Item 7C - Queue Analysis 08-30-2021TRAFFIC IMPACT GROUP, LLC TO: Clay Cristy, P.E., ClayMoore Engineering FROM: Scott Israelson, P.E., PTOE DATE: 30 August 2021 RE: Drive -Through Queue Analysis NW Corner of Southlake Et White Chapel Southlake, TX Introduction Phillips Edison Et Co proposes to redevelop a site in Southlake, Texas. The site is located in the northwest corner of Southlake Boulevard Et White Chapel Road and is currently occupied by a gas station. The redevelopment proposes to construct a building totaling 4,600 SF. Vehicles will access the site using existing driveways to the commercial area. The planned uses are a 2,450 SF retail site and a 2,150 SF restaurant with drive -through window. Although no tenants are planned yet, it is probable that the restaurant will be a coffee shop. The site plan is attached. The City of Southlake requested this analysis to determine if the drive -through window is feasible with respect to queueing. Trip Generation This analysis uses the ITE Trip Generation Manual 10th Edition to estimate the projected trips by coffee shop portion of development. Table 1 contains the summary of the trip generation estimate, which includes a reduction in trips based on the existing use. Table Generation Average Weekday Driveway Volume SMJWI PM Peak Hour Land Use Code Size Enter Exit Enter Exit Existing Use Gasoline/Service Station with Convenience Market 945 10 Fueling Positions 64 61 71 69 Proposed Use Coffee/Donut Shop with Drive -Through Window 937 2.15 Th.Sq.Ft.GFA 97 94 47 46 Total New Peak Hour Trips to Adjacent Network 33 33 -24 -23 www.traffic-impact.com 1432 Greenway Drive, Suite 800, Irving, TX 75038 11 P a g e TRAFFIC IMPACT GROUP, LLC Queueing Analysis Queue analysis for entrance gate examines two key factors; arrival flow rate, and departure flow rate. The arrival flow rate, A, is measured by the expected entering trips generated by the development in the peak hour. For this project, the AM peak is the highest hour, and the expected number of entering vehicles is 95 vehicles per hour. According to the ITE Trip Generation Handbook, fast-food restaurants experience a pass -by rate between 32% and 68% percent in the AM peak hour. Pass -by rates can be used to assume the number of entering trips that use the drive -through window. The trip generation estimates an entering volume is 97 vph in the peak hour. This analysis assumes 50% of entering volumes will use the drive -through window, so the arrival flow rate is 48 vph. The departure flow rate, p, is based on the average service time for a vehicle to order and receive the coffee. According to experience, the processing rate is one minute per order, providing that vehicles are directed to exit the drive -through lane and park for orders that take longer than one minute. The departure flow rate is 60 vph. Estimating how many vehicles are in a queue uses the relationship between the two rates. The mean queue length is calculated by the following equation: E. = A2 / p * (p-A) The mean queue length at the pickup window is expected to be 482 / (60 * (60 - 48)), or 3.20 vehicles. The probability of more than N vehicles in a queue is calculated by the following equation: P(n>N)=(A/p)"'' To determine how often there will be more than one vehicle in the queue, we find that P(n > 1) = (47 / 60) 2, or 0.640. This means 64% of queues will be greater than one vehicle. Using that formula to achieve the 95th percentile, analysis shows that 94.5% of queues will be twelve cars or less. Therefore, the amount of queue storage should provide room for twelve vehicles. The calculations are attached to this memo. www.traffic-impact.com 1432 Greenway Drive, Suite 800, Irving, TX 75038 2 1 P a g e SIMPLE Drive Through Queueing Arrival Rate 48 vph Departure Rate 60 vph Mean Queue P8qO vehicles Mean Queue length Feet Probablility of more than 12 vehicles Probabilty is 5.5% 0 0 Z Q J Cl. Ld (N I N Z Q J d Ld H F- Ld Ld 2 0 0 a w Y a J 2 H O (N Z O 0 Ld (n a J _J 2 d 0 Q � a 04 0 O 00 N 00 _ H _ Ln04Q V U oN O oN Q _j \�\ U 00 IV 00 o m F- > z Ld 0 O N H- H- Q F_ OOU(n J J O Q 0-0-JJ SITE DATA SUMMARY LOT 2R1 LOT 4R TOTAL EXISTING ZONING SP-2 SP-2 - PROPOSED ZONING SP-2 SP-2 - LAND USE DESIGNATION RETAIL/COMMERCIAL RETAIL/COMMERCIAL - GROSS/NET ACREAGE 7.468 AC 325,295 SF 1.075 AC 46,814 SF 8.54 AC 372,109 SF NUMBER OF PROPOSED LOTS 1 1 2 PERCENTAGE OF SITE COVERAGE 30.05% 9.98% 27.52% AREA OF OPEN SPACE 36,437 SF 13,332 SF 49,769 SF PERCENTAGE OF OPEN SPACE 11.20% 28.48% 13.37% AREA OF IMPERVIOUS COVERAGE 288,858 SF 33,482 SF 322,340 SF PERCENTAGE OF IMPERVIOUS COVERAGE 88.80% 71.52% 86.63% GROSS BUILDING AREA 98,300 SF 4,788 SF 103,088 SF NUMBER OF STORIES 1 1 - MAXIMUM BUILDING HEIGHT 35'-0" 35'-0" - PROPOSED FLOOR AREA 97,741 SF 4,672 SF 102,413 SF PROPOSED FLOOR AREA BY USE FOOD STORE RETAIL RESTAURANT TOTAL 63,959 SF 28,782 SF 5,000 SF 97,741 SF - 2,322 SF 2,350 SF 4,672 SF 63,959 SF 31,104 SF 7,350 SF 102,413 SF REQUIRED PARKING PARKING RATIO PROVIDED AT 11268 SF 382 SPACES PROVIDED PARKING STANDARD OFF -SITE STANDARD (PARK PROPERTY) HANDICAP TOTAL 315 SPACES - 13 SPACES 328 SPACES 35 SPACES - 2 SPACES 37 SPACES 350 SPACES 18 SPACES 15 SPACES 383 SPACES REQUIERD LOADING SPACES 2 SPACES - 2 SPACES PROVIDED LOADING SPACES 3 SPACES - 3 SPACES AREA OF OUTSIDE STORAGE - - - PERCENTAGE OF OUTSIDE STORAGE - - - ANTICIPATED SCHEDULE OF DEVELOPMENT CONSTRUCTION START DATE: CONSTRUCTION END DATE: Feb-99 Oct-99 Dec-21 Jun-22 - - LANDSCAPE CALCULATIONS SUMMARY CHART - LOT 4R INTERIOR LANDSCAPE % OF ARE IN CANOPY ACCENT SHURBS GROUND SEASONAL REQUIRED LANDSCAPE FRONT OR TREES TREES 5 GAL. COVER COLOR / PROVIDED AREA (SF) SIDE (1 PER 500) (1 PER 250) (1 PER 40) (SF) 15% 2% REQUIRED 2300 75% 5 9 58 345 SF 46 SF PROVIDED 11,591 75% 5 9 101 2,441 SF 70 SF * TOTAL INCLUDES 9 EXISTING TREES TO REMAIN ON SITE SUMMARY CHART - LOT 2R1 INTERIOR LANDSCAPE REQUIRED LANDSCAPE % OF ARE IN CANOPY ACCENT SHURBS GROUND SEASONAL / PROVIDED AREA (SF) FRONT OR TREES TREES 5 GAL. COVER COLOR SIDE (1 PER 500) (1 PER 250) (1 PER 40) (SF) 15% 2% REQUIRED 24,307* 75% 40 81 405 405 486 SF PROVIDED 27,602 75% 28 24 324 6,052 552 SF I *NOTE ANY CREDITS USED IN CALCULATIONS: A. REQUIRED LANDSCAPE AREA WAS REDUCED BY 10% FOR LANDSCAPING OR R.O.W. AND 10% FOR WATER CONSERVATION IRRIGATION i BICENTENNIAL PARK ADDITION CALLED 6.0 ACRES CITY OF SOUTHLAKE, TEXAS DOC. NO. D220044872 L.U.D. -PUBLIC PARKS /OPEN SPACE P.R.T.C.T. VOL. 10345, PG. 278 OWNER: CITY OF SOUTHLAKE D.R.T.C.T. I N89°08'03"E 518.15' — — — — — 5 © ❑w 3 10' - B BUFFERYARD Y EX. FH 36.5' COMMON ACCESS, UTILITY & DRAINAGE ESMT w EX. CURB INLET Ss Ss _ E� CAA SLIUET29`� PKT�T Ss ss 10 SONRY SCRg14ING WALL C ti o boo.------��---��---- BLOCK 6, LOT 2 10, \, s w IW I DIAMOND CIRCLE ESTATES u_ �� 5 MASONRY. TRASH COMPACTOR 70' �Cy\ 0 to SECOND INSTALLMENT m � co SCR NING RECEIVING DOOR N I VOL. 388-181, PG. 68 LO�m °w) ALL LOADING DOCK \ � �_ \ •.•.•.•.• to 5' UTILITY ESMT PER P.R.T.C.T. z b O9 �QO EXIT DOOR ;.124 �,-3»' CAB. A, SLIDE 5299 ZONED - SF-1 O. s P.R.T.C.T. 101.95' DOCK DOORS s • r \ L.U.D. -LOW DENSITY y5 I/ O FIRE EXIT DOOR \ \ 10 O \ R22 71, RESIDENTIAL I/ SMALL TRUCK LOADING ® FH OWNER - LONGTI SUN ---- o � r -n X w EXISTING TRASH O \,` 5' UTILITY ESMT PER I ENCLOSURE 3 � — r 9.54' +I w o CAB. A, SLIDE 5299 w / — — P.R.T.C.T. 17 w >_ I 58 5' ±12.44' Zo rl/ -- R�g.29 I I r � w I \ LOT 2 ,2 TENNANT EXIT DOORS I I O LL U I ��6 7.47 AC (325,295 SF) ALONG THIS SIDE- - z TAX PARCEL NO. 07389620 LOT 2R2 � 0 a OU / DRAINAGE ESMT PER Lo I CAB. A, SLIDE 5299 L.B.G. HALL NO. 686 M Q N r I 100 WEST SOUTHLAKE BOULEVARD P.R.T.C.T. ADDITION w / "TOM THUMB FOOD STORE" CABINET A,. SLIDE 5299, � r i/ > i O I Q P.R.T.C.T. NIm USE: FOOD STORE w J L.U.D. - PUBLIC PARKS / OPENS Q I � SPACE MAX HEIGHT: 35'-0" Lu Lu I p OWNER - CITY OF z " / ONE STORY MASONRY BUILDING Eo SOUTHLAKE 17 cfl rl / Lu (73,171 SQ. FT.)Eo rr U I X r / z I w COMMON ACCESS, UTILITY & I ' DRAINAGE ESMT I / r I� PER CAB. A, SLIDE 5299, P.R.T.C.T. © r 10' UTILITY PER CAB. A, I 4 CONCRETE SIDEWALK SLIDE 5299 P.R.T.C.T. I 0 } r II TENANT ENTRY DOORS 5' UTILITY ESMT. PER N 10.41 1 ALONG THIS SIDE LL LL CAB. A, SLIDE 5299 FH I m P.R.T.C.T. — — — — — — — — — — — — ® o, m ----- g q qq q q z z �I 29.4' —I PLANTER O i L`ti (`\ (�\ (` I w I y?yY 6 S89°13'04"W _ _ J Lu 25.28' 5 o---------�--- a ' II 10'X50' LOADING I © LIGHTPOLE N 30' COMMON ACCESS ESMT. �1 T N — I — — — _ rn ti PER CAB. A, SLIDE 5299, P.R.T.C.T. Q cox W L Lj_I I (TYP.) ,� ,� ,� rr ,� _— — — 1LI —� + w o � — — — — — 28-6U- 24.4'FL X ----- -- -- FH II w mI I r 1 PLANTER I 11 10 8 O IX I 10 8 7 5 5 I II w � II 12 a ,2o�P I TRACT 3 I X w O I © I w I O I MEMORANDUM OF LEASE w Q z �l PARKING AREA I w I r 1 I w VOL. 14389, PG. 20 I �=) b o _ I I O x- w VOL. 15286, PG. 335, D.R.T.C.T. I m c`nv iD H w I I o �� I o T.C.C.F. NO. D207132980 I I Y z I.- E- w o I I m 5 O cn Lu I X EXISTING TRASH ENCLOSURE I r i ?_= N Z I I ; U U 5 I w N I O 0 � < 2 w i F7 i 0 7 z0 I 5 CALLED 3.829 ACRES I 1,_ Cn C0 w 5 I O WYNDHAM INVESTMENT PROPERTIES INC. w w I U 9 O VOL. 12561, PG. 334 I z a D.R.T.C.T. 2 ti r 1 0 0 PLANTER I w aim I p 8 LOT 2R1 C6 9 Cn �U L. ALL NO. 686 AD O L.U.D. -PUBLIC PARK /OPEN SPACE I I 0 w w I 10 CAB T A, SLIDE 99, OWNER - CITY OF SOUTHLAKE N I I U o P.R.T.C.T. R11' I BICENTENNIAL PARK ADDITION d z to 12 `'' I H- I -� z- L U D RETAIL / COMME A � I SUMMARY CHART - BUFFERYARDS TOM THUMB - LOT 2R1 LOCATION REQUIRED/ PROVIDED LENGTH BUFFERYARD WIDTH - TYPE CANOPY TREES ACCENT TREES SHRUBS FENCE/ SCREENING NORTH REQUIRED 519 10'- B 10 16 52 NONE PROVIDED 379 10'- B 8 11 38 NONE EAST 1 REQUIRED 419 10'- E 4 8 34 NONE PROVIDED 315 10'- E 3 6 25 NONE EAST 2 REQUIRED 76 " 5'- A 1 2 6 NONE PROVIDED 30 5'- A 1 1 2 NONE SOUTH REQUIRED 245 " 5'- A 2 5 20 NONE PROVIDED 233 5'- A 2 5 19 NONE WEST 1 REQUIRED 716 ` 5'- A 7 14 57 NONE PROVIDED 214 5'- A 2 4 17 NONE WEST 2 REQUIRED 99 10' -B 2 3 10 NONE PROVIDED 99 10' -B j 2 j 3 j 10 j NONE *NOTE ANY CREDITS USED IN CALCULATIONS: A. DRIVEWAY WIDTH WAS DEDUCTED FROM THE TOTAL LENGTH OF THE REQUIRED BUFFERYARD. OTHER COMMENTS: 1. WHERE PARKING IS PROVIDED BETWEEN THE BUILDING SETBACK LINE AND PUBLIC R.O.W. SHRUBS OBTAINING A MATURE HEIGHT OF THREE (3') FEET OR GREATER MUST BE PLANTED AT A MAXIMUM OF SPACING OF THIRTY INCHES (30") ON CENTER CONTINUOUS ALONG ALL PAVED EDGES OF THE PARKING OR DRIVE AREA. 2. A MINIMUM OF 50% OF ALL CANOPY TREES PLANTED ON THE SITE SHALL BE 2" IN CALIPER AND 50% MUST BE 4" IN CALIPER. THIS INCLUDES BUFFERYARDS AS WELL AS INTERIOR. 3. A SHRUB SCREEEN IS PROPOSED TO BE PROVIDED BETWEEN THE BUILDING SETBACK LINE AND THE R.O.W. SUMMARY CHART - BUFFERYARDS LOT 4R LOCATION REQUIRED/ PROVIDED LENGTH BUFFERYARD WIDTH - TYPE CANOPY TREES ACCENT TREES SHRUBS FENCE/ SCREENING NORTH REQUIRED 269 5' -A 3 5 22 NONE PROVIDED NONE*** NONE*** NONE*** NONE*** NONE*** NONE EAST REQUIRED 224 10'- E 2 4 18 NONE PROVIDED 224 10'- E 4* 0** 18 NONE SOUTH REQUIRED 233 20'- 0 2* 5 19 NONE PROVIDED 72 20'- 0 2* 0** 19 NONE WEST REQUIRED 159 5'- A 2 3 13 NONE PROVIDED NONE*** NONE*** NONE*** NONE*** NONE*** NONE I* TOTAL INCLUDES EXISTING TREES TO REMAIN ON -SITE ** REDUCED DUE TO EXISTING TREES TO REMAIN ***PER SP-2 ZONING NO BUFFER YARDS WILL BE PROVIDED FOR INTERNAL BOUNDARY LINES 30' B.L. PER CAB. A, SLIDE 5299 P.R.T.C.T. DOC. NO. D220044872 w P.R.T.C.T. 0 Q 13 70 I Q 00 � I \_— � x III w _X I r o wr I R19',�� Q�� A o I I � EX .SIDEWALK M a I PLO / CP �OP 28.51' ±14.84' 1 ® IH Iw I I I I EBERRY G H L L SURVEYO 6 / ® FH STRACT N WATER METERS I I I / 0 \� 1t 61°1llr'E ,R1 ® 30' BUILDING LINE 15PUBLIC UTILITY SAN. SEW. & DRAINAGE ESMT. PER VOL. 10587, PG. 622 D.R.T.C.T. In EXISTING TRASH ENCLOSURE 36.5' COMMON ACCESS, UTILITY & N DRAINAGE ESMT PER CAB. A, SLIDE 5299, P.R.T.C.T. T 27' COMMON ACCESS, UTILITY & DRAINAGE ESMT. PER CAB. A, SLIDE 5299 P.R.T.C.T. 26' COMMON ACCESS, UTILITY & DRAINAGE ESMT PER CAB. A, SLIDE 5299 P.R.T.C.T. LOT1,BLOCK1 FIRST AMERICAN SAVINGS N 00 BANC ADDITION - CABINET A, SLIDE 5299, 3: P.R.T.C.T. L.U.D. - RETAIL COMMERCIAL OWNER - FIRST AMERICAN SAVINGS BANK 30' ACCESS ESMT PER VOL. 10582, PG. 1159 D ss — ss — s E EW METAL �n,P) IX © I ___ I I 17' Q- PARTIAL RESPONSE tX ACTION AREA I r I VOL. 16919, PG. 9 D.R.T.C.T. I /j FH R16' I I J ------ I PLANTER I ® P� G rn I o 5 _ I I 36' COMMON ACCESS, UTILITY m — — & DRAINAGE ESMT PER CAB. A, SLIDE — I 5299 I r I P.R.T.C.T. I 6 CABINET A, SLIDE 1216, P.R.T.C.T. 0 Q LLI w J O � > ZONED -S ¢ Q _ RET IL Lv i `+r-I I.:UIVIIVItKI.:I E = cj LJ LLI ?j L.B.G. HALL NO. 686 ADDITION � . a- > CABINET A, SLIDE 5299, CO o Q < P.R.T.C.T. Og w ° Z O USE: RETAIL / D/T REST. c� 1-STORY �� 79.64' _o 35'-0" MAX. HEIGHT Q � 4,788 SF BUILDING w 1 1.08 ACRES O o I I � 29.2 r �l u- PP � r r SIGN M I rn d ss � w 8 7°2 '35", R30' z I ss ® w r _ 9.30' � OHE v OHE I A=2°05'04" 74 FERYAFzD fly 00 FH �O BVF i Ccg ±36' EX. R=2954.79' gym. c� 20 0' 1169 DRIVEWAY PP L=107.50' 9 22 W 5411„W 1+ CB10 .50' ❑S(4° SIDEWALK S80°36'49"W EX. w 22.29' 60 o? ±143.91 R=2954.79' EX. SIDEWALK EX. HEADWALL L=75.79' �+ CB=S83°25'59"W ±123.64' 50' B.L. PER C=75.78' CAB. A, SLIDE 5299 I P.R.T.C.T. BLOCK 6, LOT 3 DIAMOND CIRCLE ESTATES SECOND INSTALLMENT VOL. 388-181, PG. 68 P.R.T.C.T. ZONED - SF-1 L.U.D. -LOW DENSITY RESIDENTIAL OWNER - WILLIAM FLEMINSTER BLOCK 6, LOT 4 DIAMOND CIRCLE ESTATES SECOND INSTALLMENT VOL. 388-181, PG, 68 P.R.T.C.T. ZONED - SF-1 L.U.D. -LOW DENSITY RESIDENTIAL \OWNER - WILLIAM FLEMINSTER I �m �x m� -� D G) U) Z X I I w 6 I 10' UTILITY EASEMENT •i . ' 1328 i/,� CABINET A, SLIDE 121 O BUFFERYARD P.R.T.C.T. "WiE 483.�7— OHE OHE ° •OH ° 8 • 30" W POWER POLE © A=1°02'31" 50' BUILDNG. LINE R=2949.79' 5 SWL CABINET A, SLIDE L=53.65' P.R.T.C.T. CB=S86°41'30"W WALK C=53.65' EX 8 SIDE • ZIVEWAY ±191.88' TO WHITE CHAPEL BLVD. TO MA KE BOULEVARD FARM p�RD W.SOUTHLA RIGHT OF WAY WIDTH VARIES GLORIA JEANNE LECHLER, ET. AL. VOL. 11940, PG. 898 VOL. 9979, PG. 2371 D.R.T.C.T. ZONED - 01 / L.U.D. - OFFICE COMMERCIAL BLOCK 6, LOT 5R DIAMOND CIRCLE ESTATES ADDITION ZONED-C2 L.U.D. -RETAIL/ COMMERCIAL OWNER: JOHN COSTELL( GRAPHIC SCALE 40 0 20 40 80 1 inch = 40 ft. w Q F STgTF J J Z Ill J O w r �Q w Q 0-= 0 z w w = Q SITE z o U z W SOUTHLAKE BLVD zOzz VICINITY MAP N.T.S. LEGEND CONCRETE PAVEMENT CONCRETE SIDEWALK BUFFERYARD LANDSCAPE AREA PROPOSED CONCRETE CURB AND GUTTER ® PARKING COUNT FL PROPOSED FIRE LANE STRIPPING NOTES: 1. ALL DIMENSIONS ARE TO FACE OF CURB UNLESS OTHERWISE NOTED. 2. NO CHANGES TO EXISTING DRIVEWAY STACKING OR SPACING IS PROPOSED. 3. A MINIMUM 8' TALL MASONRY SCREEN WALL MATCHING THE PRINCIPLE BUILDING WITH A SOLID METAL ACCESS GATE IS REQUIRED FOR ALL TRASH DUMPSTERS. BENCHMARKS: - TBM #1: AN "X" CUT FOUND IN CONCRETE ON N WHITE CHAPEL BLVD, APPROXIMATELY 41' NORTH AND 3' EAST OF THE EXISTING NORTH EAST PROPERTY CORNER. ELEVATION: 652.31 - TBM #2: AN "X" CUT FOUND IN CONCRETE ON W SOUTHLAKE BLVD, APPROXIMATELY 36' SOUTH AND 45WEST OF THE SOUTH EAST PROPERTY CORNER. ELEVATION: 656.20 - CITY BENCHMARK: MONUMENT 36 GEODETIC DATA LATITUDE: 32' 56' 28.72525" LONGITUDE: 97' 08' 58.47623" ELLIP HGHT: 584.92 TEXAS FIRM #14199 I �0 0 o U Z N LLJ W o wo z 2 a aU W LU z w t rM �� �o o� J x z F �or � U2 W `.' 0 M oW P R E L I M I N A R Y FOR REVIEW ONLY Not for construction purposes. CLAYMOORE ENGINEERING ENGINEERING AND PLANNING CONSULTANTS Engineer CLAY CRISTY P.E. No.109800 Date 8/30/2021 0 U �a x a CASE # : ZA21-0059 W OWNER: SUNTREE STATION LLIC 11501 NORTHLAKE DR. CINCINNATI, OH 45249 U 0 APPLICANT: CLAYMOORE ENGINEERING, INC. r � 1903 CENTRAL DRIVE, SUITE #406 �J BEDFORD, TX 76021 PH: 817.281.0572 CONTACT NAME: CLAY CRISTY SURVEYOR: EAGLE SURVEYING 210 SOUTH ELM STREET, STE 104 DENTON, TX 76201 PH: 940.222.3009 CONTACT NAME: MASON DECKER DESIGN: CWP LEGAL DESCRIPTION: DRAWN: CWP HALL, LBG #686 ADDITION LOT 2R1 & 4R CHECKED: CLC DATE: 8/30/2021 CITY: STATE: SHEET SOUTHLAKE TEXAS SP-1 COUNTY SURVEY: ABSTRACT NO. TARRANT HALL 686 File No: