26-241E 2026 SD FM EC Parts 1-6 SOW 7.15.26.pdf

SCOPE OF WORK 26-241E 1 of 16 July 2026

CITY OF DALLAS

DALLAS WATER UTILITIES

SCOPE OF WORK

FOR

Engineering Contract No. 26-241E

2026 Storm Drainage, Flood Management and Erosion Control Projects

GENERAL:

Provide necessary Engineering Services required for developing construction plans and specifications for stormwater projects and flood protection at various locations within the City of Dallas as described herein.

The services shall include, but are not limited to the following:

Phase I Preliminary Investigation and Design Report (15%)

Phase II Preliminary Design (35%)

Phase III Detail Design (65%)

Phase IV Pre-Final Design (95%)

Phase V Final Design Deliverables (100%)

The service shall include Contract Administration as specified in General Requirements. All Engineering Services shall be completed within five (5) years of the contract date as required to meet project schedules.

A. PROJECT DESCRIPTION

Engineering services for the study and design of erosion control, flood management and storm drainage system improvements for:

SCOPE OF WORK 26-241E 2 of 16 July 2026

PART 1

Project Name Category Funding Source

Council District

Preliminary Project Description

2310 Chart Concrete Drainage Channel Repair

Flood Management

Bond

7 Repair various areas of the concrete lined channel/alley in the area of Chart, Oldbridge, and Rockyglen

Fairglen Dr 8928 Storm Drainage

Bond

10 ~200 LF 21" pipe, 1-10' inlet, to relieve street flooding.

Jan Creek Culvert @ Wheatland

Flood Management

Bond

8 Add culvert, raise road, FREQ. 100 YR., DEPTH 1.3, design and construction

Oak Haven Lane 8602 Flood Management

Bond

8 Design & Const - Replace existing culvert crossing that is continually subject to blockage potentially causing road to flood.

Pruitt Branch @ C F Hawn

Flood Management

Bond

5,8 Analysis & Design. Construction will be a future project contingent on agreement/cooperation with TxDOT.

Upsize culvert crossing of C F Hawn US 175 to prevent overtopping as shown by CTP FY19.

10101 Royal Highlands Drainage Improvements

Storm Drainage

Bond

10 Installation of storm sewer and inlets to provide drainage relief to 10101 Royal Highlands

9728 Springtree Storm Drainage Relief

Storm Drainage

Bond

10 Design & Const. Alley drainage bypassing and flooding property a 9728 Springtree. Propose 21" RCP and inlet to capture runoff.

Wentwood 7314 Storm Drainage

Bond

13 Property flooding, design and construction

PART 2

Project Name Category Funding Source

Council District

Preliminary Project Description

Calm Meadow Drainage Rehabilitation

Storm Drainage

Bond

12 Design & Construction - Uncontrolled drainage of private pond due to slipped joints in existing public drainage system. Remove & replace existing public system in private pond.

Glencairn 216 Storm Drainage

Bond

8 One home floods - inadequate drainage system at low point in street

SCOPE OF WORK 26-241E 3 of 16 July 2026

6231 Pemberton Drainage Relief System

Storm Drainage

Bond

13 Design & Const of drainage relief system at Pemberton Dr Cul-De-Sac and Pemberton Dr. @ Tibbs St.

Royal Spring 10510 Storm Drainage Relief

Storm Drainage

Bond

13 Design & construction of drainage relief system at the intersection of Rosser Road and Royal Springs to prevent runoff bypassing ditches and potentially flooding 10510 Royal Springs

Southwood - Franklin

(S) Area

Storm Drainage

Bond

3 Provide 100-year upgrade to existing system. One known garage floods, street flooding, design and construction. Site 12L 1995 Misc.

Flooding Report

Weeburn 3677 Storm Drainage Relief

Storm Drainage

Bond

13 Stormwater runoff bypassing alley and flooding home. Install 10-foot storm inlet and lateral to main system.

Whitehall 3870 Storm Drainage Relief

Storm Drainage

Bond

13 Remove and replace existing 24" RCP to new 30 RCP (150 linear feet).

Install 10-foot storm inlet to a 21” RCP lateral (100 ft to connect to new 30”

RCP).

Yolanda Circle 5636 Storm Drainage

Bond

13 Replace approx. 380 LF of 15" RCP with approx. 30" RCP - Design and Construction

PART 3

Funding Source

Council District

Preliminary Project Description

Esperanza 14000 (Buildings 2,6,7)

Erosion Control

SDM

Capital

11 Hunt Branch - Private - Type 1, three apartment buildings, approx. 7' from bank and 16' deep. Approx. 105 LF of gabion wall

Elmwood Branch Bridge @ Melbourne

Flood Management

SDM

Capital

1 Install bridge, FREQ. 2 YR., DEPTH

1.6', VEL. 5, RATING = 8,

ELIMINATES FLOODING OF FOUR

HOMES, Analysis, design and construction

Navajo Ct 3423 Erosion Control

SDM

Capital

4 Red Bud Branch - Private - Type 1, home threatened from bank. Approx.

55 LF of erosion protection

Royal 9801 Unit 808 Erosion Control

SDM

Capital

10 Jackson Branch Tributary - Private - Type 1, building threatened, approx.

13' from bank 20' deep. Approx. 32 LF of erosion protection.

SCOPE OF WORK 26-241E 4 of 16 July 2026

Trinity River - Lower West @ Margaret Hunt Hill / Ron Kirk Pedestrian Bridge

Erosion Control

SDM

Capital

6 Trinity River - Public - erosion threatening public trail.

Trinity River - Lower East @ RR / Courts Building

Erosion Control

SDM

Capital

6 Trinity River - Public - erosion threatening public trail.

PART 4

Funding Source

Council District

Preliminary Project Description

Aberdeen-Tulane - Phase 2

Storm Drainage

SDM

Capital

13 Second phase of project to alleviate street flooding, construction.

2530 Blanton Outfall Repair

Storm Drainage

SDM

Capital

5 Design & Construction of repairs to the existing drainage system. Portions of the existing system has collapsed causing a sinkhole.

Dixon Branch - E Prong Culvert @ Mediterranean

Flood Management

SDM

Capital

10 Add culvert, FREQ. 100 YR., DEPTH

2.5, VEL. 5.74, RATING = 12.54,

design and construction

Gateridge 6841 Storm Drainage Relief

Storm Drainage

SDM

Capital

11 Design & const. of storm drainage relief system to provide flooding relief at 6841 Gateridge.

Jackson Branch - Church Road Bridge

Flood Management

SDM

Capital

10 Improvements of Church Rd Bridge - Raise bridge and widen span, Analysis, design and construction

Knight Street 2426 &

Storm Drainage

SDM

Capital

2 Duplex-type unit built in sag, lower than street, new construction, local system not adequate.

Parkhurst - Brookhurst (Lake Highlands Baptist) Relief System

Storm Drainage

SDM

Capital

9 Design and construction of a drainage relief system to relieve the existing undersized 42" pipe that runs under Lake Highlands Baptist Church; relief system 1,600 LF 72" pipe from Parkhurst to Northcliff to Peavy, discharge into open

Preston Creek Place

Storm Drainage

SDM

Capital

11 Replace existing pipe culvert with box culvert - pipe is continually submerged, inadequate, and subject to blockage causing road to flood

SCOPE OF WORK 26-241E 5 of 16 July 2026

PART 5

Project Name Category Funding Source

Council District

Preliminary Project Description

Desco 7108 Storm Drainage

Bond

13 One house floods, streets flood, design and construction. Site 4S 1995 Misc. Flooding Report

Harry Hines 5323 Storm Drainage

Bond

2 UT Southwestern Basement flooded, design and construction

Medical District Drive Drainage Relief System Phase II

Storm Drainage

SDM

Capital

2,6 Design & Construction - 100yr upgrade to system at Medical District @ Southwestern Medical. From WB Stemmons frontage to Hampton- Oaklawn sump. TxDOT coordination required.

Military Parkway @ Urbandale Park

Flood Management

Bond

5 Upgrade culvert crossing at Military Parkway and Urbandale Park. Approx.

3.8' depth of overtopping and 0.55 fps from Stream 5B1 regulatory model during 100-year.

Woody Branch Floodplain Management Study

Flood Management

Bond

CW Floodplain Management study of the Woody Branch to determine potential capital projects to address flooding, drainage, and erosion.

PART 6

Funding Source

Council District

Preliminary Project Description

5th Street Drainage Relief System

Storm Drainage

SDM

Capital

1 Design and construct 100-year drainage system for area bounded by 5th, Lake Cliff Dr., N. Lancaster, and E. Jefferson.

Lane Park - 7100 to 7300 Block

Storm Drainage

SDM

Capital

13 2 houses and surrounding streets flood, design and construction

Polk Street 3425 (RL Area 38)

Storm Drainage

SDM

Capital

4 100-year upgrade to storm sewers in Polk Street just north of US 67/TXU ROW to relieve flooding in RL Area 38.

Tyler (S) - Berkley Storm Drainage

SDM

Capital

1 100-year upgrade to existing system, 1 house and area street flooding, design and construction. Site 9L 1995 Misc. Flooding Report

SCOPE OF WORK 26-241E 6 of 16 July 2026

Welch 11811 Storm Drainage

SDM

Capital

13 Garage flooding from alley, reconstruct 200 LF alley w/invert, Drainage Analysis of Misc. Flooding Sites 1995.

Woodlark Trail, 306 Storm Drainage

SDM

Capital

3 Design and construction of overflow flumes on Woodlark and Glen Forest

B. GENERAL REQUIREMENTS

1. Overview:

a. The Consultant (ENGINEER) shall produce a project schedule to be approved by

DWU (OWNER) at the beginning of the project. The duration shall match the anticipated project time frame herein. ENGINEER shall update the schedule monthly with project progress. ENGINEER shall document reasons for any project delays and indicate how the project will be brought back on schedule.

This schedule shall be submitted with each monthly pay application.

b. Subcontracts for CADD work, if any, shall have the following clauses:

“Subconsultant shall submit a CD containing all drawing files with each plan review submittal.”

c. Format for CADD files shall be MicroStation Connect compatible, DGN format and Adobe PDF. Reference CADD files to State Plane Coordinates. Use of AutoCAD will not be allowed. Half-size plans shall be 11-inch by 17-inch sheets.

Full size plans shall have the design contained in a 22-inch by 34-inch area and printed on 24-inch by 36-inch sheets. Any new plan sheets are to conform to the format established at the beginning of the design. Typical format shall be submitted for DWU approval at the beginning of the design process. All levels of submitted specifications shall be in an electronic format compatible with the latest version of Microsoft Word and a character recognition version of Adobe PDF.

d. Identify, coordinate, and conform design of this project to meet legal and regulatory parameters/constraints, codes and requirements set forth by Federal, State, and local agencies, to include, but not be limited to, the following identified agencies: Environmental Protection Agency (EPA), Texas Commission on Environmental Quality (TCEQ), Federal Emergency Management Agency (FEMA), US Army Corps of Engineers (USACE), Texas Department of Transportation (TXDOT), Occupational Safety and Health Act (OSHA), State of Texas, City of Dallas, and Dallas County or other Counties within the project limits.

e. Address, evaluate, and incorporate recommendations and practices from the American Water Works Association (AWWA), ASTM, Water Environment Federation (WEF), Hydraulic Institute Standards, American Society of Civil Engineers (ASCE), and others, as appropriate.

SCOPE OF WORK 26-241E 7 of 16 July 2026

f. Services identified as special services items in this Scope of Work are items which must be authorized in advance and in writing by the OWNER’s Project Manager and will be paid only on a direct expense, lump sum and/or hourly billing of time expended by consultant as agreed to with the OWNER. Such items are so designated because it is difficult to determine an accurate level of services required for the items at this time. Consultant will establish an estimated amount for each item and submit to City for written authorization prior to beginning work. Consultant shall notify City’s Project Manager in advance and receive written authorization to exceed the estimated amounts on items. Total payment for these items shall not exceed the total amount authorized by City; however, the amounts allocated to each item may be adjusted by City’s Project Manager as needed.

g. Promptly advise City’s Project Manager of comments/requests which are out of scope or which may affect construction/engineering costs. Prior written authorization from City’s Project Manager is required for additional or out of scope work that does not exceed the total amount of Special Services in the contract. City’s Project Manager and other City staff do not have the authority to authorize additional or out of scope work in excess of the total amount of Special Services. Any such work performed by the ENGINEER (or any sub-consultant) prior to a Supplemental Agreement awarded by the Dallas City Council or approved by Administrative Action will be considered pro-bono work by the ENGINEER and will not be compensated.

h. Use existing information, reports, surveys, and available data, as applicable.

i. Coordinate the proposed design and construction activities under this contract with City’s Project Manager relative to other proposed and on-going design, construction and maintenance activities.

j. Provide internal quality control for deliverables prior to submission to City as outlined in the Specific Requirements section. Intermediate submittals provided for review shall, at a minimum, bear the signature of the ENGINEER’S Project Manager and designated Quality Control reviewer. City shall provide written comments for each submittal bearing, at a minimum, the signatures of the City’s Project Manager.

k. Evaluate City comments and coordinate responses between City’s Project

Manager and Consulting Firm’s Project Manager, into reports, technical memoranda, plans and specifications. Inform the City Project Manager, in writing, of the engineering and construction budget impact of comments.

l. ENGINEER shall provide written response by a licensed professional engineer to

Owner’s comments received on reports, technical memoranda, and plans and specifications. Submittals, RFI’s, and other similar types of information shall be approved, rejected, or answered by a licensed professional engineer.

m. Project Management & Administration - Provide accounting/invoice preparation and review, subconsultant management, project guide, progress tracking, filing, mailing, copying, and maintain an issues log. Deliverables: Monthly Invoice, Monthly Project Manager Status Report, Decision/Action Item Log.

SCOPE OF WORK 26-241E 8 of 16 July 2026

2. General Contract Services Provide the following contract services:

a. Prepare Special Provisions and Special Technical Specification for use in Bid

Specification documents. DWU will prepare general Contract Specifications.

Special Provisions are only those specifications not specifically in the DWU Standard Specifications Manual, NCTCOG Public Works Construction Standards, or the City of Dallas Addendum to the NCTCOG Public Works Construction Standard.

b. Prepare Engineer’s Estimate of Probable Costs and Bid Item tabulations. This shall be provided to the Project Manager in Excel format as shown in the Probable Cost Template at, unless otherwise specified:

http://dallascityhall.com/departments/waterutilities/Pages/dwu_design_standards.

aspx

c. Provide other required construction services as requested by the OWNER. This shall include but not be limited to: plan revisions, submittal reviews, periodic site visits, review of proposed change orders, attend pre-bid meetings, etc.

d. After completion of the design, the Consultant will be required to attend what is referred to as a “Project Partnering Session” wherein the Consultant will be expected to provide a one to two-hour presentation of the various Project Segments – the design considerations, reasons for any unusual designs, discussions of any expected construction difficulties, etc. In attendance at this meeting will be the Selected Prime Contractor, key Sub-Contractors, DWU personnel, and other interested parties. This meeting will take place at a time and place to be determined, but will usually happen from one to two months, but as many as 12 months, after the Prime Contractor has been selected through the bid process. This meeting will generally require 3 to 4 hours of participation for two to three of the Consultant’s design personnel.

e. Deliver one set of sealed Mylar design drawings and special specifications to

Project Manager.

f. Furnish files of the scanned images of the final sealed drawings and specifications with the construction records posting on a CD to Project Manager.

3. Plan Drawings Submit all original CADD Drawings to OWNER, including any special appurtenance and detail sheets, with the following stipulations:

a. All submitted CADD Drawings shall be done in ink (CADD Plotter) on four-mil thick double matte Mylar.

b. All design and plan drawings shall be produced in an electronic file format created by a CADD system completely compatible with the latest version of Bentley System Inc.’s MicroStation®. Each final design sheet must be in its own

SCOPE OF WORK 26-241E 9 of 16 July 2026 computer file in a format completely compatible with the latest version of Bentley System Inc.’s MicroStation® and each final design sheet will incorporate the computer file extension “.dgn” as the last characters in the file’s name. No reference files, no special or proprietary cell libraries, no special or proprietary font files, and no special or proprietary line styles, shall be attached. With the exception of Bentley System Inc.’s proprietary data files for applications such as InRoads® or InRoads Survey®, no other proprietary files may be included.

c. Each individual design sheet shall be provided in a “Tagged Image File Format (TIFF)”, latest version (this extension may be abbreviated to “tif”).

d. Additionally, each individual design sheet shall be provided in the latest version in the Public Domain of the “Portable Document Format (PDF)” type file.

e. Should the Consultant desire to supply electronic files in some other format or created by some other program, prior approval from the Project Manager shall be required.

4. CADD Deliverables

a. All reference files and cell libraries used to create the design sheets shall be included. If proprietary files for fonts, lines styles, aerial photographs, or other such attachments are included, legal and binding permanent licenses for the use of such files shall be included.

b. Detail sheets, special appurtenances, and other such design details should be supplied as outlined above. Any proprietary or copyrighted details shall include a release from the copyright holder allowing the City of Dallas or Dallas Water Utilities to make an unlimited number of copies of the submitted special details.

5. Specification Documents

a. The Consultant shall furnish all computer specification files, including all word processor or spreadsheet files in latest version of Microsoft Office for Windows®.

Specification Document files shall be furnished on Compact Disc® or other agreed upon media as approved by the Project Manager.

b. Scanned images, photographs, reports, analysis, and all other project data shall be submitted in file formats compatible with software and computers owned by the City of Dallas and Dallas Water Utilities. All such specification documents shall be furnished on Compact Disc® or other agreed upon media as approved by the Project Manager.

6. Media Submittal

a. Submittals must be on a Compact Disc® (CD), “Write Once” (CD-R) media. The

CD-R must be “closed” (formatted for use on any computer and write protected so that no additional data can be added). Note: The requirement for CD-R media is driven by the need to maintain an archival record of the actual file submitted in a means that CANNOT be modified.

SCOPE OF WORK 26-241E 10 of 16 July 2026

b. Each CD-R shall have written in permanent ink on the label side the name of the consultant company submitting the plans, the contract number, project name, date, location description, the correct 421Q (Storm Drain) drawing number, and data type contained, (i.e.) CADD or GIS. Original, unmodified CD-Rs will be submitted to the Project Manager and ultimately filed with the Utility Automation & Integration Program of the Dallas Water Utilities, located at Dallas City Hall, unless otherwise specified.

c. Should the Consultant desire to furnish any of the required submittals in another type of media, the Consultant shall seek the approval of the Project Manager.

7. Digital Drawing File Information

a. The CD-R shall contain an electronic copy of the digital drawing file in

MicroStation DGN format. A compressed and self-extracting file type (.ZIP) of these is acceptable.

These submittals must follow the specifications listed above.

All digital drawing files must be “stand-alone” without the necessity of attaching Reference or X-Ref files or modifying levels and layers.

b. The CD-R shall also contain a copy of the transmittal letter accompanying the submittal in Microsoft Word for Windows® software, current release, or other compatible text file format of MS “Word” is the preferred document software.

8. Digital Drawing Registration and Survey Control

a. Digital drawing file data shall be in U.S. Survey Feet for distances, and degrees, minutes, and seconds for bearings and angles.

b. Northing, Easting, and Elevation State Plane Grid Coordinates for stormwater, water, and wastewater features shall be provided in a format that may be incorporated into DWU’s ESRI ArcGIS® system. The Project Manager will provide more information concerning formats and expectations on request.

c. The data provided shall be referenced to the State Plane Coordinate System, Texas North Central Zone 4202, North American Datum of 1983, U.S. Survey Feet. For the horizontal coordinate system, the projected coordinate system name is: NAD_1983_StatePlane_Texas_North_Central_FIPS_4202_Feet, the geographic coordinate system name is: GCS_North_American_1988.

d. The accuracy will be at a minimum 3 cm (horizontal).

C. BASIC SERVICE REQUIREMENTS:

1. Preliminary Investigation, and Design Report (15% Milestone)

a. Meet with City and obtain design criteria, pertinent utility plans, street plans, plats and right-of-way maps, existing easement information, available reports on the applicable erosion or drainage issues, as-built plans for portions of surrounding infrastructure and other information, as available for the project area.

b. Meet with City’s Project Manager and conduct an on-site review and walk through.

SCOPE OF WORK 26-241E 11 of 16 July 2026

c. Coordinate special services for topographic/boundary survey, easement, subsurface utility engineering, geotechnical boring and testing and structural analysis as required.

2. Preliminary Design (35% Milestone):

a. Prepare preliminary construction plans and other items listed below:

Cover Sheet Project Layout Sheet(s). Scale 1” = 100.

Plan and Profile Sheet (s) with following scales:

o Stormwater Mains: 1” = 20’ (H), 1’ = 6’ (V) Tree Identification for Mitigation List of Potential Easements List of Potential Technical Specifications Copy of Geotechnical Report

Information required can be combined on sheets if the information can be clearly shown and is approved by the DWU Project Manager.

b. Provide analysis of adjacent DWU facilities to determine scope of potential repairs or upgrades to DWU systems, as applicable.

c. Coordinate with affected utilities such as water, wastewater, gas, telephone, cable TV, electric and other franchise utilities to obtain accurate information for the location of their facilities. ENGINEER to circulate preliminary plans to franchise utilities.

d. Documents and photograph current channel conditions and identify potential locations of construction access and staging.

e. Prepare preliminary opinion of probable construction cost (OPCC).

f. Provide electronic PDF format half-size set of preliminary plans (11”x17” sheets to scale) to the City for review and internal coordination.

g. Meet with the City to discuss City’s comments on preliminary plans and

OPCC.

3. Detail Design (65% Milestone):

a. Prepare detail construction plans and other items as listed below:

Cover Sheet General Notes Sheet(s) Project Layout Sheet(s). Scale 1” = 100.

Drainage Area Map (s) Plan and Profile Sheet (s) with following scales:

o Stormwater Mains: 1” = 20’ (H), 1” = 6’ (V) o Erosion Control: 1” = 10’ (H), 1” = 5’ (V) o Paving: 1” = 20’ (H), 1” = 5’ (V)

Structural Details Sheet(s) Tree Mitigation Plan, if applicable.

Engineering Calculations Opinion of Probable Construction Cost (OPCC)

Information required can be combined on sheets if the information can be clearly shown and is approved by the DWU Project Manager.

b. City Project Manager to internally distribute preliminary plans to city agencies for feedback. ENGINEER Consultant to circulate preliminary plans to franchise utilities. Franchise utility design is not included in this scope.

SCOPE OF WORK 26-241E 12 of 16 July 2026

c. Provide preliminary analysis of adjacent DWU facilities to determine scope of potential repairs or upgrades to DWU systems, as applicable.

d. Revise (as needed) the preferred alternative HEC-RAS model to reflect any design changes.

e. Prepare an outline list of special technical specifications needed for the project, as necessary.

f. Prepare an estimate of construction quantities and develop the detailed statement of probable construction cost.

g. Plan set will be provided to clearly show the Detailed Design for the project including necessary details.

h. Provide electronic PDF format half-size set of preliminary plans (11”x17” sheets to scale) to the City for review and internal coordination.

i. Assumed City internal review duration of two (2) weeks. One round of correlated comments will be provided to the Consultant.

j. Meet with the City to discuss City’s comments on detailed plans, potential easements, special technical specifications outline and OPCC.

4. Pre-Final Design (95%):

a. Prepare pre-final construction plans and other items as listed below:

Cover Sheet General Notes Sheet(s) Project Layout Sheet(s). Scale 1” = 100’ Drainage Area Map(s) Plan and Profile Sheet(s) with following scales:

o Stormwater Mains: 1” = 20’ (H), 1” = 6’ (V) o Erosion Control: 1” = 10’ (H), 1” = 5’ (V) o Paving: 1” = 20’ (H), 1” = 5’ (V)

Structural Details Sheet(s) Tree Mitigation Plan, if applicable.

Engineering Calculations Special Provision and Technical Specifications Opinion of Probable Construction Cost (OPCC)

Information required can be combined on sheets if the information can be clearly shown and is approved by the DWU Project Manager.

b. Coordinate with affected utilities such as water, wastewater, gas, telephone, cable TV, electric and other franchise utilities to obtain accurate information for the location of their facilities, as necessary. City Project Manager to internally distribute preliminary plans to city agencies for feedback. ENGINEER Consultant to circulate pre-final plans to franchise utilities. Franchise utility design is not included in this scope.

c. Provide preliminary analysis of adjacent DWU facilities to determine scope of potential repairs or upgrades to DWU systems, as applicable.

d. Revise (as needed) the preferred alternative HEC-RAS model to reflect any design changes.

e. Prepare an outline list of special technical specifications needed for the project, as necessary.

f. Prepare an estimate of construction quantities and develop the detailed statement of probable construction cost.

SCOPE OF WORK 26-241E 13 of 16 July 2026

g. Plan set will be provided to clearly show the Detailed Design for the project including necessary details.

h. Provide electronic PDF format half-size set of preliminary plans (11”x17” sheets to scale) to the City for review and internal coordination.

i. Assumed City internal review duration of two (2) weeks. One round of correlated comments will be provided to the Consultant.

j. Meet with the City to discuss City’s comments on detailed plans, potential easements, special technical specifications outline and OPCC.

5. Final Design Deliverable (100% Milestone) Final plan and cost estimate shall be prepared for each location independently, as applicable. The plans shall be in conformance with all applicable COD/DWU Standards, Policies, and Criteria, etc. Plans shall be created in a professional manner and be adequate to advertise for construction bids. Final deliverables shall include but not be limited to the following:

a. Prior to final submittal, design package for each site to be provided to the City for review and final comments. Assumed City internal review duration of two (2) weeks. One round of correlated comments will be provided to the Consultant. No meeting with the City is included with this interim submittal.

b. Prepare final design plan and profile sheets as shown in the COD/DWU Drafting Resource Files available from the following location:

http://dallascityhall.com/departments/waterutilities/Pages/dwu_design_standards _drafting_resource.aspx

c. Confirm incorporating all comments from the City.

d. Confirm incorporate comments from the franchise utility companies.

e. Finalize construction plans for proposed improvements.

f. Finalize plan and profile designs for DWU water and wastewater relocations, other utility relocations and adjustments, as applicable.

g. Finalize special technical specifications and special conditions (if any).

h. Incorporate standard details into the construction plans and prepare additional details as required.

i. Meet with home and/or property owners at prospective construction access locations. Coordinate between owners and City regarding this access and the City’s preparation of temporary access and construction easements, if required.

Engineer will provide the Contractor and the City with site access information and agreement concepts.

j. Provide necessary Storm Water Pollution Prevention Concept Plans in accordance with the City requirements.

k. Prepare final construction quantities and prepare final Opinion of Probable Construction Cost (OPCC).

l. Submit one (1) full size, three (3) half size and an electronic set of sealed final plans, special technical specifications and final opinion of probable construction cost (OPCC).

m. Deliver one set of sealed Mylar design drawings and special specifications to the City.

D. SPECIAL SERVICE REQUIREMENTS:

1. Topographic/Boundary Survey

The Consultant shall follow provisions of Appendix C and D of DWU Water and Wastewater Pipeline Design Manual, Latest Edition and City of Dallas Public Works

SCOPE OF WORK 26-241E 14 of 16 July 2026 and Transportation Field Note Guidelines, May 2011 edition. Locate and establish control from the City’s existing benchmarks (at least two Benchmarks for each location). Benchmark file can be found here:

http://dallascityhall.com/departments/waterutilities/DCH%20Documents/pdf/benchma rk_042014.pdf. The Consultant shall utilize the DWU drafting resource files to create design files.

The Consultant shall obtain the following survey data and apply them in the development of construction plans:

a. Establish a horizontal and vertical control network and project control baseline for the project areas. The network and baseline are to be tied into the existing City control network.

b. Establish horizontal and vertical project control monumentation (a minimum of two).

c. Tie right-of-way lines and corners, buildings, fence lines, trees 4-inches in diameter and larger, edges of pavements and all other visible surface features to the project control baseline. Existing utility structures shall be located and referenced by utility name.

d. Vertical topographic information tying pavement, drives, walls, manholes (top and inverts), storm drain inlets (top and inverts), and other improvements as needed within the project areas for the design.

e. When underground utilities are exposed, tie to project control baseline.

f. Obtain topographic information including cross-sections of the existing ground features as needed for design.

g. Locate all pertinent creek features for design including top of bank, existing walls and slabs, existing buildings, fences, (within construction area) on the sites.

h. Contact utility companies to locate and uncover utilities which conflict with the proposed project. Tie uncovered utilities to the local control network.

i. Identify the street address of all adjacent properties to the proposed construction and show on drawings.

j. Provide a drawing of the project sites with 1’ contours and all located features.

2. Easements

a. Provide suitable documents and field notes necessary to acquire temporary and/or permanent easements for construction, where required by Project Manager. All field surveying and field notes shall be prepared in accordance with procedures established by the City of Dallas Surveyor as shown in DWU Water and Wastewater Procedures and Design Manual Appendix D and E.

Geotechnical Report

a. Perform geotechnical investigation for proposed design in the project area. The geotechnical engineer will take reasonable precautions to avoid damage to utilities and flatwork at the sites but will only be responsible for damages at the sites caused by their negligent acts. Submit one copy of sealed geotechnical report to the OWNER with the preliminary design plans.

b. The geotechnical report shall include, but not be limited to the following:

1) A subsurface investigation consisting of boring at the erosion site to observe general site conditions, explore the subsurface materials, obtain samples for laboratory analysis and observe short-term groundwater levels as encountered during the drilling of the borings.

SCOPE OF WORK 26-241E 15 of 16 July 2026

2) Laboratory testing on selected samples to classify soil and rock types and to determine the engineering properties of the subsurface materials.

3) Soil classification based on laboratory tests, estimation of subgrade support characteristics and recommended subgrade stabilization using lime for a rigid pavement.

4) Utilize existing geotechnical data available from the City for improvements.

5) Show geotechnical boring locations on the plan view of the construction drawings and cross reference to the geotechnical report.

3. Evaluation of Green and Sustainable Stormwater Initiatives:

Consultant shall evaluate and consider the applicability and feasibility of environmentally friendly solutions to all stormwater improvement projects. Consultant shall evaluate “green” and sustainable stormwater infrastructure alternatives in design and construction for erosion control, flood mitigation and stormwater improvement projects. These may include, but are not limited to the following, as applicable:

a. Identify opportunities for high-impact, cost-effective implementation of “green” stormwater management and sustainable materials.

b. Natural erosion prevention and potential water quality benefits, e.g. vegetation and turf reinforcement; strategic placement of boulders, crushed concrete in lieu of gabions; alternative materials to traditional concrete and rock gabion baskets.

etc.

c. Mitigating storm flows by retaining, slowing, or reducing runoff of stormwater upstream.

d. Framework for designing, developing, managing, and maintaining sustainable and resilient landscapes and supporting nature-positive design.

e. Evaluation of sustainable practices and designs under the framework of Envision, with recommendation of benefit and cost of implementation and pursuit of certification.

Consultant shall provide DWU with a technical memorandum of their findings regarding any opportunities to provide “green” and sustainable design, specification, and construction alternatives for erosion control, flood mitigation, and stormwater infrastructure improvements and relate to City of Dallas CECAP goals where applicable. Consultant shall provide adequate justification if no environmentally friendly solution is deemed practical due to site impacts, structural needs, constructability, financial and/or operational issues, etc.

4. Environmental Services

Environmental due diligence for each project location should be made to develop designs and specifications for areas impacted when required.

5. Water/Wastewater Main Design Based on design and utility information determined during sections C.1 and C.2, the consulting engineer will coordinate and identify additional services to adjust or improve Water/Wastewater systems if applicable within the project areas. Additional services will be based on City direction. Design of Water/Wastewater systems are not included in this scope.

SCOPE OF WORK 26-241E 16 of 16 July 2026

E. ADDITIONAL SERVICE REQUIREMENTS

1. Contract Services

Provide the following contract services:

a. Prepare Special Provisions and Special Technical Specification for use in Bid Specification documents, including documents consistent with TWDB State Revolving Fund requirements. DWU will prepare general Contract Specifications.

Special Provisions are only those specifications not specifically in the DWU Standard Specifications Manual, NCTCOG Public Works Construction Standards, or the City of Dallas Addendum to the NCTCOG Public Works Construction Standard.

b. Prepare Engineer’s Estimate of Probable Costs and Bid Item tabulations consistent with the DWU Bid Item and Cost Estimating Manual, Latest Edition.

This shall be provided to the Project Manager in Excel format as shown in the Probable Cost Template at:

http://dallascityhall.com/departments/waterutilities/Pages/dwu_design_standards.

aspx

c. Provide other required construction services as requested by DWU. This shall include but not be limited to: plan revisions, submittal reviews, periodic site visits, review of proposed change orders, attend pre-bid meetings, etc.

d. After completion of the design, the Consultant will be required to attend what is referred to as a “Project Partnering Session” wherein the Consultant will be expected to provide a one to two-hour presentation of the various Project Segments – the design considerations, reasons for any unusual designs, discussions of any expected construction difficulties, etc. In attendance at this meeting will be the Selected Prime Contractor, key Sub-Contractors, DWU personnel, and other interested parties. This meeting will take place at a time and place to be determined, but will usually happen from one to two months, but as many as 12 months, after the Prime Contractor has been selected through the bid process. This meeting will generally require 3 to 4 hours of participation for two to three of the Consultant’s design personnel.

e. Provide Project Manager with final information for Database through approved combined spreadsheet. DWU Project Manager will provide this form to the Consultant.

f. Deliver one set of sealed Mylar design drawings and special specifications to Project Manager.

g. Furnish files of the scanned images of the final sealed drawings and specifications with the construction records posting on a CD to Project Manager.

F. PROJECT SCHEDULE

Phase I Preliminary Investigation and Design Report, if needed (4 months)

Phase II Final Construction Plans and Technical Specifications (8 months)

Phase III Services During Bidding, if Required (4-6 months)

Phase IV Services During Construction, if Required (18 months)