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HomeMy WebLinkAboutSHN Consulting Engineers & Geologists, Inc. 2016-05-09; Amendment 2 2016-05-09ca,c -�Ivc I S--) lbe -1?, 17- 11- A-.2- CITY -E CITY OF UKIAH AMENDMENT NO. 2 TO AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES DATED MAY 9, 2016 TERMS AND CONDITIONS All terms and conditions of the Agreement for Professional Consulting Services dated May 9, 2016 and the First Amendment dated September 19, 2016 shall remain in force and effect except as modified by this second amendment. AUTHORIZATION Upon execution of this amendment, service provider is authorized to provide the service described under the Scope of Additional Work identified in this Amendment No. 2. SCOPE OF ADDITIONAL WORK Work authorized by this amendment shall include that work described in the August 30, 2016 letter proposal from SHN Consulting Engineers & Geologists, Inc. A copy of said letter is included in this second amendment. COMPENSATION Compensation for the performance of the additional work shall be made on a time and expense basis at Consultant's customary fees. Expenses shall not exceed a maximum total cost of $25,266. SHN CONSULTING ENGINEERS AND GEOLOGISTS, INC. BY: �L THOMAS M. HERMAN PRINCIPAL DATE Amendment No. 2 to Agreement for Professional Consulting Services CITY OF UKIAH BY: SAG "SA ' CITY MANAGEfR a - --)a -I� DATE CONSULTING ENGINEERS & GEOLOGISTS, INC. 335 S. Main St.• Willits, CA 95490-3977. 707/459-4518 • FAX 707/459-1884 • willitsinfo@shn-engr.com Reference: 416056.100 August 30, 2016 Richard Seanor Via email: rseanor@cityofukiah.com Deputy Public Works Director 300 Seminary Avenue Ukiah, CA. 95482 Subject: Engineering Services Contract Amendment - North State Street Intersection and Storm Drainage Improvements - Low Gap Road/Brush Street Dear Mr. Seanor: Under your direction and discussion with Tim Eriksen, Public Works Director, we are submitting an estimate to amend to our existing engineering services agreement for the preparation of construction plans, contract documents, and to provide assistance during bidding for the subject North State Street Intersection Improvements. We have been directed to 1) add an ADA accessible ramp on the existing southwest curb return, 2) design a complete ADA ramp with a new 35 foot radius curb return for the southeast corner, and 3) design frontage improvements along the south side of Brush Street from North State Street to the end of the existing sidewalk improvements across from the intersection with Mazzoni Street and within the right of way previously purchased by the City of Ukiah. These new frontage improvements include retaining walls, driveways, new utility stubs for future development of the adjacent parcel, and special foundation support for the existing structure which will be effected by the widening and construction of the Brush Street improvements. The widening of Brush Street will allow for a left turn lane with reasonable stacking distance and safer vehicle and pedestrian flow on Brush Street. These improvements will also facilitate a full left turn traffic signalization of the intersection. A new traffic signal pole with an overhead mast will be added to the southeast corner of the intersection. A complete left turn arrow signal plan is being prepared for the intersection. In addition, we are redesigning the storm drains for the intersection to include all four corners of the intersection and to accomplish the full abandonment of the existing steel culverts which have been found to be failing. Due to the number of existing underground utilities crossing this intersection, the design of the storm drain is complicated and will be very deep to pass under the existing utility piping. We are setting up the plans and contract documents to bid this work as one project but will phase the construction work. Phase One would be performed as soon as the project can be bid and awarded this fall because of the importance of rebuilding the storm drain that was severed to construct the new sewer main in North State Street. During the sewer main construction, it was noted that the existing steel storm drains crossing State Street were all perforated with rust holes. During the construction of the new storm drain, it is anticipated that new curb returns would be constructed along with the relocations of existing traffic poles and installation of new poles and traffic signal modules to create left turn arrows in all directions. It is important that the storm drainage work be performed as a first priority along with the other associated improvements, \ \ Willits\ projects\ 2016\416056-N.Statelntx\ 100-South-RofW-Br\ PUBS\agr\20160830-ServAgrAmendmt_3.docx Richard Seanor Engineering Services Contract Amendment - No. State St. Intersection & Storm Drainage Improvements - Low Gap Rd/Brush St. August 30, 2016 Page 2 unless a temporary alternative can be installed. We would then suggest that after the storm drains, curb returns, the shoulder construction adjacent to the new curb returns, and the signalization work and Phase One street striping is completed that work be suspended until spring. In the spring, Phase Two construction would resume to address the improvements along the Brush Street frontage, reconstruction of the structural section of Brush Street together with pavement rehabilitation in State Street and Low Gap Road and in the intersection. Once the new pavement rehabilitation and reconstruction is completed, the Phase Two striping plan would be applied for a finished project. We anticipate having 95% of plans and contract documents ready for the City of Ukiah staff to review during the week of September 6, 2016. We assume that some minor revisions may be necessary after review by staff and we would then prepare a final set of plan and contract documents as quickly as possible, signed by a California Registered Civil Engineer and submitted to the City of Ukiah. We will provide the City ten (10) full-size sets of plans together with PDF files of the same. We will also provide three (3) sets of bound Contract Documents, a Word document file and a PDF file of the Contract Documents. We will prepare an Engineer's Opinion of Cost for the proposed improvements. Providing the City with assistance during bidding to help answer contractor questions as needed and preparing a bid tabulation of the submitted bids will also be performed. Our estimated amendment to the engineering services agreement which includes providing the aforementioned services, final signed plans for bidding, and bidding assistance is $25,266. Sincerely, SHN Consulting Engineers & Geologists, Inc. g 'A y Thomas A. Hunt, PE Senior Civil Engineer Project Manager TAH: amg \\Willits\projects\2016\416036-N.Statelntx\100-South-RofW-Br\PUBS\agr\20160830-ServAgrAmendmt_3.docx � /I�-/