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Home My WebLink About20100989.tiff (itMEMORANDUM ViDcs TO: Clerk to the Board DATE: May 6, 2010 COLORADO FROM: Wayne Howard, County Engineer, CIP SUBJECT: Consent Agenda Item Attached are two original signed Work Orders #10 with Terracon for asphalt testing for the Weld County overlay program not to exceed $19,789.00. This issue was discussed and approved at a Work Session on May 5, 2010. Please return one original Work Order#10 to Public Works. Reference: Doc #2007-1652 (original Agreement for Professional Services) M\FrancieVAgendaChairSignature.doc ,�st Off,A cl LL" Cel ; PIA) (hell)GCltGC) 2010-0989 WORK ORDER FORM PURSUANT TO AN AGREEMENT BETWEEN WELD COUNTY AND TERRACON DATED: April 14th, 2010 Work Order Number: Terracon - 10 Project Title: Asphalt testing for Weld County Public Works overlay program. Commencement Date: April 26`h, 2010 Completion Date: December 31st,2010 Limitations on compensation: Not to exceed $19,789.00 Project Description: See proposal dated April 5th, 2010 Professional agrees to perform the services The attached forms are hereby accepted and identified above and on the attached forms in incorporated herein, by this reference, and accordance with the terms and conditions Notice to Proceed is hereby given. contained herein and in the Professional Services Agreement between the parties. In the event of a conflict between or ambiguity in the Weld County terms of the Professional Services Agreement and this work order (including the attached By: S- forms) the Professional Services Agreement Project Manager shall control. Date: di PI-pia Professional By: / — Department Head Terracon Consulting Engineers Date: `/ /V-/6 • By: et _ Bou cA � Director o`Finance and Administration Title: C� /(Q AAu(3e r Date: MA 1 2 2010 Date: L� /YA //0 -- B Chairman, eld Coun ommissioners Date: MAY 1 2 2010 • BOARD OF COUNTY COMMISSIONERS REVIEW/WORK SESSION REQUEST RE: Terracon Work order#10 DEPARTMENT: WELD COUNTY PUBLIC WORKS DATE:4-14-2010 PERSON REQUESTING: Josh Holbrook,Weld County Public Works Brief description of the problem/issue: Work Order No. 10—Weld County-Public Works will be placing approximately 85,000 tons of asphalt for the 2010 Overlay Program. This Work Order is designed to cover the testing of aggregate material/asphalt content. Test samples will be taken at the asphalt plant prior to delivery to ensure that the asphalt meets our construction specifications. We have selected Terracon to perform these services under the On-Call Geotechnical Contract. Attached are Work Order #10 and the outlining scope of work proposed by Terracon. This work order will not exceed $19,789. What options exist for the Board? (Include consequences,impacts,costs,etc.of options) BOCC can either approve Work Order No. 10 or deny it. • Recommendation to the Board: I recommend approval of Work Order No. 10 for Terracon under the On-Call Geotechnical Contract. • Approve Schedule Recommendation Work Session Comments Douglas Rademacher, Chair Barbara Kirkmeyer, Pro-Tem Sean P. Conway _ --_ •_. - _ William F. Garcia David E. Long _ V Attachments 00110.cA—Eg�\ �cYW • e `CrDY \n(101`01 5 )?O\O a-J�,Fm pc: M:\-Active Projects\Engineering On-Call Services\Geotechnical On-Call\Terracon\WO 10-HMA overlay Testing 2010\Work Session Request doc lierracon April 5, 2010 Weld County Public Works 1111 H Street, P.O. Box 758 Greeley, Colorado 80632-0758 Attn: Mr. Josh Holbrook Re: Proposal for Construction Materials Engineering and Testing Services 2010 Weld County Hot Mix Asphalt Projects Various Locations Weld County,Colorado Weld County Project No.AN-6 Terracon Proposal No. P21100024 Terracon is pleased to submit this proposal to provide quality control testing, observation, and laboratory engineering services during new Hot Mix Asphalt(HMA) paving and overlay projects as scheduled by Weld County Public Works during the 2010 calendar year. If required in the project specifications, Terracon's Greeley and/or Fort Collins office,which is accredited by AASHTO/CCRL in bituminous mixtures, soils, aggregate and Portland cement concrete and meets ASTM E329 "Standard Specification for Agencies Engaged in the Testing and/or Inspection of Materials Used in Construction" criteria. R18 accreditation documentation is available upon request for your review or can be viewed by visiting their website at htto://amrtnet/Portal/DesktooDefault.aspx?tabindex=0&tabid=20 for current accreditation status. This proposal outlines our understanding of the scope of services to be performed by Terracon for this project, our proposed schedule, and provides an estimated fee for our services. A. PROJECT INFORMATION Terracon understands that the proposed schedule of paving consists of approximately 84,000 total tons on various separate jobsites located in the Weld County area. The construction and improvements are assumed to consist of both new paving and existing milling overlay projects depending on location and condition. Terracon understands that County personnel will be performing all sampling of material and will deliver HMA samples to Terracon's Greeley Office. Construction activities for Terracon services may include, but not necessarily limited to: Asphalt sampling and laboratory asphalt testing including extraction-gradation, L.A. Abrasion, Lottman, fractured face determination, maximum theoretical specific gravity (Rice), mix design bulk unit weight & Hveem stability verification, ignition method of asphalt binder content calibration, and other professional services. Terracon is familiar with the planned construction testing criteria based upon similar work in the area and look forward to providing these services on your project. This proposal is to provide materials testing and observation services during construction activities only when specifically requested and scheduled to do so by our client and/or authorized representative during construction on the project site. Additional testing/observation services not referenced are not Terracon Consultants, Inc. 1289 First Avenue Greeley,Colorado 80631 P 19701 351 0460 F 19701353 8639 terracon.com Geoteclinical ■ Environmental • Construction Materials • Facilities 2010 Weld County Asphalt Projects Construction Terracon Weld County,Colorado Proposal No.21100024 Page 2 included in the scope of this proposal. The proposed scopes of services and estimated costs for the construction materials testing services are included herein. B. SCOPE OF SERVICES Our scope is based on "take off'quantities provided to Terracon by a representative of Weld County(dated March 30, 2010) for the proposed scope of services. It is requested that the scope be reviewed by our client, design team and contractor for meeting the project intent and construction schedule anticipated. If • changes are necessary, it is requested that Terracon be notified so that appropriate changes can be implemented prior to and during the project duration. Terracon services will be provided only when specifically requested and scheduled to do so. The responsibility to call or schedule our services and direct Terracon will be by our client and/or designated authorized representative, herein referred to as "client". It is the client's responsibility to meet specified testing frequencies, and to review the Terracon estimated budget versus actual services performed with respect to the construction performed to-date. Since our personnel will not be at the site on a resident basis, it will be imperative that we be advised when to provide services on the project. Unless other arrangements are made,scheduling of personnel will be on an as available basis,which may require changes in personnel assigned to the project. The detailed scope of services envisioned to be performed is as follows: Hot-Mix Asphalt(HMA)Paving Testing: Field sampling is available upon request. The number of client requested laboratory tests are as follows: Ignition Method of Asphalt Binder Content Calibration(Colorado Procedure—Laboratory 5120) • It is anticipated that three (3) separate hot plant/suppliers with three (3) separate mixes will be utilized during paving operations and therefore calibration will be provided for the three (3) mix designs designated by Weld County Public Works. Each laboratory mix design calibration is estimated to include: Preparation of each aggregate by drying and manually prepare the test samples to the mix design blend proportions with the addition of liquid asphalt and then performing the ignition oven/aggregate gradation testing and to include review/coordination by the Department/Project Manager. Terracon understands that County personnel will be performing all sampling of material and will deliver two (2) of the samples to Terracon's Greeley Office. Additionally, Terracon understands that we will sample one (1) of the materials at the hot plant (2 hours/trip); • 2010 Weld County Asphalt Projects Construction lrerracon Weld County,Colorado Proposal No. 21100024 Page 3 HMA and Aggregate Laboratory Testing • Determination of Bitumen Content by Extraction, Gradation Analysis of Extracted Aggregate—45 to be delivered by client; • Maximum theoretical specific gravity for air voids(rice)—16 tests to be delivered by client; • Lottman (TSR)—4 tests to be delivered by client; • L.A.Abrasion—4 tests to be delivered by client; • Ignition method of asphalt binder content calibration— 3 tests (2 tests to be delivered by client and 1 test to be sampled by consultant); • Fractured face determination—4 tests to be delivered by client; and • Mix design bulk unit weight&Hveem stability verification—4 tests to be delivered by client. > Project Management/Coordination • Department/Project Manager—25 hours; Y Other/Additional Professional Services Anticipated • Based upon project contractor performance additional testing and/or consultation may be requested by Weld County and has been estimated to be included in the proposal for budgetary purposes. C. COMPENSATION The cost for our services including all field work, laboratory testing, engineering analyses and report preparation has been estimated on the basis of unit rates especially prepared for this project. For testing and observation services, our costs are based on the following rates as defined in the 2009 Weld County Department of Public Works On-Call Geotechnical Testing Services Cost Sheet: COMPENSATION SCHEDULE PERSONNEL/REPORTS Principal Engineer. $103/hour Department/Project Manager $88/hour Field Engineer/Geologist $73.50/hour Senior Field Technician $49.50/hour Field Technician $49.50/hour 2010 Weld County Asphalt Projects Construction lferracon Weld County,Colorado Proposal No. 21100024 Page 4 LABORATORY TESTING Determination of Bitumen content by Extraction, Gradation Analysis of Extraction $185 each Maximum Theoretical Specific Gravity(rice) $88 each Fractured Face Determination $46.50 each Lottman (TSR)Test $248 each L.A.Abrasion $124 each Mix Design Bulk Unit Weight& Hveem Stability Verification $258 each Ignition Method of Asphalt Binder Content Calibration (excluding sampling) $650 each As Required Sampling $200/trip Note: Items not addressed above will be invoiced per the negotiated, "2009 Weld County Public Works On- Call Geotechnical Testing Services Cost Sheet"(attached) The estimated cost for providing the above services on the project is as follows: > Project Description Estimated Cost: • HMA/Oven Calibration—Lab(3@$650 ea.) $1,950 • HMA/Oven Calibration—Sampling (1 trip@$200 ea.) $200 • Extraction Gradation(45@ $185 ea.) $8,325 • Rice Specific Gravity(16@$88 ea.) $1,408 • Lottman (4@$248 ea.) $992 • Fractured Face Determination (4@$46.50 ea.) $186 • L.A.Abrasion (4@$124 ea.) $496 • Mix Design Bulk Unit Weight&Hveem Stability Verification (4@$258 ea.) $1,032 • Project Management(25 hrs.@$88/hr.) $2,200 • Other Professional Services $3,000 • Total Estimated Cost $19,789 Additional services required beyond the scope outlined above will be invoiced based on the applicable unit rates as presented in the Compensation' Schedule above, 2009 Weld County Public Works On-Call Geotechnical Testing Services Cost Sheet; or, Professional Services Fee Schedule. Our estimated fees are based upon our understanding of the project based on the information provided. Additionally, the following assumptions were used in preparing our estimated fees: The time required for construction materials testing on the project will be directly related to the schedule and performance of the various contractors on the site. As a result, total fees for the construction materials 2010 Weld County Asphalt Projects Construction lferracon Weld County,Colorado Proposal No.21100024 Page 5 testing services will include only those services outlined in this section of the proposal. Additional services required for testing services beyond the on-site times outlined above will be invoiced based on the applicable unit rates as presented on the attached fee schedule(s). Our estimated fees are based upon our understanding of the project based on the information provided. Additionally,the following assumptions were used in preparing our estimated fees: • We have assumed that contractors on the site will work a single-shift,five-day week schedule; • All work performed before 7am, after 5 pm Monday through Friday and/or on Saturdays, Sundays and holidays will be billed at 1.5 times applicable hourly rates; • Should additional services be required beyond the scope of work outlined above, our standard unit rates will be applicable; • The contractor will schedule testing and inspection services with 24 hours notice and inspection services with 72 hours notice(7:00 a.m.to 5:00 p.m., Monday through Friday); • The contractor is responsible to perform the work in accordance with the plans and specifications, and our testing of the work does not relieve them of their responsibility to perform the work properly. • If a change or request of services is made with less than the above requested hours, Terracon will make every effort reasonable to accommodate,but cannot guarantee having personnel available; • Unit rates will be applicable for on-site duration's in excess of those outlined; and • Invoices for the project will be submitted on a monthly basis, with the dollar amount of services performed to-date versus the project estimated amount or authorized amount with an amount remaining; if applicable, it is the client's responsibility to monitor this amount with respect to the construction performed to-date and future services anticipated. We appreciate your consideration of Terracon for this work and look forward to working as your materials consultant on this and future projects. Please forward 'copies of your Weld County Work Order Authorization for Services to Terracon for signature and we will return one copy to Weld County if acceptable. Commencement of services by Terracon will be considered formal acceptance of this proposal. Please be aware that we will be unable to distribute field and laboratory reports until a signed contract is received. If you have any questions or need additional information, please contact us at your convenience. Sincerely, Terracon Consultants, Inc. Todd A.Turney Reviewed by: Mike L. Walker, CET Greeley Office Manager Manager of Construction Services Copies: Via e-mail and constitutes the original. A hard copy will not be mailed. Enclosure: 2009 Weld County Public Works, On-Call Geotechnical Testing Services Cost Sheet lierracon Weld County Department of Public Works 2009 On-Call Geotechnical Testing Services: Cost Sheet ITEM NO. DESCRIPTION Unit PRICE SOILS 101 Atterberg Limits; Classification, Liquid Limit, Plastic Limit, Plasticity Index Ea. Test 72.00 102 Hveem Stabilometer-"R"Value Ea. 310.00 103 Proctor-Standard Ea. 119.00 104 Proctor-Modified Ea. 129.00 105 Nuclear Field Density Test 3 or More Tests Per Trip Ea. Test 29.00 107 Sieve Analysis -(Plus#4 Material) Ea.Test 41.00 108 Sieve Analysis-(#4 to minus 200 Material) Ea. Test 46.00 CONCRETE 201 Standard Concrete Cylinders(Including sampling in Field, Slump, Unit Set of 4 227.00 Weight,Yield,Air Content, Temperature,Casting, Curing,Testing and Reporting) 202 Compression Test(Cap, Cure and Break FOB Lab) Ea.Test 14.50 ASPHALT 301 Sieve Analysis-(Plus#4 Material) Ea. Test 46.00 302 Sieve Analysis-(Minus#4 Material) Ea. Test 51.00 303 Specific Gravity and Absorption(Plus#4 Material) Ea. Test 67.00 304 Specific Gravity and Absorption(Minus#4 Material) Ea.Test 67.00 305 L.A.Abrasion Test Ea.Test 124.00 306 Fractured Face Determination Ea.Test 46.50 307 Flat and Elongated Particles Ea.Test 46.50 • 308 Maximum Theoretical Specific Gravity for Air Voids (Rice) Ea.Test 88.00 309 Lottman (TSR)Test Ea.Test 248.00 310 Mix Design Bulk Unit Weight and Hveem Stability Verification Ea.Test 258.00 311 Determination of Bitumen Content by Extraction, Gradation Analysis of Ea. Sample 185.00 Extraction(To be sampled by Consultant) 312 Determination of Bitumen Content by Extraction (To be sampled by Ea. Sample 124.00 Consultant) 313 Nuclear Field Density Tests(3 or More Tests per Trip) Ea.Test 27.00 314 Core Field Samples Per Hour 46.00 Per Inch 5.00 HOURLY RATES 401 Principal Engineer Per Hour 103.00 402 Geotechnical Engineer/Department Manager/Project Manager Per Hour 88.00 403 Senior Field Technician Per Hour 49.50 404 Field Technician Per Hour 46.50 405 Other: Field Engineer/Geologist Per Hour 73.50 Hello