HomeMy WebLinkAboutSite Utility Study•
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Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
600 BISCAYNE
MULTI USE DEVELOPMENT
SITE UTILITY STUDY
APRIL 2005
8550 W►. FLAGLER STREET, SUITE 113, MIAMI, FLORIDA 33144
TEL: (305) 551-6267 • FAX: (305) 551-4542
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Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
TABLE OF CONTENTS
Page
1. General 3
2. Storm ❑rainage System 5
3. Water Distribution System 7
4. Sewer Collection System 9
5. Solid Waste Generation .. 11
EXHIBITS:
"A" Existing Conditions Plan 13
Proposed Site Plan 14
"B" Storm Drainage Well Calculations 15
"C" MD-WASD Atlas (Sewer) 19
MD_WASD Atlas (Water) 20
Proposed Water Use Calculations 21
DERM Pump Station Monthly Report 22
Solid Waste Generation Calculations 24
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Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
600 BISCAYNE- MULTI USE DEVELOPMENT
SITE UTILITY STUDY
General
A. Project Location and size:
The proposed project consists of a Mufti -use Facility to be constructed at an
approximately 1.44 acre downtown Miami.
The project limits are:
to the west NE 2" d Avenue
to the north NE 7th Street
to the east Biscayne Blvd
to the south NE 6th Street_
The property is separated into two different tracts by the existing easement
for the Florida East Coast Railway.
The property being in Section 6, Township 54 South, Range 42 East, Miami -
Dade County, Florida.
B. Existing Conditions:
The entire site consists of 3 different parcels separated by the Florida
East Coast Railway. In its existing condition one is being used as an office
building (Freedom Tower Building) totaling approximately 91,781 sf of
usable space the other parcels being used as open parking facilities.
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CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
C. The proposed project build -out will be as follows:
Proposed Building:
Condominium Apartments
Restaurant
Existing Building: (Freedom Tower)
685 Units
260 Seats
Museum 12,000 sf
Restaurant 300 Seats
Condo Amenity (Library/Club) 5,800 sf
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Since 1989
2. Storm Drainage System
A. Existing Storm Drainage System:
CIVIL
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 and the Florida Department of
Transportation (FDOT). 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. FDOT will be conducting roadway improvements on Biscayne
Blvd within the next two years and will design a new roadway drainage
system to serve that facility.
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) 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 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.
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C. Required number of Wells:
CIVIL
LAND DLOPMENT
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.
Also, the wells will be designed to contain the entire run-off for the Critical
Storm Event to meet the FDOT requirements since the project is adjacent
to an FDOT facility.
Based on the attached calculations, a total of three (3) — 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"
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3. Water Distribution System
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TFiA►dsPOriTATION
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 6-inch water main on NE 7th Street that runs along the
entire northerly boundary of the property.
• An existing 12-inch and existing 24-inch water main on NE 6tr' Street
that run along the entire southerly boundary of the property.
• An existing 12-inch and two (2) existing 24-inch water mains on
Biscayne Blvd. that run along the entire easterly boundary of the
property.
• An existing 12-inch water main that runs along the entire westerly
boundary of the property.
These existing water mains can be used to provide fire protection domestic and
landscape irrigation service for this project. The existing water distribution
system in the vicinity of this project will have to be evaluated by the MD-WASD
lnfill Committee to determine if additional extensions or contributions are
required. 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) the existing water mains appear to be adequate
to support the proposed development. MD-WASD Infill Committee may
require additional system improvements to upgrade the 6" water main on
NE 7t, Street, or a contribution for future improvements. This will be
determined during final design.
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Since J989
C. Anticipated water use:
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
The water use requirements for this project are calculated based on the
build -out information previously described. An anticipated flow demand of
165,780 GPD is expected from this project. The previous flow demand
from the existing buildings is 9,178 GPD. The net increase in demand
from this project is 157,602 GPD.
For determination of anticipated flows see Exhibit "C".
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4. Sewer Collection System
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
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 15-inch gravity sewer line along NE 7th Street that runs
along the entire northerly boundary of the project.
• An existing 10-inch gravity sewer line along NE 6th 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.
The Sanitary Sewer System in the vicinity of this project will have to be
evaluated by the MD-WASD Infil[ Committee to determine if additional
extensions or contributions are required. That will be done at the time of
permitting.
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CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATK]N
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 4.32 hours per day as of February 2005 according to DERM.
(See Exhibit "C").
The impact of this project on the ET of this station is 0.11 hours. The
expected ET will be 4.42 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.
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5. Solid Waste Generation
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
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 31 CY per
day (See Appendix "D").
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cm'
LAND DEVELOPMENT
TRAFFIC AND TFIANSPORTATION
EXHIBIT "A"
EXISTING CONDITIONS PLAN
PROPOSED SITE PLAN
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EXISTING CONDITIONS PLAN
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PROPOSED SITE PLAN
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CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
EXHIBIT "B"
Storm Drainage Calculations
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PROJECT NAME
DRAINAGE AREA:
Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
600 BISCAYNE 2/712005
ENTIRE SITE Page 1
SITE DATA:
SITE AREA = 1.44 ACRES
BUILDING FOOT PRINT = 400 FT
BUILDING HIGHT = 650 FT
BUILDING WALL AREA = 5.97 ACRES
CONTRIBUTING BUILDING AREA = 1.79 ACRES
CONTRIBUTING AREA = 3.23 ACRES
NUMBER OF WELLS = 3
REQUIRED VOLUME FOR 90 SEC, DETENTION TIME (PER WELL):
CONTRIBUTING AREA PER WELL = 1.08 ACRES
RAINFALL INTENSITY (90 SEC) = 6.4 IN/HR
RUN OFF VOLUME (90 SEC) = 558 CF
DETENTION VOLUME PROVIDED:
TANK LENGTH = 16.00• FT
TANK WIDTH = 7.00 FT
TANK BOTTOM ELEV = -2.50 NGVD
TOP OF WELL CASING ELEV = 2.50 NGVD
STORAGE DEPTH = 5.00 FT
DETENTION VOL PROVIDED = (per well) 560 CF
TOTAL DETENTION VOLUME = 1,680 CF
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PROJECT NAME
DRAINAGE AREA:
Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
600 BISCAYNE 2/7/2005
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 WELL - PROVIDED
TOTAL DISCHARGE RATE =
TOTAL DISCHARGE RATE =
SEDIMENT TANK STORAGE =
F.D. STORAGE =
SOLID PIPE STORAGE _
INFLOW-EXFILTRATION TABLE
24 INCHES
750 GPM
3.50 FT
2,625 GPM
5 YEARS
0,95
3.23 ACRES
3
7,875 GPM
17.55 CFS
1,680 CF
0 CF
0 CF
TIME
MIN
WTEN.
IN/FIR
CUM.INFLOW
CF
SYST. STO.
CF
ADJ. INFL.
CF
WELL DISCH.
CF
OVERFLOW
CFS
8
6.41
9438
1680
7758
8422
-1.38
10
6.17
11359
1680
9679
10528
-1.41
15
5.64
15590
1680
13910
15792
-2.09
20
5.20
19157
1680
17477
21056
-2.98
30
4.50
24842
1680
23162
31584
-4.68
40
3.96
29170
1680
27490
42112
-6.09
60
3.20
35324
1680
33644
63168
-8.20
90
2.48
41105
1680
39425
94753
-10.25
120
2.03
44768
1680
43088
126337
-11.56
150
1.71
47298
1680
45618
157921
-12.48
180
1.48
49149
1680
47469
189505
-13.15
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CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
EXHIBIT "C"
MD-WASD Sewer Atlas
MD-WASD Water Atlas
Proposed Water Use Calculations
DERM Pump Station 30-0002 Status
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PROJECT LOCATION
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MD-WASD SEWER ATLAS
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( 3248 \22 )
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PROJECT LOCATION
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CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
Since 1989
PROPOSED WATER USE CALCULATIONS
PROJECT 600 BISCAYNE
DATE: 19-Apr-05
TYPE OF BUILDING USE
AREA
[sf]
[units]
RATE
[gpd/sf]
[gpd/unit]
ADF
[gpd]
PROPOSED FLOWS:
PROPOSED BUILDING:
Residential Condominiums
685
200
137,000
Restaurants (4,400 se
260
50
13,000
EXISTING BUILDING:
Museum
12,000
010
1,200
Restaurant (7,500 se
300
50
15,000
Condo Amenity (Library/Club)
5,800
0.10
580
SUB -TOTAL
166,780
PREVIOUS FLOWS:
OFFICE
91,781
0.10
9,178
SUB -TOTAL
9,178
NET INCREASE: 157,602
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Pump Station
Station..30 -0002 Atlas Pg..E13
Monthly Information
MIAMI DADE WATER & SEWER DEPARTMENT
Addr..925 BISCAYNE BLVD
Sec -Township ---Range 31-53-42
Genr. ET clock.Y Telrn.Y #Pumps. 5
Pump Type.A Stn Class.M Speed.R Hrspwr.+
Res flow(gpd)
Plans.. 1,779,363
Plats.. 0
Extens. 0
Proj Napot
4.32 hrs
3.08 hrs
3.08 hrs
Cap
43.20
30.80
30.80
Date Mo.NAPOT
12/28/2004
11/23/2004
10/25/2004
09/24/2004
08/25/2004
07/27/2004
06/25/2004
GOLD/M
GOLD/D
911f/T
•
2.80
3.09
3.28
3.14
3.38
2.82
2.79
Avg Daily Flows
11.21
12.34
13.10
12.56
13.50
11.28
11.16
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Signaure..LEALG
Station I<m>provement GOLD/S
<D>ownstream Station
Sewer Cer<t>ification
<Plan Review>
Morator?um..OK
Moratorium effective since
Rgd
Fig
Y
Y_
Y_
Y_
Y_
Y
Y
<S>tation Inform.
/ /
Yearly NAPOT (hrs)
Stn Gross Capacity(gpd)-
Station Reduction Factor
Stn Net Cap Certif(gpd)
Stn Net Capacity(gpd).._,
Indicated Fiows(gpd)
3.08
57,600,000
0.60
0
34,560,000
4,435,200
Comments
Pmp
5
5
5
5
5
5
5
Sign Date. 03/17/2003 13:52:24.01
GOLD/U <U>pstream Station
GOLD/P <P>ump Information
22
e.5020212042808*DEARMM * This is not an official docum
*
M Stat Station Station Current Delta Projected
R Type Owner Number ET (Hrs) ET (Hrs) ET (Hrs)
Proposed Number of gallons (gpd): 151522
**************************-****
OK A5RM-i- 30 0002
AC 30 CD
AC 30 RS
IN 30 RS95APR
IN 30 RS94MAR
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Downstream
Stations *****************************
4.32 0.11 4.42
1001.61 0.03 1001.64
1001.55 0.01 1001.56
1001.34 0.01 1001.35
1001.44 0.01 1001.45
23
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Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
EXHIBIT "D"
Solid Waste Generation Calculations
24
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Since 1989
CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
PROPOSED SOLID WASTE CALCULATIONS
PROJECT 600 BISCAYNE BLVD
DATE: 7-Feb-05
TYPE OF BUILDING USE
AREA/UNITS
Est]
[seats]
RATE
jlb/st]
[Ib/seat]
SOLID WASTE
GENERATED
[IN
SOLID WASTE J
GENERATED
[tons]
PROPOSED BUILDING:
685
5,800
300
12,000
8
5
0.025
5
0.025
5,480
875
145
1,500
300
2.74
0.44
0.07
0.75
0.15
'APARTMENT UNITS t
RESTAURANT (1 ° 5f1
EXISTING BUILDING:
CONDO AMENITY
RESTAURANT
MUSEUM
NET INCREASE:
8,300
4.15
ANTICIPATED SOLID WASTE VOLUME AT 7 CY PER Tt 29 CY / DAY
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CIVIL
LAND DEVELOPMENT
TRAFFIC AND TRANSPORTATION
Since 1989
PROPOSED SOLID WASTE CALCULATIONS
PROJECT 600 BISCAYNE BLVD
DATE: 19-Apr-05
TYPE OF BUILDING USE
AREA/UNITS
[sf]
[seats]
RATE
[Ib/sf]
[Ib/seat]
SOLID WASTE
GENERATED
[lb]
SOLID WASTE
GENERATED
[tans]
PROPOSED BUILDING:
685
260
5,b0D
300
12,000
8
5
0.025
5
0,025
5,480
1,300
145
1,500
300
2.74
0.65
0.07
0,75
0.15
APARTMENT UNITS
RESTAURANT
EXISTING BUILDING:
CONDO AMENITY
RESTAURANT
MUSEUM
NET INCREASE:
8,725
4.36
ANTICIPATED SOLID WASTE VOLUME AT 7 CY PER Tt 31 CY / DAY
25