HomeMy WebLinkAbout2022-149CCNA2018 WORK ORDER 7
Conceptual design of a Stormwater Pond
This Work Order Number 7 is entered into as of this 16 day of August , 2022, pursuant to
that certain Continuing Consulting Engineering Services Agreement for Professional Services entered
into as of this 17th day of April, 2018 for a three-year term, and renewed on May 18, 2021 for an
additional two-year term (collectively referred to as the "Agreement"), by and between INDIAN RIVER
COUNTY, a political subdivision of the State of Florida ("COUNTY") and Atkins, North America, Inc.
("Consultant").
The COUNTY has selected the Consultant to perform the professional services set forth on
Exhibit A (Scope of Work), attached to this Work Order and made part hereof by this reference. The
professional services will be performed by the Consultant for the fee schedule set forth in Exhibit A
(Fee Schedule), attached to this Work Order and made a part hereof by this reference all in accordance
with the terms and provisions set forth in the Agreement. Pursuant to paragraph 1.4 of the Agreement,
nothing contained in any Work Order shall conflict with the terms of the Agreement and the terms of
the Agreement shall be deemed to be incorporated in each individual Work Order as if fully set forth
herein.
IN WITNESS WHEREOF, the parties hereto have executed this Work Order as of the date first
written above.
CONSULTANT:
Atkins North A Terica, Inc.
By:
Print Name: Ma Taylor
Title: Vice President
•"coni �irss�•
BOARD OF COUNTY COMMISSIONER3'` ••.F�s,*
OF INDIAN RIVER COUNTY
f i •`r
l i �-/� ,�1 �: vim; ��'�t,.:.,�� •'c`�,:
Peter D. O'Bryan, Chairman(
BCC Approved Date: August 16, 2022
Attest: Jeffrey R. Smith, Clerk of Court and Comptroller
By:
Deputy Clerk
Approved: �a=
Jason . Brown, County Administrator
Approved as to form and legal sufficiency:
Dylan T. Reingold, County Attorney
Exhibit A
Indian River County 8t" Street Parcel
Scope of Work
August 3, 2022
Background
ATKIN5
Canals within the region are regulated by the Indian River Farms Water Control District
(IRFWCD). The canal system of the IRFWCD was constructed to drain standing water and
"reclaim" what was considered wastelands of Florida. The original constructors considered
the canal installations a benefit to commerce and the environmental impact was not
considered at that time. Impacts to the Indian River Lagoon (IRL) were primarily from
agricultural practices until about 1950 when urbanization increased dramatically, as did the
impact of urban development on the IRL.
In the mid -1990's, it was determined that the IRFWCD canal system receives and transports
nutrients, suspended solids, light -attenuating materials, and excessive freshwater flows that
have reduced seagrass coverage and impacted the IRL ecosystem. Based on work by
SJRWMD, the recent focus of water quality improvement in the IRL has been directed
towards the reduction of "optical parameters" that restrict the light into the water column.
Optical parameters of importance include suspended solids, turbidity, and color. Nutrients
are considered to be secondary optical parameters because high nutrient levels lead to algal
production which causes an increase in turbidity.
Scope of Services
Indian River County (County) is seeking to improve water quality discharges into the IRL by
converting a 40 -acre historical agricultural parcel into a stormwater storage facility. The 8th
Street Parcel is located at the southeast corner of 8th Street and 74th Avenue, west of the
City of Vero Beach approximately 2,000 feet north of the Egret Marsh Stormwater Treatment
Facility along the Lateral C Canal.
The County maintains a current stormwater management plan and administers a robust
water quality monitoring program throughout the County limits. Specific to this project, the
County collects water quality samples in the Lateral C Canal adjacent to the 8th Street
parcel. Current water quality sampling results show relatively low values of TN and TP in the
canal. This may be due to the water quality improvements generated by the upstream Egret
Marsh Stormwater Treatment Facility, which treats a portion of the Lateral C canal flows, or
from reduced rainfall and runoff during the limited sampling period, or a combination of both.
The design approach will be to extract water from the Lateral C Canal for storage in a
proposed pond that will reduce nutrients through natural uptake or potentially filter media.
The pond may also be used to decrease pulsed discharges of stormwater into the lagoon
during periods of heavy rainfall through active management of water levels in the pond.
Extraction of water from the Lateral C will be accomplished using a pump station.
I RC_8th_StreetParcel_Scope_ATKI NS.docx
ATKINS
The project will be divided into two phases. Phase 1 will include data collection, preliminary
analysis, and result in a conceptual design of the project. If feasible and acceptable to the
County, Phase 2 will include the final design and permitting.
A. PHASE 1 Proposed Scope of Work
Task 1: Data Collection and Memorandum
Field and Desktop Review
ATKINS will perform a field and desktop site review to observe and document existing
conditions at the 8th Street Parcel project location. This task will also include review of available
existing GIS data, permits, stormwater models, Indian River Farms Water Control District
(IRFWCD) documents, and stormwater management master plans within the project vicinity.
Water Quality Sampling
The County will provide ATKINS with water quality sampling data performed by the County
and any IRFWCD data relevant to the project location. County will perform water quality
sampling within the Lateral C Canal at the location of the 8th Street Parcel. Geotech will
perform groundwater sampling from locations within the parcel (to determine background
nutrients in the soil or groundwater). Nutrient sampling will be focused on traditional BMAP
parameters, TN and TP.
Historic Wetland and Habitat
ATKINS will utilize historic photos to investigate historic wetland and habitat functions the
project site and surrounding parcels exhibited prior to modern agricultural practices. This
information will be included in a Technical Memorandum with the results from task 3.
Digital Elevation Map (Terrain Topography)
For Phase 1, ATKINS shall utilize recently published Digital Elevation Maps (DEM) derived
from USGS LiDAR data collected circa 2018. Water elevations will be obtained from
information provided by the IRFWMD. Should this information not be available, ATKINS will
discuss what reasonable assumptions may be made, or provide an estimate for supplemental
ground survey to the County.
ATKINS will provide a summary of the data collection task in a Data Collection Technical
Memorandum.
Task 2: Geotechnical Services
A geotechnical investigation will be conducted and include a report documenting soil
qualities, characteristics, suitability for construction/foundations, and location of the
encountered and seasonal high-water table. Groundwater water quality samples will also be
obtained to determine background nutrients. Additional information provided in the attached
geotechnical scope of services.
I RC_8th_StreetParcel_Scope_ATKI N S. docx
ATKINS
Task 3: Ecological Services
ATKINS scientists will conduct a site assessment within the approx. 40 -acre project area to
identify the presence or absence of wetlands and surface waters, and listed wildlife and their
habitat. Wetlands and surface waters will not be formally delineated; however, the
approximate limits of the wetlands and surface water areas will be confirmed during the
onsite review. Formal delineation of wetlands will take place during Phase 2.
Information from the data collection phase (task 1) and the field visit will be used to complete
an Environmental Resources Summary Technical Memorandum. This report will summarize
the natural resources found within the parcel and provide information on the historic function
of the site. A location map depicting the environmental resources including their approximate
limits and relevant photographs will be included.
Task 4: Survey
For Phase 1, ATKINS shall utilize recently published Digital Elevation Maps (DEM) derived
from USGS LiDAR data collected circa 2018. See Task 1.
Additional ground survey will be conducted in Phase 2, following discussions with the County.
Task 5: Preliminary H&H and Water Quality Modeling
As part of Phase 1, ATKINS will perform preliminary modeling of the proposed project. ATKINS
will create a simple model to represent the improvements. The resulting stormwater model will
be used for the conceptual design, and supply needed information for a pre -application
meeting with the SJRWMD, following preparation of the 30% plans.
This task also includes preliminary water quality analysis to determine the overall water quality
improvements (TN and TP) from the proposed facility using BMP Trains or similar
methodology.
As part of Phase 2, final modeling will be conducted to provide necessary documentation to
support a SJRWMD ERP permit submittal.
Task 6: Drainage Design
This task includes a conceptual (30%) design of the proposed stormwater storage and water
quality facility, inflow and outfall, pump station flows for extracting water from Lateral C
Canal, pond storage volume, and rough operation schedule using flashboards or manually
operable weir.
Task 7: Drainage Design Documentation Report
Report documenting the hydrologic and hydraulic analysis of the project which includes
supporting stormwater model and supplemental calculations.
I RC_8th_StreetParcel_Scope_ATKI N S. docx
ATKINS
The report shall include, but not be limited to, the following report section topics:
• Executive Summary
• Project Goal
• Permitting Approach
• Data Collection
• Design Criteria
• Stormwater Model Development
• Model Results
• Conclusions
• Meeting Minutes
• Supporting documents
Task 8: Construction Plans
Phase 1 of the project will include a 30% set of plans. Only select sheets below will be
included in the set to convey the concept. The following sheets are anticipated to be included
at a preliminary level:
1. Key Sheet, General Notes, Summaries of Quantities and Pay Items — Cover
page detailing project locations, EOR, County PM, governing standards, specs,
and index. General and pay item notes, summaries of pay items and quantities.
2. Drainage Map — Plan view showing drainage basins, flow arrows showing
drainage patterns, and proposed drainage structure labels.
3. Plan Sheet - Location and descriptions of existing conditions and proposed
improvements in plan view. Includes typical section of the pond and conceptual
locations for the pump station and outfall structure.
4. Drainage Details — Detail of pond outfall structure
Task 9: Cost Estimate
ATKINS shall prepare a preliminary estimate of construction cost.
Task 10: Pre -Application Meetings with SJRWMD, FDEP, and IRFWCD
ATKINS shall schedule and attend separate pre -application meetings with the SJRWMD,
FDEP and IRFWCD to present the project and receive feedback as to the permits required,
and feasibility of obtaining water quality credits that can be banked and used by the County
in other areas of the watershed. ATKINS will coordinate with County staff on dates and times
of the meeting if their attendance is desired. Includes time for meeting preparation and
meeting minute completion.
IRC_8th_StreetParcel_Scope_ATKI NS.docx
ATKINS
Task 11: Meetings
ATKINS shall attend meetings to monitor progress and gather input concerning project
issues and design solutions. Five (5) progress meetings are included and shall be attended
by the Project Manager and lead designer. The meetings will be held virtually.
Task 12: Project Management
This task includes project oversight and general administration.
Task 13: Quality Control
This task includes quality control and assurance review of the project deliverables. All
documents will be reviewed and accepted by the project quality manager before submittal.
B. PHASE 1 Submittals/Deliverables
All submittals shall be made via PDF.
1. Task 1: Data Collection Technical Memorandum
2. Task 7: Drainage Design Documentation Report
3. Task 8: 30% Construction Plans and Cost Estimate
4. Task 9: 30% Cost Estimate
5. Meeting minutes
C. PHASE 1 Schedule
Work under this task order is expected to commence at NTP and is expected to be completed
within approximately 4-6 months. A detailed schedule will be developed following NTP.
D. Fees
The estimated staff hours and fees required to perform the services described above are
included as Exhibit B. Fees shall be based on a lump sum basis except for those items
specifically indicated as not -to -exceed.
E. Other
County Requirements
The County will Provide:
• Access to the property
• Any legal descriptions, boundary survey, or land survey associated with the property
that the County has already completed
IRC_8th_StreetParcel_Scope_ATKINS.docx 5
ATKINS
• Water quality data
• Utility information
Exclusions and Limitations
Any services not specifically outlined in this scope are excluded.
Survey is not included.
Permitting is not included.
IRC_8th_StreetParcel_Scope_ATKI N S.docx
d
s
Q%
3 LL V
U
LEcua
E
C
20
1
m00
r
s
x
W
Z
Y
C
J
d' F
O
m
!T
Vppf
0 0
O
0
O
O
O
M M
M
O
0
O n
0O ip�
O O
O O
O
O
Lq
h
�
IA
pOp p
O� Cp
O
ti
ti OMD
S GO
O N
N
H1
Q
ih
M
N
M
tl!
W
.O -i
M
M N
M
rl
ift
H
O
S
S
SO
S
S
O
p
s mo
N
p Oo
S
O p O
S
O
p
N
O
N
a
O
N
P
N O+
tT
n
IA
O Vl
Vl
h
O
O
Q m
+M
O
Mi/FM
WMM
W M
M
N
Vl
O
o O O
O
y
o O
o O O
O
m
m
N
y
O
m
7 0
O
N V)
O
V)
O b
10
O
L
N
^
Q
N
N
w
O
a Q
O
O
O O
O
O
O O
O
O O
O O
O
O
o
O
Z
no
c
y
o
o
OW
0
OW
00
oW ON
0
OW
0
0 0
0
0000
OM
o
C
M
oupi
M
M
OW O
O
p
_ y
W U
Q
w
�
F
V =
OU
$ Z
z yi
o
Y
V
O
q o
m
o
T
S
0
o
o
o
O
u
m
m
o
a Q
c
c
C
v BJ
o
O
I
0 0
0
o
O O
o
0 0
0
y l
p w
R
0 0
+�.
0
w
O
ur
00
an
0
o pop
00 6
60
m
w�
w
u a
w
o
ur
us
w
ar
M
u
LL
E
ut
ift
gD
w
W
=
o
Z
W
_
p o
0
0
00
o ti
o 0
0
o a
1-1-1-1
F
o
SS
S
c4
o
o
S S
oo p
o
O
0
0
S
SSS
S
W .moi
D
U O
N
pW
N
pW
Ng
O
OO
WOW
oo
QI
m •E
.N
�
+n
w anw
w
,N.i
UI
W o .
=
d
z of
�_
CL
o
a Q
o
0
0 0
0
0
0 0
0
0 0
0 0
0
p
o
o
O
0 0
0
C
O
OI
�
V
W
aA
yf
f
�
v
� =
y
z y,
0 0
0
C
ffi
U
K
S
a a
S
Spas
$
SSS
S�GGQ
SSS
C N
O
m
INA
S
W S
S
^
S yoNj
VON1
01
G
_i
V
M1
wm
m
M
Mw
f
6
W
N
w
w
N
v
�
o
�
a` =
z v
y a
q
i Z
m
o
mem
v
�vv
'Fill
o
o
C
N
U
�
�❑
N
V
cm
G
Z
O
E al
a+
E
O
3
Iw
v
z
LD
e
e
o
c
w
E
v
o
£ E
z
5
f
E
yo
a
z
> a
t
iD
c
o ui
a
E
�
Q$
v G
aL
3
o
p,01.
M
£ u
c
u
N
D
q
�
zo
�
C
a
O
p~
L w
S N
U
dE
O� L
a+
U W
C
O
a
qq
?
c
cE
za
o
y
0
o
E
v',
O L
I?
G
O
?
m
q9.
c
c
bci ao
c N
c
3
c w
p
o
3Vol
Yin
•-
..
DC'�J
aGC
UY mCaG
vi/1E
a`
J
z
N N
M p
N m
.-1
N M
Nm
r
m
m m
m
Ardaman & Associates, Inc. EXHIBIT C
Geotechnical, Environmental and
Materials Consultants
April 5, 2022
Proposal File No. 2223-067
Revised June 10, 2022
Atkins
482 S. Keller Road
Orlando, Florida 32810
Attention: Mr. Chris Thompson, PE
Subject: Proposal for Subsurface Soil Exploration and
Groundwater Sampling and Testing
Proposed Stormwater Detention Pond
8th Street
Vero Beach, Florida
Dear Mr. Thompson:
As requested, we are pleased to present this proposal for conducting a subsurface soil exploration
and groundwater sampling and testing for the subject project. Based on our review of information
provided by Mr. Thompson, the proposed construction consists of a stormwater detention pond
that will encompass most of the site. Additionally, a pump station slab on grade will be constructed
adjacent to the pond.
Grading plans are not complete at this time; therefore, we have assumed that approximately 1 to
2 feet of fill is required to raise the pump station slab area to final elevation. Typical loading
conditions for the slab on grade are assumed to be less than 150 pounds per square foot.
The scope of our work will include determining if the soil characteristics are suitable to construct
the proposed pump station slab. Additionally, we will explore the subsurface conditions and
perform requested groundwater sampling and testing within the proposed pond area. The
following summarizes our proposed scope of work and associated fees for conducting the subject
exploration.
FIELD EXPLORATION
Since the site is heavily wooded, minor brush mowing may be performed to provide access to the
boring locations. We could direct a site work contractor to mow minimal paths to our boring
locations. Assistance from the client will be needed to help identify wetland areas and areas of
threatened and/or endangered species habitat which should be avoided when performing these
minor brush mowing operations. Also, this proposal assumes that permission from local Code
Enforcement, SJRWMD or other pertinent agencies for the minor mowing, if necessary, has been
obtained by the client. One day of brush mowing is included in this proposal.
1300 N. Cocoa Boulevard, Cocoa, FL 32922 Phone (321) 632-2503 FAX (321) 636-4657
Louisiana: Baton Rouge, Monroe, New Orleans, Shreveport
Florida: Bartow, Cocoa, Fort Myers, Miami, Orlando, Port St. Lucie, Sarasota, Tallahassee, Tampa, West Palm Beach
81h Street Pond
Proposal File No. 2223-067
The proposed field exploration program will include the following:
Description
Number of
Depth Below Ground
Borings
Surface (feet)
Pump Station Slab
1 SPT
15
Stormwater Pond
6 Auger
15
-2-
The SPT boring will be drilled using truck -mounted drilling equipment and a procedure similar to
the Standard Penetration Test outlined in ASTM D-1586. The boring will be sampled at 18 -inch
intervals to 10 feet deep and at 5 -foot intervals below 10 feet. The auger borings will be drilled
with a 4 -inch diameter, truck -mounted continuous flight auger. Each sample will be removed from
the auger or sampler in the field and then examined and visually classified by our crew chief.
Representative portions will be sealed and packaged for transportation to our laboratory for further
analysis as required. Water level observations will be made in the boreholes during the drilling
operation. Upon completion of drilling, the boreholes will be backfilled with soil cuttings.
As requested, our field program will also include installing three temporary, 2 -inch diameter PVC
groundwater sampling wells at semi -random, accessible locations within the proposed pond area.
At least three well volumes of groundwater will be purged from each well and then groundwater
samples will be collected for analysis of total nitrogen and total phosphorus. Upon completion of
the groundwater sampling, the temporary wells will be removed from the ground and the
boreholes will be backfilled with soil cuttings.
LABORATORY PROGRAM
Routine laboratory visual classification will be performed by a geotechnical engineer along with
specific classification tests deemed necessary (i.e., percent fines, organic content).
ENGINEERING ANALYSIS AND REPORT
Engineering analysis of all data obtained will be made to evaluate general subsurface conditions
and to develop engineering recommendations to guide site preparation in the proposed pump
station slab on grade area. For our analysis, we will require specific loading conditions for the slab
on grade. We will also provide a discussion of the subsurface conditions encountered within the
proposed pond area and the results of the groundwater sampling and testing. Our
recommendations for the pump station slab area, together with data developed during the
exploration, will be submitted in a written report upon conclusion of the study.
COST ESTIMATE
The costs associated with the aforementioned tasks are as follows:
Brush Mowing — 1 day (lump sum): $2,820.00
Subsurface Soil Exploration (lump sum) $5,900.00
Total Estimated Cost: $8,720.00
The total estimated cost presented above will not be exceeded without prior authorization from
8t' Street Pond
Proposal File No. 2223-067
the client.
CLOSURE
-3-
This proposal is subject to the following conditions: (1) access to boring locations is to be readily
available to our truck -mounted drilling equipment, (2) the brush mowing can be completed in one
day, (3) the proposed number of borings and the boring depths will be adequate, (4) undisturbed
samples and consolidation tests on fine grained soils are not budgeted into the total cost, (5)
Ardaman & Associates will not take responsibility for damages to underground structures and/or
services that are not located by Sunshine One -Call; their locations are to be provided by the client
or owner prior to commencement of the field work, and (6) exploration or evaluation of the
environmental (ecological or hazardous/toxic material related) condition of the will site and
subsurface is not included.
We appreciate the opportunity to submit this proposal and look forward to working with you on
this project. If this proposal meets with your approval, please indicate your acceptance by issuing
a written work order. Please call if you have any questions or require additional information.
Very truly yours,
ARDAMAN & ASSOCIATES, INC.
Jason P. Manning, P.E.
Branch Manager
41st St '.
NOT 70 SCALE
sa
ee� meg,q Js
Le.
11th S t Vero Beach
Main Relief Canal
Lateral C Canal ath 5 s
PrOjeCt Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan,
Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand),
NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Vicinity Map
ATKI N S
Member of the SNC-Lavatin Group
Document Name: 8thStreetParcelExhibit
Conceptual Layout
Indian River County - Natural Resources
8th Street Parcel Stormwater Facility
Project Exhibit