HomeMy WebLinkAboutTab 3 Site Utility StudyDELAWARE PARKWAY CONDOMINIUM
NW 20TH STREET/NW SOUTH RIVER DRIVE
MIAMI, FLORIDA
APRIL 5, 2006
SITE UTILITY STUDY
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PREPARED BY:
FORD ENGINEERS, INC,
1950 NW 94th Avenue, Second Floor
Miami, Florida 33172
Phone: (305) 477-6472
Fax: (305) 477-8054
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PROJECT LOCATION:
The project is located i.n Section 33, Township 53S, Range 41E, within the City of Miami,
Florida. The site is approximately 12.05 Acres in size and is bounded by NW 20`h Street on the
north, Delaware Parkway along the southwest and NW 28th Avenue on the east (See Exhibit
"A"),
2. PROPOSED DEVELOPMENT:
The proposed development will consist of 1550 Condominium units, 40 Townhouse units,
59,852 Square Feet of retail space and 6,000 square feet of restaurant with 300 seats (See Exhibit
"B"
3. LEGAL DESCRIPTION:
Tract "A", of "DADE REAGENTS", according to the plat thereof, recorded in Plat Book 70, at Page 56
of the Public Records of Miami -Dade County, Florida.
TOGETHER WITH:
The West 61.00 feet of Lot 1, as shown on that plat of "TWIN RIVER ISLAND", according to the plat
thereof, recorded in Plat Book 40, at Page 84 of the Public Records of Miami -Dade County, Florida.
TOGETHER WITH:
That portion of Tract "D" and Lot 84, as shown on plat of "DELAWARE PARK - SECTION ONE",
according to the plat thereof, recorded in Plat Book 40, at Page 17 of the Public Records of Miami -Dade
County, Florida, which lies Northeasterly of that part of said "DELAWARE PARK - SECTION ONE",
re -platted as "DADE REAGENTS", recorded in Plat Book 70, at Page 56 of the Public Records of
Miami -Dade County, Florida.
TOGETHER Wl1 H:
That portion of Tracts "D" and "E", of "DELAWARE PARK - SECTION ONE", according to the plat
thereof, recorded in Plat Book 40, at Page 17 of the Public Records of Miami -Dade County, Florida,
which lies Southeasterly of that part of said "DELAWARE PARK - SECTION ONE", re -platted as
"DADE REAGENTS", recorded in Plat Book 70, at Page 56 of the Public Records of Miami -Dade
County, Florida.
TOGETHER WITH:
Tract "F", of "DELAWARE PARK - SECTION ONE", according to the plat thereof, recorded in Plat
Book 40, at Page 17 of the Public Records of Miami -Dade County, Florida. LESS that portion of Tract
"A", of "JOHN SANDERS REVISED PLAT OF A PORTION OF PARADISE PARK SECTION 2",
according to the plat thereof, as recorded in Plat Book 40, at Page 86 of the Public Records of Miami -
Dade County, Florida, that lays within said Tract "F", said portion of said Tract "A" being more
particularly described as follows:
COMMENCE at the Northwest Corner of said Tract "F"; the next two(2) courses and distances being
along the Northeasterly Line of said Tract "F"; 1)thence S39deg30min20secE for a distance of 20.33 feet
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to the POINT OF BEGINNING; 2)thence continue S39deg30min20secE for a distance of 97.96 feet;
thence Northwesterly along a meander line for a distance of 103 feet more or less to the POINT OF
BEGINNING.
Containing 524,991.72 Square Feet and/or 12.05 Acres more or less.
4. DRAINAGE:
Based on the proposed site plan, once the project is fully developed, it is estimated that the
project will be approximately 90% impervious, resulting in a runoff coefficient of 0.9.
The stormwater runoff from the site will be collected in a series of interconnected inlets that will
eventually discharge into a series of 24-inch diameter drainage wells. The runoff from the
pavement will be directed towards the inlets by grading the pavement towards the inlets and the
rain water leaders from the roof drainage can also be piped to the drainage system. The inlets
will each have pollution retardant baffles and the drainage wells will each be preceded by grit
chambers.
The drainage system will be designed as per the City of Miami Public Works Department and
Miami -Dade County Depai talent of Environmental Resources Management (DERM) standards
and specifications. The drainage wells must also be permitted by the State of Florida Department
of Environmental Protection (FDEP).
A conceptual drainage design for the project would be based on the use of the Rational Formula,
using a 5-year storm event with al0-minute time of concentration.
The calculations are as follows.
Q=CIA
Q= Peak runoff in Cubic Feet Per Second (CFS)
1= Rainfall Intensity (inches/hours)
A= Area in acres.
Therefore Q= (0.9)(6.50in/hr)(12.05Acres) — 70.5 CFS or 31,725 GPM..
Without the benefit of anticipated well capacities from a test well, a capacity of 500 GPM/Ft —
Head is used in determining the number of wells required. The existing grades on the roads
abutting the project are at an elevation of 6.5 NGVD +/-. Assuming the inlets on the site will be
approximately 6-inches below the road at 6.ONGVD +/-, there will be approximately 2.5 feet of
head per well. At 500GPM/Ft-Head, each well would have a capacity of approximately 1500
GPM. At this rate, approximately 21 wells will be required. Another rule of thumb used is one
well per acre. This method would result in approximately 12 wells. The actual number of wells
required could vary significantly from those quoted above. Until test results are available, a more
accurate number cannot be calculated at this time.
Another possibility for the disposal of the stoiinwater runoff is the use of French Drains. A series
of South Florida Water Management District (SFWMD) drainage tests will be required on the
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site its order to determine the exfiltration rate. This will subsequently determine the amount of
French :Drains required on the site to properly dispose of the stoririwater runoff.
5. WATER DISTRIBUTION:
Miami Dade Water and Sewer Department (M-DWASD) records show that the site currently is
Fronted by an existing 30-inch water main on Delaware Parkway and N.W. 20th Street, abutting
the entire southwestern and northern boundaries of the project, respectively.
Based on the current proposed use and on Dade County Public Works Department and Miami -
Dade County Fire Department standards, 12-inch water main improvements will most likely be
required within the project and along N.W. 28th Avenue. The point of connection for the new
water mains would be to the existing 30-inch water main on Delaware Parkway and on N.W. 20th
Street. The actual requirements will be determined upon receiving a water and sewer availability
letter and/or services agreement from M-DWASD.
The proposed water and fire services for the building will be connected to the new 12-inch water
mains within the project. Please note that additional fire hydrants (if required) will also be
connected to either the existing water mains abutting the project and/or to the new water main
improvements within the project.
The anticipated water demand based on current M-DWASD standards is as follows;
Condominium: 200 gallons per day (gpd) per apartment
Townhouse residential units: 250 gallons per day (gpd) per unit
Retail Space: 5 gallons per day (gpd) per every 100 square feet (dry use only)
Full service restaurant: 50 gallons per seat per day (gpd/seat)
Therefore, the total water usage demand for this project is as follows:
Condominiums:
1,550 units @ 200 gpd =
310,000 gpd
Townhouse:
40 units @ 250 gpd =
10,000 gpd
Retail Space:
59,852 sq. ft. / 100 X 5 gpd =
2,992 gpd
Full service Restaurant:
6,000 Sq. Ft. (300 seats) @ 50 gpd =
15,000 gpd
TOTAL:
337,992 gpd
6. SANITARY SEWER DISTRIBUTION
Miami -Dade Water and Sewer Department (M-DWASD) records show that the site is currently
fronted by has 10-inch gravity sewer mains along a portion of Delaware Parkway and NW 28th
Avenue and all along N.W. 20th Street. The actual requirements and system capacity will be
determined upon receiving a water and sewer letter of availability from M-DWASD and/or any
other department having jurisdiction over these matters.
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The anticipated sewer demand based on current M.-DWASD standards is the same as specified in
number four (4) hereinabove.
Using current M-DWASD Standards, the peak factor for the project will be 3.5, resulting in a
peak flow of 1,182,972 GPD.
The pump station that would accept the flow from the project is WASD Pump Station NO. 80.
The Pump Station has a capacity of 1,120 GPM and as of April 5, 2006, DERM records show
that the station is pumping 3.61 hours per day which is well below the warning threshold of 8
hours per day imposed by WASD and DERM. The additional flow from the project will
increase the pumping time to approximately 8.53 hours per day, which is slightly over the 8
hours per day warning threshold (See Exhibit "C"). WASD and DERM may require the pump
station to be upgraded.
7. SOLID WASTE GENERATION:
Solid waste generated from this proposed project will be collected in trash durnpster containers
for both refuse and recycling. Regular service will be provided thru a private hauling company
or thru the City of Miami Solid Waste Department.
RESIDENTIAL CONDOMINIUMS:
Rate 1.5 tons per year per condominium unit
2,325 tons per year
1,550 units X 1.5 tons/year =
6.36 tons per day
12,720 lbs per day
RESIDENTIAL TOWNHOUSES:
40 units X 1.5 tons/year =
60 tons per year
0.164 tons per day
328 lbs per day
COMMERCIAL DEVELOPMENT:
Rate 2.5 tons per year per square feet
65,852 square feet X 2.5 tons/year
164,630 tons per year
451 tons per day
902,000 lbs per day
TOTAL WASTE GENERATED =
167,015 tons per year
457.52 tons per day
915,040 lbs per day 1
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EXHIBIT "A"
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EXHIBIT "A"
GRAPHIC SCALE
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PROJECT SUMMARY
TOTAL NUMBER OF UNITS= 1,590
TOTAL NUMBER OF
1 BEDROOM UNITS.
862
TOTAL NUMBER OF
2 BEDROOM UNITS=
688
TOTAL NUMBER OF
TOWN HOUSES- 40
TOTAL OF
RETAIL AREA.= 65,852 SO- FT,
TOTAL NUMBER OF
PARKING SPACES
HEOUIRED= 2,093
TOTAL NUMBER OF�
PARKING SPACES
PROVIDED. 2.200
A-0.0.1
BLDG 1
TOTAL UNITS= 342
TOTAL PARKING REQUIRED- 493
TOTAL PARKING PROVIDED. 536
UNIT MIX:
1 RR= 199 UNITS
2 BR= 137 UNITS
TOWN HOMES= 8 UNITS
G 1A: 12 STORIES
234 UNITS
RETAIL AREA:
24,544-SQ.FT-
BLDG 1B: 12 STORIES
108 UNITS
BLDG 1C: 6 TOWN H
PiASgiv
EXHIBIT "B"
BLDG 2
TOTAL UNITS= 384
TOTAL PARKING REQUIRED= 490
TOTAL PARKING PROVIDED= 518
UNIT MIX:
1 BR= 192 UNITS
2 BR= 178 UNIT $
TOWN HOMES= 14 UNITS
BLDG 2A.13 STORIES
173 UNITS
RETAIL AREA:
8,560 SOFT.
LOG 2B: 1
HASEJ1fl
BLDG 3 ..
TOTAL UNITS= 418
TOTAL PARKING REQUIRED= 532
TOTAL PARKING PROVIDED= 518
UNIT MiX.
1 BR= 210 UNITS
2 BR= 194 UNITS
TOWN HOMES. 14 UNITS
BLDG 3A:14 STORIES
180
PHASE 11
MIAMI RIVER RAPIDS
BLDG 4
TOTAL UNITS=4,
TOTAL. PARKING
TOTAL PARKI
UNIT MIX:
ESLTJG 3B:
1
SE 1
0
7
OVERALL sL E PLAN
scAE
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EXHIBIT "0"
Pump Station 1180
FEINC #04-05I
4/5/2006
Projected Pump Station Flow Calculations for Miami River Rapids
Proposed Average Daily Flow:
Indicated Flows
242,592 GPD
Reserve Flow
2,350 GPD
Miami River Rapids
Apartment Units
1,500 units
200 GPD
300,000 GPD
Townhouse Units
40 units
250 GPD
10,000 GPD
Retail Space
59,852 sq. ft./l00
5 GPD
2,993 GPD
Full Service Restaurant
300 seats
50 GPD
15,000 GPD
TOTAL AVERAGE DAILY kLOW:
Pump Operating Time:
Indicated Flows
Current NAPOT =
Reserve Flows =
Additional NAPOT
Reserve & Indicated Hours
Additional Project Flows =
Additional NAPOT
Total Projected Hours =
$72,935 GPD
242,592 GPD
3.61 hrs
67,200 GPD/hr
2,350 GPD
0.03 hrs
3.64 hrs
327,993 GPD
4.88 hrs
8.53 hrs
Station Net Capacity = 1.612,800gpd
Miami River Rapids 4/5/2006
Page 1 of 3
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EXHIBIT ''C"
Manolo Peral
From: Sylvester, Wilma (DERM) [SylveW@miamidade.gov]
Sent: Wednesday, April 05, 2006 10:36 AM
To: Manolo Peral
Subject: RE: Napot for WASD Pump Station #80
E4A .M•44.fi" Calaf s,<*.iW Wrrii0 atk,
0
station-1111lb
MIAMI DADE WATER & SE
Addr..I791 NW 3D AVE
Sonr.0 ET clock.Y Talm.N *time's. 2
Pump Type.8 Stn Massa Spand.1 Hrspur,I
Puup Station M nthly Information
Atlas Pg..313
DEPARTMENT
Res flaw(gad) Prof flueot % Cap
Plans.. 2,350 3.64 hrs 36.4D
Date Vo.NAP117 itvg 2ailg Regard
Reading
02/08/2996 2.86 2 Y
01/11/2096 2.67 2.87 Y
12/14/2906 3.12 3.12 Y
11/16/2005 3.32 3 32 Y
10/12/2906 4.86 4.85 V
09/14/2_08 4.31 4.31 y
08/10/2005 3.10 3.19 Y
Signature..GRARDAL—D
Olen Revive>
Morateri m..OK
Murata RN) cffective since
Yearly UAPOT (hrs)........,... 3.51
Stn Gran. tapadtg(gpd).. 1,612.800
Statinn Roductipn Factpc„...„„„ 1.00
Stn Hot Cap Curtifgpd).. 0
Stn Rot Capachq(gtd)...„ 1,612,899
Indicated Reasgrid) 242.632
Number
/if pulps
2
2
2
2
2 .
2
2
Sign 9ate..11/ 7/1996 14:36;23.30
Comments
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" 40Attt.,140:01.--
4/5/2006