015187
February 9, 2022
Mr. John Corella, PE
Director of Engineering / Public Works
City of Cathedral City
68-700 Avenida Lalo Guerrero
Cathedral City, CA 92234-1208
RE:
Landau Boulevard and McCallum Way Intersection Improvements Task Order for SB-1 Funded Design of a Traffic Signal and Related Intersection Improvements
Dear John:
Albert A. WEBB Associates is pleased to provide you with this proposal for preparing improvement plans for the new traffic signal at the intersection of Landau Boulevard and McCallum Way in the city of Cathedral City. Exhibit “A” contains our Scope of Services, Exhibit “B” contains our Compensation for Scope of Services.
We appreciate the opportunity to be of service and look forward to hearing from you. In the meantime, if you have any questions or require additional information, please call me at (951) 686-1070.
Sincerely,
Albert A. Webb Associates
Nicholas Lowe, MS / PE
Senior Engineer
Dilesh Sheth, PE / TE
Senior Vice President
Reviewed and Accepted
Signature Date
John Corella, PE
Director of Engineering/Public Works
City of Cathedral City
Attachments Exhibit “A” – Scope of Work
Exhibit “B” – Compensation for Services
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EXHIBIT “A” – SCOPE OF WORK
Task 1 - Field Survey and Base Sheets
WEBB will perform field survey necessary for the design of the project. Survey scope includes driveways, sidewalks, ADA ramps, cross gutters, utilities, power poles, overhead lines, striping, signs, manholes and vaults, electrical cabinets and markings.
Field survey information will also include the ground surface, all features within and around the project area, and existing roadway profile and pavement limits. Field survey to include roadway cross section surveys at every 25’. WEBB will perform detailed surveying work including the tie-out of any and all existing survey centerlines and property corner monuments that could be disturbed or affected by the proposed work. Limits of survey include 300’ north and south of the intersection and 150’ east and west of the intersection.
WEBB will obtain available City records such as survey ties, benchmarks, street plans, tract and parcel maps which the City knowingly has in its possession. WEBB will prepare base sheets showing existing improvements, property lines with all right-of-way depicted.
Deliverable: Base sheet with field topo will be used for Street Plan preparations and will be included as part of the 60% project submittal to the City.
Task 2 - Utility Research and Coordination
WEBB will conduct existing utility research for all utilities within the project limits to identify, locate, and accurately layout all underground improvements. WEBB will identify all utilities that could potentially conflict with the planned project and determine special requirements for facilities including protection, relocation, and adjust to grade as needed. WEBB will coordinate with the utility companies to schedule the adjustment of the utilities prior to the start of construction.
WEBB will determine which utility is to receive notification, address the utility notification letters, and provide the City with a copy of the letters. The City will print the letters on City letterhead and provide them to WEBB. WEBB will mail these letters to respective utility. WEBB will prepare letters comprised of first utility notice letter (Preliminary Project Notice) with response form, second utility notice letter (Prepare to Relocate) with response form, and third utility notice letter (Notice to Relocate). WEBB will call the utility companies, as necessary, until a written response form is received from each potentially conflicting utility.
Deliverable: Utility information will be used for Street Plan preparations and will be included as part of the 60% project submittal to the City.
Task 3 – Utility Potholing
WEBB will prepare a potholing exhibit to pothole for up to eight (8) locations at the intersection of Landau Boulevard and McCallum Way.
Potholes shall be slot trench or cross trench style up to 6’ deep, 6’ long, and 6” wide to find potential utilities in the vicinity of proposed pole locations. This method of potholing is meant to uncover shallow dry utilities that are usually not constructed per an engineered plan. Larger and deeper utilities, such as sewer and storm drains, are more accurately constructed per plan and are
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generally within the pavement. Therefore, deeper potholing of those utilities is not recommended at this time.
WEBB’s subconsultant will pothole each location, take photos, take measurements, and prepare a potholing report summarizing the findings.
WEBB will adjust the street and signal plans as needed per the results of the potholing.
Task 4 - Plans, Specifications, and Engineer’s Estimate (PS&E) WEBB will prepare street improvement plans, signing & striping plans, traffic signal plans, and necessary construction details to facilitate the construction of new traffic signal at Landau Boulevard and McCallum Way.
a) Street Improvement Plans may include the following:
Title Sheet
General Notes Sheet
Typical Section Sheet
Construction Details
Plan and Profile
Utility Relocation and Adjustment Plan
Existing surface improvements, driveway approaches, curb & gutter, sewer manhole, water valve and gas valve lids, electrical vaults, air vac, cross gutters, pedestrian ramps, curb returns, and other details that could be affected by the new construction will be shown in a half tone or dashed background format to distinguish them from the new improvements proposed for the project. New improvements including: Sidewalks, ADA Ramps, Concrete Pavement, all facility or structure adjustments to be performed by the contractor (including water valves, gas valves, sewer manholes, telephone manholes, electrical manholes, etc.), all relocations, all reconstructions or modifications shall be shown in full tone or highlighted with appropriate construction note, detail reference or standard plan reference identified. Also, curb ramps within the project limits shall be upgraded to comply with the latest ADA standards as needed. Construction notes should be arranged such that the first notes are 'protect in place' followed with 'removal' notes and ending with the actual work. Notes of like work should be grouped together.
A site review revealed that the pavement is failing in multiple locations in the project area. Per discussion with the City, the City’s on-call geotechnical consultant will provide coring data and street section information to WEBB for use in the street design. WEBB will review the data and determine the pavement rehabilitation or replacement needs. The center of the intersection and 100’ of the north and south approaches (beyond the BCR/ECR) will be included in the pavement rehabilitation or replacement. WEBB will prepare street improvement plans to include pavement work and ramp work.
b) Signing & Striping Plan
Signing and Striping plans to be designed at 1”=40’ scale. All signs and striping to be per latest version of CA-MUTCD and Caltrans standard plans unless otherwise noted. It is understood that the City prefers the older standard of 4” striping and only paint for marking materials. General call outs for the type of striping to be used as well as graphical placement of the striping with specific and critical radii will be shown.
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Signing & striping plans will show existing street striping, street legends, crosswalks, sign legends, and all other ancillary street markings and signing that may exist or be required to complete the street improvements. The signing notes, painted striping notes, painted marking, and pavement marking notes are to be grouped together.
c) Traffic Signal Plans
A traffic signal warrant will be conducted at the intersection. WEBB’s subconsultant, Counts Unlimited, will collect 12 hour turning movement counts at the intersection. The CA-MUTCD signal warrant worksheets will be filled out to determine if any of the nine signal warrants are satisfied.
WEBB will prepare a memo outlining the signal warrant methodology and results.
The final design should include but is not limited to new signal controller and cabinet, video and radar detection, emergency vehicle pre-emption, and battery back-up, ultimate sizing of traffic signal poles and arms, pedestrian push buttons, poles and pole footings shall be designed to a wind velocity of 100 MPH, adequate storage for turn lanes, and any other improvements to signalize the intersection. Traffic signal design shall be ADA compliant which includes but is not limited to access ramps, pedestrian push buttons (PPB), landings adjacent to the PPB, etc. Traffic signal plan to be designed at 1”=20’ scale.
WEBB will measure the height of the existing overhead utility lines and pothole for a traffic signal and safety lighting clearance of utilities. The plans shall clearly show the horizontal location of overhead and underground utilities that are near the proposed improvements.
WEBB will coordinate with the utility agency for the source and location of power for the traffic signal. The City will provide WEBB with the address for the meter cabinet when the location is known. WEBB will prepare paperwork necessary with the utility agency for electrical power. The City will provide WEBB with signed forms for submittal.
d) Project Specifications, Bid Documents, Construction Assistance
The City will provide WEBB with its boilerplate Specifications and Technical Provisions in Microsoft Word format. WEBB will be compiling the Project Specifications including the project specific scope of work in the Technical Specifications and provide special Technical Provisions beyond the City's standard Technical Provisions. The Specifications shall be signed by a WEBB civil engineer registered in the state of California when they are complete and ready for bid for construction of the improvements. The latest edition of the Green Book (Standard Specifications for Public Works Construction and subsequent amendments) will be used on the project except for striping and traffic signs. The technical portion of the Caltrans Standard Specifications will be used for the striping and traffic signs.
WEBB will provide assistance during construction bidding as well as provide construction assistance services including review of equipment submittals.
e) Cost Estimates
WEBB will provide a construction quantity and cost estimate with each submittal of plans. The unit costs shall be based upon the most current cost information for recent similar projects in the area compiled by WEBB and approved by the City.
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The estimated items of work with quantities shall include, but not be limited to itemizing all removals, clearing and grubbing, relocations, PCC sidewalk, AC pavement, reconstruction of curb ramps, raising manholes, water valve lids, signing & striping, signs, and traffic signal, among others. The estimated items of work with quantities shall be arranged in chronological order of construction and shall contain all the information needed to prepare the Engineer's Estimate of Costs.
WEBB will be required to periodically submit updated preliminary cost estimates as design progresses. WEBB's final construction cost estimate shall be based upon, and in agreement with, the final items of work with estimated quantities. Computations showing estimated quantities and costs for each location of work, as well as the sum totals for each segment of the project and total project, shall be submitted to the City for review along with a set of plans showing items of work with quantities on each sheet. Submission of computations does not relieve WEBB's responsibility of submitting an accurate estimate of quantities.
An initial review of the site and scope have determined that the construction cost for the project will be approximately as follows:
Roadway Improvements/Pavement – $150,000
Traffic Signal and Signing/Striping – $250,000
Deliverable: 60% plans, 90% plans, cost estimate, and specifications, 100% plans, cost estimate, and specifications
Task 5 - Project Management, Meetings and Schedule
WEBB will schedule and attend meetings in the planning phase as follows:
a. Kick-off meeting
b. Project Development Team (PDT) Meetings – monthly or as needed c. City Council Meeting if required
d. Other meetings as necessary such as, but not limited to agencies, property owners, field reviews, utitlities, and such.
WEBB will schedule, chair, and prepare meeting agendas and minutes for all meetings. WEBB will develop the schedule utilizing Microsoft Project. The schedule shall be provided to the City in digital form. An updated schedule is to be distributed during the PDT Meetings. The project schedule will be divided into tasks and subtasks in full detail including, but not limited to utility relocation (if needed), City function timeline, critical path, and other outside sources such as agencies or utilities.
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Services described in our Scope of Work (Exhibit “A”) shall be provided on a lump sum basis not to exceed $81,856. Charges for services will be billed monthly in accordance with the attached fee schedule. A breakdown of our fees is provided below
Item Description Dilesh Sheth Myung Choo Nicholas Lowe Eugene Abrego Nicholas Keller Son Le Deborah Saulina Michael Johnson Jon Ros Andres Lopez Party Chief/2-Person Survey Crew Joy SellmanTotal HoursSubtotal - LaborSub-consultant budgetExpensesTotal/task1Billout Rate265$ 245$ 224$ 224$ 186$ 150$ 101$ 245$ 197$ 171$ 268$ 135$ Task 1 - Field Survey and Base Sheets6 1 4 20 6 12 4910,607$ -$ -$ 10,607$ 1.1Field Survey212612235,281$ -$ -$ 5,281$ 1.2Base Sheets4220265,326$ -$ -$ 5,326$ Task 2 - Utility Research and Coordination2 8 40 16 667,848$ -$ 200$ 8,048$ 2.1Utility Research and notification letters124252,648$ -$ 200$ 2,848$ 2.2Utility Coordination and Utility Mapping181616415,200$ -$ 5,200$ Task 3 - Utility Potholing1 2 2 5726$ 10,350$ -$ 11,076$ 3.1Utility Potholing1225726$ 10,350$ 11,076$ Task 4 - PS & E4 18 32 20 16 126 16 40 27246,010$ 575$ -$ 46,585$ 4.1Street Improvement Plans1 8 16 16 408114,185$ -$ 14,185$ 4.2Signing and Striping1224274,313$ -$ 4,313$ 4.3Traffic Signal Warrant and Plans14168010116,829$ 575$ 17,404$ 4.4Specifications & Bid Documents1 4 10 4 10 10396,891$ -$ 6,891$ 4.5Cost Estimate2 2 8 4162,542$ -$ 2,542$ 4.6Bidding and Construction Assistance24281,250$ -$ 1,250$ Task 5 - Project Management, Meetings, & Schedule4 16 4 24 5,540$ -$ -$ 5,540$ 5.1Project Management & Coordination8 81,792$ -$ 1,792$ 5.2Meetings444 122,852$ -$ 2,852$ 5.3Schedule4 4896$ -$ 896$ 8 18 51 30 16 136 59 4 20 6 12 56 41670,731$ 10,925$ 200$ 81,856$ Total