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HomeMy WebLinkAbout72-95 RESOLUTIONRESOLUTION NO. 72_95 'A RESOLUTION APPROVING AN ENGINEERING CONTRACT WITH CH2M HILL FOR ENGINEERING SERVICES FOR PHASE I OF THE MASTER DRAINAGE 'STUDY AND PLAN, AND APPROVAL OF A BUDGET ADJUSTMENT. BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF FAYETTEVILLE, ARKANSAS: Section 1. That the Council hereby approves a engineering contract with CH2M Hill for engineering services for Phase 1 of the master drainage study and plan. A copy of the contract is attached hereto -marked Exhibit "A" and made a part hereof Section 2. The Council hereby approves a budget adjustment decreasing Bridge & Drainage Improvements, Acct No. 4470 947015817 00, Project No. 94006 in the amount of $50,000.00 to:increase Professional Services, Acct. No. 4470 9470 5314 00, Project No. 94006 in the amount'of $50,000.00. A copy of the budget adjustment is attached hereto and made a part hereof. '. j PASSED AND APPROVED this 16th day of May , 1995. APPROVED: ATTEST: By: • _40.0.6 cite/ Traci Paul, City Clerk ,tfel4: 4:• - -- d'?irrrr.. By: Fred Hanna, Mayor HILL EXHIBIT .A •� STANDARD AGREEMENT FOR PROFESSIONAL SER1/IOES CH2M HILL% Office Address 502 South Main. Fourth Floor. Tulsa. OK 74103 Project Name Fayetteville Master Drainage Plan -Phase t CH2M HILL Project No. CLIENT City of Fayetteville. Arkansas Address 113 Wort Mountain. Fayetteville. Arkansas 72701 CLIENT requests and authorizes CH2M HILL to perform the following services: SCOPE: Scoria of Services for Phase 1 of the Fayetteville Master Dralnapo Plan Is Included In Attachment A to this Agreement. Phase 1 consistsjf develoalna a Master Plan Strateav end System Inventory and Mannino for the City. Future chases may consist of developina master dralnaae clans for primary watershed basins within the City of Favetteville and will be authorized by separate aareements. PROVISIONS 1. Autltorizwtbn to Proceed Execution of this AGREEMENT by -CLIENT will be authorization for CH2M HILL to proceed with the work, unless otherwise provided for In uds AGREEMENT 2. Salary Caste CH2M HILL% Seery Costs, when the baits of compensation, ere the mount of wages or salaries paid CH2M HILL employees for work directly pedomed on the PROJECT plus s percentage tippled to et truth wags or salaries to cover ell payroll -related taxes, payments, %anhksns, and benefits. ft. Per Diom Rates CH2M HILL% Per Diem Rotes, when the basis of compensation, we those hourly or daily abs charged for work pMmnsd an the PROJECT by ICH2M HILL employees of the inched eb.aKotiarw. These rates re subject to annual calender year aljusbnals end Inolude til mtowances for salary, overheads, and fee, but do not Include allowances for Dint Expenses. 4. Diroot Expenses CH2M HILL% Direct Expenses are Mose necessary mete and charges Ino rmd for de PROJECT Including, but not rented to (1)the direct ousts of transportation, meets and lodging, risk euboontrwb end outside servtcee: special CLIENT approved PROJECT specTho Insurance. letters of credit, bonds, and squlpned and supplea: (2) CH2M HILL% current standard rata chops for treat use of CH2M HILL% veNdes, computing sys- tems, laboratory test and anstys* word proamskm, priding and servkea, and da% fold equipment: end (3) reproduction o 2M HILL% standard project urges for spacial health and misty requirements of OSHA end bboovosnloMb s services. 5. Cost Opinions Any cost opinions or PROJECT economic evaluations provided by CH2M HILL WA be on a basis of aperients end Judgment, but sires 0142M HILL has no oadrat over market conditions or bidding procedures, CH2M HILL cannot warrant Mot bids, ultimo% corstnwdon oast or PROJECT economics will net very hoc these opinions. Page 1 of 2 .,.. ten .aIMa7 Mr. S. Standard of Care The swdard of ore applicable m CH2M HILL% cannon oil be the degree of aka and diligence normally employed by professional engineers or oonsWhnte performing the same or staler miaow at the time CH2M HILL%seMose ere pafamed• CH2M HILL wit reperform any sates not meeting the standard tut additional compensation. 7. Termination The AGREEMENT may be taminead for convenience on 30 days' written ratios, or for rouse, If either poly IS subsWrtidy b perform though no fault of the other and 5 not commence correction of such tefpalamsnoe days of written notice and algently complete the unction thereafter. On termination, CH2M HILL will be paid for all authorind work ' performed up to the bnnlnaaon dab plus to mination expenses. such es. but not imitsd to. reassignment of psaawid subcontract termination costs, and related reseed cods. If no notloo rf nomination Is given, nietioshps end obfgstors created by Ma AGREEMENT wil be emanated upon oompStlon of ail applicable requirements of Wit AGREEMENT, accept as provided for under Article 10. 8. Payment to CH2M HILL COMPENSATION by CLIENT to CH2M HILL w0 be on the beets of e not b exceed fee of $76.982 es detailed in Atbohned based an sal ry cot plus 88 percent of salary cost for general and admkrislratta overhead plus direct expenses plus 15 mount profit• Monthly Invoices wNl bo Issued by CH2M HILL to al work performed under this AGREEMENT. Invokes we due and psyublo on rsolpt arlheSpetrelltedbpieweiesearalatesolissoodaeallaesOthe In the event of a deputed or contested bang, only tat portion so undisputed will be withheld from payment, and REV 7fg9 FORM 124 portion will lye paid. CLIENT ercise reasonableness in contesting any bill or portion thereof. o interest will accrue on arty , contested portion of the billing until mutually resolved. 9. Limitation of Liability CH2M HILL agrees to deferid, indemnify, andhold harrnless, the CLIENT from and against liability claimsan causes of action, including defense costs -that may arise, or may be alleged to arise, in connection with the sole negligence orwillful misconduct of omissions of CH2M ILL indirect connection with this project. No clause shall be constructed in any form or manner to waive that Tort Immunity as set, forth under Arkansas State Law. nM exceed siA&ggg. This Provision takes precedence over any conflicting Provision of this AGREEMENT or any document incorp- orated Into ft or referenced by it. . • 10. Severability and Survival If any of the provisions contained in this AGREEMENT are held illegal, invalid or unenforceable, the enforceability of the remaining provisions shall not be impaired thereby. Limitations of liability indemnities, and other express representations shall survive termination of this AGREEMENT for any cause. 11. Asbestos -of -14azardeas-Substaimes 12. Loan Monitoring Services When CH2M HILL is providing PROJECT review and/or construction monitoring services to lenders, CLIENT (Lender) will, to the maximum extent permitted by law, indemnify CH2M HILL from all claims, damages, losses, and expenses, including litigation costs and attorney's fees, arising out of or relating to CH2M HILL's involvement or presence on or near the PROJECT. • CH2M HILCiW responsible for the duties and responsibilities ; that belong to the borrower(s), developer(s), construction contractor(s), designer(s), testing laboratory(ies); full-time inspector(s), or other parties associated with the PROJECT not in the employ of or a subcontractor to CH2M HILL. 13: Interpretation The limitations of liability and . indemnities will apply whether CH2M HILL's liability arises under breach of contract or warranty; tort, including negligence; strict liability; statutory liability; or any other cause of action, except the limitations will not apply to willful misconduct or gross negligence for limitations of liability or sole negligence for indemnification. Said limitations shall apply to CH2M HILL's officers, affiliated corporations, employees, and subcontractors. The law of the State of Arkansas shall govern the validity of this AGREEMENT, its interpretation and performance, and any other claims related to it. 14. No Third Party Beneficiaries This AGREEMENT gives no rights or benefits to anyone other than CLIENT and CH2M HILL and has no third party beneficiaries. CH2M HILL services are defined solely by this AGREEMENT, and. not by any other contract or agreement that may be associated with the Project 15. Materials and Samples Any items, substances, materials, or samples removed from the PROJECT site for testing, analysis, or other evaluation will be returned to the PROJECT site within 60 days of PROJECT close-out unless agreed to otherwise. CLIENT recognizes and agrees that CH2M HILL is acting as a bailee and at no time assumes title to said items, substances, materials, or samples. 16. Assignments This is a bilateral personal services AGREEMENT. Neither party shall have the power to or will assign any of the duties or rights or any claim arising out of or related to this AGREEMENT, whether arising in tort, contract or otherwise, without the written consent of the other party. Any unauthorized assignment is void and unenforceable. These conditions and the entire AGREEMENT are binding on the heirs, successors, and assigns of the parties hereto. Services covered by this AGREEMENT will be performed in accordance with the Provisions stated on the back of this form and any attachments or schedules. This AGREEMENT supersedes all prior agreements and understandings and may only be changed by written amendment executed by both parties. ride'AAA Ynr Date 5/16 `95 Page2of2 TUU567.76/C067.DOC Accepted for CH2M HILL, IN By Trtle Date REV 7/93 FORM 124 Fayetteville Master Drainage Plan Scope of Services Task 1. Citywide Stormwater Master Plan Strategy and System Mapping A. Strategy Meeting A stormwater master plan strategy meeting workshop will be conducted where the goals and objectives of a Citywide program are defined. Basin studies will be priontized from high to low based on existing floodmg problems and potential problems likely to occur as a result of rapid basin development. A program implementation time line will be developed which will identify basin master planning efforts on an annual basis. A coordination meeting will then be held with the U.S. Army Corps of Engineers and the Federal Emergency Management Agency (FEMA) to discuss their upcoming work efforts related to the FEMA Floodplain Update. A coordinated effort will be outlined in order to maximize ,the two study efforts. Citywide Stormwater Master Plan Guidance CH2M HILL will prepare a Technical Memorandum (TM) that summarizes the conclusions and recommendations of the strategy meeting, and meeting with the U.S. Army Corps of Engineers and FEMA. This TM will serve as the guidance document for successfully completing a Citywide stormwater master planning program. C Mapping Workshop CH2M HILL will conduct a mapping workshop directed at identifying and recommendmg a map development methodology that will allow for the smooth translation of AutoCAD drawing files, ortho/digital photometric mapping, contours, and planimetrics to a GIS platform. A TM will be produced documenting conclusions and recommendations of the workshop. 1. The following topics will be discussed at the workshop: a. Existing City capabilities b. Future graphics/GIS needs TUL/P40/001.DOC 1 • TULP40/001.DOC 2. A TM will be produced by CH2M HILL that will summarize existing capabilities, future needs, and program costs (budgetary) required to satisfy future needs, and an implementation strategy. Map Development CH2M HILL will review storm sewer record drawings and as -built drawings provided by the City and map existing storm sewers 36 -inches and larger. The graphics platform used to generate storm sewer mapping will be AutoCAD (Release 12). Ortho/digital photographs developed by Aenal Data Service, under a separate contract with the City of Fayetteville, will be used as base mapping. 3. Review existing aerial photography. 4. Determine if additional photography and topography is required to cover ` the study area and contributing drainage areas. a. Advise City of need for additional photography and topography. Coordinate obtaining additional photography and topography with subconsultant or current City consultant. Determine if this effort is to be a part of this contract. 5. Base mapping will illustrate contours, channels, rivers, buildings, streets, and attributes associated the these planimetrics Overlays to the base map will include the following: a. Watershed boundaries Storm sewer system (dosed and open channel) 36 inches and larger. 6. The City will prioritize and authorize system mapping on a watershed by watershed basis as funding allows. Deliverables 1. Strategy TM 2. Mapping TM • 2 -•- 3. Mapping will be delivered on reproducible mylar and on disk. Task 2.1 Inventory Existing Structures and Systems Subbasin Delineation Define minimum size of subbasins to delineate and modeled. This will establish the upper tributary study limits Study limits will be defined by a storm sewer system's inability to convey the 100 -year flood in the curb/gutter (subject capacity limitations defined in the Drainage Criteria Manual) and storm sewer, requiring a closed or open system designed to convey the 100 -year flood. Develop basin and subbasin boundary mapping. B. Existing Structures and Systems Survey 1. The City will authorize existing structures and systems survey on a watershed -by -watershed basis as funding allows. 2. Define existing structures and systems to be surveyed and included m the model for the study, such as, structures 36 inch in diameter and larger located along the main stem and tnbutaries of the drainage basins and subbasins 3. Conduct field reconnaissance to determine extent of field survey requirements and develop channel condition factors. 4. Conduct field survey of existing structures to determine location, type, size, elevations, and general condition including structural condition. Photographs to be taken of all structures to be included in the model for office reference. 5. Locate known high water marks and determme elevations. 6. Determine finish floor elevations of known structures that flood. Benchmarks will be provided by the City. 7. While conducting field reconnaissance, the need for a structural evaluation of a structure(s) will be identified. The need will be based on the magnitude and nature of cracks, pitting, structural undermining, and observed failure of inventoried structures. This effort will not require entry into confined areas Structural evaluations will be performed by a structural engineer and will be considered as an additional service to this Scope of Work. NIJr40/001.Doc 3 _` • Severe areas of bank and bed erosion will be noted when conducting the field reconnaissance. 9. Identify projects requiring immediate attention, allowing some constriction of high priority projects to occur simultaneously to, but in conjunction with, the study. Existing System Workshop 1. Conduct workshop with City staffto discuss status of project and review maintenance problems identified that need immediate attention. 2. Provide an itemized list of maintenance problems with channels and/or structures observed during the field reconnaissance to the City to be addressed while the study is being completed, in addition to known problems D Deliverables 1. Drainage structure and stream system maps in draft format. 2. Structure inventory in tabular format notmg location, type, general condition, and maintenance problems observed. 3. TM describing work completed in this task. IT IS ANTICIPATED THAT ALL WORK DESCRIBED IN TASKS 3 THROUGH 8 WILL BE PERFORMED IN THE FUTURE AS FUNDS ALLOW AND AS AUTHORIZED BY THE CITY OF FAYETTEvmLE. Task 3. Hydrologic Analysis A Develop Existing and Future Basin Development Conditions 1. Utilizing City land use and zoning information, basin and subbasin development conditions will. be established and land use areas assigned within each subbasin. Runoff parameters will be established for each drainage area based on existing and future development conditions. TUL/P40/OO1 DOC 4 Review Existing Information Review existing information as follows: 1. City maintenance records of drainage structures and systems 2. Records of citizen complaints related to drainage issues 3. U.S. Army Corps of Engineers information 4. U.S. Geological Survey information 5. Federal Flood Insurance Administration information 6. Land use and zoning information 7. Stream gauge data 8. Regional regression equations 9. University of Arkansas information C Hydrologic Modeling TUUP40/OOI.DOC 1. U.S. Army Corps of Engineers HEC -1 Flood Hydrograph Package computer software will be used for hydrology modeling. 2. Hydrologic models will incorporate drainage parameters for each subbasin including: a. Basin slope b. Basin soil conditions c. Impervious areas d. Initial and constant losses e. Travel time 3. Runoff hydrographs will be developed for each subbasin. 4. Runoff hydrographs from each subbasin will be combined at hydrologic points and routed to the next downstream hydrologic point. 5. Hydrologic modeling will be performed for existing and fully developed urbanized conditions. 6. Flood routing in channels and impoundments. 7. High-water information will be used for model verification, in adition to additional field surveys. 8. Hydrologic modeling will be performed for the 10-, 25-, 50-, and 100 -year storm frequencies for both existing and future (fully urbanized) conditions. 5 D. Deliverables 1. Hydrologic models and analysis. 2. TM describing work performed in this task. Task 4. Hydraulic Analysis A. Hydraulic Model T[UJP40/00i.DOC 1. Hydraulic modeling will be performed utilizing U.S. Army Corps of Engineers HEC -2 Water Surface Profiles computer software. Hydraulic modeling will be performed for the 10-, 25-, 50-, and 100 -year storm frequencies. 3. Hydraulic modeling will be performed for existing and fiilly developed urbanized conditions. 4. Cross sections of the open channels will be taken from the aerial digitized topography for the hydraulic modeling where possible. 5. Supplementary field cross sections will be field surveyed where necessary such as culverts and channel sections where required. 6. Water surface elevations generated by the computer model will be compared to high-water information where available from pubhc records. Floodplain Mapping Develop floodplain maps indicating existing and future 100 -year floodplains based on the computer-generated flood elevations. Hydrologic and Hydraulic Modeling Workshop Conduct workshop with City staff to review project status and hydrologic and hydraulic modeling. 2. The workshop will be used as an opportunity to brainstorm possible solutions for -problem areas. Task 6, Alternative Analysis, will investigate the feasibility of implementmg two potential solutions. Deliverables 1. Hydraulic models and analysis. 6 a • • 2. TM describing the work completed in this task. 3. Floodplain maps reflecting 100 -year floodplams without improvements. Task 5. Alternative Analysis A. Drainage System Improvement Alternatives Consider two drainage system improvement alternatives (Task 4) to minimize damages to public and private property. 1. Determine drainage system improvement strategy for roadway structures: a. Major Highways—such as 100 -year b. Pnnclpal and 1\fmor Arterial—such as 50 -year c. Collector—such as 25 -year d. Residential—such as 10 -year 2. Determine drainage system improvement strategy related to the following issues: a. Stormwater detention b. Purchase of floodplain areas (property evaluations are not included in this Scope of Services) B. Conceptual Alternatives Determine conceptual potential alternatives for each problem area. 1. Document advantages and disadvantages of each potential alternative without the use of modeling based on basin constraints and general knowledge. 2. Present potential alternatives to City staff for discussion prior to modeling. Conceptual Alternative Workshop Conduct interactive workshop with City staff to discuss status of project and potential alternatives considered. Select alternative solutions that appear feasible for each problem area for modeling. TUUP40/001.DOC 7 D. Alternative Analysis Develop hydrologic and hydraulic models as appropriate for selected alternatives. 1. Incorporate selected altematives into models for all storm frequencies for existing and fully urbanized basin conditions. 2. Determine impact of selected alternatives on drainage system through quantitative analysis. 3. Refine alternatives if required to improve impact if possible. 4. Document impact of selected alternatives for existing and fully urbanized condition. Alternative Cost Opinion Prepare cost opinion of selected alternatives. Alternative Presentation Present output of analysis to City staff in workshop for review and discussion. Deliverables 1. Floodplain maps reflecting revised floodplains with improvements in draft format. 2. TM describing work completed in this task. Task 6. 'Develop Project List and Recommended Work Plan A. Identify and prioritize improvement projects. B Develop a project description for each project. Develop an opinion of constriction cost for each project. Compare projects with those identified in the 5 -year CIP. Develop priorities based on urgency of need. Develop maintenance life -cycle cost for each project. TUUP40/001.DOC 8 G. Recommended Plan Workshop. Conduct workshop with City staff to discuss status of project and review project list and recommended work plan. Deliverables 1. TM describing work completed in this task. 2. Project list and recommended work plan Task 7. Present Recommended Plan to City Public Meeting Assist City staff with presentation of recommended plan to citizens and City government. Task 8. Documentation A Prepare draft, final draft, and final report mcorporating work products produced as a part of this master drainage plan, including: 1. Hydrology 2. Hydraulics 3. Alternative analysis 4. Recommended plan 5. Floodplain maps m AutoCAD/GIS compatible overlay format Provide five copies of the draft and final draft report to the City. Conduct workshop with the City staff to review comments of the draft and final draft report. Revise the draft final report based on City review comments. E. Provide 50 copies of final revised report to the City. TULJP40ro01.Doc 9 • • • 0 0 N N 1 0 m A a 8 N 4, rn 00 df 6060 8 en (A 00 a r 0 0 b 00 b N 3. Hydrologic Analysis 4. Hydraulic Analysis 6. Recommended Plan 8. Documentation c F U DEN100170E5.WP5 • City of Fayetteville, Arkansas Budget Adjustment Form Budget Year 1995 Department: Division: Program: 1 Public Works Engineering ST Capital Improvements Date Requested May 16, 1995 Adjustment # Project or Item Requested: None. This budget adjustment is administrative only and will simply move funding between different account numbers on project which have more than one account number. The budget for the Master Drainage Study and Plan Project will remain the same. Project or Item Deleted: None. Justification of this Increase: Some project expenses have to be classified in particular accounts. Since most projects are budgeted in one account at the time of inception, it is hard to determine what accounts will be used. This budget adjustment will move funding to the other accounts utilized. Justification of this Decrease: None: Project Budgets remain Adjustment is Administrative budgets are adopted complete allocated to various account accounting purposes. the same. only. Project and are then numbers for Account Name Amount Increase Professional Services 50,000 1 Account Name Amount Account Number Project Number 4470 9470 5314 00 Decrease Bridge 6 Drainage Improvements 50,000 Account Number 94006 Project Number 4470 9470 5817 00 94006 Approval Signatures, Requested By Admin. Serytces 7r Mayor Budget Office Use Only Type: A 8 C D E Date of Approval Posted to General Ledger Entered in Category Log Budget Office Copy Eny110 . STAFF REVIEW,FORM • an✓thd / G�a�n /f'// order no. 1) S mi/9d MICROFILM e S 7? -9s meeting of N/A AGENDA REQUEST x CONTRACT REVIEW (change GRANT REVIEW For the Fayetteville City Council FROM: Jim Beavers,P.E. Name Engineering Division Public Works Department ACTION REQUIRED: Mayor's approval of amendment no. 1 to the contract with CH2MHILL for the Master Drainage Plan mapping. COST TO CITY: i Cost of this Request 4470-9470-5314.00 Account Number 9600 t 9400 0040 Project Number *** The net Please refer $200.500 Category/Project Budget $100,018 Funds Used To Date $100.482 Remaining Balance effect is zero. The scope of two to' attachments. Drainage Category/Project Name Program Name Sales Tax CIP subtasks are Fund changed. SU'GE B dge REVIEW: Coordinator; x Budgeted Item Budget Adjustment Attached Administrative Services Director CONTRACT/GRANT LEASE REVIEW: GRANTING AGENCY: 4-72i d -44:11-v Acco ntin. anager; Attorney Purchasing Officer; Date ADA Coordinator 5/7JSk Date 54-9(0 Date 'V n 1/I Ui1J✓✓ ernal Auditor Date s/6-9 Date STAFF RECOMMENDATION: Mayor'J.pproval of the vision Head (:/..)2 !6 Department Director Administrative / or proposed amendment Date S /7-tCo Date S -I1-% Director Date s D7 ate no. one with CH2MHILL. Cross Reference New Item: Yes Prev Ord/Res #: 72-95 Orig Contract Date: M.:1 -i 15 * • • Amendment No. 1 to the Agreement to Furnish Engineering Services to the City of Fayetteville, Arkansas for the Fayetteville Master Drainage Plan Phase 1 The CITY OF FAYEI IEVILLE, ARKANSAS, as CLIENT, and CH2M HILL, as ENGINEER, have entered into an AGREEMENT dated May 19, 1995, to furnish engineering services in connectionIwith Phase 1 of the Fayetteville Master Drainage Plan. The parties hereby agree that the following modifications will be added and modify the _ M - original AGREEMENT:...„ _ y_ 1. Revise the Engineer's Fee Estimate to reflect a cost increase in Task 1—City-wide Stormwater Master Plan Strategy and System Mapping by $20,000 resulting in a total task amount of Forty-one Thousand, Forty-five Dollars ($41,045). CH2M HILL will review storm sewer record drawings and as -built drawings provided by CLIENT and map existing storm sewers 18 -inches (36 -inches and larger in original contract) and larger. 2. Decrease Task 2—Inventory Existing Structures and Systems by $20,000 resulting in a total task amount of Thirty-eight Thousand, Three Hundred Forty-seven Dollars ($38,347). CH2M HILL's Scope of Services for Task 2 will be reduced as a result of system inventories performed by the US Army Corps of Engineers as part of their master planning efforts. Amendments to the Engineer's Fee Estimate are summarized in the following table. I Task Description Contract Amount Amendment No. 1 Changes in Fee Increase (+$) Decrease (-$) 1. City-wide Stormwater MP Strategy and Existing Storm Sewer Mapping $21,045 $41,045 + $20,000 2. Inventory Existing Structures and $58,347 $38,347 - $20,000 t --- =� = -- —.Systems _ ,tea:--- _ . , Total Contract Amount $79,392 $79,392 e;',$;` ; Change in Contract Amount $-0- IN WITNESS WHEREOF, the parties have executed this AGREEMENT in multiple copies on the respective dates hereinbelow reflected. Approve for i / l// Y"`/ Accepted for CH2M HILL By By ��,�� 4 Title 1 Mayor Date 67a9/94 nn11092641c468.doc 1 FAYETTEVILLE TME CITY OF FAYETTEVILLE, ARKANSAS DEPARTMENTAL CORRESPONDENCE To: Fred Hanna, Mayor Thru: Kevin Crosson, Public Works Director\ Charles Venable, Asst. PublicWorks Director Don Bunn, City Engineer From: Jim Beavers, Engineering Date: 15 May 1996 Re: Approval Request - Change order no. 1, Master Drainage Study and Plan Phase 1, Engineering services contract with CH2MHILL. The contract for Phase 1 of the Master Drainage Plan and Study was approved by the City Council on 16 May 1995 in the amount of $79,392.00. The scope of phase 1 includes: The mapping of: Watershed boundaries, Basin and sub -basin delineation, All storm sewers 36 inch in diameter and larger, culverts, bridges and stream system. Field surveys and reconnaissance as necessary to establish the hydraulic models. The proposed change order (amendment no. 1) will increase the mapping by including all storm drainage from 18 inches in diameter and above. The City has a relatively small amount of drainage 36 inches in diameter and above. The additional information will be useful in the overall study and to the City. The scope of the subtask to field inventory existing structures and systems can be reduced due to the changes in the overall Master Study Plan. The Corps of Engineers and FEMA have offered, and committed, to participate in the hydrologic and hyraulic studies for most of the existing conditions in the City. CH2MHILL will still be required to analyze some existing conditions and all of the future conditions for ultimate development and provide a plan of required improvements. The precise scopes for the Corps of Engineers and CH2MHILL have yet to be determined. The Corps will take two or three years for their work. CH2MHILL will use the Corps final models and revise for ultimate • development. This will take at least one additional year. Thus the overall Master Plan and recommendations will be delayed until 1999 or 2000. If you agree with the proposed amendment please sign the two enclosed forms and return one to Engineering. Thank you. enc: 1. Two copies of Amendment no.1 with original signatures. 2. .Copy of letter dated February 5, 1996 from CH2MHILL. 3. Copy of original contract. ' Engineers _NOM Planners Economists WINW Scientists January 31, 1996 109264.A1.b1 Mr. Jim Beavers P E Project Manager 113 West Mountain Fayetteville, Arkansas 72701 Dear Jim: FEB 5 - 19g5 • Subject. Fayetteville Stormwater Master Plan Storm Sewer System Mapping Submitted for your consideration are proposed fee modifications to Task 1 City Stormwater Master Plan Strategy and System Mapping of the Master Drainage Plan Project. We have reviewed the storm sewer record drawings and topographic maps provided by the City and have concluded that Task 1 fees are insufficient to complete the mapping effort. We have estimated that Task 1 fees will increase between $20,000 and $28,000, for a total task amount ranging between $41,000 and $49,000. As discussed at our meeting on Tuesday, January 23, 1996, CH2M HILL s mapping deliverable will include the following. • AutoCAD files of 18 -inch storm sewer and larger (generated from record drawings furnished by the City) • Line attributes will include size, pipe type, and slope • Manhole attributes will include measure down dimensions to invert flow lines CH2M HILL will complete Task 1 mapping efforts within 8 weeks after receiving authorization to proceed. This Rocky Mountain Region 100 Inverness Terrace East, Englewood, CO 80112-5304 • 303 777-0900 Mailing address; P.O. Box 241325, Denver, CO 80224-9325 Fox No. 303 779-6822 • I Mr. Jim Beavers Page 2 January 31,E 1996 109264.A101 We are not requesting a change in approved contract fee of $73, 090, but a reallocation of Task 1 and Task 2 moneys. Task 2. B. Existing Structure and Systems Survey - will be performed on a watershed -by watershed basis as funding allows. Please feel free to call me at (303) 771-0952 ext. 5599. if you have any questions. Sincerely, 1 CH2M HILL 6 - Bob Pruitt Project Manager DEN/DOCUMENT2 c: Jerry Farrar