15-Attachment X - General Scope of Basic Services – Appendix A.pdf

APPENDIX A

GENERAL SCOPE OF BASIC SERVICES

GENERAL

The intent of the basic services is to prepare construction documents for the South Mayde Creek Bypass Channel and Stormwater Detention Basin (U101-01-00-E003). The overall objective of this project is to reduce flood risk by lowering peak flows and water surface elevations, reduce sedimentation and erosion along South Mayde Creek, and improve hydraulic conveyance. This project is proposing a channel bypass located along South Mayde Creek from Greenhouse Rd to Barker Cypress Rd, and two sedimentation basins immediately upstream of Greenhouse Rd, located in Addicks reservoir in Precinct 4. This project is being funded by legislative funding and HCFCD 2018 bond funds. This project will require coordination with the USACE and the City of Houston Parks and Recreation Department. The scope of services for basic services is as follows:

Reference Materials and Standards:

Harris County Flood Control District:

o Criteria Manual for the Design of Flood Control and Drainage Facilities in Harris County o Policy and Design Criteria Manual for the Design of Flood Control and Drainage Facilities o Surveying Guidelines o HCFCD Drawing and Graphic Standards o Geotechnical Guidelines o Harris County Floodplain Reference Marks (http://www.harriscountyfrm.org/) o Preliminary Engineering Report (dated September 2020, by Halff Associates, Inc.)

o Feasibility Report (dated January 2017, by HDR Engineering, Inc.)

Wherever there are differences in requirements between the reference materials and standards and this scope, Engineer shall perform services in accordance with the stricter requirements.

Units of Measure - This Project shall be prepared using English units.

Deliverables in Electronic Format: In addition to the hard copy Project deliverables required below, the Engineer shall submit electronic copies of intermediate and final reports, documents, plans and other work products on Compact Disks (CDs) or other suitable media.

o Submit text files in Microsoft Word 97 or later version.

o Submit design drawing files and exhibits in AutoCAD Civil 3D 2011 or later version format.

o Submit a duplicate of text and drawing files in PDF format using Acrobat 5.0 or later version.

o Submit photographs in a digital format converted to a JPEG image and stored on the flash drive.

o Images shall have a resolution no lower than 1024 X 768.

Project Management during Basic Services: Perform Project management and administration necessary for completion of the Project. Services shall include, but are not limited to, the following:

o Provide sub-consultant contract management.

The Engineer shall not subcontract any part of its Contract without approval by the

Director.

The Engineer shall evaluate Sub-Consultant proposals to the same extent as if the services were performed by the Engineer.

The Engineer shall be responsible for services performed by Sub-Consultants to the same extent as if the services were performed by the Engineer.

The Engineer shall replace any Sub-Consultant when requested to do so by the

Director, who shall state the reasons for such request.

The Engineer shall provide the Director with a copy of any of its Consultant subcontracts at the Director’s request.

o Attend Project kickoff meeting and monthly status meetings. Provide an agenda for each meeting and follow up with meeting minutes after each meeting.

o Provide monthly and weekly Project Status updates to document progress.

o Develop and maintain a P6 Project schedule in Microsoft Project format. Submit schedule updates on a monthly basis.

o Coordinate with utility companies to obtain permits or permission to cross pipeline rights-of-ways.

o Coordinate with review agencies as necessary

1. CONSTRUCTION DOCUMENTS

Prepare drawings in accordance with HCFCD's latest Drawing and Graphic Standards, and Surveying Guidelines. Construction drawings shall be prepared so they are legible and to scale when printed on 11”x17” size paper. Prepare specifications and special provisions for a Project Manual in a format prescribed by the District. Prepare a final cost estimate of probable construction cost using District pay items. Follow Quality Assurance/Quality Control (QA/QC) procedures that meet or exceed the District’s own requirements (written procedure available upon request). The Engineer may choose to use the District’s procedures, or submit their own for approval prior to proceeding with design. Prepare a comprehensive Project schedule to be maintained at all times and submitted with monthly invoices. Progress submittals are as discussed in the following

A. 50% Submittal:

1) Perform the following design activities towards the development of 50% construction documents:

a. Conduct site visit.

b. Review record data and recently completed/ongoing relevant projects.

c. Verify configuration of hydraulic connection structures.

d. Verify Technical Memorandum Report information and prepare a memo summarizing any deviations from prior recommendations, as applicable.

2) Deliver 2 sets of 11”x17” plans, a PDF file of the plans, and all CAD files. The submittal shall include the following as a minimum and shall have been reviewed for quality assurance:

3) Plans

a. HCFCD Cover Sheet

b. Index of Drawings with revision date of each sheet shown

c. Harris County Express Review Sheet

d. Project vicinity map

e. General Notes

f. Project Layout

g. Drainage Area Map

h. Project survey control and control point detail sheets showing:

1. survey baseline with survey data tables

2. existing and proposed HCFCD right of way,

3. public and private easements crossing and adjacent to District ROW

i. Quantity Estimate Page

j. Soil Boring Locations

k. Separate TOW sheet layout showing existing and proposed ROW acquisition tracts

l. Plan and Profile Sheets with proposed design top of banks, bottom widths, flowlines, hydraulic structures, piping and appropriate design labeling. Include existing and proposed right of way, existing topography baseline location/control, existing and proposed drainage structures/features, existing utilities (public and private), existing tree preservation and ROW encroachment locations.

m. Separate sheets for inflow, outflow plan and profiles for pipes/spillways etc.

n. Structural detail sheets

o. Fluvial geomorphology/natural channel design detail sheets

p. Traffic Control Plan

q. Demolition Plan

r. Construction access Plan

s. Typical cross sections and point tables

t. Appropriate HCFCD standard detail sheets as required

u. Stormwater Pollution Prevention Plan (SWPPP) standard BMP plan

4) Additional items to submit:

a. Draft engineers estimate using HCFCD pay items in standard HCFCD format

b. Assessment of current construction budget relative to Project scope

c. Separate plan set indicating proof of following QA/QC procedures

d. Utility Conflict Table, showing all utilities in conflict, whether or not a relocation is required, if so, who is responsible for coordinating the relocation, and what is the current status.

e. Specification table of contents with HCFCD standard specifications to be included as well as supplemental Engineer specification (if required).

f. AutoCAD Civil 3D Surface Modeling files.

5) Provide plans to the applicable utility companies for review.

6) Conduct a 50% “plan in hand” site visit with appropriate HCFCD personnel.

B. Bid Ready Submittal:

1) Incorporate the District's 50% comments and deliver 2 sets of 11”x17” plans, signed and sealed by a Professional Engineer (P.E.) licensed in the State of Texas, and a PDF file of the plans suitable in the Engineer’s opinion as complete and ready to bid as well as all CAD files. The submittal shall include all items from the 50% submittal as well as any remaining details required to bid the Project. Details needed to construct Project Items to submit include:

2) Plans - all items from the 50% submittal plus:

a. Soils borings profiles

b. Structural detail sheets

3) Additional Items to Submit

a. Prepare and submit through coordination with the District Design Project Manager a completed Project Manual, signed and sealed by a Professional Engineer (P.E.)

licensed in the State of Texas, including special provisions, Summary of Work, and all Project specific specifications.

b. Engineers estimate using HCFCD pay items in standard HCFCD format.

c. Assessment of expected construction time in calendar days using the District provided table.

d. Storm Water Pollution Prevention Plan (SWPPP) and Standard HCFCD Details

e. Demolition Plan.

f. The PDF of comments previously provided during the 50% submittal with responses to all questions and comments within the PDF

g. Separate plan set indicating proof of following QA/QC procedures.

h. Updated Utility Conflict Table showing all utilities in conflict, whether or not a relocation is required. If so, who is responsible for coordinating the relocation, and what is the current status.

i. AutoCAD Civil3D surface files

4) If appropriate, conduct a bid ready “plan in hand” site visit with appropriate HCFCD personnel.

5) Participate in a Bid Ready constructability review meeting.

6) Coordinate with the District Design Project Manager to provide plans to all applicable federal, state, county and municipal agencies, including Flood Plain Administrator, for review and comment.

7) Provide hydrologic and hydraulic no-impact analysis letter for acceptance by Flood Plain Administrator.

8) Provide updated plans to the applicable utility companies for review.

C. Final Plans Submittal:

1) Prepare a Briefing Memo for HCFCD’s review towards the development of the Final

Plan Submittal.

2) Confirm, maintain and/or acquire currency of permits, plans, utility signatures, and any other pertinent documents valid for construction.

3) Incorporate the District's Bid Ready comments and deliver a PDF of the plans and

Project manual signed and sealed by a Professional Engineer licensed in the State of Texas.

4) Submit a final check set for the District Project Manager review including:

a. PDF of the Plans and Project Manual signed and sealed by a Professional

Engineer licensed in the State of Texas.

b. Engineer’s estimate using HCFCD pay items in standard HCFCD format.

c. Assessment of expected construction time in calendar days using the District provided table.

d. The PDF of comments previously provided during the Bid Ready submittal with responses to all questions and comments within the PDF.

e. Separate plan set indicating proof of following QA/QC procedures

f. Updated Utility Conflict Table showing all utilities in conflict and indicating all conflicts have been resolved.

5) The District Project Manager will review the final check set with appropriate coordination with other District personnel as needed. Upon review and approval by the District Project Manager, Engineer shall:

a. Incorporate any final revisions received from the District Project Manager

b. Submit Original 11”x17” plans, signed and sealed by a Professional Engineer licensed in the State of Texas. Only sheets revised after the check set need to be re-signed.

c. Plans shall include signatures of all external agency signatures including utility companies.

d. Submit a PDF file of the plans.

e. Submit a PDF of the Project Manual ready for bidding, bookmarked for each section .

f. Coordinate with the District to obtain permit from the appropriate Floodplain

Administrator(s).

g. Submit all CAD files a digital terrain model compatible for use in AutoCAD Civil 3D as applicable.