Task Order No. 10238b with CH2M Hill for WWTP RAS Conveyance System ReconfigurationTASK ORDER NO. 10238b
Under the
MASTER AGREEMENT FOR PROFESSIONAL SERVICES
BETWEEN
CITY OF MERIDIAN (OWNER) AND CH2M HILL (ENGINEER)
This Task Order is made this 13~h day of March, 2012 and entered into by and between the City
of Meridian, a municipal corporation organized under the laws of the State of Idaho, hereinafter
referred to as "City", and accepted by CH2M HILL, hereinafter referred to as "Engineer" pursuant
to the mutual promises, covenant and conditions contained in the Master Agreement (Category
2A) between the above mentioned parties dated December 6, 2011. The Project Name for this
Task Order 10238b is as follows:
Meridian WWTP RAS Conveyance System Reconfiguration
BACKGROUND /PROJECT OVERVIEW
This Project will implement changes to the current Return Activated Sludge (RAS) conveyance
system from the existing Secondary Clarifiers 4 and 5 to the existing Secondary Pump Station
(SPS). The current RAS conveyance system allows for the RAS to gravity flow from Secondary
Clarifier 4 and 5 to the SPS (located immediately upstream of the aeration basins) with free
discharge into the SPS receiving chamber. The free discharge of the RAS into the SPS receiving
chamber is one source of air entrainment at the SPS which promotes growth of the nuisance
microthrix. This RAS Piping Reconfiguration project will reduce the amount of air being entrained
at the SPS by discharging the RAS directly into the four existing aeration basins under anaerobic
conditions. The RAS will be discharged with equal distribution to each of the four existing aeration
basins. The current RAS conveyance system shall be reconfigured to add a new submersible
pump station that will convey the RAS directly to the aeration basins. The new submersible pump
station will be constructed within the existing abandoned (empty) Secondary Clarifier Basin 2
through which the existing RAS piping is currently located. The new wetwell will be designed to be
constructed within the existing concrete basin by removing a portion of the existing basin floor,
excavating to the proper depth, and constructing the new base and vertical walls.
This design will additionally enhance phosphorous removal within the existing aeration basins by
adding a pre-anoxic denitrification process to the new RAS pump station wetwell. The
denitrification zone shall be designed with mechanical mixers to accommodate approximately
50,000 gallons of volume. Approximately 10-percent of the primary effluent will need to be
conveyed from the receiving chamber of the SPS to the new pre-anoxic denitrification basin to
promote the denitrification process.
Flow control will be added to the existing WAS piping to enable monitoring and control the amount
of WAS sent to the two DAFT systems. Anew flow control vault(s) with actuated flow control
valves will be designed in the paved area between the abandoned Secondary Clarifier Basin and
the SPS.
Construction is currently being performed to upgrade the Secondary Clarifier 3, which includes a
new individual RAS pump station and pressure pipe. The new RAS pressure pipe for Secondary
Task Order 10238b Page 7 of 11
Meridian W WTP RAS Conveyance System Reconfiguration
Clarifier 3 has been designed to be sliplined through the existing 14-inch diameter RAS pipe under
the SPS with discharge into the SPS receiving chamber. This new pressure pipe will be re-
designed to discharge into the pre-anoxic denitrification basin along with the RAS from Secondary
Clarifiers 4 and 5. The re-design and re-routing of the new secondary clarifier 3 will be included as
part of this RAS Conveyance System Reconfiguration project by CH2M HILL.
CH2M HILL is currently engaged in delivering a separate task order for fermentation system
improvements. The two projects will be coordinated with the goal of reducing redundancy in piping
and discharge flow control where possible. However, early discussions indicate that the VFAs
may need to be introduced into the aeration basins independent of the RAS to ensure that the
VFAs are available to the phosphate-accumulating organisms (PAOs) in the aeration basins, and
not consumed by nitrifiers present in the RAS.
PROJECT EXECUTION APPROACH
CH2M HILL will prepare a series of work packages for City advertisement and ultimately contractor
incorporation. Engineering discipline design and work package development will occur
concurrently and follow independent timelines. The following describes the work packages that
are anticipated:
Work Package Description
A Equipment procurement package that will be prepared by CH2M HILL to allow
the City to solicit for pre-purchase of major equipment that will be owner-
furnished for installation by a general contractor selected from Work Package
B. Major equipment anticipated is submersible pumps, pump control panels
and electrical equipment, and mechanical mixers.
B A construction work package will be issued for competitive bidding by Idaho-
licensed contractors. This work package will include 100% complete design
bid documents.
SCOPE OF WORK-KEY ASSUMPTIONS
This Scope of Work does not include services during construction or equipment automation /
integration into the plant's control system. This will be a future task order.
2. Workshops and work product City review meetings will be held at the WWTP.
3. The design will be based on the federal, state, and local codes and standards in effect on the
date of the authorization to proceed. Any changes in these codes may necessitate a change in
scope. The design work does not include modifying existing facilities to bring them up to current
codes.
4. No environmental or sensitive areas permitting work is anticipated to be necessary for this
project and none is budgeted. If any investigation and remediation of possible hazardous
waste, asbestos, lead paint or other types of contamination is necessary City shall execute
those tasks or assign them to Consultant via contract amendment.
5. DC Engineering, Inc. will be a subcontractor to CH2M HILL for electrical engineering services.
Task Order 70238b Page 2 of 71
Meridian WWTP RAS Conveyance System Reconfiguration
6. Geotechnical engineering design criteria will be based on review of historical geotechnical
investigation reports that have been prepared for previous WWTP projects in close proximity to
this project. The City will provide hardcopies and/or digital copies (Word or PDF format) of
historical geotechnical investigations performed for previous WWTP projects for use by CH2M
HILL geotechnical engineering staff to prepare design criteria for this project. It is assumed
that the conditions are known to an adequate depth to make estimates of settlement and
bearing resistance. Subsurface geotechnical exploration(s) will not be performed as part of this
project
The City Purchasing Department will be responsible for administering bid solicitations for
equipment pre-purchase procurement(s) and general construction contractor selection. CH2M
HILL will provide the City with technical specification sections including General Requirements
(Division 01 ). CH2M HILL standard master specifications will be used as the basis for technical
specifications, including CH2M HILL standard Division 1 documents. The specifications for the
project will be the current 49 division version of CH2M HILL's master specifications. The City
will be responsible for producing Division 00 specification sections including Procurement
Requirements and Contracting Requirements.
8. Submission of sealed plans, technical specifications, and other support documents as required
by required by Section 420 of IDAPA 58.01.16-Wastewater Rules will occur as part of the
completion of Work Package B.
9. The City will be responsible for document reproduction services. CH2M HILL has not included
budget to cover the expense of reproduction costs for any of the work products and/or
deliverables denoted in this Task Order.
10.This scope of work includes permitting review by DEQ only as required by IDAPA 58.01.16-
Wastewater Rules. No other permitting requirements are included or budgeted as part of
CH2M HILL services and will be performed by the City. If requested, CH2M HILL will include
additional permitting services as part of a contract amendment.
11.Any Cost opinions or project economic evaluations provided by CH2M HILL will be on the basis
of experience and judgment, but because CH2M HILL has no control over market conditions or
bidding procedures, CH2M HILL cannot warrant that the bids, ultimate construction cost, or
project economics will not vary from these opinions.
SCOPE OF WORK -PROJECT TASKS
The critical project phases, along with other critical support responsibilities, are divided into the
following major execution tasks:
• Task 1 -Project Initiation and Management
• Task 2 -Quality Assurance /Quality Control
• Task 3 -Project Chartering and Site Visit
• Task 4 -Preliminary Engineering
• Task 5 -Design and Work Package Preparation
5a -Work Package A Preparation
Task Order 10238b Page 3 of 11
Meridian W WTP RAS Conveyance System Reconfiguration
5b -Design and Work Package B Preparation
• Task 6 -Bid and Award Phase Services for Work Packages A and B
A list of the anticipated drawings that will be produced by the design team as part of Task 5
activities is included as Attachment A to this Task Order. Each task is described in more detail
below.
Task 1 - Proiect Initiation and Management
CH2M HILL will provide the resources necessary for project initiation and management throughout
this phase of the project, including:
• Scoping, contract review/execution, and project accounting setup.
• Prepare a Health & Safety Plan for onsite work activities and obtain staff endorsement.
• Prepare a Quality Management Plan for work tasks and ensure adherence by Team project
staff.
• Supervise and manage design team project staff for execution of work tasks.
• Provide contract administration and oversight of project subconsultant(s).
• Project documentation and coordination.
• Monitor project progress, including work completed, work remaining, budget expended,
schedule, estimated cost of work remaining, and estimated cost at completion. Coordinate with
and provide periodic updates to the City's Project Manager.
• Monitor project activities for potential changes, anticipate changes when possible, and with City
approval, modify project tasks, budgets, and approach.
• Prepare and submit monthly billing with a brief description of the work completed during that
billing cycle.
• Manage the quality control review of all work activities and project deliverables. Identify senior
technical staff for the various technical disciplines and oversee the adherence to the plan
during the execution of the work tasks.
Deliverables
• Periodic written project design schedule updates to keep the City's Project Manager informed
as to the changes to the initial schedule outlined in this Scope.
• Monthly project invoice statements with a brief description of the work performed.
Task 2-Quality Assurance/Quality Control
An internal QA/OC review for each phase of the project will be performed by senior reviewers in
the disciplines represented on the Project. Comments will be documented and categorized into
major, minor, and preferential comments. Comments will be responded to by CH2M HILL design
team members and adjudicated prior to each deliverable being submitted to the City or IDEO.
Task Order 10238b Page 4 of 11
Meridian W WTP RAS Conveyance System Reconfiguration
The QA/QC process will be defined by the Team in a Quality Management Plan (QMP) that will
include the following major components:
• Definition of Key Project team member and their role in the Project,
• Definition of the Project core technologies,
• Identification of the Project Quality Manager,
• The Team staff member responsible for quality control for each discipline used in the Design,
and
• The milestone dates for each discipline review.
Task 3 - Proiect Charterina and Site Visit
CH2M HILL will lead a project chartering session with the City, the CH2M HILL design team leads,
and other project stakeholders. Chartering is a structured process used to guide the project team
through defining itself in terms of its purpose, critical success factors, goals, roles and
responsibilities, operating guidelines, and other elements that give the team clarity of purpose
essential for high-quality performance.
The agenda for the project chartering session may include the following:
• Introduction of stakeholders and team counterparts
• Further review of the key performance indicators (KPIs) discussed initially as part of scope
development
• Review execution strategy, the 2 planned work packages, and expected level of detail
• Review schedule and agree on key milestones
• Define roles and responsibilities between team members
• Review the decision making process to allow timely decisions at the lowest appropriate level.
Establish decision making protocol
• Communications and reporting - (meetings, reports, SharePoint site)
• Budget -agree on capital budgets for each work package
• Change management process
• Agree on how the chartering document will be used and monitored throughout the execution of
the project
• Review project design criteria
Following the project chartering session, the design team leads will conduct a site reconnaissance
visit to observe field conditions, obtain photographs, gather data /dimensions of key elements, and
begin to formulate solutions to the design challenges.
Deliverables
• Draft Chartering Document provided to City PM as a PDF for distribution.
• Updated Chartering Document based on comments /revisions agreed to during the chartering
session provided to City PM as a PDF for distribution.
Task Order 10238b Page 5 of 11
Meridian W WTP RAS Conveyance System Reconfiguration
Meetings
• One project chartering session as described
Assumptions
• Project chartering session will be conducted at the earliest date possible following City-issued
Notice-to-Proceed that accommodates project stakeholders schedule demands. The session
will be performed at the WWTP meeting room. Up to 9 members of the design team will
participate in the project chartering session either in person or via telephone. The meeting is
not anticipated to extend beyond 2 hours.
• CH2M HILL PM and City PM will be responsible for coordinating scheduling of the meeting with
key participants within their respective organizations. The City PM is responsible for
identification and participation of key City personnel within the Public Works Department,
Purchasing Department, etc. and other project stakeholders critical to the success of the
project.
• Up to 8 members of the design team will participate in the site reconnaissance visit, which is
not anticipated to extend beyond 2 hours.
Task 4 - Preliminarv Enaineerin
CH2M HILL will perform preliminary engineering on portions of the project critical to defining the
overall design approach and establishment of major equipment performance criteria. As part of
the preliminary engineering, CH2M HILL will prepare concept drawings depicting the overall design
approach. CH2M HILL will provide the City with digital versions (PDF, 11"x17") of the. conceptual
drawings for review and endorsement.
CH2M HILL will prepare a Class 3 construction cost estimate based on the draft concept drawings
developed as part of this task concurrent with the City and internal design team OC reviews.
As required by Section 411 of IDAPA 58.01.16-Wastewater Rules, CH2M HILL will prepare a
Preliminary Engineering Report (PER) to document the proposed upgrade to the WWTP. The
PER will include the concept drawings, design criteria, and other relevant information as required
by -DEQ. CH2M HILL will provide the City with a draft PER for review and endorsement prior to
submission to DEQ. CH2M HILL will schedule a meeting with DEQ to coincide with submission of
the PER to discuss the project with DEQ staff in an effort to determine potential complications with
proceeding with subsequent work package development.
Deliverables
• Summary of design and equipment performance criteria (Criteria Summary)
• Draft drawings of the overall design concept (Draft Concept Drawings)
• Class 3 construction cost estimate
• Revised drawings of the overall design concept following receipt of City review comments
(Revised Concept Drawings)
• Draft Preliminary Engineering Report
• Revised Preliminary Engineering Report following receipt of City review comments for
submission to DEQ
Task Order 102386 Page 6 of 11
Meridian WWTP RAS Conveyance System Reconfiguration
Meetings
One review meeting with the City project team and up to 7 design team members to discuss
concept drawings and overall design approach. The meeting is not anticipated to extend
beyond 3 hours.
• One project introduction meeting at DEQ to be attended by 2 design team members.
Assumptions
The deliverables produced as part of this Task will be provided electronically (PDF) to the City
PM for distribution.
• The City will review the Criteria Summary, Draft Concept Drawings, and Draft Preliminary
Engineering Report and provide comments within three days of receipt of the drawings. The
City review comments will be consolidated into one document and transmitted electronically to
CH2M HILL.
The internal QA/QC review of the Criteria Summary, Draft Concept Drawings, and Draft
Preliminary Engineering Report by design team senior reviewers will be performed concurrently
with the City review. Comments received internally and by the City will be jointly addressed to
produce the Revised Concept Drawings and Preliminary Engineering Report. Conflicting
review comments will be resolved between reviewers by the affected discipline lead(s).
Task 5 -Design and Work Package Preparation
The design team will advance the designs and prepare the three work packages as described in
the following subtasks.
5a -Work Package A Preparation
The design team will identify the major equipment that is recommended for pre-purchase by the
City to expedite the design and construction phases of the project. Schedule reduction during the
design phase will be realized once the equipment is selected and the design can then be
performed around the actual equipment rather than a more general design. City pre-purchased
equipment will also eliminate the chance of having to modify construction plans later if alternative
equipment were to be proposed by the general contractor, thus reducing potential construction
delays. Additionally, the overall construction period of performance can be reduced by having
equipment with long order lead times on site and available to the general contractor for installation
earlier than waiting for the general contractor to initiate the purchase.
Following Task 4, CH2M HILL will develop the performance based technical specification sections
to include with the City-led procurement solicitation package.
As stated above, the major equipment anticipated for inclusion in Work Package A is submersible
pumps, pump control panels and associated electrical equipment, and mechanical mixers.
Deliverables
• Draft Technical Specifications, pertinent Division 01 through Division 49 sections, for review by
City
• Final Technical Specifications following review by City
Task Order 10238b
MeridianWwrP RAS Conveyance System Reconfiguration
Page 7 of 11
Meetings
None
Assumptions
The deliverables produced as part of this Task will be provided electronically (PDF) to the City
PM for distribution.
The internal QA/QC review of the Criteria Summary, Draft Concept Drawings, and Draft
Preliminary Engineering Report by design team senior reviewers will be performed concurrently
with the City review. Comments received internally and by the City will be jointly addressed to
produce the Revised Concept Drawings and Preliminary Engineering Report. Conflicting
review comments will be resolved between reviewers by the affected discipline lead(s).
• Drawings or details will not be included as part of Work Package A.
5b -Design and Work Package B Preparation
Following completion of Task 4 Preliminary Engineering, the design team will engage in advancing
the designs for the concrete combination pre-anoxic denitrification basin / RAS pump station
wetwell and the mechanical yard piping. The purpose of this design effort will be to produce Work
Package B bid documents that shall include:
• 100% Complete construction drawings and technical specifications
Final Work Package B products will be provided to the City for administration of the competitive bid
solicitation process to select a qualified general contractor.
CH2M HILL will prepare a Class 1 construction cost estimate based on (90%) construction
drawings and technical specifications and the Preliminary Engineering Report (Task 4). The cost
estimate will be prepared after revisions to the draft documents have been incorporated.
Deliverables
• Draft (90%) Work Package B drawings, technical specifications, and construction cost estimate
for City review
• Final (100%) Work Package B drawings and technical specifications
Meetings
One project check-in meeting with the City project team and up to 4 design team members to
discuss development of Work Package B
Assumptions
• The deliverables produced as part of this Task will be provided electronically (PDF) to the City
PM for distribution.
• The City will review the Draft Work Package B deliverables and provide comments within three
days of receipt of the work products. The City review comments will be consolidated into one
document and transmitted electronically to CH2M HILL.
The internal QA/QC review of the Draft Work Package B by design team senior reviewers will
be performed concurrently with the City review. Comments received internally and by the City
Task Order 10238b Page 8 of 11
Meridian WWTP RAS Conveyance System Reconfiguretion
will be jointly addressed to produce the Final Work Package B drawings and specifications.
Conflicting review comments will be resolved between reviewers by the affected discipline
lead(s).
DEQ review comments to the Task 4 PER submission will be available and incorporated as
part of Work Package B, if not captured at a prior development stage.
DEQ review comments to the final construction documents will be incorporated as a
separately-issued design clarification by CH2M HILL and City-issued Work Change Directive to
the contractor, if necessary.
Task 6 -Bid and Award Phase Services for Work Packages A and B
CH2M HILL will provide bid and award support to the City for each of the work packages as
follows:
Work Packaoe A: The design team will respond to bidders technical. questions and prepare
content for addenda. All bidder questions, responses, and addenda content will be routed through
the City Purchasing Department for official issuance to bidders. Although services during
construction will be performed under a separate task order amendment, CH2M HILL has included
services to review submittal information from the selected suppliers to confirm that the proposed
equipment meet the requirements in the technical specifications.
Work Packaoe B: The design team will respond to technical inquiries posed by prospective
bidders throughout the bid period concerning interpretation of the drawings and technical
specifications. Bidders questions sent to the City Purchasing Department will be routed to CH2M
HILL PM and responses returned to Purchasing for inclusion in bid period addenda. The City will
review responses by the design team prior to issuance of addenda. The budget for responding to
bidders questions is based on an estimated 20 inquiries for a total of 34 hours inclusive of
processing time.
If requested by the City, CH2M HILL will assist the City by participating in a pre-bid conference for
prospective bidders at the project site. The CH2M HILL PM and up to two design leads will attend
the pre-bid conference, which is not anticipated to extend beyond 3 hours.
It is assumed that Work Package B will be bid once.
TIME OF COMPLETION
We understand that the City of Meridian will authorize CH2M HILL to initiate work immediately due
to the fast-track schedule of this project. The following estimated task target completion dates are
based on the assumption that CH2M HILL will begin work on this Task Order on Monday, March 5,
2012. If the actual start date is delayed from the assumed date, the dates indicated below will shift
accordingly. CH2M HILL is committed to performing the work described in this Task Order in an
expedient manner in an attempt to meet the performance expectations of the City but is not
responsible for schedule delays beyond our control. The estimated target dates indicated below
do not constitute a guarantee of task completions.
• Task 1 -Project Initiation and Management: March 2012 through June 2012
• Task 2 -Quality Assurance /Quality Control: March 2012 through June 2012
Task Order 10238b Page 9 of 11
Meddian WWTP RAS Conveyance System Reconfiguration
• Task 3 -Project Chartering and Site Visit: March 6, 2012
• Task 4 -Preliminary Engineering: April 10, 2012
• Task 5 -Design and Work Package Preparation
5a -Work Package A: April 24, 2012
5b -Design and Work Package B: May 31, 2012
• Task 6 -Bid and Award Phase Services for Work Packages A and B: May 2012 through June
2012
COMPENSATION
CH2M HILL will be compensated on an hourly basis for each task, up to but not exceeding the
amounts shown below.
Task
Task 1 -Project Initiation and Management
Task 2 -Quality Assurance /Quality Control
Task 3 -Project Chartering and Site Visit
Task 4 -Preliminary Engineering
Task 5 -Design and Work Package Preparation
Task 6 -Bid and Award Phase Services for Work Packages A and B
Total
FY 2011-2012
$13,500
$950
$7,250
$61,600
$125,850
$10, 700
$219,850
The Not-To-Exceed amount for this Task Order No. 10238b is $219,850.00 (two hundred nineteen
thousand eight-hundred fifty dollars.
The hourly rates for services and direct expenses are per the Master Agreement and by this
reference made a part hereof. No compensation will be paid over the Not-to-Exceed amount
without prior written approval by the City in the form of a Change Order. Travel and meals are
excluded from this Task Order unless explicitly listed in the Scope of Services AND Payment
Schedule.
Task Order 10238b Page 10 of 11
Meridian WWTP RAS Conveyance Syslem Reconrigurelion
CITY OF MERIDIAN
~1
M
TAMMY de RD, MAYOR
Dated: J~ -~ ~.3 ' ~-0~~-
GH2M HILL
BY:
Dated:
Approved by Council: /
~~,ZED A U~~ST
l
Attest ;~ c~° ~ 190
J~`CEEI HOLMAN, CITY CLE E IDIAN~
~p~~o
~'~ SEAL ti
Purchasin A royal ~~~~$ ~~ partment Approval
g pp °~r~e r~~~~°
BY:
KEIT ATTS, P asing Manager
BY:
NAME:
TITLE:
DATE:
Task order 10238b Page 11 of 11
Meridian UVWTP RAS Conveyance System Reconfiguration
CITY OF MERIDIAN CH2M HILL
BY: BY:
TAMMY de WEERD, MAYOR
Dated: Dated:
Approved by Council
Attest:
JAYCEE L. HOLMAN, CITY CLERK
Purcha~si/ng Approv I Department A/ppr/oval
BY: / ' BY: Lc wit ~~
KEIT ATTS, urchasing Manager
NAME: R1Cl-I ~l=~S
TITLE: DC-P ui`( D l~Z, P, lt~
DATE: .3~ S~ I Z
-~ ~.
Task Order 10238b Page 11 of 1 t
Meridian WWTP RAS Conveyance System Reconfiguration
Attachment A
Meridian W WTP RAS Conveyance System Reconfiguration
z/1s/zolz
Anticipated Sheet List for Budget Development
Type Description Count
General
Cover w/Vicinity Map and Shee[Index 1
Standard Abbreviations 1
Standard Symbols 1
Overall Flow Plan Schematic 1
Hydraulic Profile 1
ESCP /Demolition
General Notes 1
Erosion and Sediment Control Plan 1
Erosion and Sediment Control Details 1
Site Demolition 1
Yard Piping Demolition 1
Demolition Sections and Details 1
Vard Piping/Site Civil -
General Yard Piping /Site Civil Notes 1
Mechanical Yard Piping Plan 1
Mechanical Yard Piping Sections 1
Site Grading and Restoration Plan 1
Yard Piping De[alls 1
Site Civil Details 1
Structural
General5tructural Notes 1
Special Inspection Notes z
RAS PumpStatlan Plan 1
RAS Pump Station Section 1
WAS Flow Control/Meter Vault Plan and Section 1
Structural Standard Details q
Mechanical
General Mechanical Notes 1
RAS Pump Station Plan and Section 2
Exst Aeration Basin Discharge Piping Plan and Sections 1
WAS Flow Control/Meter Vault Plan and Section 1
Mechanical Details z
Electrical
General Electrical Notes, Symbols, and Legend 1
Electrical Site Plan 1
RAS Pump Station Plan 1
Panel Schedules 1
One-Line Diagrams 1
Electrical Details 1
Instrumentation & Control
General I&C Notes 1
P&ID -Pump Station 1
P&ID -RAS Flow Control 1
P&ID -WAS Flow Control 1
I&C Descriptions 1
Total Sheet Count: 45