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Home My WebLink AboutC2026-137 - 9/1/2026 - Approved RC •_ Service Agreement No. 6471 M CITY OF CORPUS CHRISTI AMENDMENT NO. 1 to the CONTRACT FOR PROFESSIONAL SERVICES The City of Corpus Christi, Texas, hereinafter called "CITY," and Terracon Consultants, Inc. hereinafter called "CONSULTANT," agree to the following amendment to the Master Services Agreement Contract for Professional Services for Geotechnical and Construction Materials Testing, as authorized and amended by: Original Contract April 16, 2025 Motion No. M2025-026 $3,000,000.00 IN THE ORIGINAL CONTRACT, EXHIBIT A, SCOPE OF SERVICES, shall be modified as shown in the attached Exhibit A. IN THE ORIGINAL CONTRACT, COMPENSATION shall be modified as shown in the attached Exhibit A for an additional fee not to exceed $1,501,795.50 for a total revised fee not to exceed $4,501,795.50. All other terms and conditions of the April 16, 2025 contract between the "CITY" and "CONSULTANT" and of any amendments to that contract which are not specifically addressed herein shall remain in full force and effect. CITY OF CORPUS CHRISTI TERRACON CONSULTANTS, INC. ��az Sep 16, 2026 kevrh L�,XhaPd Sep 16, 2026 Jeff dmonds(Sep 16,2026 09:14:06 CDT) Kevin Luidhardt(Sep 16,2026 08:32:22 CDT) Jeff H. Edmonds, P.E. Date Kevin Luidhardt, EIT Date Director of Engineering Services Operations Manager 3606 WOW Rd. Corpus Christi, TX 78413 Kevin.Luidhardt(o)terracon.com APPROVED AS TO FORM M2026-094 Sep 16,2026 Janet Whitehead(Sep 16,2026 08:34:38 CDT) Legal Department Date 9/1/2026 RH/SB PAPE - DAWSON MEMO TO: Nick Winklemann, Chief Operating Officer DATE: 05/14/2026 Corpus Christi Water FROM: Chris Noe, P.E. PROJECT NO.: 11013974-001 RE: Terracon The Terracon proposal for materials testing services associated with the 27100 Evangeline / San Patricio County Water Supply Program has been reviewed in our capacity as Owner's Advisor. Based on our review of the scope, assumptions, and deliverables outlined in the attached proposal, we find that the proposed services are consistent with the project specifications and adequately address the required field and laboratory testing for earthwork, concrete, masonry, and structural components. While the proposal notes that final construction scheduling was not available at the time of preparation, the outlined approach—particularly the as-requested service model and defined notification requirements—is compatible with the CMAR contractor's anticipated sequencing and can be effectively integrated into the project schedule with standard coordination. Importantly,Terracon is directly contracted with the City of Corpus Christi under an existing Master Services Agreement, which aligns with the project delivery structure and supports clear lines of responsibility for quality assurance and materials testing. In our opinion, the proposal supports the overall project objectives and is suitable for implementation, subject to ongoing coordination with the CMAR contractor to ensure timely scheduling and execution of testing services. Please let us know if any additional review or coordination is required. END OF MEMO Attachment - Terracon Proposal P:\139\74\01\Word\Memo\260514a 1.docx 800 E.Sonterra Boulevard,Suite 400, San Antonio,Texas 78258 210-375-9000 PAPE-DAWSOWCOM 3606 WOW Rd Terracon Corpus Christi, 78413 P (361) 42 420-6000-6000 Terracon.com April 29, 2026 City of Corpus Christi 1201 Leopard St. Corpus Christi, TX 78401 Attn: William Causey P: 3618261609 E: williamc8@corpuschristitx.gov RE: Proposal for Materials Services 27100 Evangeline/San Patricio County Water Supply Program Sinton, Texas Terracon Proposal No. PCD261008 Dear Mr. Causey, Thank you for selecting City of Corpus Christi to provide Materials services for the above referenced project. The following are exhibits to the attached Task Order. 1.0 Project Understanding 2.0 Scope of Services 3.0 Schedule 4.0 Compensation 5.0 Assumption and Limitations The Task Order refers to the previously signed Master Services Agreement (6471) between Terracon and the City of Corpus Christi dated April 16, 2025. Sincerely, Terracon Consultants, Inc. Twr o 5allcke rp Ker,1�/_cucz�rG�cr Turo Sanchez ? Kevin Luidhardt, E.I.T. Group Manager Operations Manager Proposal for Materials Services Terracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas id April 29, 2026 1 Terracon Proposal No. PCD261008 1.0 Project Understanding Item Description 24 Well Sites Project Description Pumpstation and Transmission Line Foundation type Shallow foundations Backfill testing - 180,000' Sitework Transmission pipeline backfill testing - 6,200' Miscellaneous concrete and soils testing at multiple sites. Terracon was provided with the following construction documents for preparation of this proposal: Testing schedule estimate A construction schedule was not provided at the time this proposal was prepared. We request the right to review the construction schedule and revise this proposal based on the schedule once it is provided. Note: This estimate is based on the preliminary drawings. Completed construction plans will be necessary for a better representation of cost & materials testing. .0 Scope of Services Our proposed Scope of Services consists of field and laboratory testing. These services are described in the following sections. Scope Item Description Sample subgrade, select fill and base material. Prepare and Earthwork test the samples for Atterberg Limits and percent fines. Test soil samples for moisture-density relationship. Facilities I Environmental I Geotechnical I Materials 2 Proposal for Materials Services Terracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas id April 29, 2026 1 Terracon Proposal No. PCD261008 Scope Item Description Observe proofrolling operations of the building pad and paving subgrades; and perform density tests of the subgrade, select fill and base using the nuclear method to determine the moisture content and percent compaction of the soil materials. Observe reinforcing steel prior to concrete placement. We will observe the rebar size, spacing and configuration. Terracon recommends we be scheduled a minimum of 24 hours prior to concrete placement. Sample and test the fresh concrete for each mix. Perform tests including slump, air content, concrete temperature, and cast test specimens (ASTM C31, C143, C172, C231 and C1064). Terracon will make every attempt to cure specimens in accordance with ASTM C31. However, per ACI 301, the contractor shall provide a secure area, along with Cast-in-Place a source of water and electricity in order for Terracon to Concrete maintain the initial curing temperature of concrete test specimens. Failure of the contractor to provide these items may result in an exclusion of Terracon being able to provide the correct initial curing environment as required by ASTM C31. Occasionally, additional costs are associated with Terracon providing the correct initial curing environment for concrete test specimens, especially during the seasons with elevated ambient temperatures. This should be discussed during the pre-construction meeting Perform compressive strength tests of concrete test cylinders cast in the field (ASTM C39). Observe the reinforcing steel in CMU walls and bond beams. Sample the fresh grout during construction and cast grout Masonry, Mortar,and Grout prisms for compressive strength tests. Observe fabrication of CMU prisms, transport CMU prisms to our laboratory after initial curing, and test for compressive strength. Facilities i Environmental i Geotechnical i Materials 3 Proposal for Materials Services Terracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas id April 29, 2026 1 Terracon Proposal No. PCD261008 Scope Item Description In the field to visually check accessible field bolted/welded Structural Steel connections in accordance with applicable AISC and AWS Welded and specifications. Bolted Connections Perform visual inspections of 100% of completed accessible welds to verify that the welds meet the visual acceptance criteria contained in AWS D1.1. Attend preconstruction or preinstallation meetings. Coordinate field and laboratory testing. Project Communicate with Terracon Engineering Technicians, Management and Administration Contractor, and Owner's site representative. Review laboratory and field test reports. Monitor our budget. Scheduling Retests It is the responsibility of your representative to schedule retests in a like manner to scheduling our original services. Terracon shall not be held responsible for retests not performed as a result of a failure to schedule our services or any subsequent damage caused as a result of a lack of retesting. Additional Sfarvir'pr If you would like us to perform additional work, please contact us and we will issue a short Supplement to Agreement form, or Supplemental Proposal, that outlines the additional work to be performed and associated fees. To authorize us to begin work, you simply return a signed copy of the Supplemental agreement. .U Schedule Terracon's services will be performed on an as-requested basis with scheduling by the client or the client's designated representative. Terracon will not be responsible for scheduling our services and will not be responsible for tests or observations that are not performed due to failure to schedule our services on the project. Since our personnel will not be at the site on a resident basis, it will be imperative that we be advised when work Facilities i Environmental i Geotechnical i Materials 4 Proposal for Materials Services Terracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas April 29, 2026 1 Terracon Proposal No. PCD261008 is in progress. Services should be scheduled a minimum of 72 hours in advance for all trips made for the performance of structural steel testing / inspections and 24 hours in advance for all trips made for the performance of other testing / inspections. Scheduling personnel will be on an as-available basis which may require changes in personnel assigned to the project. For instances of short-notice requests, personnel may have to be utilized which have a higher rate than those normally assigned, and this higher cost may be passed on to the client. All requests for services should be submitted to the Corpus Christi dispatch at the following phone number: (361) 420-6020. Services should not be scheduled through our field personnel. We recommend the scope of work described in this proposal be provided to the person(s) responsible for scheduling our services, so they are aware of the services that are proposed. Compass Compass is Terracon's latest client interfacing tool and elevates the way we do business. Terracon Compass offers you the ability to view and interact with your testing data in a new way and is committed to using innovative techniques to deliver quality projects. Construction data is viewed by geographic location in relation to your project drawings as part of our seamless project delivery system. Within Terracon Compass, you can access our projects and their associated data, including environmental and geotechnical projects. When you open a materials project within Compass, you will see your materials tests and observations placed on a map. This geographic reference allows you to find your information by the "where", rather than the "when." Other features and advantages of Compass include: Filters for Date Performed, Service Type and Test Result Status and intuitive test status designations Augmented Testing Reports with In-Place Locations Deviation or Non-Conformance Summary: Image overlays to reference multiple plan pages to your test results Map layer options: Test results are inserted into Compass as soon as the report has been reviewed and distributed. It becomes easier than ever to view and close deviations with an option to display within a map while also showing them in a table format. Facilities i Environmental i Geotechnical i Materials 5 Proposal for Materials Services �erraeon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas April 29, 2026 1 Terracon Proposal No. PCD261008 Quicker turnaround of information and reports Compass EASILY FIND REPORTS THROUGH INTUITIVE C;M"ate RINge-Lot U FILTERS AND LOCATIONI-S c.17m n �.usq su:,.r:effiar.,,,.-..vm.it{ 6 nar�n aeren L° y 4 Ctrs.d II.�1 P'sii4lGi Gec1a'rrs�Ns�'r T^r•Nnl f.ouli•"..aE PiG i 4 wn •r..L.r.ern nMkaeL.n s.. .mow.mew._, c -_. q r�#Ard R4R.r.w:..r.ib11+L4livr.4M � •ri.ntia'.tuerx� _ Iedr..nW Pys'I.sY.n.M1UINNul - . .K+e w+. •�r^Jror•br_tlV�R^ B. rr;«eP�.. �: ,�! i 1lsL{4..Crxv:Riw°tlb'AI`C�LULm Lu � ty Hlw ass i,nvs4lRs: 1�_ y { - Pniccl Mc/ � �TN, ?F ire ova au MP: WQ NOW r 31 o.rPxw • , �= .°raarrlr.., I - l _---..� .- __ �.a..s.,¢..e.•.. ei1mM,.n�ap.-.. a . .. .,. . °.: -c Traditional methods of reporting and accessing results of your project's inspections, testing, and observations are no longer sufficient for today's construction projects. With a large number of reports generated on a single project, you now have a solution to quickly find and view specific data to make timely, informed decisions for your project. One of Terracon Compass' greatest strengths is that we curate your projects for your future. Terracon Compass shows your team members an interactive map with locations of past and present projects to navigate geographically; or for those that prefer a tabular format, we have that option too. Either way, as you collaborate with Terracon, your team members will be able to build a library of past projects curated online through a secured login. That means a few years after completion, your team can readily find a final, signed deliverable. Report Turnaround Time We understand the importance of report turnaround to our clients, and we are committed to delivering test results on a timely basis as well as the following reporting standards: Failing tests or non-conformance items will be communicated to the designated parties prior to leaving the site and handwritten draft reports are available at the end of each day. Facilities I Environmental I Geotechnical I Materials 6 Proposal for Materials Services Terracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas April 29, 2026 1 Terracon Proposal No. PCD261008 Final reports with non-conformances (Deviation Reports) will be provided within 24 hours of testing. Terracon will maintain a deviation log which will be maintained electronically in our database and can be updated or emailed at any time. Final reports without non-conformances will be provided within five business days. Final laboratory test reports will be provided within two days of test completion. v .0 Compensation Based upon our understanding of the site, the project as summarized in Item 1.0, and our planned Scope of Services outlined in Item 2.0, our estimated fee is shown in the following table: Materials Services 27100 Evangeline-San Patricio County Water Supply Terracon Proposal No. PCD261008 Access Road, Backfill and Wells $ 1,134,475.00 Earthwork Observation and Testing $ 1,100,875.00 Observation and Testing $ 1,096,375.00 Soils Technician $ 75.00 hours 430 9030 $ 677,250.00 Soils Technician(OT) $ 112.50 hours 430 1720 $ 193,500.00 Standard Proctor(ASTM D698) $ 250.00 tests 1 30 $ 7,500.00 Atterberg Limits Determination(1 pt.)(ASTM D4318) $ 90.00 tests 1 30 $ 2,700.00 Wash 200,Soil(ASTM D1140) $ 80.00 tests 1 30 $ 2,400.00 Modified Proctor(ASTM D1557) $ 275.00 tests 1 5 $ 1,375.00 Sieve Analysis,Soil(Washed over#200 sieve) (ASTM D6913) $ 100.00 tests 1 5 $ 500.00 In-place Nuclear Gauge Moisture-density testing(soil),per test $ 22.00 each 1 5200 $ 114,400.00 Vehicle Trip $ 75.00 day 430 1290 $ 96,750.00 Sample Pickups $ 4,500.00 Sample Pickup $ 75.00 hours 10 50 $ 3,750.00 Vehicle Trip $ 75.00 day 10 10 $ 750.00 Concrete Observation and Testing $ 33,600.00 Observation and Testing $ 26,400.00 Concrete Technician $ 75.00 hours 48 240 $ 18,000.00 Compressive Strength of 4"x 8"Cylinder(ASTM C39) $ 20.00 tests 48 240 $ 4,800.00 Vehicle Trip $ 75.00 day 48 48 $ 3,600.00 Sample Pickups $ 7,200.00 Sample Pickup $ 75.00 hours 24 72 $ 5,400.00 Vehicle Trip $ 75.00 day 24 24 $ 1,800.00 Facilities I Environmental I Geotechnical Materials 7 Proposal for Materials Services lFrerracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas April 29, 2026 Terracon Proposal No. PCD261008 Fee EstimatT Materials Services 27100 Evangeline-San Patricio County Water Supply Terracon Proposal No. PCD261008 • DESCRIPTION • QUANTITY Pump Station $ 159,332.50 Earthwork Observation and Testing $ 111,647.50 Observation and Testing $ 82,815.00 Soils Technician $ 75.00 hours 50 400 $ 30,000.00 Soils Technician(OT) $ 112.50 hours 50 100 $ 11,250.00 Standard Proctor(ASTM D698) $ 250.00 tests 10 $ 2,500.00 Atterberg Limits Determination(1 pt.)(ASTM D4318) $ 90.00 tests 7 $ 630.00 Wash 200,Soil(ASTM D1140) $ 80.00 tests 7 $ 560.00 Modified Proctor(ASTM D1557) $ 275.00 tests 3 $ 825.00 Sieve Analysis,Soil(Washed over#200 sieve) (ASTM D6913) $ 100.00 tests 3 $ 300.00 In-place Nuclear Gauge Moisture-density testing(soil), per test $ 22.00 each 1500 $ 33,000.00 Vehicle Trip $ 75.00 day 50 50 $ 3,750.00 Sample Pickups $ 2,250.00 Sample Pickup $ 75.00 hours 5 25 $ 1,875.00 Vehicle Trip $ 75.00 day 5 5 $ 375.00 Tank Settlement Monitoring $ 26,582.50 Hanson Professional Services $ 26,507.50 lump sum $ 26,507.50 Vehicle Trip $ 75.00 day 1 $ 75.00 Concrete Observation and Testing $ 22,675.00 Concrete Observation and Testing $ 8,750.00 Concrete Technician $ 75.00 hours 10 80 $ 6,000.00 Compressive Strength of 4"x 8"Cylinder(ASTM C39) $ 20.00 tests 100 $ 2,000.00 Vehicle Trip $ 75.00 day 10 10 $ 750.00 Drilled Pier Observations $ 5,550.00 Concrete Inspector $ 85.00 hours 5 40 $ 3,400.00 Concrete Inspector(OT) $ 127.50 hours 5 10 $ 1,275.00 Compressive Strength of 4"x 8"Cylinder(ASTM C39) $ 20.00 tests 25 $ 500.00 Vehicle Trip $ 75.00 day 5 5 $ 375.00 Flowable Fill Testing $ 3,875.00 Concrete Technician $ 75.00 hours 5 40 $ 3,000.00 Compressive Strength of 4"x 8"Cylinder(ASTM C39) $ 20.00 tests 25 $ 500.00 Vehicle Trip $ 75.00 day 5 5 $ 375.00 Sample Pickups $ 4,500.00 Sample Pickup $ 75.00 hours 15 45 $ 3,375.00 Vehicle Trip $ 75.00 day 15 15 $ 1,125.00 Masonry Observation and Testing $ 20,900.00 Observation and Testing $ 14,900.00 Masonry Inspector $ 85.00 hours 20 120 $ 10,200.00 Compressive Strength of 3x6 inch Grout Prism(ASTM C1019) $ 40.00 tests 80 $ 3,200.00 Vehicle Trip $ 75.00 day 20 20 $ 1,500.00 Sample Pickups $ 6,000.00 Sample Pickup $ 75.00 hours 20 60 $ 4,500.00 Vehicle Trip $ 75.00 day 20 20 $ 1,500.00 Structural Steel $ 4,110.00 Observations $ 4,110.00 CWI Inpector $ 140.00 hours 3 24 $ 3,360.00 Vehicle Trip(CWI) $ 250.00 day 3 3 $ 750.00 Facilities I Environmental I Geotechnical Materials 8 Proposal for Materials Services Terracon 27100 Evangeline/San Patricio County Water Supply Program I Sinton, Texas April 29, 2026 1 Terracon Proposal No. PCD261008 Fee Estimate Materials Services 27100 Evangeline-San Patricio County Water Supply Terracon Proposal No. PCD261008 TOTA�- DESCRIPTION RATE UNITS TRIPS Administration • $ 28,000.00 Administration $ 70.00 hours 400 $ 28,000.00 Project Management $ 179,988.00 Project Manager $ 150.00 hours 900 $ 135,000.00 Senior Engineer $ 190.00 hours 150 $ 28,500.00 Executive Finance $ 259.62 hours 30 $ 7,788.60 Project Executive $ 289.980 hours 30 $ 8,699.40 The actual cost of our services will be determined by the construction schedule and the quantity of services provided. Overtime is defined as hours worked more than 8 per day, all ours worked outside of daylight hours of 6:00 AM to 6:00 PM Monday through Friday and all time worked on Saturdays. Overtime rates will be 1.5 times the hourly rate quoted. Overtime rates of 2 times the quoted hourly rate will be applicable for all time worked on Holidays and Sundays. A 3-hour minimum charge will be applied to all trips made to provide testing, observation, and consulting services. A 2-hour minimum charge will be applied to all sample and cylinder pick-ups. All labor, equipment and transportation charges are billed on a portal-to-portal basis from our office. You will be invoiced monthly for services performed. Terracon invoices are due within 30 days following final receipt of the invoice. This is a budget estimate and not a not-to-exceed price. Many factors beyond our control such as the weather and the contractors schedule will dictate the final fee for our services. Quantities for re-tests, cancelations and stand-by-time are not included in our fee. A $100 charge will be added for same day scheduling. Terracon will charge a $25.00 fee each time we have to provide curing boxes for concrete specimens. 5.0 Assumption and Limitations In preparing this proposal, we assumed work would occur 5 days per week and that our services would be performed on an as requested basis. Our cost estimate assumes that work occur during normal business hours. Our services will be invoiced in accordance with Item 4.0. Facilities i Environmental i Geotechnical i Materials 9 Signature: &9eVae D-VlShaW Signature: S"d-t, ReVae Crenshaw(Sep 16,2026 13:73:58 CDT) Sarah Brunkenhoefer(Sep 16,2026 13:27:2 CDT) Email: revaec@corpuschristitx.gov Email: sarahb@corpuschristitx.gov