LINDA R. DORRELL PURCHASING~~ ~ AMENDMENT #4- PROFESSIONAL ENGINEERING SERVICES-DEWBERRY ENGINEERS, INC.

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1 TULSA COUNTY PURCHASING DEPARTMENT MEMO DATE: JUNE 24,2015 FROM: TO: SUBJECT: LINDA R. DORRELL PURCHASING~~ ~ BOARD OF COUNTY COMMISSIONERS AMENDMENT #4- -DEWBERRY ENGINEERS, INC. SUBMITTED FOR YOUR APPROVAL AND EXECUTION IS THE ATTACHED AMENDMENT #4 TO THE PROFESSIONAL ENGINEERINGS SERVICES BETWEEN THE BOARD OF COUNTY COMMISSIONERS ON BEHALF OF THE TULSA COUNTY ENGINEERING DEPARTMENT AND DEWBERRY ENGINEERS, INC. ORIGINALLY EXECUTED ON AUGUST 20, 2007, CMF# THIS AMENDMENT IS TO EXPAND THE SCOPE FOR GARNETT ROAD, 81ST STREET TFll~OUGH 101ST STREET. RESPECTFULLY SUBMITTED FOR YOUR APPROVAL AND EXECUTION. LRD arh ORIGINAL: COPIES: PAT KEY, COUNTY CLERK, FOR JUNE 29, 2015 AGENDA. COMMISSIONER JOHN M. SMALIGO COMMISSIONER KAREN KEITH COMMISSIONER RON PETERS MICHAEL WILLIS, CHIEF DEPUTY VICKI ADAMS, CHIEF DEPUTY TOM RAINS, DIRECTOR, ENGINEERING Form 4363 (Rev. 4-98)

2 to This AMENDMENT NO. 4 to Agreement Professional Engineering Services is made and entered into this day of, 2015 between Tulsa County in the State of Oklahoma, hereinafter referred to as COUNTY, and Dewberry Engineers Inc., hereinafter referred to as ENGINEER; WITNESSETH: WHEREAS, COUNTY and ENGINEER entered into an dated August 20, 2007, under which the ENGINEER was to provide professional engineering services in connection with the PROJECT; and WHEREAS, COUNTY requires additional professional design services in connection with the PROJECT, hereinafter referred to as the AMENDMENT NO. 4, and WHEREAS, funding is available payment of the ENGINEER providing the additional services under this AMENDMENT No. 4. NOW THEREFORE, in consideration of the promises contained herein, the parties hereto agree to amend the Agreement as follows: 1.0 SCOPE OF PROJECT: The scope of this PROJECT as described in Attachment A, SCOPE OF PROJECT shall be amended as described in Attachment A-3, which is attached hereto and incorporated, by reference as part of this AMENDMENT. 2.0 SERVICES: ENGINEER shall perm the SERVICES described in Attachment B-3, SCOPE OF SERVICES, which is attached hereto and incorporated by reference as part of this AMENDMENT. 3.0 COMPENSATION: the COUNTY and the ENGINEER agree that the ENGINEER shall be compensated these additional services in accordance with Attachment D-3, COMPENSATION FOR ADDITIONAL SERVICES, which is attached hereto and incorporated by reference as part of this AMENDMENT. Page 1 of

3 As set th in the, AMENDMENT No. 1, 2, 3 and No. 4 the total maximum billing amount is Three Hundred Sixty One Thousand Eight Hundred Six Dollars and 32 cents ($361,806.32), which amount shall not be exceeded without further written authorization by the COUNTY. Cost Execution Date $276, August 20, 2007 AMENDMENT No. 1 $34, June AMENDMENT No. 2 $7, February 11, 2013 AMENDMENT No. 3 $9, May 15, 2014 AMENDMENT No. 4 $34, Total Maximum Billing $361, (Balance of This Page Left Intentionally Blank) Page2of

4 IN WITNESS WHEREOF, the parties have executed this AMENDMENT No. 4 in multiple copies on the respective dates noted herein, said AMENDMENT to be effective on the date executed by the Chairman of the Board of County Commissioners. (SEAL) ATTEST: Tulsa County, Oklahoma Board of County Commissioners County Clerk Chairman Date APPROVED AS TO FORM: 4~ 3~c4fl Assis nt District Attorney 4 i ATj~EST. (Seal) S Dewberry Engineers Inc. Assistant Secretary,0 I Craig S. ~ /- ngle, P.E., As~ ciate Vice President State of Oklahoma ) County of Tulsa ) SS Subscribed and sworn to bee me on the My Commission Expires: oq-. - day of S ~ Notary Public,2015. Page 3 of

5 To For For SCOPE OF PROJECT ATTACHMENT A-3 A. SCOPE OF PROJECT: The PROJECT as covered by the original Agreement dated August 20, 2007, between COUNTY and ENGINEER consists of improving Garnett Road from a rural, two-lane asphalt roadway to an urban five-lane asphalt street from 8Vt Street to 915t Street and a four-lane asphalt street from 91st Street to 1015t Street. Amendment No. 1 to the original agreement includes modifications to the sidewalk and storm drainage system designs to accommodate AEP/PSO utility relocations; modifications to the drainage design to accommodate future development on property adjacent to the roadway and owned by the Warren Foundation; and separating the original project into two separate bid packages one the roadway north of g1st Street and the other south of g1st Street. Amendment No. 2 to the original agreement includes the design and preparation of plan sheets the relocation of approximately 2,400 linear feet of City of Tulsa 12 waterline in conflict with the proposed Garnett Road roadway construction. The proposed relocation extends from Station to Station In addition, Amendment No. 2 also provides updating the signal plans to the current City of Tulsa and MUTCD standards. Amendment No. 3 to the original agreement includes the preparation of additional plan sheets required to make the City of Tulsa waterline relocation a separate bid package, complete with bid documents and specifications; attendance at pre-bid meeting, preparation of bid tabulation; and recommendation of award. In addition, Amendment No. 3 includes additional geotechnical investigations a proposed drainage channel south of 915t Street. Amendment No. 4 to the original agreement includes the modification of the S. 1015t Street West Typical Section from a three (3) lane to five (5) lane roadway. Incorporating Warren Property s proposed drainage structure into the plans. Review HEC-HMS models permed by Tulsa County to confirm inputs and results, confirm approach to manage peaks to see if it is an acceptable procedure and method. Review any impacts on the 100 year if any and check lower flood events from 2 year to 50 year and the convergence under the roadways to ensure no impacts or increased flows the events lower that the 100 year. Page 1 of

6 to SCOPE OF SERVICES ATTACHMENT B-3 B. SCOPE OF SERVICES: The services to be permed by the ENGINEER under this Amendment No. 4 shall include: Modify the design of S. lovt Street from a three (3) lane curb and gutter roadway to a five (5) lane roadway west of Garnett road. Incorporate the drainage structure culvert, designed by Warren properties consultant, which run into Oklahoma Turnpike pond into the Garnett roadway plans. Review HEC-HMS models to confirm inputs and results and the approach to manage peaks is an acceptable procedure and method. Review any impacts on the 100 year if any. Check lower flood events from 2 year to 50 year and the convergence under the roadways to ensure no impacts or increased flows the events lower that the 100 year. Analyze the downstream culverts on Garnett Road just north of the intersection of Garnett and E lovt Street and on E 101st Street and incorporate the revised structure size into the roadway plans. Document results in a memorandum to client. Recommend updating HEC RAS model to include the excavated areas. Page 1 of

7 to COMPENSATION FOR ADDITIONAL SERVICES ATTACHMENT D-3 D. COMPENSATION: The COUNTY agrees to pay, as compensation services set th in Attachment B-3 of this AMEMDMENT No. 4, the following compensation, payable monthly as each Phase of the work progresses; and within 30 calendar days of receipt of invoice. ENGINEER shall submit monthly invoices based upon the services actually completed at the time of billing. Invoices shall be accompanied by such documentation as the COUNTY may require in substantiation of the amount billed. D.1 TOTAL COMPENSATION: For engineering services as set th in Attachment B-3 of this AMENDMENT No 4, the total Lump Sum billing the additional services shall be Thirty Four Thousand Dollars and Zero cents ($34,000.00), which amount shall not be exceeded without further written authorization by the COUNTY. The total cost of the contract will be Three Hundred Sixty One Thousand Eight Hundred and Six Dollars and 32 cents ($361,806.32). Cost Roadway Modifications $16, Updates/Revisions to $18, Hydraulic Model and Floodplain Analysis Total Amendment No. 4 $34, Page 1 of