The URL can be used to link to this page

Home My WebLink AboutC2015-517 - 12/21/2015 - 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 Urban Engineering ("Consultant"), agree to the following amendments to the Contract for Professional Services for Allison Wastewater Treatment Plant Lift Station and Plant Improvements (Project No. El 0043): Original Contract December 16, 2014 Motion No. M2014-174 $244,020.00 In the Original Contract, Exhibit "A", Section I. Scope of Services shall be amended as set forth in the attached Amendment No.1, Exhibit "A". In the Original Contract, Section III. shall be amended based on the modified scope of services in the attached Amendment No. 1, Exhibit "A" for a fee not to exceed $49,600.00, for a total restated fee not to exceed $293,620.00. All other terms and conditions of the December 16, 2014 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 URBAN GINEERIN hA et]e%AM 1?-b fi 5 • - I Ronald L. Olson Date James L. Urban, P.E. Date City Manager Principal 2725 Swantner Corpus Christi, TX 78404 RE MENDED (361) 854-3101 Office i 2 ' (361) 854-6001 Fax 1 Gustavo Gonalez, P.E. Date Assistant-City a age of ' •lic o k a •Ltirlities 1 � 1 x �) I 11/t5/2-//D /5-- - - V. rie H. G y, P. ( Date Ex-- tive Dire or • b arks • opera i g D-•a ment D e APPR•VED AS TO LEGA FORM /S A Atant City Attorney Date 2015-517 12/21/15 Urban Engineering \E10043 ALLISON W\MTP INFLUENT LIFT STATION EQUIPMENT&ELEC REPLA'EME T\E/XE V 1\CONTRACT.DOC NREV.10/1/15 APPROVE' . K"ftY' , — (,( 40110 Office of Management Da, and Budget ATTEST FLI—L-&.itAX" lL City Secretary Date z (-1-/ ( b Project Number E10043 Accounting Unit 4254-064 Account 550950 Activity E10043014254EXP Account Category 50950 Fund Name Wastewater 201V _et,e_t-tp Avi K:\ENGINEERING DATAEXCHANGE\JENNIFER\WASTEWATER\E10043 ALLISON WWTP INFLUENT LIFT STATION EQUIPMENT&ELEC REPLACEMENT\AMENDMENT NO.1\CONTRACT.DOC REV.10/1/15 Job No. 16445.6200 I ' URBAN ENGINEERING March 24, 2015 TRANSMITTED VIA EMAIL AND ORIGINAL MAILED Mr. Jeff Edwards, P.E. Director of Capital Programs City of Corpus Christi P. O. Box 9277 Corpus Christi, Texas 78469 Subject: Allison WWTP Lift Station and Plant Improvements City Project No. E10043 Dear Jeff: We have an A/E Agreement to provide design services for the subject project. This project involves improvements to the plant lift station, site electrical, and other plant improvements. During the project kickoff meeting it was revealed that the Wastewater CIP project funds allocated for this project were greater than the initial scope of the NE contract. Additional items of work were discussed and they are listed in the following: • Second Emergency Generator (to serve Blower MCC): There are two Motor Control Center rooms, one in the Plant Lift Station and one in the Blower Building. The scope of original project is to provide one diesel powered generator for backup power supply to the Plant Lift Station. A second generator is proposed as back power supply to Blower Building, particularly the blowers, which are critical to providing the oxygenation and mixing of the treatment system. Second generator works includes a new automatic transfer switch and main breaker in the Blower Building. • Thickener Scraper Mechanism Clean and Coat (both Pre-Thickener and Post Thickener): Existing scraper equipment is the original equipment installed in 1984 and is showing significate corrosion. It is proposed to sandblast the existing equipment, provide for minor repairs as necessary and paint all steel items. This work could be done while the unit is drained to replace the scum baffles already called for to be replaced in the original scope. • Replace Odor Control Underdrain Pan: The bottom grate that supports the odor control media has broken, allowing the media to spill into the lower chamber. It is proposed to replace the lower grate, reinstall the media and return the odor control system to service. • Replace Lift Station 1984 Roof Addition Siding and Roofing The existing lift station was constructed in 1964 but the roof was raised and modified to accommodate a bridge crane in the 1984 expansion. The existing roof and siding are over 30 years old and have exceeded their service life. Portions of the siding have rotted away. It is proposed to rehabilitate the existing roof structure over the dry pit side of the Plant Lift Station. We have prepared preliminary estimates for each of the items listed above and they are presented in the following table. Based on the project budget it appears that there is $746,880 of additional funds available. (361)854-3101 2725 SWANTNER DR.• CORPUS CHRISTI,TEXAS 78404 FAX (361)854-6001 www.urbaneng.com TBPE Firm#145 AMEND. NO. 1 EXHIBIT"A" Page 1 of 3 • Jeff Edwards, P.E. March 24, 2015 Page 2 of 2 RECOMMENDED ADDITIONAL WORK ITEMS (30% Contingency shown in listed items) Second Emergency Generator(to serve Blower MCC) $585,000.00 Thickener Scraper Mechanism Clean and Coat (both) $67,000.00 Replace Odor Control Underdrain Pan $18,000.00 Replace Lift Station 1984 Roof Addition Siding and Roofing $27,200.00 TOTAL ESTIMATE OF PROB. CONSTRUCTION COST $697,200.00 We are now requesting an amendment to our present AE Agreement to include the additional work noted above. We propose to perform the engineering services indicated above for an additional fee not to exceed $49,600. A proposed fee table, updated estimate of probable construction cost and revised schedule are attached. If the above is acceptable, please prepare an Amendment No. 1 to the agreement. Should you have any questions or wish to meet to discuss please let me know. Sincerely, URBAN ENGINEERING Mark Maroney, P. E. MMI Enclosure xc: Daniel Deng, P.E. —Project Manager w/encl. via email AMEND. NO. 1 EXHIBIT"A" Page 2 of 3 • SUMMARY OF FEES ALLSION WWTP LIFT STATION AND PLANT IMPROVEMENTS(#E10043) SUMMARY OF FEES Original Amendment Contract No. 1 Total Fee for Basic Services 1 Preliminary Phase $35,000.00 $7,500.00 $42,500.00 2 Design Phase $150,000.00 $32,100.00 $182,100.00 3 •Bid Phase $8,600.00 $1,800.00 $10,400.00 4 Construction Phase $38,300.00 $8,200.00 $46,500.00 Sub-Total Basic Service Fees $231,900.00 $49,600.00 $281,500.00 Fee for Additional Services(Allowance) 1 Permit Preparation $0.00 $0.00 $0.00 2 ROW Acquisition Survey $0.00 $0.00 $0.00 3 Topographic Survey\ Field Investigation $0.00 $0.00 $0.00 4 Construction Observation Services $0.00 $0.00 $0.00 5 Start-up Services $8,000.00 $0.00 $8,000.00 6 Warranty Phase $4,120.00 $0.00 $4,120.00 Sub-Total Additional Service Fees Authorized $12,120.00 $0.00 $12,120.00 1 Total Authorized Fee $244,020.00 $49,600.00 $293,620.00 Approved Admin 01/23/15 Approval AMEND. NO. 1 EXHIBIT"A" Page 3 of 3