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Home My WebLink AboutC2018-187 - 4/18/2018 - NA • TASK ORDER NO. 5 This Task Order pertains to a Master Services Agreement for Geotechnical and Construction Materials Testing by and between City of Corpus Christi, Texas (City) and Tolunav-Wong Engineers, Inc., (Lab) dated January 16, 2018 by Motion No. M2018-005 (Agreement). Lab shall perform services on the project described below as provided in this Task Order and in the Agreement. This Task Order shall not be binding until it has been properly signed by both parties. Upon execution, this Task Order shall supplement the Agreement as it pertains to the project described below. MSA PROJECT NUMBER/NAME: 17101A Geotechnical and Construction Materials Testing TASK ORDER PROJECT NUMBER/NAME: 17101F Geotechnical and Construction Materials Testing 1. PROJECT DESCRIPTION: E10200 - La Volla Creek Drainage Channel Excavation 2. SCOPE OF SERVICES— Geotechnical and construction materials testing services for the La Volla Creek Drainage project more fully described in Exhibit A. 3. COMPENSATION —The total amount not to exceed for this Task Order only is $30,805.00 This Task Order is approved, and Lab may proceed. All other terms and conditions of the Agreement remain in full force and effect. CITY OF CORPUS CHRIS TOLUNAY-WONG ENGINEERS, INC. V ( , / D— R-- fua 4# is . LS Jeff H. •i monds, P.E. Da • Don R. Rokohl, P. E. Date Director of Engineering Services Branch Manager 826 South Padre Island Drive Corpus Christi, TX 78416 (361) 884-5050 Office drokohl@tweinc.com Fund Name Accounting Unit Account No. Activity No. Amount Storm Water 2015 4530-043 550920 E10200-01-4530-EXP $30,805 2018-187 4/18/18 Tolunay-Wong Engineers Inc. INDEXED TASK ORDER FUNDING REQUEST FORM CONTRACT MSA# AND TITLE: 17101.A Geotechnical and Construction Materials Testing(TWE) TASK ORDER PROJECT# /TITLE: 17101F Geotechnical and Construction Materials Testing(TWE) REQUESTING DEPARTMENT: Utilities FUND NAME/FUND #- ME: ACCOUNT: ACTIVITY: 4530-043 550920 El 0200014530EXP CONSULTANT:TOLUNAY-W ONG ENGINEERING, INC. TASK ORDER #: 5 SCOPE OF WORK: SEE PROPOSAL TASK ORDER IS FOR PROJECT(S)LISTED BELOW: PROJECT # FEE PROJECT NAME El O2OO 530,80.E La Voila Creek Drainage Channel Excavation S30,805 Grand Total SARAH WEST PM PRINT NAME: fala \ (X1) SIGNATURE: 4/9/2018 DATE: EXHIBIT A Paap 1 of 7 Tolunay-Wong Engineers, Inc. 826 South Padre Island Drive • Corpus Christi,Texas 78416 • Phone:(361)884-5050 April 6, 2018 Ms. Sarah West, P.E., CFM City of Corpus Christi P.O. Box 9277 Corpus Christi, Texas 78469-9277 Via e-Mail: SarahW2@cctexas.com Phone: (361) 826-3676 Ref: Revised Proposal for Geotechnical Engineering Study and Construction Materials Testing Services E10200 La Volla Creek Drainage Channel Excavation Corpus Christi, Texas TWE Proposal No.: P18-CO22R2 Dear Ms. West, Tolunay-Wong Engineers, Inc. (TWE) is pleased to submit this revised proposal to provide geotechnical engineering and construction materials testing services for the referenced project. This proposal presents a general description of the project, our proposed scope of services to be provided, and the estimated cost for completion of our services associated with the project. Project Overview The project consists of excavation of La Volla Creek near the Greenwood Wastewater Treatment Plant (WWTP) to improve drainage characteristics as well as structure additions to Greenwood WWTP in Corpus Christi, Texas. Geotechnical Engineering Scope of Services, Schedule, and Estimated Cost We will provide the personnel, equipment and materials necessary to complete the requirements of our scope of services. Our scope of services can be categorized into three major areas: field program, laboratory testing, and report preparation. The purpose of our geotechnical services will be to provide the geotechnical information needed to assist the Client in the design and construction of La Volla Creek Drainage and Greenwood WWTP Improvements. Field Program As requested, the subsurface conditions at the site will be explored by performing nine (9) soil borings to depths of 10-ft and two (2) soil borings to depths of 20-ft below grade at the time of the borings. We understand that most, if not all, soil borings will be accessed using truck mounted drilling equipment. In the event the locations cannot be accessed by truck mounted equipment, all terrain vehicle (ATV)-mounted drilling equipment may be utilized. The soil boring locations will be identified by TWE and surveyed using a hand-held global positioning system (GPS) device. This Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • .� or egos Page 1 of 6 ExF11B 1 A Paae 2 of 7 • 4 Tolunay-Wong April 6,2018 Engineers, Inc. TWE Proposal No.P18-CO22R2 proposal does not include pricing for professional surveying services to provide precise coordinates and elevations of the soil boring locations. If necessary, pricing for these services can be provided upon request by the Client. We anticipate underground utilities could be of concern at the site location. Our field personnel will work with appropriate City of Corpus Christi personnel to identify and avoid known underground utilities. We will also notify the Texas 811 One Call System prior to the commencement of our field program for clearance of subsurface utilities within the project site. Our field personnel will have the appropriate safety training and will be equipped with the required personal protective equipment. Our geotechnical services will be under the direction of a Professional Engineer experienced in geotechnical engineering. The borings will be logged by an experienced geotechnician. We will dry-auger the soil borings until groundwater is observed or until borehole conditions require the use of wash-rotary drilling methods. In the event groundwater is encountered, the level will be allowed to stabilize for about ten(10)minutes to fifteen(15)minutes prior to completing the soil borings. Geotechnical drilling and sampling will be performed in accordance with ASTM International standards. Samples will be obtained continuously to a depth of 10-ft. Fine-grained, cohesive soils will be sampled using pushed, thin-walled Shelby tubes with an inside diameter of 2.87-in. Our geotechnician will conduct field strength measurements using a pocket penetrometer or hand torvane device on each cohesive soil sample recovered. The samples should be wrapped in foil, placed in moisture sealed plastic bags and handled to minimize disturbance prior to transport to our laboratory. Where coarse-grained, cohesionless and semi-cohesionless soils are encountered, sampling will be performed using standard penetration test (SPT) methods. Our geotechnician will monitor the driving resistance and record blow counts while performing the SPTs. The disturbed samples from the SPT sampling should be placed in moisture sealed plastic bags for delivery to our laboratory. Upon completion of drilling and sampling, the boreholes will be backfilled with cuttings and surrounding surface soils as needed. Any remaining cuttings from the drilling operations will be spread at the ground surface adjacent to the soil boring locations. Laboratory Testing Selected samples from the soil borings will be used for laboratory testing. The requested laboratory testing program will include properties such as moisture content, unit weight, unconfined compression shear strength, Atterberg Limits, and grain size distribution. Report Preparation We will present the results and findings of our geotechnical services in a written report. Electronic copies of our final report will be issued to the Client as requested Our final report will include the following: a. Summary of field and laboratory tasks; b. Discussion and conclusions of our findings including: Houston - Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • g Qileans A Page 2 of 6 E/C1"1 BIT Paae 3 of 7 1 Tolunay-Wong April 6,2018 Engineers, Inc. TWE Proposal No.P18-CO22R2 i. Project site conditions; ii. Subsurface soil and groundwater conditions; iii. Boring logs presenting tabulated field and laboratory test results. c. Geotechnical design recommendations including estimated potential vertical rise (PVR) and settlement for shallow foundation systems including shallow footings/mats to support the new equipment and structures; d. Seismic design criteria for foundations and lateral earth pressures (active,at-rest, and passive)for design of below grade walls;and, e. Geotechnical construction recommendations including site and subgrade preparation, excavation considerations, fill and backfill placement, compaction requirements, foundation installation and overall quality control monitoring, inspection and testing services. Schedule Upon authorization,our field program can typically commence within five(5)working days depending on our current schedule, site access, weather contingencies and subsurface utility clearance. We anticipate the field program will take 2 days to complete with laboratory testing beginning as soil samples are returned to the laboratory. We anticipate being able to complete all laboratory testing within one (1) week. Engineering analysis and preparation of our final report will require two (2) weeks after all laboratory testing is completed. We anticipate an overall project duration of about four (4) weeks from notice to proceed to completion of our report. During this time, we will communicate with the Client and provide preliminary information as needed to avoid delays in the overall project schedule. Estimated Cost The estimated cost associated with our geotechnical services for this project is presented below. Every reasonable effort will be made to stay within this proposed budget. Should unforeseen conditions or situations occur that are beyond the control of TWE, we will not exceed this lump sum amount without prior approval from the Client. Description Unit Quantity Rate I Extension Field Program 1 Mobilization/Demobilization of Truck lump 1 $450.00 $450.00 Mounted Drilling Equipment/Personnel sum 2 Mobilization/Demobilization of ATV lump _ $1,500.00 - Mounted Drilling Equipment/Personnel sum 3 Standard Drilling/Sampling, 0'-50' ft 130 $14.00 $1,820.00 4 Geotechnician hour 15 S60.00 $900.00 5 Vehicle Charge day 2 S75.00 $150.00 6 Standby Time(Outside of TWE Control) hour - $350.00 - Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • beg/leans A Page3of6 XF11K Paae 4 of 7 • • 110 Tolunay-Wot Engineers, Inc. April 6,2018 g TWE Proposal No.P18-CO22R2 Laboratory Testing Moisture Content and Visual 7 ea 32 $15.00 $480.00 Classification 8 Unit Dry Weight ea 13 $20.00 $260.00 9 Atterberg Limits ea 11 $50.00 $550.00 10 Unconfined Compressive Strength ea 13 $40.00 $520.00 11 Percent Finer Than No. 200 Sieve ea 30 $50.00 $1,500.00 Engineering Analysis/Report Preparation 12 Senior Project Manager hour 4 $150.00 $600.00 13 Geotechnical Project Manager hour 18 $150.00 $2,700.00 14 Computer Aided Draftsman hour 7 $75.00 $525.00 15 Administrative Support hour 4 $50.00 $200.00 Total Cost Estimate $10,655.00 The cost presented above includes mobilization/demobilization of truck mounted drilling equipment. In the event ATV mounted drilling equipment is needed the cost will increase by $1050. Construction Materials Testing Scope of Services and Estimated Costs The specific materials monitoring services and laboratory tests anticipated for this project are as follows: A. In-Place Soil Compaction (Nuclear Method) • The technician will obtain samples of soil and/or borrow materials and deliver them to our laboratory facility for testing. Laboratory testing will include Moisture/Density Relationships, Atterberg Limit determinations and sieve analysis. • The technician will perform in-place compaction testing (nuclear method) at the frequency required by the project specifications to determine the moisture content and degree of compaction. Cost Estimate & General Notes In this section of the proposal you will find our cost estimate for construction materials testing services. Additional services or tests requested and not specifically addressed in this proposal will be invoiced per the Master Service Agreement (Project No. 17101A) between the City of Corpus Christi and Tolunay-Wong Engineers, Inc. Based on the testing schedule and estimated material quantities provided to us at this time and the anticipated construction schedule, we have established what we believe is the most realistic cost estimate for this project. Please remember that the units stated are only an estimate. Due to factors beyond our control such as weather, unforeseen conditions, contractor expertise, contractor scheduling, etc., the cost of our services may vary from the estimated amount. Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • Malar ans A Page 4 of 6 ElXC1F'1I1�iI 1 Paae 5 of 7 (10 Tolunay-Wong Engineers, Inc. April86,2018 R2 � TWE Proposal No.P18-CO22R2 We estimate the cost of the construction materials testing for our proposed Scope of Services will be $20,150.00 as detailed below, although all services will be invoiced on a time and materials basis. A minimum 4-hour labor equivalent charge is applicable for all field testing and inspection services. Overtime rates for field personnel are applicable for all hours worked in excess of 8 hours per day, weekends, and holidays and are assessed at 1.5 times the standard rates. All field hours will be charged portal to portal from our Corpus Christi laboratory. All sample pick-ups will be charged travel time from portal to portal and will include associated vehicle charges. Administrative costs, Engineering consultation and evaluation in connection with field and laboratory testing services will be charged at a rate of approximately one hour for each 20 hours of field work performed. Our prices include copies of our reports distributed through e-mail in accordance with your instructions. Additional copies mailed at $0.50 per page. Direct expenses incurred in connection with the project will be invoiced at cost plus 15% for handling. Travel and lodging expenses for out of town assignments will be invoiced at cost plus 15% or $125.00 per day, whichever is greater. Our terms are net 30 days upon receipt of invoice. Invoices will be submitted on a monthly basis. Description Unit Quantity Rate Extension Earthwork Testing 1 Construction Materials Technician, HR. ea. 200 $50.00 $10,000.00 2 Vehicle Charge ea. 50 $75.00 $3,750.00 3 Nuclear Density Gauge, Day ea. 50 $50.00 $2,500.00 4 Sample Pick-up ea. 4 $175.00 $700.00 Laboratory Testing 5 Standard Compaction Effort - ASTM D 698 ea. 6 $160.00 $960.00 6 Atterberg Limits - ASTM D 4318 ea. 6 $65.00 $390.00 7 Percent Finer Minus No. 200 - ASTM D 1140 ea. 6 $50.00 $300.00 Project Management 8 Project Manager, Hr. ea. 10 $105.00 $1,050.00 9 Administrative Support, Hr. ea. 10 $50.00 $500.00 Total Cost Estimate $20,150.00 Closing The cost estimate total of$30,805.00 presented above was developed using the scope of services provided via electronic mail, dated March 19 and March 21, 2018, and the unit rates presented in the Master Service Agreement (Project No. 17101A) between the City of Corpus Christi and Tolunay-Wong Engineers, Inc. We understand that the City will issue a Project Task Order upon acceptance of this proposal in accordance with the MSA and the Task order will serve as our authorization to proceed with our services for the project. Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • �IE�etOrle A Page 5 of 6 E7JCflIBB Paae 6 of 7 Tolunay-Wong April 6,2018 Engineers, Inc. TWE Proposal No.P18-CO22R2 If you have any questions regarding this proposal, please contact us at (361) 884-5050. We appreciate your consideration for this project and we look forward to working with you on this project. Sincerely, TOLUNAY-WONG ENGINEERS, INC. Texas Board of Professional Engineers Firm Registration Number F-000124 �Z1"44 Don R. Rokohl, P.E. Branch Manager DRR/drr Houston • Dallas • Corpus Christi • La Porte • Beaumont • Lake Charles • Baton Rouge • �I��otQrJx. A Page 6 of 6 grams Paae 7 of 7