TAIT & Associates, Inc.
Groundwater Drainage Improvements Phase 4 & 5
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Work Plan/Scope of Work
TAIT takes no exceptions to the City’s proposed scope of work. Based on our review of the City’s RFP, project site and existing records, the following is our proposed final scope of work for the City’s design contract:
A. Project Kick-Off Meeting
A design kick-off meeting with TAIT’s key team members, City staff, and other affected parties, will be held at the start of the project to identify clear lines of communication and review the final scope, schedule, milestones and other project details of concern. At this meeting the project’s schedule will be confirmed with the City. It is anticipated that the City will provide all pertinent record information for the existing City streets and utilities including as-built plans, record plans, CAD files and GIS files, for the project limits. Upon completion of the meetings, TAIT will also prepare meeting minutes for circulation, review and comments.
Deliverables: Meeting Agenda & Minutes
B. Existing Records, Field Survey, and Basemapping
Research of record Information from City files will be conducted to acquire existing available design records and utility information. It is anticipated that the information collected during the research phase will be used to assist in the development of the project base maps.
Deliverables: Digital Copies of Obtained Records
C. Existing Records, Field Survey, and Basemapping
This task includes hours required to review the site conditions for each project location to document current field conditions and review any chances that have occurred since the date of the initial report preparation. This task also includes the field survey time required to obtain topographic and aerial drone survey and storm drain invert data at each of the project locations. Survey will be on a temporary basis of bearing and benchmark, however, it will be placed on California State Plane coordination system so as to allow the correlation of an aerial drone orthographic image.
Deliverables: Field Notes, Observations, & Photos, Topographic Field Survey D. Utility Research & Notification
As part of our base scope of work, TAIT will prepare and distribute two utility notices to affected utility agencies.
The first notice will be distributed at project inception and will notify the utilities of the project and will request records for only areas that the Utility foresees conflicts with. The second notice will be distributed to all present utilities at the 80% design completion stage and will include a reduced size plan for the utility’s review and comment. TAIT will review all obtained record data and will coordinate with utilities that may be affected in order to obtain further design and construction requirements. All utility coordination, records and data will be compiled at the end of the project and will be submitted to the City for future reference.
Deliverables: Utility Notices (1st & 2nd)
TAIT & Associates, Inc.
Groundwater Drainage Improvements Phase 4 & 5
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E. Drainage Improvement PS&E
Upon completion of the project research and Base mapping, TAIT will initiate the preparation of the PS&E design package.
D.1) Preliminary Design Analysis, Coordination, & Recommendations: As an initial task for the design process, TAIT will prepare preliminary alignments and conduct initial design conflict checks in order to implement the initial design recommendations for each project area. Initial items anticipated during the preliminary design task are as follows:
• Contact and verify design and submittal requirements for LACFCD connection permit • Review field conditions and determine necessary treatment flow rate • Contact manufacturer for and verify best product for implementation • Coordinate with City/Stakeholders regarding private improvements • Check record depths for utility crossings and determine if further potholing/review will be required • Prepare preliminary design alignments and submit to City for initial review and approval D.2) Construction Drawings: Upon completion of the preliminary design and the City’s approval of the initial design concept, TAIT will initiate the preparation of the design plans. Based on our review of the RFP, the following are the anticipated plan sheets on this contract:
SHEET DESCRIPTION SCALE SHEETS
Title Sheet -- 1
Notes, Details, & Typical Sections -- 1
Drainage Improvement Plans 1” = 20’ H, 1” = 4’ V 2
Drainage Connection Details 1” = 20’ H, 1” = 4’ V 1
Total Sheet Count -- 5
The Drainage Improvement Plans will be prepared at a 1” = 20’ horizontal and 1” = 4’ vertical scale (when profiles are needed). Due to the fact that an LA County Flood Connection Permit will be required on this project, the plans that require connections must be in plan and profile, or have a detail that is prepared I plan and profile for the connection per the County’s formatting requirements. Stationing will be determined by roadway and existing storm drain stationing and will be depicted on the plans for connection points with elevations, and plan callouts for each construction item. Drainage improvement plans will be prepared as early as possible in order to facilitate an expedited submittal to the County for review and approval.
QA/QC: Prior to each submittal, TAIT will conduct a full QA/QC per our quality assurance program described at the end of this section. Upon completion of the QA/QC review, TAIT staff will incorporate the noted comments and will begin compiling the PS&E for submittal to City. TAIT will plot, compile and deliver the noted number and format of PS&E to the City for each submittal per the RFP requirements.
Deliverables: Preliminary Plans, 80% Plans, & 100% Plans TAIT & Associates, Inc.
Groundwater Drainage Improvements Phase 4 & 5
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F. Specifications:
TAIT will prepare draft technical specifications for the proposed project based on the City boilerplate specifications. Each work item will have a clear measurement and payment clause in order to avoid costly change orders during the construction phase. Specifications will also include clear delineation of the traffic control requirements and parameters as well as coordination requirements with utilities. Finally, the project specifications will be reviewed by the QA/QC Manager prior to each submittal per the quality assurance program.
Deliverables: 80% Specifications & 100% Specifications
G. Engineer’s Estimate:
TAIT will prepare an updated engineer’s cost estimate at the 80% PS&E submittal stage for City review and input. Unit prices will be checked against recent City of Diamond Bar projects. Work items will be prepared to correlate with the preliminary specifications, and will include all work items including mobilization, storm water compliance, traffic control, and striping. The cost estimate will be reviewed by the QA/QC Manager prior to each submittal per the quality assurance program.
Deliverables: 80% Estimate & 100% Estimate
H. LA County Flood Control District Connection Permits
TAIT will initiate contact with LA County Flood at the inception of the project. During the 80% PS&E Phase, TAIT will prepare the connection permit application form and will submit the connection permit to the County for review & approval. This task includes the necessary hours to prepare the required forms, compile and submit the previously noted plans, and revise/resubmit the plans to the County based on received comments. The preparation of a Hydrology Study and a Water Quality Management Plan are not included and assumed to not be required for this Connection Permit due to the fact that hydrology/hydraulics are not being revised. Should LA County require further studies & reports, an alternate task for non-priority LID Plan and a hydrology memo has been included as an alternate task.
Deliverables: LA County Flood Connection Permit Package I. Bid & Construction Assistance
Upon approval of the PS&E and issuance of the Bid documents, TAIT will provide support to the City during the entirety of the bidding and construction phase. TAIT will actively respond to any received RFIs, and will provide necessary support to City staff to provide additional material that may be required on a T&M basis.
Deliverables: Response to RFIs (Assumes 4 max)
J. Design Project Management & Meetings
This work item includes all project management, project meeting, coordination, and administrative hours for this contract. As part of our base scope, in addition to the design kickoff and site visit meeting, TAIT has assumed one additional project meeting to be held at City Hall during the life of the design phase. All other meetings and correspondence will be via digital conferences to review project material.
Deliverables: Meeting Agendas & Minutes
TAIT & Associates, Inc.
Groundwater Drainage Improvements Phase 4 & 5
Page | 8
ALTERNATE WORK ITEMS:
2-A: Utiliyt Potholing
The need for final utility potholing and locating will be reviewed as part of the initial design phase of this project.
Depending on the alternative selected and based on the City’s desire to either verify any unknown crossings during design or defer to construction, TAIT will work with the City to obtain location specific proposals for any necessary utility locating, potholing, or tracing that may be desired. TAIT has provided a budgetary fee of $10,000 to cover the costs of any anticipated utility locating services on this contract. Upon authorization of the alternate work item, TAIT will obtain bids from qualified contractors and will work with the City to maximize this budget item.
2-B: As-Built Plans
Should the City request it, TAIT will compile the contractor and inspector provided red line documents for this project and prepare a final As-Built PDF plan set for City review and records. 2-C: Geotechnical Investigation
Based on review of the material included in the RFP, it does not appear to be that further geotechnical studies will be required, however, in order to provide a budget and option for the City to secure geotechnical services during the course of the design, an alternate budget of $10,000 has been included. Should the City desire to have further testing conducted based on the final limits of work, TAIT will secure site specific proposals for the necessary geotechnical services.
2-D: Non-Priority LID Plan and Hydrology Memo
Due to the fact that only low flow, post treatment water quality flows will be directly discharged to the storm drain, it is not anticipated that a hydrology report or LID plan will be required. However, should LA County require a memo and non-priority LID report to be submitted, TAIT will requires authorization for this task to comply with such requests. This task includes both calculation of LID treatment volumes, preparation of a LID Plan, calculation of tributary flows for the connection, and inclusion of a hydrology memo documenting the added flows being introduced to the existing storm drain system.
TAIT & Associates, Inc.
Groundwater Drainage Improvements Phase 4 & 5
Page | 9
D. PROJECT SCHEDULING
Per the RFP, it is the City’s intention to have design completed by December 2022. TAIT commits to the project schedule and has prepared a detailed project schedule as presented below.
TAIT & Associates, Inc.
Groundwater Drainage Improvements Phase 4 & 5
Page | 10
E. RESOURCE REQUIREMENTS
Per the RFP requirements, resource requirements have been prepared for this project and is presented below for City review.
F. FEE SCHEDULE
A Not to Exceed (NTE) fee proposal has been included in a separate document containing the cost/hour breakdown of each work item. The cost proposal is based on the scope presented in this contact and includes all work items requested by the City. 1) DESIGN SERVICES
Project Kick Off Meeting A 2 2 4
Records Research & Compilation B 2 8 10
Design Field Walk, Topographic Survey, and Basemapping C 4 16 40 24 84 Utility Research and Notification D 2 12 2 16
Drainge Improvement PS&E E 8 4 48 120 0 0 180
Preliminary Design Analysis, Coordination, & Recommendations E.1 4 2 16 40 62 Construction Drawings E.2 4 2 32 80 118
Specificatoins F 2 1 14 17
Engineer's Estimate G 1 1 2 12 16
LACFCD Connection Permit H 4 16 60 80
Bid & Construction Assistance I 8 4 12
Design Project Management & Meetings J 16 8 2 26
SUBTOTAL 45 6 104 262 24 4 445
TAIT & ASSOCIATES PROPOSAL FOR
GROUNDWATER DRAINAGE IMPROVEMENTS PHASE 3 Total Estimated Fee: $ 81,055 PROJECT FINANCIAL SUMMARY Total Estimated Fee + Alternate Items: $ 104,645 BILLING RATES 255 245 190 145 350 115 TOTAL PROJET COSTS WORK TASK PM QA/QC Proj. Eng. Designer 2-Man Admin Consultant/ ITEM TOTALS TASK # PIC Manager I Survey Expense HOURS BILLABLE
1) DESIGN SERVICES
Project Kick Off Meeting A 2 2 $ - 4 $ 800
Records Research & Compilation B 2 8 $ - 10 $ 1,540
Design Field Walk, Topographic Survey, and Basemapping C 4 16 40 24 $ - 84 $ 18,260 Utility Research and Notification D 2 12 2 $ - 16 $ 2,350 Drainge Improvement PS&E E 8 4 48 120 0 0 $ - 180 $ 29,540 Preliminary Design Analysis, Coordination, & Recommendations E.1 4 2 16 40 $ - 62 $ 10,350 Construction Drawings E.2 4 2 32 80 $ - 118 $ 19,190
Specificatoins F 2 1 14 $ - 17 $ 3,415
Engineer's Estimate G 1 1 2 12 $ - 16 $ 2,620
LACFCD Connection Permit H 4 16 60 $ - 80 $ 12,760
Bid & Construction Assistance I 8 4 $ - 12 $ 2,800
Design Project Management & Meetings J 16 8 2 $ - 26 $ 5,470 SUBTOTAL 45 6 104 262 24 4 $ - 445 $ 79,555
REIMBURSABLES (Reprographics, Design Mileage, etc.) $ 1,500 TOTAL NOT TO EXCEED BASE FEE $ 81,055
2) ALTERNATE WORK ITEMS
Utility Locating/Potholing A $ 10,000 0 $ 10,000
As Built Plans B 2 4 16 $ - 22 $ 3,590
Geotechnical Investigation C $ 10,000 0 $ 10,000
SUBTOTAL 2 0 4 16 0 0 $ 20,000 22 $ 23,590
CLIENT: City of Diamond Bar
PROJECT: PHASE 4 DRAINAGE IMPROVEMENTS
PREPARED BY:DS 2022.08.19