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HomeMy WebLinkAbout25-59 Mcgrane Water Engineering LLC Alluvial Well no. 2 Project Agreement 05-28-2025RESOLUTION NO. 25-59 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 ALLUVIAL WELL NO.2 PROJECT WHEREAS, the Town of Firestone ("Town") is in need of professional engineering design services, and more specifically, alluvial well exploration, evaluation, and design services, related to the Town of Firestone Alluvial Well No. 2 Project ("Project"), which will be located between the St. Vrain Wastewater Treatment Plant and the St. Vrain River; 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 well exploration, evaluation, and design services for 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 funds 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. I ATT T; ,/ y Mi ' ranados Luna, CMC, Town Clerk APPR , AS TO FORM: G�dUN�`C �'rt,Q 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 , 7.' , day of _, 2025 (the "Effective Date"), by and between the TOWN OF FIRESTONE, a Colorado municipal corpor tian 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: I. 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 of Services set forth in Exhibit A, attached hereto and incorporated herein by this reference and known as Alluvial Well No 2 Exploration and Well Evaluation (W2021-9541.04) 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. II. 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. S. 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 of 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 $175,000.00. This amount shall include all fees, costs and Page 9 of 16 FIRESTONE 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. i 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 orwork 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 Page 2 of 16 FIRESTONE 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. Vil. 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. Vill. 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 Page 3 of 16 FIRESTONE 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 C.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 following: 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 o₹ 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 of the Parties shall be assigned by either Party without the written consent o₹ the other. I. 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. Page 4 of '16 FIRESTONE 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 Authori . 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. 1 ATTES m C r d'os Luna, Town Clerk A OV: A OFO Marshall Keith Martin, Town Attorney Don Conyac, :STpN ti. SEAL CONTRACTOR: McGrane Water Engineering, LLC Digisally signed by Dennis M Grano, P.E, Dennis McGranet.G. 2�DN: cn=Dennis M€crane, P.E., Lvc, a, P.E.,u=McGrane Water EnglneerFng, EEC, .E., C.P.G..., cnalhdennSs@mcgranewatrcam,S!5 By:X� Date: 202545]0 70433.060 Page 5of16 FIRESTONE EXHIBIT A SCOPE OF SERVICES (see attached 10 pages) Page 6of16 FIRESTONE McGiMcGrane.V ter Engineering,LC... ri�r4"9 ,A ' alk"6 R d, , 1 "%om,, t;r May 19,2025 Mr. David Lindsay, President Colorado Civil Group 5110 Granite St. Suite 200 Loveland, CO 80538 Via email at. dlirtd: rycc me core RE: Town of Firestone - W pater Supply Evaluation Sanitation District Site Mr. Lindsay'-. McGrane Water Engineering, LLC (MWE) and Miller Groundwater Engineering, LLC, are pleased to provide the "Town of Firestone (Firestone) with this proposal to conduct exploration test drilling at the Sanitation District site, Colorado Civil Group (°CCC) is the client representative. The main objective is to evaluate the feasibility of developing one or more horizontal wells (or large diameter vertical wells) with one or more future pump stations. The iiwater would be piped to the FAST Water Treatment. Plant located cast of Colorado Blvd and north of CR 28 This proposal supersedes all earlier proposals. Water quality is a concern at the site. The Town's water quality consultant is LRE Water. We request that the Town retain LRE Water to sample monitoring wells installed during Task 1 to determine whether to proceed with Task 2 —'Testing. lithe- .pater quality is deemed unacceptable, we believe it will save the 1"own approximate!) 57ft000 in eri inccring and contractorcosts. LEE may also want to conduct additional testing in Task 2 described below. , fixes The objective of the exploration program is to evaluate the physical capacity and water quality of the alluvial aquifer to contribute to the Town's water supply. The site would expand production from the recently completed FAST wcllf eld which consists of three vertical wells (°t'- wells) and one 2 O -ft long horizontal well (,-well), Well yield is a function of the aquifer's saturated thickness, permeability and available drawdown (setting depth of well verses water level). Test drilling is necessary to evaluate the expected spatial variability in those parameters, particularly in aquifer thicksn.ss. 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. Dave 1..,indsay Ma , 1), 202i Paste 2 of 1() We envision the feasibility study to occur in three primary tasks • Task 1— Hydrologic assessment, site drilling and preliminary waterquality screening; • Task 2 — Evaluate aquifer properties and water quality coordination with 1REWater • Task 3 Evaluate =cllfield configuration and yield options Task 1 s Hydrologic Assessment, Site Drilling and Preliminary Water Quality Screening 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 in the vicinity of Saint Vrain reek (SVC ) and prior drilling and testing results at the FAST site and V r•ra pit located west side of the property. Some of this data review and preliminary mapping work has been completed to develop this drilling plan. The current drilling plan is within a nearly 500 -foot wide easement measured from the center of SVC into the Sanitation District site. The ISO foot wide permanent casement is shown in Figure 1. Figure 1 - rest Hole and Monitoring Locations \lcw lrrrtic Vact Lrr,r;irac iii , I,I,C Dave Lindsay \las 19, 202.11 1l$4€ n`i of Ill The preliminary Horizontal well (H -well) alignment is located near the center of the alignment. A vault would be placed somewhere along the alignment to allow gravity thaw into the vault, The vault would contain pumps capable of producing estimated flow rates based on Task 2 - Testing. The current drill plan shown on Figure I includes: • Continuous sampling using a 3 -in (ME sampler. Approximately 32 samples will be sent to a geotechnical lab for standard sieve analyses and used to evaluate relative permeability; • Two (2) 6 -in diameter test Pumping Wells (PW) highlighted in blue; • Five (5) temporary Test Holes (£T`H) to bedrock that will be abandoned after drilling (highlighted in red), • Four temporary (3) Piezometrs (P`) that will have PVC pipe installed to measure water levels during testing (highlighted in yellow). These will be abandoned after the evaluation in the fall; and • Six (6) test holes completed as permanent Monitoring Wells (MW) that wilt be used for testing and future monitoring (highlighted in green). If we are not allowed access to monitoring isell locations located on the north side of the riv=er, we request that the Town ask permission from the land owner to install a temporary, shallow "sand points" instead of a monitoring well. A sand point has a short section of well screen that is pounded or hand -dug and buried only a fen feet below the water table. This would still allow us to monitor whether drawdonra from the Pumping Wells (PW) located on the Sanitation District's property propagates across SVC This is extremely important to evaluate stream leakance factors when calibrating the groundwater model in Task 2, Under Task I, we will.. • Obtain test hole permits from the Colorado Division of Water Resources, • Prepare two contractor bid packages. ihe first will be for Task l - drilling, the second will be for Task 2 w. aquifer testing. • Send the bid documents to three select contractors. (Some contractors do not specialize in both drilling (Task I) and testing (Task 2 • Orchestrate the work so that the testing occurs as soon as possible after drilling. • Observe drilling, collect samples, prepare geologic logs, and send approximately 32 samples to a geotechnical lab to conduct gradation analyses to estimate relative permeability. • Compile additional existing well data from vicinity wells using well data available from the Colorado Division of water resources, • Install sand points on the north side of SVC ifpermission is not obtained to install a monitoring well and • Refine maps of hydrologic properties including: i) alluvial aquifer extent, ii) depth to bedrock; iii) the bedrock structural elevation; and iv) aquifer saturated thickness. Task 1m WaterQuality Screeniaa anew NN'acre r I..i ngii ccri , 1.1. ( I)asair. I,inds,n A1a:. l9, 20215 pag..c, 1 of lt:) 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 helped design the FAST Water Treatment Plant (WTP), Under Task 1, we will conduct a preliminary screening of the water dissolved solids concentrations using, a purchased Electric Conductivity (EC) analyzer. Preliminary measurements will be made during well development of the monitoring wells until measurements stabilize. We will share our pC data with. LR.F who under a separate contract with the Town will likely conduct a more complex water quality monitoring and sampling plan during Task I and 2. We anticipate the LRh sampling and testing will take approximately a it days to obtain laboratory results back:. If the water quality is treatable using the existing FAST treatment plant, we will proceed with Task 2. Task 2 —: valua e Aquifer Properties and Monitor Water Quality Under Task 2, we will obser\ e two 4 -hr pumping tests on the Pumping, Wells (PWs) conducted by a qualified pump contractor. The contractor will provide a test pump capable of producing approximately 150 gpm rising 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 long-term test rate, followed by a 48 -hr constant -rate pumping test, We will discharge the test water to the SVC which will require that the contractor obtain a CDPHE discharge permit which requires some basic water quality parametermonitoring and testing. M\\th will also collect water level data from the pumping \sell and several piezo€peters 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 groundwater model used in Task 3. Task 2 --' gter Quality m al sl.W Under Task 2, we will purchase and monitor Electric Conductivity (LC) at the pumping wells during the 4 -hr pumping tests. By taking EC measurements at the rit erside piezonzeter while pumping the west P\\, we may detect shifts from groundwater to river water which may be<informative to evaluate longer - term water quality trends. 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. We will not wait for LRE Water to ev=aluate the water quality as a prerequisite for completing Task 3 below. Task 3 - valuate-tvellfietd configuration and yield options tinder Task 3„ we will build and calibrate a MODFLOW model based on earlier work 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 transmissivity distribution to the South Platte Decision Support System (PI)S ) model. tc Uraa.Iac' Veaae €1.€agianer ring, I I (..` 16 X1! ApxygIc �lk;v~ tai — I.aaaSt x £�a a .ilea'§I. 1 c•l�^,i€c't ' i lDave 1 1n(15 1\ May 111,"2023 liege ,5 of 1 O We will evaluate various well types (V -wells, H -wells, and large diameter vertical collection sells), wellfield configurations, acid related construction phasing considerations. We v ill first model "steady state" conditions to simulate a constant water table condition. We may also model transient 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 „e can consider various baseflow and peak production scenarios p Aovided by the Town. similar to what did for the F ST site. We can also provide riser leakage estimates to 1 Rh to assist them with estimating groundwater/surface-water mixing scenarios for water quality treatment consideration. Based on the location and configuration of the proposed wellfield options, we will provide draft water -rights modeling runs that include the timing and location of stream depletions. We anticipate evaluating both the West and past segment configurations and a multiple large -diameter vertical well option. Only the most favorable well options with the most favorable cost -benefits will be presented in a project letter report. The report will include Task 1 and 2 drilling and testing results as attached memoranda. The report can he used for water supply and water rights planning and future construction Requests to Town We request that the l`own • Provide site access (mow drill sites and potential minor surface gradin ii • Gain permission to access the north side of the river; • Provide baseline and peak demand scenarios for wellfield targets; • Coordinate water quality work ssith LRE Water- • Review our preliminary modeling and select preferred options to document in ow final report; and • Conduct a site survey to obtain elevations of each test hole and SVC across the site. 11 Scope of o , Task 1 - Drilling and Hydrologic Assessment Under Task 1, we will conduct five suhtasks discussed beloss Task 1.1 — Preliminary Hydrologic Assessment and Plan Development` Subtasks include: • Conduct several site meetings to go ovcr access and drilling plan options (complete); • Compile hydrologic data from known reports, • Prepare preliminary neaps of depth to bedrock, bedrock structure (aka bedrock elevation); saturated thickness, and water table contours (partially complete); • Contact drillers to prepare a prelmimnary opinion of probable cost, • Prepare this written drilling and testing plan; and lc ( i a 'liter I itgilic Crirtg, I *L l)ac I ,indlsa, May 1 9, 2()2,r Pa e ti o f l() • Compile hydrologic data from the Colorado Division of water resources (CD+R). Pc/ii erral'leI) Drilling plan, proposal, and opinion of probable cost for contractor work, 2) preliminary hydrologic maps. Task 1.2 — Prepare Contractor Bid Packages for Task 1 -Thrilling and Task 2 - ` 'estin. Subtasks include: • Obtain test hole drilling permit from the Colorado Division of Water Resources; • Prepare two bid 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. De/ir=erahle .' l)Drilling bid package, bid comparison and recommendation; 2) map of existing nells n ithin 600 feet, , ,wuniptions. 1 The drilling and testing Contractors ww=ill contract directly with the Town. Task 13— Drilling Observation Subtasks include: • Observe drilling, development and testing; • Sample collection and geologic logging; • Electrical conductivity monitoring after well development • Measure wells after development recovery. Dc/if crab/es: 1) Geologic logs and initial water level data, f ss°uni bons I) The i own will provide access to the drill sites; 2) Drilling Contractor will obtain locates for drilling. Task 1.4 —'Sieve Analysis and Preliminary Water (,ualit° Screening Subtasks include. • Collect and deliver approximately 32 sieve samples to a geotechnical lab for sieve analyses; • Compile sieve data results and estimate hydraulic conductivity using Hazen method; • Prepare LiC map of site wells;and • Coordinate with. LRL concerning monitoring well and temporary preiometer sampling and testing. Ddliver•able : 1) Sieve plots from geotechnical engineering lab; 2) `Table of pei eabilities based on t -lawn method 4.sunipt ons: l) Cost for 32 standard sieve analysis is $3 6O0; conducted by CMT Technical services (formerl) C`esear, Geotechnical)₹ 2) purchase a IC tool for S2,000 that can be used on other sites; and 3) It will take approximately 4 weeks fhr LRE to receive samples back before proceeding with Task 2. Task ES -"Cask 1 Memorandum 1 C un \\ inter in ua i i , I C I)ars,c I �inds:ty \lass 19, 2112.1 Pa£ 7 of It) This is a preliminary memorandum based on hydrologic data and drilling and water quality data obtained during Task l . It will not have aquifer properties which will be determined based on interpreting the test data usina groundwater model in I ask I. Dcliver'able5°: I) A less than 10 -page memorandum summarizing the drilling program that includes appendices, drill logs, sieve results, and well completion reports submitted to the state. sw npt ns: 1) The project report tTask 3) will include this memo as an appendix. Task 2 — Aquifer Testing and Water Quality Coordination with LRE Water We will proceed with Task 2 if the preliminary water quality assessment by IRE Water is determined acceptable. F rider Task 2, we will conduct three suhtasks: Task 2.1 Purchase and install data loggers and telemetry Subtasks include: • Purchase; and install four data loggers and telemetry unit in selected pumping wells, monitoring wells, or temporary piexomctcrs Dclivercrlrles: 1) the Town will own the 4 loggers and the telemetry unit. Asysuarrpption.s: I) We budgeted $4,025 for the 5 data loggers 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 2.2 — Conduct Well Tests Suhtasks include: • Test Observation: including being onsite during the step test and startup of the constant rate test, and remotely monitor the remainder of the 4 -hr test. • Download the data in the middle, end, and 24 to 48 hours after the 48 hi' test is completed • Monitor EC during testing, and, • (oordinate with. LRL Water for water quality sampling during testing. Deliverables: 1) well level data' that will he used to calibrate the model in Task 3, Assuniptioa.s; 1) We assume that the pump wilt stay on the entire test; however, we will accept the test as long as there are no more than 3 shutdowns lasting a total of di hours. Otherwise, the Contractor will be required to restart the test, Task 2.3— Water Quality Coordination with LRE c r° tii VI IIe:r ; rr ,ilrcxr I irr , 1., .,t' Ita(. t rSrs221�.° `<Gttc�°1t,2., 1. )ua�, 0.a a80' -ash . L "�la t�•;' � Dave Finds , laIil, 202. Pray e l of1 0 Subtasks include • Coordinate with LRE on their water quality sampling needs. Deltrerrahies.- I) None. .4.s.curraptwm. 1) We will coordinate test schedule with LRE and they will be responsible for all sampling, analysis and interpretations. Task 3— Evaluate Wllfield Configuration and Yield Options Under Task 3, eve will conduct four- subtasks Task 3.1- Build and Calibrate a i IODFLO%% Model Subtasks include: 1. Build a MODF1 O\T model; 2. Determine model boundary conditions, and 3. Calibrate the model based on the Task I hydrologic assessment and pumping test data. De iirer•nhlcs: MGDl'l OW model of the Sanitation District site. Assuamptiom.- 1) We will first model steady state conditions to simulate a constant water table condition. We may then model transient conditions if: relevant. l"ask 3.2 — Aquifer Character i ation and Testing Memorandum Subtasks include: • Prepare figures showing niodel calibration (pumping test plots including;modeled s. obser ed, seater table map, and resulting model hydraulic conductivity (K) and trarrsmissivity (K times the thickness) maps compared to SPDSS model results. • Finalize the Task I - Hydrologic Assessment memo based on the model results. Driftcrab/es. 1) Finalize Task 1 Hydrologic Assessment memo; 2) Prepare Task 2 Aquifer Characterization and Testing Memo. Task 3.3 - Evaluate % 'elllield Design Options Subtasks include: • Model alignments the same as or similar to shown in out Figure I drill plan above. This includes base and peak. Flows on a seasonal basis; • Based on feedback from. C.CG. we will further evaluate the cost- benefits of any preferred options identified. • Based on feedback from CCG we will further evaluate depletion timing and locations of the preferred options; and 1(r . t rr.rar.° `rater aginc eying, LL.C.= Dave I,indsav May 19, 205 Pats 9 of 10 0 Meet with the Town to discuss scenario options, results and recommendations Dehierables.- 1) Pnaailed 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. Assirmption.s': l I Baseline and peak demands will be provided by the To n; 2) Horizontal well construction costs will be based on FAST construction costs inflated to 2025 dollars. Task 3,4 -Prepare Project Summary Report sith Recommendations Subtasks include: • Prepare protect summary ' letter report which will include the preferred scenario description, model result, comparison tables and recommendations. It will include the Task l drilling and Task 2 hydrologic assessment memos as appendices. • Meet with the Town to discuss results and reco rimendations. Deliverables: Draft and final summary report of all phases, . I cxstrwnplions I) modeling results should be considered preli nn .ry based on available data; 2) seasonal production and water duality may vary; and it the Town will rev=iew an initial draft and provide comments within two eeks. We estimate the enneenngcost to complete Task I is $58,000 and $29,000 for a drilling contractor (totaling $87,000). We estimate the engineering cost to complete Task 2 is $25,000 plus $44,000 for a pump test contractor (totaling $69,000). We estimate the cost for Task 3 engineering is $69,000 If we add a 15 percent contingency, the total project cost is $175,000 for engineering and $84,000 for contractors totaling $259,000. The table below summarizes our opinion of probable cost for the project for Town planning purposes. c u rair� "gets r- Fitgirrc cr ing, II .' 1 �:6 ..pple t`o HeN l et., ['vd) � qt r 80:101. 'cbI ilc: ff. I),nc. L.indsa May 19, 202,1 Page. 10 of 10 Payments for our services, like other professional services. arc based on the actual time spent at hourly rates of 00/hr for Dennis MCGrane and $184 hr for Calvin Miller. Billing occurs on a monthly basis. Payment is expected within 30 days after billing. The Town; will contract directly with LRL water for their water quality work. TIME,IRED ; We envision completing the project in 18 to 27 weeks ( to 6 months) with an additional 2 months waiting on water quality results bet veer 'Tasks I and 2. If we begin work in May, we should finish by November. Delays caused by circumstances beyond the control of the engineer could extend the time of completion. CON'I TT We envision the TI own will contract with McGrane pater Engineering (MWE) using their Town's standard contract. M'F will subcontract work to Miller Engineering and pass on the Town's contractual terms and conditions. Because we area 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 look forward to working the Town of Firestone and CCG on this project, Sincerely, MCGRANE w AT ER ENGINEERING, LLC. Dennis MeCrane, P.L., C,P.G, Principal Engineer and Ilydrogeolo ist; Mc -f t-iutc°Vsat r I 1 irso rirrt;, LI.. '