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HomeMy WebLinkAboutContract 52489-A1 IeD AMENDMENT NO. 1 TO AGREEMENT STANDARD AGREEMENT FOR TECHNICAL SERVICES o s�c Construction Materials Observation and Testing Services I MLK Drop-Off Station Building Addition STATE OF TEXAS CITY SECRETARY CONTRACT NO. aL4?9- I COUNTY OF TARRANT WHEREAS, The City of Fort Worth and Terracon Consultants, Inc. (Consultant) made and entered into City Secretary Contract No. 52489 (The Contract) which was administratively authorized, the 1st day of July, 2019, for construction materials observation and testing services; and WHEREAS, further amendment is necessary to reimburse the Consultant as part of the design services agreement for additional geotechnical services for recommendations in the re-design of free-standing retaining walls to mitigate its structural integrity due to the evidence of ground water seepage. NOW THEREFORE, City and Consultant, acting herein by and through their duly authorized representatives, enter into the following agreement which amends the Contract: 1. Article I - Scope of Services, Paragraph (3) shall be added to read as follows: (3) Provide additional Geotechnical Engineering services, which consists of field exploration, laboratory testing and engineering/project delivery, for recommendations in the re-design and detailing of free-standing retaining walls. The cost of this additional service is $4,321.50 plus $0.00 in reimbursable expenses. The scope of services is described more fully in Terracon Inc.'s Letter dated August 22, 2019, subject: "Proposal for Geotechnical Engineering Services, Martin Luther King Drop-Off Station Addition. 2. Article II - Compensation, first paragraph, is amended as follows: "Consultant shall be compensated in accordance with the Fee Schedule shown in Attachment "C". Payment shall be considered full compensation for all labor, materials, supplies, and equipment necessary to complete the services described in Attachment "C". However the total fee paid by the City shall not exceed a total of $21,667.50 unless the City and the Consultant mutually agree upon a fee amount for additional services and amend this Agreement accordingly." 3. All other provisions of this Contract which are not expressly amended herein shall remain in full force and effect. OFFICIA� PFrr1rP17-J CITY S ,,,,; FT. WORT CFW—Amendment No.1 to Std.Agreement for Technical Services Page 1 of 2 Existing MLK Drop-Off Station Bldg.Addition&Site Modifications—Terracon Consultants,Inc. September 2019 EXECUTED this the day of_ Z Z_'=hcer 2019, in Fort Worth, Tarrant County, Texas. Terracon Consultants Inc. APPROVED: By: By: Kyle rro Kevin Gunn Vice-Pre nt Interim Assistant City Manager APPROVAL RECOMMENDED: RECOR D: _ : oF By: �� By: ' �Vr_ CooRr. tDirector ar J. Kayser C�� Property Management Department Cit Secretary ' APPROVED AS TO FORM AND LEGALITY: M&C Not Required )�IXAS Contract Authorization By: epj�� hn B. tron Assistant C' Attorney CONTRACT COMPLIANCE MANAGER: By signing I acknowledge that I am the person responsible for the monitoring and administration of this contract, including ensuring all performance and reporting requirements. By: N�yl V Brian R. Glass,AIA Architectural Services Manager OFFICIAL RECORD CITY SECRETARY CFW—Amendment No.1 to Std.Agreement for Technical Services FT WORT 42 Existing MILK Drop-Off Station Bldg.Addition&Site Modifications—Terracon Consultants,Inc. Attachment "C" August 22, 2019 Irerracon City of Fort Worth TX 401 W 13th Street Fort Worth, Texas 76102 Attn: Mr. Alfonso Meza P. (817) 392 8274 E: alfonso.meza@fortworthtexas.gov Re: Proposal for Geotechnica[ Engineering Services MLK Drop Off Additions 5150 Martin Luther King Jr Fwy Fort Worth, Tarrant County, Texas Terracon Proposal No. P95195139 Dear Mr. Meza: We appreciate the opportunity to submit this proposal to City of Fort Worth TX (CoFW) to provide Geotechnica[ Engineering services for the above referenced project. The following are exhibits attached to this proposal. Exhibit A Project Understanding Exhibit B Scope of Services Exhibit C Compensation and Project Schedule Exhibit D Site Location and Nearby Geotechnical Data Exhibit E Anticipated Exploration Plan Our base fee to perform the Scope of Services described in this proposal is$4,321.50. See Exhibit C for more details of our fees and consideration of additional services. The work described in this proposal will be performed under the terms of the Standard Agreement for Geotechnica[ Engineering and Materials Testing Services between the City of Fort Worth and Terracon Consultants, Inc. dated July 13, 2017. This proposal may be accepted by issuing a CPN (City Project Number). Terracon Consultants, Inc. 2501 East Loop 820 North Fort Worth, Texas 76118 Registration No. F-3272 P [817] 268 8600 F [817] 268 8602 terracon.com/offices/fort-worth i Proposal for Geotechnical Engineering Services 1rerracon MLK Drop Off Additions■ Fort Worth,Tarrant County,Texas 401 W 13th Street■ Terracon Proposal No. P95195139 We appreciate the opportunity to provide this proposal and look forward to working with you on this project. If you have any questions or comments regarding this proposal or require additional services, please contact the undersigned. Sincerely, Terracon Consultants, Inc. ,44.1l 4;E;=Jk - A. Reza Savabi, P.E. 6G6reCgan, P.E. Senior Geotechnical Engineer Geotechnical Department Manager Responsive ■ Resourceful ■ Reliable Proposal for Geotechnical Engineering Services Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■Terracon Proposal No. P95195139 EXHIBIT A - PROJECT UNDERSTANDING Our Scope of Services is based on our understanding of the project as described by CoFW and the expected subsurface conditions as described below. We have not visited the project site to confirm the information provided. Aspects of the project, undefined or assumed, are highlighted as shown below. We request the design team verify all information prior to our initiation of field exploration activities. Site Location and Anticipated Conditions Item Description The project is located at 5150 Martin Luther King Jr Fwy in Fort Worth, Parcel Information Tarrant County, Texas. 32.6925°N, 97.2450°W(approximate) (See Exhibit D) Existing Improvements Existing municipal drop off station Current Ground Cover Concrete pavement, grass, and scattered trees Existing Topography Relatively flat (from NCTCOG) Site Access We expect the site, and all exploration locations, are accessible with our truck-mounted drilling equipment. Expected Subsurface Our experience near the vicinity of the proposed development indicates Conditions subsurface conditions consist of fat clays overlying limestone and shale bedrock. Planned Construction Item Description Project Description We understand that the project will consist of a new loading dock near the Goodwill Trailers. Unknown Building Construction Deep foundation will be considered Finished Floor ±2 feet of existing grade Elevation Maximum Loads Columns: 75 kips Grading/Slopes Final slope angles of as steep as 4HAV(Horizontal: Vertical) are expected. Below Grade Limited to loading dock walls Structures Responsive i Resourceful ,- Reliable EXHIBIT A-PROJECT UNDERSTANDING 1 of Proposal for Geotechnical Engineering Services Irerracon MILK Drop Off Additions Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 Item Description Free-Standing Retaining walls are expected to be constructed as part of site development. Retaining Walls Responsive Resourceful Reliable EXHIBIT A-PROJECT UNDERSTANDING 2 of 2 Proposal for Geotechnical Engineering Services Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 EXHIBIT B - SCOPE OF SERVICES Our proposed Scope of Services consists of field exploration, laboratory testing, and engineering/project delivery. These services are described in the following sections. Field Exploration Our field exploration work includes the drilling and sampling of exploratory soil borings. CoFW requested one boring near the proposed loading dock: The following boring schedule is planned based on the site plan provided: Number of Borings Planned Boring Depth (feet) Planned Location 1 10 feet penetration into bedrock or 25 Loading dock area feet max;whichever occurs first 1. Below ground surface. Boring Layout and Elevations: We will use handheld GPS equipment to locate borings with an estimated horizontal accuracy of +/-20 feet. Field measurements from existing site features may be utilized. If available, approximate elevations will be obtained by interpolation from a site specific, surveyed topographic map. Subsurface Exploration Procedures: The borings will be sampled using split spoon sampling devices and thin walled sampling devices. Sample intervals will be as necessary to collect the required data for design, but in no case greater than 5 feet on center. The load carrying capacity bedrock (if encountered) will be evaluated in the field using the Texas Department of Transportation's (TxDOT) Cone Penetration Test. The field exploration will also include observations for groundwater. This will occur during the exploration program while the borehole is being advanced. No provisions have been made to collect water level data other than the observations made during the advancement of the borings. Our exploration team will prepare field boring logs as part of standard drilling operations including sampling depths, penetration distances, and other relevant sampling information. Field logs include visual classifications of materials encountered during drilling, and our interpretation of subsurface conditions between samples. Final boring logs, prepared from field logs, represent the Geotechnical Engineer's interpretation, and include modifications based on observations and laboratory tests. Property Disturbance: We will backfill borings with auger cuttings upon completion. Pavements will be patched with ready mixed concrete, as appropriate. Our services do not include repair of Responsive Resourceful Reliable EXHIBIT B-SCOPE OF SERVICES 1 of 4 Proposal for Geotechnical Engineering Services Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 the site beyond backfilling our boreholes and patching existing pavements. Excess auger cuttings will be dispersed in the general vicinity of the borehole. Because backfill material often settles below the surface after a period, we recommend boreholes to be periodically checked and backfilled, if necessary. We can provide this service, or grout the boreholes for additional fees, at your request. Safety Terracon is not aware of environmental concerns at this project site that would create health or safety hazards associated with our exploration program; thus, our Scope considers standard OSHA Level D Personal Protection Equipment (PPE) appropriate. Our Scope of Services does not include environmental site assessment services, but identification of unusual or unnatural materials encountered while drilling will be noted on our logs and discussed in our report. Exploration efforts require borings (and possibly excavations) into the subsurface, therefore Terracon will comply with local regulations to request a utility location service Texas811. We will consult with the owner/client regarding potential utilities, or other unmarked underground hazards. Based upon the results of this consultation, we will consider the need for alternative subsurface exploration methods, as the safety of our field crew is a priority. Private utilities should be marked by the owner/client prior to commencement of field exploration. Terracon will not be responsible for damage to private utilities not disclosed to us. If the owner/client is unable to accurately locate private utilities, Terracon can assist the owner/client by coordinating or subcontracting with a private utility locating services. Fees associated with the additional services are included in our current Scope of Services. and will be forwarded to our client for approval prior to initiating. The detection of underground utilities is dependent upon the composition and construction of the utility line; some utilities are comprised of non-electrically conductive materials and may not be readily detected. The use of a private utility locate service would not relieve the owner of their responsibilities in identifying private underground utilities. Site Access: Terracon must be granted access to the site by the property owner. By acceptance of this proposal, without information to the contrary, we consider this as authorization to access the property for conducting field exploration in accordance with the Scope of Services. Laboratory Testing The project engineer will review field data and assign laboratory tests to understand the engineering properties of various soil and rock strata. Exact types and number of tests cannot be defined until completion of field work. The anticipated laboratory testing may include the following: ■ Water (Moisture) Content of Soil ■ Liquid Limit, Plastic Limit, and Plasticity Index of Soils ■ Unconfined Compressive Strength of Cohesive Soils Responsive � Resourceful Reliable EXHIBIT B-SCOPE OF SERVICES 2 of Proposal for Geotechnical Engineering Services Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 ■ Material Finer than 75-pm (No. 200) Sieve ■ Absorption Swell Tests Our laboratory testing program often includes examination of soil samples by an engineer. Based on the material's texture and plasticity, we will describe and classify soil samples in accordance with the Unified Soil Classification System (USCS). Engineering and Project Delivery Results of our field and laboratory programs will be evaluated by a professional engineer. The engineer will develop a geotechnical site characterization, perform the engineering calculations necessary to evaluate foundation alternatives, and develop appropriate geotechnical engineering design criteria for earth-related phases of the project. Your project will be delivered using our GeoReport®system. Upon initiation, we provide you and your design team the necessary link and password to access the website (if not previously registered). Each project includes a calendar to track the schedule, an interactive site map, a listing of team members, access to the project documents as they are uploaded to the site, and a collaboration portal. The typical delivery process includes the following: ■ Project Planning — Proposal information, schedule site visit, stake borings, and the anticipated exploration plan will be posted for review and verification ■ Site Characterization — Findings of the site exploration (Drilling summary and laboratory testing) ■ Geotechnical Engineering — Recommendations and geotechnical engineering report When utilized, our collaboration portal documents communication, eliminating the need for long email threads. This collaborative effort allows prompt evaluation and discussion of options related to the design and associated benefits and risks of each option. With the ability to inform all parties as the work progresses, decisions and consensus can be reached faster. In some cases, only minimal uploads and collaboration will be required, because options for design and construction are limited or unnecessary. This is typically the case for uncomplicated projects with no anomalies found at the site. When services are complete, we upload a printable version of our completed geotechnical engineering report, including the professional engineer's seal and signature, which documents our services. Previous submittals, collaboration and the report are maintained in our system. This allows future reference and integration into subsequent aspects of our services as the project goes through final design and construction. The geotechnical engineering report will provide the following: ■ Boring logs with field and laboratory data Responsive Resourceful Reliable EXHIBIT B-SCOPE OF SERVICES 3 of 4 Proposal for Geotechnical Engineering Services Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 ■ Stratification based on visual soil (and rock) classification ■ Groundwater levels observed during and after completion drilling ■ Site and Boring location plans ■ Subsurface exploration procedures ■ Description of subsurface conditions ■ Recommended foundation options and engineering design parameters ■ Seismic site classification ■ Subgrade preparation/earthwork recommendations ■ Lateral earth pressures for retaining walls and loading dock walls Additional Services In addition to the services noted above, the following are often associated with geotechnical engineering services. Fees for services noted above do not include the following: Perform Environmental Assessments: Our Scope for this project does not include, either specifically or by implication, an environmental assessment of the site intended to identify or quantify potential site contaminants. If the client/owner is concerned about the potential for such conditions, an environmental site assessment should be conducted. We can provide a proposal for an environmental assessment, if desired. Responsive Resourceful Reliable EXHIBIT B-SCOPE OF SERVICES 4 of 4 Proposal for Geotechnical Engineering Services Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 EXHIBIT C - COMPENSATION AND PROJECT SCHEDULE Compensation Based upon our understanding of the site,the project as summarized in Exhibit A, and our planned Scope of Services outlined in Exhibit B, our base fee is shown in the following table: Task Rate Quantity Fee Mobilization, per occurrence $300.00 1 $300.00 Transportation, per trip $38.50 2 $77.00 Drilling (continuous 0 to 10 feet), per foot $16.50 10 $165.00 Drilling (intermittent soil sampling, 5-ft intervals), per foot $14.50 15 $217.50 Project Manager, per hour $93.00 4 $372.00 Geotechnical Engineer, per hour $134.00 12 $1,608.00 Principal Engineer, per hour $154.00 4 $616.00 Soil visual classification, each $12.50 8 $100.00 Moisture Content, each $9.00 6 $54.00 Atterberg Limits(LL, PL, PI), each $55.00 2 $110.00 Free Swell Testing, each $90.00 1 $90.00 Unconfined Compressive Strength of Soils, each $37.00 1 $37.00 Exploration SUBTOTAL $3,746.50 Private Utility Locate Service Project manager, per hour $93.00 2 $186.00 Private utility locate company (includes 20% markup) $389.00 1 $389.00 Private Utility Locate SUBTOTAL $575.00 ESTIMATED TOTAL $4,321.50 Our Scope of Services does not include services associated with site clearing, wet ground conditions, tree or shrub clearing, or repair of/damage to existing landscape. If such services are desired by the owner/client, we should be notified so we can adjust our Scope of Services. Unless instructed otherwise, we will submit our invoice(s) to the address shown at the beginning of this proposal. If conditions are encountered that require Scope of Services revisions and/or result in higher fees, we will contact you for approval, prior to initiating services. A supplemental proposal stating the modified Scope of Services as well as its effect on our fee will be prepared. We will not proceed without your authorization. Responsive■ Resourceful ■ Reliable EXHIBIT C-COMPENSATION AND PROJECT SCHEDULE 1 of 2 Proposal for Geotechnical Engineering Services 1rerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 Project Schedule We developed a schedule to complete the Scope of Services based upon our existing availability and understanding of your project schedule. However, this does not account for delays in field exploration beyond our control, such as weather conditions, permit delays, or lack of permission to access the boring locations. In the event the schedule provided is inconsistent with your needs, please contact us so we may consider alternatives. GeoReport® Delivery Schedule (Business Days) 1,2 Site Visit/Stake Borings 7 to 10 days after notice to proceed Drilling About 15 days after notice to proceed Laboratory Testing 8 to 10 days after completion of drilling Geotechnical Engineering 10 to 14 days after completion of laboratory testing Upon receipt of your notice to proceed we will activate the schedule component of our GeoReport®website with specific,anticipated calendar days for the delivery points noted above as well as other pertinent events such as field exploration crews on-site, etc. 2. We will maintain a current calendar of activities within our GeoReport®website. In the event of a need to modify the schedule,the schedule will be updated to mmintain a current awareness of our plans for delivery. Responsive Resourceful Reliable EXHIBIT C-COMPENSATION AND PROJECT SCHEDULE 2 of 2 EXHIBIT D—SITE LOCATION Irerracon MLK Drop Off Additions ■ Fort Worth, Tarrant County, Texas August 22, 2019 ■ Terracon Proposal No. P95195139 a. a tl ; , . �• F ff ip ir- F qr 14 I - x — � a * } ! 4 Historical Terracon Project Lr DIACFi-;-0 IS FOR GENERAL LOCATION ONLY,AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES MAP PROVIDED BY MICROSOFT BING MAPS limplow. or u LM LM LU '� AKI A 16 if W 16 4f N I 0)Z co i J O 0) d U r LO ❑ Z rn W o a ui O 0 ❑ XCL o a w v a W LL O 0 H ■ 0 Q vn M a o 0 Z Q rn w Q z tt-- O w t 0 N w a N O N m N w Q a