HomeMy WebLinkAboutTask Order No. 2.7 with CH2M HILL for CEPT and Centrate Drain RevisionsTASK ORDER N0.2.7
UNDER THE
MASTER AGREEMENT FOR PROFESSIONAL SERVICES
~ ~ y~./ ~I ~I~
CITY OF MERIDIAN AND CH2M HII.L, INC.
This Task order is entered into by and between City of MERIDIAN (OWNER) and CH2M HII L, Inc.
(ENGINEER), according to the terms and conditions of the Master Agreement (AGREEMENT) for
Professional Services, dated January 1, 2t~7.
See Attachments A and B for the Scope and Fee for Task 2.7
All other terms and conditions of the original agreement will remain in full force and effect.
IN WITNESS WHEREOF, the pasties execute below:
For CH2M HILL, Inc.
dated y of
By
Name
For City of Meridian
dated this a3taf_=
y: ~~ ~~G1~
~ ~`ammy eerd, Mayor
Jaycee Hol{~an City
Approved By City Council:
i'~'~
Title
2008.
,,
~ ~~, .
~o
SISAL
~ ~'
!~!lryil M It11N~~~
Task Order 2.7
Attachment A
Chemically Enhanced Primary Treatment (CEPT) Chemical Feed
and Centrate Drain Revisions
Project Understanding
Based on the meeting held on August ?2, 2Q08, CH2M HILL is to provide a technical
memorandum outlining the path forward for chemical feed to support the CEPT process. In
addition, the centrate drain bypass is not working properly and needs redesign for it to
properly drain.
Scope of Work
CHZM HILL will perform the three tasks as outlined below. SCADA programming is not
part of this contract.
Task 1 Prepare the CEPT Chemical Feed Technical Memorandum
The technical memorandum will recap the ferric chloride test results. Two chemical feed
options will be analyzed:
• Use Aluminum Sulfate (alum) for CEPT, with Femc Chloride for H2S control in the
digesters
• Use Aluminum Sulfate for CEPT, with Ferric Chloride for H2S control in the digesters,
and a nonvnal dosage of Ferric Chloride in the headworks for H2S control
Both options will jointly use alum for filter coagulation. The advantages and disadvantages
of each option will be discussed. These include:
• Costs, capital and Operations and Maintenance (08rM),
• ability to control odors,
• safety of handling and storage,
• ability to remove phosphorus and control struvite.
Recommendationswill bemade regarding pilot testing requirements, chemical dosage
points, and benefits expected from each chemical feed option.
Once reviewed and approved by the City, this memorandum should be submitted to IDEQ
for approval.
Task 2 Centrate Drain Revisions
CH2M HILL will verify field elevations of the existing centrate drain and bypass system,
and a hydraulic profile will be developed. A determination will be made if the drain system
can be drained by gravity, or if a pumped system is required. Improvements will be
designed, and the design will consist of 1 to 2 sheets in order to obtain a quote from a
contractor on site.
Task 3-Project Management
Project management will consist of:
• Supervising project staff,
• holding consultant staff coordination meetings as required,
• documenting meeting decisions and action items,
• assigning activities to team members,
• monitoring project progress, including work completed, work remaining, budget
expended, schedule, estimated cost of work remaining, and estimated cost at
completion,
• monitoring project activities for potential changes, anticipating changes when possible,
and with Owner approval, modifying project tasks, budgets, and approach,
• preparing and submitting a monthly billing with backup documentation,
• performing project quality control reviews of deliverables on this project.
Attachment B
Compensation
Level of Effort
The task level of ef#ort estimates aze summarized in the following table. CH2M HILL has
developed this level of effort estimate based on the work plan presented herein and
assumptions stated previously. The fees will be billed as time and material, and will not
exceed the total amount below without prior approval by the City.
Level of Effort
Task Description Total Taak
1 Chemical Feed memorandum $6,065
2 Centrate l?rain Revisions $2,184
3 Protect Management $7,937
Summary -All Tasks $16,186
All work will be completed and costs will be billed in accordance with the Master Service
Agreement dated January 1, 2007.
Schedule
Task One and Two can be completed in parallel and within 2 weeks of the notice to proceed.
CH2M HILL is prepazed to proceed without a signed contract if written authorization (letter
ore-mail) to proceed is received.