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Home My WebLink AboutTAB O - Site Utility StudyJan 20 06 11:10a VSN ENGINEERING MM. 11,-MIWINWM WwWWWIMI MONIMMW-011 MID WOW Vila lel el' Since 1989 3055514542 GIVIL LAND DEVELO?t H1' ThAPFIC AND TRANSPORTATION CITY SQUARE MULTI USE DEVELOPMENT SITE UTILITY STUDY January2006 8550 W. FLAGLER STREET, SUITE 113, MMAMt, FLORIDA 33144 TEL; (305) 5514267FAX: (305) 551-4542 Email: vsnacvsneng.com p.2 Jan 20 OB 11:11a VSN ENGINEERING wooserimwm laismNiNg promos 'ogions miumerimb— siormimmi 111:1: 111111121 Barite 1989 3055514542 CIVIL LAND DEVELOPhENT TRAFFIC AND TRANSPORTKDON TABLE OF CONTENTS Page 1. General 2 2. Storm Drainage System 3 3. Water Distribution System 5 4. Sewer Collection System 6 5. Solid Waste Generation 7 EXHIBITS: "A" Location Map 10 "B" Storm Drainage Well Calculations 11 "C" MD-WASD Atlas (Sewer) 16 MD_WASD Atlas (Water) 17 Proposed Water Use Calculations 18 DERM Pump Station Monthly Report 19 "D" Solid Waste Generation Calculations 21 P 3 1 Jan 20 06 11:11a VSN ENGINEERING Inc 11 3055514E42 4ML LAND DEVELOP#VNT TRAFFIC AHD 'TRANBPORTAT ON Since i 989 CITY SQUARE- MULTI USE DEVELOPMENT SITE UTILITY STUDY 1. General A. Project Location and size: The proposed project consists of a Multi -use Facility to be constructed at an approximately 6.50 acre site in downtown Miami. The project limits are: to the east Herald Plaza (NE Bayshore Place) to the NE 13th Street to the west North Bayshore Drive to the north NE 15th Street The property being in Section 31, Township 53 South, Range 42 East Mianii- Dade County, Florida. B. Existing Conditions: This property in its existing conditions is being used as an existing 25,427 sf Commercial -Mixed Use Building. This building will be demolished to allow for the construction of the new project. C. The proposed project build -out will be as follows: Condominium Apartments 985 Units Retail 542,728 sf Restaurants (25,000 sf) 750 seats p. 4 2 Jan 20 06 11:11a VSN ENGINEERING Weino P Since 1989 3055514542 p.5 CIVIL LAND DEVELOPMENT TRAFFIC AND TRI NSPORTAIION 2. Storm Drainage System A. Existing Storm Drainage System: Roadway storm drainage systems presently exist along the streets surrounding the proposed project. These systems are owned and maintained by the City of Miami. The site, in its existing or proposed conditions, does not or will not contribute any significant amount of storm water run-off into the Public Roadway System. No significant improvements to the existing Roadway Drainage System are expected as a result of this project. B. Proposed On -Site Storm Drainage System: The proposed storm drainage system to serve this project will be designed to fully contain on -site the storm water run-off and to meet the Miami - Dade County Department of Environmental Resources Management (DERM) requirements. This will be accomplished by means of deep drainage wells. No off- site run-off will be generated from this project. The total contributing site area and 30% of the building wall area exposed to the rain will be included in the Disposal Well System design calculations. An impervious coefficient of 0.95 will be used for the purpose of this study. Based on information provided by an experienced well drilling company for other projects in the vicinity, an approximate well discharge rate 750 gpm per foot of head can be expected. Storm water from roofs, internal driveways, walkways and parking areas will be conveyed by means of a collection system to sediment tanks sized to meet the detention volume requirements prior to discharging into the Well System, Additional Water Quality pre-treatment and Pollution Retardant Baffles at the catch basins will be provided at areas subject to vehicle traffic. 3 Jan 20 06 11:11a VSN ENGINEERING a fl0 0 ID ff riToir Since 1989 3055514542 CML LAND DEVELOPI&NT 'TRAFFIC AND TRAMPORTAT1OH C. Required number of Wells: The proposed wells will be designed to maintain the site dry during the 5 year-24 hour storm, to keep flooding below the perimeter grades during the 25 year-3 day storm and to keep flooding below the minimum floor elevation during the 100 year- 3 day storm. Based on the attached calculations, a total of 8 — 24" diameter storm drainage wells are required to provide full on -site retention for this project depending on the actual yields obtained during the well drilling operations. For Well Disposal System calculations refer to attached Exhibit "B". P• G 4 Jan 20 OG 11;12a VSN ENGINEERING 11) c T' 09 416 [0 1 ao- E Since 1989 30S5514542 CIVIL LAND DEVELOPMENT TRAFFIC AND T11ANSPORTATION 3. Water Distribution System A. Existing Water System Facilities: Miami -Dade Water & Sewer Department (MD-WASD) owns and operates the following domestic water facilities in the vicinity of this project: • An existing 12-inch water main on NE Bayshore Place (Herald Plaza) that runs along .the entire easterly boundary of the project. • • An existing 24-Inch water main on NE 15th Street that runs along the entire northerly boundary of the project. • An existing 24-inch and an existing 6" water main on N. Bayshore Drive that run along the entire westerly boundary of the project. • An existing 6-inch and an existing 4" water main that runs within the development's property that needs to be removed. • An existing 36-inch transmission water main on NE 13th Street that nuns along the entire southerly boundary of the project. These existing water mains can be used to provide fire protection domestic and landscape irrigation service for this project. B. Required Water System Improvements: Based on the records provided by Miami -Dade Water and Sewer Department (MD-WASD) the existing water mains appear to be adequate to support the proposed development. MD-WASD Infill Committee will make an evaluation of the system and may require additional system improvements. This will be determined during final design. C. Anticipated water use: The water use requirements for this project are calculated based on the build -out information previously described. An anticipated flow demand of 261,636 GPD is expected from this project. The previous flows are approximately 2,543 GPD. The expected net increase is 259,094 GPD. For determination of anticipated flows see Exhibit "C". p.7 5 • Jars 20 06 11:12a VSN ENGINEERING tip rrst 111 Since 1989 m 0 3055514542 LAND DEVELOPMENT TRAflC AND T ANCPORTAUUDli 4. Sewer Collect* System A. Existing Sanitary Sewer System Facilities: Miami -Dade Water & Sewer Department (MD-WASD) owns and operates the following sanitary sewer facilities in the vicinity of this project: • An existing 10-inch gravity sewer line along Herald Plaza that runs along a portion of the Westerly boundary of the project. This line connects to an existing 12-inch gravity line that runs west along NE 14th Street. • An existing 12-inch gravity sewer line along N. Bayshore Drive that runs along a portion of the west side of the project. • An existing 72-inch gravity sewer interceptor along N. Bayshore drive that runs along the entire westerly portion of the property. These existing sewer mains can be used to provide service for this project. These lines collect all the sanitary flows from the general area and direct them to MD-WASD Purnp Station # 30-002. B. Required Sanitary Sewer System requirements: Based on the records provided by Miami -Dade Water and Sewer Department (MD-WASD) the existing sewer mains appear to be adequate to support the proposed development. The Sanitary Sewer System in the vicinity of this project will have to be evaluated by the MD-WASD to determine if additional improvements may be required. That will be done at the time of permitting. p. 8 6 Jan 20 06 11:12a VSN ENGINEERING 3055514542 p.9 ea OP A6 Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TAI PORTAi N C. Transmission Capacity Requirements The Wastewater generated by this project will be conveyed to MD-WASD Regional Pump Station No. 30-002. This is a major station with a yearly NAPOT of 4,65 hours per day as of November 2005 according to DERM. (See Exhibit "C"). Pump Station No_ 30-002 at this time has sufficient available capacity to support this project. 7 Jan 20 08 11:13a VSN ENGINEERING 3055514542 p.10 DS 2 r f 0 6 Since 1989 CIVIL LAND DEVELOPMENT TROPIC AND TRANSPORTATION 5. Solid Waste Generation A. Solid Waste Generated by this project will be collected in standardized on - site containers for refuse and re-cyciables. Either hauling companies and/or the City of Miami Solid Waste Department will provide regular pick- up services. The anticipated daily solid waste generation for this project is 78 CY per day. (See Appendix "D"). 8 Jan 20 06 11:13a VSN ENGINEERING 3055514542 p.11 Oi at 9f1 Q1 Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "A" LOCATION PLAN Jan 20 06 11:13a VSN ENGINEERING N.E.14Dt STRZCI `(E 1)Ih RE.1U LOCATION SKETCH NOT TO SCALE 3055514542 p.12 PROJECT LOCATION uj 0 10 Jan 20 0S 11:13a VSN ENGIMEERING 3055514542 p.13 irD nit a au 5 39 Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "B" Storrs Drainage Calculations 11 Jar, 20 05 11:14a VSN ENGINEERING 3055514542 p.14 _.-- mmt . mmammon wales mmim. i,3rrrrrI ' 11°1 Since 1989 PROJECT NAME DRAINAGE -AREA: - CM.. LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION CITY SQUARE 11712006 ENTIRE SITE Pago 1 SITE DATA: SITE AREA = 6.50 ACRES BUILDING F007 PRINT = 450 FT BUILDING HIGHT = 400 FT BUILDING WALL AREA = 4.13 ACRES CONTRIBUTING BUILDING AREA= 1.24 ACRES CONTRIBUTING AREA = 7.74 ACRES NUMBER OF WELLS = 8 REQUIRED VOLUME FOR 90 SEC. DETENTION TIME (PER WELL): CONTRIBUTING AREA PER WELL = 0.97 ACRES RAINFALL INTENSITY (90 SEC) = 6.4 INIHR RUN OFF VOLUME (90 SEC) = 502 CF DETENTION VOLUME PROVIDED: TANK LENGTH = 16.00 FT TANK WIDTH = 7.00 FT TANK BOTTOM ELEV = -2.50 NOVO TOP OF WELL CASING ELEV = 2.50 NGVC STORAGE DEPTH = 5.00 FT DETENTION VOL PROVIDED = (per well) 560 CF TOTAL DETENTION VOLUME = 4,480 CF 12 Jan 20 OB 11:14a VSN ENGINEERING MR MMWMMEM BMIIMMOMMIS MMOMM mm lilliMINNIINNE Ulm I® a Since 1989 PROJECT NAME DRAINAGE AREA: DRAINAGE WELL DATA: CITY SQUARE ENTIRE SITE W ELL DIAMETER it WELL DISCHARGE RATE PER FT OF HEAD = AVAILABLE HEAD = DISCHARGE RATS PER WELL = 3055514542 p. 15 CIVIL LAND DEVELDPMENT TRAFRC AND TRANSPORTATION 1/7/2006 Page Z 24 INCHES 750 GPM 3.00 FT 2,250 GPM CUMULATIVE INFLOW/OUTFLOW DATA: STORM FREQUENCY = 6 YEARS C FACTOR 0.95 DRAINAGE AREA = 7.74 ACRES # OF WELLS PROVIDED 8 TOTAL DISCHARGE RATE it 18,000 GPM TOTAL DISCHARGE RATE = 40.11 CFS SEDIMENT TANK STORAGE = 4,480 CF F.D. STORAGE = 0 CF SOLID PIPE STORAGE = 0 CF TIME MIN 8 10 15 20 30 40 60 90 120 150 180 1NTEN. INIHR 6.41 6.17 5.64 5.20 4.50 3.96 3.20 2.48 2.03 1.71 1.46 INFLOW-EXFILTRATION TABLE CUM.INFLOW CF 22811 27214 37349 45898 59514 69863 84626 98476 107252 113312 117747 SYST.STO. CF 4480 4480 4480 4480 4480 44130 4480 4480 4480 4480 4480 ADJ. INFL. CF 18131 22734 32869 41416 55034 85403 80146 93996 102772 108832 113267 WELL D18CH. CF 19251 24064 36096 48128 72193 96257 144385 216578 288770 360983 433155 OVERFLOW CFS -2.33 -2.22 -3.59 -5.59 -9.53 -12,86 -17.84 -22.70 -25.83 -28.01 -29.62 13 CUMULATIVE INFLOW-EXFILTRATION 500000 450000 400000 350000 300000 u_ 0 m. 250000 - J • 200000 150000 100000 50000 WELL DISCHARGE 40.11 CFS 0 1 0 20 40 60 80 .0° CUMULATIVE INFLOW 100 TIME (MIN) 120 140 160 160 200 SIN112133WISW3 NSA EirSirISSSOS Jan 20 06 11:15a VSN ENGINEERING In c Since 1989 3055514542 p. 17 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "C" MD-WASD Sewer Atlas MD-WASD Water Atlas Proposed Water Use Calculations DERM Purnp Station 30-002 Status 15 • Jan 20 OG 11:15a VSN ENGINEERING 3055514542 p.IB MD-WASD SEWER ATLAS 16 Jan 20 06 11:15a VSN ENGINEERING I A2 a------- 43868)- 'VP...OVER R..- rt /3 r" Sr. 3055514542 p.IS MD-WASD WATER ATLAS 0 SI 1 7 Jan 20 06 11:15a V r IlINIM_r_ VSN ENGINEERING 3055514542 p.20 CIVIL LAND DEVELLPhENT TRAFFIC AND'I'R&NSt ORTATIDN Since 1989 PROPOSED WATER USE CALCULATIONS PROJECT CITY SQUARE DATE: 10-Jan-06 TYPE OF BUILDING USE AREA [sf] lunits1 RATE [9Pdisfj [9pd/unij ADF Nod] , PROPOSED FLOWS: Residential Condominiums 985 200 197,000 Retail 542,728 ' 0.05 27,136 Restaurants {25,000 sf, 750 seats) 750 50.00 37,500 SUB -TOTAL 261.636 PREVIOUS FLOWS: Commercial 25,427 0.10 2,543 • SUB -TOTAL 2.543 NET INCREASE: _ 259,094 8550 Vv. FLAGLER STREET, SUITE 113, M1AM1, FLORIDA 33144 TEL: (305) 551.6267 • FAX: (305) 551.4542 E-mail: van@vsnene.cam 18 Jan 20 0S 11:16a VSN ENGINEERING *2005110211183977*DEARMM ent. * M Stat Station Station R Type Owner Number Proposed Number of gallons (gpd): 109531 * ** * * r***,r*********• Downstream OK A5RM+ 30 0002 AC 30 CD 3055514542 p.21 * This is not an official doctun Current Delta projected ET (Hrs) ET (Hrs) ET (airs) Stations **************************** 4.65 0.08 1.73 1001.97 0.02 1001.99 19 Jan 20 06 11:1Sa VSN ENGINEERING M EN 2 6 b 911 Since 1989 3055514542 p.22 CIVIL LAID DEVELOPMENT TRAFFIC ARD TRAIISPORTATbN EXHIBIT "D" Solid Waste Generation Calculations 20 Jan 20 06 11:16a VSN ENGINEERING 1 Im 2 8 6 0 IA c Sense 1989 3055514542 p.23 OWL UWD DEVE.OPAENT TRAFNQ AND TRANSPORTATION PROPOSED SOLID WASTE CALCULATIONS PROJECT CITY SQUARE DATE: 19-Jan-06 TYPE OF BUILDING USE AREA/UNITS [sf] Iseatsj RATE [Ib/s9 ilb/seat] SOLID WASTE GENERATED [Ibj SOLID WASTE GENERATED [tons] PROPOSED BUILDING: - APARTMENT UNITS 985 8 7,880 3.94 RETAIL 542,728 0.025 13,568 6.78 RESTAURANTS 750 1.00 750 0.38 • NET INCREASE: 22,198 . 11.10 ANTICIPATED SOLID WASTE VOLUME AT 7 CY PER Ti 78 CY 1 DAY 21 8559 W. FLAG LER STREET, SUITE 113, MIAMI, FLORIDA 33144 TEL: (305) 551.6267 • EAX: (305) 5514542 E•ma!!: vsnevsneng.com