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HomeMy WebLinkAboutSite Utility StudyNNW MENNIMMIIMII AM.. // --.parr w.i.iri.r -- ......� 0181 — • I li 6 C nle Since 1989 CIVIL LAND DEVELOPbENT TRAFFIC AND TRANSPORTATION 900 B ISCAYN E MULTI USE DEVELOPMENT SITE UTILITY STUDY February 2004 8550 W. FLAGLER STREET, SUITE 113, MIAMI, FLORIDA 33144 TEL: (305) 551-6267 • FAX: (305) 551-4542 • • =▪ MMw INIIMINIMOIMME RI NM N INIMINIMINNEM ci Since 1989 1 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION TABLE OF CONTENTS Page 1. General 2 2. Storm Drainage System 4 3. Water Distribution System 6 4. Sewer Collection System 7 5. Solid Waste Generation 8 EXHIBITS: "A" Location Map 10 "B" Storm Drainage Well Calculations 11 "C" MD-WASD Atlas (Sewer) 18 M D_W AS D Atlas (Water) 19 Proposed Water Use Calculations 20 DERM Pump Station Monthly Report 29 "D" Solid Waste Generation Calculations 22 1 • • • (to ig 6 ® Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION 900 BISCAYNE-MULTI USE DEVELOPMENT SITE UTILITY STUDY General A. Project Location and size: The proposed project consists of a Multi -use Facility to be constructed at an approximately 1.45 acre downtown Miami. The project limits are: to the west NE 2nd Avenue, to the north NE 10th Street to the east Biscayne Blvd to the south NE 9th Street. All these being in Section 31, Township 53 South, Range 42 East, Miami - Dade County, Florida. B. Existing Conditions: The site in its present condition consists of seven different properties being used as commercial establishments totaling approximately 83,226 sf of usable space. 2 nIgi t uv®@ v' i' rn-ig 1 3j iI (E Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION C. The proposed project build -out will be as follows: Condominium Apartments 516 Units Office 50,000 sf Restaurant (7,000 sf) 250 Seats Commercial (Wellness Center) 30,000 Sf • • 3 • • s rwr •rwwMINIrrrt MNIMINIIMMINIMM M r `-IMIrrwNI 11111.111011011. =MENIIM rrrrrrr� ruommeni rr j \\ i +mr L a ® Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION 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 and the Florida Department of Transportation. 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 other than some possible inlet modifications associated with the street or sidewalk improvements. 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) Environmental Resources Permit (ERP) and The Florida Department Of Transportation (FDOT) requirements. This will be accomplished by means of deep drainage wells. No off- site run-off will be generated from the site. 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. 4 • • • w0MR V .. n J �rr� J V �c Since. 1989 CIVIL LAND DEVELOPNI%NT TRAFFIC AND TRANSPORTATION 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. 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 4 — 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". 5 V ®•n`zanc®ro'Rat nie- Since 1989 CIVIL LAND DEVELOPhNT TRAFFIC AND TRANSPORTATION 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 and an exiting 6-inch water main on NE 10th Street that run along the entire northerly boundary of the property. • Two existing 12-inch water mains on NE 2nd Avenue that run along the entire southerly boundary of the property. • An existing 24-inch and an existing 6-inch water main on Biscayne Blvd. that run along the entire easterly boundary of the property. • An existing 6" water main that runs along NE 9th Street that runs along the entire southerly boundary of the property. 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 may require additional system improvements to upgrade the 6" water main on NE 9th Street. 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 131,200 GPD is expected from this project. The previous flow demand from the existing hotel is 4,164 GPD. The net increase in demand from this project is 127,036 GPD. For determination of anticipated vows see Exhibit "C". 6 • • ® b Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTAT}ON 4. Sewer Collection 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 27-inch gravity sewer line along Biscayne Blvd. that runs along the entire easterly boundary of the project. • An existing 24-inch gravity sewer line along NE 10th Street that runs along the entire northerly boundary of the project. • An existing 8-inch gravity sewer line along NE 2 'd Avenue that runs along the entire westerly boundary of the project. • An existing 24-inch gravity sewer line along NE 9th Street that runs along the entire southerly boundary of the project. These lines collect all the sanitary flows from the general area and direct them to MD-WASD Pump Station # 30-0002. 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. No additional sanitary system improvements are expected. C. Transmission Capacity Requirements The Wastewater generated by this project will be conveyed to MD-WASD Regional Pump Station No. 30-0002. This is a major station with a yearly NAPOT of 3.86 hours per day according to DERM. (See Exhibit "C"). The current ET data as of 2-20-02 reflects 3.86. The impact of this project on the ET of this station is 0.09 hours. The expected ET will be 3.95 hours which is less than the allowed 10 hours. Pump Station No. 30-0002 at this time has sufficient available capacity to support this project. 7 IIIIMOIN111100.10 WAWA ram+ i1INN - .�.r•� —IIIIIIIIMIPMEMINIMM ITO In Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC 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-cyclables. 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 26 CY per day. (See Appendix "D"). w 8 111•1warr0.�.• MINIM1/"...WIII.AIIAIIIMII err. .rw11111111111= rw 111111 rr yn.rr11.1111111101 • @ilt gl n C 4 l p Th Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTA1 XN EXHIBIT "A" Location Map 9 • Asa TKAcr (81-z - aa 14(�+'`' `17) 13OUI.EYAR3> TRA 1 (goo --aej' .+IV. E.I•.m.43 thilowS (4- !45 )---<" W t N DSOI�td._.E1], ,pAPPAS SU- Al ow -I) ......�.�..!' ' (4 - 123 }--" ©t©griW©7©I 1I111:11CraiiiI; /r . =at2itMST • 0 • L U IF TERR +13 .Y[15XX w li ifi..ST 40 sp a 1.0 TO Zia NEW WORLD CENTER BICENTENNIAL PARK (140-50) PROJECT LOCATION *lc A R T H l CAUSE WA` StM 026 rrrrrrMIMINIMM 1111111MMINIIIMNI V17N.UNIIIMMOM rrr • Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "B" Storm Drainage Calculations 11 • • w wrMa 1111111101.0106.—.4 g i,!nIC` PiQ PROJECT NAME DRAINAGE AREA: Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION 900 BISCAYNE 2/19/2004 ENTIRE SITE Page 1 SITE DATA: SITE AREA = 1.45 ACRES BUILDING FOOT PRINT = 450 FT BUILDING HIGHT = 400 FT BUILDING WALL AREA = 4.13 ACRES CONTRIBUTING BUILDING AREA = 1.24 ACRES CONTRIBUTING AREA = 2.69 ACRES NUMBER OF WELLS = 4 REQUIRED VOLUME FOR 90 SEC. DETENTION TIME (PER WELL): CONTRIBUTING AREA PER WELL = 0.67 ACRES RAINFALL INTENSITY (90 SEC) = 6.4 IN/FIR RUN OFF VOLUME (90 SEC) = 349 CF DETENTION VOLUME PROVIDED: TANK LENGTH = 13.00 FT TANK WIDTH = 6.00 FT TANK BOTTOM ELEV = -2.50 NGVD TOP OF WELL CASING ELEV = 2.50 NGVD FT STORAGE DEPTH = 5.00CF DETENTION VOL PROVIDED = (per welt) 390 TOTAL DETENTION VOLUME = 1,560 CF 12 • • UNAqRj {r/ ....IIMM..INE. MOM illOOMMINIIIMIN MINOR r-71rw1M11ri INIMB *In tinl® Since 1989 PROJECT NAME DRAINAGE AREA: DRAINAGE WELL DATA: CIVIL LAND DEVELOP1YENT TRAFFIC AND TRANSPORTATION 900 BISCAYNE 2/19/2004 ENTIRE SITE Page 2 WELL DIAMETER = WELL DISCHARGE RATE PER FT OF HEAD = AVAILABLE HEAD = DISCHARGE RATE PER WELL = 24 INCHES 750 GPM 2.00 FT 1,500 GPM CUMULATIVE INFLOW/OUTFLOW DATA: STORM FREQUENCY = 5 YEARS 0.95 C FACTOR DRAINAGE AREA = 2.69 ACRES4 # OF WELLS PROVIDED Ot} GPM TOTAL DISCHARGE RATE = g ,D0 GP TOTAL DISCHARGE RATE = 1,56013.0CF FS SEDIMENT TANK STORAGE =0 CF F.D. STORAGE = 0 CF SOLID PIPE. STORAGE _ INFLOW-EXFILTRATION TABLE TIME MIN 8 10 15 20 30 40 60 90 120 150 180 INTEN. IN/HR 6.41 6.17 5.64 5.20 4.50 3.96 3.20 2.48 2.03 1.71 1.48 CUM.INFLOW CF 7858 9457 12979 15949 20682 24265 29409 34222 37272 39378 40919 SYST. STO. CF 1560 1560 1560 1560 1560 1560 1560 1560 1560 1560 1560 ADJ. INFL. CF 6298 7897 11419 14389 19122 22725 27849 32662 35712 37818 39359 WELL DISCH. OVERFLOW CF CFS 6417 8021 12032 16043 24064 32086 48128 72193 96257 120321 144385 -0.25 -0.21 -0.68 -1.38 -2.75 -3.90 -5.63 -7.32 -8.41 -9.17 -9.72 13 • • VOLUME (CF) 160000 140000 120000 100000 80000 60000 40000 20000 CUMULATIVE INFLOW-EXFILTRATION WELL DISCHARGE 6,000 GPM ADJUSTED INFLOW 0 20 40 60 80 100 120 140 160 180 200 TIME (MIN) IMIIIIMIIMINE • ®j® nig b n®®P c g Since 1989 CIVIL LAND DEVELOPMENT 'TRAFFIC AND 'TRANSPORTATION STORMWATER WELL STAGE ANALYSIS 900 BISCAYNE DATE: 2/1912004 CONTRIBUTING AREA DATA: SITE AREA = 1.45 ACRES BUILDING FOOT PRINT = 450 FT BUILDING HIGHT = 400 FT BUILDING WALL AREA = 4.13 ACRES CONTRIBUTING BUILDING AREA = 1.24 ACRES CONTRIBUTING AREA = 2.69 ACRES LOWEST ADJACENT GRADE = 5.50 NGVD RUN OFF COEFFICIENT = 0.95 WELL DATA: WELL DISCHARGE RATE PER FT OF HEAD = 750 gpm NUMBER OF WELLS = 4 TOTAL WELL DISCHARGE RATE PER FT OF HEAD = 31000052 NGVD MEAN HIGH TIDE ELEVATION [MN= 24 IN WELL DIAMETER = 1 FT SPECIFIC GRAVITY LOSS [SG) 15 1110011111.111111 @FnIg Da@ ,E"g=o1JI Inc 1111.1 Since 1989 CIVIL LAND DEVELOPMENT TRAFFEC AND TRANSPORTATION STORMWATER WELL STAGE ANALYSIS 900 BISCAYNE DATE: 2/19/2004 DESIGN STORM RAINFALL INTENSITY [inihr] PEAK RUNOFF [cis] WELL HEAD D [ ] SG + MH [ ] STAGE NGVD] CRITICAL STAGE (NGVD] 5 yr- 24 hr 25yr- 72 hr 100 yr- 72 hr 6.17 6.98 7.44 15.77 17.84 19.01 2.36 2.67 2.84 2.52 2.52 2.52 4.88 5.19 5.36 5.50 5.50 5.50 The four wells will be interconnected to be able to equalize the developed head. The maximum Stage of 5.36 will not exceed the adjacent elevations and will be sufficient to maintain the flow within the property. 16 �rrt ummusimisomen • g ® Since 1989 CIVIL LAND DEVELOPA€NT TRAFFIC AND TRANSPORTATION EXHIBIT "C" MD-WASD Atlas (Sewer) MD-WASD Atlas (Water) Proposed Water Use Calculations DERM Pump Station 30-0001 Monthly Information 17 ?2' _ER ,k-1134' WE A '70506 \ Nev LU I 40P OVER\ 12 LJcJ 6" 36 9 ) 11 370 ) 1 s- 1 1 —tr I-JOP OVER, 1 09 9 6 3 ) 0 NE 11 TER \\ IWE N E 11 ST 6' PROJECT LOCATION w )9 6 3 7 2 -1E3- 11°9 \PVF r- ,--140P OVER NE 8 ST 9219 F 1 • 16" ( 9219 ) c3 24 \ ...• ;,,,-. - xx .)Ni. ''"..- ,..7\:,:c...1K -r- \ t/OP OVER — 17 1 1 BI DET t-UP 01,717 MD-WASD WATER ATLAS 12N ( 4 cr "-• 4 P OVER 1 ( tN1 8 5 1 8 378 NE 11 • La • 379 3346 1 ,) 7-3 8 3 NE 10 ST 81 13348 137137 NE *fli ST -{OP OVER / 3314 1 lice own (333 5 •.\\ 1 3813 �18 339 J 1 J 4.._ r`f HOP \ \ NE 9 ST (392 % PROJECT LOCATION '! • HOP OVE 2 '-64 6b4:„ 4 9 t3 MD-WASD SEWER ATLAS 19 rra �arw�r�+ • • 2 Since 1989 CIVIL LAND DEVELOPMENT TRAFFiC AND TRANSPORTATION PROPOSED WATER USE CALCULATIONS PROJECT 900 Biscayne Blvd. DATE: 18-Feb-04 TYPE OF BUILDING USE AREA [sf] [units] RATE [gpdisf] [gpdiunit] ADF [Npd] PROPOSED FLOWS: PHASE ONE: CONDOMINIUM APARTMENTS 516 200 103,200 OFFICE 50,000 0.10 5,000 RESTAURANT (7,000 SF) 250 50 12,500 COMMERCIAL (Wellness Center) 30,000 0.35 10,500 SUB -TOTAL 131,200 PREVIOUS FLOWS: RETAIL 83,276 0 4,164 SUB -TOTAL 44 -64 NET INCREASE: 127,036 20 • Pump Station Monthly Information Station..30 -0002 Atlas Pg..E13 MIAMI DADE WATER & SEWER DEPARTMENT Addr..925 BISCAYNE BLVD Sec -Township -Range 31-53-42 Geer._ ET clock.Y Telm.Y #Pumps. 5 Pump Type.A Stn Class.M Speed.R Hrspwr.+ Res flow(gpd) Plans.. 1,568,117 Plats.. 0 Extens. 0 Prod Napot 3.86 hrs 2.77 hrs 2.77 hrs Casa p38.60 27.70 27.70 Date Mo.NAPOT Avg Daily Flows 01/28/2004 12/26/2003 11/21/2003 10/23/2003 09/24/2003 08/25/2003 07/25/2003 AIKLID/m LD/D GOLD/G • <Plan Review> Moratorium. .OK Moratorium effective since / / Yearly NAPOT (hrs) Stn Gross Capacity(gpd).. Station Reduction Factor Stn Net Cap Certif (gpd) . Stn. Net Capacity(gpd) Indicated Flows(gpd) 2.77 57,600,000 0.60 0 34,560,000 3,988,800 Rgd # Fig Pmp Y 5 3.00 11.99 0.00 3.22 12.89 0.00 Y 5 3.71 14.83 0.00 Y 5 3.81 15.25 0.00 Y 5 3.38 13.53 0.00 Y 5 3.11 12.42 0.00 Y 5 2.62 10.46 0.00 Y 5 Signature. LEALG Sign Date..43l17/2043 13:52:24.01 GOLD/U Station i<m>provemeft GOLD/S <S>tation Inform- GOLD/P <P>pstreamoStation <D>ownstream Station Codes & Cata<g>ori.es GOLD/T Sewer Cer<t>ification Comments 21 1 I ! • *2004022010303581*DEARK3 ent. M Stat Station Station Current Delta Projected R Type Owner Number ET (Hrs) ET (Hrs) ET (Hrs) Proposed Number of gallons (gpd) : 127036 Downstream Stations ***** ***********************-* OC ASRt�i3.86 0.09 3.95 AC 30 CD 30 0002 1002.06 0.02 1002.08 AC 30 RS 1002.04 0.01 1002.05 RS95APR 1001.76 0.01 1001.77 IN 30 TN 30 RS94MAR 1001.90 0.01 1001.91 • • This is not an official docum 22 f IMan 01111Mw rr11MME■ MES • • IT Since 1989 CIVIL ry LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "D" Solid Waste Generation Calculations 23 • • {g niC Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION PROPOSED SOLID WASTE CALCULATIONS PROJECT 900 BISCAYNE BLVD DATE: 18-Feb-04 TYPE OF BUILDING USE AREA/UNITS [sf] (seats] RATE [lblsf] [Ib/seat] SOLID WASTE GENERATED [lb] SOLID WASTE GENERATED [tons] APARTMENT UNITS RETAIL RESTAURANT OFFICE 516 30,000 250 50,000 8 0.025 5 0.025 4,128 750 1,250 1,250 2.06 0.38 0.63 0.63 NET INCREASE: 7,378 3.69 ANTICIPATED SOLID WASTE VOLUME AT 7 CY PER Ti 26 CY / DAY 24