HomeMy WebLinkAboutGHD, Inc. 2008-10-16; Amendment 2 2012-02-21CITY OF UKIAH
AMENDMENT NO. 2
TO AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES
DATED OCTOBER 16, 2008
TERMS AND CONDITIONS
All terms and conditions of the Agreement for Professional Consulting Services dated
October 16, 2008 shall remain in force and effect except as modified by the first and this
second amendment.
AUTHORIZATION
Upon execution of this amendment, service provider is authorized to provide the service
described under the Scope of Additional Work.
SCOPE OF ADDITIONAL WORK
Work authorized by this amendment shall include that work described in the
Exhibit A, Amendment 2 Scope of Services from GHD, Inc received February 21, 2012
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 $17,400.
GHD,
BY:
DATE"
CITY OF UKIAH
BY:
JANE CHAMBERS
ity Manager
DATE
Amendment No. 1 to Agreement for
Professional Consulting Services
Office Manager
1
Exhibit A
Scope of Services
Nitrate Engineering Study
Amendment 2
The City of Ukiah (City) has filed a Report of Waste Discharge with the North Coast Regional Water
Quality Control Board (Regional Board) to support renewal of its NPDES permit. Currently the City
disposes of treated effluent to the Russian River during winter months and to percolation ponds during
summer months. As part of this effort, Consultant prepared an Ammonia Infeasibility Study. The Ammonia
Infeasibility Study documents a series of steps that the City will take to bring its effluent into compliance
with anticipated permit limits for ammonia and nitrate. Complying with permit limits is necessary to allow
the City to continue its current operation and to increase its allowable wintertime discharge rate. It is
anticipated that the steps and time schedule included in the Ammonia Infeasibility Study will become part
of the "compliance schedule" included in the City's renewed permit.
This amendment covers the initial phases of the ammonia/nitrate compliance schedule which includes
preparation of a Work Plan for the Preliminary Assessment Report for Ammonia and Nitrate Compliance
for approval by the Executive Officer of the North Coast Regional Water Quality Control Board. The Work
Plan will outline in detail the activities and deliverables involved in:
• assessing the ability of the City's Wastewater Treatment Plant (WWTP) to convert or remove
ammonia and nitrate
• developing operational strategies for improving the WWTP's ability to remove ammonia and
nitrate
• assessing the ability of offset or mixing zone programs to assist the City is complying with
discharge limits for ammonia and nitrate; and
• developing and assessing alternatives for upgrading the WWTP process in order to meet permit
limits for ammonia and nitrate.
Consultant will develop a draft Work Plan and submit any additional information, clarifications, and
analyses as needed to satisfy the Regional Board. Based on the approved Work Plan, additional
engineering tasks and budgets will be brought forward for the City's consideration in order to implement
the plan.
Deliverables: Draft Work Plan for Regional Board approval
Final Work Plan incorporating Regional Board comments
Proposed Additional Fee for Amendment 2: $17,400
oo Inc.
2235 Mercury Way Suite 150 Santa Rosa CA 95407 USA
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