2012/02/28 City Council Resolution 2012-21.RESOLUTION NO. 2012-21
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ROHNERT PARK
AUTHORIZING AND APPROVING AN AGREEMENT WITH CLEARWATER
HYDROLOGY FOR DESIGN SERVICES FOR THE NORTHEAST SPECIFIC PLAN
WHEREAS; the City entered into an agreement to obtain engineering peer review
services for hydrology reports related to the University District Specific Plan on February 25,
2011; and
WHEREAS, the City amended this agreement based on an expanding scope of work on
both June 2, 2011 and August 25, 2011;
WHEREAS, the City desires to expand this agreement to include engineering peer review
services for the Northeast Specific Plan including review of possible flood mitigation measures;
WHEREAS, Design Professional hereby represents to the City that Design Professional
is skilled and able to provide such services.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Rohnert
Park,that it does hereby authorize and approve an agreement by and between Clearwater
Hydrology, a California sole proprietorship, and the City of Rohnert Park, a municipal
corporation, for engineering peer review services in connection with Northeast Specific Plan.
BE IT FURTHER RESOLVED that the City Manager is hereby authorized and
directed to take all actions to effectuate this agreement for and on behalf of the City of Rohnert
Park, including execution, if necessary, in substantially similar form to the agreement attached
hereto as Exhibit "A," subject to minor modifications by the City Manager or City Attorney.
DULY AND REGULARLY ADOPTED this 28th day of February, 2012.
CITY OF ROHNERT PARK
Mayor
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AHANOTU: AYE BELFORTE: AYE CALLINAN: AYE STAFFORD: AYE MACKENZIE: AYE
AYES: (5) NOES: (0) ABSENT: (0) ABSTAIN: (0)
THIRD AMENDMENT TO THE DESIGN PROFESSIONAL SERVICES AGREEMENT
WITH CLEARWATER HYDROLOGY
FOR DESIGN SERVICES FOR THE NORTHEAST SPECIFIC PLAN
This Third Amendment to the Agreement between the City of Rohnert Park ( "City ") and
Clearwater Hydrology ( "Design Professional ") for additional peer review services ( "Third
Amendment ") is entered into as of the 16"L'� day of (g ru Et✓ 2012,
( "Effective Date "), by and between City and Design Professional.
RECITALS
A. City and Design Professional are parties to that certain Agreement for Services for the Vast
Oaks Grading Phase 2 dated February 25, 2011 ( "Agreement ").
B. City and Design Professional now desire to enter into this Third Amendment to provide for
additional work as described below.
AGREEMENT
NOW, THEREFORE, in consideration of the following mutual promises, the parties hereby
amend the Agreement as follows:
1. Scope of Services. In addition to the services provided under the Agreement, Design
Professional shall provide additional services, including but not limited to, the review of
hydrologic and hydraulic analyses and related modeling of flood control elements; review of
on -site grading and drainage plans; review of stormwater facilities designs and plans and LID
features; preparation of technical memos regarding peer review findings; preparation of
letters of design acceptance; and attendance at additional meetings requested by the
developer as further described in the attached Exhibit A.
2. Compensation. Design Professional shall perform the services described in this Third
Amendment for total not to exceed amount of $39,894.
3. Agreement in Effect. Except as amended by this Third Amendment, the Agreement shall
remain in full force and effect.
4. Counterpart Signatures. This Third Amendment may be signed in multiple counterparts
which, when signed by all parties, shall constitute a binding agreement.
IN WITNESS THEREOF, the parties have executed this Third Amendment as of the date first
written above.
CITY OF ROHNERT PARK:
Gabriel A. Gonzalez, City Nranager (Date)
Per Resolution No. 2012-01j__ adopted by the Rohnert
Park City Council at its meeting of February 28, 2012.
A( TEST:
Deputy City Clerk
O D
City Attorney
CLEARWATER HYDROLOGY:
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Updated: 2009 -10 -20
M:\Consultants\ClearwaterHydrology\Clearwater Hydrology Third Amendment—Draft Agreement.doex
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HDROLOGY
Consoitants in flgdrologq
and Iter Resources
Feb. 14, 2012
Darrin Jenkins, P.E./Pat Barnes, P.E.
Developmental Services
City of Rohnert Park
130 Avram Ave.- Second Floor
Rohnert Park, CA 94928
RE: Proposal for Additional Peer Review Hydrology Consulting on Proposed
Rohnert Park Development Projects: Northeast Specific Plan
Gentlemen,
Clearwater Hydrology (CH) has exhausted the funding provided by Amendment No. 2
for the Vast Oaks- Phase 2 Grading Plan peer review which was approved by the City on
Lldtershed Mana ?ement Aug. 25, 2011. As you know, CH is no longer providing peer review services on the Vast
Oaks- Phase 2 Grading Plan project, so this third contract amendment proposal covers
only the anticipated peer review work on the Northeast Specific Plan project.
Stream and tBetland Since the NESP subdivision hydrologic and hydraulic design will contain many of the
same components as those proposed for the Vast Oak- Phase 2 project, we expect that the
Restoration tasks associated with the engineering hydrologic peer review could include one or more
of the following:
1. Attendance at meetings requested by the City, with City staff and engineering
JJetland Delineation consultants representing the project.
and Permit �rquisition 2 Review of hydrologic and hydraulic data, including rainfall, soils, land use and
groundwater data, and related analyses, including computer modeling (e.g. HEC -HMS,
HEC -RAS, TR -55 or other) of peak flows, flood hydrographs, flood water surface
profiles, culverts, bridges and other stormwater or flood control elements.
StormuterDraind?e
and 1loodin? 3. Review of on -site grading and drainage plans, stormwater facilities (including
detention storage features) designs and plans, and low impact development (LID) features
designed to counter the effects of hydromodification.
4. Preparation of a letters of certification to the City regarding potential flooding impacts
associated with development on the peer- reviewed projects.
To date, CH has attended a preliminary NESP project meeting at the City offices, held on
Oct. 28, 2011. The time expended for this meeting is incorporated into this contract
amendment budget proposal. Based on our recent discussions regarding the project's
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initial modeling assessment, the City is interested in a detailed analysis of the NOAA
precipitation data used by both the NESP and Vast Oaks project flood hydrograph
analyses in order to verify the validity of the design rainstorms used, as well as the
compatibility of the rainfall -runoff assumptions applied in each case. Thus, the current
proposed budget incorporates time for this assessment, which may include some
discussions with City staff and Larry Gossett, the City's current peer reviewer for the
Vast Oaks project. In addition, the budget covers the expected time required to review
three iterations of NESP design submittals and a 15% contingency. Implicit in the
estimate is the assumption that the first submittal and rainfall assessment will require
more review effort, with progressively less time required for subsequent submittals.
CH assumes that previously established protocols for CH technical interaction with
project engineering consultants will continue to apply. Thus, while direct contact will
occur between these consultants and CH, we will continue to copy the City in all written
and email correspondence. At each stage of the review and assessment, CH will update
the City regarding any concerns about lack of missing data or analyses, technical
sufficiency, or other pertinent questions requiring clarification by the applicant's team.
Once all project submittals have been reviewed and deemed sufficient to address
potential project impacts on flooding (or related issues such as downstream sedimentation
and its impact on drainageway or hydraulic structure capacities) along affected reaches of
streams within the City's jurisdiction, CH will prepare letters attesting to the adequacy of
the project designs to mitigate any increases in local and downstream flooding.
Our proposed budget for the above scope of work is $39,894, including expenses, and
based on the assumptions noted above.
If you have any questions regarding this Amendment 3 proposal, please give me a call to
discuss. We appreciate the opportunity offered by the City to continue providing these
peer review consulting services.
Yours truly,
WS. - - (,� - L
William Vandivere, P.E.
Principal
RCE #35613
2 (((ARIUUTERMDROIOGY
TASK - SPECIFIC BUDGET FOR ADDITIONAL PEER REVIEW HYDROLOGY
CONSULTING- AMENDMENT 3: CITY OF ROHNERT PARK: NESP
CLEARWATER HYDROLOGY: 2/14/12
Task
Time - hrs.
WV
SN
1. Attend meetings requested by the City. 4 max.
24
24
2. Review of hydrologic and hydraulic analyses and related
modeling of flood control elements.
40
80
3. Review of on -site grading and drainage plans, stormwater
facilities designs and plans, and LID features.
20
40
4. Prepare technical memos re: peer review findings.
12
16
5. Prepare letters of design acceptance, certifying no resulting
increase in flooding due to proposed development proiects .
10
6
6. Adminstration and project management.
1 20
2
Totals =
126
168
CH Labor:
William Vandivere M.S. P.E. Principal
$140/hr. for
126
hrs =
$17,640
Steve McNeely, M.S. EIT Water Res. En r.
$100/hr. for
168
hrs =
$16,800
Total Labor =
$34,440
Expenses:
Travel mileage, computer /phone=
250
CH TOTAL w/o contingency=
$34,690
15% Contingency=
$5,204
CH TOTAL w/ contingency--I
$39,894
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