HomeMy WebLinkAboutRau & Associates, Inc. 2009-10-07; Amendment 1 2009-10-30CITY OF UKIAH
AMENDMENT NO. 1
TO AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES
DATED OCTOBER 7, 2009
TERMS AND CONDITIONS
All terms and conditions of the Agreement for Professional Consulting Services dated
October 7, 2009; shall remain in force and effect except as modified by this first
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. 1.
SCOPE OF ADDITIONAL OK
Work authorized by this amendment shall include that only that work related to the design
of mid-block bulb-outs between Washington Avenue and Observatory Avenue described in
the October 29, 2009 letter from Rau & Associates, Inc. A copy of said letter is included in
this first amendment as Attachment "A".
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 $1,808.
U & ASSOCIATES, I NC. CITY OF UKIAH
BY: BY:
George if. Rau ne Chambers
City Manager
DATE DATE
Amendment No. 1 to Agreement for
Professional Consulting Services
Rau & Associates Inc.
GEORGE C. RAU, P.E.
PRESIDENT
JAVIER J. RAU
VICE PRESIDENT
WALTER HAYDON, P.L.S.
ROGER VINCENT, P.E.
CATHY A. McKEON, P.E.
Attachment #
AN ASSOCIATES INC.
CIVIL ENGINEERS - LAND SURVEYORS
October 29, 2009
Mr. Tim Eriksen, Director of Public Works
Mr. Rick Seanor, Deputy Director of Public Works
City of Ukiah
Department of Public Works
300 Seminary Avenue
Ukiah, CA 95482
Job Number R09135
RE: AMENDMENT #1 TO AGREEMENT FOR SERVICES FOR THE PREPARATION OF THE PLANS,
SPECIFICATIONS AND ESTIMATE FOR THE SOUTH DORA REHABILITATION PROJECT
Gentlemen:
Rau and Associates, Inc. (RAU) was requested to provide an additional cost to 1) Design Mid-Block Bulb-
outs at a Cross Walk between Washington Street and Observatory Avenue and 2) Sample and Test Five
Locations along the South Dora Street Route for R-Values and Calculate the Required Structural Section.
Project Description:
Design of Mid-Block Bulb-outs between Washington Street and Observatory
The project included design of a pair of ADA compliant ramps at mid-block between Washington Street
and Observatory Avenue. Upon reflection, the City is of the opinion that "bulb-outs" to the edge of the
bike lane will provide significant safety enhancement to pedestrians since they will be protected by a curb
and change in appearance until they reach the edge of the bike lane where they will be much more visible
to motor vehicles and bicyclists.
The scope of work is increased since curb returns out to the edge of bike lane are required to be
designed as well as two drainage structures to carry the gutter flow through the bulb-out. The drainage is
desired to be in a channel which is readily accessible for maintenance, but is covered with an ADA
compliant grate or other cover which can be removed easily for maintenance.
The additional cost to perform this design and include it in the PS&E required under the agreement for
services is estimated to be $1,808.
Structural Section Evaluation
The additional work is to sample five locations, approximately equally spaced, at approximately 300 foot
intervals, over the 1800 linear feet of project. The sampling will be accomplished as scheduled repairs by
City Crews at service laterals into the sanitary sewer main. City Crews will be opening up a pit to make
the repair and RAU will simply coordinate its work to be available at the scheduled time to sample the
underlying soil and to document the amount of base thickness at each location. The work is intended to
confirm that grinding 5-inches of existing surfacing and replacing it with 5-inches of asphalt concrete
pavement will provide for a Traffic Index (TI) of 8.0 after it is complete. Since there is no documentation
as to the existing structural section, direct observation is the only way of obtaining this information.
A brief letter report will be done upon completion of the analysis, with recommendations to allow the
design to go forward as planned or to add additional remediation in areas where the appropriate TI
cannot be achieved with the planned work.
100 NORTH PINE STREET - P.O. BOX M - UKIAH, CALIFORNIA 95482 - 707-462-6536 - FAX 707-463-2729
WWW.rauandassoc.com
Mr. Tim Eriksen, Rick Seanor, October 29, 2009 Page 2
RAU will have Taber Consultants of West Sacramento perform the actual R-Value tests in their
laboratory. The additional cost to perform the tasks related to the structural section evaluations is $3,065.
The total additional cost for the work described as Amendment #1 is $4,873. Task-hour breakdowns are
included as attachments. The total authorized not-to-exceed amount after Amendment #1 is approved
will be $18,081 + $4,873 = $22,954.
Schedule:
The mid-block bulbouts will be included into the PS&E schedule previously agreed upon. The R-Values
will be taken as the City Crew Schedule permits. If there are differences in the planned structural section
and what is recommended after the evaluation, the project plans will be amended as soon as possible
after the evaluation is completed.
Very truly yours,
Attachment:
Task-Hour Summary
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George C. Rau, P.E.
Registered Civil Engineer 21908
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