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Item 6A - Credit Proposal Letter April 9, 2019 Mr. Kevin Ferrer, PE c/o Ms. Lorrie Fletcher City of Southlake – Planning & Development Services 1400 Main Street, Suite 310 Southlake, TX 76092 RE: Lot 1, Block 2, Nolen Office Park Addition Case No. ZA18-0062, BHB No. 2018.741.000 Mr. Ferrer, Please see the enclosed opinion of probable construction cost and cost credit proposal summary for the public improvements at Nolen Office Park Phase 2. It is understood that a certain amount of the public improvements serve the proposed development and are considered to be the developer’s responsibility. This cost credit proposal is for those public improvements beyond rough proportionality. It appears reasonable that the proposed public water and public sewer improvements are the developer’s responsibility; please see the enclosed Overall Utility Plan Exhibit. We also recognize that a 24-ft public roadway extending westward from South Nolen Drive approximately 435-ft to the western proposed driveway could be the developer’s responsibility. We are requesting that the additional width of the proposed 36-ft roadway be credit to the developer. And we are requesting that the 30-in public storm drain system conveying offsite water through the Nolen Office Park development be credited to the developer as well. We are requesting credit for public improvements of up to the estimated $185,000 of impact fees; final amount may be determined from actual bid amount. Also included in the enclosed opinion of probable construction cost and cost credit proposal summary are the additional roadway and drainage improvements requested at the Planning & Zoning Commission Meeting April 4, 2019 (highlighted in light blue on the enclosed Overall Utility Plan Exhibit). If these additional improvements are to be constructed with this development, we suggest that these should be covered by the City. On the following page is a break down of the suggested impact fee credit. Mr. Kevin Ferrer, PE c/o Ms. Lorrie Fletcher April 9, 2019 Page 2 of 2 OPC Developer Portion Impact Fee Credit Proposed Public Roadway Improvements $ 184,000 $ 122,667 $ 61,333 Proposed Public Drainage Improvements $ 106,000 $ 0 $ 106,000 Total for Proposed Public Improvements $ 290,000 $ 122,667 $ 167,333 Additional Public Roadway Improvements $ 32,000 $ 0 $ 32,000 Additional Public Drainage Improvements $ 31,000 $ 0 $ 31,000 Total for Additional Public Improvements $ 63,000 $ 0 $ 63,000 Sincerely: BAIRD, HAMPTON & BROWN Daniel Franklin, PE Project Manager, Civil Engineer CC: Craig Wilkinson – Office Equity Solutions ENCLOSURES: Opinion of Probable Construction Cost & Cost Credit Proposal Summary Overall Utility Plan Exhibit BHB No. 2018.741.000 Baird, Hampton & Brown 3801 William D. Tate, Suite 500 Grapevine, TX 76051 Tel 817-251-8550, www.bhbinc.com 4/8/2019 No. Item Description Unit Quantity Unit Price Amount Public Roadway Improvements 1 Traffic Control LS 1 2,500.00 $ 2,500.00 $ 2 Erosion Control Measures LS 1 2,500.00 $ 2,500.00 $ 3 Sawcut, Remove & Dispose of Ex. Conc. Curb LF 120 3.00 $ 360.00 $ 4 Sawcut, Remove & Dispose of Ex. Conc. Drive SF 66 3.00 $ 198.00 $ 5 Unclassified Earthwork (Cut & Fill) CY 225 8.00 $ 1,800.00 $ 6 6" Lime Stabilized Subgrade SY 2,100 5.00 $ 10,500.00 $ 7 Lime for Subgrade (35 lb/SY) TON 37 130.00 $ 4,810.00 $ 8 6" Reinforced Concrete Pavement SY 2,000 45.00 $ 90,000.00 $ 9 6" Attached Concrete Curb LF 740 8.00 $ 5,920.00 $ 10 4" Thick Reinforced Concrete Sidewalk SF 4,225 6.00 $ 25,350.00 $ 11 Solid Sod in Landscape Areas SY 610 5.00 $ 3,050.00 $ 12 Street Light with Pole, Fixture & Foundation EA 4 5,000.00 $ 20,000.00 $ Subtotal = 166,988.00 $ 10% Contingency = 17,012.00 $ Total for Public Roadway Improvements = 184,000.00 $ Public Drainage Improvements 13 Connection to Ex. Drop Inlet EA 1 500.00 $ 500.00 $ 14 30" RCP Storm Drain LF 640 100.00 $ 64,000.00 $ 15 5'x5' J-Box EA 3 3,500.00 $ 10,500.00 $ 16 10' Curb Inlet EA 2 5,500.00 $ 11,000.00 $ 17 18" RCP Storm Drain LF 75 70.00 $ 5,250.00 $ 18 5'x5' J-Box w/ Grate Inlet EA 1 4,250.00 $ 4,250.00 $ Subtotal = 95,500.00 $ 11% Contingency = 10,500.00 $ Total for Public Drainage Improvements = 106,000.00 $ Total for Public Improvements = 290,000.00 $ Additional Public Roadway Improvements 19 Erosion Control Measures LS 1 1,000.00 $ 1,000.00 $ 20 Unclassified Earthwork (Cut & Fill) CY 70 8.00 $ 560.00 $ 21 6" Lime Stabilized Subgrade SY 400 5.00 $ 2,000.00 $ 22 Lime for Subgrade (35 lb/SY) TON 7 130.00 $ 910.00 $ 23 6" Reinforced Concrete Pavement SY 410 45.00 $ 18,450.00 $ 24 6" Attached Concrete Curb LF 260 8.00 $ 2,080.00 $ 25 4" Thick Reinforced Concrete Sidewalk SF 520 6.00 $ 3,120.00 $ 26 Solid Sod in Landscape Areas SY 140 5.00 $ 700.00 $ Subtotal = 28,820.00 $ 11% Contingency = 3,180.00 $ Total for Additional Public Roadway Improvements = 32,000.00 $ Additional Public Drainage Improvements 26 30" RCP Storm Drain LF 100 100.00 $ 10,000.00 $ 27 5'x5' J-Box EA 1 3,500.00 $ 3,500.00 $ 28 10' Curb Inlet EA 2 5,500.00 $ 11,000.00 $ 29 18" RCP Storm Drain LF 40 70.00 $ 2,800.00 $ Subtotal = 27,300.00 $ 14% Contingency = 3,700.00 $ Total for Additional Public Drainage Improvements =31,000.00 $ Total for Additional Public Improvements = 63,000.00 $ Engineer's OPINION of PROBABLE CONSTRUCTION COST Nolen Office Park - Phase 2 (4 Office Buildings) South Nolen Drive - Southlake, TX Page 1 of 2 BHB No. 2018.741.000 Baird, Hampton & Brown 3801 William D. Tate, Suite 500 Grapevine, TX 76051 Tel 817-251-8550, www.bhbinc.com 4/8/2019 No. Item Description Unit Quantity Unit Price Amount Engineer's OPINION of PROBABLE CONSTRUCTION COST Nolen Office Park - Phase 2 (4 Office Buildings) South Nolen Drive - Southlake, TX Estimated City Impact Fees 30 Transportation Impact fee (per 1,000 SF Office) GFA 12.5 1,833.00 $ 22,912.50 $ 31 Transportation Impact fee (per 1,000 SF Medical) GFA 14.5 4,391.25 $ 63,673.13 $ 32 Domestic Water Impact Fee (2" meter) EA 4 14,066.00 $ 56,264.00 $ 33 Irrigation Water Impact Fee (1" meter) EA 2 4,395.63$ 8,791.25 $ 34 Sanitary Sewer Impact Fee EA 4 8,350.00 $ 33,400.00 $ Subtotal = 185,040.88 $ Total for Estimated City Impact Fees = 185,000.00 $ PUBLIC IMPROVEMENTS 290,000.00 $ Public Roadway Improvements 184,000.00 $ Public Drainage Improvements 106,000.00 $ RECOMMENDED CREDIT FOR PUBLIC INFRASTRUCTURE 167,333.33 $ (33% Roadway Cost & 100% Drainage Cost) ESTIMATED CITY IMPACT FEES 185,000.00 $ ADDITIONAL PUBLIC IMPROVEMENTS IMPROVEMENTS REQUESTED 63,000.00 $ Public Roadway Improvements 32,000.00 $ Public Drainage Improvements 31,000.00 $ RECOMMENDED CREDIT FOR ADDITIONAL PUBLIC INFRASTRUCTURE REQUESTED 63,000.00 $ (100% Additional Roadway Cost & 100% Additional Drainage Cost) SUMMARY OF COST CREDIT PROPOSAL Page 2 of 2 D E T E N T I O N P O N D B U I L D I N G 2 O F F I C E 6 , 4 9 9 S F 1 - S T O R Y BUILDING 4OFFICE6,005 SF1-STORYBUILDING 3OFFICE6,504 SF1-STORY B U I L D I N G 1 O F F I C E 7 , 9 6 6 S F 1 - S T O R Y LOT 1-R-3, BLOCK 1GEORGETOWN PARKCABINET A, SLIDE 4041PRTCTOWNER: KB CARLTON, PLLCZONED: O1L.U.D.: RETAIL COMMERCIAL LOT 2, BLOCK 1GEORGETOWN PARKCABINET A, SLIDE 4216PRTCTOWNER: DOWNEY ENTERPRISES, LLCZONED: C2L.U.D.: RETAIL COMMERCIAL LOT 3-R-2, BLOCK 1GEORGETOWN PARKCABINET A, SLIDE 4476PRTCT CABINET A, SLIDE 735 0 PRTCT L O T 1 R , B L O C K 1 N O L E N C E N T E R C C # D 2 1 2 2 5 8 8 4 9 O P R T C T O W N E R : D C T N 3 3 7 3 S O U T H L A K E T X , L L C Z O N E D : S P 1 ( C 2 ) L . U . D . : R E T A I L C O M M E R C I A L ROGER GLENN WILLIAMS,RICHARD WAYNE WILLIAMS &RONALD EUGENE WILLIAMSCC# D209130872OPRTCTZONED: AGL.U.D.: MIXED USE L O T 1 , B L O C K 1 N O L E N O F F I C E P A R K A D D I T I O N C C # D 2 1 3 0 1 7 7 1 3 O P R T C T O W N E R : S O U T H L A K E P A I N P H Y S I C I A N S Z O N E D : S P 1 ( O 1 ) L . U . D . : M I X E D U S E LOT 4R-2, BLOCK 1GEORGETOWN PARKCABINET A, SLIDE 7350PRTCTOWNER: GRANTLAND PROPER T I E S , L L C ZONED: C2L.U.D.: RETAIL COMMERCI A L THOMAS EASTER SURVEY,ABSTRACT NO. 474 R E T A I N I N G W A L L COVEREDCONCRETETHREE FOOTSTONE WALLDUMPSTERPAD 10'X10'BUILDING V I L L A G E C E N T E R D R I V E ( 6 0 ' R i g h t - o f - W a y , S p e e d L i m i t = 3 0 m p h ) SOUTH NO L E N D R I V E (70' Right-of-Wa y , P o s t e d S p e e d L i m i t = 3 0 m p h ) N 8 9 ° 3 1 ' 1 2 " E 2 1 5 . 8 3 ' N89°35'06"E 285.14'N00°24'54"W 326.52'N89°09'06" E 3 6 0 . 5 9 ' C 3 N 7 3 ° 1 9 ' 4 4 " E 5 0 . 2 3 ' S00°27'34"E 165.34'C1 169.93'156.59' C 2 S O U T H N O L E N M E D I C A L I N V E S T M E N T S , L T D D 2 1 8 1 1 9 2 0 8 O P R T C T C O N N E C T T O E X . D R O P I N L E T P R O P . P R I V A T E O U T L E T S T R U C T U R E P R O P . 5 ' x 5 ' P U B L I C S D M A N H O L E P R O P . 5 ' x 5 ' P U B L I C S D M A N H O L E PROP. 5'x5' PUBLIC GRATE INLET P R O P . 1 0 ' P U B L I C C U R B I N L E T P R O P . 1 0 ' P U B L I C C U R B I N L E T P R O P . 5 ' P R I V A T E C U R B I N L E T P R O P . 5 ' P R I V A T E C U R B I N L E T FUTURE 10' CURB INLETFUTURE 10' CURB INLET 8 " x 6 " T E E 6 " G A T E V A L V E & B O X ± 5 L F O F 6 " W A T E R & P R O P . F I R E H Y D R A N T C O N N E C T T O E X . 8 " W A T E R EX. 8" W A T E R C O N N E C T T O E X . 8 " W A T E R : 8 " x 8 " T E E 8 " G A T E V A L V E & 8 " 4 5 ° B E N D 8"x8" TEE& 2 - 8" GATE VALVE & BOX ±830 LF OF PROP.8" PUBLIC WATER C O N N E C T T O E X . 8 " W A T E R 8 " x 6 " T E E , 8 " G A T E V A L V E & B O X 6 " G A T E V A L V E & B O X ± 5 L F O F 6 " W A T E R & P R O P . F I R E H Y D R A N T C O N N E C T T O E X . S E W E R W I T H P R O P . 4 ' D I A . P U B L I C S S M H P R O P . 4 ' D I A . P U B L I C S S M H PROP. PUBLIC4' DIA. S.S. MANHOLE ± 3 2 5 L F O F P R O P . 8 " P U B L I C S A N I T A R Y S E W E R 6 " F I R E P R O T E C T I O N S E R V I C E 2 " D O M E S T I C W A T E R S E R V I C E ±50 LF OF 4" PRIVATESANITARY SEWERSERVICE @ 2% MIN.±65 LF OF 4" PRIVATESANITARY SEWERSERVICE @ 2% MIN. ± 4 0 L F O F 1 8 " P U B L I C S T O R M D R A I N ± 3 5 L F O F 1 8 " P U B L I C S T O R M D R A I N E X . U T I L I T Y P O L E T O B E R E L O C A T E D P R O P . P R I V A T E G R A T E I N L E T ±210 LF O F P R O P . 12" PRI V A T E S D 8 " 4 5 ° B E N D 2 - 8 " 4 5 ° B E N D S 8"x8" TEE8" GATE VALVE & BOX8"x6" REDUCER6" GATE VALVE & BOX±42 LF OF 6" WATER& PROP. FIRE HYDRAN T E X . F I R E H Y D R A N T E X . F I R E H Y D R A N T 24' FIRELANE R 2 0 ' R 2 0 ' R 3 0 ' R 5 0 ' R30'R30'R20'R20'24' FIRELANE R 3 0 ' R 3 0 ' P R O P . 5 ' P R I V A T E C U R B I N L E T E X . 8 " W A T E R FUTURE 30" PUBLIC SD8" PLUG 2 - 8" 45° B E N D ± 5 0 L F O F 4 " P R I V A T E S A N I T A R Y S E W E R S E R V I C E @ 2 % M I N . ± 6 5 L F O F 4 " P R I V A T E S A N I T A R Y S E W E R S E R V I C E @ 2 % M I N . 6 " F I R E P R O T E C T I O N S E R V I C E 2 " D O M E S T I C W A T E R S E R V I C E 2 - 2" DOMESTIC WATER SERVICE2 - 6" FIRE PROTECTION SERVICE ± 6 4 0 L F O F P R O P . 3 0 " P U B L I C S T O R M D R A I N ± 1 6 5 L F O F P R O P . 1 8 " P R I V A T E S T O R M D R A I N P R O P . 5 ' x 5 ' P U B L I C S D M A N H O L E 24' FIRELANE F.D.C. F . D . C . F . D . C . F.D.C. 4 - 8 - 2 0 1 9 T H I S D O C U M E N T I S R E L E A S E D F O R T H E P U R P O S E O F I N T E R I M R E V I E W U N D E R T H E A U T H O R I T Y O F D A N I E L A . F R A N K L I N , P E T X 1 2 2 0 4 4 . I T I S N O T I N T E N D E D F O R C O N S T R U C T I O N , B I D D I N G , O R P E R M I T P U R P O S E S . 3801 William D. Tate, Suite 500 Grapevine, TX 76051 mail@bhbinc.com • 817.251.8550 • bhbinc.com TBPE Firm #44 • TBPLS FIRM #10011302NO.DESCRIPTION DATE D A T E : P R O J E C T N U M B E R : D R A W N B Y : C H E C K E D B Y : D E S I G N B Y : S H E E T OFFICE EQUITY SOLUTIONS 365 MIRON, SUITE. A SOUTHLAKE, TX 76092 NOLEN OFFICE PARK - PHASE 2 NOLEN OFFICE PARK ADDITION, LOT 1, BLOCK 2 S. NOLEN DRIVE, SOUTHLAKE, TX 76092 2 0 1 8 . 7 4 1 . 0 0 0 4.08.2019 2:57PM E:\2018.000.000\2018.741.000 Nolen Office Park_Phase 2 - Southlake\01 CADD\04 Civil\741OVERALL UTILITY PLAN.dwg 8 OVERALL UTILITY PLANNumberDeltaRadiusArc LengthChord BearingChord LengthC104°54'37"435.00'37.28'S01°59'44"W37.27'C212°17'39"435.00'93.34'S06°36'24"E93.16'Project Control:Elevations hereon are referenced to the Texascooperative RTK Network (NAVD 88).TBM #1 - Box cut on a curb inlet in the westright-of-way of South Nolen Drive approx. 20'northwest of property's northeast corner.N: 7,027,174.85E: 2,394,576.14ELEV: 656.99'TBM #2 - Box cut on a curb inlet in the westright-of-way of South Nolen Drive approx. 74'southeast of property's southeast corner.N: 7,026,792.39E: 2,394,627.57ELEV: 656.24'TBM #3 - "X" cut in parking lot approx. 97'northwest of property's southwest corner.N: 7,026,903.28E: 2,394,029.96ELEV: 676.41'TBM #4 - "X" cut on a curb inlet in the eastright-of-way of South Nolen Drive approx. 72' eastof property's southeast corner.N: 7,026,851.70E: 2,394,664.80ELEV: 657.02'SOUTHLAKE MONUMENT #5 - Published DataN: 7,031,484.856E: 2,395,243.638ELEV: 601.80'C315°49'22"370.00'102.18'N81°14'25"E101.85' Z A 1 8 - 0 0 6 1 N W S E OVERALL UTILITY PLAN 8 3 / 1 5 / 2 0 1 9 T M T M D A F 8 o f 2 2 G R A P H I C S C A L E : 1 " = 3 0 1 5 0 3 0 6 0 3 0 F e e t L E G E N D G E N E R A L N O T E S 1 . A L L L I N E S , G R A D E S , C O N S T R U C T I O N S T A K I N G A N D L A Y O U T S H A L L B E T H E R E S P O N S I B I L I T Y O F T H E C O N T R A C T O R . 2 . P R I O R T O B E G I N N I N G C O N S T R U C T I O N , C O N T R A C T O R S H A L L V E R I F Y A L L D I M E N S I O N S I N T H E F I E L D A N D R E P O R T A N Y D I S C R E P A N C I E S T O T H E O W N E R ' S A G E N T . 3 . C O N T R A C T O R S H A L L I M P L E M E N T A N D M A I N T A I N E R O S I O N A N D S E D I M E N T A T I O N C O N T R O L M E A S U R E S T H R O U G H O U T T H E C O N S T R U C T I O N P E R I O D . 4 . S E D I M E N T T H A T I S E R O D E D F R O M T H E C O N S T R U C T I O N S I T E A N D D E P O S I T E D O N T O A D J A C E N T P R O P E R T I E S S H A L L B E R E M O V E D B Y T H E C O N T R A C T O R A T C O N T R A C T O R ' S E X P E N S E . 5 . A L L D I M E N S I O N S A R E T O F A C E O F C U R B , E D G E O F P A V E M E N T , F A C E O F W A L L , O R F A C E O F C O N C R E T E B U I L D I N G F O O T I N G U N L E S S S H O W N O T H E R W I S E . 6 . A L L D I M E N S I O N S A R E P A R A L L E L O R P E R P E N D I C U L A R T O P R O P E R T Y L I N E S U N L E S S I N D I C A T E D O T H E R W I S E . 7 . E X I S T I N G U T I L I T Y D A T A I S P R O V I D E D F O R I N F O R M A T I O N O N L Y . A L T H O U G H S H O W N A S A C C U R A T E L Y A S P O S S I B L E , T H E C O N T R A C T O R I S R E S P O N S I B L E F O R C O O R D I N A T I N G W I T H M U N I C I P A L A N D F R A N C H I S E U T I L I T Y C O M P A N I E S A N D L O C A T I N G A L L U T I L I T I E S I N T H E F I E L D P R I O R T O C O N S T R U C T I O N . 8 . C O N T R A C T O R S H A L L C O O R D I N A T E A N D P A Y F O R A L L U T I L I T Y W O R K T O B E D O N E B Y F R A N C H I S E U T I L I T Y C O M P A N I E S . 9 . C O N T R A C T O R S H A L L P R O T E C T A L L E X I S T I N G U T I L I T I E S , O V E R H E A D U T I L I T Y P O L E S , A N D G U Y L I N E S T H R O U G H O U T C O N S T R U C T I O N . 1 0 . C O N T R A C T O R S H A L L C O N T A C T T E X A S 8 1 1 A T L E A S T 4 8 H O U R S P R I O R T O C O N S T R U C T I O N ( W W W . T E X A S 8 1 1 . O R G , T E L 8 0 0 - 3 4 4 - 8 3 7 7 ) . 1 1 . A L L M A T E R I A L S A N D W O R K M A N S H I P S H A L L C O N F O R M T O T H E L A T E S T S T A N D A R D S P E C I F I C A T I O N S F O R P U B L I C W O R K S C O N S T R U C T I O N F O R N O R T H C E N T R A L T E X A S A N D C I T Y C R I T E R I A . U T I L I T Y N O T E S 1 . C O N T R A C T O R S H A L L C O O R D I N A T E A L L U T I L I T Y W O R K T O B E D O N E B Y C I T Y F O R C E S A N D / O R F R A N C H I S E U T I L I T Y C O M P A N I E S . 2 . A L L U T I L I T Y C O N S T R U C T I O N S H A L L B E D O N E I N A C C O R D A N C E W I T H C U R R E N T E D I T I O N O F T H E N O R T H C E N T R A L T E X A S C O U N C I L O F G O V E R N M E N T S ( N C T C O G ) S T A N D A R D C O N S T R U C T I O N S P E C I F I C A T I O N S A N D D E T A I L S . 3 . P R I V A T E S A N I T A R Y S E W E R S E R V I C E S N E E D A P L U M B I N G P E R M I T A N D M U S T B E I N S P E C T E D B Y B U I L D I N G I N S P E C T I O N S P R I O R T O B U R I A L .