HomeMy WebLinkAboutRESPONSE - RFP - 8073 ENGINEERING SERVICES FOR WATER, WASTEWATER & STORMWATER FACILITIES CAPITAL IMPROVEMENTS PROJECTS (2)March 9, 2015
Engineering Services for
Future Water, Wastewater,
and Stormwater Facilities
Capital Improvements
City of Fort Collins
Proposal
No. 8073
3665 JFK Parkway, Building 2, Suite 100 ● Fort Collins, CO 80525-3152
970.223.5556 ● www.AyresAssociates.com
March 9, 2015
Linsey Chalfant, PE
Special Projects Manager
City of Fort Collins
700 Wood Street
Fort Collins, CO 80522
Re: RFP 8073 Engineering Services for Future Water, Wastewater and Stormwater Facilities Capital
Improvements
Dear Linsey:
Ayres Associates is pleased to present our team and project approach to the City’s Request for
Proposal 8073. Our team includes Ayres Associates as the prime consultant, supported by Brierley
Associates for geotechnical engineering, Alpine Ecological for environmental restoration, and a choice
of Washburn Surveyors or King Surveyors for topographic and boundary surveying needs.
Our team is uniquely suited for this Capital Improvement Project contract in the following ways:
• We have extensive experience with the City’s Alternative Product Delivery System (APDS)
dating back 15 years to the Locust Street project in 2000. We have been working with the City
using APDS continuously since that time.
• We have experience with the City’s infrastructure, including stormwater, wastewater, and water
systems, ranging from master planning and data collection to design and construction.
• Our depth of technical expertise is vast, including authoring local- and national-level water
resources design manuals and cutting edge research on new technologies for scour and
erosion control.
• We stand behind our work. While we give the City our best effort on every project, when
challenges arise, we take ownership of the problem and work with the City and the APDS
partners to find an effective solution.
We would appreciate your consideration for this upcoming Capital Improvements contract and look
forward to continuing our APDS work with the City.
Sincerely,
Ayres Associates Inc
Christopher G. Pletcher, PE
Manager – Municipal Engineering
Enclosure
cc: City of Fort Collins Purchasing, via e-mail
2
Executive Summary
Ayres Associates values the work we have done and
the work we are currently completing with the City of
Fort Collins, in particular the work completed using
the APDS system. We have more than 15 years of
experience working under APDS and with our project
partners, and we prefer it to any other contracting
or project partnership vehicle that we have worked
under. To relate APDS to triple bottom line concepts,
APDS allows our staff to provide their best effort and
technical expertise in a professional and collegial
project partnership environment (socially satisfying
and sustainable work), while making a positive
impact on the City’s utility infrastructure (enhancing
the natural environment) and at the same time
providing a fair exchange of effort for compensation
on behalf of Ayres Associates (economic impact).
From our perspective, work under the City’s APDS
system is an excellent triple bottom line way to do
business.
Included in this proposal are overall business and
project approaches to the work that we do, along
with specific approaches and proposed scopes
of work and fee estimates for the two projects
presented in the request for proposals – the Howes
Street Waterline and the Mulberry Riverside Storm
Sewer. Between experience and knowledge of
the design elements and construction techniques
required for these projects and our history of working
with the City on APDS project, we believe that Ayres
Associates should be strongly considered as one
of the City’s selected APDS design consultants. We
look forward to working with the City on these and
other projects.
Water, Wastewater, and Stormwater Facilities Capital Improvements
City of Fort Collins
3
Consultant Information and Firm Capability
Contact Information
Chris Pletcher, PE
Manager – Municipal Engineering
3665 JFK Parkway, Bldg. 2, Suite 100
Fort Collins, CO 80525-3152
970.223.5556
PletcherC@AyresAssociates.com
Company Background
Established in 1959, Ayres Associates is a full-
service engineering company providing consulting
services in a variety of disciplines, including
transportation, traffic, and utility engineering;
hydrologic, hydraulic, and geomorphic studies;
watershed and water quality modeling; river
engineering; stream channel stabilization; hydraulic
structures; and dam design. Our firm has 13 offices
in five states and a staff of approximately 280.
Our corporate headquarters is in Eau Claire,
Wisconsin. We also have offices in Fort Collins and
Denver, Colorado; Cheyenne, Wyoming; Madison,
Waukesha, River Falls, and Green Bay, Wisconsin;
Jacksonville, Sarasota, and Tampa, Florida; and
Phoenix, Arizona.
Ayres Associates is an employee-owned firm,
with approximately one-sixth of the corporation’s
employees as individual stockholder investors.
Other employees that meet eligibility requirements
are beneficial owners of the business through the
Employee Stock Ownership Plan.
A seven-member Board of Directors oversees
company operations and sets broad policies. Day-to-
day corporate management is delegated to the firm’s
executive committee, vice presidents, and managers
of operations. Executive committee members
are President Thomas Pulse, PE; Executive
Vice President/Chief Financial Officer Richard
Schoenthaler, CPA; and Executive Vice President
Jan Zander, PE.
Technical operations are based on the project
management system. An operations vice president
or manager assigns a project manager to each
project and tracks the progress of that project. The
project manager serves as the primary contact
with the client, attends meetings, develops project
budgets, coordinates work tasks with the project
team, and guides the project to completion.
Organizational Chart
An organizational chart of proposed staff to be
involved with the City of Fort Collins is included on
Page 7 of this proposal.
Firm Qualifications
Along the Front Range, Ayres Associates has
extensive experience with hydrologic and hydraulic
modeling, geomorphic studies, design, and
construction management of large and small capital
improvement projects for a variety of clients. Our
project team consists of experienced engineers,
geologists, and surveyors, complemented by
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
4
We have also added additional surveyors (Washburn
Land Surveying, King Surveyors, Intermill Land
Surveyors, and William H. Smith & Associates)
to our list of partners and subconsultants so that
we can provide the right capability, capacity, and
personality for each project need. As of the end
of 2014, Ayres Associates no longer maintains a
survey department – we have found that it is more
cost-effective to rely on local established survey
firms than to maintain and provide those services
in-house.
Subconsultants
Ayres Associates has included subconsultants
on our team to assist the City of Fort Collins with
geotechnical, ecological, and surveying needs.
Brierley Associates (Geotechnical)
Brierley Associates is a
privately held national tunnel,
trenchless, geotechnical,
and geo-structural design
firm with offices strategically
located in nine states. Brierley’s headquarters are
in Denver, with a satellite office in Fort Collins.
Brierley has a long history of delivering recognizable
value to our clients and projects by providing cost-
effective and constructible solutions. The firm
understands that planning, design, and construction
of utility projects is a complex mixture of client
needs, contractual preferences, risk allocation, third
party requirements, design criteria, and subsurface
conditions. Brierley’s staff of over 60 design
professionals strive to provide accurate and highly
focused information in a timely and cost-effective
manner.
Brierley’s Colorado geotechnical, tunnel, trenchless,
and geo-structural design practice in Colorado is
heavily focused on water/wastewater infrastructure
projects. Brierley Colorado staff have been involved
in well over 100 water and wastewater plant and
pipeline projects along with many stormwater
projects in Colorado and neighboring states.
AlpineEco (Ecological)
AlpineEco is a sole-
proprietorship consulting
firm that specializes in
wetland, wildlife, and
botanical studies. It
was created in February 2007 when Andy Herb
left his position as Ecology Team Leader at a
large international consulting firm to open his own
company. Andy has worked as an ecologist for over
13 years and has successfully completed projects in
most western states, as well as internationally. He
has managed ecological tasks for both research-
oriented and infrastructure-related projects for nearly
all types of clients in the private and public sectors.
AlpineEco has established relationships with an
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
5
Similar Projects/References
The following are similar projects completed by
key members of our project team over the past five
years. We welcome you to contact our references for
a firsthand account of our work.
North College Corridor Improvements, Fort
Collins, CO
Project involved engineering services for the North
College Avenue Improvements Project, which
consisted of widening road; adding curb, gutter,
and sidewalk; and improving storm drainage along
the project corridor. Storm sewer consisted of the
reinforced concrete pipe ranging in size from 18- to
48-inch that collected off-site flows that drained
to North College in combination with street runoff.
Storm sewer discharged into a water quality pond
before outletting into the Poudre River. Project
constraints included designing a siphon for the Lake
Canal to convey 165 cubic feet per second of ditch
flow under the new storm sewer.
Owner’s name: Stolfus & Associates
Beginning price: $37,860
Ending price: $37,860
Subconsultants: Ayres was a subconsultant to
Stolfus.
Change orders: None
Reference:
Elizabeth Stolfus, Principal
5690 DTC Boulevard, Suite 101W
Greenwood Village, CO 80111
303.221.2330
elizabeth@stolfusandassociates.com
Crow Creek North Interceptor Sewer
Rehabilitation, Cheyenne, WY
Project involves design and construction services
for rehabilitation of 7,000 feet of 30-inch to 36-
inch concrete pipe sanitary sewer that has been
offline for several years. Project challenges include
groundwater infiltration, new flow diversion structure,
300 feet of new pipe, and trenchless installation
of liner into existing pipe. Design effort includes
reviewing closed circuit TV footage, confined
space entry visual inspection, survey, potholing,
groundwater review and modeling, new manholes,
and coordination with private property owners.
Owner’s name: Cheyenne Board of Public Utilities
Beginning price: $159,955
Ending price: Project underway
Subconsultants: Steil Surveying, Terracon
Change orders: None
Reference:
Frank Strong, O&M Manager
Cheyenne BOPU
2416 Snyder Avenue
Cheyenne, WY 82001
307.637.6417
FStrong@cheyennebopu.org
6
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
Reference:
Christopher Carlson, PE, Civil Engineer
City of Loveland
2525 West 1st Street
Loveland, CO 80537
970.962.2774
Chris.Carlson@CityofLoveland.org
East Pershing Corridor Design and
Construction, Cheyenne, WY
Project involved providing roadway and utility design
and construction engineering for reconstruction
of East Pershing Boulevard from Dunn Avenue to
Converse Avenue, including reconstruction of East
Pershing/Converse Avenue/19th Street intersection
as five-leg, multi-lane roundabout.
Project included reconstruction of portions of
Pershing Boulevard, replacement of water mains
and associated valves and hydrants, replacement
of six sanitary sewer manholes and 490 linear feet
of sanitary sewer, installation of two new manholes,
and relining 485 feet of sanitary sewer.
Owner’s name: City of Cheyenne, Board of Public
Utilities
Beginning price: $41,265
Ending price: $41,265
Subconsultants: N/A
Change orders: None
Reference:
Brad Brooks, Director of Engineering
Cheyenne BOPU
2416 Snyder Avenue
Cheyenne, WY 82001
307.637.6416
BBrooks@CheyenneBOPU.org
College Avenue Water Line Replacement,
Fort Collins, Colorado (Brierley)
Brierley Associates provided geologic, geotechnical,
and trenchless design services to the City of Fort
Collins to replace an existing 4,800-foot-long, 4-inch
diameter cast-iron water line under College Avenue/
Highway 287. The replacement was completed
using both horizontal directional drilling (HDD)
and pipe bursting techniques. Brierley directed
the geotechnical investigation and provided
recommendations and design criteria for both HDD
and pipe bursting portions of the projects along with
recommendations for connection pit excavation,
backfill, and repaving of the disturbed portions of
the roadway. Trenchless installation was selected
for the project to minimize disruption to the traveling
public on the highway and businesses along the
alignment. The project was completed on schedule
and within budget and no differing site conditions
were encountered.
Owner’s name: City of Fort Collins
Beginning price: N/A
Ending price: N/A
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
7
Organizational Chart
This organizational chart shows how our project team is structured and fits in with the City of Fort Collins’
Alternate Product Delivery System (APDS). While all of our company staff are available to the City whenever
project needs warrant, APDS projects under this contract will be directed by Key Staff – Chris Pletcher, Andrea
Faucett, Jaclyn Michaelsen, and Sam Lowe. Ayres Associates is a project manager centered company, and
through these project managers, our corporate and subconsultant resources are coordinated to provide a smooth
and effective project team. Senior, experienced staff resources within our local offices are shown in the org chart
below. (Not all staff are shown.)
Ayres Associates
Water/Wastewater/
Stormwater
Chris Pletcher, PE
Andrea Faucett, PE, CFM
Jaclyn Michaelsen, PE, CFM
Sam Lowe, PE
Subconsultants
Geotechnical Engineering
Brierley Associates
Robin Dornfest
Survey
Washburn Land Surveyors
Chad Washburn
King Surveyors
Larry Pepek
Environmental
AlpineEco
Andy Herb
Owner
City of Fort Collins
APDS
Contractor
Ayres Associates
8
Scope of Proposal
Overall Approach to Projects
Ayres Associates is a project-focused company –
nearly everything we do is managed as a project,
from traditional design projects to company assets
such as vehicles. During the proposal and scope
development portion of a project, we identify and
confirm with the City who will be our project manager
and any other key staff that need to be involved.
We also identify junior staff to support the project
manager. It is our goal to provide at least two senior
people on each project who know enough about
the project to field phone calls and questions from
the City or the contractor in the event that one of
the assigned people is not available. This provides
continuity and flexibility for both the City and Ayres
by increasing our ability to have a knowledgeable
staff person available.
At the start of a project, we prepare detailed
documents defining the scope of work, schedule,
effort required, cost of services, subconsultant
services, safety issues, and our plan for completing
the work in accordance with the contract
requirements while maintaining the appropriate level
of quality in our work and in the final results. These
documents are based on the approved scope and
fee presented to the City but also include additional
detail for our internal operations to keep our team
well-coordinated.
We like to communicate with the City’s project
manager frequently to keep the project team
informed of issues being considered. While email is
quick and easy, we often prefer a phone call or face-
to-face meeting to make sure we understand the
City’s perspective accurately and to build a personal
rapport with City staff. We use basic pieces of
communication software, including Microsoft Outlook
and a collaborative tool called SmartSheet to track,
schedule, and prioritize projects.
Howes Street Waterline Project
Approach
Chris Pletcher, PE, will be the proposed project
manager for the Howes Street Waterline project,
supported by Sam Lowe, PE. This project involves
replacing 4- and 6-inch cast iron waterlines in Howes
Street from Laurel Street to Laporte Avenue based
on their age and condition. Howes Street is a busy
local street with a Portland cement concrete surface.
The waterlines are on the far east and west sides of
the road, with a sanitary sewer in the middle of the
road. Conventional cut and cover installation of new
pipe would be very disruptive to the project corridor
and would require staging and stockpile areas along
the entire project corridor. A city floodplain is mapped
along Howes from Mulberry to Olive Streets, which
precludes stockpile of material in those areas. This
project is immediately north of the Colorado State
University (CSU) campus and includes residences
and access to retail services for many college
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
9
Soil conditions on the project will be important for the
locations where pulling and tail pits are constructed
and for small pit excavations for services. We also
need to know the soil characterization to verify that
the soils can be displaced enough to make room
for the new pipe. Unless the pipe is trenched into
bedrock, this is generally not a problem in this part
of Fort Collins. Based on previous experience by
Connell Resources in this project area, the existing
soils are compatible with trenchless methods. A
geotechnical investigation will be completed by
Brierley Associates to provide soil characterization
and groundwater levels throughout the project
corridor. Based on Robin Dornfest’s input, we
anticipate eight to 12 holes and expect conditions
suitable for conventional and trenchless construction
techniques with minimal groundwater issues.
Reduced Community Impact
In the “old days” we could assume a full shutdown
of the project area, and placement of valves and
services where needed for long-term operations
– typically perpendicular service connections and
valves in the middle of intersections. This works
fine for new construction in an area without active
residential and commercial establishments, but
with a busy street with adjacent residential and
commercial properties, the “old days” approach
creates a tremendous social and environmental
impact. It also requires removing and replacing
a lot of concrete roadway and trench dirt, just to
put it back in place, properly compacted. The new
paradigm with trenchless rehab is that the social
and environmental impacts should be considered
during the design process and can be mitigated
and reduced to “surgical” excavations at clustered
water service taps or valves. Service lines may be
replaced diagonally to minimize excavations.
By reducing the amount of street tear out, we reduce
the project’s carbon footprint in terms of gallons of
diesel consumed. We also minimize the exposure
to potential environmental concerns in the soil
and utility conflicts by using trenchless techniques
where feasible through the existing pipe’s hole in
the ground. This reduces the overall timeline of the
project and impact of street closures, reducing the
negative effects on the local community.
Thinking toward a trenchless construction method,
the real work for this project shifts from designing
the pipe alignment to coordinating the project
sequencing with the contractor and property owners.
A compressed project timeline will allow construction
during the summer when Colorado State University
is not in full session, reducing impacts on the
activities in and around campus. This is an ideal
type of project for APDS because of the coordination
required, while 100% design drawings appropriate
for new construction are not as important to connect
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
10
stress and dimensional changes. HDPE can also be
considered but does not have as many advantages
as PVC. However, HDPE is easier to fuse and does
not require a special license to fuse, saving time and
money.
Final decisions for which type of installation
technique to use rely heavily on contractor input and
at times are changed in the field depending on the
specific challenges discovered during the project.
Pipebursting Parameters
Pipebursting requires 10 to 12 inches of cover
over the pipe for every inch of increased diameter,
including the oversized bursting head. Bursting size-
on-size with an existing 6-inch nominal pipe size
results in an increase of approximately 5 inches in
hole diameter to a burst size of 12 inches outside
diameter and requires 50 to 60 inches of cover. Burst
size is similar for a 4- to 6-inch increase as needed
from Mountain to Laporte Avenue. Pipebursting is
within appropriate limits for a 6-inch replacement
pipe size for this project. This is reasonable for
waterlines that should be at approximately 4.5 feet of
cover. Actual pipe cover should be verified during the
design phase potholing effort.
Obstacles to Trenchless Rehabilitation
Even with the benefit of trenchless installation
techniques, certain features in the water system
will still need to be physically exposed. These
include waterline lowerings and bends greater
than 11.25 degrees, concrete pipe encasements,
repair couplings, service connections, and lateral
connections. Adjacent utilities, if potentially close to
the pipe to be burst or to the HDD drill alignment,
should be exposed to verify no damage due to
cross-bore or soil displacement.
As a result, excavations will occur along the project
corridor, but they can be as small as a 4-by-5-foot
pit for a service connection or meter box, or just the
size needed to expose a hard lowering or lateral
connection. The mainline pipe will also need to be
exposed to reconnect lateral connections, install
valves, or make service taps.
All lateral pipes and services must be severed from
the host pipe to prevent damage during the bursting
process. In-line valves can remain in place and be
burst through. HDD installation has the advantage
that existing services are not disconnected from the
old pipe until the new pipe is installed and tested,
reducing temporary water requirements.
Identification of features that may conflict with
pipebursting goes beyond the typical One-Call
locate and potholing process to include review of
maintenance work orders and repairs that have been
made to the pipe over its lifetime. Stainless steel
repair sleeves and cut-in repair pieces of ductile
iron pipe on the existing cast iron line will cause the
bursting head to drag those pieces along the pipe
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
11
Once any obstacles are identified, the location of
pull-in and tail pits can be determined, and the
project can be divided into construction phases.
Due to the friction of the soil on the new pipe, a pull
should proceed continuously – intermediate fusion
welds are not recommended because they force the
pull to stop while the weld is made and then cooled
to ambient temperature, which can be up to an
hour. Actual contractor experience with this varies –
Connell Resources reported that it was able to make
minor push/pull adjustments to trenchlessly installed
pipe to insert tees and valves without using solid
sleeves. Pull lengths will generally be limited by the
length of the staging and pipe fusing area. Since the
pull-in process occurs over an hour or so, pipe can
often be staged nearby the project but does not have
to be on the project corridor itself. One potential area
for staging may be the CSU oval directly south of
the project area. This would allow up to two blocks
of pipe to be fused together for a single pull, with
a short duration closure of Laurel only during the
actual pull.
Hydraulic Pipe Size Determination
To confirm the suitability of pipebursting for this
project, the future pipe size(s) will be needed. The
existing pipes are 4-inch and 6-inch, both cast iron
and at the end of their design life. Due to the unlined
cast iron, the pipe diameters are likely occluded
with tuberculation reducing the effective diameter
and increasing the pipe roughness, resulting in
reduced pipe capacity. The City’s water system
model records these pipes with a Hazen-Williams
C-value of 76 and 77 – extremely high roughness
and reduced capacity. A single new pipe using a
PVC material will provide full nominal diameter over
the full service lifetime.
While the old rule of thumb was to upsize an old pipe
to maximize fire flow using the City’s water model,
water quality concerns in the distribution system
have changed the thought process. The optimal
approach based on water quality concerns is to
meet minimum fire flows and rely on a well-gridded
distribution system to find the smallest pipe size that
would be acceptable with the least amount of water
aging in the pipes.
Using the City’s water model, a single 6-inch PVC
pipe with a recommended C-value of 140 to 150 has
sufficient capacity to provide 2,000 gpm of fire flows
with a residual pressure of 63 psi. This is more than
adequate and confirms that a larger pipe or parallel
pipes are not required. The existing 4-inch pipe on
the west side of Howes Street can remain in service
until the new line is installed and tested, and then
services can be connected to the new line with a
minimal shutdown time. Fire service considerations
are discussed in more detail below.
The proposed pipe will likely be a single 6-inch,
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
12
Another advantage of using a smaller line size is
that air management for the pipe profile becomes
simpler. With a 6-inch pipe, services can provide
sufficient air relief for normal operations, and
construction venting can occur through temporary
blow-offs or fire hydrants.
Pipe Material Selection
With pipe size determined, the pipe material should
be carefully reviewed. We believe that PVC is the
right material choice for pipe replacement, based on
the following factors:
• Long-term dimensional stability (HDPE has
concerns here).
• Impermeable to groundwater contaminants,
specifically petroleum products (HDPE has
concerns here).
• Does not degrade due to chlorine disinfectant
exposure – important for potable waterlines (poly
piping, particularly services, has concerns here).
• Fusible PVC meets C900/C905 specs and
provides completely restrained joints with no
external fittings or fussy restrained fittings.
• PVC uses standard fittings – easy to work on,
connect to, and repair (HDPE requires oversized
fittings).
• PVC is more efficient in the use of its resins
due to greater strength and can therefore have
thinner wall thicknesses than HDPE.
• PVC can withstand the staging and installation,
using pipebursting techniques with no
compromise in pipe performance; however, the
allowable bend radius for PVC is larger than for
HDPE.
• If a PVC pipe gets damaged during pulling, it
will generally break and be obvious. HDPE may
hide damage due to overstressing that results in
shorter service life even while passing pressure
tests.
Temporary Water Service
For stretches of pipe that can be installed using
trenchless techniques (i.e., not the obstacle
“features” mentioned above), the decision between
HDD and pipebursting often comes down to
maintaining water service during construction.
HDD allows the existing pipe and services to
remain active while the new pipe is installed, while
pipebursting requires temporary water service.
Residential water services are more tolerant of
temporary loss of service, but it is absolutely critical
for commercial fire services that line pressure and
available flow remain constant during construction.
Fire services should be located with extra diligence
to make sure they remain in service. Connecting
fire service lines to a temporary water system
dramatically increases the size of the temporary
water pipes or hoses and may require feeding it
from a more distant connection such as a hydrant
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
13
the lofts and Memory Center building. Between Oak
and Mountain, a single fire line (Key Bank) is already
tied to the 4-inch and can remain until the new line
is installed. From Mountain to Laporte Avenue, the
line on the east side changes to a 4-inch pipe, and
no line exists on the west side. No fire services are
expected along this stretch. The new St. Joseph’s
Catholic School has multiple water services and may
be able to rely on the Laporte and Meldrum feeds
during construction.
Street Closures
Intersections present a number of features on
the water distribution system that need to be
addressed with a construction sequence developed
in conjunction with the contractor. The intersection
of Mulberry and Howes Street is a good example of
this. A 16-inch cast iron transmission main falls along
the north side of Mulberry Street. To make final
connections between the new Howes waterline and
the existing 16-inch Mulberry waterline, an open cut
will be required at some point in time. If pipebursting
is used through this intersection, then the connection
point will need to be opened up twice – once to
sever the lateral connections and install isolation
valves and restraints, and again later to restore the
connections.
If HDD installation were used through this
intersection, then a new pipe could be installed and
tested before open-cutting the street, minimizing
disruption to traffic. With the 16-inch line located on
the north side of Mulberry, the excavation could be
done with only a half-closure of Mulberry, leaving
one lane in each direction on the south side of the
roadway. This would also allow replacement of the
16-inch cast iron pipe east and west of Howes Street
to eliminate the need to close this intersection when
the 16-inch cast iron pipe is ultimately replaced
along Mulberry.
Howes Street Waterline
Proposed Scope of Work
Ayres Associates recommends the following scope
of work for the APDS engineering design and
construction of the Howes Waterline replacement
project.
Task 1 – Meetings, Coordination, and Data
Collection
1.1 Project Team Kick-off Meeting. A project team
kick-off meeting shall be held at the City of Fort
Collins Utilities office with City staff, the City’s APDS
contractor, and Ayres. Ayres shall prepare and
present a project design schedule that encompasses
the design process. Ayres shall prepare and
distribute meeting minutes.
1.2 Progress Meetings. We anticipate progress
meetings every two weeks to keep the design
moving forward. Two weeks provides enough time to
make revisions based on one meeting’s discussion
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
14
the pothole excavating. Ayres Associates will work
with the contractor to identify which utilities are
elevation- or size-critical and require potholing.
Potholing will be done by the City’s APDS contractor.
Ayres Associates will review utility record drawings
and work order records provided by the City to
identify locations of repair work that may impact
pipe replacement. We will specifically tabulate the
domestic and fire service locations and service
address, along with size and service pipe material
using the City’s GIS data and City meter installation
records.
We will also gather floodplain information, which
may constrain soil stockpiles in the southern portion
of the corridor. Utility and floodplain information will
then be compiled into an existing condition base
map for use by the project team.
1.6 Geotechnical Investigation and Report. This task
will include the project geotechnical investigation for
either open cut installation or trenchless installation.
Brierley will drill 10 borings along the project corridor
and provide a report with soil test results and design
recommendations. Robin and / or Lance from
Brierley will also be at many of the project meetings
to provide geotechnical input to the construction
methods and excavation designs.
It will be important to the success of the project to
identify any major events or activities planned in
or near the project corridor, including City street
replacement projects, private maintenance of service
lines in the public right-of-way, and community
events such as the Farmer’s Market, Summer
Concerts, parades, CSU campus events, or other
projects that may be causing traffic detours. With
this information, we can schedule the Howes Street
waterline project to create less disruption and
frustration by users of the project corridor.
Task 2 – Preliminary Design
2.1 Hydraulic Evaluation with InfoWater Model.
Ayres Associates will work with the City using the
InfoWater model to evaluate hydraulically feasible
options for pipe replacement, including elimination
of the 4-inch pipe, replacing the existing 6-inch pipe
with a new 6-inch pipe, need for any pipe larger
than 6-inch diameter, and fire flow evaluation before
and after the proposed improvements. As we have
already checked this in an older copy of the City’s
water model, we expect a brief effort to confirm our
conclusions and document them for this project.
2.2 Pipe Material Evaluation and Geotechnical
Design. Following the hydraulic analysis, we will
work with the team to determine the preferred project
material, balancing cost, availability, ease of use in
the field, long-term performance, and maintenance
considerations. We expect the materials under
consideration to include fusible PVC, certa-lock,
restrained joint PVC, and HDPE. Included in this
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
15
phase, and based on temporary water connections,
these phases may skip an intermediate block until
temporary water can be provided. The phasing plan
will also make an initial attempt to consider where
supplemental valves or hydrants may be needed for
construction testing, temporary water, and isolation
of sections of the project, although this is likely to be
adjusted during construction.
2.5 60% Plan Review and Revision. Preliminary
drawings at approximately 60% design detail will
be provided to the project team for review of the
overall concepts and sequences of the proposed
construction. This is a key opportunity for the
contractor and owner to provide overall systematic
review of the project and identify any areas that
need additional detail or information. At this stage,
the techniques of construction have been generally
determined, but may be adjusted based on actual
conditions in the field. These review drawings are
also an excellent opportunity to request review
from other City departments, businesses along the
corridor, Colorado State University, other utilities, or
other potentially impacted entities.
2.6 Public Outreach Support. Community outreach
is appropriate at this stage of the project for
replacement of an existing waterline. As this is a
rehabilitation project, the overall project concept
should be easily accepted by local residents, and
with minor comments a consensus of informed
consent is expected. Ayres Associates will assist the
City with outreach efforts led by the City’s project
manager. Ayres role will be preparation of project
exhibits for up to two public meetings.
Task 3 – Final Design
3.1 Additional Construction Details. After receipt
of comments from the City and contractor, Ayres
Associates will add additional detail in areas where
needed.
3.2 Summary of Design Quantities. We will develop
a summary of key quantities for discussion with
the contractor. We understand that the APDS
contractor will prepare their own project estimate
and determine line items for payment, and that the
project will likely have an independent cost estimator
prepare an estimate for comparison with the APDS
contractor’s estimate. Our role during that process
is to make sure that the proposed work is sufficiently
described on the construction plans that it can be
estimated and priced consistently.
3.3 Project Specifications. Project specifications will
also be addressed during final design, starting with
the City’s Master Specifications and supplementing
with any additional project specific specifications
needed. As trenchless pipe replacement has been
completed under APDS previously, we anticipate
only minor adjustments to specs that have already
been through the construction process.
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
16
built field notes. This is particularly important for
waterlines as there may be many field adjustments
at tie-in locations.
Mulberry Riverside Storm Sewer
In preparation for this proposal, our project team
has become familiar with all aspects of the Mulberry/
Riverside Storm Sewer project and the challenges
associated with this design through the following:
• Review of drawings provided with the RFP,
including the existing utilities drawing and the
Selected Plan drawing.
• Review of available information online related
to the Old Town Basin, including the flooding
history, Problem Identification Map, and the
Flooding Solution Map.
• Review of previous design and construction for
the Locust Street outfall, which is part of the
same basin and located nearby.
• Review of utility location information available
from the City and pulling a One-Call Test Ticket
for the project area to determine other dry
utilities within the project corridor.
• Conducting project site reconnaissance.
• Holding internal project team discussions
particularly related to the potential tunneling
under Riverside and the railroad.
Experience with Old Town Basin
The Old Town Basin is in the heart of Fort Collins
and includes the Colorado State University (CSU)
Campus. The basin encompasses more than 2,000
acres and was developed during an era when
encroachment in natural waterways was allowed and
before the realization that stormwater management,
including detention and water quality, is critical to the
health of a community. Ayres staff have designed
numerous projects over the years that are closely
related to the Mulberry/Riverside Storm Sewer
project including:
The Locust Street Outfall Project: The Locust
Street outfall is just south of the proposed Mulberry/
Riverside outfall. Andrea Faucett, PE, worked as
part of the Alternate Project Delivery System (APDS)
team in designing and constructing this project. The
102-inch Locust Street outfall under Riverside was
a hand-dug tunnel using a 120-inch O.D. 4 flange
segmental tunnel liner. The annulus between the
carrier pipe and the tunnel liner was grouted. At the
time Locust Street was designed and constructed
the City had planned to connect the Myrtle Street
flows into the Locust Street system; however, that
connection was never built.
CSU Main Campus: Ayres staff has worked for
years on storm drainage improvements for the
CSU campus beginning after the devastating
flood in 1997. Since the flood Ayres staff has
been responsible for maintaining the hydrologic
and hydraulic floodplain models for the campus in
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
17
inadequate inlet capacity, and the extremely
flat grade on Riverside Avenue. In viewing the
topography in the project area, the drainage basins
extend to College Avenue to the west, with the bulk
of the flows entering the project area along Mulberry
and Myrtle Streets. Once these flows from Mulberry
and Myrtle Streets discharge onto Riverside Avenue,
they encounter an extremely flat grade on Riverside
Avenue heading south to Lemay Avenue, which
is why the flows pond and create flooding in the
project area. Flooding along Riverside Avenue is a
significant concern as this is a major travel course
into the Old Town area of Fort Collins and also is
heavily used by trucks accessing Lemay Avenue and
Mulberry Street.
Other costs associated with the flooding, although
more difficult to quantify, are also significant.
Flooding along Riverside Drive would impact the
ability of emergency response vehicles to respond
due to the water flowing in the streets. In addition,
flooding in an urban setting such as this has serious
environmental impacts because the water could
overload the sanitary sewer collection system and
treatment plants. Potential sanitary sewer overflows
would contaminate homes and businesses and
expose the City to potential EPA fines and penalties.
Also, the flood waters would become contaminated
with oil and other household chemicals it comes
in contact with, all of which would be conveyed
downstream to the Poudre River.
Some of these less quantifiable costs may play
a role in developing the final objectives of the
Mulberry/Riverside project as the City continues
to embrace the Triple Bottom Line approach of
balancing social, environmental, and economic
benefits in solving problems.
The proposed Selected Plan provided with the RFP
depicts a new storm sewer heading south along
Cowan Street from Mulberry Street and then turning
east on Myrtle Street before exiting under Riverside
Avenue in the same location as the current outfall.
The benefit of placing the proposed storm sewer on
Cowan and Myrtle Streets is obvious and includes
the following:
• Fewer utility conflicts on Cowan and Myrtle
Streets compared with Mulberry Street and
Riverside Avenue.
• Fewer traffic impacts with construction on
Cowan and Myrtle Streets.
• Fewer impacts to businesses with this proposed
route.
The Selected Plan also appears to show new inlets
on Mulberry and Myrtle Streets. While walking the
project corridor we noted that inlets already exist
in the location shown on the Selected Plan. Part of
the project analysis will include determining inlet
capacity for these inlets and determining if additional
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
18
engineer, and contractor. During this time, egos will
be checked at the door and ideas and concepts
will be shared freely in an atmosphere of trust and
collaboration. Ayres and the APDS team will use the
Old Town Master Plan and the Selected Plan design
for the Mulberry/Riverside project as the foundation
for the design process. Considerable work has gone
into developing the Master Plan solution, and that
information will be reviewed in detail, understood,
and used as we move forward. As additional
information is gathered, and particularly as the City’s
selected contractor provides constructability insight
into the final design, the preferred solution will
evolve from the Master Plan design.
Utility Conflicts
Having worked on the Locust Street outfall design,
Andrea is aware of the number of utilities in
Riverside Avenue that the proposed 60-inch outfall
will need to cross. Because the Mulberry/Riverside
project already has an existing 48-inch outfall, a 60-
inch outfall should fit in the same location as long as
the invert does not need to change dramatically. The
existing utilities under Riverside include:
• 24-inch sanitary sewer
• 12-inch water line
• Large electric duct bank
• Several gas lines
• 10-inch sanitary sewer
All of these utilities will need to be considered when
determining the best location and depth for the
proposed 60-inch outfall from the project area and
when determining what type of tunneling or bore
should be used for this project. Based on information
provided by the City, there appear to be minimal
utilities under Cowan and Myrtle Streets.
Railroad Permit
The proposed 60-inch bore for the Mulberry/
Riverside outfall will need to cross under the
railroad. At the time of the Locust Street project,
this track was owned by Great Western Railway
but managed by OmniTRAX. Our experience with
the railroad companies is that permitting can be a
long lead item, and the process should be started
as early as possible during design. All railroads
require a design package to be submitted along
with the permit that details the construction method;
geotechnical design; location of bore pit; type of
material for the pipe; profile of pipe, including depth
of cover from base of rail; geologic profile through
the bore; designs for thrust blocks, if needed; and
monitoring plan for railroad movement. Ayres dealt
recently with the railroad permitting process while
assisting the City of Fort Collins with the NECCO
Phase 3 project, which involves two bores requiring
permits from Great Western Railway and Burlington
Northern Santa Fe Railway. Based on this recent
experience, we know the permitting process is
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
19
Street pond because those are more closely related
to the 80th percentile storm, or half of the two-year
storm event, which are likely being conveyed in the
existing 48-inch outfall. However, increasing the
Mulberry/Riverside outfall from 48 to 60 inches will
bring more flood flows through the Locust Street
Water Quality pond, so a cursory review of the
capacity of the emergency spillway for the Locust
Street water quality pond should be completed as
part of this project.
The Locust Street outfall water quality pond has
always been slightly undersized based on current
standards because the drain time is 24 hours versus
the more preferable 40 hours. The Ayres team does
not believes this warrants any significant changes to
the Locust Street water quality pond.
Riverside Outfall
The existing 48-inch outfall from Riverside Avenue is
undermined at the downstream end as the following
photo shows.
In addition, the current outlet protection appears to
be dumped concrete rubble, which is not providing
adequate erosion and scour protection. This
issue will be compounded when a larger outfall is
constructed, bringing even greater discharges into
the Locust Street water quality pond. A meandering
swale is downstream of the existing outfall that
ties into the water quality pond swale and winds its
way to the water quality outlet structure. One major
design consideration should be energy dissipation
at the downstream end of the new outfall to limit
erosion and undercutting of the structure.
Above is a photograph of the Locust Street outfall
that included a significant drop from the invert of the
pipe to the apron below for energy dissipation, along
with structurally designed wing walls to facilitate
grading around the structure.
Something similar but on a smaller scale could be
considered for the Riverside Avenue outfall. It does
appear that the outfall is just outside of the Poudre
River floodplain boundary based on a cursory
review of the FIRM maps. More importantly, the
outfall appears to be well outside of the Poudre
River floodway, which is far more critical in terms of
design because of limitations based on “no fill” in the
floodway. Existing wetlands may be impacted by the
new outfall design, but hopefully this can be limited
to avoid the necessity of a 404 permit. Andy Herb
of Alpine Ecological Services is on our project team
if any wetland delineation and/or 404 permitting
is needed. Andy has been a valuable partner on
APDS projects. He most recently assisted Ayres with
the NECCO Phase 3 and the Fossil Creek Stream
Rehabilitation projects.
Floodplain Modeling/Mapping
Because this project is within a City of Fort Collins
mapped floodplain, the benefits of the project will be
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
20
Riverside Avenue and the railroad. Ground
conditions are anticipated to include sandy clay
and clayey sand with minor amounts of gravel and
cobble. Isolated, highly cemented conglomerates
(sand, gravel, and cobble) have been encountered
in this area in the past and may be present along the
alignment. The approximately 280-foot-long tunnel
will be constructed to accommodate a planned 60-
inch diameter carrier. Ideally, the minimum depth
to tunnel crown will be at least 10 feet; however,
the depth will likely be controlled by utility conflicts.
Shallower tunnel depths may complicate tunneling
due to a lack of confining stress at the tunnel horizon
with resulting higher risk of ground loss and surface
settlement above the tunnel.
We anticipate that the most feasible tunneling
methods for the project would likely include
dewatering and hand mining with a shield or
dewatering and using a simple tunnel boring
machine. These methods offer precise grade control
and the flexibility to deal with variable ground
conditions and are compatible with the required pipe
sizes. Either method would require continual initial
tunnel support consisting of jacked steel or other
casing/carrier pipe.
If encountered, shallow groundwater will present a
potential tunneling issue to consider during project
planning. If required and depending on the nature
of the soils, the feasibility of dewatering will be
evaluated along with the required drawdown for the
shaft and tunnel. In the event shallow groundwater
is encountered and dewatering is not possible, a
microtunnel boring machine or similar system may
be required to construct the tunnel.
Face control is critical to the success of tunnel
construction. Depending on the subsurface
conditions, face control measures along with
acceptable tunneling means and methods will be
addressed collaboratively based on the collective
experience of the APDS project team, including the
tunneling contractor.
There appear to be two potential tunnel alignment
alternatives based on information provided in the
RFP. The first alignment would be the same as the
existing 48-inch RCP and would require ingesting
the existing pipe during tunneling. This option would
most likely require use of jacked pipe and a shield
system that uses hand mining to remove the existing
pipe and additional ground. This option would reduce
muck created by tunneling but would likely be slow
because the existing pipe would require demolition
as the tunnel is advanced. A second option would
be an alignment adjacent to or at an angle to the
existing RCP. This option would allow use of jacked
pipe and a tunnel boring machine and likely would
require less time to construct the tunnel, but it may
require abandoning the existing RCP.
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
21
areas during all months of the year, we are confident
we can provide valuable insight to the team on this
issue.
Communication and Quality Control
Large, highly visible projects with social, economic,
and environmental issues (Triple Bottom Line)
require that significant importance be placed on
collaboration, communication, and quality control.
Ayres is committed to the APDS process, which
provides a means for outstanding collaboration. In
addition, Ayres staff prides themselves on providing
high-level quality control and communication. As
residents of the City, our staff is fully aware of the
City’s values, issues, and political environment. We
would further emphasize our focus for this project by
taking the following measures:
• Conduct regular progress meetings with the
promise to “check ego at the door.”
• Provide commitment to include other Potentially
Affected Individuals and/or shareholders in the
process as recommended by City staff.
• Provide meeting minutes for all progress
meetings and other key meetings.
• Support City staff at public meetings, work
sessions, and City Council meetings.
• Prepare project work plan and schedule with key
milestones at project initiation.
• Conduct quality assurance/quality control review
for each submittal by the Ayres project manager.
• Provide cell phone access to project manager
and project engineer throughout the entire
project.
• Provide commitment by team members to return
phone calls or emails within 24 hours of receipt
(sooner if possible).
Mulberry Riverside Storm Sewer
Scope of Work
Project Objective
The goal of this project is to design a storm drainage
system for the flooding that occurs in and around
the area bounded by Mulberry Street on the north,
Cowan Street on the west, Myrtle Street on the
south, and Riverside Avenue on the east. The
flooding in this area occurs primarily because of
inadequate storm sewer and inlet capacity, coupled
with a very flat slope on Riverside Avenue where
much of the current storm flow outlets to. There is
an existing 48” outfall from this area under Riverside
Avenue that is in poor condition that will be replaced
and upsized with this project. The current concept
for the project is to intercept the storm flows on
Mulberry and Myrtle Streets with inlets, convey the
flows in a new storm sewer south along Cowan, east
along Myrtle, and then under Riverside Avenue with
a new 60” outfall into the existing Locust Street water
quality pond. This Scope of Work covers those tasks
necessary to complete the project design under the
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
22
1.3 Monthly Progress Reports. The Ayres project
manager will provide monthly progress reports
throughout the duration of the design phase. The
progress reports will detail the project progress,
hours used, percent complete, schedule, and any
out of contract scope items. The progress reports
will be submitted with the monthly billing statement.
1.4 Ground Survey. This task provides time for
Ayres’ survey subconsultant to obtain detailed
topographic survey data necessary to complete
the design and construction plans. Ayres could
begin the design process immediately using the
recently obtained LiDAR data, which Ayres flew
and processed. For final design and construction,
field topographic data of the project corridor will be
needed. Ayres obtained survey proposals from both
King Surveyors and Washburn Land Surveyors for
this RFP and elected to include Chad Washburn and
his team for this particular project.
1.5 Utility Locates and Potholing. There are some
very critical utilities in Riverside Avenue, including
a large electric duct bank, 24” sewer line, and 12”
water line, to name a few. This scope assumes the
City has not obtained recent locate and pothole
data for the utilities under Riverside and also along
the other streets. In conjunction with the geotech
borings, the utilities will be located and also
surveyed (cost included in Task 1.4), then the critical
utilities will be potholed, and depth measurements
will be taken. This task assumes eight potholes will
be completed by the current City of Fort Collins
potholing subcontractor. Traffic control will be
coordinated with the City of Fort Collins. Ayres will
compile all of the utility information for integration
into the design drawings.
1.6 Public Outreach. On recent projects, public
outreach has been handled primarily by City staff
with Ayres providing assistance where needed.
Public outreach should occur when the design is
finalized and the floodplain reduction or elimination
is known. This scope assumes there will be public
outreach likely through direct contact (knocking on
doors) by the City project manager and also mailings
to the impacted (and benefitting) residents and
business owners, prior to construction. For recent
projects, the City has also developed websites that
property owners can access for information. This
scope assumes that Ayres will provide assistance
and data where needed for this effort, but the bulk of
this will be handled through City staff.
Task 2 – Alternative Analysis
Ayres will use the available Master Plan data for the
hydrologic analysis. The City is currently converting
from the use of ModSWMM to EPA SWMM for
their preferred hydrologic model. Ayres is familiar
with both models and has recently completed the
conversion in another City of Fort Collins basin. This
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
23
2.4 Preliminary Pipe Sizing. Ayres will develop
preliminary pipe sizes for the storm sewer along
Cowan and Myrtle Streets and verify the proposed
60” outfall size under Riverside. Ayres will begin
to develop an EPA SWMM hydraulic model of the
proposed storm sewer with this task. This Task may
require several iterations before the APDS team
selects a solution.
2.5 Downstream Energy Dissipation Structure. What
appears to be missing from the current outfall is any
type of energy dissipation structure that would help
minimize erosion and scour potential. This Task
allows time for Ayres to develop several alternatives
for energy dissipation, discuss with the APDS team,
and complete any structural design required.
Task 3 – Outfall under Riverside and Railroad
A critical component of this project will be how to
construct the outfall under Riverside Avenue and
the Railroad. The entire APDS team will discuss
the various issues related to the outfall including
type of installation (tunnel or bore) dewatering,
bore pit location, railroad permitting, and approval
requirements. The following tasks are for Brierley’s
input on the design of the outfall under Riverside
and the Railroad, along with their recommendations
regarding sub-surface conditions for the project
corridor and open cut portions of the project.
3.1 Subsurface Investigation and Laboratory
Testing. Brierley will direct the drilling of six borings
along the proposed storm sewer alignment. Three
borings will be drilled along Cowan Street and Myrtle
Street and three borings will be drilled along the
crossing alignment under Riverside Avenue and the
Railroad.
3.2 Geotechnical Engineering Report. Brierley
will summarize the findings of the subsurface
investigation in a Geotechnical Engineering
Report for the project and will include design and
construction related recommendations for the
anticipated open cut and tunneled portions of the
project.
3.3 Tunnel Crossing Design. Brierley will provide
plans, specifications, and railroad required
geotechnical submittal information to the Railroad in
support of the tunnel.
3.4 Progress Meetings. This task accounts for the
time required for Brierley staff to attend progress
meetings throughout the design phase of the project.
Task 4 – Permitting
4.1 City Floodplain Permits. The City of Fort Collins
has two permits for projects within floodplains/
floodways. The “No-Rise” certificate is for projects
that will be performing construction within a
mapped floodway. It appears from the Poudre River
Floodplain maps that the work for this project will
be outside of the Poudre River floodway, so a “No-
Rise” certificate will not be needed. It is possible
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
24
comment on the plans. The APDS team will review
each submittal and provide “red-lined” comments on
the drawings returned to Ayres. Ayres will address
the review comments and incorporate changes to
the design as required. Each submittal will consist
of 11” X 17” scalable half-size construction drawings
that include the following:
• Cover (title) sheet
• Personnel, information, legend, and
abbreviations sheet
• Overall project site plan with key
• 2-3 storm sewer plan and profile sheets at a
1”=30’ scale, including laterals
• 2-3 storm sewer detail sheets
• Tunneling/boring details including bore pit
construction details
• 1-2 erosion control and detail sheets
• 2-3 other utility and miscellaneous detail sheets
• Soil boring details
5.3 Technical Specifications. The City of Fort Collins
has a set of Master Specifications that have been
developed over many years and after completing
numerous projects. However, each project requires a
few special technical specifications, which Ayres and
Brierley will prepare.
5.4 Summary Design Report. Ayres will prepare a
Detailed Summary Design Report including written
text, hydrologic and hydraulic analyses, relevant
design calculations, documentation of key design
decisions, and 11” x 17” scalable half-size set of
final construction drawings. The final construction
quantities and cost estimate and estimate of
construction duration (provided by City’s Contractor)
will also be included in the Report. Two copies of
the report will be submitted for review. The City
will review each submittal and provide review
comments. Ayres will address the review comments,
and incorporate the comments/responses into the
subsequent submittal.
Task 6 – Final Floodplain Modeling
Ayres Associates will prepare the series of hydraulic
models of the project area within the Old Town
Basin required by the City of Fort Collins for a
Floodplain Modeling Report. The typically required
modeling series consists of the Duplicate Effective
(DE), Corrected Effective (CE) (likely not required),
Existing Conditions (EC), and the Post-Project-
Designed Conditions (PPD). The hydraulic model
extents will match the effective hydraulic modeling
extents. The approach to each model in the series is
described below.
6.1 DE Model. The effective model will be taken
from the current floodplain mapping, which was
prepared for this portion of the Old Town Basin
in Fort Collins. The effective hydraulic model is a
HEC-RAS model and the DE model will be run using
HEC-RAS. The results of the effective and DE model
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
25
Note: If the City determines that the floodplain has
effectively been eliminated because the residual flow
is less than 200 cfs and/or all of the residual flows
are contained within the streets, then the floodplain
mapping portion of the project could be eliminated
although the design will still need to be documented
in the floodplain modeling report.
6.5 Floodplain Modeling Report. Once the modeling
and mapping have been completed, Ayres will
update the floodplain modeling report with the
final project information and project results. The
Floodplain Modeling Report will follow the guidance
in the City of Fort Collins, Floodplain Modeling
Report Submittal Guidelines, version 1.1, May 2014.
7.1 Construction Phase Services. This task covers
the time for Ayres staff to attend weekly construction
progress meetings, review and approve submittals,
make modifications to the design drawings to reflect
changes necessitated by constructability issues,
and also provide back-up to the City’s APDS project
manager in their absence from the site.
Availability
We have the capacity to support new city of Fort
Collins projects that may be issued under this
contract. As a private employee owned business,
we strive to keep our staff busy and productive. We
are also able to expand our staff to increase our
capacity, while maintaining continuity with our clients
through our senior staff.
Our commitment to the City of Fort Collins is that
they are our first priority for our office and for the key
staff presented herein. We personally have found
that work issued under this contract is the most
satisfying and sustainable work that we provide, and
we will make room in our schedule to accommodate
work for the City, either through adjustment of
other project priorities and schedules, or through
increasing our staff capacity while providing
experienced oversight. A chart showing our project
team availability is included below.
Sustainability/TBL Methodology
Information regarding how our organization strives
to be sustainable is included in a separate section at
the end of our proposal.
Cost and Work Hours
Individual spreadsheets on the cost and work
hours for the Howes Street Waterline and Mulberry
Riverside Storm Sewer projects are included on the
following pages.
0
20
40
60
80
100
Design Construction
% of Time
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
26
Task Description
Project Manager
Chris Pletcher
Project Engineer
Sam Lowe
CAD / GIS
Design Engineer
Pat Schoenecker,
Flo Fiebig
Word Processor / Editor /
ContracAdmin
Clerical
Total Labor
Cost
Direct Costs
(mileage)
Sub-
Consultant
Costs
(Brierley,
Survey)
Total by
Task
Task 1 Meetings, Coordination, and Data Collection
1.1 Project Team Kick-off Meeting 2 2 $ 580 $ 15 $ 350 $ 945
1.2 Design Progress Meetings (Ayres 8, Brierley 4) 24 32 $ 8,000 $ 120 $ 4,037 $ 12,157
1.3 Monthly Progress Reports 7 4 $ 1,340 $ - $ 1,340
1.4 Ground Survey 2 4 2 $ 1,070 $ - $ 15,350 $ 16,420
1.5 Utility Locates and Potholing 1 2 16 $ 2,500 $ 30 $ 3,520 $ 6,050
1.6 Geotechnical Investigation & Report 2 4 $ 840 $ - $ 16,389 $ 17,229
Subtotal 38 44 2 4 $ 14,330 $ 165 $ 54,141
Task 2 Preliminary Design
2.1 Hydraulic Evaluation with InfoWater Model 4 4 $ 1,160 $ 15 $ 1,175
2.2 Pipe Material Evaluation & Geotechnical Design 2 4 $ 840 $ - $ 6,081 $ 6,921
2.3 Identify Open Cut Locations & Temporary Water 2 8 16 32 $ 7,360 $ - $ 7,360
2.4 Phased Construction Plan Sequences 10 20 40 40 $ 14,000 $ - $ 14,000
2.5 60% Plan Review and Revision 16 32 40 24 $ 14,440 $ - $ 14,440
2.6 Public Outreach Support (Exhibits) 4 4 24 $ 3,920 $ - $ 3,920
Subtotal 38 72 120 96 $ 37,800 $ 15 $ 43,896
Task 3 Final Design
3.1 Additional Construction Details 8 24 40 $ 9,000 $ - $ - $ 9,000
3.2 Summary of Design Quantities 2 4 24 $ 3,960 $ - $ - $ 3,960
3.3 Project Specifications 4 8 2 $ 1,830 $ - $ - $ 1,830
3.4 Design Summary Memo 4 16 2 $ 2,870 $ - $ - $ 2,870
Subtotal 18 52 40 4 $ 17,660 $ - $ - $ 17,660
Task 4 Construction
4.1 Progress Meetings (12) & Site Visits (10) 66 66 $ 19,140 $ - $ - $ 19,140
4.2 Design Revisions 8 8 24 $ 5,080 $ - $ - $ 5,080
Subtotal 74 74 24 $ 24,220 $ - $ - $ 24,220
Total 168 242 186 96 4 4 $ 94,010 $ 180 $ - $ 139,917
Ayres Associates - Professional Services Fee Proposal
Howes Street Waterline Replacement Design Fee
Based on Scope of Services dated 3/9/15
LABOR DETAIL AND SUMMARY OF DIRECT AND SUBCONSULTING COSTS BY TASK
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
27
ATTACHMENT B
Task Description
Project Manager
(Andrea Faucett)
Project Engineer
Jaclyn Michaelsen
CAD / GIS
Structural Design
Word Processor / Editor /
ContracAdmin
Clerical
Total Labor
Cost
Direct Costs
(mileage)
Sub-
Consultant
Costs
(Brierley,
Washburn,
Alpine Eco)
Total by
Task
Task 1 Meetings, Coordination, and Data Collection
1.1 Project Team Kick-off Meeting 2 2 $ 580 $ 580
1.2 Progress Meetings (10) 30 25 $ 8,050 $ 200 $ 8,250
1.3 Monthly Progress Reports 5 4 $ 1,020 $ - $ 1,020
1.4 Ground Survey 1 4 2 $ 910 $ - $ 11,220 $ 12,130
1.5 Utility Locates and Potholing 1 2 2 $ 650 $ - $ 650
1.6 Public Outreach 2 2 4 $ 1,040 $ - $ 1,040
Subtotal 41 35 8 4 $ 12,250 $ 200 $ 11,220 $ 23,670
Task 2 Alternative Analysis
2.1 Determine Design Discharges 2 8 $ 1,360 $ 1,360
2.2 Inlet Sizing and Spacing 2 12 $ 1,880 $ - $ 1,880
2.3 Alternative Analysis of Storm sewer layout and profile 2 24 16 $ 5,280 $ - $ 5,280
2.4 Preliminary Pipe Sizing 2 16 8 $ 3,320 $ - $ 3,320
2.5 Downstream Energy Dissipation Structure 2 16 6 16 $ 5,170 $ - $ 5,170
Subtotal 10 76 30 16 $ 17,010 $ - $ 17,010
Task 3 Outfall Under Riverside and Railroad
3.1 Subsurface Investigation and Laboratory Testing 1 1 $ 290 $ 11,675 $ 11,965
3.2 Geotechnical Engineering Report 2 2 $ 580 $ 5,372 $ 5,952
3.3 Tunnel Crossing Design 2 2 $ 580 $ 13,703 $ 14,283
3.4 Progress Meeting Attendance by Brierley $ - $ 5,046 $ 5,046
Subtotal 5 5 $ 1,450 $ - $ 35,796 $ 37,246
Task 4 Permitting
4.1 City Floodplain Permits 8 $ 1,040 $ 1,040
4.2 Corps of Engineers Permits 4 2 4 $ 1,360 $ 4,200 $ 5,560
Subtotal 4 10 4 $ 2,400 $ - $ 4,200 $ 6,600
Task 5 Final Design
5.1 Final Hydrologic and Hydraulic Models 2 32 $ 4,480 $ 4,480
5.2 Prepare Final Construction Plans 4 24 60 $ 10,660 $ 10,660
5.3 Technical Specifications 6 12 $ 2,520 $ 2,520
5.4 Summary Design Report 8 32 6 4 $ 6,350 $ 6,350
Subtotal 20 100 66 4 $ 24,010 $ - $ 24,010
Task 6 Final Floodplain Modeling
6.1 DE Model 4 $ 520 $ 520
6.2 EC Model 16 $ 2,080 $ 2,080
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
28
Page 3 of 3
AYRES ASSOCIATES INC
PROFESSIONAL SERVICES RATE
January 2015 – December 2015
PERSONNEL
2015
($)
Principal Engineer/Senior Associate 195.00
Senior Engineer 175.00
Senior Project Manager 160.00
Project Manager 135.00
Senior Scientist 140.00
Project Engineer III 140.00
Project Engineer II 130.00
Project Engineer I 115.00
Engineer*/Scientist 95.00
Engineering Technician 70.00
Construction Resident 70.00
Senior Designer 115.00
Senior CADD Technician 95.00
CADD Technician 75.00
Word Processor/Technical Editor/Contract Administrator 75.00
Clerical/Billing Clerk 55.00
*Graduate Engineer without P.E. license
**Deposition and Litigation - 50% surcharge on hourly rates
*College graduate in engineering, but not yet licensed
Direct charges including, travel costs, rental costs, and other direct project costs, will be invoiced at actual
cost or based on rates set forth in the attached standard rate schedule. All rates are subject to revision on an
annual basis.
3665 JFK Parkway, Building 2, Suite 100, Fort Collins, CO 80525
(970) 223-5556
www.AyresAssociates.com
2015RATES-DEC-CO.DOC
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
29
Reimbursable Expense Schedule (October 1, 2014)
Page 1 of 2
Last updated 05/04/2014
Policy: It is the policy of Ayres Associates that costs associated with equipment and supplies identified as having been
used on a specific project be charged to that project and not to general overhead. All equipment rates are based on
actual cost and are reviewed/updated annually.
Company-Owned Equipment
ENVIRONMENTAL SAMPLING, MONITORING, TESTING: PHOTOGRAMMETRIC AND SURVEYING:
Depth-Sounder Meters………………………………………. . $286/Day
Dissolved Oxygen Meter…………………………..………....$46/Day Digital Photogrammetric Workstation……………………...$12.45/Hour
FID/PID/OVA…………………………………………..……$55.65/Day GPS……………………………………………………….…..……$79/Day
Groundwater Sampling……………………………..…….$3.35/Sample High Precision Digital Level………………….……………..…$100/Day
Interface Probe………………………………..…………………$50/Day Laser/Automatic Level…………………………………….….$13.25/Day
Nuclear Density………………………………..….………….$70.60/Day Total Station (Robotic)…………………………….......….……$101/Day
Peristaltic Pump…………………………….……………..…$20.25/Day Traffic Counter…………………………….…...………….….$28.10/Day
Sediment Sampler……………………………..…………….…..$44/Day
Soil Sampling………………………………………………$1.35/Sample STRUCTURAL ABOVE/UNDER WATER INSPECTION :
Temp/pH Conductivity Meter…….…………………..……..$13.25/Day Air Tank……………………………………….…….……....…$6.85/Tank
Vapor Sampling……………………………….……………...$56.50/Day Climbing Gear…………………………………………….….….$319/Day
Water Level Meter…………………………….……….……..$13.50/Day Exposure Suit/Diver……………………………………....…..$53.40/Day
General Inspection Equipment……………………..….……$22.25/Day
CONSTRUCTION TESTING AND SAMPLING: NDT/Testing Equipment………..………………………..…..$93.75/Day
Concrete Air Meter………………………………..………….$19.55/Day Scuba Dive Gear/Diver………………………………..……..$33.90/Day
Concrete Flowability Meter……………………….……...….$51.30/Day Surface Supplied Air/Diver………………………….….......$104.85Day
Hammer Drill and Accessories..………………..…………..…$191/Day Underwater Camera…………………………..……………...$19.25/Day
TRANSPORTATION:
All-Terrain Vehicle (ATV)…………………….…….....…………$93/Day
Boat/Motor/Trailer……………………………………………$164.80/Day
Company Trucks……………………………...……….………..$.90/Mile
Personal Auto…………………………………..………Current IRS Rate
Rental Bucket Lift Truck……………………………………….$395/Day
Meals and Lodging
Traveler reimbursement is dependent upon where the project is located and not the accommodations, nor where the office is located.
Meal and lodging rates are consistent with rates posted on the US Government’s Federal Travel Regulations website at
www.gsa.gov/perdiem.
The following table shows the breakdown of the Basic (CONUS) rate for lodging, breakfast/continental breakfast, lunch, and dinner.
The current CONUS per diem rate is $124 for lodging and meals.
Rates effective October 1, 2014
Rate Description Explanation
Basic Rate
Continental U.S. (CONUS)
Lodging Standard Rate $83
M & IE
Meals and incidentals as
listed on federal website $46
Less incidental
expenses (not
reimbursed)
Company reimbursement
excluding incidentals (5)
Ayres Associates rates Net reimbursement rate 41
Breakfast/Continental
Breakfast
7
Lunch 11
Dinner
Rates for meals
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
30
Reimbursable Expense Schedule (October 1, 2014)
Page 2 of 2
Last updated 05/04/2014
Vendor Supplies - Actual Cost
Aerial mapping Equipment rental Models Shipping/postage (mass mlgs)
Aerial Photography Fees/permits/licenses titles Monuments Shuttles and taxis
55 gallon drums Fence posts Multi-spectral scanner Smoke bombs
Airfare Field books Mylar Software – project specific
Aluminum cap domes Filler paper Nail marker tabs Soil sample liners
Aluminum caps Film/development/photos Nails Spatulas
Asphalt lab test Flagging tape Nuclear Density Meter Spikes
All terrain vehicles Flags On-line access fees Stake chasers
Baggage fees Flow testing equipment On-line survey research Stake tack
Batteries Gaskets Oxygen meter Survey markers
Bentonite Generator rental Paper towels Syringes
Bid notice fees Geotechnical testing/lab services Parking fees T posts
Binders GIS data Permit fees Teflon bailers
Binding Gloves (rubber or cloth) Pipe Telephone-(employee reimb)
Bluelines/blueprints GPS equipment Pipettes Temporary help agencies
Bleach Haz Matls Site Database Research Plan fees Temporary housing
Boat rental Hub flags Plastic bags Testing kits
Boat ramp fees Hubs Plastic-coated line Toll fees
Camera Ice Plats/recording fees Total station
Car rentals/ fuel Internet services, faxes Polyethylene bailers Traffic control/protection
Carbon dioxide tubes Lab svcs, testing, supplies Public info meetings/costs Traffic counting equipment
Casing Laser level Presentation materials Traffic data fee
Computer flash drives Lath Printing/Reproduction Tubing
Concrete Legal document costs Public notice fees Tyvek Suit
Concrete coring Legal notice fees Publications Ultrasonic/weld testing
Concrete testing/equipment Light rail fees Rebar Utility exploration trenching
Concrete cylinder molds Locking caps, caps Recording fees Vellum
Corner marker pipe Locking well caps, well caps Reference materials Vials
Data research/services/matls Locks Research fees Washers
Decontamination materials Lumber crayons Review Fees Water filters
Disposable bailers Magic markers Robotic survey equipment Water/Sewer testing equip, sup
Disposable cameras Maps Rope Well materials
Disposable gloves Marking paint Safety equipment Well seals
Distilled water Medical monitoring Safety supplies Whiskers
Dividers and tab stock Medical testing Sampling Jars
Drill bits Meeting room rental Scans
Dry-lock fast plugs Methanol Shelby tubes
Duct tape Micron filters Shipping fees
31
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
Assigned Personnel
Chris Pletcher, PE
Registration: Registered Professional Engineer, CO, 2001; UT, 2014; NE, 2012; IA, 2010; WY,
2007
Certifications: Confined Space Training, Ayres Associates, 2014
Education: BS, Civil Engineering, Clarkson University, 1996; BS, Physics, Roberts Wesleyan
College, 1995
Years of Experience: 18
Chris’s expertise is in civil engineering analysis, design, and construction. He is manager of
municipal engineering at Ayres. He has comprehensive, substantial experience in corridor-
type utilities, including storm drainage and sanitary sewer and water systems. He provides
computer-based demand forecasting, master planning, capacity sizing, preparation of detailed
construction plans, review of plans on behalf of local municipalities, and construction inspection services.
Representative Projects:
• 2011 Fort Collins Inflow Reduction Study, Fort Collins, CO
• City of Fort Collins Water Distribution Model On-Call Consultant, Fort Collins, CO
• City of Loveland Benson Park Pond and 29th Street Culvert Improvements, Loveland, CO
• Crow Creek North Interceptor Sewer Rehabilitation, Cheyenne, WY
• CSU – South Campus Utility and Drainage – Veterinary Medicine Campus Utility Corridor, Fort Collins, CO
• CSU Water Main Design, Fort Collins, CO
• East Pershing Corridor Design and Construction, Cheyenne, WY
• Garfield Avenue – Outfall Phase 4 Improvements, Loveland, CO
• Washington Avenue Phase 4 Final Design, Loveland, CO
Reference:
Chris Matkins, Water Utilities Manager, City of Loveland; 970.962.3712; chris.matkins@cityofloveland.org
Andrea Faucett, PE, CFM
Registration: Registered Professional Engineer, CO, 1990; IA, 2012
Certifications: Certified Floodplain Manager, 2006
Education: BS, Civil Engineering, Colorado State University, 1983
Years of Experience: 31
Andrea’s experience includes hydrology and hydraulics, open-channel hydraulics, roadway
drainage, storm sewer hydraulics, water quality, detention and sediment basins, dam design,
stream stabilization, permitting, floodplain analysis and mapping, CLOMR/LOMR preparation,
wetland restoration, and utility design. She has performed in the project manager/project
engineer role on numerous projects, completing or overseeing the design from the analysis
phase through the construction plan and specification preparation.
Representative Projects:
• City of Loveland Benson Park Pond and 29th Street Culvert Improvements, Loveland, CO
• Garfield Avenue – Outfall Phase 4 Improvements, Loveland, CO
• Washington Avenue Phase 4 Final Design, Loveland, CO
• 29th Street and Monroe Avenue Storm Sewer Design, Loveland, CO
• Canal Importation Pond and Outfall Design, Fort Collins, CO
• Linden Street Utility Improvements – Alternative Analysis, Fort Collins, CO
• Coal Creek Flood Control Project, Larimer County, CO
• North College Corridor Improvements, Fort Collins, CO
Reference:
Stan Myers, Pinnacle Consulting Group; 864.467.0811; StanM@PinnacleConsultingGroupInc.com
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
32
Jaclyn Michaelsen, PE, CFM
Registration: Registered Professional Engineer, CO, 2007
Certifications: Certified Floodplain Manager, ASFPM, 2008
Education: MS, Civil Engineering – Ground Water, Colorado State University, 2009; BS, Civil
Engineering, Colorado State University, 2001
Years of Experience: 13
Jaclyn’s expertise is in hydraulic engineering with experience in drainage analysis and design,
river analysis, floodplain delineation, storm sewer analysis and design, site development, and
wetlands mitigation. She routinely uses common hydrologic and hydraulic models in her design
work, including various versions of the SWMM model, HEC-1, TR-55, HEC-RAS, and HY-8. As
a design engineer, she is an accomplished AutoCAD user.
Representative Projects:
• City of Loveland Benson Park Pond and 29th Street Culvert Improvements, Loveland, CO
• East Pershing Corridor Design and Construction, Cheyenne, WY
• Garfield Avenue – Outfall Phase 4 Improvements, Loveland, CO
• North College Marketplace, Fort Collins, CO
• 29th Street and Monroe Avenue Storm Sewer Design, Loveland, CO
• Canal Importation Pond and Outfall Design, Fort Collins, CO
• Coal Creek Diversion and Clark Reservoir Storage, Larimer County, CO
• Linden Street Utility Improvements – Alternative Analysis, Fort Collins, CO
• Mason Corridor Storm Drainage Alternatives, Fort Collins, CO
• North College Corridor Improvements, Fort Collins, CO
Reference:
Chris Carlson, PE, Civil Engineer, City of Loveland; 970.962.2774; Chris.Carlson@CityofLoveland.org
Samuel Lowe, PE
Registration: Registered Professional Engineer, CO, 2007
Certifications: Class 1 Wastewater Collection System Operator, CO, State of CO, 2010;
Confined Space Training, Ayres Associates, 2014
Education: BS, Civil Engineering, Colorado State University, 2001
Years of Experience: 13
Sam’s training and experience are in the fields of sanitary sewer modeling and flow monitoring,
storm drain design, and surface water hydraulics. His responsibilities include planning and
overseeing flow monitoring projects, data analysis, hydraulic modeling, and scour analysis. He
is proficient in MicroStation, SelectCAD, HEC-RAS, SMS, RMA-2V, Flowlink, and H2OMap
Sewer.
Representative Projects:
• City of Loveland Benson Park Pond and 29th Street Culvert Improvements, Loveland, CO
• Garfield Avenue – Outfall Phase 4 Improvements, Loveland, CO
• 29th Street and Monroe Avenue Storm Sewer Design, Loveland, CO
• Linden Street Utility Improvements – Alternative Analysis, Fort Collins, CO
• North College Corridor Improvements, Fort Collins, CO
• Art Building West Stormwater Pump Station, Iowa City, IA
• Central High School Riske Field Renovations, Cheyenne, WY
• Dry Creek Master Plan EPA SWMM Conversion, Fort Collins, CO
• Crow Creek North Interceptor Sewer Rehabilitation, Cheyenne, WY
References:
Matt Fater, PE, Project Manager, City of Fort Collins; 970.416.2146; MFater@fcgov.com
Rick Parish, Director, Cheyenne Parks & Recreation; 307.638.4357; rparish@cheyennecity.org
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
33
Robin Dornfest, PG, CPG (Brierley Associates)
Robin has 16 years of experience and has completed over 40 projects for the City of Fort Collins, many of which
have used APDS. He lives in Fort Collins and is Brierley Associates Central Region Manager. Specialties include:
geotechnical engineering, engineering geology, tunnel and trenchless design, grouting, support of excavations,
slope stability, expansive soils, ground modification, earth retention systems, geologic hazard evaluations,
embankment dam design, groundwater control systems, and construction dewatering.
Robin has developed extensive experience in geotechnical and geologic support for water, wastewater, and
stormwater projects. His project experience includes pipelines, water and wastewater treatment facilities, open
channels, tunnel and trenchless crossings, groundwater control and dewatering, support of excavations, and
value engineering. He prides himself on bringing recognizable value to his clients and their projects.
Lance Heyer, PE (Brierley Associates)
Lance has over five years of experience and has completed over a dozen projects for the City of Fort Collins,
all of which have used APDS. Mr. Heyer works in Brierley Associates Fort Collins office as a Geotechnical
Engineer. His specialties include: geotechnical engineering, geotechnical site evaluations, geotechnical design
and evaluation for tunneling and various trenchless technologies, embankment dam and levee design, expansive
soils, physical and chemical ground modification techniques, deep and shallow foundation design, and support of
excavation design utilizing various retention systems.
Lance has geotechnical and geostructural engineering experience in support of water supply, wastewater,
stormwater, water storage, mine facility, and development projects. More specifically, his project experience
includes pipelines, water and wastewater treatment facilities, open channels, tunnel and trenchless railroad and
roadway crossings, support of excavations, and mine expansion and closure. Lance enjoys helping his clients
develop the most practical engineering solution to their projects.
Andy Herb, Ecologist (AlpineEco)
Andy, project manager and owner of AlpineEco, has worked as an ecologist for over 10 years. He has
successfully completed projects in most western states, as well as internationally. He has extensive experience
with environmental permitting, especially as it relates to wetlands, wildlife, and botanical work. He has also been
involved in many projects that included National Environmental Policy Act compliance (EAs and EISs),
Endangered Species Act compliance (Section 7 Consultation), and general natural resource management
INRMPs and RMPs). Andy has managed both research-oriented and infrastructure-related projects for nearly all
types of clients in the private and public sectors (including several different branches of the federal government).
He has worked on many projects in the oil and gas, railroad, transportation, transit, and water business sectors,
and has also worked with airports, commercial and residential developers, and mining clients.
Chad Washburn, PLS (Washburn Land Surveyors)
Chad Washburn has more than 20 years of experience in Land Surveying, with emphasis in CDOT right-of-way
plans creation, both large and small land development projects and boundary resolutions in mountain, rural and
urban settings as well as topographic design surveys ranging in size from less than one acre to over 5,000 acres.
He has been using and managing both RTK and Fast Static GPS systems for the last 17 years. He has performed
all aspects of Fast Static GPS Control Networks including planning, fieldwork, calculations, adjustments and
preparation of final control. Chad was appointed to the office of Larimer County Surveyor in 2009 and was elected
to this office in 2010 and re-elected in 2014.
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
34
Lawrence (Larry) Pepek, PLS (King Surveyors)
Larry has been a fundamental asset to King Surveyors since January 1994. He handles all aspects of client
communication including meetings and scheduling for various jobs. He establishes the project proposals and
allocates various tasks to assigned project managers. Throughout his career as a Land Surveyor, Larry has been
exposed to a variety of survey needs. He has worked with Land Developers and Engineers in the annexation and
subdivision platting process. He has followed many projects from conceptual plan to final city or county approval
including single family residential, multifamily, commercial sites and several golf courses. Larry also works with
many of the local municipalities by putting together survey scopes for capital improvement projects, drainage
improvement projects and for water and sewer line replacement projects. More recently, Larry has worked with
the local governments by providing surveying guidance with 2013 flood related projects.
In addition to working with Land Developers and the local municipalities he has also worked with many of the local
engineering firms in Northern Colorado on a wide range of projects, from runways at the Greeley-Weld County
Airport to improvements on Waste Water Treatment Facilities in Fort Collins, Loveland and Greeley. Larry works
closely with Colorado State University and their numerous on-going projects including the new campus stadium.
In most cases, Larry discusses the scope of the project with the lead engineer and develops a scope of the
surveying services needed. He then provides the client with a proposal of fees. Once given the notice to proceed
he coordinates the completion of the survey work and reviews and certifies the completed work
Lastly, Larry has extensive knowledge of Right-of-Ways and Route Surveys and has been involved with several
large roadway and pipeline projects including the Bellview transmission water line that runs from the Bellview
Water Treatment Plant, south west to Greeley and more recently the rebuilding of Fish Creek Road in Estes Park
that was washed out by the flood. He also is very familiar with the preparation of CDOT right-of-way plans for
state and federally funded roadway projects. He understands all of the information that is contained in the plans
and level of care that it takes to prepare them.
Sustainability/TBL Methodology
Office Sustainability
Over the past several years, Ayres Associates
has adopted several sustainable office practices
that make a positive contribution to the social and
environmental atmosphere in the office, while also
having a small but positive economic impact on our
company operations.
Ayres values the health of its employees and has
an active health committee focused on employee
wellness as a means to improving overall employee
health. Each year the committee organizes a health
competition centered on bringing awareness to and
improving the daily health choices of participants.
Participation is voluntary but is encouraged with a
financial incentive upon completion in the form of
an employer contribution to an individual’s Health
Savings Account. This provides an opportunity for
the individual to pursue more healthy lifestyle options
that will lead toward increasing each individual’s
life-long health. Overall, we hope to decrease the
overall cost of health care for the employee and
the company. The social impacts are very evident
in the camaraderie of the teams that form and the
friendly competition between teams. To encourage
an environment where employees are supported
in these lifestyles, our office has provided storage
space for sports equipment to use during lunch as
well as temporary bike storage during inclement
weather for those who commute by bicycle.
Sam Lowe, one of our Key Staff and a Project
Engineer, doesn’t like to see things go to waste. It
is so important to him that he keeps two buckets
at the office to collect compostable waste. One
small bucket lives in the kitchen, which we are all
encouraged to fill. All coffee grounds and other
organics are welcome. Diligently at the end of every
day he empties this bucket into a larger sealable 5
gallon bucket. At the end of each week he brings
the large bucket home. He has been composting
the majority of our office coffee grounds and organic
waste since 2011. Every time he brings the bucket
home he weighs it and records the amount. Since
2011 he has composted (and saved from our local
landfill) 2,115 lbs of material.
Our office building currently provides recycling
only for paper products, and not for plastics or
metals. Our administrative staff have placed a bin
in the kitchen area for aluminum cans. Plastics are
collected at the office and put in a home recycling
pickup to keep them out of the landfill. We also
collect used batteries for appropriate disposal,
typically through a retail battery store such as
Batteries Plus. Batteries have become a significant
item due to our flow monitoring work, which
produces 2 – 6 volt lantern batteries every three
months per flow monitor unit.
We recently moved office locations and in the
process had many extra cubicle parts and general
office equipment. Instead of throwing these items
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
of effort and material resources to provide
community benefits of reduced flooding, improved
stormwater quality, higher quality and more reliable
drinking water, and more efficient utility operations,
while costing the community a level of disruption,
temporary noise and dirt in their neighborhood, and
a financial investment.
Avoiding social, environmental, and economic costs
altogether severely limits maintenance and renewal
of infrastructure, ultimately leading to catastrophic
impacts that exceed the initial impacts. The
challenge for the City, consultants, and contractors
working on infrastructure is how to make the
necessary investments into the City’s utilities while
balancing and minimizing the social, environmental,
and economic impacts. Utility project decisions are
not just about economic cost, but about the best
“thing to do” and the best “way to do it” for all parties
involved, including consideration for the members
of our community who may not be engineers or
contractors, but who live and work in the areas
impacted by our projects.
How do we incorporate sustainable practices into
our projects? During the course of a project, we look
at the project through many different lenses. What
will this project look like to a local business or their
delivery trucks? What impact will it have on a local
resident? Does the project schedule interfere with
community or cultural events? Is there an alternative
way to do the project that would change the project
schedule? Would an alternative approach create
less impact to residents along the project? Are
there project choices that create a smaller footprint
on material resources? Is there environmental risk
that we can minimize by using different project
approaches and yet still achieve the overall goal of
improving the City’s infrastructure?
Within the projects presented in this proposal, we
have incorporated these sustainable concepts into
our intentions for design. On the Howes Street
Waterline project, the concept of using trenchless
rehabilitation techniques is based on reducing the
social and environmental impact of the project during
construction, while achieving the original goal of
waterline replacement. At times, cost may not be
the most significant factor, but it is still considered.
More efficient use of material resources can reduce
economic and social costs at the same time while
reducing environmental risk – that is the type of
win-win-win that we seek with a triple bottom line
approach to sustainability.
On the Mulberry Riverside Storm Sewer project,
tunneling under Riverside Avenue may increase
project cost, but it dramatically reduces economic
and social costs related to traffic detours, while
preventing heavy traffic in local neighborhoods.
Improving the outlet structure provides water
quality benefits to additional areas in the Old
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
RFP 8073 Engineering Services for Future Water, Wastewater & Stormwater Facilities Capital Improvements Page 9 of 19
EXHIBIT A
PROPOSAL ACKNOWLEDGEMENT
Consultant hereby acknowledges receipt of the City of Fort Collins Utilities’ Request for
Proposal and acknowledges that it has read and agrees to be fully bound by all of the terms,
conditions and other provisions set forth in the RFP. Additionally, the Consultant hereby
makes the following representations to Utilities:
a. All of the statements and representations made in this proposal are true to the best of
the Consultant’s knowledge and belief.
b. The Consultant has obtained all necessary authorizations and approvals that will enable
the Consultant to commit to the terms provided in this proposal.
c. This proposal is a firm and binding offer, for a period of 180 days from the date hereof.
d. I further agree that the method of award is acceptable to my company.
e. I also agree to complete the proposed Agreements with the City of Fort Collins within 30
days of notice of award.
f. If contract is not completed and signed within 30 days, City reserves the right to cancel
and award to the next highest rated firm.
g. I acknowledge receipt of addenda.
Consultant Firm Name:
Physical Address:
Remit to Address:
Phone:
Authorized Agent of Firm Name:
Signature of Authorized Agent:
Primary Contact for Project:
Title: Email Address:
Phone: Cell Phone:
Ayres Associates
3665 JFK Parkway, Fort Collins, CO 80525
Same as above
970.223.5556
James D. Schall, PhD, PE
Chris Pletcher, PE
Manager - Municipal Engineering PletcherC@AyresAssociates.com
970.223.5556 970.218.5546
3
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
15-31D
BRIERLEY ASSOCIATES CORPORATION
STANDARD FEE SCHEDULE
January 2015
1. Fees for services will be based on the time worked on the project by staff personnel plus reimbursable expenses. The hourly
fee for professional services will be charged as follows unless otherwise noted in the proposal:
Principal/Senior Consultant II $242
Senior Associate/Senior Consultant I $193
Associate/Senior Project Manager $185
Senior Professional II $145
Senior Professional I $129
Professional II $110
Professional I $98
Staff Professional II $91
Staff Professional I $79
Engineering Technician II $93
Engineering Technician I $65
Administrative $65
2. Overtime hours will be charged at straight time rates.
3. Fees for laboratory tests will be computed on a ‘per test’ unit basis. Current laboratory test unit rates are as follows:
Laboratory Test Unit Rate ($)
Atterberg Limits 63.00
Full Gradation 99.00
-200 Wash 52.00
Standard Proctor 120.00
Modified Proctor 133.00
Relative Density 220.00
Swell/Consolidation 84.00
Swell/Consol (Remold) 120.00
Unc. Comp. Strength 78.00
Sulfate 26.00
Hydrometer 131.00
4. The fee for direct non-salary expenses will be billed at our cost plus a ten (10) percent handling fee and shall include the
following: a) Transportation or subsistence expenses incurred for necessary travel, such as use of personal or company vehicles
at IRS allowed mileage rates; use of public carriers, airplanes, rental cars, trucks, boats or other means of transportation; b)
Reproduction and printing costs for reports, drawings and other project records; c) Express deliveries such as FedEx.
5. Subcontractors engaged to perform services required by the project will be billed at our cost plus ten (10) percent.
6. Communications and computer expenses will be charged at a flat rate of three and one half (3.5) percent of the total gross
labor charges to include normal telephone, e-mail, faxes, long distance telephone, mailing of correspondence, in-house
computer use and computer aided design and drafting (CADD).
7. Specialized computer usage, separately defined in the proposal for specific client needs, will be charged as identified in the
proposal.
8. Payment: Invoices generally are submitted once a month for services performed during the previous month. Payment will be
due and payable upon receipt of invoice. Interest may be added to accounts in arrears at the rate of one and one-half (1.50%)
percent per month on the outstanding balance. In the event Brierley Associates must engage counsel to enforce overdue
payment, Client will reimburse Brierley Associates for all reasonable attorney’s fees and court costs.
9. The billing rates given above are subject to change at the beginning of each year, unless noted otherwise in the signed
proposal.
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
2015 Standard Hourly Rate Schedule
Effective: December 14, 2014
Registered Land Surveyor $99.00/hr. (RLS)
Project Manager $88.00/hr. (PM)
Draftsman:
Senior CAD Technician $84.00/hr (SR Cad)
CAD Technician I $76.00/hr. (Draft I)
CAD Technician II $71.00/hr. (Draft II)
Field:
Senior Surveying Technician $84.00/hr. (SR Tech)
Surveying Technician I $76.00/hr. (S Tech I)
Surveying Technician II $71.00/hr. (S Tech II)
Crew Rate (2-man) $144.00/hr. (2-man)
GPS Crew $134.00/hr. (GPS Crew)
Expert Witness $198.00/hr (EW)
Clerical $48.00/hr. (Cler)
A.T.V. $30.00/hr.
Boat $30.00/hr.
Copies:
8 ½ X 11” $0.15/copy
8 ½ X 14” $0.20/copy
11 X 17” $0.25/copy
18 X 24” Prints $1.50/copy
24 X 36” Prints $2.00/copy
24 X 36” Mylars $8.00/copy
**All copies & meetings are billed in addition to estimates, unless otherwise noted.**
**All fees are subject to change without notice**
650 East Garden Drive I Windsor, Colorado 80550 I p. 970.686.5011 I f. 970.686.5821
www.kingsurveyors.com
Water, Wastewater, and Stormwater Facilties Capital Improvements
City of Fort Collins
Washburn Land Surveying, LLC – Phone 970-232-9645 – Cell 970-430-5180
www.WashburnSurveying.com
January 1, 2015
Washburn Land Surveying, LLC
2015 Rate Sheet
Hourly Rates
Field Crew – One Person $105/hour
Field Crew – Two Person $150/hour
Office Surveyor $80/hour
Professional Land Surveyor $125/hour
These rates are subject to change. Changes to the hourly rate for existing contracts will be
preceded by written notice, at least 30 days prior to the effective date of the change.
Sincerely,
Washburn Land Surveying, LLC
Chad Washburn, PLS
Principal
AlpineEco
AlpineEco’s rate for Andy Herb is $120/hour.
Town stormwater basin, while reducing risk of
embankment erosion in an environmentally sensitive
area. We look for these key benefits throughout the
project design as a way to improve the quality of life
and sustainability of our community through the work
that we do.
out we reached out to the community to see if any
local businesses or schools were interested. Our
cubicle parts were acquired by the Curves work-
out facility to provide consultation booths. We
also had a surplus of approximately 700 three ring
binders. These binders were picked up by a teacher
from Polaris Expeditionary Learning School and
are currently being used for Individual Student
Presentation of Learning binders. Many binders
were also given to Blevins Middle School and are
being used for student Engagement Binders.
In the process of moving we reviewed what office
practices we could move to an electronic format.
One process we have had success with is how we
manage our Sign In / Out Board. We track staff
and company vehicles using an online tool that is
accessible to staff in any office or out in the field.
We have also optimized the size of our vehicle fleet
to provide more efficient use of fewer vehicles. As a
result of this process, we have recently reduced the
size of our fleet by two trucks, providing a positive
impact on the environment through reduced fuel
consumption and maintenance.
Project Sustainability
We believe that it is important to incorporate
sustainable concepts into our design work in addition
to our office practices. Infrastructure design and
construction projects require significant expenditures
Water, Wastewater, and Stormwater Facilities Capital Improvements
City of Fort Collins
segregated by type
23
First & Last Day of
Travel (Meals @ 75%)
Ayres net meals rate
reimbursed at 75% $30.75
Project Location Look-up:
1. Meal and lodging rates differ by location.
2. Go to www.gsa.gov/perdiem for a
map of the continental United States.
3. Search the projects location by City,
State, or Zip Code.
4. Cities not appearing on website may be
located within a county for which rates are
listed.
5. To determine what county a city is in, visit
www.naco.org/pages/default.aspx
and click “About Counties”.
6.3 PPD Model 4 $ 520 $ 520
6.4 Update Floodplain Mapping 4 4 $ 980 $ 980
6.5 Floodplain Modeling Report 8 60 8 4 $ 10,220 $ 10,220
Subtotal 8 88 12 4 $ 14,320 $ - $ - $ 14,320
Task 7 Construction Phase Services
7.1 Construction Phase Services (assumes 15 weeks duration) 16 60 24 $ 13,120 $ 200 $ 13,320
Subtotal 16 60 24 $ 13,120 $ 200 $ - $ 13,320
Total 104 374 144 16 12 $ 84,560 $ 400 $ 51,216 $ 136,176
Ayres Associates - Professional Services Fee Proposal
Mulberry Riverside Design Fee
Based on Scope of Services dated 3/9/15
LABOR DETAIL AND SUMMARY OF DIRECT AND SUBCONSULTING COSTS BY TASK
Project Team Availability
Chris Andrea Jackie Sam
will be compared.
6.2 EC Model. This scope assumes that the CE
and EC models will be identical for this project. The
purpose of the EC model is to update the input from
the CE model to reflect conditions as they are today.
Because there have been no substantial changes
(i.e. structures built) etc., or major changes in the
topography since the original model was completed,
there should be little or no difference between the
CE model and the EC model. The CE model will,
therefore, be omitted from this Scope of Work.
Because new topographic information will be
obtained for the project area, Ayres will develop
an Existing Conditions model of the floodplain
mapping limits using the new data. The purpose of
the EC model is to incorporate the new topographic
information for the modeling and mapping as well as
the new Existing Conditions EPA SWMM hydrology
prepared for the Old Town Basin. The cross sections
will be cut at the same locations as the DE model.
6.3 PPD Model. Ayres Associates will develop a
PPD Model of the floodplain beginning just north
of Riverside and Mulberry and ending just north of
Lemay and Riverside, where the effective floodplain
is modeled. The model will include any physical
changes caused by the project (should be none).
The biggest change should come from the revised
hydrology with more of the flows being intercepted
by the new larger storm sewer and outfall. New
floodplain mapping will be developed with this task
also to reflect the Proposed Project condition.
6.4 Update Floodplain Mapping. In conjunction with
Task 6.3, the floodplain mapping for the limits of the
study will be updated also.
this project will be within the Poudre River floodplain
depending on where the outfall is located and where
the bore pit is located. Therefore, it is likely that a
City of Fort Collins Floodplain Use Permit will need
to be filled out and submitted. Ayres has significant
experience with both of these permit types.
4.2 Corps of Engineers Permits. In looking at the
proposed project outfall and previous wetland
mapping that was done for the Locust Street water
quality pond, it does appear the project construction
could impact existing wetlands. All steps should
be taken to limit the wetland impacts to less than
0.1 acres to avoid obtaining a 404 permit, however
that may not be possible. Ayres has included Andy
Herb on our team for wetland delineation, avoidance
options, and permitting requirements.
Task 5 – Final Design
5.1 Final Hydrologic and Hydraulic Models. Once
the final alignment and profile has been selected,
Ayres will finalize the EPA SWMM hydrologic and
hydraulic models. An important outcome of this
modeling exercise will be to quantify the residual
storm flows that will be remaining in the streets as
this will determine if there is a residual floodplain to
be mapped after the project is constructed. There is
further discussion on the post project modeling and
mapping under Task 6.
5.2 Prepare Final Construction Plans. Ayres will
prepare Final Construction plans for the Mulberry/
Riverside storm sewer using AutoCAD. Design
submittals shall be made at the 75% complete
and 95% complete level. Enough copies will
be submitted for the APDS team to review and
scope assumes the hydrologic model will have been
converted to EPA SWMM outside of this Scope of
Work. It is assumed for this Scope of Work that both
the hydrologic modeling of the project area and the
hydraulic modeling of the proposed storm sewer will
be done with EPA SWMM.
2.1 Determine Design Discharges. Ayres will
determine the design discharges for the project
area for several storm events including the 2-, 25-,
50- and 100-year floods. Because the goal is to
eliminate flood risk to the homes and businesses
in the project area and also limit or eliminate flood
depth along Riverside, several design storms should
be evaluated to maximize the benefit and minimize
the cost. Ayres will work with the APDS team to
understand the project goals and make sure the final
design satisfies those goals.
2.2 Inlet Sizing and Spacing. Based on the results
of Task 2.1, Ayres will develop preliminary locations
and sizes for additional inlets along Mulberry and
Myrtle Streets. Inlets will be sized using the design
tools from the Urban Drainage and Flood Control
District.
2.3 Alternative Analysis of Storm Sewer Layout and
Profile. Based on the utility information obtained
in Task 1 and the design information developed
in Tasks 2.1 and 2.2, Ayres and the APDS team
will begin to develop several options for the storm
sewer layout and profile. The profile will likely be
driven by utility conflicts, constructability, impacts to
adjacent property owners, downstream outfall invert,
railroad requirements, type of tunneling or boring
selected, environmental impacts, environmental
enhancement, and maximizing the flood reduction
benefit while minimizing the cost.
Alternative Product Delivery System (APDS) which
means the owner, engineer, contractor, and other
persons as needed will be present and active during
the design.
Ayres Associates’ project manager will be Andrea
Faucett, and project engineer Jaclyn Michaelsen.
Task 1 – Meetings, Coordination, and Data
Collection
1.1 Project Team Kick-off Meeting. A project team
kick-off meeting shall be held at the City of Fort
Collins Utilities office with City staff, the City’s APDS
contractor, and Ayres. Ayres shall prepare and
present a project design schedule that encompasses
the design process. Ayres shall prepare and
distribute meeting minutes.
1.2 Progress Meetings. This task provides time for
Ayres staff to meet with the design team (owner,
engineer, and contractor) on a bi-weekly basis from
the preliminary design through final design. Also
present at these meetings will be any other critical
team members, including Brierley Associates,
for input on the tunnel or bore under Riverside
Avenue. The APDS team may also elect to include
BT Construction during the design meetings to
obtain their constructability input on tunneling vs.
boring under Riverside. In addition, other Potentially
Affected Individuals (PAIs) or groups will be included
as needed to help facilitate the design. These other
impacted PAIs could include utility owners, adjacent
property owners, and other City of Fort Collins staff
that need to provide input or need to approve the
design. Ayres shall prepare and distribute meeting
minutes following each Progress Meeting. Ten
progress meetings are included in this scope and
cost.
Based on the site layout and the planned open cut
installation of a new RCP in Myrtle Street, a single
shaft could be considered in Myrtle Street. If this
alternative is selected, the shield, tunnel boring
machine, or microtunnel boring machine could
be extracted by excavation at the terminus of the
tunnel at the outfall. This approach would reduce the
need for a second shaft and minimize construction
activities and laydown in the existing natural area.
The APDS process is well-suited to tunneling
projects, and the system allows for early contractor
involvement and risk evaluation. The APDS project
team will work closely with the tunnel contractor
to discuss and evaluate all alternatives outlined
and others that will likely arise during the design
process to select a tunneling method and alignment
that meets all project goals and reduces risks to a
level acceptable by the team. As noted previously
the APDS process also falls directly in line with the
Triple Bottom Line process of determining the best
solution considering the social, environmental, and
economic impacts of the project.
Construction Impacts
Because project sections are within areas with
significant traffic (Mulberry) and business activity,
construction scheduling and sequencing must be
considered to minimize impacts. As noted in the
section on tunneling and jacking, impacts to high
traffic areas can be reduced depending on the length
and type of tunneling/jacking used. The impacts
need to be weighed against the significant costs
associated with boring and/or jacking. Considering
our project team’s experience with numerous storm
sewer construction projects in highly urbanized
modeled, and proposed project floodplain modeling
and mapping will be produced. Ayres has completed
numerous floodplain modeling reports for the City,
along with many CLOMR/LOMR studies that are
similar.
Tunneling/Jacking
The project includes one potential tunnel under
lengthy.
The railroad also requires the design to meet the
specifications of the American Railway Engineering
Association (AREMA). The AREMA specifications
include requiring at least 5.5 feet of cover from base
of rail. The specifications also require all pipes to be
encased in either steel or cast iron. However, for the
NECCO project we were able to obtain a variance
for this requirement by using steel pipe for the bore
itself.
Water Quality
Our understanding of the project is that the Mulberry/
Riverside outfall will continue to discharge into the
Locust Street Outfall water quality pond. The Locust
Street water quality pond was constructed with
approximately 11.5 acre-feet of storage. Because
the Mulberry/Riverside outfall existed when the
Locust Street pond was built, the design had already
accounted for inflows from this area. Increasing the
storm sewer in the project area and the outfall pipe
size from the Mulberry/Riverside project area should
not increase water quality flows into the Locust
inlets are necessary to meet the project goals. The
concept of intercepting the storm flows before they
enter the area that floods and conveying them in the
storm sewer is good, and was used successfully on
the CIPO project.
The construction of the Mulberry/Riverside outfall
project should reduce emergency response time
during a flood event; reduce damage to personal
property, such as vehicles; reduce closure time for
businesses impacted by flooding; and reduce the
chances of overloading the sanitary sewer system
with flood waters and contaminating residences and
businesses.
Project Approach
Ayres Associates and the rest of the APDS team
will approach this project with a sincere effort to
develop the most advantageous solution, balancing
the social, environmental, and economic costs and
benefits of the project. Having the contractor, owner,
engineer, and other experts (Brierley, AlpineEco)
involved during design allows all reasonable design
alternatives to be fully vetted and selection of the
best alternative.
Alternative Analysis Phase
Our previous stormwater utility design projects have
included an Alternative Analysis Phase. However,
because some work has already been completed in
the project area, and because the proposed route
for the storm sewer has already been selected,
it appears the Alternative Analysis Phase can
be shortened significantly. One primary benefit
gained during the Alternative Analysis Phase of an
APDS project is collaboration among the owner,
addition to the floodplain mapping. Currently, Ayres
is developing a 2-dimensional hydraulic model of
the entire CSU campus using SRH software to more
accurately define the base flood elevations campus-
wide and allow CSU to better regulate its expansions
and improvements. It should be noted that the
primary outfall for the CSU campus is a connection
to the Locust Street outfall across College Avenue
that was completed during the construction of the
Locust Street system.
Canal Importation Ponds and Outfall (CIPO): Ayres
staff worked with the City of Fort Collins, Anderson
Consulting Engineers, and Garney Construction as
part of the APDS team for five years on the design
and construction of the CIPO project, which was built
in phases. Ayres was primarily responsible for the
storm drainage infrastructure design. The benefits
of the CIPO project on the Old Town Basin were
dramatic, particularly at the CSU campus border
of Shields and Elizabeth Streets. Before the CIPO
project the Canal Importation Basin discharged
approximately 1,248 cubic feet per second (cfs) onto
the campus. After construction of CIPO, the inflow
onto the CSU campus from the basin was reduced
to 457 cfs.
Project Background
In viewing the current floodplain map for the
project area there appears to be approximately 13
commercial properties and 36 residential structures
that would experience flooding during a 100-year
storm event. There does not appear to be any public
facilities such as schools or health care facilities
within the project area. The flooding appears to
be caused by an undersized storm sewer system,
3.4 Design Summary Memo. A brief technical memo
will be prepared to document the basis of design and
decisions made during the design meetings.
Task 4 – Construction
4.1 Progress Meetings and Site Visits. During
construction, the control and direction of the project
moves from the engineer to the contractor. As a
result, instead of leading meetings and setting the
agenda for discussion, Ayres will participate in the
Contractor’s weekly meetings and be available
for occasional visits on site by the project design
team. Typically, the City provides an APDS Project
Manager as the full-time resident engineer and
the design consultant is involved part time during
construction to continue the collaborative APDS
effort through construction for any field challenges
that arise. This is the level of effort we have
budgeted. If the City desires a full-time consultant
Resident Engineer, we can provide staff for that
with reasonable notice. We estimate a construction
duration of approximately three months, with
an anticipated start of construction field work
immediately following Memorial Day and completion
of field work by mid-August prior to students moving
in before CSU starts classes. We recommend that
the project proceed from south to north to move
away from impacts at CSU. Activities in and around
the project corridor will impact the construction
schedule.
4.2 Design Revisions. Design revisions or additional
details needed for construction will be provided. At
the completion of construction, Ayres will provide
record drawings based on the contractor’s as-
effort will be Brierley’s design recommendations.
2.3 Identify Open Cut Locations and Temporary
Water. Ayres Associates will work with the City’s
APDS contractor to evaluate the Howes Street
Waterline to determine locations that will need to be
open-cut, including lateral connections, services,
and obstacles to trenchless pipe replacement.
Based on these required excavations, we will
cooperatively work to determine the best approach
to replacing pipe in between those locations with
trenchless techniques. Wherever possible, we want
to minimize the social and environmental impact to
the residents along the project corridor by reducing
street closures and closure duration, minimizing
loss of access to business and residences, and
maintaining continuous water service. These
discussions will result in a project sequencing plan
that includes site preparation work, temporary water
requirements for domestic and fire services, pull and
tail pit locations, and pipe staging areas.
2.4 Phased Construction Plan Sequence. Each of
the project areas defined above will be shown on
a phased construction plan, showing the work that
needs to be done for each section of the project and
the anticipated method of the work. This will allow
the project to minimize the number of customers
on temporary water or experiencing neighborhood
disruptions and also allow a sequence of work
that will be logical and efficient for the various
construction specialties involved, including water
mainline, testing, service restoration, backfill,
concrete replacement, and final cleanup. We
anticipate one to two block sections of work in each
and have them ready at the next meeting. We
also believe that it is important to have all key staff
available at the bi-weekly meetings. This will include
the Ayres Project Manager and Project Engineer,
along with the Geotechnical Engineer(s). Other
specialty material or equipment suppliers may
be brought to the meetings by the contractor as
needed.
1.3 Monthly Progress Reports. The Ayres project
manager will provide monthly progress reports
throughout the duration of the design phase. The
progress reports will detail the project progress,
hours used, percent complete, schedule, and any
out of contract scope items. The progress reports
will be submitted with the monthly billing statement.
1.4 Ground Survey. During this task, the project
surveyor will collect topographic data extending to
top back of walk on either side of Howes Street.
Topographic and right-of-way survey for the project
corridors, will include curb and driveway locations,
meter pits, valves, and adjacent utilities. We have
also included time for two additional mobilizations
for utility pothole staking and recording pothole
elevations. We have relied on survey pricing
from King Surveyors but can use Washburn Land
Surveyors or one of our other partner survey firms if
desired.
1.5 Utility Locates and Potholing. Locations for utility
locates will be identified along the pipe alignments
and also for adjacent utilities that may be impacted
by installation pits and other construction. Locates
will be called into One-Call by the contractor doing
on an adjacent city block. Specific fire service
considerations are listed below.
The block from Laurel to Myrtle appears to have
one fire service (CSU Foundation) on the existing
4-inch line – this fire service will remain on the
4-inch until it can be connected to the new pipe on
the opposite side of the street. Myrtle to Mulberry
does not appear to have any fire services along
Howe Street. Just south of Magnolia, the large
building with mixed commercial use (Park Lane
Towers) has a fire service line served by the existing
6-inch pipe. This fire service could be temporarily
connected to the old 4-inch line during construction.
The Federal Building Post Office between Magnolia
and Olive is similarly tied to the 6-inch pipe and
could be temporarily connected to the 4-inch line
during construction. Between Olive and Oak Streets,
the high-rise lofts have a fire service, and a lateral
connects the 6-inch and 4-inch Howes waterlines
and provides the only service to the Rockey
Mountain Memory Center building to the west on
Oak Street. Alternative sources for temporary water
are a long distance from the intersection of Howes
and Oak – the 4-inch will be a critical feed to both
optimized for potable water quality concerns in a
well-gridded distribution system and located along
the east side of Howes similar to the existing 6-inch
pipe.
Based on the hydraulic model, this project is not
driven strictly by hydraulic concerns as the existing
system provides sufficient fire flows with the existing
pipes. Rather, the old pipes create water quality
problems due to the tuberculation of iron deposits
inside the pipe that get disturbed whenever water
velocity in the pipe increases from a typical rate.
This can occur during peak summer demands or
during waterline flushing, both of which are normal
and typical events in the water system. The model
represents this condition by showing that water
velocities without a fire flow demand are on the order
of less than 0.1 foot/second, while fire flow demands
can increase the velocity to nearly 6 feet/second,
disturbing any loose tuberculation or sediment in the
pipe.
The age of these pipes also creates a concern of
catastrophic structural failures, which warrants full
replacement as opposed to non-structural lining.
instead of splitting them open when a burst head
for cast iron pipe is used. Concrete encasement or
thrust blocks can also cause trouble as they are less
compressible than the soil and transmit the bursting
pressure toward other utilities.
We want to identify as many of these critical features
during design as possible so that they can be
open cut and the obstruction removed so that the
bursting and pull-in process can proceed through
this location. Any bursting obstacles encountered
during construction will require an additional open-
cut excavation to resolve. This will also influence
the planning of pulling and tail pit locations. Pulling
pits for 6-inch pipe up to a typical 5-foot bury depth
will need to be approximately 13 feet long and 4 feet
wide. Tail pits where the pipe is pulled into the host
pipe should be about 37 feet long in addition to a full
depth pit 13 feet long. The tail pit can be narrower
as it only needs to accommodate the pipe to provide
a gradual vertical curve to the host pipe bury depth.
Pulling and tail pits are the same size for either HDD
or pipebursting.
existing laterals and service lines.
Trenchless = Less Trenches
In spite of the name, trenchless rehabilitation does
not completely avoid all trenches, but it significantly
reduces excavation where there is not a reason
to remove and replace the street and soil cover.
Trenchless rehabilitation has many techniques,
and often several techniques are used on a single
project. Pipebursting and horizontal directional
drilling (HDD) are the trenchless techniques best
suited for this project. Pipebursting follows an
existing pipe cavity and must be used within certain
appropriate limits of pipe size and sufficient cover –
typically limited to 1 to 2 pipe sizes larger than the
host pipe.
HDD allows a pipe to be installed on a new
alignment and profile by creating a new hole in the
ground. HDD can be used for mainline or service
connections.
Trenchless rehabilitation also requires a continuous
new pipe – fusible PVC is recommended due to its
compact wall thickness and lack of time-dependent
students. The site constraints of a busy street in
otherwise good condition, adjacent high density
housing, and the social and environmental costs and
schedule constraints related to being located next to
the university make this an ideal project to consider
for trenchless rehabilitation as opposed to open cut
construction.
The original reason for two waterlines along Howes
Street is unknown. Based on research of the Fort
Collins Municipal Railway – the “Trolley” – it does not
appear that tracks ran down Howes Street. However,
an old depot shed is located on Howes Street just
south of Cherry Street, north of the project limits.
Based on our research, we do not expect historical
relics of the trolley system within the project limits
except at the crossing on Mountain Avenue.
Water, Wastewater, and Stormwater Facilities Capital Improvements
City of Fort Collins
Subconsultants: Sub to Stantech Consulting
Change orders: N/A
Reference:
Don Silar, Senior Associate
Stantec Consulting
2950 E Harmony Road, Suite 290
Fort Collins, CO 80528
970.482.5922
don.silar@stantec.com
Washington Avenue Phase 4 Final Design,
Loveland
Project involved alternative analysis and final design
for Phase 4 of Washington Avenue storm drainage
system. Services included hydrologic and hydraulic
analysis, storm drainage design, water line design
and replacement, preparation of construction
drawings and specifications, and coordination
with multiple City departments. Significant utility
crossings included fiber optics, sanitary sewer, and
sensitive aging water lines. Permits were obtained
from railroads for jacking and boring storm sewer
and water lines under three railroads.
Owner’s name: City of Loveland
Beginning price: $124,905
Ending price: $190,000
Subconsultants: Tom Ballestero (water quality
specialist from UNH-Stormwater Center), CTL
Thompson
Change orders: Added additional project area
assortment of technical professionals in the region
that can be used as subcontractors if additional staff
is needed to successfully complete a project.
Washburn Land Surveying (Survey)
Washburn Land Surveying
has a wide variety of
knowledge and experience
to provide you with most any
kind of surveying, mapping,
and measurement services to meet your needs.
Land surveying is the firm’s passion, and it shows
in the pride it takes in providing the highest level
of quality, unmatched client service and timely
delivery. Often land surveying is the first link in a
project’s chain, and they understand this. For a
project to meet its schedule, the surveying work
must be completed on or ahead of time. Washburn
Land Surveying is dedicated to completing work in a
timely manner so that a project can be successful.
King Surveyors (Survey)
King Surveyors provides superior
quality surveying services
emphasizing quality control through
all phases of land development and
construction with a high degree of
personal commitment to a diverse
clientele. Established in 1985, King Surveyors is
a diverse and professional consulting firm. The
company specializes in providing clientele with
construction, topographical, and land surveying
services.
subconsultants providing specialized technical
services.
Ayres Associates’ Fort Collins office is nationally
recognized in hydrologic and hydraulic analysis,
urban drainage design, floodplain and floodway
mapping, river engineering, and erosion and
sedimentation control. Our office is in south Fort
Collins with easy access to major roadways.
Our team has a history of working together that
pre-dates employment at our current firms. Andrea
and Chris initially worked together at Sear-Brown, a
former company in Fort Collins; their work included
the Locust Street project. Later they worked together
at the firm RTW where they completed the C&S
Pond, BNRR Embankment Stabilization, and Drake
Relief Sewer projects.
In addition to Andrea and Chris, Robin was at CTL
Thompson working as our geotechnical consultant,
and Larry was providing survey services at King
Surveyors. More recent additions to our team
include Andy Herb with Alpine Ecological, who has
become a great fit for APDS projects with the City.
Water, Wastewater, and Stormwater Facilities Capital Improvements
City of Fort Collins