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HomeMy WebLinkAboutTab 3 - Site Utility StudyTAB 3 ®,GAL II Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION ALTOS POINTE MULTI USE DEVELOP i ENT SITE UTILITY STUDY MARCH 2007 8550 W. FLAGLER STREET, SUITE 113, MIAMI, FLORIDA 33144 TEL: (305) 551 6267 * FAX: (305) 551-4542 F-mail- vn(n)vcnann rnm I �. .--411/11/1111111111I■ MEI [ID o11 Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION TABLE OF CONTENTS Page 1. General 3 2. Storm Drainage System 4 3. Water Distribution System 6 4. Sewer Collection System 7 5. Solid Waste Generation 9 EXHIBITS: "A" Location Map 10 "B" Storm Drainage Well Calculations 12 "C" MD-WASD Atlas (Sewer) 17 MD_WASD Atlas (Water) 18 Proposed Water Use Calculations 19 DERM Pump Station Monthly Report 20 Solid Waste Generation Calculations 21 2 MEI 1. General Ott mim 0 Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION PUNTA DIAMANTE SITE UTILITY STUDY A. Project Location and size: The proposed project consists of a Multi -use Facility to be constructed at an approximately net area of 0.99 acre in the City of Miami. (See Exhibit "A") The project limits are: to the west SW 22nd Avenue, to the north SW 5st Street to the east Private Property (Commercial) to the south SW 6th Street. The property being in Section 3, Township 54 South, Range 41 East, Miami - Dade County, Florida. B. Existing Conditions: The entire site consists of 6 different lots. In its existing condition these lots are being used as retail and commercial establishments. C. The proposed project build -out will be as follows: Condominium Apartments 163 Units Retail 15,500 sf Office 8,500 sf 3 .IR ..,��. 6 Ihl Since 1989 2. Storm Drainage System A. Existing Storm Drainage System: CML LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION 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 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) 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. Based on information provided by an experienced well drilling company for other projects in the vicinity, an approximate well discharge rate 500 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. raw Ihl Pil Qil Since 1989 C. Required number of Wells: CIVIL LAND DEVELOPMENT 'TRAFFIC AND TRANSPORTATION 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, one (1) — 24" diameter storm drainage well is 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 a 0 w Since 1989 3. Water Distribution System A. Existing Water System Facilities: CIVIL LAND DEVELOPtIENT TRAFFIC AND TRANSPORTATION Miami -Dade Water & Sewer Department (MD-WASD) owns and operates the following water main facilities in the vicinity of this project: • An existing 8-inch water main on SW 22n`t Avenue that run along the entire westerly boundary of the property. • An existing 2-inch water main on an alley that run along the entire easterly boundary of the property. • An existing 2-inch water main on SW 6th Street that run along the entire southerly boundary of the property. • An existing 2-inch water main on SW 5th Street that runs along the entire northerly boundary of the property. These existing water mains may not be of sufficient to provide fire protection, domestic and landscape irrigation service for this project. This project will have to be reviewed by the . MD-WASD to determine any necessary improvements. That will be done at the time of permitting. B. Required Water System Improvements: Based on the records provided by Miami -Dade Water and Sewer Department (MD-WASD) there may be a need to serve this property with a 12-inch water main depending on the system pressures. MD-WASD may require additional system improvements to meet the project requirements. 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 34,575 GPD is expected from this project. The previous flow demand from the existing buildings is 2,200 GPD. The net increase in demand from this project is 32,375 GPD. For determination of anticipated flows see Exhibit "C". 6 0 QD a 919 Since 1989 CIVIL LAND DEVELOMENT TRAFFIC AND TRANSPORTATION 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 8-inch gravity sewer line on SW 5th Street that runs from SW 22nd Avenue to the east along the northerly boundary of the project. • An existing 8-inch gravity sewer line along alley that runs north along the entire easterly boundary of the project. • An existing 8-inch gravity sewer line along SW 6th Street that runs west 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 # 30-0001 and # 30-0056. 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. a Vil Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION C. Transmission Capacity Requirements The Wastewater generated by this project will be conveyed to MD-WASD Pump Station # 30-0056. This pump station runs at a yearly NAPOT of 3.27 hours per day as of 1/29/07, according to DERM. The impact of this project on the ET of this station is 0.29 hours. The expected ET will be 3.56 hours which is less than the allowed 10 hours. The downstream Pump Station will be MD-WASD Regional Pump Station No. 30-0001. This is a major station with a yearly NAPOT of 6.25 hours per day as of 1/29/07, according to DERM. (See Exhibit "C"). The impact of this project on the ET of this station is 0.01 hours. The expected ET will be 6.26 hours which is less than the allowed 10 hours. Pump Stations No. 30-0001 and No. 30-0056 at this time have sufficient available capacity to support this project. 8 !WV - MIN ��InVIINN ® n g 6Inle P 1 lI 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 7 CY per day. (See Appendix "D"). 9 a �0� oi. » a OD Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "A" LOCATION MAP 1 0 - JO -- 25.07 Y 4 1—S7W.5TH S REET N- ff O 1D00' ALLEY (P.C. 9. PC. 21) 0.CSC0. vACAI1. AAD 04000000XD — -Two-oso -a'r M[r.&7�. M sr. n6 PL-G0.0406A BCC:unw 0 VACANT n78S-AffEA=5278G7b30. tT 0.99 ACRES +1- M45'20' MOD' 39.1D' BLOCK 3 P1595P'2'*. w .Di' ((CALL t2.oR't (k!Eh4 1C0' ALLEY (P9. D. PG 26 • CD, VACATED. .9 IN .tE➢ (CM P 1C 022 CDC 2222 AS 16612 2652t111121 C-06-0126 1 LOCATION MAP I� II 1 1 i , 1 1 1 1 1 11 Mi lJr7IIIIMINI 0 Utl Pil Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION EXHIBIT "B" STORM DRAINAGE CALCULATIONS 12 1 �11 O11 UA mis P Since 1989 PROJECT NAME DRAINAGE AREA: CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION PUNTA DIAMANTE 1/25/2007 ENTIRE SITE Page 1 SITE DATA: SITE AREA = 0.99 ACRES BUILDING FOOT PRINT = 200 FT BUILDING HIGHT = 175 FT BUILDING WALL AREA = 0.80 ACRES CONTRIBUTING BUILDING AREA = 0.24 ACRES CONTRIBUTING AREA = 1.23 ACRES NUMBER OF WELLS = 1 REQUIRED VOLUME FOR 90 SEC. DETENTION TIME: CONTRIBUTING AREA PER WELL = 1.23 ACRES RAINFALL INTENSITY (90 SEC) = 6.4 IN/HR RUN OFF VOLUME (90 SEC) = 674 CF DETENTION VOLUME PROVIDED: TANK LENGTH = 16.00 FT TANK WIDTH = 7.50 FT TANK BOTTOM ELEV = 2.50 NGVD TOP OF WELL CASING ELEV = 8.50 NGVD STORAGE DEPTH = 6.00 FT DETENTION VOL PROVIDED = (per well) 720 CF TOTAL DETENTION VOLUME = 720 CF 13 sP 6 6 Since 1989 CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION PROJECT NAME PUNTA DIAMANTE 1/25/2007 DRAINAGE AREA: ENTIRE SITE Page 2 DRAINAGE WELL DATA: WELL DIAMETER = WELL DISCHARGE RATE PER FT OF HEAD = AVAILABLE HEAD = DISCHARGE RATE PER WELL = CUMULATIVE INFLOW/OUTFLOW DATA: STORM FREQUENCY = C FACTOR DRAINAGE AREA = # OF WELLS PROVIDED TOTAL DISCHARGE RATE _ TOTAL DISCHARGE RATE _ SEDIMENT TANK STORAGE = F.D. STORAGE _ SOLID PIPE STORAGE = INFLOW-EXFILTRATION TABLE 24 INCHES 500 GPM 7.00 FT 3,500 GPM 5 YEARS 0.95 1.23 ACRES 1 3,500 GPM 7.80 CFS 720 CF 0 CF 0 CF TIME MIN INTEN. IN/HR CUM.INFLOW CF SYST. STO. CF ADJ. INFL. CF WELL DISCH. CF OVERFLOW CFS 8 6.41 3597 720 2877 3743 -1.81 10 6.17 4328 720 3608 4679 -1.78 15 5.64 5941 720 5221 7019 -2.00 20 5.20 7300 720 6580 9358 -2.32 30 4.50 9466 720 8746 14037 -2.94 40 3.96 11115 720 10395 18717 -3.47 60 3.20 13460 720 12740 28075 -4.26 90 2.48 15663 720 14943 42112 -5.03 120 2.03 17059 720 16339 56150 -5.53 150 1.71 18023 720 17303 70187 -5.88 180 1.48 18798 72() 18008 R4225 -6.13 14 90000 80000 70000 60000 U 50000 w p 40000 30000 20000 10000 0 0 CUMULATIVE INFLOW-EXFILTRATION A / / / / / WELL DISCHARGE / 4e / 7.8CFS / e / CUMULATIVE INFLOW A 20 40 60 80 100 TIME (MIN) 120 140 160 180 200 2 a w P 0 1 QD Since 1989 CIVIL LAND DEVELOPIWENT TRAFFIC AND TRANSPORTATION EXHIBIT "C" MD-WASD Sewer Atlas MD-WASD Water Atlas Proposed Water Use Calculations DERM Pump Station 30-0002 Status Solid Waste Generation Calculations 16 ,f 131 :132 - 557 •. 15 119 =HOP OVER 1 SW f TER 0 1 531 10 PROJECT LOCATION `` 89 [595 91 48 '2 'HOP OWN 120 121 122 • HOP Ovgp 110 13 i 2 /_ \\ f al I'531 1I 2pi` 7 �\_» LLC ; `PA" 2 45 f 531,E i 20 / 16802 (I 537• !1 16 f25S ir E31 �i 20 E i 10 "3--10" th 531 Su) 3-7w- 432 431 43 42 735 430 12141 1 io I" 19 531 f MD-WASD SEWER ATLAS 531 9 s 17 SW3ST 2" (47 1.5" 8345 1 PROJECT LOCATION in ) 2" 2r 6" 4429 7 2' 16 2 � 15Tt —.- ,f 4275 ill 12- 1OP OYU HOP OVER 1 t �. ' 4 764 1 ._ J\ 1 15.11 ( 337 j \ i / 636 \ 1 / 2" 2" 1.5. � 2" —` (7843 2 / 1 , I JJ 642 j T j 7 1 0127)f9-$;;V 7 1 / SW 4 ST \4R �--2. 2 ) (642 1 t41 f 639 t 17 T c 1 � ss fW 004-?OL R,A.97$/OYi, RODFRIGUEZ APARTMENS ti $r (41 �.REVISED96 R.A.1/19/OS s 4a �r ! 2324 16' \2 ` 2 •' c 2924 use ;43 MD-WASD WATER ATLAS 18 MIK ..�� NNWV 1f — 00 fa Since I989 it nig CIVIL LAND DEVELOPMENT TRAFFIC AND TRANSPORTATION PROPOSED WATER USE CALCULATIONS PROJECT PUNTA DIAMANTE (ALTOS POINTE) DATE: 26-Jan-07 TYPE OF BUILDING USE AREA [sf] RATE [gpd/sf] ADF [gpd] PROPOSED FLOWS: RESIDENTIAL APARTMENTS 163 200 32,600 OFFICE 15,500 0.10 1,550 RETAIL 8,500 0.05 425 • SUB -TOTAL 34,575 PREVIOUS FLOWS: Single Family Residence • 1 350 350 Duplex 1 500 500 Retail 1,190 . 0.05 60 Office 12,904 0.10 1,290 SUB -TOTAL 2,200 NET INCREASE: 32,375 8550 W. FLAGLER STREET, SUITE 113, MIAMI, FLORIDA 33144 ?007012512245483*SYLVEW * This is not an official docum It. * Stat Station Station Current Delta Projected Type Owner Number ET (Hrs) ET (Hrs) ET (Hrs) -oposed Number of gallons (gpd): 34575 **************************** Downstream Stations **************************** B21L- 30 0056 3.27 0.29 3.56 A52M+ 30 0001 6.25 0.01 6.26 30 CD 1002.25 0.01 1002.26 20 Sylvester, Wilma (DERM) File Edit View Favorites Tools Help Back Address http:JJ10.7.42.79Jdolfinjmapjmap.htm• Search '*'fie -Favorites Links Customize Links eJ Free Hotmail J Windows RY•. Windows Marketplace Windows Media .• tfdtiWlAS1 ';Sewer; 'roperty: i, .: Right of Ji y: _ w•`Displayupdate scannedtatlas<- d";L—o AB SW 4 ST PRoJ9CI GoG4T/O() :911433.31.0 52221316 Appirox 367.ft. Copyright©1999 Miami Dade Water and Sewer Department. All rights reserved. Send your questions or comments to: illr.amiamidade.gov r Applet Map started --a ;IL • SW 5 ST SWGST S,{T ST SW G ST 1 21