The URL can be used to link to this page

Home My WebLink AboutC2018-532 - 8/15/2018 - NA CITY OF CORPUS CHRISTI AMENDMENT NO. 1 CONTRACT FOR PROFESSIONAL SERVICES The City of Corpus Christi, Texas, hereinafter called "City," and Stearns, Conrad and Schmidt, Consulting Engineers, Inc. (SCS), hereinafter called "Consultant," agree to the following amendment to the Contract for Professional Services for Solid Waste Air Compliance and Gas Monitoring 2018 (Project No. E17115) as authorized and administratively amended by: Original Contract January 16, 2018 Motion No. M2018-007 $156,840.00 EXHIBIT A, SECTION 2. SCOPE OF SERVICES shall be amended as set forth in the attached Amendment No. 1, Exhibit "A". EXHIBIT A, SECTION 3. FEES, SUMMARY OF FEES shall be amended based on the modified scope of services in the attached Amendment No. 1, Exhibit "A" Summary of Fees for a fee not to exceed $30,897 for a total restated fee not to exceed $189,737. All other terms and conditions of the January 16, 2018 Contract for Professional Services 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 CORPU CH ISTI S E GINEERING, INC. 443' 8/8//8 Mark Van Vleck, D to David J. ezzacappa, P.E. Date Assistant City Ma ag=r Vice President 1901 Central Drive, Suite 550 ` L V15tooBedford, TX 76021 (817) 571-2288 Office Vale ie H. Gra P. E., — •-te dmezzacappa@scsengineers.com Ex- utive Dire w o 11.1k f orks AlP s 4 v 1/7( J=• H. Edmonds, P. E., Date Director of Engineering Services APP(( 11n ec TO LEGAL FORM 2018.08.10 ' 15:37:38-05'00' Assistant City Attorney Date A EST u...4_4--(ctes-i-rA City Secretary Date 6/1 7/1 g "--- .. .. .- C2018-532 8/15/18 Stearns Conrad and Schmidt SCANNED • Environmental Contractors 8107 Springdale Road (512)440-1888 Suite 108 (512)879-4039 fax Austin,TX 78724 www.scsfieldservices.com SCS HELD SERVICES July 30, 2018 File No. 16218023.00 Mr. Tony Benavides Disposal and Environmental Compliance Superintendent City of Corpus Christi P. O. Box 9277 Corpus Christi, Texas 78469-9277 Subject: E17115 Amendment#1 Solid Waste Air Compliance and Gas System Monitoring 2018 Corpus Christi,Texas Proposal for Well Extensions and Lowerings(Revised) Dear Mr. Benavides: SCS Field Services (SCS-FS) is pleased to submit this proposal to the City of Corpus Christi (City) to extend and lower landfill gas(LFG) extraction wells at the Cefe Valenzuela Landfill (Site) which are part of the gas collection and control system(GCCS). Proposal details related to scope, schedule, assumptions, and costs are provided below. SCOPE OF SERVICES Task 1 — Fabrication of Spool Pieces for Well Extension Since well casings and associated lateral (vacuum) lines are flanged, spool pieces will be fabricated at the Site to use in extending the wells. All spool pieces will be produced by SCS-FS personnel prior to any wells being extended. Task 2 —Well Extension and Lowering SCS-FS will extend 13 LFG extraction wells at the Site to accommodate ongoing disposal operations. Each extension will be limited to 10 feet. To account for filling in the area, it is anticipated that each well may have to be extended twice. While an SCS-FS crew will fabricate the spool pieces(see above), wells will typically be extended by an SCS-FS technician with assistance from City personnel. In addition to installation of spool pieces, two to three wells may have air and leachate forcemain lines associated with them which will need to be extended. To accommodate possible removal of waste in the future, lowering of extended wells may be necessary. Wells would be lowered as waste around them is removed by disconnecting individual spool pieces and then reinstalling the wellheads. To facilitate well lowering, a backhoe or excavator with operator will be needed to assist personnel. These services are also accounted for under this task. AMEND. NO. 1 Exhibit"A" Page 1 of 4 • • • Mr. Tony Benavides July 30, 2018 Page 2 SCHEDULE SCS-FS is prepared to implement the scope of services described in this proposal within two weeks of receiving authorization from the City to proceed. Spool fabrication work will be completed prior to any wells being extended. Wells will then be extended on multiple future dates as disposal operations progress along the topslope of the fill area. Wellhead lowering will occur in the future on an as-needed basis. ASSUMPTIONS AND CONDITIONS With regard to services performed in accordance with this proposal scope, SCS-FS offers the following assumptions and conditions: 1. Spool fabrication work will be done by a two-man SCS-FS crew with all materials and equipment necessary to complete the work. 2. Well extensions will typically be performed by an SCS-FS technician with assistance from City personnel. 3. After being extended, the City will place soil around the wells to stabilize them and minimize the potential for damage from heavy equipment and vehicles. This will also facilitate monitoring of wells until the area is brought up to grade. 4. Well lowering will be performed by an SCS-FS technician with assistance from City personnel. In addition to personnel, the City will also provide a backhoe or excavator with operator to facilitate removal of the spool piece and wellhead. 5. To reduce mobilization costs, well extensions and lowerings will be scheduled to occur in conjunction with routine monthly GCCS operations, monitoring, and maintenance services. To accommodate times when this is not feasible, separate mobilization costs have been accounted for in the cost estimate below. 6. Weather and site conditions will be suitable for accomplishing the work in accordance with the proposed schedule. 7. This proposal is valid for 60 days from the date of this submittal. This proposal is confidential and for the City's use only. Work will be performed under the contract that SCS-FS currently has with the City. COST ESTIMATE Services will be provided on a time-and-materials basis for the estimated not-to-exceed costs indicated below. AMEND. NO. 1 Exhibit"A" Page 2 of 4 Mr. Tony Benavides July 30, 2018 Page 3 Task Service Service Estimated Number Type of Service Frequency Period' Cost Fabrication of Spool 1 Pieces for Well One Time 2018 $20,919 Extension Well Extension and 2 As Needed 2018 $9,978 Lowering Total $30,897 Tables showing how costs were determined are included with this proposal. These costs cover labor,equipment and materials, and other reimbursables assumed necessary for the anticipated services. The actual allocation of costs may differ from that shown in the tables; however,the total cost will not be exceeded without prior approval from the City. If additional services are needed beyond the scope of this proposal,then they will be provided in accordance with the current contract fee schedules and only with prior approval from the City. If you find this proposal acceptable,then you may indicate your approval by issuance of a PO number and/or by signing below and returning a copy of this proposal to SCS-FS. CLOSING SCS-FS appreciates the opportunity to provide this proposal to the City. If you have any questions related to the proposal,please contact Rusty Fusilier at telephone number(512) 750- 5446. Sincerely, --_ dyLavvvy a:att./4.1c Jason Lewallen Rusty Fusilier,P.E. Project Manager Project Manager SCS FIELD SERVICES SCS FIELD SERVICES JL/RF:rf Enclosure cc w/enclosure: Ivan Luna, City of Corpus Christi Luis Vargas, City of Corpus Christi David Mezzacappa, SCS Engineers Ron Wilks, SCS-FS Jason Lewallen, SCS-FS Katie Ewing, SCS-FS Joe Ortiz, SCS-FS AMEND. NO. 1 Exhii.,it "A" Page 3 of 4