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Item 6B - Flood StudyFLOOD STUDY FOR HTeaO at 190 Davis Blvd. y� ....•a sr..•rv'.•.:.•••� EYT �Ad tit ti In Southlake, Texas October 28, 2021 Prepared by: KCE Engineering, LLC M. ammONEW611*1111 Dr. Cuneyt Erbatur, PE, CFM cunevt@kce-eng.com rn z �a z M rn Introduction Flood Study HTeaO — Southlake, TX October 28, 2021 This project is approximately 1.3788-acres located at 190 Davis Blvd in Southlake, Texas, as shown in Appendix A — Figure 1. The Project site is currently undeveloped with a Sonic site to the north, single-family residential properties to the east across Davis Blvd., and undeveloped land to the south. Tributary BB-9 flows from north to south along the western side of the property. Per FIRM 48439C0090L, revised March 21, 2019, there is FEMA floodplain (Zone AE) within the Project site. The Project is planned to be developed as an HTeaO commercial property with the construction plans by Bowman Consulting. The topographic survey was performed by Spooner & Associates and dated July 21, 2021. The purpose of the flood study is to use the topographic survey data provided by Spooner & Associates to determine the corrected effective 100-year floodplain within the limits of the Project site. It is also to determine if the proposed Project will cause any adverse hydrologic impacts to the adjacent properties. It is the intent of the Project for all work to remain outside of the limits of the corrected effective 100-year floodplain of Tributary BB-9. Overall Hydrologic Analysis KCE requested the effective models for Tributary BB-9 from FEMA and received a PDF of the HEC- 2 output for Tributary BB-9 from lettered cross -sections A-G. In addition, KCE also received the effective models and shapefiles from the upstream LOMR 19-06-1227P by Boyd Hydrology, PLLC which became effective 4/27/2020. Since FEMA did not provide KCE with any effective hydrologic models for the watershed of Tributary BB-9, KCE instead created a HEC-HMS model to determine if the proposed Project would have an adverse hydrologic impact to other properties. KCE used the onsite topographic survey data provided by Spooner & Associates as well as the 2019 USGS lidar contour data to delineate the watershed to the downstream side of the Project site. Based on the delineations by KCE, the watershed to the downstream side of the Project is approximately 808-acres, so KCE selected the SCS Unit Hydrograph method as the most appropriate method to determine the peak discharges at the junctions. Refer to Appendix A — Figure 2 for the drainage area map. The SCS curve number (CN) represents the runoff potential of a given area with the higher the CN, the greater the runoff potential. The curve numbers are determined based on hydrologic soil type and land use. For this project, KCE determined the CN based on the hydrologic soils type from the USDA Web Soil Survey and the existing land use from the NCTCOG land use data, edited to reflect more recent developments. Refer to Appendix A — Figure 2 for the existing land uses, and the soils map is shown in Appendix A— Figure 3. Page 12 k -,I Flood Study HTeaO — Southlake, TX October 28, 2021 The time of concentration is defined as the time required for water to flow from the most hydraulically remote point of the basin to the design point of interest. The path of travel is divided into sheet flow, shallow concentrated flow, and open channel flow (or closed storm system flow). The times of concentration for the subbasins were calculated based on the SCS publication Technical Release 55 (TR-55) standard engineering practices. The flowpaths used are shown in Appendix A — Figure 2. The detailed time of concentration calculations are shown in Appendix C. Based on TR-55, the watershed lag time was calculated at 60% of the total time of concentration for each drainage basin. The watershed lag time is the time from the center of mass of excess rainfall to the peak rate of storm water runoff. Tables 1 and 2 shows the existing and proposed hydrologic parameters, respectively. Table 1— Existing Hydrologic Parameters Existing Sub Basin DA (acres) DA (Sq.Mi.) Lag Time (min) CN A 0.915 0.001430 7.6 68 OS-1 807.073 1.261052 39.9 82 Table 2 — Proposed Hydrologic Parameters Proposed Sub Basin DA (acres) DA (Sq.Mi.) Lag Time (min) CN A 0.915 0.001430 1.8 93 OS-1 807.073 1.261052 39.9 82 KCE used these parameters and the Atlas 14 rainfall data to create a hydrologic model for the Tributary BB-9 watershed to the downstream side of the Project site in the United States Army Corps of Engineers HEC-HMS (version 4.8) program to determine the peak discharges forthe 100- and 2-year storm events. Table 3 below shows the results summary. Page 13 k -,I Table 3 — Results Summary Flood Study HTeaO — Southlake, TX October 28, 2021 Hydrologic 100-yr Peak Discharge (cfs) 2-yr Peak Discharge (cfs) Junction Existing Proposed Prop - Exist Existing Proposed Prop - Exist OS-1 2,547 2,547 0 873 873 0 A 5 11 5 1 5 4 Junction-1 2,548 2,548 0 873 873 0 Based on the results of the HEC-HMS model, although there is a slight increase in peak runoff for subbasin A due to the proposed development, the net impact at the downstream junction, Junction-1, is no change to the peak discharge for either flow event. Therefore, the proposed Project should be able to develop as planned with no detention. Per the effective FIS data, the effective 100-year peak discharge at the corporate limits of the City of Southlake approximately 3,000-ft downstream of the Project site is 2,650 cfs, so the watershed peak discharge of 2,548 cfs at Junction-1 is reasonable. Overall Hydraulic Analysis KCE requested the effective models for Tributary BB-9 from FEMA and received a PDF of the HEC- K output for Tributary BB-9 from lettered cross -sections A-G. In addition, KCE also received the effective models and shapefiles from the upstream LOMR 19-06-1227P by Boyd Hydrology, PLLC which became effective 4/27/2020. After opening the provided models and shapefiles from FEMA, KCE determined that the current effective FEMA floodplain through the Project site appears to have been moved or shifted from the actual location of the creek. Since the provided models are not in the correct location, KCE created a hydraulic model of Tributary BB-9 through the Project site. KCE used a combination of the onsite topographic survey data provided by Spooner & Associates within the Project boundaries and the USGS 2019 contour data for the offsite portions to create an existing terrain. KCE determined the Manning's n-values based on aerial images of the site and from the effective model. The downstream limits were set as a known water surface elevations from the FIS effective lettered cross-section E. The United States Army Corps of Engineers HEC-RAS (version 6.0) program was used to calculate the WSEL and velocity within the limits of the study. Table 4 below displays the HEC-RAS results from the FIS effective 100-year peak discharges through the Project site. The corrected existing floodplain is shown in Appendix A — Figure 4. Refer to Appendix D for the HEC-RAS profile and cross -sections for the FEMA storm events for Tributary BB-9. Page 14 Flood Study HTeaO — Southlake, TX October 28, 2021 Table 4 —100-Year HEC-RAS Results Tributary BB-9 100-yr Results River Station Q Total (cfs) Existing WSEL (ft) Velocity (fps) Valley Storage (acre-ft) 7499 2650 639.91 3.82 16.25 7305 2650 639.24 5.49 12.7 7222 2650 638.94 6.17 11.28 7091 2650 638.28 6.82 9.16 6928 2650 637.53 6.35 6.61 6774 2650 636.78 6.26 4.24 6674 2650 636.35 5.37 2.49 6490 2650 635.75 5.31 0 Once KCE provided Bowman Consulting with the corrected existing 100-year floodplain through the Project site, the proposed site and grading plans were adjusted to remain outside of the 100- year floodplain. The FFE of the building was set at 651.00 which is more than 11-ft above the adjacent 100-year WSEL of 639.24. Page 15 rn Z Z rn M Z Conclusions Flood Study HTeaO — Southlake, TX October 28, 2021 This flood study was performed to determine if the proposed Project can be constructed as planned without causing an adverse hydrologic or hydraulic impact to other properties per the City of Southlake definition. Based on the results of the hydrologic analysis, there are minor increases in the onsite peak discharge as a result of the Project but the net impact to the watershed is no change to the peak discharge of Tributary BB-9 due to the timing of the contributing hydrographs. KCE delineated the corrected effective 100-year floodplain through the Project site using the effective FIS peak discharges. All proposed onsite improvements were designed by Bowman Consulting to remain outside of the corrected existing 100-year floodplain. The proposed HE of the onsite building is more than 11-ft above the adjacent 100-year WSEL. Therefore, the Project should be able to be constructed as planned with no onsite detention and no floodplain reclamation. If you have any questions or comments, please feel free to call. Sincerely, Dr. Cuneyt Erbatur, PE, CFM, LEED AP Principal 15 KCE Engineering, LLC a Texas limited liability corporation TBPE Reg. No. F-16940 Page 16 rn Z Z rn M Z Appendices Appendix A — Exhibits Flood Study HTeaO — Southlake, TX October 28, 2021 T I ' 11 y k ■ ■, ,. - Ilk . r _ ■ _ S 61r t4 • wl i , e r VL 4- V. `•� �. ,�- ''� r- � �, '\S 3 � _ifs a i -�■r�, 0f .i -.� ',ii i t. 1� •�f - - • � J14�*� �{ - - i . - ... .. - V Is IL Wv . ,f. - '�-. r .. • t •- y 'i ^ _ _ w. f` may , _ _ _ . �7Rr � ,i F *• �, �' '*' -� � � .� � �' � ��TT _ ' " r .4+ # _ � rf T,.r _ _ � �Y � , y' „4•t • ! L AP ♦ Y f ♦ • • r 'i - ..Yc'+-' i.y1.J� , y _ jr 4L jig '10 J1 _.:. 4 ^ L' sl Ir '`F > • % II k -_ ; F�rri•rT� T'3 '`r- a i �'. .;t ... - r" , xA= f, s M + << o e IT " ? 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I- AI'll'!!' 11I1 T AL 4 20 e II I091co LIL CD LU Cn 638 n 637 y - - _ pag4 Lv 1'' S$5 i' Z l ate;' r Vqt m4rim 1p co V I' I -'r L V -.(0 - - (� t LO i i - - 692 t, - f ' _' co LL La d PL oo � ,� I + � ' .•,�,?t�- �' (r/, ,fir �_' , • ' � �' COUNTRY MOSS WO qr 6 +_ 4 4 �° * / (� /jig y Legendi KCE RAS XS m �� RAS Creek CL AL Sh 11��, 6674 ��; Survey_Contours 7 KCE_ Corrected _100yr_F _ w y,�ML _- - USGS 2019 Contours N `' t� - a '676 , i -low i _ _ - Parcels --------------- /--do 63a 629 �� - - *' z - _ FE MA Zone 632 r 6,1 _ . `___ _,6 AE 6490 63 ; ,. s ' I .�� P` FLOODWAY MIL iL- ( � - 'Elm ;� W � r Note: Flood lain delineation isbased on USGS 2019 lidar contours with a vertical datum of NAVD88, obtained from TNRIS, and surveyProvided by Spooner and Associates. `Ol (o %, P. --- �' 500-yr FIGURE PREPARED BY:OCE CHECKED BY: KME eaO - Southlake FLOODPLAIN MAP DATE: 10/27/2021 PROJECT #:432 Reg. #: F-16940 rn Z Z rn M Z Appendix B — FIS Data Flood Study HTeaO — Southlake, TX October 28, 2021 TABLE 4 - SUMMARY OF DISCHARGES (continued) PEAK DISCHARGES (cfs) DRAINAGE 10°/° 2°/ 1°/ 0 FLOODING SOURCE o o Redelineation Detailed Studv Streams TRIBUTARY BB-7 At Eagle Bend TRIBUTARY BB-8 Upstream of confluence with Big Bear Creek Upstream of left bank tributary 500 feet upstream of Continental Boulevard 0.32 ** ** 987 ** 2.25 2,550 3,500 3,950 5,000 1.22 1,450 2,000 2,250 2,900 TRIBUTARY BB-9 Upstream of confluence with Big Bear 1.97 1,950 2,750 3,100 3,950 Creek At Southlake corporate limits 1.33 1,700 2,350 2,650 3,400 TRIBUTARY BB-10 At confluence with Big Bear Creek ** Downstream of confluence of left bank tributary (approximately 1,900 feet ** downstream of the Johnson Road crossing Upstream of confluence of left bank tributary approximately 1,900 feet ** downstream of the Johnson Road crossing TRIBUTARY BB- 11 3,050 4,250 4,800 6,100 2,500 3,450 3,900 4,950 1,450 2,000 2,250 2,850 At confluence with Big Bear Creek 1.18 2,700 TRIBUTARY BB-12 At confluence with Big Bear Creek ** At FM 1709 TRIBUTARY BB-13 Approximately 1,500 feet upstream of 0.45 its confluence with Big Bear Creek UNNAMED TRIBUTARY TO BIG BEAR CREEK Approximately 800 feet upstream of 0.35 Keller -Hicks Road STREAM BFC-1 2,400 2,000 755 3,375 4,302 5,225 3,300 3,700 4,600 2,700 3,000 3,750 1,105 1,276 1,651 ** ** At confluence with Big Fossil Creek 2.34 4,070 At North Beach Street 2.26 4,070 At Western Center Boulevard 2.00 3,830 521 ** 5,420 6,010 7,320 5,410 6,000 7,310 5,080 5,630 6,860 =11 650 •"1 630 620 610 o11 590 0 1000 2000 3000 4000 5000 6000 7000 STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH BIG BEAR CREEK LEGEND 0.2% ANNUAL CHANCE FLOOD ------- 1 % ANNUAL CHANCE FLOOD - - 2% ANNUAL CHANCE FLOOD - - - - - - - - - 10%ANNUAL CHANCE FLOOD STREAM BED CROSS SECTION LOCATION 8000 9000 10000 660 w o� m m O � � 0- Q 650 L m O O r' 640 630 U 620 w c� Q ~ X w Q 610 Q zo z � � O U C) ry- w 0 � Q v z c � o � Q w � Q w w w 23P rn Z Z rn M Z Appendix C — Hydrologic Data Flood Study HTeaO — Southlake, TX October 28, 2021 9/28/21, 3:06 PM Precipitation Frequency Data Server NOAA Atlas 14, Volume 11, Version 2 Location name: Roanoke, Texas, USA*��`" Latitude: 32.9522°, Longitude:-97.1965° Elevation: 705.85 ft** * source: ESRI Maps "R t4 ^► ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Sandra Pavlovic, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Orlan Wilhite NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Average recurrence interval (years) Duration �� 1 2 5 10 25 50 100 200 500 1000 5-min 0.409 0.477 0.589 0.681 0.807 0.902 0.999 1.10 1.23 1.34 (0.310-0.540) (0.365-0.626) (0.449-0.774) (0.511-0.905) (0.586-1.10) (0.638-1.26) (0.689-1.42) (0.739-1.60) (0.802-1.85) F847-2.04) 10-min 0.655 0.765 0.944 1.09 1.30 1.45 1.61 F1�76 (0.496-0.865) (0.585-1.00) (0.719-1.24) (0.820-1.45) (0.942-1.77) (1.03-2.02) (1.11-2.29) 2.56) F1.272.94) F17.33.23) 15-min 0.814 0.950 1.18 1.36 1.61 1.80 1.98 2.17 2.44 2.65 (0.616-1.08) (0.729-1.25) (0.898-1.55) (1.02-1.81) (1.17-2.19) (1.27-2.50) (1.37-2.82) (1.46-3.17) (1.59-3.65) (1.67-4.04) 30-min 1.13 1.32 1.63 1.88 2.22 2.47 2.73 3.00 3.37 3.66 (0.857-1.49) (1.01-1.73) (1.24-2.14) (1.41-2.50) (1.61-3.01) (1.75-3.43) F 88-3.88) (2.02-4.36) (2.19-5.05) (2.32-5.60) 60-min 1.47 1.72 2.12 2.90 3.24 3.59 3.97 4.48 4.89 (1.11-1.94) (1.31-2.25) (1.61-2.78) E(i.T83.2:6) (2.10-3.94) (2.29-4.51) (2.48-5.11) F(2.67-5.77) F91-6.71) (3.09-7.47) 2-hr 1.80 2.12 2.64 3.08 3.69 4.16 4.64 517 5.91 6.49 (1.38-2.35) (1.63-2.74) (2.03-3.43) (2.33-4.05) (2.70-4.96) (2.96-5.72) (3.23-6.53) FC3.56-7.43) (3.86-8.72) (4.14-9.78) 3-hr 1 1.99 2.37 2.97 3.48 4.19 4.75 5.34 5.97 6.87 7.58 ( .53-2.59) (1.83-3.04) (2.29-3.83) (2.65-4.54) (3.09-5.60) (3.41-6.49) (3.73-7.45) (4.06-8.51) (4.51-10.1) (4.85-11.3) 6-hr 2.36 2.82 3.56 4.20 5.10 5.81 =6�5 7.39 8.54 9.47(1.83-3.02) (2.20-3.57) (2.78-4.54) (3.22-5.42) (3.79-6.74) (4.20-7.84) (5.64-12.3) (6.09-13.9) F12-hr 2.77 3.33 4.22 4.98 6.06 6.92 =(5.5. 8.80 10.2 ) 11.3 (2.17-3.52) (2.62-4.17) (3.32-5.33) (3.87-6.37) (4.55-7.92) (5.04-9.22) (6.07-12.2) (6.77-14.5 (7.31-16.4) 24-hr 3.24 3.90 4.93 =(4.5�7.36) 7.09 8.09 9.14 0.3 11.9 13.2 (2.56-4.06) (3.09-4.82) (3.92-6.16) (5.36-9.14) (5.94-10.6) (6.53-12.3) FL7.115-14.1) (7.97-16.7) (8.59-18.8) 2-day 3.76 4.50 5.67 6.68 8.12 9.27 10.5 11.8 13.7 =(9.951 (3.00-4.66) (3.60-5.50) (4.54-6.99) (5.28-8.34) (6.20-10.3) (6.87-12.0) (7.56-13.9) (8.27-15.9) (9.22-18.9) 3-day 4.09 4.89 6.15 7.25 8.81 10.1 =(8.245.0) 12.8 14.9 16.5 (3.28-5.04) (3.94-5.94) (4.96-7.54) (5.76-8.99) (6.76-11.1) (7.50-13.0) F(9.02-17.1) (10.1-20.4) (10.9-23.0) 4-day 4.32 5.18 6.52 7.68 9.34 10.7 12.1 13.6 15.8 17.6 (3.48-5.30) (4.18-6.25) (5.28-7.94) (6.13-9.47) (7.20-11.8) (7.99-13.7) F(879-15.8) 1 (10.8-21.6) 11 (11.6-24.4) 7-day 4.80 5.78 7.30 8.62 10.5 12.1 13.7 15.5 18.0 20.0 (3.90-5.84) (4.70-6.90) (5.96-8.81) (6.94-10.5) (8.18-13.1) (9.09-15.3) (10.0-17.7) 1 (11.0-20.3) 11 (12.3-24.2) (13.3-27.4) 10-day 5.23 6.29 7.95 9.40 11.5 13.1 ) 14.9 ) ( 16.8 ) ( 19.6 21.8 (4.27-6 31) (5.15-7.48) (6.53-9.55) (7.60-11.4) (8.95-14.2) (9.94-16.6 (10.9-19.1 12.0-22.0 13.4-26.1) (14.5-29.6) 20-day 6.75 7.98 9.95 11.6 14.0 15.8 17.8 19.9 23.0 25.5 (5.57-8.05) (6.63-9.42) (8.26-11.8) (9.49-14.0) (11.0-17.1) (12.1-19.6) (13.1-22.5) (14.3-25.6) (15.9-30.3) (17.1-34.1) 30-day 8.03 9.41 11.6 13.5 16.1 18.1 20.2 22.5 25.8 28.6 (6.67-9.52) (7.88-11.1) (9.72-13.7) (11.1-16.1) (12.7-19.5) (13.8-22.3) (15.0-25.3) (16.3-28.7) (17.9-33.7) (19.2-37.8) [�-:d:a7y 9.83 11.5 14.1 16.4 19.5 21.9 24.4 27.1 30.8 33.8 (8.21-11.6) (9.66-13.4) (11.9-16.6) (13.5-19.4) (15.5-23.5) (16.9-26.8) (18.3-30.4) (19.7-34.3) (21.5-39.8) (22.9-44.4) 60-day 11.4 16.4 19.0 22.7 25.5 28.5 31.535.6 38.8 (9.58-13.4) [;%;] (13.8-19.1) (15.8-22.4) (18.1-27.2) (19.8-31.1) (21.4-35.2) (22.9-39.6) (24.9-45.7) (26.3-50.6) Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. https://hdsc. nws. noaa. gov/hdsc/pfds/pfds_printpage.html?lat=32.9522&Ion=-97.1965&data=depth&units=english&series=pds 1 /4 9/28/21, 3:06 PM Precipitation Frequency Data Server Back to Top PF graphical Average recurrence interval {years} — 1 2 — 5 — 1Q 25 50 100 200 540 1400 Duration — 5-min — 2-day — 10-mtn — 3-day 15-mtn — 4-day — 30-min — 7-day — 60-min — 1 "ay — 2fir — 20-day — 3fir — 30--day — 6-I1r — 45-day — 12-hr — 60-day 24-hr Back to Top Maps & aerials Small scale terrain "kylestiake rt E S}out Keller Pk-- — :ya Soutnlake BIwd + rlh Ik ete r r 3km 2mi? Large scale terrain https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=32.9522&Ion=-97.1965&data=depth&units=english&series=pds 2/4 9/28/21, 3:06 PM Precipitation Frequency Data Server i Wichita falls Denton I# Plano Fort Worth Arlington Dallas :ne 100km 60mi Large scale map Wichita FallG Fort Plano ll■ r■r 0 100km 60mi aeo c�ng� + Back to Top https://hdsc. nws. noaa. gov/hdsc/pfds/pfds_printpage.html?lat=32.9522&Ion=-97.1965&data=depth&units=english&series=pds 3/4 9/28/21, 3:06 PM Precipitation Frequency Data Server US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Questions?: HDSC.Questions@noaa.gov Disclaimer https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=32.9522&Ion=-97.1965&data=depth&units=english&series=pds 4/4 EXISTING TRAVEL TIME CALCULATIONS Basin Data Overland Flow Shallow Concentrated Flow Channel/Street Flow Basin Name Calculated Longest Flowpath (ft) Length (ft) lope (ft/ft) Surface Type Manning's n To (min) Length (ft) Slope (ft/ft) Surface Type K Ts (min) 1 Length (ft) Slope (ft/ft) Manning's n Area (ft2) WP (ft) Channel Velocity (f/s) Tx (min) Time of Cone. Cale. (min) Lag Time (min) (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) X-Section Type (15) (16) (17) (19) (20) (21) A 365 100 0.030 Dense —Grass 0.240 11.44 265 0.045 unpaved 16.1 1.29 0 0.050 Channel 3.00 0.00 Total To (min)= 11.44 Total Ts (min)= 1.29 Total Tn (min)= 0.00 12.73 7.6 OS-1 10819 100 0.020 Dense —Grass 0.240 13.45 320 0.063 unpaved 16.1 1.32 1177 0.050 Channel 3.00 6.54 2156 0.013 Conduit 6.00 5.99 7066 0.050 Channel 3.00 39.26 Total To (min)= 13.45 Total Ts (min)= 1.32 Total Tn (min)= 51.78 66.56 39.9 Lag_Time_calculations Existing CN Calculations FID Label 307 A 309 A Acres CATEGORY 0.098021 Open Space 0.320519 Open Space HYDRO A B 39 61 3.822819 19.55166 306 A 0.130686 Open Space C 74 9.670764 308 A 0.366179 Open Space D 80 29.29432 Sub -Total A 191 OS-1 193 OS-1 0.915405 jIML 0.50641 Commercial 0.0150403 Commercial A A 68 89 89 62.33956 45.07049 1.338587 195 OS-1 0.117734 Commercial A 89 10.47833 200 OS-1 0.131635 Commercial A 89 11.71552 205 OS-1 0.485397 Commercial B 92 44.65652 213 OS-1 0.484185 Commercial B 92 44.54502 214 OS-1 0.395292 Commercial B 92 36.36686 219 OS-1 0.0025773 Commercial B 92 0.237112 220 OS-1 0.118572 Commercial B 92 10.90862 300 OS-1 0.0609226 Commercial B 92 5.604879 190 OS-1 0.890755 Commercial C 94 83.73097 192 OS-1 2.42296 Commercial C 94 227.7582 194 OS-1 2.885 Commercial C 94 271.19 196 OS-1 0.000721 Commercial C 94 0.067774 197 OS-1 2.14727 Commercial C 94 201.8434 199 OS-1 2.56355 Commercial C 94 240.9737 201 OS-1 1.19188 Commercial C 94 112.0367 202 OS-1 2.12288 Commercial C 94 199.5507 203 OS-1 0.466663 Commercial C 94 43.86632 207 OS-1 0.760636 Commercial C 94 71.49978 208 OS-1 2.0053999 Commercial C 94 188.5076 210 OS-1 0.248666 Commercial C 94 23.3746 215 OS-1 1.4568599 Commercial C 94 136.9448 217 OS-1 0.214247 Commercial C 94 20.13922 222 OS-1 3.4768801 Commercial C 94 326.8267 225 OS-1 0.128841 Commercial C 94 12.11105 226 OS-1 3.6589401 Commercial C 94 343.9404 253 OS-1 4.13831 Commercial C 94 389.0011 298 OS-1 0.412731 Commercial C 94 38.79671 305 OS-1 189 OS-1 198 OS-1 _ 0.551678 Commercial _ 2.9697399 Commercial 2.17398 Commercial C D D 94 95 95 51.85773 282.1253 206.5281 204 OS-1 0.527528 Commercial D 95 50.11516 206 OS-1 9.4230804 Commercial D 95 895.1926 209 OS-1 10.4863005 Commercial D 95 996.1985 211 OS-1 0.703521 Commercial D 95 66.8345 212 OS-1 1.27714 Commercial D 95 121.3283 216 OS-1 0.93374 Commercial D 95 88.7053 218 OS-1 0.0712725 Commercial D 95 6.770888 Existing CN Calculations 221 Label Acres OS-1 0.504011 CATEGORYFID Commercial D•O D 95 47.88105 223 OS-1 0.0238991 Commercial D 95 2.270415 224 OS-1 0.690119 Commercial D 95 65.56131 227 OS-1 0.582004 Commercial D 95 55.29038 252 OS-1 1.37475 Commercial D 95 130.6013 254 OS-1 0.258911 Commercial D 95 24.59655 299 OS-1 0.559841 Commercial D 95 53.1849 184 OS-1 5.3989301 Mobile home B 85 458.9091 188 OS-1 8.0878801 Mobile home B 85 687.4698 180 OS-1 2.1276901 Mobile home C 90 191.4921 185 OS-1 1.32226 Mobile home C 90 119.0034 186 OS-1 5.6022201 Mobile home C 90 504.1998 179 OS-1 0.0247754 Mobile home D 92 2.279337 187 OS-1 1.7370501 Mobile home D 92 159.8086 35 OS-1 0.945823 Open Space A 39 36.8871 242 OS-1 1.42024 Open Space A 39 55.38936 246 OS-1 2.0357101 Open Space A 39 79.39269 257 OS-1 0.10206 Open Space B 61 6.22566 258 OS-1 0.0962874 Open Space B 61 5.873531 259 OS-1 IF 0.119923 Open Space B 61 7.315303 260 261 273 OS-1 OS-1 I OS-1 0.149101 0.0237148 0.306096 Open Space Open Space Open Space B B B 61 61 61 9.095161 1.446603 18.67186 276 OS-1 0.326128 Open Space B 61 19.89381 287 OS-1 0.133697 Open Space B 61 8.155517 34 OS-1 0.603221 Open Space C 74 44.63835 241 OS-1 1.13085 Open Space C 74 83.6829 245 OS-1 1.5083801 Open Space C 74 111.6201 264 OS-1 9.7018404 Open Space C 74 717.9362 267 OS-1 1.50976 Open Space C 74 111.7222 269 OS-1 0.611525 Open Space C 74 45.25285 270 OS-1 0.282481 Open Space C 74 20.90359 274 OS-1 1.08527 Open Space C 74 80.30998 301 OS-1 2.4042201 Open Space C 74 177.9123 243 OS-1 0.023724 Open Space D 80 1.89792 244 OS-1 0.0085256 Open Space D 80 0.682048 262 OS-1 0.638384 Open Space D 80 51.07072 265 OS-1 0.200344 Open Space D 80 16.02752 266 OS-1 1.78627 Open Space D 80 142.9016 271 OS-1 0.0000143 Open Space D 80 0.001144 272 OS-1 0.407678 Open Space D 80 32.61424 275 OS-1 0.18804 Open Space D 80 15.0432 280 OS-1 0.557376 Open Space D 80 44.59008 283 OS-1 0.179224 Open Space D 80 14.33792 286 OS-1 0.545814 Open Space D 80 43.66512 Existing CN Calculations FID Label 297 OS-1 302 OS-1 Acres CATEGORY 0.359177 Open Space 0.750463 Open Space HYDRO D D 80 80 28.73416 60.03704 303 OS-1 0.849996 Open Space D 80 67.99968 263 OS-1 0.873542 Open Space Water 98 85.60712 232 OS-1 0.673722 Parks/recreation 39 26.27516 231 OS-1 16 OS-1 1 OS-1 0.64981 Parks/recreation 1.07525 ROW 1.54544 ROW C A B 74 83 89 48.08594 89.24575 137.5442 2 OS-1 24.9106007 ROW B 89 2217.043 11 OS-1 0.2716 ROW B 89 24.1724 17 OS-1 2.62356 ROW B 89 233.4968 20 OS-1 7.1996999 ROW B 89 640.7733 21 OS-1 1.2079099 ROW B 89 107.504 29 OS-1 0.0065058 ROW B 89 0.579016 30 OS-1 11.5105 ROW B 89 1024.435 3 OS-1 0.658251 ROW C 92 60.55909 5 OS-1 0.0907257 ROW C 92 8.346764 6 OS-1 4.4772902 ROW C 92 411.9107 8 OS-1 2.5950501 ROW C 92 238.7446 10 OS-1 26.5035992 ROW C 92 2438.331 304 OS-1 0.528579 ROW C 92 48.62927 0 OS-1 0.490802 ROW D 93 45.64459 4 OS-1 1.26943 ROW D 93 118.057 7 OS-1 1.97677 ROW D 93 183.8396 9 OS-1 0.94677 ROW D 93 88.04961 12 OS-1 0.576872 ROW D 93 53.6491 13 OS-1 1.20357 ROW D 93 111.932 14 OS-1 0.0162683 ROW D 93 1.512952 15 OS-1 1.3886 ROW D 93 129.1398 18 OS-1 0.900888 ROW D 93 83.78258 19 OS-1 0.720986 ROW D 93 67.0517 22 OS-1 1.9164701 ROW D 93 178.2317 23 OS-1 3.0310199 ROW D 93 281.8849 24 OS-1 0.771433 ROW D 93 71.74327 25 OS-1 1.32793 ROW D 93 123.4975 26 OS-1 27 OS-1 28 OS-1 0.976538 ROW _ 1.53385 ROW 2.23507 ROW D D D 93 93 93 90.81803 142.6481 207.8615 31 OS-1 2.4072299 ROW D 93 223.8724 49 OS-1 0.17002 Single family A 61 10.37122 54 OS-1 2.4640801 Single family A 61 150.3089 250 OS-1 5.7163301 Single family A 61 348.6961 38 OS-1 0.925961 Single family B 75 69.44708 39 OS-1 0.0003308 Single family B 75 0.02481 45 OS-1 0.66013 Single family B 75 49.50975 Existing CN Calculations FID Label 56 OS-1 Acres CATEGORY 8.3401003 Single family HYDRO B 75 625.5075 66 OS-1 0.0499132 Single family B 75 3.74349 68 OS-1 6.1704302 Single family B 75 462.7823 72 OS-1 0.222243 Single family B 75 16.66823 73 OS-1 6.96907 Single family B 75 522.6803 75 OS-1 5.3699398 Single family B 75 402.7455 78 OS-1 0.369321 Single family B 75 27.69908 79 OS-1 3.8566899 Single family B 75 289.2517 82 OS-1 0.094499 Single family B 75 7.087425 84 OS-1 0.740987 Single family B 75 55.57403 85 OS-1 2.9184599 Single family B 75 218.8845 88 OS-1 0.169412 Single family B 75 12.7059 92 OS-1 2.1430099 Single family B 75 160.7257 93 OS-1 1.99949 Single family B 75 149.9618 96 OS-1 7.10992 Single family B 75 533.244 97 OS-1 2.06705 Single family B 75 155.0288 106 OS-1 0.0760451 Single family B 75 5.703383 109 OS-1 1.97999 Single family B 75 148.4993 110 OS-1 2.2469299 Single family B 75 168.5197 114 OS-1 2.77491 Single family B 75 208.1183 116 OS-1 119 OS-1 120 OS-1 0.157509 Single family 3.45594 Single family 1.21556 Single family B B B 75 75 75 11.81318 259.1955 91.167 121 OS-1 21.7583008 Single family B 75 1631.873 127 OS-1 15.6513004 Single family B 75 1173.848 128 OS-1 10.8638 Single family B 75 814.785 130 OS-1 0.599598 Single family B 75 44.96985 134 OS-1 13.9329004 Single family B 75 1044.968 135 OS-1 3.0098 Single family B 75 225.735 137 OS-1 2.2516201 Single family B 75 168.8715 139 OS-1 4.2119398 Single family B 75 315.8955 140 OS-1 2.54476 Single family B 75 190.857 141 OS-1 2.5064499 Single family B 75 187.9837 143 OS-1 0.825563 Single family B 75 61.91723 146 OS-1 7.4602499 Single family B 75 559.5187 147 OS-1 2.17926 Single family B 75 163.4445 151 OS-1 3.5511899 Single family B 75 266.3392 152 OS-1 2.7906699 Single family B 75 209.3002 155 OS-1 2.2299299 Single family B 75 167.2447 157 OS-1 0.692822 Single family B 75 51.96165 158 OS-1 25.5475006 Single family B 75 1916.063 160 OS-1 26.6989994 Single family B 75 2002.425 162 OS-1 3.06867 Single family B 75 230.1503 165 OS-1 1.30931 Single family B 75 98.19825 166 OS-1 1.15777 Single family B 75 86.83275 Existing CN Calculations FID Label 167 OS-1 168 OS-1 172 OS-1 Acres CATEGORY 0.670137 Single family 45.0410004 Single family 1.20728 Single family HYDRO B B B 75 75 75 50.26028 3378.075 90.546 173 OS-1 8.9081898 Single family B 75 668.1142 176 OS-1 1.04401 Single family B 75 78.30075 181 OS-1 183 OS-1 233 OS-1 3.1614399 Single family I 0.0532236 Single family 1.5909899 Single family B B B 75 75 75 237.108 3.99177 119.3242 236 OS-1 1.22426 Single family B 75 91.8195 239 OS-1 0.659347 Single family B 75 49.45103 251 OS-1 2.1974599 Single family B 75 164.8095 277 OS-1 1.15992 Single family B 75 86.994 279 OS-1 0.731411 Single family B 75 54.85583 285 OS-1 0.072134 Single family B 75 5.41005 289 OS-1 0.269797 Single family B 75 20.23478 37 OS-1 4.2251401 Single family C 83 350.6866 40 OS-1 0.850309 Single family C 83 70.57565 47 OS-1 1.51414 Single family C 83 125.6736 53 OS-1 6.0002298 Single family C 83 498.0191 58 OS-1 0.329147 Single family C 83 27.3192 61 OS-1 0.0037724 Single family C 83 0.313109 64 OS-1 1.32408 Single family C 83 109.8986 70 OS-1 1.40039 Single family C 83 116.2324 74 OS-1 0.766809 Single family C 83 63.64515 76 OS-1 7.4305401 Single family C 83 616.7348 80 OS-1 0.329656 Single family C 83 27.36145 86 OS-1 5.8403602 Single family C 83 484.7499 89 OS-1 9.0230799 Single family C 83 748.9156 91 OS-1 0.42382 Single family C 83 35.17706 94 OS-1 0.017149 Single family C 83 1.423367 99 OS-1 3.35377 Single family C 83 278.3629 102 OS-1 1.15479 Single family C 83 95.84757 103 OS-1 2.2816899 Single family C 83 189.3803 105 OS-1 0.155415 Single family C 83 12.89945 107 OS-1 1.98798 Single family C 83 165.0023 111 OS-1 115 OS-1 117 OS-1 _ 5.9538002 Single family _ 0.0294119 Single family 0.705256 Single family C C C 83 83 83 494.1654 2.441188 58.53625 122 OS-1 3.9525399 Single family C 83 328.0608 123 OS-1 14.1892004 Single family C 83 1177.704 131 OS-1 7.7927899 Single family C 83 646.8016 132 OS-1 6.4439101 Single family C 83 534.8445 136 OS-1 0.93854 Single family C 83 77.89882 142 OS-1 0.283777 Single family C 83 23.55349 144 OS-1 2.29353 Single family C 83 190.363 Existing CN Calculations FID Label 148 OS-1 Acres CATEGORY 0.375396 Single family HYDRO C 83 31.15787 149 OS-1 1.3239501 Single family C 83 109.8879 153 OS-1 1.90396 Single family C 83 158.0287 154 OS-1 1.94139 Single family C 83 161.1354 161 OS-1 6.4387298 Single family C 83 534.4146 163 OS-1 2.45836 Single family C 83 204.0439 164 OS-1 1.9027801 Single family C 83 157.9307 169 OS-1 14.8936996 Single family C 83 1236.177 170 OS-1 1.22877 Single family C 83 101.9879 174 OS-1 0.578944 Single family C 83 48.05235 175 OS-1 2.6995599 Single family C 83 224.0635 177 OS-1 2.17696 Single family C 83 180.6877 178 OS-1 0.010452 Single family C 83 0.867516 234 OS-1 13.6162004 Single family C 83 1130.145 240 OS-1 0.401068 Single family C 83 33.28864 249 OS-1 9.60252 Single family C 83 797.0092 255 OS-1 0.687024 Single family C 83 57.02299 268 OS-1 1.17715 Single family C 83 97.70345 278 OS-1 0.838162 Single family C 83 69.56745 284 OS-1 0.572587 Single family C 83 47.52472 32 OS-1 33 OS 36 OS-1 0.0015609 Single family 0.000325 Single family 0.77603 Single family D D D 87 87 87 0.135798 0.028275 67.51461 41 OS-1 6.4102998 Single family D 87 557.6961 42 OS-1 2.2734399 Single family D 87 197.7893 43 OS-1 0.0142975 Single family D 87 1.243883 44 OS-1 3.3283 Single family D 87 289.5621 46 OS-1 5.0897799 Single family D 87 442.8109 48 OS-1 2.5315199 Single family D 87 220.2422 50 OS-1 5.1108298 Single family D 87 444.6422 51 OS-1 5.2151399 Single family D 87 453.7172 52 OS-1 3.1648099 Single family D 87 275.3385 55 OS-1 0.0145538 Single family D 87 1.266181 57 OS-1 0.0001284 Single family D 87 0.011171 59 OS-1 0.10277 Single family D 87 8.94099 60 OS-1 2.8178 Single family D 87 245.1486 62 OS-1 0.640069 Single family D 87 55.686 63 OS-1 0.0981605 Single family D 87 8.539964 65 OS-1 0.36664 Single family D 87 31.89768 67 OS-1 0.0639194 Single family D 87 5.560988 69 OS-1 0.84539 Single family D 87 73.54893 71 OS-1 1.47243 Single family D 87 128.1014 77 OS-1 0.643915 Single family D 87 56.02061 81 OS-1 0.0014946 Single family D 87 0.13003 83 OS-1 0.973359 Single family D 87 84.68223 Existing CN Calculations FID Label 87 OS-1 90 OS-1 95 OS-1 Acres CATEGORY 3.6313601 Single family 1.08592 Single family 4.8779602 Single family HYDRO D D D 87 87 87 315.9283 94.47504 424.3825 98 OS-1 0.0007719 Single family D 87 0.067155 100 OS-1 0.873806 Single family D 87 76.02112 101 OS-1 104 OS-1 108 OS-1 0.776732 Single family 1.62493 Single family 1.1436501 Single family D D D 87 87 87 67.57568 141.3689 99.49756 112 OS-1 0.0428427 Single family D 87 3.727315 113 OS-1 1.20138 Single family D 87 104.5201 118 OS-1 0.299403 Single family D 87 26.04806 124 OS-1 9.7414303 Single family D 87 847.5044 125 OS-1 0.871433 Single family D 87 75.81467 126 OS-1 8.77211 Single family D 87 763.1736 129 OS-1 2.3843701 Single family D 87 207.4402 133 OS-1 5.0348902 Single family D 87 438.0354 138 OS-1 0.029216 Single family D 87 2.541792 145 OS-1 1.17787 Single family D 87 102.4747 150 OS-1 4.2959299 Single family D 87 373.7459 156 OS-1 0.263678 Single family D 87 22.93999 159 OS-1 J1 0.400732 Single family D 87 34.86368 171 OS-1 0.0187703 Single family D 87 1.633016 182 OS-1 IF 0.271785 Single family D 87 23.6453 235 OS-1 0.403174 Single family D 87 35.07614 237 OS-1 4.5275302 Single family D 87 393.8951 238 OS-1 10.9651003 Single family D 87 953.9637 247 OS-1 1.73821 Single family D 87 151.2243 248 OS-1 2.3062301 Single family D 87 200.642 256 OS-1 1.12046 Single family D 87 97.48002 288 OS-1 0.919304 Single family D 87 79.97945 282 OS-1 0.717572 Small water bodies B 98 70.32206 295 OS-1 1.4145 Small water bodies B 98 138.621 296 OS-1 1.5185601 Small water bodies B 98 148.8189 281 OS-1 0.230295 Small water bodies C 98 22.56891 290 OS-1 0.57831 Small water bodies C 98 56.67438 292 OS-1 293 OS-1 294 OS-1 _ 0.440966 Small water bodies _ 0.0342496 Small water bodies 0.010544 Small water bodies C D D 98 98 98 43.21467 3.356461 1.033312 291 OS-1 2.2005799 Small water bodies Water 98 215.6568 228 OS-1 0.565701 Utilities B 88 49.78169 230 OS-1 0.649001 Utilities B 88 57.11209 229 OS-1 3.85748 Utilities D 93 358.7456 Sub -Total OS-1 807.072428 82 66404.98 PROPOSED TRAVEL TIME CALCULATIONS Basin Data Overland Flow Shallow Concentrated Flow Channel/Street Flow Basin Name Calculated Longest Flowpath (ft) (1) Length (ft) (2) lope (ft/ft) (3) Surface Type (4) Manning's n (5) To (min) (6) Length (ft) (7) Slope (ft/ft) (8) Surface Type (9) K (10) Ts (min) 1 (11) Length (ft) (12) Slope (ft/ft) (13) Manning's n (14) X-Section Type Area (ft2) (15) WP (ft) (16) Channel Velocity (f/s) (17) Tx (min) (19) Time of Cone. Cale. (min) (20) Lag Time (min) (21) A 365 50 0.010 Concrete 0.015 Total To (min)= 1.11 1.11 315 0.020 paved 20.3 Total Ts (min)= 1.83 1.83 0 0.050 Channel 3.00 Total Tn (min)= 0.00 0.00 2.94 1.8 Lag_Time_calculations CN Calculations 307 A 309 A 0.098021 Commercial 0.320519 Commercial A B 89 92 8.723869 29.48775 306 A 0.130686 Commercial C 94 12.28448 308 A 0.366179 Commercial D 95 34.78701 Sub -Total A 0.915405 93 85.28311 rn Z Z rn M Z Appendix D — Hydraulic Data Flood Study HTeaO — Southlake, TX October 28, 2021 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 BB-9 BB-9 "I 642 Legend --------- X- WS 500-Year WS 100- reaY 640 WS 50-Year WS 10-Year ■ Ground 638 636 c 634 w 632 630 628 626 0 200 400 600 800 1000 1200 Main Channel Distance (ft) w w 0 200 0 100 07 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 IRS = 7499 Equivalent to Effective XS 7412 07 J9 .06 1, 07 400 600 800 1000 1200 Station (ft) 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 IRS = 7305 til' .06 -I" .07 200 300 400 Station (ft) 500 Legend WS 500-Year WS 100-Year WS 50-Year WS 10-Year ■ Ground • Bank Sta 1400 600 Legend WS 500-Year WS 100-Year WS 50-Year WS 10-Year ■ Ground • Bank Sta 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 RS = 7222 .07 " .06 .07 A 650 Legend WS 500-Year 645 � WS 100-Year WS 50-Year 640 WS 10-Year 0 > Ground w 635 • Bank Sta 630 625 0 100 200 300 400 500 600 Station (ft) 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 RS = 7091 .07 n'" .06 .07 646 Legend 644 WS 500-Year 642 WS 100 reaY 640 WS 50-Year 638 WS 10-Year 0 — CU 636 ■ Ground w 634 • Bank Sta 632 630 628 0 100 200 300 400 500 600 Station (ft) 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 RS = 6928 .07 .06 .07 646 Legend 644 WS 500-Year 642 WS 100 reaY 640 WS 50-Year 638 WS 10-Year 0 -AF■ CU 636 Ground w 634 • Bank Sta 632 630 628 0 100 200 300 400 500 600 Station (ft) 190_Davis_Blvd Plan: Corrected -Existing 9/29/2021 RS = 6774 07 ;J , .06 07 "� 646 Legend 644 WS 500-Year 642 WS 100 reaY 640 WS 50-Year 638 WS 10-Year 0 - CU 636 ■ Ground w 634 • Bank Sta 632 630 628 0 100 200 360 400 500 600 Station (ft) 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 RS = 6674 07 .06 =I' 07 646 Legend 644 WS 500-Year 642 WS 100 reaY 640 WS 50-Year C 638 WS 10-Year — — 636 ■ Ground w 634 • Bank Sta 632 630 628 0 100 200 300 400 500 600 Station (ft) 190_Davis_Blvd Plan: Corrected —Existing 9/29/2021 RS = 6490 Effective XS E .07 J_O&�— .07 680 Legend 670 WS 500-Year WS 100 reaY 660 WS 50-Year WS 10-Year ° 650 ■ > Ground 2 w 640 Bank Sta 630 620 0 200 400 600 800 1000 1200 Station (ft) rn Z Z rn M Z Appendix E — Construction Plans Flood Study HTeaO — Southlake, TX October 28, 2021 S� LOT 5R2-R1 OWNER // // // Go �� PARKER'S CORNER KARTHIK & / , / / \�� 5� ASSOCIATES REALTY LLC ,' INS. NO. D20107425i INS. NO. D218183197, RETAINING /' /' I��G�'�O�Q�G O.P.R.D.C.T. / / p O.P.R.T.C.T. I EX. STATE OF TEXAS WALL / / P g• pQ / EX. STATE OF TEXAS L.U.D.- MIXED USE / DRAINAGE EASEMENT (BRICK) // / �� ,/ DRAINAGE EASEMENT / VOL. 9882, PG. 396, / g // / VOL. 9882, PG. 396, , / D.R.T.C.T. ,/ / / // D.R.T.C.T. I / // INS. NO. D201074257 O.P.R.D.C.T. APPROX. LOCATION OF RECIPROCAL ACCESS ESMT. VOL. 14825, PG. 225, OWNER D.R.T.C.T. ENCORE RETAIL DEVELOPMENT COMPANY, L.P. INS. NO. D201078783, O.P.R.T.C.T. L.U.D.= MIXED USE 518" CIRF BURY PARTNERS RED \ I / / / / / , / / // / �' /' I SONIC DUMPSTER 15' BUILDING SETBACK- ENCLOSURE I --_= KIOSK=_---- 1 1b (STONE) I _- COVER /' / 311 310 STOP SIG 0 s89°15'25" 7-523.12' /' �_ 5' LANDSCAPE BUFFER! ADA SIGN = m vI ---- --- —� -- —---------T CO _/= / _317 / 31F / EX. FIRE /// HYDRANT I 335 = / �� CURB LINE IS 3.5' Cc12 FIRE LANE EX. 5' X 1U WATER EASEMEN II �� MARKING -lI T �'P pJ ��3, , �- -OVER PROPERTY LINF - -- 11' - 5' p' INS. NO. D201074257, I // �\p�S1? // 12.00' 1 0' U O.P.R.T.C.T. 1 W aS 323 I I l O,,��yy�' c<` �> 5��?� /' �c,JG�� °l UGC / 1 o p U Z O I // 324 I /�2 A�cP,� �2� ' �'0�� /' M / 32.00' HEAVY DUTY w Q M I ! �j C /4 /� / , p CONCRETE LV 0 U ' / 1 / r'2Q9A�9 333 ,' /// o P PARKING STRIPE O ADA PARKING 5.00' z � 04 / I '' DIRECTIONAL BUILDING ENTRANCE STOP BAR 0 W O C I / / 331 ' / PAVEMENT N AND EXIT N . OWNER W < z O I I / 329 / 334 KARTHIK & DUMPSTER ENCLOSURE I MARKING a d ems- I 32s , ASSOCIATES REALTY LLC 6� Q z I / INS. NO. D218138118, I naH1 naHl a ° 10' BUILDING SETBACK 332 �/' 338 O.P.R.T.C.T. \�T J► 32AND LANDSCAPE BUFFER / anlaal 3nlaa(1"3788 �5 - ° 330 /' � 100 YR. FLOOD PLAIN \ ACRES � 85.91' " M I / 340 , \ 1 60,062 S . FT. p HTeaO ' a 0 /' ,' \ 24.00' �T12' I 12' --- I�___-_ T� CO a 2250S.F `O 30.00' 321 ` I /' / / 5.00 a ° a °00 - ° --- FFE: 651. r T a / 336 /' RKCE ENGINEERING — \�� I 00 N ' / FLOOD STUDY TRACT 2 d I 320 T -7.3+0 _ -APPROX. LOCATION OF Ifa i 339 RECIPROCAL ACCESS ESMT. r- ZONE "AE" ZONE "X" VOL. 14825, PG. 225, TRACT 1 PARKING STRIPE - EX. POWER / / 3- D.R.T.C.T. (v 319 // LOT 5R1-R1 �� POLE TO BE DRIVE-THRU WINDOW HEAVY DUTY RELOCATED CONCRETE EX. 7.5 UTILITY ESMT. I I / ,/ 5 ,/ Cr' PARKER S CORNER INS. NO. D201074257 — VOL. 388-150, PG.49, P.R.T.C.T. 1 I / / / , __ O.P.R.T.C.T. C5 343 342 EX. 7.5' UTILITY EASEMENT VOL. 388-150, PG. 49, -328 — — — — — — — — — — — P.R.T.C.T. — — — — — — — — __ - ----------------- --__ / , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - N89015'25"W 44i _ LOT 4 PARKER'S CORNER VOL. 388-150, PG. 49 P.R.T.C.T. SITE DATA TABLE EXISTING ZONING SP-2 - GENERALIZED SITE PLAN DISTRICT PROPOSED ZONING SP-2 - GENERALIZED SITE PLAN DISTRICT LAND USE DESIGNATION MIXED USE NUMBER OF PROPOSED LOTS 1 ASSESSOR PARCEL NUMBER 07887620 GROSS LOT AREA 60,061 SF (1.379 AC) AREA OF OPEN SPACE 31,907 SF (0.730 AC) PERCENTAGE OF OPEN SPACE 53.12% AREA OF IMPERVIOUS COVER 28,154 SF (0.649 AC) PERCENTAGE OF IMPERVIOUS COVER 46.88% BUILDING AREA 2,250 SF NUMBER OF STORIES 1 BUILDING HEIGHT 15' PROPOSED FLOOR AREA 2,250 SF REQUIRED PARKING (1 PER 100SF) 23 PROPOSED PARKING STANDARD 31 HANDICAP 2 TOTAL 33 REQUIRED LOADING SPACE 0 PROVIDED LOADING SPACE 0 AREA OUTSIDE STORAGE N/A PRCENTAGE OF OUTSIDE STORAGE N/A FLOOD ZONE CLASSIFICATION ZONE 'X' & ZONE 'AE' FLOOD ZONE MAP 48439CO090L & 48439CO095K ANTICIPATED SCHEDULE OF DEVELOPMENT CONSTRUCTION START: CONSTRUCTION END: MARCH 2O22 NOVEMBER 2022 ENGINEER BOWMAN CONSULTING GROUP, LTD 1120 S. Capital of Texas Hwy Building #3, Austin, Texas 78746 [Phone] 972.497.2990 Contact: Ryan Safford, P.E. DEVELOPER GKP INVESTMENTS, LLC 1685 Carlyle Ct., Westlake, TX 76262 [Phone] 817.789.9091 Contact: Todd Bockenfeld 72+22 R'IR qd BUILDING SETBACK FRONT (DAVIS BLVD.) 50' REAR 10, SIDE 15' LANDSCAPE BUFFER FRONT (DAVIS BLVD) 10, REAR 10, SIDE 10' (S) / 5' (N) SITE NOTES BUILDING SERVICE O FIRE LANE r— DOOR MARKING 771 0 24' /77r7/7-/7;� FIRE _ TMOS GAS OBSERVATION WELL GM • EX. 10' UTILITY EA EMENT LANE i INS. NO. D2010 4257, O.P.R.T.C. . "�7-407BUILDING SETBACK 5/8"IRF 7� 30,00'IRF OWNER 1 LYNBA HOLDINGS, LLk, 1 Q INS. NO. D221138819, O.P.R.T.C.T. L.U.D.= MIXED USE 1 1 EXISTING LEGEND PROPOSED LEGEND PROPOSED BUILDING CONCRETE SIDEWALK PROPERTY LINE STD. 6" CONCRETE CURB PARKING SPACE COUNT STD. DUTY CONCRETE HEAVY DUTY CONCETE 1. ALL DIMENSIONS SHOWN ARE TO THE FACE OF CURB, PROPERTY LINE OR CENTERLINE OF STRIPING UNLESS OTHERWISE NOTED. 2. A PRE -CONSTRUCTION MEETING WITH CITY ENGINEER SHALL BE HELD PRIOR TO CONSTRUCTION COMMENCEMENT. 3. THE CITY OF SOUTHLAKE SHALL BE GIVEN AT LEAST 48 HOURS NOTICE PRIOR TO PERFORMING ANY INSPECTIONS. 4. TRAFFIC CONTROL SHALL BE IN ACCORDANCE WITH THE PROJECT PLANS, THE CURRENT EDITION OF THE TxDOT DESIGN STANDARDS AND THE LATEST MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MUTCD). 5. ALL MECHANICAL EQUIPMENT TO BE ROOF MOUNTED AND SCREENED FROM HE STREET. 6. CONTRACTOR TO PROVIDE AS-BUILTS OF ALL IMPROVEMENTS TO THE SITE. AS-BUILTS TO INCLUDE HORIZONTAL AND VERTICAL LOCATIONS OF ALL UNDERGROUND UTILITIES INCLUDING, BUT NOT LIMITED TO, PIPES, FITTINGS, STRUCTURES, AND OTHER APPURTENANCES. ELEVATIONS OF PIPES AT CROSSING POINTS MUST BE SUFFICIENT TO IDENTIFY MINIMUM SEPARATION OF UTILITIES. IN ADDITION TO THE AFOREMENTIONED CRITERIA AS-BUILTS MUST MEET ALL LOCAL AND JURISDICTIONAL REQUIREMENTS FOR CERTIFICATION OF CONSTRUCTION. 7. ALL AFFECTED SIDEWALKS, RAMPS AND CROSSWALKS, WILL BE BUILT AND INSPECTED TO MEET CURRENT ADA REQUIREMENTS. 8. BUILDING SETBACK DIMENSIONS MEASURED TO OUTERMOST ARCHITECTURAL FEATURE. CONTRACTOR TO REFER TO ARCHITECTURAL PLANS FOR BUILDING DIMENSIONS. 9. ALL CURB RADII ARE 3' UNLESS SHOWN OTHERWISE. 10. PRIOR TO INSTALLATION, CONTRACTOR MUST VERIFY LOCATIONS OF LIGHT POLES, LANDSCAPING AND UTILITIES. 11. CONTRACTOR TO REFER TO ARCHITECTURAL PLANS FOR BUILDING FOOTPRINT. 12. CONTRACTOR TO REFER TO PHOTOMETRIC PLAN FOR LIGHT POLE DETAILS. LANDSCAPE ARCHITECT OWNER EVERGREEN DESIGN GROUP, INC 15455 Dallas Pkwy, Suite 600 Addison, Texas 75001 [Phone] 800.680.6630 Contact: Rodney McNabb KARTHINK & ASSOCIATES REALTY LLC, LP 190 DAVIS BLVD. SOUTHLAKE, TX 76092 O 0 0 CIRF IRON ROD WITH CAP FOUND CIRS 5/8 INCH IRON ROD WITH CAP STAMPED "SPOONER 5922" SET IRF IRON ROD FOUND XCF "X" CUT FOUND O.P.R.T.C.T. OFFICIAL PUBLIC RECORDS TARRANT COUNTY, TEXAS D.R.T.C.T DEED RECORDS TARRANT COUNTY, TEXAS P.R.T.C.1 PLAT RECORDS TARRANT COUNTY, TEXAS CONTROL POINT O PROPERTY CORNER MARKER FOUND - AS NOTED POWER POLE GUY WIRE LIGHT POLE a TELEPHONE RISER GMK GAS MARKER C) TREE (AS DESCRIBED) OW WATER METER DQ WATER VALVE FIRE HYDRANT S� IRRIGATION CONTROL VALVE U SIGN 9 UTILITY PULL BOX oHE OVERHEAD ELEC. NG U.G. GAS w U.G. WATER CONCRETE AREA X 555.55 SPOT ELEVATION EC 555.55 EDGE OF CONCRETE ELEVATION GT 555.55 GUTTER ELEVATION TC 555.55 TOP OF CURB ELEVATION TB 555.55 TOP OF BANK ELEVATION TO 555.55 TOE OF BANK ELEVATION SUBJECT PROPERTY LINE _ EXISTING EASEMENT LINE BUILDING SETBACK LINE TOP OF BANK TOE OF BANK CENTER OF CREEK x CANOPY - COVERED AREA ELEVATIONS SHOWN HEREON ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88) AND WERE CALCULATED BY APPLYING VERTICAL SHIFTS DERIVED FROM GEOLID MODEL 2012A TO ELLIPSOID HEIGHTS CALCULATED FROM GPS/GNSS OBSERVATIONS REFERENCED TO THE NORTH AMERICAN DATUM OF 1983, 2011 ADJUSTMENT. I I / I EX. 24' WIDE COMMON ACCESS EASEMENT I I INS. NO. D201074257, O.P.R.T.C.T. I I STOP BAR I 403 I p O b DO NOT BLOCK INTERSECTION PAVEMENT MARKING I N D D4 R30' r' It FIR30/S00°5753"E Lo STOPSIGN 6 ' 12' o FOR SALE 90.04' - SIGN 18.00' 5/8" IRF &e O% - S ° 2'05 / 24. ' e I/ y It 4'X4" METAL POST BASE CALLED: 0.93 ACRES LYNBA HOLDINGS, LLC INS. NO. D221138819, O.P.R.T.C.T. CITY CASE NUMBER: ZA21-0049 WV RIM EL=654.04' TN =649.57' Lu EL WV RIM EL=654.13' O TN EL=649.37' 2' STRIPED MEDIAN T IPUBLIC Lu 10' LANDSCAPE � ° BUFFER Id I II 21.01, ETAL E ° ROW " . I PWVARIM EL=656.34' TN EL=653.82' WV RIM EL=656.41' TN EL=653.29' J IIII I' d ° I" ATMOS W 50' BUILDING SETBACK ADOPTA HIGHWAY SIGN LOVEGRASS LN �o o�- 0 �y 0 LU SITE W. SOUTHLAKE BLVD. D N v N < o 0 0 Um O D m m MICHAEL DR. VICINITY MAP 0�4 Know what's below. Cal I before you dig. SCALE: NTS 10 0 10 20 SCALE: 1 INCH = 20 FT /THE LOCATION OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN APPROXIMATE WAY ONLY, THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. CONTRACTOR AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE OCCASIONED BY THE CONTRACTORS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES. LrI Z O W E Cn w LLJ Cc o z 0 w CO NE O O d7 O U N & O N It CID u, N N O I� r p N � � U � cz o LL � J p oIZ Ci 2_ (D o aco =3 N N o rn 5 c _ 3o E X 00 LL O LU p 00 D_ n M m X U F_ 0 c O N �mQ N //)//' (C) I- X w Z LU 0 � U z 0 = LEI 0- O Q 2 Q U) J T � T �W VJ Ln \ a0 0 J O T THIS DOCUMENT IS RELEASED FOR THE PURPOSE OF INTERIM REVIEW, MARK-UP, AND/OR DRAFTING UNDER THE AUTHORITY OF RYAN C. SAFFORD, P.E. ON OCTOBER 28 2021. IT IS NOT TO BE USED FOR CONSTRUCTION, BIDDING, OR PERMIT PURPOSES. DESIGN I DRAWN CHKD PK PK RS JOB No. 070443-01-001 SHEET C1.0 rn Z Z rn M Z Appendix F — Electronic Data Flood Study HTeaO — Southlake, TX October 28, 2021