HomeMy WebLinkAbout25-61 Mcgrane Water Engineering LLC BFL-VOGL-SINAR Alluvia Well Project Agreement 05-28-2025RESOLUTION NO. 25-61
A RESOLUTION OF THE BOARD OF TRUSTEES OF THE TOWN OF
FIRESTONE, COLORADO, APPROVING AN AGREEMENT BETWEEN
THE TOWN OF FIRESTONE AND MCGRANE WATER ENGINEERING
LLC PERTAINING TO THE TOWN OF FIRESTONE BFL-VOGL-STINAR
ALLUVIAL WELL PROJECT
WHEREAS, the Town of Firestone ("Town") is in need of professional engineering design
services, and more specifically, preparing an alluvial well feasibility study, related to the Town of
Firestone BFL-Vogl-Stinar Alluvial Well Project ("Project"); and
WHEREAS, Town Staff recommends that McGrane Water Engineering, LLC ("MWE") be
selected to provide the Project services as a sole provider because given their extensive expertise,
qualifications, experience and knowledge of evaluating and designing alluvial well systems together
with their past experience with the Town's FAST Alluvial Well Field and Mountain Shadows Park
Irrigation Well and general knowledge of the Town's water operations, it is in the best interest of
the Town to have MWE perform the needed alluvial well feasibility study for Phase I of the Project;
and
WHEREAS, Town Staff has negotiated with MWE an agreement to perform the services as
described in the Professional Services Agreement, attached hereto as Exhibit A; and
WHEREAS, the Board of Trustees finds that entering into a Professional Services
Agreement with MWE promotes the health, safety, welfare and convenience of the Town and its
citizens.
NOW, THEREFORE, BE IT RESOLVED BY THE BOARD OF TRUSTEES OF
THE TOWN OF FIRESTONE, COLORADO:
Section 1. The Professional Services Agreement between the Town of Firestone and
McGrane Water Engineering, LLC is hereby approved in substantially the same form as the copy
attached hereto as Exhibit A and made a part of this resolution. The Mayor is authorized to execute
and deliver the Agreement on behalf of the Town.
PASSED AND ADOPTED this 28th day of May, 2025.
ATTEST:
Mi ' anados Luna, CMC, Town Clerk
AP 0V TO
all Keith n, Town Attorney
EXHIBIT A
[MWE Professional Services Agreement]
AGREEMENT FOR PROFESSIONAL SERVICES
THIS AGREEMENT FOR PROFESSIONAL SERVICES (the "Agreement") is made and entered into
this day o₹ a 2025 (the "Effective Date"), by and between the TOWN OF FIRESTONE,
a Colorado municipal con with an address of 9950 Park Avenue, Firestone, Colorado 80504 (the
"Town"), and McGrane Water Engineering, LLC, an independent Contractor with a principal place of
business at 1669 Apple Valley Road, Lyons, Colorado 80540 ("Contractor ") (each a "Party" and collectively
the "Parties").
WHEREAS, the Town requires professional services and
WHEREAS, Contractor has held itself out to the Town as having the requisite expertise and
experience to perform the required professional services.
NOW, THEREFORE, for the consideration hereinafter set forth, the receipt and sufficiency of which
are hereby acknowledged, the Parties agree as follows:
1. SCOPE OF SERVICES
A. Contractor shall furnish all labor and materials required for the complete and prompt execution
and performance of all duties, obligations, and responsibilities which are described or reasonably
implied from the Scope o₹ Services set forth in Exhibit A, attached hereto and incorporated
herein by this reference and known as BFG Vogl•Stinar Well Site Phase I Study (W2025-
9564.01)
B. A change in the Scope of Services shall not be effective unless authorized as a modification to this
Agreement. If the Contractor proceeds without such written authorization, Contractor shall be deemed to
have waived any claim for additional compensation, including a claim based on the theory of unjust
enrichment, quantum merit or implied contract. Except as expressly provided herein, no agent, employee,
or representative of the Town is authorized to modify any term of this Agreement, either directly or implied
by a course of action.
11. TERM AND TERMINATION
A. This Agreement shall commence on the Effective Date and shall continue until Contractor
completes the Scope of Services to the satisfaction of the Town or until terminated as provided
herein.
B. Either Party may terminate this Agreement upon 30 days advance written notice. The Town shall
,pay the Contractor for all work previously authorized and completed prior to the date o₹
termination. If, however, Contractor has substantially or materially breached this Agreement, the
Town shall have any remedy or right of set-off available at law and equity.
111. COMPENSATION
In consideration for the completion of the Scope of Services by Contractor, the Town shall pay
Contractor an amount not to exceed $192000.00. This amount shall include all fees, costs and
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expenses incurred by Contractor, and no additional amounts shall be paid by the Town for such
fees, costs, and expenses. Contractor may submit periodic invoices, which shall be paid by the
Town within 30 days of receipt.
IV. PROFESSIONAL RESPONSIBILITY
A. Contractor hereby warrants that it is qualified to assume the responsibilities and render the
services described herein and has all requisite corporate authority and professional licenses in
good standing, required by law. The work performed by Contractor shall be in accordance with
generally accepted professional practices and the level of competency presently maintained by
other practicing professional firms in the same or similar type of work in the applicable
community. The work and services to be performed by Contractor hereunder shall be done in
compliance with applicable laws, ordinances, rules and regulations, including the preference for
Colorado Labor set forth in C.R.S. Article 17 Title 8.
B. The Town's review, approval or acceptance of, or payment for any services shall not be
construed to operate as a waiver of any rights under this Agreement or of any cause of action
arising out of the performance of this Agreement.
C. Because the Town has hired Contractor for its professional expertise, Contractor agrees not to employ
Sub -Contractor s to perform any work except as expressly set forth in the Scope of Services.
V. OWNERSHIP
A. Any materials, items, and work specified in the Scope of Services, and any and all related documentation
and materials provided or developed by Contractor shall be exclusively owned by the Town. Contractor
expressly acknowledges and agrees that all work performed under the Scope of Services constitutes a
"work made for hire." To the extent, if at all, that it does not constitute a "work made for hire," Contractor
hereby transfers, sells, and assigns to the Town all of its right, title, and Interest in such work. The Town
may, with respect to all or any portion of such work, use, publish, display, reproduce, distribute, destroy,
alter, retouch, modify, adapt, translate, or change such work without providing notice to or receiving
consent from Contractor.
B. If the Town reuses or makes any modification to Contractor's designs, documents or work product without
the prior written authorization of Contractor, the Town agrees, to the fullest extent permitted by law, to
release the Contractor, its officers, directors, employees and sub -Contractors from all claims and causes
of action arising from such uses, and shall to the extent permitted by law indemnify and hold them
harmless from all costs and expenses, including the cost of defense, related to claims and causes of
action to the extent such costs and expenses arise from the Town's modification or reuse of the
documents.
C. The Town expressly acknowledges and agrees that the documents and data to be provided by Contractor
under the Agreement may contain certain design details, features and concepts from the Contractor's
own practice detail library, which collectively may form portions of the design for the Project, but which
separately, are, and shall remain, the sole and exclusive property of Contractor. Nothing herein shall be
construed as a limitation on the Contractor's right to re -use such component design details, features and
concepts on other projects, in other contexts or for other clients.
VI. INDEPENDENTCONTRACTOR
Contractor is an independent Contractor. Notwithstanding any other provision of this Agreement,
all personnel assigned by Contractor to perform work under the terms of this Agreement shall
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be, and remain at all times, employees or agents of Contractor for all purposes. Contractor shall
make no representation that it is a Town employee for any purposes.
VII. INSURANCE
A. Contractor agrees to procure and maintain, at its own cost, a policy or policies of insurance
sufficient to insure against all liability, claims, demands, and other obligations assumed by
Contractor pursuant to this Agreement. At a minimum, the Contractor shall procure and maintain,
and shall cause any Sub -Contractor to procure and maintain, the insurance coverages listed
below, with forms and insurers acceptable to the Town.
1. Worker's Compensation insurance as required by law.
2. Commercial General Liability insurance with minimum combined single limits of
$1,000,000 each occurrence and $2,000,000 general aggregate. The policy shall be
applicable to all premises and operations and shall include coverage for bodily injury,
broad form property damage, personal injury (including coverage for contractual and
employee acts), blanket contractual, products, and completed operations. The policy
shall contain a severability of interests provision, and shall include the Town and the
Town's officers, and employees, Contractor as additional insureds. No additional insured
endorsement shall contain any exclusion for bodily injury or property damage arising
from completed operations.
3. Professional liability insurance with minimum limits of $1,000,000 each claim and
$2,000,000 general aggregate.
B. Such insurance shall be in addition to any other insurance requirements imposed by law. The coverages
afforded under the policies shall not be canceled, terminated or materially changed without at least 30
days prior written notice to the Town. In the case of any claims -made policy, the necessary retroactive
dates and extended reporting periods shall be procured to maintain such continuous coverage. Any
insurance carried by the Town, its officers, and its employees Contractor shall be excess and not
contributory insurance to that provided by Contractor. Contractor shall be solely responsible for any
deductible losses under any policy,
C. Contractor shall provide to the Town a certificate of insurance as evidence that the required policies are
in full force and effect. The certificate shall identify this Agreement.
VIII. INDEMNIFICATION
A. Contractor agrees to indemnify and hold harmless the Town and its officers, insurers, volunteers,
representative, agents, employees, heirs and assigns from and against all claims, liability, damages,
losses, expenses and demands, including attorney fees, on account of injury, loss, or damage,
including without limitation claims arising from bodily injury, personal injury, sickness, disease,
death, property loss or damage, or any other loss of any kind whatsoever, which arise out of or
are in any manner connected with this Agreement if such injury, loss, or damage is caused in
whole or in part by, the act, omission, error, professional error, mistake, negligence, recklessness
or other fault of Contractor , any Sub -Contractor of Contractor , or any officer, employee,
representative, or agent of Contractor, or which arise out of a worker's compensation claim of
any employee of Contractor or of any employee of any Sub -Contractor of Contractor . Contractor
's liability under this indemnification provision shall be to the fullest extent of, but shall not exceed,
that amount represented by the degree or percentage of negligence or fault attributable to
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Contractor, any Sub -Contractor of Contractor, or any officer, employee, representative, or agent of
Contractor or of any Sub -Contractor of Contractor.
B. If Contractor is providing architectural, engineering, surveying or other design services under this
Agreement, the extent of Contractor's obligation to indemnify and hold harmless the Town may be
determined only after Contractor's liability or fault has been determined by adjudication, alternative
dispute resolution or otherwise resolved by mutual Agreement between the Parties, as provided by
G.R.S. § 13-50.5-102(8)(c).
IX. CHANGE ORDERS
A. Change Order is a written instrument issued after execution of the Agreement signed by Town
and Contractor, stating their Agreement, as applicable, upon all of the ₹ollowing:
1. The scope of the change in the Work;
2. The amount of the adjustment to the Contract Price and
3. The extent of the adjustment to the Contract Times(s).
B. All changes in the Work authorized by the applicable Change Order shall be performed under
the applicable conditions of the Contract Documents. Town and Contractor shall negotiate in
good faith and as expeditiously as possible the appropriate adjustment of such changes.
X. MISCELLANEOUS
A. Governing Law and Venue. This Agreement shall be governed by the laws of the State of
Colorado, and any legal action concerning the provisions hereof shall be brought in Weld County,
Colorado.
B. No Waiver. Delays in enforcement or the waiver of any one or more defaults or breaches of this
Agreement by the Town shall not constitute a waiver of any of the other terms or obligations of
this Agreement.
C. Integration. This Agreement constitutes the entire Agreement between the Parties, superseding
all prior oral or written communications.
D. Third Parties. There are no intended third -party beneficiaries to this Agreement.
E. Notice. Any notice under this Agreement shall be in writing and shall be deemed sufficient when
personally presented or sent pre -paid, first-class United States Mail to the Party at the address
set forth on the first page of this Agreement.
F. Severability. If any provision of this Agreement is found by a court of competent jurisdiction to
be unlawful or unenforceable for any reason, the remaining provisions hereof shall remain in full
force and effect.
G. Modification. This Agreement may only be modified upon written Agreement of the Parties.
H. Assignment. Neither this Agreement nor any of the rights or obligations o₹ the Parties shall be
assigned by either Party without the written consent of the other.
1. Governmental Immunity, The Town and its officers, and employees, are relying on, and do not
waive or intend to waive by any provision of this Agreement, the monetary limitations or any
other rights, immunities or protections provided by the Colorado Governmental Immunity Act,
C.R.S. § 24-10-101, et seq., as amended, or otherwise available to the Town and its officers,
attorneys or employees.
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J. Rights and Remedies. The rights and remedies of the Town under this Agreement are in addition
to any other rights and remedies provided by law. The expiration of this Agreement shall in no
way limit the Town's legal or equitable remedies, or the period in which such remedies may be
asserted, for work negligently or defectively performed.
K. Subject to Annual Appropriation. Consistent with Article X, § 20 of the Colorado Constitution,
any financial obligation of the Town not performed during the current fiscal year is subject to
annual appropriation, shall extend only to monies currently appropriated, and shall not constitute
a mandatory charge, requirement, debt or liability beyond the current fiscal year.
L. Representative Authority. Each person signing this Agreement represents and warrants that he
or she is duly authorized and has the legal capacity to execute the Agreement.
IN WITNESS WHEREOF, the Parties have executed this Agreement as of the Effective Date.
SEAL 1Q'
ATTES C���••�d
i am una, Town Clerk
APPRO TO FORM:
Mars3aalt'keith Maown A orney
TOWN OF FIRESTONE, COLORADO
Don Conyac, Jr, Mayor
CONTRACTOR:
McGrane Water Engineering, LLC
i%9tta2Y Slpned 6y OentdsFkGrane„P.E.
Dennis McGrane Icn-D..Ts"—,PE.CP.C+4.
P.E., C.P.G. ar-M1icC—Mut Erg1—&,gtEC,
^'emEltennisi7tncpnnewster..am, o.US
Drtr. 3013.05.20 f f 97:3+-05'00'
By:
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EXHIBIT A
SCOPE OF SERVICES
(see attached 10 pages)
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M ' "a at '.r" Engineering, L;
April 17, 2025
Mr. David Lindsay, President
Colorado Civil Group Via email at illirrdsd rit. c'tine,c w ri
5 1 1 0 Granite St, Suite 200
Loveland, CO 801538
RE Town of Firestone - Water Supply valuation Vogl-Stinau` and Haicfoot Lakes Site
Mr. Linda
McGraraae Water Fn incering, LLC (IMWF) and Miller Groundwater Engineering, I IC, are
pleased to provide the Town of Firestone (Firestone) with this proposal to conduct exploration test
drilling at the Vogl-Stinar and Barefoot Lakes site (VS -BL). Colorado Civil Group (C(�Ci) is the
client representativ .
The main objeetise is to evaluate the feasibility of developing one or more horizontal arells (or large
diameter vertical wells) with one or more future pump stations. The water would be piped to the
FAST Water Treatment Plant located cast of Colorado Blvd and north of-C.R 28. The general plan
is to characterize the entire site, but with a focus on the west hail of the subject property as future
construction would likely occur in one or more phases as municipal demand increases, with the west
portion likely developedfirst.
dr
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The objective of the exploration program is to evaluate the physical capacity and water quality of the
alluvial aquiferto contribute to the Town's water supply. The site would expand production horn the
recently completed FAST welleld which consists of three scrtical wells`(` -wells) and one 2tl0µft long
horizontal sell (Fil-well').
Well yield is a function ofthe quifer's saturated thickness, permeability and available drawdown
(setting depth of well verses water lesel). Test drilling is necessary to evaluate the expected spatial
variability in those parameters, particularly in aquifer thickness. Projections of the site's sustainable well
yield are made stronger by characterizing the entire site and by aquifer testing. The challenge of
planning and conducting a site characterization program is to optimize spatial knowledge and
understanding of the aquifer while minimizing exploration and testing costs. This is why engineering
costs are usually greater than drilling costs for this type of evaluation project.
We envision the feasibility study to occur in three primary tasks:
Task I -- Hydrologic ssessment and Site Ds illin ,
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April 17, 202,)
Patga2 of 10
• Task 2 Evaluate aquifer properties and water quality coordination ith L.RL Water
• Task 3 - Evaluate wellffield configuration and yield options
Task I Hydrologic Assessment and Site Drilling
We will first conduct a preliminary hydrologic assessment to evaluate the aquifer water table, including
gradient, width, depth and saturated thickness, using data from existing sources. This includes gravel
exploration studies on the south side of Saint Vraiaa Creek (SVC) and geotechnical borings used to
design the slurry wall on the north side of SVC at Barefoot Lakes. Some of this data review and
preliminary mapping work has been completed to develop this drilling plan.
The drilling plan was des eloped based on a cursory review of the reports mentioned above that allowed
us to create preliminary bedrock elevation (aka "structure" map) contours shown in black on Figure I
(attached). Based on it, we sketched possible horizontal well alignments (solid orange lines) solid (or
potentially perforated) pipeline sections (dashed orange lines) that will allow gravity flow to potential
pump station sites (blue squares). The plan is to drill a few test holes, monitoring wells, and test wells to
evaluate numerous future well options. Potential horizontal well segments and vertical well options will
be evaluated under Task 3.
The current drill plan shown on Figure 1 includes:
• Continuous sampling using, a. -in C'M,P sampler. Approximately 40 samples will be sent to
geotechnical lab for standard sieve analyses and used to evaluate relative perrrmeahility;
• Two (2) 6 -in diameter test Pumping Wells (PW -highlighted in blue);
• Fight (8) temporary Test Holes (TIE) to bedrock that will be abandoned after drilling
(highlighted in red);
• Three temporary (3) Piezonneters (P) that will have PVC pipe installed to measure water levels
during testing (highlighted in yellow). These will be abandoned after the evaluation} and,
• Six (6) test holes completed as permanent Monitoring Wells (MW) that will be used for testing
and future monitoring (highlighted in green);
Lnder Task 1, we will:
• Obtain test hole permits from the Colorado Division of Water Resources;
• Prepare two contractor bid packages.The first will be for Task I - drilling, the second will be for
Task 2 aquifer testing.
• Send the bid documents to three select contractors: ,(Some contractors do not specialize in both
drilling and testing.)
• Orchestrate the work so that the testing occurs as soon as possible after drilling.
• Observe drilling, collect samples, prepare geologic logs, and send approximately 40 samples to
geotechnical lab to conduct gradation analyses to estimate relative permnn;eability.
• Install a shallow "sand point" on the north side of SVC, across from the west pumping Well
(PW), to evaluate whether test drawdown occurs on the far side of SVC.
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April 17, 20,3
Page 3 of 10
• Compile additional existing wsell data from vicinity wells using well data available from the
Colorado Division of ater resources; and
• Refine maps ofhydrologLe properties including., i) aquifer extent, ii) depth to bedrock, iii) the
bedrock structure neap shown in Figure 1; and iv) aquifer saturated thickness.
Task 2 —Evaluate Aquifer Properties and MonitoWater Quality
Under Task 2, ;e will observe two 4Shr pumping tests on the Pumping Wells (PWs) conducted by a
qualified pump contractor. The contractor will provide a test pump capable of producing 150 gpna using
a portable generator. The contractor will refuel the generator to sustain the tests. The initial test at each
site will be a short (4 to 6 hr) step test to evaluate well efficiency and determine an appropriate lonn �-
term test rate, followed by a 4S -hr constant rate pumping test. We will discharge the test water to
existing sloughs (within 300 ft) wwhich e expect does not require a CDPHL discharge permit as \ ould
be required if discharging to the river.
MWE will collect water level data from the pumping well and several piezometers and monitoring wells
during the tests. We have budgeted for 5 dataloggers for most MWs. plus one telemetry unit to monitor
test levels remotely in real time. The level data will be used to calibrate the groundwatermodel used in
Task 3.
'ateruality
Water quality is a concern for any municipal water supply. The primary water quality sampling and
evaluation work will be done by LRE Water who worked with the FAST Water °I'reatraaent Plant (WTP)
provider- to evaluate the qualityand treatment options for the FAST water supply, Under I ask 2, we
will also conduct a preliminary screening of the water types using basic liand-held-ureter Electric
Conductivity (EC) measurements. By taking EC measurements at the riverside pie/ometer while
pumping the west PW, we may detect shifts from groundwater to river water which may be informative
to evaluating longer ter al water quality tiends As part of ow r work, we propose renting an EC meter
and measuring the EC in the wells after- drilling and during testing.
We will share our E.C, data with LRE who we anticipate will be conducting a more complex water
quality monitoring andsampling plan and evaluation. We will also coordinate with LRE Water for their
sampling needs, but LRE will be responsible for choosing water quality analysis and evaluating the
results for the Town, They may sample multiple test wells and monitoring wells as part of their work.
LRF Water will be under a separate contract with the Town to conduct their work.
Task 3 - Evaluate wellfeld configuration and yield options
Under Task 3, we will build arid calibrate a MODFLOW model based on earlierwork and the test data.
We may create variable permeability zones based on sieve sampling results. We will prepare plots of
observed vs. modeled drawdowns for well tests and compare the resulting hydraulic conductivity and
transiraissivity distribution to the South Platte Decision Support System (SPDSS) model.
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Dave I aiudsai4
<=1jn it 17, 202Ri
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We will evaluate various well types (V-wells.H-wells, and large diameter vertical collection wells),
wcllield configutvations , and related construction phasing considerations. We will first model "steady
state" conditions to simulate a constant nater` table condition. We may also model transient sient conditions
if relevant, such as increases in river stage from spring runoff that may lead to higher aquifer levels
during summer peaking months. When choosing the scale of potential well configurations, we can
consider various baseflow and peak production scenarios provided by the Town similar to what did for
the FAT site. We can also provide river leakage estimates to L .L to assist them with estimating
groundwater/surface-water mixing scenarios for waterquality treatment consideration. Based on the
location and configuration of the proposed wllfreld options, we will provide draft water -rights model ing
runs that include the timing and location of stream depletions.
We anticipate evaluating numerous potential well configurations and will evaluate the cost -benefits of
designs with input from CCG. Only the most favorable well options with the nrost favorable cost -
benefits will be presented in a project letter report. The report will include Task I and 2 drilling and,
testing results as attached memoranda. The report can be used for water supply and water rights planning
and future construction.
Requests to To n
We request that the Town:
• Provide site access (mow drill sites and potential minor surface grading) and survey test well
locations and certain surface waterpoints (e.g., along the SVR and sloughs);
• Gain permission to access the north side of the river through the Barefoot Lakes property; and
• Provide baseline and peak demand scenarios for welll eld'tatgets-,
• Coordinate water quality work with LRF Water:
• Review our preliminary modeling and select prefer ed options to document in our final report;
and
• Conduct a site survey to obtain elevations of each test hole, the river and open water areas on the
site.
la Scope off: 'r
Task I - Drilling and Hydrologic Assessment
Under Task 1. we will conduct five subtasks discussed below.
Task 1.1 --Preliminary Hydrologic Assessment and .Plan Development
uhtasks include:
• Conduct several site meetings to go over access and drilling plan options (complete);
• Compile hydrologic data from known reports„
• Prepare preliminary maps of depth to bedrock, bedrock structure (aka bedrock elevation),
saturated thickness, and water table contours (partially complete);
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Dave I ,itadsas
April 17, i02.l
Page ,i of 10
0 Contact drillers.: to prepare a preliminary opinion of probable cost:::
• Prepare this written drilling and testing plan; and
• Compile hydrologic data from the Colorado Division of water resources (CDWR);
D€�l venal 1 1) Dnlhng plan, proposal, and opinion of probable cost for contractor work; 2) preliminary
hydrologic maps.
Task 1.2 — Prepare Contractor Bid Packages for Task 1 -Drilling and Task 2 - Testing
Suhtasks include:
• Obtain test hole drilling permit from the Colorado Division of WaterResources;
• Prepare two hid packages for contractors, one for drilling and the other for testing;
• Receive and evaluate bids, and recommend one or more contractors, and
• Facilitate contracting between the Town and contractors.
Deliverables: 1) Drilling plan, bid package, bid comparison and recommendation; 2) map of existing wells
within 600 feet. Assurnption.: 1) The drilling and testing Contractors will contract directly with the Town.
Task 1.3 -- Drilling Observation
Subtasks include„
• Observe drilling, development and testing;
• Sample collection and geologic logging;
• Electrical conductivitymonitoring after well development and while testing;
• Measure wells after development recovery.
Deliverables.- 1) Geologic logs and initial water level data. 4i.s'um Lions 1) The Town will provide access
to the drill sites; 2) Drilling Contractor will obtain locates for drilling.
Task 1A — Sieve Anabsis and Prepare EC map
Suhtasks include:
• Collect and deliver approximately 40 sieve samples to a geoteclmical lab for sieve analyses;
• Compile sieve data results and estimate hydraulic conductivity using llazen method;
• Prepare LC map of site wells.
Deliverables. 1) Sieve plots from geotechnical engineering lab; 2) Table of per meahilities based on
I Iaien method. As umptions: 1) MV .F has budgeted $3,825 for 5 data loggers and the telemetry unit and
$6,000 for 40 standard sieve analysis conducted by CMT Technical services (formerly Cesear Geotech.ni:cal)
who conducted the FAST site work.
Task 1.5 — Task I Memorandum
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April 17, 202,
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This is a preliminary memorandum based on existing hydrologic data and drilling data. It will not have
aquiferproperties which will be determined based on interpreting the test data using a groundwater model
in Task 3.
Delir:er•abler. 1) A less than 10 -page memorandum aa summarizing the drilling program that includes
appendices, drill logs, sieve results, and well completion reports submitted to the state. <t:s.sninyrr`ions.- 1)
The project report (Task 3) will include this memo as an appendix.
Task 2 — Aquifer Testing and Water Quality Coordination with LRE Water
f ndcr Task 2, we will conduct three suhtasks:
Task 21 — @urchase and install data loggers and teleretr" ,
Subtasks include:
Purchase and installing five data loggers and telemetry unit in pumping wells, monitoring wells,
and temporary piezometers
Deliw ahku: 1) the Town will own the 5 loggers and the telemetry unit. 4ssump/ioin:: 1) We budgeted
$3,82 for the data. logger purchase and telemetry unit, not counting monthly data charges.; 2) We
recommend that the Town continue the data acquisition and compilation on an annual basis through Miller;
Groundwater Engineering, similar to how we currently do it at the FAST site.
Task 22— Conduct Well Tests
Subtasks include:
• Test Observation: including being onsite during the step test and startup of the constant rate test,
and remotely monitor the remainder oi'the 48 -hr test.
9 Download the data in the middle, end, and 24 to 48 hours after the 4-httest is completed
I)ellvera,hles: 1) Well Ins el datathat will he used to calibrate the model in Task 3; As.sr.un ptrnns: 1) We
assume that the pump will stay on the entire test; however, we will accept the test as long as there are no
more than 3 shutdowns lasting a total ot'6 hours. Otherwise, the C'or tractor will be required to restart the
test:
Task 23— Water Quality Coordination with LRE
Subtasks include:
• Coordinate with LRE on their water quality sampling needs;
I. e/:serabl s.- l ) None. Assurrilati nv.- 1) We will coordinate test schedule with LRL and they will be
responsible for all sampling, analysis and interpretations.
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April 17, 202.;)
Page 7 of 10
Task 3- Evaluate Weilfield Configuration and Yield Options
Under Task 3 we will conduct four su tasks:
Task 3A ® Build and Calibrate a MOD LOW Model
Subtasks include:
1. Build a MUDFLOW model;
2. Detenanine model boundary conditions:
Calibrate the model based on the Task I hydrologic assessment and pumping test data
Deliver°uhles MODFLOW model of the VS -BL L site. Aiumptions 1) We will first niodel steady state
conditions to simulate a constant water table condition. We may then model transient conditions if
rcic ant.
Task 3.2 - Aquifer Characterization and Testing Memorandum
Subtasks include:
Prepare figures showing model calibration (pumping test plots including modeled is. observted
water table map, and resulting model hydraulic conductivity (K) and trarnsmissivity (K times the
thickness) maps compared to SPDSS model results.
Finalize the Taassk I Hydrologic Assessment memo based on the model results..
Delii,'er ahles 1) Finalize Task 1 - Hydrologic Assessment memo; 2) Prepare Task 2 —Aquifer
Characterization and Testing Memo,
Task 3. — Evaluate Weilfield Design Options
Subtasks irtcltide:
• Model alignments the same as or similar to shown in our Figure I drill plan above. This includes
base and peak bows on a seasonal basis,
• Based on feedback from CC °U, ise will further evaluate the cost -benefits of any preferred options
identified.
Based on feedback from (.(U. we will further evaluate depletion timing and locations of the
preferred options; and
0 Meet with the Town to discuss scenario options, results and recommendations
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L)eliverahler : 1) F,mailed results between team members that, describe the model scenario and modeling
results; 2) Comparison tables of various well types, alignments and base and peak production and cost per
project. Ascionpilon s. 1) Baseline and peak demands will be provided by the Town, 2) Horizontal well
construction costs will be based on FAST construction costs inflated to 2025 dollars:,
Task .3.4 —Prepare Project Summary Report with Recommendations
ubtasks include:
• prepare project surnnmaty letter report which will include the preferred scenario description, model
result, comparison tables and recommendations. It will include the Task I drilling and Task
hydrologic assessment memos as appendices.
0 Meet with the Town to discuss results and recommendations.:
L)eliver^clips'.° Draft and final summary report of all phases. 1s.sumptions: :1) modeling results should be
considered preliminary based on available data; 2) seasonal production and water quality may vary; and 3) the,
Town will review an initial draft and pros ide, comments within two weeks.
We estimate the engineeringcost to complete Task I is $78,000 and c32,flfla 'for a drilling contractor (totaling
Si 0,000). We estimate the engineering cost to complete Task 2 is $23,000 plus $44,000 for a pump test
coatractor (totaling $67,000), \k e estimate the cost for Task 3 engineering is $67,000, If we add a 1
percent contingency, the total project cost is $192,000 for engineering and, $87,000 for contractors
totaling $279,000. The table below summarizes our opinion of probable cost for the project for Town
planning purposes.
k Crane \ 'tier t$;rrniiac cring, LLC
l tw?e5 l..indsasi
April 17, 2025
Par( l.) of 1 r.
Payments for oui services,; like other professional services, are based on the actual time spent on your behalf
and at hourly rates offered for this specific project ( 200r`hr for .Dennis Mctarane and S 1"84/hr for Calvin
Miller). Billing occurs on, a monthly basis. Payment is expected within 30 days after billing. We
recommend contracting with LRF separately to conduct the water quality sampling and testing.
Perspective on Site Prospects and Costs: MWE and MGE both have specific expertise and experience
with detailed evaluation of the hydraulic connection between a shallow river like the SaintVrain and
pumping, wells installed immediately adjected to the rivet. From this experience, we know that an overly
simplistic analysis of the river's influence can overa-estimate the connection and well yield. That
experience has guided our drilling and testing plans for this site. However, despite this caveat, given tl rs
sin's location immediately along the rivet, we expect the sustainable basefloww₹ rate (i.e., without managea.
recharge) for a welliield at this location to be notably higher: than at the EAT site;
Ian;. TIMER QI.. E
We envision completing the project in 20 to 28 weeks (5 to 7 months) If we begin work in May, we
should finish up in the fall. Delays caused by circumstances beyond the controlof the engineer could
extend the time of completion.
We envision the Town will contract with McGrane WaterEngineering (M 'v'I) rising their Town's standard
contract. MWE will subcontract work to Miller Engineering and pass on the-] owrn's contractual teams and
conditions. Because we arc a small business, we request that the Town contract directly with the
Drilling Contractor. We will pass through laboratory and equipment rental costs with no additional charge.
We took forward to working the Town of Firestone and ('CO on this project.
Sincerely,
Mr GRAVE WATER ENGINEERING, LLC.
Dennis McGlrane, P.F., (....P.Ci
Principal Engineer and Hydrogeologist
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