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DR1101-CS120322 3 /zz. /► . .M. 1) E. 1 I0 I ►n oe-W+ Ia ke 'Dawn LETTER OF ,� � Innovativ ap _ w TRANSMITTAL F K Practical results Outstanding service ` x 4055 International Plaza, Suite 200 o Fort Worth, Texas 76109. 817- 735 -7300 s fax 817- 735 -7491 wtvw.freese.com PROJECT: North Lake Conservation Pool Project DATE: February 27, 2012 TO: Stephen Brooks, Branch Chief COMPANY: Fort Worth District USACE (CESWF- PER -R) ADDRESS: P.O. Box 17300 Fort Worth, Texas 76102 -0300 PHONE NO.: (817) 886 -1731 FROM: Karl Hoffman CC: File: CPL11192/2.10; Ken Griffin; John Rutledge; Luminant WE ARE SENDING YOU THE FOLLOWING ITEMS: U.S. Army Corps of Engineers, Fort Worth District — Pre - Application Meeting Request Jurisdictional Determination Report for the Proposed North Lake Conservation Pool Project Attached under separate cover via: r Delivery Service and Tracking No. f - Hand Delivery i „ Email _r Other THESE ITEMS ARE TRANSMITTED FOR YOUR: r Use N Review and Comment Information r Approval Distribution to Parties 1- Response r Records Other: REMARKS: Dear Mr. Brooks, Please find attached a Pre - application Meeting Request form as well as a Jurisdictional Determination Report for the proposed North Lake Conservation Pool Project for your review. The City of Coppell, a representative from Luminant, and Freese and Nichols, Inc. would like to meet to discuss Clean Water Act - Section 404 permitting options for the proposed lowering of the North Lake Conservation Pool at your earliest convenience. Please feel free to contact me at kwh @freese.com or (817) 735 -7389 if you have any questions or require additional information. i CEIVED CPL11192 T: \ES \Pre - application Meeting Request \Pre - Application Meeting Request LoT FEB 9 f 201? ,ESt "JF- ;HE=R -P• U.S. Army Corps of Engineers (USACE), Fort Worth District Pre - Application Meeting Request Box 1 Basic Project Information Date: Project Name: North Lake Conservation Pool Project February 27, 2012 City County State Dallas Dallas Texas Total Size of Property in Acres Latitude (NAD 83, DD.ddddd) Longitude (NAD 83, - DD.ddddd) 823 32.942017 - 96.9788375 Box 2 Property Owner Name Email Luminant kyle.ray @luminant.com Mailing Address Phone 500 N. Akard Street (214) 875 -8814 Box 3 Applicant Nape Email Ken Griffin, City of Copped kgriffin @coppelltx.gov Mailing Address Phone 255 East Parkway Blvd, Coppell, TX 75012 (972) 304 -3680 Box 4 Agent Name Email Karl Hoffman kwh @freese.com Mailing Address Phone 4055 International Plaza, Ste. 200, Fort Worth, Texas 76109 (817) 735 -7389 Box 5 Information Required to Accompany Request - check as much information as is available: Project Description: Provide a brief summary of the proposed project including development plans, size in acres, potential impacts to Waters of the U.S., existing land use /cover, etc.: 151 See Box 5 Attachment and attached JD Report. Project Purpose: ® Modify North Lake spillway elevation to 490 feet msl ® Accurate Location Maps (from County map, USGS Quad Sheet, Aerial Photos, etc.) ® Map of the Project Site ® Conceptual Site Plans for the Overall Development ® Approximate acreage of wetland impact: 0 acres. ® Approximate linear feet of stream impact: 0 linear feet. ® Impact Type: (e.g., Forested Wetland, Emergent Wetland, Intermittent Stream, etc.) open water ® Pre - Application Meeting Agenda Box 6 Optional Additional Information: Any information you can provide about the proposal, project site, and /or surrounding area will facilitate a more effective pre - application meeting. Additional information may include, but is not limited to: ® Delineation of the Waters of the U.S. on the Property or a Jurisdictional Determination from the USACE ❑Threatened or Endangered Species Information, and /or Any Coordination With USFWS ❑ Historic Properties Cultural Resources Information, and /or Any Coordination With the SHPO ❑ Conceptual Mitigation Information ® Floodplain Information ® Color Photographs M Aerial Photograph ❑ Other Authorizations Obtained or Required ❑ Other: The applicant will be responsible for taking meeting notes and submitting them to the USACE for review. Copies of this request may be obtained at: http:// www .swf.usace.army.mil /reg_ulatory Please mail this form to: Regulatory Branch (CESWF- PER -R) Fort Worth District U.S. Army Corps of Engineers 819 Taylor Street, Room 3A37 P.O. Box 17300 Fort Worth, Texas 76102 -0300 Agenda North Lake Conservation Pool Project Fort Worth District USACE Pre-Application Meeting Request 1. Introductions 2. Project Description/Background 3. Conservation/Normal Pool elevation (OHWM) 4. Section 404 Permit Options • North Lake Conservation Pool Project Fort Worth District USACE Pre - Application Meeting Request Bo.> 5 Attacri izent: The City of Coppell (City) proposes to lower the normal conservation pool elevation of North Lake from 502 feet rnsl to 490 feet rnsl by modifying the original spillway. Luminant (formerly TXU) constructed the reservoir in 1956/1957 as a cooling water supply for their North Lake Steam Electric Station. While the original spillway was designed at 510 feet msl, the normal pool elevation has been re- established at 502 feet msl following decommission of the power plant in early 2010. For the past two years, water has been allowed to flow through an auxiliary water supply pump station outflow at the reservoir and an ordinary high water mark (OHWM) has become established at that elevation. The City is currently negotiating with the Luminant for purchase of the lake. Modification of the original spillway to lower it to 490 feet msl would involve excavation to 485 feet msl, below the 502 feet msl OHWM (Figures 1, 2, and 3, attached). Rock rip -rap would be placed outside the existing 502 feet msl OHWM for stabilization. The excavation would extend up the bank beyond the OHWM and a pipeline, extending across a portion of the earthen dam, would carry overflow to the existing spillway channel flume that discharges to the South Fork of Grapevine Creek, re- establishing flow to the stream. The earthen dam is vegetated and regularly maintained by mowing. Additional figures can be found in Appendix A of the attached Jurisdictional Determination Report. '� € Y 1 + „: j f'`,'.# 1x `3„ 7` 1 r z^ ` , y-. ) ) / 7 4 , ::`.= , p'- ; , „ KA; 7 ;740 i 7 p „,- ,,::,77,'e''47,'„,,,A?,-,;.-,!7';:it,7,:-'7: .---;'-'77 11- '77:'" . 7- //it ' - ' „/'-.74?-fol'''''',' 1 7',7„;,/7- , 7 --,-. 1 i 3' °rJ 4 j / ' 1`j t .{ .. , 14,4,10-4,1 , ... ` fi / t } . p t , r� ` { '/ ! FC So C 1 s ., 1 ! i • . ,' " 0 a 1 ; 95 0 r il J f ; o O 0 a ` ' A .4 £ t v ® 1i§ A i ] } J / I tee ti r, 4 1 ' i s , . --1 ' 1 1:1 1. ...'. if. ili , ,/,-,, ,,„ ,, ../.4t,,,._,,,,_,- ". D� 'ft " ,-/---- //‘: i '.i , ..0 V - ' '- - A S'' ! ,-,c 1 ' ' \ p ,,,, ‘ ...--- i - i // , ' 0 ',. .,____ r i I - \CP h 1 m O'y c°n z \ ® 1 ‘± • 1 *. r , "it �,.;..e ° ,r=..x;« .n s ;. ,'sue `•? .-. "- CITY OF COPPELL F&N JOB N CP L1 t 192 DATE FEB 2012 r FREESE uttHOL& NORTH LAKE SPILLWAY MO_ DIFICATION SCALE AS SHOWN • • • 4055 m1_rooconol aiezn, s;,ao DESIGhJED Fort Worth, Texas 7 61 09 -489 5 PM. 1 Phone — (817) 735 -7300 �^ I I n Fox — (817) 735 -7491 J {I V ,DRAFTED MLP ! FIGURE zoo FILE -- — —= FIGURE CI Dote: Feb 15. 2012 – 10:08crm U. r,.7 EXIST GRADE APPROX. EL 512.001 �" p "-GRASS ►'• 1 TEMPORARY EXCAVATION �sy 1 MAY REQUIRED ��� ADDITIONAL SHORING RIP RAP EL 500.0 �•�' TO BE EXCAVATED Ca- f1- t 7 - : r 2 : , r I 't -10 DO -1 f� � E,' ,� r� L n,_ ) i y = , ,t r - AFTER COMPLETION, T; 1 � ) ,_ 4 � iv OF REMINDER OF h .._ ' ¢ '{ , ' r 11' j. f =T � " -(..) -(..) 1 L 7 -,- ,1 `, ` w s c �I i. PROJECT > 1 ! l r k L X `' ,. i� 1 i ).- , TEL 490.0-- 3 5 x5 BOX ! ems' Ol j i Y S . i 5 f -D4 t D _ � , 4 CULVER {� . f� 1' t EL 485.0 - S .: P '11 : 4,- 1 Th4 5 ) EL 483.0 1��2 .i2Rr�II�1i4•Pioari� ' • . o EL 480.0 /anteir ' etrol ri 14.00 6.00 10.00 12.00 10.00 6.00 n SECTION AT BOX CULVERT ..12, 1' =20' s i ■ I 1 I 1 i CITY OF COPPELL F &N JOB NCP L11192 D ATE EREESE • FEB 2012 X AS SHOWN 2 I LS NORTH LAKE SPILLWAY MODIFICATION SCALE 4055 InternoUonol P00o, Suite 200 DESIGNED lE PM Fort Worin. Te.os 751 09 -4 09 5 Phone - (717) 735-7300 SECTION AT BOX CULVERT Car - (817) 735 -7a41 ei IDR.4FTED MLP FIGUR l i�- -._. -- _ - _ _- I FIGURE 2.dwa • Date: Feb 15. 2012 - t0:08am User: mip Fife: N: \1rr \Report \FIGURE 2 .dwq EXIST GRADE - GRASS RIP RAP „ E � L 500.0 k�h► 11F: rIJ - k ) - 7 � i � � 1000 r �r ., �- Y <� / 1.i ja 'r {S 1 x t - 1 _ / ri - L� �'�r � : 73 IS -) { j T � 7} t-y bT -y, i _JZ � 1 I EXISTING �� S l { , T` 7 rt r 3 e n i CONCRETE �� t K i : -t ' e` � I' } l -Li f 11+7 r � „, r EL 490.0 Y. ���. CHANNEL �� "� h .75b) �•� 4 46 v S EL 485.07 -� n 41 i 1 v � E 44800 O 41, keW1 5'x5' BOX CULVERT KEEP EXISTING CONCRETE CHANNEL 6.00 10.00 12.00 10.00 6.00 n SECTION AT BOX CULVERT 4 6 1 - CITY OF COPPELL F &N JOB N G °P L11192 DATE FREESE FEB 2012 X I !� NORTH LAKE SPILLWAY MODIFICATION SCALE AS SHOVJN 3 4055 Internat.ond Roza, Site te 200 Fort Worth, Tees 76104 -4895 DESIGNED PM Texas Phan, - (817) °° SECTION AT BOX CULVERT FILE MLP FIGURE TS -7;91 5- 7491 Fa: - (877) DRAFTED qqq _ FIGURE 2.dwq Dote: Feb 15, 2012 - 10:07em User: mIp Foe: N: \we \Report \FIGURE 2 .dwp Jurisdictional Determination Report for the Proposed North Lake Conservation Pool Project Prepared by Freese and Nichols, Inc. for City of Coppell, Texas February, 2012 On January 24, 2012, Karl Hoffman and Michael Votaw of Freese and Nichols, Inc. (FNl) conducted a pedestrian survey of North Lake, located in the City of Dallas, Dallas County, Texas, (Figure 1, Appendix A) with the objective of identifying waters of the U.S. as defined by U.S. Army Corps of Engineers (USACE) regulations (33 CFR Part 328.3) and related guidance. The information gathered from the site visit along with various other sources is presented below. Purpose: The City of Coppell (City) is submitting this Jurisdictional Determination (JD) report for a proposed lowering of the conservation pool elevation of North Lake. Applicant Name Ken Griffin, Director of Engineering and Public Works City of Coppell 255 East Parkway Blvd Coppell, TX 75012 Phone: (972) 304 -3686 Email: kgriffin @coppelltx.gov Methods: Approach A pedestrian survey was conducted at the North Lake dam, spillway, and accessible portions of the reservoir shoreline. Information related to the vegetation, hydrology, and wildlife were observed and noted. Desktop analysis was conducted for areas of the reservoir perimeter that were not accessible to pedestrian or windshield survey. Mapping A variety of sources were used to obtain information regarding waters of the U.S. relative to the existing conditions of North Lake including, the Natural Resources Conservation Service (NRCS, 2012) Web Soil Survey for Dallas County, Texas, United States Geological Survey (USGS) digitized versions of the 7.5 minute topographic maps, USGS National Hydrography Dataset (NHD), as well as a 2010 aerial photograph. The maps included in this report were created using ESRI ArcMap 9.3. Maps of the site are presented in Appendix A T: \ES \JD \Jurisdictional Determination Report for North Lake.docx 1 Results: Vicinity Maps The proposed project area is shown on Figures 1 through 5 (Appendix A). The limits of investigation (LOI) for this JD report are shown on Figure 3 (2010 aerial photograph). Site Description North Lake, an impoundment of the South Fork of Grapevine Creek (SF Grapevine Creek), was constructed in 1956/1957 as a cooling reservoir for Dallas Power and Light Company's (currently Lumina's) North Lake Steam Electric Station. The stream was impounded via an earthen embankment dam (Photo 1) with a flume chute spillway (Photos 2 and 3) at 510 feet msl. A pump station, located on the Elm Fork Trinity River (Elm Fork), provided auxiliary water supply via an outfall at the reservoir at approximately 502.25 feet msl. The electric power plant was decommissioned in early 2010 and since that time the water supply outfall has served as the functional spillway (Photo 4), with lake water occasionally entering the auxiliary water outfall and flowing to the decommissioned pump station and into the Elm Fork. Surface elevation was at approximately 500.5 feet msl, below the newly established OHWM of about 502 feet msl (Photo 5), at the time of the site visit. Hydrologic characterization Streams: Most if not all of SF Grapevine Creek upstream of the North Lake dam was impounded within the original conservation pool at 510 feet msl (Figure 2). No jurisdictional waters of the U.S. were observed to flow into the reservoir. Three sources of storm water from business developments to the west of the reservoir flow into the lake via culverts under South Belt Line Road (Figure 3 and Photos 6, 7, and 8). No other water sources for the reservoir were observed. Wetlands: No wetlands were observed within the LOI. Open Water: One open water body, North Lake, was identified within the LOI (Figures 2 and 3). A USACE Preliminary Jurisdictional Determination Form was completed for this water body and is included in Appendix C. The reservoir originally had a surface area of approximately 823 acres, based on the 510 feet msl elevation of the original spillway, with a capacity of 16,718 acre feet. The current surface area, based on the functional spillway elevation of 502.25 feet msl, is approximately 627 acres with a capacity of about 10,842 acre feet. A new ordinary high water mark (OHWM) was observed at approximately 502 feet msl. The reservoir would be considered a water of the U.S. due to direct connectivity with SF Grapevine Creek, a tributary of Grapevine Creek. Grapevine Creek is a tributary of the Elm Fork Trinity River. The Trinity River is classified as a navigable water body under Section 10 of the Rivers and Harbors Act of 1899 from the point of intersection of Houston, Madison, and Walker counties upstream to Riverside Drive in Fort Worth, Tarrant County, Texas. As such, it T: \ES \JD \Jurisdictional Determination Report for North Lake.docx 2 was concluded that North Lake has direct connectivity with a traditional navigable water body. Thus, North Lake is a jurisdictional water of the U.S. as defined by USACE regulations. 100 -Year Floodplain: The North Lake Conservation Pool is depicted as Zone A (areas with a I% annual chance offlooding and a 26% chance of flooding over the life of a 30 year mortgage. Because detailed analyses are not performed for such areas; no depths or base flood elevations are shown within these zones) by the Federal Emergency Management Agency's (FEMA's) Flood Insurance Rate Maps numbers 4811300155 J and 4811300165 J (FEMA, 2012) (Figure 5). Vegetative Characterization Vegetation on uplands around the reservoir includes honey mesquite (Prosopis glandulosa), salt cedar (Tamarix spp.), willow Baccharis (Baccharis salicifolia), Texas bluebonnet (Lupinus texensis), Bermudagrass (Cynodon dactylon), sunflower (Helianthus annuus), giant ragweed (Ambrosia trifida), Johnsongrass (Sorghum halepense), wild mustard (Brassica juncea), and common ragweed (A. artemisiifolia). Lowering of the surface elevation below the 502 feet msl OHWM was likely caused by recent drought conditions, and limited colonization of the exposed lakebed had occurred (Photo 5). However, beds of wetland vegetation were not observed. Soils Characterization The Natural Resources Conservation Service Web Soil Survey (NRCS, 2012) for Dallas County, Texas shows six soil map units within the LOI. A brief description of each soil map unit follows. Figure 4 shows the location of soil map units within the LOI. None of the mapped soils are classified as hydric in Dallas County by the NRCS. Burleson clay, 0 to 1 percent slopes. Burleson clay is a moderately well drained soil on terraces and formed from clayey alluvium from mixed sources of Pleistocene age. Ferris- Heiden complex, 5 to 12 percent slopes. The Ferris - Heiden complex is well drained soils found on ridges and consists of residuum weathered from calcareous shale (Eagleford shale and Taylor marl formations) of Cretaceous age. Heiden clay, 2 to 5 percent slopes, eroded Heiden clay, eroded is well drained soil on ridges and is a clayey residuum weathered from clayey shale of Eagleford shale and/or Taylor marl. Wilson clay loam, 0 to 1 percent slopes. Wilson clay loam is moderately well drained soil on stream terraces consisting of clayey alluvium derived of mixed Quaternary age sources. Wilson clay loam, 1 to 3 percent slopes. See Wilson clay loam, above. Wilson -Urban land complex, 0 to 2 percent slopes. Wilson -Urban land complex soils are moderately well drained soils located on paleotenaces and derived of clayey alluvium from mixed quaternary age sources. T:\ES\JD\Jurisdictional Determination Report for North Lake.docx 3 Site photographs Site photographs are presented in Appendix E. Aerial photographs Figure 3 (2010 Aerial Photograph) is located in Appendix A. Conclusions: The site investigation revealed that one jurisdictional, open water body, North Lake, exists within the LOI. No other potential jurisdictional waters of the U.S., including streams or wetlands, were observed within the LOI. References: NRCS Web Soil Survey. 2012. http://websoilsurvey.nrcs.usda.gov/app/ FEMA. 2012. Map Service Center. https: / /msc.fema.gov /webapp /wcs/ stores/ servlet /FemaWelcomeView ?storeId= 10001 &cat alogId =10001 &IangId = -1 T:\ES\JD\Jurisdictional Determination Report for North Lake.docx 4 Appendix A — figures T: \ES \JD \Jurisdictional Determination Report for North Lake.docx 5 { Clli a i 1 i t___7_I 11 n ti__ ' I_ � i � r o II 7 4 8:1' • 1 i ■ '-' 1 i t IZ te . t [ l i •.` Lewisviil ∎ _Lr . Flower -Mound i1 ■ I�,�? I L-,S \I; , 1 \ ,_ COUNTY h LiVi'drDG91 C0 13117V 35 \ i RALLIAS COMITY \ ©,0 TARE iAM © +LUITIT 4 'ar,, >iithi ii 1 1 t V --"- _, (/) ! , • \) • 26 / I. _ \ \I \ i ii .. I f I 11� -- ` -„,..„.„: .., „, 5\ 1 ll -or• 6u 1 te rian one' -•r ' on ` ‘ .. / �� I � .A CD,, I 7 \ 1 07 I / ® . 0 0.5 1 2_ CD I CEMil Miles , d FN PROJECT IJO. 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I x at, .20,.,.t- _. ,. 9�r \ °L� • ----- -- —� -- Hackberry - — — - 1 Features i' a r A Dam L r ILe ac � S ; e f �_ • A + Legacy T a m � f L A Functional Spillway LaJolla r I _� i ` i� ya v fin Original Spillway n _.____,I,,,4,..; ib 0 Storm Water Input 0 1,000 2,00 4,000 I Limits of Investigation ,, iFeet r' it 1 'N PR OJE CT NO. 99 N APL 19 j CITY OF COPPELL ■ FILE NAME �+[ G'' I �r r� F 3 F z'zl IMp 6 -[Yfa [-e 6.� w ® E .� II ` �� � �ilp� ,t {� {{ /� 6 �� c R { ��n• l�/� [`!n ( �( ;/ '�535i PL T%1 CENTRAL (F1) 5 f IP ,a suite 2CO I 1 I� I _ / Cd'1 \IV t�I�J' 1 IOf \J11_ I�I_ I I_I ltd /'I, \(� I .5 n 7". DATE EA .D t Lh TX IC d 5 C= DATUM COORDINATE SYSTEM _- -_ _.. _. -.s EFP J v V l�\�I l� ��T C:cC..= G� V ILe fc:l E ItC C lc I (Io,j 20 ___ 1: ,00 0 ask ) = i - /" s , f 4 W -ten '. ± F \ t . - (� [ 1 _ a n y ! "! X 1 1 _ R it , i \ „..- __ — , ......3 o tiro_ i , { ;,. t L { j j j ) ) '''''''''''—') \ I .„ , , 1 , c, i . ',, 1 \ ‘ A. 3 4444.. , 5'1 1 k ( y a �" l ,E '.'•--,'‘;z'7,-.e, \ ,, . / `;?Y _ t. � s" oil } 1 s s... ( ) i, 1 . ,,,sr \\ ,fi — . -.2,�� 42` C''' ...., ,,, • ,.______—___,) ,,,,,),. ''''.-=----/--/„.. f �� c (.\\ r „.„„ ) ( ..." n' 34 ( 41 - \--( i --... _I \\ _, ai • p �1` ° � y 0 1,000 2,000 4,000 ".� -c _ -_ 60 Feet ® Y. i ' 1 C _ Features ®1:Al Urlif 37 : Frio Gil ,la frequently A 55 : : SOvan a l clay, rrv sandy quenllloamy 85 00,8 l to 3 bga silly clay,51012 percent sl �41 :Holden clay, 1103 percent slopes �59:Seagovi0e e stay, occasianxlly flooded per cent slopes G 11 :081,11 fine sandy loam, 115 3 per s 42: Heiden clay, 210 5 Percent 90 a pes, eroded ilaw ( � \ S) \ _ y D12 :AOell fine sandy loam, 2105 percent sbpe S. eroded 43: HOUS1on Black clay, 0081percenl slo pes � �61:Sitawa fine sandy loam, aloe percent slopes c '''' ' >:� � [71 18: Burleson clay. 0101 percent slopes F 44: Houston Black clay, 1 1a 3 percent slopes ® 62: SiS m wa fine sandy loa.210 8 percent slopes, eroded '\ ', * `N 1 19 :Burleson stay. 1 to 3 percent slopes p 46 :Lewisville sit clay, 1 to 3 slopes ® 71 r SUnev clay loam. 3 10 8 percent slopes 34 M20 : Crockett fine sandy loam, 0 to 1 percent slopes 47: Lewisville silty clay, 3 to 5 percent slopes ®` 72: Trinity clay, occasionally flooded V 21 : Crocked fine sandy percent slopes i 48: Lewisville silty clay, 510 8 percent slopes 1, 73: Trinity clay. frequently flooded n d y I oam, 1 Islo � r � e 1 i FA 22 :Crocked fine sandy loam, 2135 percent slopes. eroded M1 49:Lewisville- Urban land complex, 0 la 4 perce n1 slopes 78 :Wilson cby loam, 0 to 1 percent slopes , °' u 9 \ b J1 34:Ferris-Heiden complex, 51012 percent slopes fine sandy loam, 0 to 1 percent slo pes 1: _ 1 79; Wilson cby loam, 1 l0 3 percent slopes - _ � s, x c= 35: FerrisUrban Land complex. 5 to 12 percent slopes k : Ma bank fine sandy loam, 1103 C —� 52 b Y percent slopes 50 Wilson -Urban land complex, 0 �' - _ _ t� 4 '' 36: Fno silty clay, occasions' liy flooded CA 53: Normangee clx loam, 1 to 3 P percent sbpes ' Y percent slopes 14 PROJECT NO " - Worth, TX 761 1 spoil=s (� _!_ COPPELL F�i� N .. BILE NNAME !!33 CCaa AT + LAKE E - �/ OF COY7PELL YP yr� F3 4 • Soils Map �R�6Ja� 7 --- f — E F[GUL' E U. '.1 6 G0 D�IIATE SYSTEM I� r {�] r ` {� ! 1 ` - 4:E STPL X CEIV'R;�Z 425 International 69 S-4535 ti:e200 NORTH LAKE V��1\IV T DEC 6 IOI`',^L DE s ERi1-E(.[��1E !Of''I R s 1 P +T_D Fa:i 0_ - %' DATE C JUNE 1 17-725-7320 LE :EP,P J W �3 LJ 1 i V fMAP C 1:20,000 1 ._ ' ,-- -- j ---- -..„ ..-- -,— ---a-/ ) -- 7•` - ` - ' - ' - a - .T .----, -=-•■•,=.,-- F -. - ' - • i L 1 , r-.., ,,, .....---- \., -,--...., ----- _ r .. , j N., , ___, . ; ,. ., ,- „.,./. , 7- „, k ,______L ____ ,-....... ..._. .---- . . , i „. -,,,„, ----1- , 1 I \ '• ____1 1 1 p , - 1 ...." r _______I ,..... 1..„.,i ?___..:,..„ SL_____r I 1 __I__,_ . ''-'.- ---------/ , ..,,,,_.-- a I t i 1 1- , 7 1 - rr,:= /---. ---/ ,---- 's 1 - 1 ..:,: '\ . , • 1,----- ' --, _1 --------"•,- I? \-------.,/ ;;.; ,,......'>-, 1 " - H - 1.1 :-: .. ---- ._., -- —.1 -1 ,..:, \ 1 ..-- ZONE Y vr'':; l . ,,,.:>-'\',.. , , '• ---_--- -- \ ,---- ( 1 _,, \; ) --- — 1 , ..., ,: •,).,,, \ „.....- \------..„:„:„ c.: , -;:,-- ' P - . ,. .\ i 1_:_-,,,,, '` / , j _, 0NL4 . ,:,,E : -, VI - ,,,-, :.*:. ' 1--.., ...\,... , .-.1 _( _„---*:',..-.=. - . • — . - 1 , 1 -.---..\., (-;„ '..' \-- > ,,A -- // ',,---,: _( '':'' .. i -,'..`; 1 1.. -. 1 - ' ' ‘...„ ,------ 7 D ' ''' ... ., - % 1 ) "--,------:-.'--- ' — "•'= -,-- 7 -•,-,-,,, "- ,- r 1 \ N-,, --;, .=---.-.' ----?,<- ., \--: - \,-, -''),-- - ,:.7,-,„,,, , __-,,,--, , .,2 -,„,--,-„. . \ , \ i -- T _,,,-,..„-- ,:._______ K... -_, .%..._ •..,-- ,.. „,-_,__-,,--r,-- --,,,,, -------, i .,,...--------,_ - -_-__=--.--;, -- ,,, c,,-,--- , ----,--,-,,,.- zok:F AE t - ‘..,•-•,, -) .,--;:.-- T t ---. ', . \ V ------ -- I \ -- i . • - zoNF x , .,.H i P - ' ..1 - '` - ':' :3:-,:3,:,:pie I • - '/- ' \_.; :,... I VI ,""'LS-s_;_i-12,- --_-------i---;„..-"•-• , .. , -. , (4, --( i.-: \I • ,. .4.-Ti ...--'- .. - --- 7:cq.:.: :.: 1 , ; •,__ 1. . - :. \_..-.<„ __I______ ___.______ ______.... __.. -,,,...„ -..„.„ ,-•-• ___,•• • - ! ,,' / \..„.... ..., ,..,;_. /- 1 „. •,-- ., .. ,._ . ,.:‘,..,.., - ) ,, -•-•• . •,' T - ......... -- : • / ,-- ..._. 1- ,, .....„ ...:: • • , .. . - - - .' .,------...„,„.. ''-'-,, , 7,./< /"----' ''' . -• ''''-., - '''''' ..■ ,--___---.----,.s--,. , 4 / r :7 -- - , ..,..1... - -.........__ - :2, c -....__ \ L - -----/ \ , - 1 ' 1..0fla X f \\ \ F ----1 1 i I i zotv x 1 1 1 r-t CITY Ur' DALLAS -tsCIP_ // '1 <---' ZONE A _L • (e ) 1 '-..4 --....„ 1 - -- - ,,. NO.RTI1 f_AKE I ,....,,,,,,,., -- ________.— • ZONE A. N . \ cs., ,‘ 1 . ,- --s- t , 1 , \,...r.,... X--,6„...\,,,,,,..:<':\ $ CO ' J j . • _-_ _ i —3 ' \ / / le . ''') 65 . i -'I NORTH - „IRE \ L, , ------ ( , f I L, i.„ , -) 1 II • / ZONE A ,-... --- • ' ( c---\ \ c i . _ • / I : \ I if \\ ,i \I ---, ,....,,,„_/ CITY OF COPPELL : Q ..--) ---. 1 CITY OF TMLLAS — I - 4y 480170 -; 8017 _.; o 0 \-- \ - '--- --- 1 e ! 9 \ '-- OP ..,.........L..._ j_ CITY OF i DALLAS _ _ _____ _ ' CITY or iiivirqc -----.\\( \ .,... __.CITY OF DAI.I.AS ,,.,, -\\., . -f -....,.... 4F.:0171 ''1••• -,.....\,‹ II .... ,„,..... - \ ZONE X - - _ '------ ----- 11 -- -----._ s ' - '-''',..,. .1 _ 1,500 3,000 i , -----1 6,000 i Feet EN PROJECT ,10 FILE NAME 0 H CP1.11192 Fi;sre 5 - Flon Pznol LLsp LEL- .. , r •-: : i r,.. c [_.-1 7 -=-2'..E. :.. , _ 5 1 ILA- ,[[ I0E, CITY OF COPPELL , ( -‘,..... ;..,) / W r'l DC-WM ' C I ° D. C .J.L2 D ST -, PIA/P;O: TE, 1_ l. 1, o ;OF:LSI:al s055 Interna5sna! FILLa. Suite 200 :ATE CREATED NORTH LAKE JURISTDICTIONAL DETERNIINATION FLO AbrO. TL 721 02-4 ---_—_—_-------,`, EP5 _ __ _ AIDE 2071 517-72,2-72e0 ,,,,,d,,.e f,, ----___s--------. s SC s LE 1_7 [ PAPE° EY Dallas County „ Texas and Incorporated Areas Flood Insurance Rate Map: Panels 155 and 1551 1:20,000 M /23/01 , 1 _ FEA820 , .,_ ------, Appendix B — Photographs T: \ES \JD \Jurisdictional Determination Report for North Lake.docx 6 z a —e r A- • .'„r jC,,, � y` . . / t s . ` Lew , s ,+ S, t � a ,14-N - vi ,'* * t . fir r . ati • . � . # SIR .6 T `S. , • , °t t, . � � 1 ' W l it r 7� � s 11 "a' ; '0'i �. i ,04 -4" . 7 ' - a, �x < * � t� ` t q ".*it' ,.AMC . , 4 r , * r Y a '* t fi*' 44 • • * i b ? 4 � . e. * � �t ti t. s y x ...-`..wSm w - ¢ > t a a : y - • ;' r" _ = r'v 7 = ! s ,./-„ " . � ` i t p Photo 1. North view of the North Lake dam taken fr om t original sp . ' . . ,,, , , ,.. t..r ° .a ".'4, y { � y f � Y � � t` � � �.... '^ ti . j�� :' l"T �` •.� .. . � � a M 1 *'''.° "‘" *-4‘.- N'&''., AA-1,,iffr5,......-- e„ s a ft .a .: iotpif 1": :h"' _ 7 x ) y .# a# `,7 a 1 , A zY : T . . 2. r x : k g. 1'A t a im ams, 4 = �.a w5 .. I _ •'k . �'" a a. �}: a_-r$.N�:� P,ts, os _ .: , . � t 4414 Poto 2. Northeast view of the original North Lake spillway and flume chute. T: \ES \JD \Jurisdictional Determination Re on for f ori{1 I_ake.docx 7 . fi x ,, � < X , °� ���t:�� „• ' l Sx S'4 � S ° b ' : p 'x,e.� , ' � tr. '''‘:: „, ,, f "" Y K' i Photo 3. North (downstream u ) view of North Lake spillway flme chute. 11 _ 1 "i s �� rte. ', ��' 4 #" R Y N �A '. .� . r� M� ._ i1 _. `�k � = t � � � .44' 7.� } Fes` ' lik — Mi‘ 4414,W4 • � R y ' w, } t k Vii �# ,... c.' -.>. 1 I. T , ' + g . 4 tar, y ° .. , d A li. '4 , r � ' k "'''''-'4'; vF k ,. i 3, „ ,! 1. . , -, , ,, , sd ` Photo 4. East view of pwnp station outfall, currently serving as fu nctional spillway at 502.25 feet msl. i : \ES \JD \Jurisdictional Determinationepori for north Lake.doc>; o } �° ,` 3 C i Photo 5. North view of exposed lake bed on east shore of North Lake, below 502 feet ms l OHWNI. 1 I jX 1M1 , ,.M �h 1 �s r - fix; '� s un ,, 1' a q 3 - ,.r a rt z aaaz. �... U s u � #� „._ �. 4, � t" � . _X . �a� "* „ s: � " 1� +:� 3�"3 ET1 . .:� 4alf �_ .�. a � .. ° ' �'�_` Photo 6. youth v of storm water drainage along South Belt Roa i : \�S \JD \Jurisdictional Determination Deport for No Lake.docx 9 r f z F : a£ fr y f � t C f oi ;xyi �� # ' A y "»"� k n* sit ` : a .. • r �y x r &.. ay Sp . is "� z , fit" ' r t 3 ,.-% x t xf " p ,' "'+ q ,. iii' , ii / ' , ' )iti,tfr,-.A:!N‘ i". ' d ; fir ;�" yr , *- !„ :"4:',. P w r w '& h . � x F A, k Plhot:O':7. �$' 3 ` /d .Y R � ,p� �� Y 1 � * # A Ai Y J t� 4 t�; S-. r 8� k'S i °3m � ~ �'. � .J[.!. _ West (upstream) view of storm water drainage from bus district west of North Lake. I , \i' . l a '° a w ► t • t w ,. , ; z � "&S,A`' iC Yt `` Z.. y : a:-Y'- ,- 4 " t '` " ' - 'S.' 4 " . c - + £je4z p tea. � , _ °A a" _ •1 ij!ie *'RP' = '�1�5 Y ..? 9u.. F + c `. a�'3 xi p \ i.. saBk 3 'i. ; I . Photo 8. East (downstream) view of storm w ater culvert to North L ake under Sout Belt Lin Roa T: \ES \JD \Jurisdictional Determination Report for North Lake.docx 10 Appendix C Preliminary Jurisdictional Determirhition Form T:\ES\JD\Jurisdictional Determination Report for North Lake.docx =n k _.C =_r� Li= T PRELTPY)ACbV �� G`� CC � OCR[ L E T E[ rti T CCU [ -D REF ACKCRC C\r . {FFORRfi T ICC\ A. REPORT COLE LETGOCv DATE FOR [ ELrCrLEVA RY JURVED[CT OMAL ETERElKAT COE ,JD : a C ACt EE !`.0 ADDRESS OF ERSOM G EQUE- STIC`G L ° ELll MMARY JD: Ken Griffin, 255 East Parkway Blvd, Coppell, TX 75012 C. DISTRECT OFG=GCE, RLE M A M E , A N * HUM HUMBER: D. PR•JECT LOCATGON(S) AND BACKGROUND GNFORMATION: North Lake (USE THE ATTACHED TABLE TO DOCUMENT MULTIPLE WATERBODIES AT DIFFERENT SITES) State: TX County /parish /borough: Dallas City: Dallas Center coordinates of site (lat/long in degree decimal format): Lat. 32.942017° N, Long. 96.9788375° W. Universal Transverse Mercator: NAD 83 Name of nearest water body: North Lake /South Fork of Grapevine Creek Identify (estimate) amount of waters in the review area: Non - wetland waters: linear feet: . width (ft) and /or 627 acres. Cowardin Class: Lacustrine Stream Flow: N/A - Wetlands: 0 acres. Cowardin Class: N/A Name of any water bodies on the site that have been identified as Section 10 waters: Tidal: N/A Non-Tidal: N/A E. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY): Office (Desk) Determination. Date: X Field Determination. Date(s): January 24, 2012 1. The Corps of Engineers believes that there may be jurisdictional waters of the United States on the subject site, and the permit applicant or other affected party who requested this preliminary JD is hereby advised of his or her option to 1 request and obtain an approved jurisdictional determination (JD) for that site. Nevertheless, the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this instance and at this time. 2. in any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification requiring "pre- construction notification" (PCN), or requests verification for a non-reporting NWP or other general permit, and the per€ [t applicant has not requested an approved JD for the activity, the permit applicant is hereby made aware of the - following: (1) the permit applicant has elected to seek a permit authorization based on a preliminary JD, which does not make an official determination of jurisdictional waters; (2) that the applicant has the option to request an approved JD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an approved JD could possibly result in less compensatory mitigation being required or different special conditions; (3) that the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) that the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has determined to be necessary; (5) that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes the applicant's acceptance of the use of the preliminary_JD, but that either form of JD will be processed as soon as is practicable; (6) accepting a permit authorization (e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the United States, and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative appeal or in any Federal court; and (7) whether the applicant elects to use either an approved JD or a preliminary JD, that JD will be processed as soon as is practicable. Further, an approved JD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331, and that in any administrative appeal, jurisdictional issues can be raised (see 33 C.F.R. 331.5(a)(2)). If, during that administrative appeal, it becomes necessary to make an official determination whether CWA jurisdiction exists over a site, or to provide an official delineation of jurisdictional waters on the site, the Corps will provide an approved JD to accomplish that result, as soon as is practicable. This preliminary JD finds that there "may be" waters of the United States on the subject project site, and identifies all aquatic features on the site that could be affected by the proposed activity, based on the following information: SUPPORTING DATA. Data reviewed for preliminary JD (check all that apply - e checked items should be included in case file and, where checked and requested, appropriately reference sources below):. 7 X Maps, plans, plots or plat submitted by or on behalf of the applicant/consultsnt: JD Report: Figures 1 -5. 1 1 Data sheets prepared /submitted by or on behalf of the applicant/consultant. Office concurs with data sheets/delineation report. 1 !Office does not concur with data sheets/delineation report. Data sheets prepared by the Corps: Corps navigable waters' study: Li D.S. Geological Survey Hydrologic Atlas: 1 1 USES NHD data. 1 1 USGS 8 and 12 digit C-IUC maps. X U.S. Geological Survey map(s). Cite scale & q uad name: 1:20,000 Carrolton, TX. 1X USDA Natural Resources Conservation Service Soil Survey. Citation: NRCS Web Soil Survey. 2012. http: / /websoilsurvey .nres.usda.gov /app /. 1 National wetlands inventory map(s). Cite name: 1 1 State /Local wetland inventory map(s): X1 FEMA/FIRM maps: 48113C0155J and 48113C0165J. 1 1 100 -year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) (X Photographs: >1 Aerial (Name & Date): JD Repot: Figure 3. or IX1 Other (Name & Date): JD Report: Photos 1 -8. 1 1 Previous determination(s). File no. and date of response letter: 1 1 Other. information (please specify): IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later jurisdictional determinations. 7 / I - , r %1d4 to 4' I Signature and date of Signature and date of , 25.11/7_ Regulatory Project Manager person requesting preliminary JD (REQUIRED) (REQUIRED, unless obtaining the signature is impracticable) ( cA7 [nve-e•Jo, CLIaes cf C Veail7Cdi La no'ftu• d:9 Hum,[7ev C[aes FE'S C3(..1_ YCG Aveei 32.9420° 96.97883° Non-section Lacustrine 627 acres 4 ,0 — non-tidal • 4 ti 1 . I x 1 + �LLa � t S f tt / : a � f/ f j/ ` ry s e (( ,, j 1 ' tf : y 1 ' ; tea, ' ' • } III j �; { 1 ;''. ) I _....._, //// , /)/ 1 1 ; ,,//,,,',/ ter` . ){ 1 t f 4 1 � f •:4 i f J O i J ,rrm / � g •• et. J j J / (� ` , ^ ,r f , / ' j :� Wi • • ;1 ( t � J� r , ,/ `-) ,/` ' I �4 1/ • ;�" � � ,✓ 1 { . 0 4 w j ,.., i So �� F<F� #. r 7 , 0' 8S © , 7 / rt ti y 7 > 4 r • = it ' O r i ,,,.. , , ,,,,, ii „, , ( C) ",..,dir, / D /.' T , „ t a a 0,,,,,,,, i 0 1 k ,.. , o cp , . , r X t // /•t:\ \'''.`,,,,,,, ° ''' I t ' , . ; ; • ) • t 44 �k '` , 4 5 " i t i :' ., I ` ■ ( • . • ' S '4 d . • • o 9 \ , X � y 1 a 8 ''''' 4 ' -:..;\ Y >v ' - \ . 06,, , \ \\Lri 1 # & ` ! . ✓ i l� , "7 q 1 , , \ \\,,,,,,,‘ ? / , } CI � 4 s 6 µx I r f 7'1 , \ ' ::: t r ' .i ' 17 ' „,.. \ \ \ F &N JOB NO. CITY OF COPPELL CPL11192 DATE rim F IN I C EESE NORTH LAKE SPILLWAY MODIFICATION SCALE FEB 2012 AS SHOWN 1 4055 International Plaza, Suite 200 DESIGNED 1 Fort Worth, Texas 76109 -4895 PM j Phone — (817) 735 -7300 SITE PLAN DRAFTED i Fax — (817) 735 -7491 M LP FIGURE i FILE FIGURE 2.dw. • Dote: Feb 15, 2012 — 10:08om User: mip File: N: \wr \Report \FIGURE 2.dw0 UV ,N N ( '4. \, EXIST GRADE APPROX. EL 512.001 .•' �1 1 GRASS . ,A" P�� TEMPORARY EXCAVATION \ ij► � ' 1 MAY REQUIRED �S) ADDITIONAL SHORING RIP RAP - \ EL 500.0 • j'' ille TO BE EXCAVATED - 1.7 ) >-' , .;: ,) ,77,- , - 2, „-Z -- );-` 1 -''�" , , ' ? 10 00 s� i 41, , ,� , . ' AFTER COMPLETION .,i - �, , y _ "� % �$ Alt 4 �/ ort. OF REMINDER OF r ) J b- � .a ^ ' �� PROJECT 1 ..X 0- „4 • i0 gtli " , 41 v ,.. - EL 490.0 �. . '6^ 5'x5' BOX' ►•' , v' - , ( ,.- tit � , CULVERT ;� ,, Ill % � EL 485.0 _; ." ,� .�; `se A. Al '1 �; �j4 EL 483.0 tOoP13���1:,10%, '' =•s ib EL 480.0 w /Sr w /��I i..i ot : : . N 14.00 6.00 10.00 12.00 10.00 6.00 n SECTION AT BOX CULVERT 45 1 "•20' r i I 1 i 1 t 1 t 1 1 1 CITY OF COPPELL F &N cos NCP L11192 • FELICHEOE.s NORT H LAKE SPILLWAY MODIFICATION SCALE FEB 2°12 ` AS SHOWN 2 4055 International Plaza, Suite 200 DESIGNED PM 1 Fort Worth, Texas 76109 -4895 i DRAFTE Phone - (817) 735 -7300 SECTION AT BOX CULVERT MLP FIGURE Fax - (817) 735 -7491 I • FILE i N.. FIGURE 2.dwq Dote: Feb 15. 2012 - 10:08om User: mlp File: N: \wr \Report \FIGURE 2.dwq � 1 EXIST GRADE GRASS RIP RAP EL 500.0 • )'',—t1 Y EXISTING •••: T h �` "t"iC p' �`S � ' -� ° i I� l' >3 �r/ /1� CONCRETE � \ �. ess v —"� E L 490 0 Y v � ) - `� r 40 CHANNEL ,• �•� _ rr . ∎ r EL 485.01v ` ma Ie ■0 1 -Jo∎ c E L 4 80.0 �•••� • •k► • 5'x5' BOX CULVERT KEEP EXISTING CONCRETE CHANNEL 6.00 10.00 12.00 10.00 6.00 n SECTION AT BOX CULVERT 412. 1"=20' I CITY OF COPPELL F &N JOB NCP L11192 rim L NORTH LAKE SPILLWAY MODIFICATION SCALE FEB 2012 AS SHOWN 3 4055 International Plaza, Suite 200 DESIGNED PM Fort Worth, Texas 76109 -4895 Phone (717, 5- 49300 SECTION AT BOX CULVERT DRAFTED Fox - (817) 735 - 77491 MLP FIGURE ( FILE FIGURE 2.dwq Dote: Feb 15, 2012 - 10:07om User: mip File: N: \wr \Report \FIGURE 2.0we