areas of ponding); base flood elevations determined. ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average depths deter- mined. For areas of alluvial fan flooding; velocities also determined: S ZONE A99 To be protected from 100 -year flood by Federal flood protection system under con- struction; no base flood elevations deter- mined. ZONE V Coastal flood with velocity hazard (wave action); no base flood elevations determined. ZONE VE Coastal flood with velocity hazard (wave action); base flood elevations determined. FLOODWAY AREAS IN ZONE AE OTHER FLOOD AREAS ZONE X Areas of 500 -year flood; areas of 100 -year flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 100 -year flood. OTHER AREAS ZONE X Areas determined to be outside 500 -year flood- plain. ZONE D Areas in which flood hazards are undeter- mined. UNDEVELOPED COASTAL BARRIERSt Identified Identified Otherwise 1983 1990 or later Protected Areas f+Coastal barrier areas are normally located within or adjacent to special flood t hazard areas. — — Floodplain Boundary Floodway Boundary t Zone D Boundary Boundary Dividing Special Flood Hazard Zones, and Boundary Dividing Areas of Dif- ferent Coastal Base Flood Elevations Within Special Flood Hazard Zones. 513 Base Flood Elevation Line; Elevation in Feet` Cross Section Line (EL 987) Base Flood Elevation in Feet Where Uniform Within Zone' RM 7x Elevation Reference Mark •M 1.5 River Mile 'Referenced to the National Geodetic Vertical Datum of 1929 NOTES This map is for use in administering the National Flood Insurance Program; it does not necessarily identify all areas subject to flooding, particularly from local drainage sources of small size, or all planimetric features outside Special Flood Hazard Areas. The community map repository should be consulted for possible updated flood hazard information prior to use of this map for property purchase or construction purposes. Coastal base flood elevations apply only landward of 0.0 NGVD, and include the effects of wave action; these elevations may also differ significantly from those developed by the National Weather Service for hurricane evacuation planning. Areas of special flood hazard (100 -year flood) include Zones A, AE, AH, AO, A99, V, and VE. Certain areas not in Special Flood Hazard Areas may be protected by flood control structures._