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HomeMy WebLinkAbout2011 CON Harris & Associates - 8th Street Revitalization Project - Supplemental AgreementDEVELOPMENT SERVICES DEPARTMENT ENGINEERING DIVISION 1243 NATIONAL CITY BOULEVARD, NATIONAL CITY, CA 91950 TEL:619/336-4380 FAX: 619/336-4397 August 23, 2011 Ehab Gerges, P.E. Harris & Associates 750 B Street, Suite 1800 San Diego, CA 92101 Subject: SUPPLEMENTAL AGREEMENT FOR CIVIL ENGINEERING SERVICES Project: NATIONAL CITY 8TH STREET SMART GROWTH REVITALIZATION PROJECT This is a Supplemental Agreement to the original agreement dated March 2, 2010 (Resolution No. 2010-28) between the City of National City and Harris & Associates for Civil Engineering Services for the National City 8th Street Smart Growth Revitalization Project. This supplemental agreement provides for an additional not -to -exceed amount of $12,850.00 to provide additional utility undergrounding design. Proposed Contract Amendment: $12,850.00 Revised Contract Amount: $3601652.00 Reviewed by: 2/i, r/i., S ephen Mangiello Date Traffic Engineer Approved by: ryam Bab City Engineer P.E. Date Harris & Associates. Shaping the Future, One Project at a Time August 22, 2011 Mr. Stephen Manganiello City Traffic Engineer City of National City 1243 National City Boulevard National City, CA 91950 Subject: Proposal for additional Design for feh Street District 24 20A Conversion, in the City of National City Dear Steve, Per your request, the following is a proposal to provide additional design services to address undergrounding of existing overhead utilities for the Harborview Condominiums, located on the southeast corner of 8"' Street and D Avenue. PROJECT UNDERSTANDING This proposal is to provide additional design services to address undergrounding of existing overhead utilities for the Harborview Condominiums.. The subject property has a pole on the corner of 9`h Street and the alley just east of east of D Avenue. SDG&E, AT&T and Cox will be responsible for the design of their respective facilities. It is our understanding that this work will bid as an additive alternate bid with the 8`h Street District 24 20 A Conversion District package. Our scope of work is limited to the items outlined in the scope of services below and our estimated effort. Scope of Services 1.1 Review Meetings We will schedule and attend meetings with SDG&E, AT&T and Cox Communications to obtain each utility's final designs and agreements. One meeting will be scheduled with each utility. 750 B'Street, Suite 1800 San Diego, California 92101 619.236.1778 FAX 619.236.1179 sandiego@harris-assoc.com August 22, 2011 Steve Manganiello Page 2 of 3 1.2 Base Mapping Utilizing the Harborview CAD files provided by the City, we will prepare base maps for the additional design. Base maps will be prepared in plan only formats. All underground utilities shown on the Harborview plans will be verified. All base maps will be prepared in AutoCAD. 1.3 Utility Composite & Bid Documents 1. Utilizing the SDG&E electric trench, conduit and substructure design, the AT&T design, and Cox design, prepare a composite exhibit utilizing the base maps. 2. Re -draft the SDG&E electric Trenching Items of work design on the base maps replicating typical SDG&E design and appearance. This re -drafted design will then be provided to SDG&E for their approval. 3. Prepare alternate bid items descriptions to include with the 8`h Street District 24 20A Conversion bid documents. 1.4 Preliminary Opinion of Probable Construction Cost Estimate Separate the opinion of the probable undergrounding construction cost for the Harborview Condominiums including the two poles on 8th Street. FEES Harris & Associates proposes to provide the above services for the total "not -to -exceed" fee of $12,850. Our services would continue to be invoiced monthly based on the actual hours of work completed. Our services would be accomplished per our existing agreement with the City, and all terms and conditions would be as stated therein. u Harris & Associates. August 22, 2011 Steve Manganiello Page 3 of 3 ASSUMPTIONS / INFORMATION REQUESTED • SDG&E to provide: 1) Trench, conduit, and substructure design; 2) Electric Cable and Hardware design • Utility composite and proposed revisions to SDG&E electric trench, conduit, and substructure design are to be reviewed and approved by SDG&E. SDG&E will make all necessary revisions to the cable and hardware design including voltage drop, flicker, pulling calculations to their preliminary design plans • Potholing of existing utilities is not included in the scope of this proposal • City will provide CAD files needed for base mapping • No field survey is included in this proposal Sincerely, Harris & Associates Ehab Gerges, PE Vice President Cc: Bob Sutherlin, Harris & Associates Dan Lee, Harris & Associates I:\Projects\City of National City\Sth Smart Growth Stree0Administmtion Items\Contractual Items\District 24 20A Conversion Proposal dnc Harris & Associates.