The URL can be used to link to this page

Home My WebLink AboutC2016-334 - 6/28/2016 - NA CITY OF CORPUS CHRISTI AMENDMENT NO. 1 CONTRACT FOR PROFESSIONAL SERVICES The City of Corpus Christi, Texas, a Texas home-rule municipal corporation ("City") and Coym, Rehmet and Gutierrez Engineering, L.P. ("Consultant"), agree to the following amendments to the Contract for Professional Services for McBride Lift Station and Force Main Improvements (Project No. E14054): Original Contract November 17, 2015 M2015-131 $391,870.00 In the Original Contract, Exhibit"A", Scope of Services shall be amended as set forth in the attached Amendment No.1, Exhibit "A". In the Original Contract, Fees Section shall be amended based on the modified scope of services in the attached Amendment No. 1, Exhibit "A" for a fee not to exceed $49,655.00, for a total restated fee not to exceed $441,525.00. All other terms and conditions of the November 17, 2015 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 CORPUS CHRISTI COYM,REHMET&GUTIERREZ ENGINEERING,L.P. At_br; e,„„„ tp,a-)6 ,, ,,/, „, .. ;A-\ ,__7„ , ,. :) Cit Manager Date Jr ", P. Date Y 9 /� Prhicipal eW )•(� � 0 ..e 5656 S. Staples, Suite 230 /• Corpus Christi, TX 78411 Mark Van Vleck Date (361) 991-8550 Office Assistant City Manager /% (361) 993-7569 Fax der" . r,,,_ ,- Valeri :Gray, P.E. Date Executive Director of Public Works Ki RECOMM' 'ED 47 i - I ..." 01S-A//6 Operatin. •epartmen Date APPROVED AS TO LEGAL FORM i.k (JQa "t�� (017/ilc Assistant Ci Attorney Date 2016-334 6/28/16 INDEXED Coym Rehmet and Gutierrez \E14054 MCBRIDE LIST STATION&FORCE MAIN IMPROVEMENTS\AMENDMENT NO.1\CONTRACT.DOC REV.10/1/15 APPROVED Office01 - of Management a.• :udget at g g ATTEST Vej()X.C.Z43—PULCA•""tv 7/ t VA 6. City Secretary Date Project Name McBride Lift Station and Force Main Improvements Project Number E14054 Accounting Unit 4249-065 Account 550950 Activity E14054014249EXP Account Category 50950 Fund Name Wastewater 2012B RVBD Amendment No. 1 for $49,655.00 K\ENGINEERING DATAEXCHANGE\JENNIFER\WASTEWATER\E14054 MCBRIDE LIST STATION&FORCE MAIN IMPROVEMENTS\AMENDMENT NO.1\CONTRACT.DOC REV.10/1/15 Coym,Rehmet e GutierrezSSW S.STAPLES,SURE 230 CORPUS CHRISTI,TX 7841.1. , Engineering,L.P. 869 ,�N.T BLw,SURE 4 ENGINEERS•PLANNERS•SURVEYORS ALICE,1X 78.332 TBPE Firm Reg.No.F-388 381-664'6821 FAX361464-0559 TBPLS Firm Reg.No.10104001 May 13, 2016 Mr.Jeff Edmonds, P.E. Director of Capital Programs City of Corpus Christi P.O. Box 9277 Corpus Christi, Texas 78469-9277 RE: Contract Amendment No. 1 McBride Lift Station & Force Main Project City of Corpus Christi Project No. E14054 CRG Project No. 20908c Dear Mr. Edmonds, We were recently requested to prepare an amendment to the referenced contract to modify our Engineering Letter Report to include two alternate designs for modifying the discharging wastewater from the McBride Lift Station. This Amendment also contains additional subcontractor fees associated with a supplemental geotechnical investigation which we feel is necessary in order to better identify existing soil conditions at the proposed lift station site and boring bit locations. The first alternate would include a study of efforts to be involved in rerouting the force main from the McBride Lift Station to the Broadway Wastewater Treatment Plant. Currently the McBride Lift Station force main discharges into a gravity manhole which ultimately ends up at the Greenwood WWTP. The current gravity line which receives the flows from the McBride Lift Station was flagged as a Capacity Constraint by the Hydraulic Modeling Report. The intent of this additional study is to determine if rerouting the force main to the Broadway WWTP is a more viable option than upsizing the gravity line which currently receives the McBride Lift Station flows. The second alternate would include a study of efforts which would be involved in construction of an in-system wet weather storage tank in the vicinity of the current McBride Lift Station outfall. The study would determine if a storage tank could be adequately sized large enough to eliminate the current Capacity Constraint identified by the Hydraulic Modeling Report. AMEND. NO. 1 EXHIBIT"A" Page 1 of 4 . • • We propose to perform the following services: AMENDMENT SCOPE: McBride Lift Station Force Main Re-Route to Broadway Plant Study: 1. Investigate multiple routes for proposed force main and recommend best route. 2. Preliminary research for required land acquisition and easements. 3. Perform preliminary design efforts to adequately size the proposed force main. 4. Perform preliminary design efforts to adequately upgrade the existing McBride Lift Station. 5. Discuss the impact of the additional flows on the capacity of the Broadway Wastewater Treatment Plant. 6. Prepare a Preliminary Opinion of Probable Cost for the construction cost of the proposed force main reroute which will include upsizing the McBride Lift Station. 7. Incorporate findings into the Engineering Letter Report for the McBride Lift Station. McBride Lift Station In-System Wet Weather Storage Tank Study: 1. Investigate adding an in-system wet weather storage tank in the vicinity of the outfall manhole for the McBride Lift Station force main. 2. Preliminary research for required land acquisition and easements necessary to facilitate the proposed detention tank. 3. Perform preliminary design efforts to adequately size the proposed detention tank. 4. Use Hydraulic Model to verify that proposed in-system wet weather storage tank eliminates overflows and capacity constraints in the vicinity of the McBride Lift Station force main outfall during design storm conditions. 5. Prepare a Preliminary Opinion of Probable Cost for the construction cost of the proposed in- system wet weather storage tank. 6. Incorporate findings into the Engineering Letter Report for the McBride Lift Station. Supplemental Geotechnical Investigation: 1. Review of the existing Geotechnical Investigation Dated June 26, 2009 was deemed to be inadequate as the boring depths were not deep enough for the proposed improvements. 2. Provide additional boring to depths adequate for the improvement associated with this project at the lift station site and boring bit locations. 3. Incorporate findings into the Engineering Letter Report for the McBride Lift Station. 4. A fee proposal from Rock Engineering to perform the additional borings as indicated can be viewed in Attachment "C". AMEND. NO. 1 EXHIBIT"A" Page 2 of 4 FEES The total amount of this Amendment is $49,655 as shown in the summary on Attachment "A". The man-hour fee analysis for the Amendment is shown in Attachment "B". The Rock Engineering proposal for supplemental geotechnical subsurface investigation can be viewed on Attachment "C". REVISED SCHEDULE DATE ACTIVITY To Be Determined NTP 2 Months After NTP Draft ELR Submittal 3 Months After NTP City Review 4 Month After NTP Final ELR Submittal 7 Months After NTP 60% Design Submittal 8 Months After NTP City Review 11 Months After NTP 100% Design Submittal 12 Months After NTP City Review TBD Pre-Bid Conference TBD Receive Bids TBD Contract Award TBD Begin Construction TBD Complete Construction If you have any questions, please call me at (361) 991-8550 or email me at jcoym('crgei.com. Very truly yours, Coym, Rehmet& Gutierrez Engineering, L.P. Jeff Coym, P.E. Principal Attachments:jcc AMEND. NO. 1 EXHIBIT"A" Page 3 of 4 McBride Lift Station and Force Main Project (City Project No. E14054) Summary of Fees Attachment "A" Original Contract AMD. NO.1 Total BASIC SERVICES 1 Preliminary Phase 569,660.00 541,235.00 5110,895.00 2 Design Phase 5206,685.00 50.00 5206,685.00 _ Subtotal Basic Services 5276,345.00 541,235.00 5317,580.00 ALLOWANCES 3 Bid Phase 56,995.00 50.00 $6,995.00_ 4 Construction Phase 542,730.00 50.00 $42,730.00 5 Additional Services Allowance 521,365.00 50.00 521,365.00 6 Hydro -Excavation (SUE) Sub -Consultant 544,435.00 50.00 $44,435.00 7 Supplemental Geotechnical Report 50.00 58,420.00 58,420.00 Subtotal Additional Services 5115,525 58,420.00 576,510.00 Total Fee 5391,870.00 549,655.00 5441,525.00 11/17/2015