Project Manual

FOR:

DITCH & DRAINAGE REPAIR- EL FRANCO LEE PARK -

SEGMENT 1

Special Note: The following items developed per the published Construction Drawings have been verified and included in the Purchasing Department’s Bid Specification Package which can be located at https// harriscountytx.bonfirehub.com/portal/. The items include:

• Scope of Work

• Special Provision to Standard

Specifications

• Special Specifications

• Supplement to General Requirements

• Contract Time https://harriscountytx.bonfirehub.com/portal/

DITCH & DRAINAGE REPAIR- EL FRANCO LEE PARK -SEGMENT 1

PURPOSE:

OCRE Engineering is seeking qualified contractors to perform ditch and drainage repair services at El Franco Lee Park. The overall project is divided into four segments; this solicitation covers the scope of work for Segment 1, as depicted in the attached drawings.

Required services may include inspection, cleaning, repair, replacement, erosion control, and other related improvements.

SCOPE OF WORK:

The Contractor shall provide all labor, materials, equipment, and supervision necessary to perform ditch and drainage repairs as directed by the Engineer.

Ditch and Drainage Work

The Contractor shall:

• Clear vegetation from ditches and channels

• Regrade and excavate to restore positive downstream stormwater flow

• Re-establish ditch and channel flow lines as directed by the Engineer

• Cut and trim vegetation without disturbing established root systems

• Repair any slope damage, rutting, or erosion caused by construction

• Restore disturbed areas through re-sodding or seeding

• All ditch and channel work shall comply with applicable Harris County specifications and project drawings.

EMERGENCY RESPONSE REQUIREMENT

Contractors shall be capable of responding to urgent and emergency service requests. For emergency callouts, Contractor must be available to mobilize within 48 hours of notification and coordinate directly with County representatives to address conditions that pose risk to public safety, property, or infrastructure.

CONTRACT TERM & NOT-TO-EXCEED AMOUNT

Total compensation under this agreement shall not exceed the agreed amount.

EVALUATION CRITERIA

Experience 30%

• Describe your relevant experience with similar drainage projects.

• List up to three (3) recent projects with scope, value, date, and reference.

Project Approach 30%

• What methods and equipment will you use for grading, stabilization, and water flow management?

• Describe how you will document and verify initial elevations, implement and control proposed grading to achieve target elevations, and provide post-construction validation to ensure proper drainage performance.

Pricing 30%

Pricing for all work, including ditch clearing, grading, restoration, and incidental tasks (erosion control, etc.).

Schedule & Capacity 5%

Confirm staff, equipment, and capacity to meet the timeline.

Compliance & Safety 5%

• Confirm required licenses

• Describe your safety approach and how you will meet all applicable County standards.

SOCCER

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SOFTBALL

FIELDS

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PAVILION

RESTROOMS &

CONCESSION

WHITE SAND

VOLLEYBALL

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SPLASH

PARK

LIGHTED

SOCCER

FIELDS

SOCCER

FIELDS

SAMPLING

PIER

OBSERVATION

PIER

OBSERVATION

TOWER

BASEBALL

FIELDS

BUTTERFLY

GARDEN

Trail (1 .1 mi.)

Trai l (0

.2 mi.)

Primative Trail (0.5 mi.)

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PLAYGROUND

AREA

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LIGHTED

BASEBALL FIELDS

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BASEBALL FIELDS

SOCCER

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WESTPARK

HARDY

EL FRANCO LEE

PARK

HARRIS COUNTY PRECINCT ONE

RODNEY ELLIS,

Commissioner

EL FRANCO LEE PARK

PARK FEATURES*

* Other features labeled in map

Restroom

Picnic Area

ParkingP

Restroom & Concession

Trail Sections-

Trail (0.2 mi. & 1.1 mi.)

Primative Trail (0.5 mi.)

Boardwalk (0.2 mi.)

EL FRANCO LEE PARK

9500 Hall Rd., Houston

- 361 Acres

- 2.3 Miles of Trails

Summer: 7 am - 7:30 pm Winter: 7 am - 5:30 pm

PAVILION HOURS -

HOURS OF OPERATION **-

Spring/Summer: 6 am - 10 pm

Winter: 6 am - 10 pm

** Park operates on the same schedule year round due to sports reservations.

SAM HOUSTON

SAM HOUSTON

C

LE

A R

C R

E E

K

Eric.Martinez Ellipse

Eric.Martinez Callout Project Area

Harris County Appraisal District, Maxar, Microsoft, HCED, City of Houston, Esri, HERE, Garmin, iPC, ming, vsalvato, epermits, City of Houston, Esri, HERE, iPC

Permits (Permit Name)

Projects (App Type)

Residential

ROW Notifications

Minor Site, Signs, and Cell Tower

Commercial Site Development

H.C. Internal Applications

Storm Repair Permits

HCITC_repository.SDE.HCAD_Parcels

7/11/2025, 1:47:10 PM

0 0.04 0.090.02 mi

0 0.07 0.150.04 km

1:2,257

Web AppBuilder for ArcGIS HCFCD | Harris County Appraisal District | HCED | HCUS-GIS, HCAD | HCPID - A&E | FEMA, HCED | ming, vsalvato, epermits | Maxar, Microsoft | City of Houston, Esri, HERE, iPC | City of Houston, Esri, HERE, Garmin, iPC |

El Franco Lee - Ditch regrading - RSO project

Eric Martinez Polygonal Line

Eric Martinez Polygonal Line 786 ft

Eric Martinez Polygonal Line 910 feet

Eric Martinez Polygonal Line 1060 ft

Eric Martinez Polygonal Line 900 ft

Eric Martinez Polygonal Line

Eric Martinez Stamp

The following information constitute formal notifications to the Contractor in the event that these issues arise during the course of the contract

May 2019

GENERAL NOTICE TO CONTRACTORS

In accordance with House Bill 1059, a minimum of 25% of the work to be performed on this project shall be performed by the Bidder.

Special Notice: By law, the original price on firm fixed price contracts may not be increased by more than 25%. The original price may not be decreased by 18% or more without the consent of the contractor. Please monitor additions to your contract -additions in excess of 25% will not be paid under any circumstances.

On public works projects, all contractors shall supply a list of all suppliers and subcontractors with addresses and phone numbers, prior to work commencing.

At the time of the scheduled preconstruction meeting, the successful bidder shall supply to the County a list of representatives signed by an Officer of the Company who are authorized to sign official documents, i.e., Purchase Orders, Change Orders, Final Estimates, etc.

In determining who is a responsible bidder, Harris County may take into account the past performance of the bidder on Harris County projects. Commissioners Court adopted a written definition and criteria for determining the performance of a contractor which may be considered in determining the responsibility of a bidder.

Harris County is using an internet-based Construction Program Management Software, e-Builder to maintain consistent administrative and technical control for its projects throughout the County. The Contractor is required to use e-Builder on this project in accordance with procedures provided by the County.

At no cost to the Contractor, the County will provide system login account(s) and provide training for Contractor personnel. The Contractor must update e-Builder with any new or changed information within 24 hours of that information becoming known to Contractor. The Contractor must have access to a computer with internet access and a scanner to use eBuilder.

NOTICE TO CONTRACTORS

ON STORM WATER QUALITY AND

ENVIRONMENTAL ISSUES

In addition to the regulatory requirements stated in the General Conditions, the Contractor shall recognize and comply with the following:

SECTION 1. STORM WATER POLLUTION PREVENTION PLANS

A. COVERAGE

Coverage under the Texas Pollutant Discharge Elimination System (TPDES)

General Permit TXR150000 for storm water discharges associated with construction activities is required for a project that disturbs 1 acre or greater (or is a part of a larger common plan of development with the potential to disturb 1 acre or greater). Coverage requires the preparation, implementation, inspection, and maintenance of a Storm Water Pollution Prevention Plan (SWPPP), in accordance with the TPDES General Permit.

B. PROJECT CLASSIFICATION

This project is classified as one of three categories listed below. The

Contractor shall be responsible for the storm water quality items, accordingly.

1. “Construction Sites That Do Not Require TPDES General Permit

Coverage” The project disturbs less than 1 acre (and is not part of a common plan of development with the potential to disturb 1 acre or more); therefore, coverage under the TPDES General Permit is not required. However, the Contractor shall implement good housekeeping measures to minimize the potential for pollutants, associated with the construction activities, to enter the storm sewer system. Item 725, “General Source Controls”, shall be implemented by the Contractor, as well as any other erosion, sedimentation, and pollution controls shown in the plans and project manual.

or

2. “Small Construction Sites”

The project disturbs 1 acre or more, but less than 5 acres, (or is part of a common plan of development with the potential to disturb 1 acre or more);

therefore, coverage under the TPDES General Permit is required. The Contractor shall implement, inspect, and maintain the Storm Water Pollution Prevention Plan shown in the plans and project manual.

Certification of a TCEQ Small Construction Site Notice (CSN) in accordance with Part II.E.2 of the TPDES General Permit is required. The Contractor, as a primary operator, as defined by TPDES General Permit, shall certify one Construction Site Notice (CSN) and provide this to Harris County at the time that the contract is awarded. Harris County (owner), as primary operator, as defined by TPDES General Permit, shall certify a second Construction Site Notice (CSN) at the time the contract is awarded. After the project is awarded, Harris County shall provide copies of the two certified Construction Site Notices (CSN) to the Contractor, and send copies to the local storm sewer operator for notification purposes. Prior to commencing construction activities, the Contractor shall laminate and post the notices on the project site in a location where they are readily available for public viewing. The Contractor shall maintain the posted notices until after completion of the construction activities and final stabilization of the project site as defined by the TPDES General Permit. When the project is completed and stabilization is achieved, as defined by the TPDES General Permit, then the Contractor shall note the date that the Small Construction Site Notice was removed from the project site. A copy of the completed Small Construction Site Notice shall be provided to the Engineer with the SWPPP records. The County shall then notify the local storm sewer operator that storm water associated with construction activities is no longer being discharged from the site.

3. “Large Construction Sites”

The project disturbs 5 acres or greater (or is part of a common plan of development with the potential to disturb 5 acres or more); therefore, coverage under the TPDES General Permit is required. The Contractor shall implement, inspect, and maintain the Storm Water Pollution Prevention Plan shown in the plans and project manual. Certification of a Notice of Intent (NOI) in accordance with Part II.E.3 of the TPDES General Permit is required and shall be completed in accordance with Harris County Specification Item Number 700. The Contractor shall not commence with any earth disturbing activities on the project site until:

• at least seven (7) days after submittal of the NOI (Harris County & Contractors) via U.S. Postal Service, or if Utilizing electronic submittal, prior to commencing construction activities,

• copies of signed NOI’s are submitted to any municipal separate storm sewer system (MS4) receiving discharge, at least seven (7) days prior to commencing construction activities. Contractor shall list in the SWPPP the names and addresses of all MS4 operators receiving a copy.

• copies of the Certified NOI’s are posted in a publicly accessible location (copies shall be laminated or placed in weather resistant display case),

• and copies (Harris County & Primary Contractors) of construction site notice for large sites (CSN) are posted in a publicly accessible location. After construction activities are complete and final stabilization is achieved (as defined by the TPDES General Permit), the Contractor shall certify one Notice of Termination (NOT) form and provide it to Harris County. Harris County shall certify a second NOT form. Harris County shall submit the two NOTs to the TCEQ and the local storm sewer system operator. After the NOTs have been submitted to the TCEQ, then the Contractor shall remove all temporary SWPPP controls, cease SWPPP inspections, and deliver copies of all SWPPP records to the Engineer who shall archive them for a minimum of three years. The final payment to the Contractor may be held until all SWPPP records are received by the Engineer.

SECTION 2. STORM WATER QUALITY MANAGEMENT PLANS

A. COVERAGE

If this project meets the definition of “new development” or “significant redevelopment” as defined in the Harris County regulations or City of Houston ordinance on storm water quality and the project is not “grandfathered” or “exempt” as defined by the regulation or ordinance, then a Storm Water Quality Management Plan (SWQMP) is required for the project, as shown in the construction plans.

B. CLASSIFICATION

This project is classified as one of three categories listed below. The Contractor shall be responsible for the storm water quality items, accordingly.

1. “SWQ Permit Within Unincorporated Harris County”

If a Storm Water Quality Management Plan with permanent storm water quality controls is shown in the construction plans and the project is located in unincorporated Harris County, then a Storm Water Quality Management Plan is required prior to the start of construction. Prior to the start of construction, the Engineer shall submit the plans and Written Storm Water Quality Management Plan to the Harris County Permits Group and obtain the necessary signatures acknowledging acceptance of the Storm Water Quality Management Plan. The Contractor shall construct the SWQMP structural controls in accordance with the construction plans, and maintain the SWQMP structural controls until completion of the project and until the Engineer can certify that the SWQMP structural controls are constructed in accordance with the plans.

2. “SWQ Permit Within City of Houston” If a Storm Water Quality Management Plan with permanent storm water quality controls is shown in the construction plans and the project is located in the jurisdiction of the City of Houston, then a Storm Water Quality Management Permit is required prior to the start of construction.

Prior to the start of construction, the Engineer shall submit to the City of Houston the construction plans, the City of Houston Storm Water Quality Management Plan Application for Permit, and all other related documents shown on the permit application and obtain the Storm Water Quality Management Permit. Prior to the start of construction, the Contractor shall post a performance bond to the City of Houston for the construction of the storm water quality structural controls. The Contractor shall post a copy of the issued permit on the project site, construct the SWQMP structural controls in accordance with the construction plans, and maintain the SWQMP structural controls until completion of the project and until the Engineer can certify that the SWQMP structural controls are constructed in accordance with the plans.

The Engineer shall submit the Storm Water Quality Permit As-built Certificate to the City of Houston and Harris County shall begin implementation of the SWQMP.

3. “Grandfathered or Exempt from SWQ Permit” or “Storm Water Quality

Bank” If a Storm Water Quality Management Plan, or permanent storm water quality feature, is not shown in the construction plans, then a Storm Water Quality Management Permit is not required prior to the start of construction because it is grandfathered, exempt, or has provided storm water quality measures through the Storm Water Quality Bank.

SECTION 3. OTHER ENVIRONMENTAL ISSUES

A. BIOLOGICAL ISSUES

In accordance with requirements under the federal Migratory Bird Treaty Act, if in the course of construction, a bird rookery, an identified special migratory bird habitat, or a nesting site is discovered on the project site, then the Contractor shall cease work in the area and immediately notify the Engineer.

In accordance with the Federal Endangered Species Act and the Texas Parks and Wildlife Code, if a biological mitigation plan for specially protected flora and fauna species has been provided within the construction plans, then the Contractor shall comply with all requirements noted within the plan.

B. WATERS OF THE UNITED STATES INCLUDING ADJACENT WETLANDS

In accordance with Section 404 and Section 401 of the Clean Water Act and Section 10 of the Rivers and Harbors Act, waters of the United States including adjacent wetlands shall not be impacted by the Contractor unless a Department of the Army Permit has been obtained from the U.S. Army Corps of Engineers for the project.

If Harris County has obtained a Department of the Army Permit for this project, a copy of the permit is provided in the project manual. The Contractor shall comply with all requirements of the Department of the Army Permit. The Contractor shall not impact any waters of the United States and adjacent wetlands greater than the area and volume shown in the permit. If the Contractor impacts waters of the United States including adjacent wetlands on the project site that exceeds the area and volume shown in the permit, then the Contractor shall be responsible for any violations that may be issued by the regulatory agencies. If the Contractor deems it necessary to impact waters of the United States including adjacent wetlands that exceed the permit, then the Contractor must first notify the Engineer and the Engineer may obtain the necessary regulatory clearances prior to allowing the additional impacts to occur.

During construction of the project, if the Contractor uses off-site areas (not owned by Harris County) for placement of borrow material, disposal of construction debris, staging of construction materials, usage as a field office, or other types of construction related activities, then the Contractor shall be solely responsible for obtaining all environmental permits for the off-site activity, as well as providing all environmental controls and compensatory mitigation requested by the permitting agency. If a regulatory violation occurs as a result of this off-site activity, then the Contractor shall be solely responsible for this violation.

C. STATE OWNED SUBMERGED LANDS

The Contractor shall not impact submerged lands regulated under the authority of the Texas General Land Office, or other local agency, without an easement agreement. If an easement agreement is necessary for the construction activities, then the easement agreement shall be obtained by Harris County.

D. CULTURAL RESOURCES

In accordance with the National Historic Preservation Act and the Antiquities Code of Texas, the Contractor shall not remove or disturb, or cause or permit to be removed or disturbed, any historical, archeological, architectural, or other cultural artifacts, relics, vestiges, remains, or objects of antiquity from the project site. In the event that such items are discovered on the project during construction activities, the Contractor shall immediately notify the Engineer. The site and the potentially significant material shall be protected by the Contractor from further disturbance until a professional examination of them can be made and/or until clearance to proceed with construction has been provided by the Engineer.

E. HAZARDOUS AND PETROLEUM SUBSTANCES

If during the course of construction, the Contractor discovers hazardous or petroleum substances or wastes on the project site, then the Contractor shall immediately cease work in the area and remove all personnel from the area. The contractor shall temporarily close the area to the public, as well; temporary fencing or caution tape shall be installed around the area. The Contractor shall notify the Engineer immediately. Work in the area shall not be permitted until the Engineer has determined that safety and environmental issues have been properly addressed.

CONSTRUCTION NOTES

A. GENERAL

1. Harris County will award the project based on the stipulated purchasing procedures and reserves the right to award to a primary and designate a secondary bidder. Due to performance issues or mutual agreement, the Contractor may be reassigned to the secondary bidder. Additionally, there may be circumstances due to the dynamic nature of work assignment, it may be advantageous to Harris County to use both Contractors to prosecute the work at the same time.

2. From time to time the contract administrator may request cost proposals or estimates from the Contractor for existing items and related items that were not included in the original contract. The Contractor is responsible for providing these estimates in a timely fashion at no cost to Harris County. A reasonable time is considered ten (10) working days from the Request for Proposal (RFP).

3. The Contractor shall notify the Harris County Engineering Department – Construction Programs Division at least twenty-four (24) hours prior to construction. Notification is to be by email to Project Engineer and Chief Inspector. Email addresses can be obtained by calling (713) 274-1568.

4. The Contractor is responsible for providing security to protect the project site, contractor property, equipment, and work in progress.

5. The Contractor is responsible for determining the staging area, arranging with adjacent property owners for the lay down and access areas. These areas must be submitted in writing for review and concurrence by the Engineer prior to commencing the work.

6. It is the Contractor’s responsibility to stockpile necessary material on-site or secured off-site at no additional expense to Harris County. All storm sewer, roadway, and channel excavation materials, if suitable, need to be used before borrow is brought on-site.

7. If the Contractor intends to obtain access, stockpile material, or store equipment outside of the easement boundaries, he is responsible for making such arrangements with the property owners, including right-of-entry.

8. Contractor shall notify all property owners a minimum of twenty-four (24) hours prior to blockage of driveways or entering of utility easements. The Contractor shall give written notifications to the neighboring residents of the anticipated work schedule, including the Contractor’s name, contact person and twenty-four (24) hour phone number. Notice shall be given at least forty-eight (48) hours prior to beginning the work at the particular site.

9. It is the Contractor’s responsibility to contact the various utility companies and have their underground and aerial systems located.

10. Paved surfaces, pavement markers and markings shall be protected from damage by tracked equipment.

11. During the contract time, meetings are required and scheduled by the Engineer.

The cost of meetings shall be incidental to the project.

12. The Contractor, with the assistance of the Engineer if necessary, shall be responsible for obtaining all applicable City, County, State and Federal permits.

13. Iron rods disturbed during construction are to be replaced by a registered public land surveyor for the original property owner at no separate pay.

14. The Contractor shall provide the construction staking. Two (2) copies of staking notes to be provided to the Engineer prior to commencing work at the particular site.

15. The County or the County’s surveyor shall provide a Benchmark or Temporary Benchmark and Survey Controls.

16. The Contractor shall maintain updated flowline drawings of the roadside ditches on site for inspection by the Engineer.

17. The Contractor shall provide for temporary fencing or other suitable barricades to prevent access to the work areas by the general public. Should it be necessary to block or obstruct the existing sidewalk on the adjacent street, the Contractor shall provide signage warning the general public and route them safely around the obstruction.

18. The Contractor shall remove and replace or reconstruct existing fences, posts, planters, trash containers, culverts, etc., per the contract as necessary to complete construction. Any items damaged during construction by the Contractor shall be replaced with equal or better at no extra pay. Trees, bushes, shrubbery, and other damaged plantings or existing lawn irrigation/sprinkler system are to be replaced within seventy-two (72) hours of removal and to be watered in thoroughly. No separate payment shall be made for these works.

19. Any mailboxes requiring removal shall be relocated so that mail service is not interrupted. No separate payment shall be made for this work.

20. The removal of any abandoned utilities required to complete the work shall be incidental and no separate payment shall be made.

21. New manholes, junction boxes, inlets, and risers are to be precast. Submit shop drawings for approval.

22. Adequate drainage shall be maintained at all times during construction.

Contractor’s activities are not to alter or change existing drainage patterns. In the event of rain, the Contractor is responsible for removing any impedance to flow, such as temporary cofferdams, sandbags and equipment from the storm sewer and drainage channels.

23. No dumping of storm sewer materials or debris will be allowed on public right-of-way. The Contractor shall remove sand/silt/debris off-site and dispose of in accordance with local, state, and/or federal laws and regulations. Removal shall be done on a daily basis. Contractor must determine a location to temporarily stockpile removed silt and debris if required.

24. Contractor may stockpile debris within the existing drainage easement for the purposes of de-watering the debris prior to removal from the site. Contractor shall provide adequate containment to prevent debris/water from entering adjoining property.

25. Contractor is responsible for cleaning streets of construction dirt and debris at close of each workday. The conditions of the road and/or right-of-way, upon completion of the job shall be as good as or better than prior to starting work.

26. For cleanup, refer to Harris County Specification Item 560. Unclean areas are unsightly and potentially hazardous, and require the use of County facilities and employee time in responding to citizen complaints. Contractor is required to remove from the jobsite all trash and excess materials accumulated as a result of this work, daily and prior to beginning work at the next jobsite. Failure to do so is a breach of this agreement and the County can terminate this Contract or assess liquidated damages on the Contractor if cleanup is not done. Liquidated damages may be assessed until cleanup has been completed to the satisfaction of the Engineer. Accrued damages may be deducted from the Contractor's monthly pay estimates.

27. Harris County will provide the work locations to the Contractor during the term of the Contract. The Contractor shall provide the Engineer the work schedule and notify the Engineer forty-eight (48) hours prior to starting work at each new site.

28. As the work proceeds, the Engineer shall verify the quality of work and check the associated quantities. Culvert repair or replacement must be completed to the satisfaction of the Engineer. Incomplete work may prevent additional work from being authorized. The Engineer shall notify the Precinct following the successful completion at each location.

29. With each application for payment request, the Contractor shall submit initial and revised construction schedule showing current and estimated future progress.

Applications for payment will not be processed without revised construction schedule.

30. The Contractor shall maintain good communication with the job inspector throughout all phases of the work. No field office or rest room is required for this project (see the Special Provisions to Harris County General Conditions).

B. CLEARING & GRUBBING AND MAINTENANCE OF FLOOD CONTROL

CHANNELS

1. The entire right-of-way of HCFCD Channels shall be cleared and grubbed, as directed by the Engineer, in accordance with Harris County Specification Item 102.

2. Establish turf grass on all disturbed areas within the channel right-of-way, except the channel bottom and where structural erosion measures are used. The minimum acceptance criteria are 75% coverage of live Bermuda grass and no erosion or rills deeper than 4 inches.

3. Work performed within the HCFCD right-of-way or easement must conform to the

HCFCD Construction Notes as follows:

A. HCFCD - Property Management Department, Development Construction Inspection Department, shall be notified at least 48 hours prior to construction (713-684-4116). Submit HCFCD forty-eight (48) hours pre-construction notification form to HCFCD, 9900 Northwest Freeway, Houston, Texas 77092, Attn.: Property Management Department. A copy of the approved construction drawings or sketch of approved work is required at this time.

B. The Engineer shall submit letter and record drawings to the Harris County

Flood Control District, Construction Department, requesting inspection and acceptance of items constructed in Harris County Flood Control District Right-of-Way. Prior to requesting inspection, the drainage of right-of-way and easements shall be staked and flagged.

C. The Contractor shall be responsible for protecting, maintaining and restoring back slope drainage systems.

D. All disturbed areas within Harris County Flood Control District right-of-way, except the channel bottom, shall be seeded per Harris County Flood Control

District specification entitled "Turf Establishment" (Dry Application), or approved equal.

E. Backfill shall be compacted in lifts, no greater that one (1) foot, to the density of the undisturbed adjacent soil.

F. The Contractor shall be responsible for excavating channel flow line to design elevations as shown on the plans and downstream as necessary to insure no water is in the storm sewer during "dry" conditions.

G. The Contractor shall be responsible for maintaining flow in the channel during construction and restoring the channel to its original condition.

H. All excavated material is to be removed from Harris County Flood Control

District right-of-way. No fill is to be placed within the designated flood plain area without first obtaining a fill permit.

I. The Contractor, with the assistance of the Engineer if necessary, shall be responsible for obtaining all applicable City, County, State and Federal permits.

J. The USACE should be contacted to determine if a permit is required for this project. Copies of all permits necessary within the HCFCD easements shall be given to HCFCD at least 48 hours prior to construction.

C. CLEARING, REGRADING, AND MAINTENANCE OF ROADSIDE DITCHES

AND CHANNELS

1. The roadside ditched and channels shall be cleared of vegetation and regraded to provide positive flow of storm water downstream.

2. Generally, the ditch flow lines would be excavated approximately from six (6) inches to twenty-four (24) inches deeper than the existing flow lines. Channel flow-line re-establishment should be excavated as directed by the Engineer.

3. Roadside ditch and channel regrading work shall be in accordance with Harris County Specification Items 130, SS 1018, SS 1019 and the attached drawings, when applicable.

4. Vegetation along the roadside ditches and channels shall be cut/trimmed with extra care so as not to disturb the establish root system. The Contractor is responsible for repairing any damage to the side slopes of the ditches or channels including repairs of ruts and re-sodding/seeding at no extra pay.

5. When necessary, the Contractor shall de-water the ditch, channel, or culverts using cofferdams, pumps or other means and methods in order to facilitate inspections and repairs. There is no direct payment for the de-watering work.

The cost of construction and use of these means and methods for de-watering of the culverts or drainage ditches shall be incidental to the project.

6. The Engineer shall review the findings of the ditch, channel, and culvert assessment, and after which, he shall direct the Contractor to proceed with particular repairs.

D. CULVERT AND ROADSIDE DITCH REPAIRS

1. Culverts along the roadside ditches in this contract shall be reset or replaced to the flow line elevations provided by the Engineer. Installation of new culverts might be required as directed by the Engineer.

2. Culverts shall be constructed in accordance with Harris County Specification

Items SS 4044, SS 4051, 461 and the attached drawings. Various bid items have also been established for various tasks that are required for the completion of the construction of culverts.

3. Pavement, headwalls, sidewalks, and sodded areas that are required to be removed to facilitate culvert and ditch repairs, shall be marked by the Contractor prior to beginning the work. These areas shall be minimized by the Contractor with concurrence from the Engineer.

E. STORM SEWER REPAIRS

1. The intent of this Contract is to provide for storm sewer repairs to pipes up to 60" diameter at various locations in Precinct One. Typically the work will consist of repairs to storm sewers primarily located in residential subdivisions maintained by the Precinct. Various bid items have been estimated for various tasks related to the inspection and repair of the system, including site restoration.

2. Precinct One will provide repair locations to the Harris County Construction

Group during the term of the Contract.

3. When necessary, the Contractor shall de-water the storm sewer using cofferdams, pumps or other means and methods in order to facilitate inspections and repairs. The cost of construction and use of these means and methods for de-watering of the storm sewer or drainage channels shall be incidental. There is no direct payment for de-watering.

4. The Contractor shall provide the Engineer with a work schedule for repairs.

5. The Contractor shall notify the Engineer prior to starting work.

6. The Contractor shall coordinate with the Home Owner’s Association concerning the operation of the existing lawn irrigation/sprinkler system to adjust timing intervals so that the system does not interfere with the repair work. Location of the system and any repairs as a result of the storm sewer repairs shall be the responsibility of the Contractor. Should the Contractor damage piping they shall immediately contact the Project Inspector and cap any lines.

7. Paving, curbs, sidewalks and sodded areas, that are required to be removed to facilitate storm sewer repairs, shall be marked by the Contractor prior to beginning the work. These areas shall be minimized by the Contractor with concurrence from the Engineer.

8. Following the storm sewer repairs, the work area will be regraded, and any void areas filled with Topsoil. The soil shall be compacted to 90% standard proctor density, sodded, and restored.

9. The replacement of any removed concrete roadway, driveway, and/or sidewalk shall be done in accordance with Harris County Specification Items SS 3025, SS 3026, SS 4044, and 526.

10. The Contractor is responsible for restoring any landscaping, mail boxes, or improvements that are disturbed as a result of the repair activities at no additional cost to Harris County (incidental).

11. As the work proceeds, the HCED Inspector shall verify the quality of work and check the associated quantities. Storm sewer repairs must be completed to the satisfaction of the Engineer. Incomplete work may prevent additional work from being authorized. The Engineer shall notify the Precinct following the successful completion of the storm sewer repairs.

F. CONFINED SPACES

1. If any activities inside the existing storm sewer line are considered by OSHA to be ‘Work within a Confined Space’, then the Contractor shall follow all local, state and federal laws and regulations with respect to work in confined spaces.

2. If intended to work from inside the storm sewer outfall, the Contractor shall provide a written evacuation and safety plan, which shall be posted on the project site. Workers shall be made aware of the plan before the work proceeds and reviewed in weekly safety meetings.

3. The Contractor shall provide blowers or other machinery to provide ventilation of the storm sewer system during the repair work and inspection. Ventilation devices powered by an internal combustion engine must be exhausted / vented so that carbon monoxide of other harmful fumes is not allowed to enter the confined space. Payment for ventilation is considered incidental to the work.

4. The Contractor shall provide the workers and inspectors with portable, battery powered “sniffers” which will warn when unsafe levels of combustible oxygen, carbon monoxide, or hydrogen sulfide gases are encountered.

G. TRAFFIC CONTROL

1. The Contractor shall maintain at least one (1) lane of traffic in each direction during working hours except during flagging operation or provide detours around the construction site and provide public notification.

2. Lane closures shall be during off-peak hours only (Monday through Friday from 9 a.m. to 4 p.m.). Flaggers in radio contact are required to direct traffic during lane closures.

3. No paving excavation areas shall be left open overnight or on weekends. No separate payment shall be made for this work.

H. HYDROMULCH SEEDING

1. Due to the size of repairs, it may not be feasible to seed the repair areas using conventional equipment. Where hydromulch seeding is called for, or as directed by the Engineer, using Item 165, the minimum area that the Contractor shall charge is one (1) acre. Where small areas less than one eighth (1/8) acre are to be seeded, the Contractor shall cast a combination of rye and Bermuda grass seed, or approved mix, in order to re-establish cover. Where San Augustine, Bermuda or other sod/turf is included as a bid item, the items shall be used in conjunction with the seeding and paid for separately. Top soil, if required, is incidental for all repairs less than one eighth (1/8) acre.

NOTICE OF SPECIFICATIONS

For the construction of this project, the Contractor shall use the attached Special Provisions, Special Specifications, and Harris County Engineering Department (HCED) Specifications Book – Harris County Standard Specifications for Construction and Maintenance of Roads and Bridges, effective date September 1, 2017. The current HCED specifications may be found at the HCED website: http://www.eng.hctx.net/Portals/33/Publications/professional-services/spec/2017/2017_HC_Stand_Spec.pdf

When applicable, the Contractor shall use the Harris County Flood Control District (HCFCD) 2005 Standard Specifications Book. The current HCFCD specifications may be found at the HCFCD website: https://www.hcfcd.org/Technical-Manuals/all-documents?folderId=8625& view=gridview&pageSize=10

When applicable, the Contractor shall also use the Texas Department of Transportation (TxDOT) 2014 Standard Specifications Book. The current TxDOT specifications may be found at the TxDOT website: https://www.txdot.gov/business/resources/txdot-specifications.html

When applicable, the Contractor shall also use the City of Houston (COH) Standard Specifications. The current COH specifications may be found at the COH website:

https://www.houstonpermittingcenter.org/office-city-engineer/design-and-construction-standards http://www.eng.hctx.net/ https://www.hcfcd.org/media/1311/hcfcd_2005_specifications.pdf http://www.dot.state.tx.us/business/specifications.htm http://edocs.publicworks.houstontx.gov/documents/specifications/2014_standard_specifications.pdf http://edocs.publicworks.houstontx.gov/documents/specifications/2014_standard_specifications.pdf http://edocs.publicworks.houstontx.gov/documents/specifications/2014_standard_specifications.pdf

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SPECIAL SPECIFICATION

ITEM 1018

EXCAVATION

1018.1 DESCRIPTION.

This Item shall govern for the excavation and stripping of areas as shown on the Contract Documents or as directed. The excavation shall conform to the required lines, grades, and typical sections as shown on the Contract Documents and cross-sections.

1018.2 MATERIALS.

Materials meeting the requirements of the following Item shall be use for excavation.

A. Special Specification Item 1019 “Embankment”

1018.3 CONSTRUCTION.

General. All suitable excavated materials shall be utilized, as practical, for constructing the required roadway sections or embankments, flattening slopes, grading, backfill, etc., or as directed by the Engineer. Materials suitable for onsite use shall be defined by the Engineer and shall be used for embankment before using borrow material. Unsuitable and excess excavated materials not incorporated into the final project shall be legally disposed outside the project limits by the Contractor at his/her expense in accordance with Federal, State, and Local Regulations including all permits.

Disposal sites shall not be in environmentally sensitive areas, wetlands, floodways, or areas in the 500 year floodplain.

In cases where the Contractor has over-excavated beyond the lines and grades shown on the Contract Documents or designated by the Engineer, the Contractor shall be responsible to replace and compact the material at his/her own expense. The material shall be replaced in accordance with Special Specification Item 1019 "Embankment."

Excavated areas shall be maintained to avoid drainage obstructions and damage to the roadway section. Excavation shall be protected from rainfall and surface water. If the supporting soil is exposed to adverse wet or dry conditions, excavate deeper and/or wider to sound material at no additional cost to Harris County. Prior to such activity, the Contractor shall notify the Engineer.

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At locations of pipeline crossings, the Contractor shall suspend excavation 5 feet from the pipeline right-of-way until a company representative is present to identify pipeline locations and to further direct excavation operations. The notification to the pipeline company and the request for their representative’s attendance shall be the responsibility of the Contractor. All work and/or expenditures as a result of crossing pipeline locations shall be completed at no cost to Harris County.

The Contractor shall refer to Item 560 “Maintenance and Cleanup of the Project Site” for cleanup schedule and frequency of disposal materials. The roadbed and ditches shall be maintained in a condition to insure proper drainage at all times. Ditches shall be so constructed and maintained as to avoid damage to the roadway section.

Stripping Existing Topsoil. Strip existing topsoil to approximately 3 inches in depth or as shown on the Contract Documents for areas where existing grade is to be altered either by excavation or embankment.

Stripped topsoil shall be considered unsuitable material and shall not be used in future construction.

Channels and Other Drainage Facilities. Channels and other drainage facilities which will be maintained by Harris County Flood Control District (HCFCD) shall be governed by the applicable HCFCD standards.

A temporary construction access across a channel shall require a permit.

The Contractor shall not be authorized to construct a temporary access without securing the required permit. Any temporary construction access that crosses a channel shall be constructed to allow a continuous flow at all times. The channel flow line shall not be blocked or raised at any temporary construction access.

Excavated material shall not be permanently or temporarily stored on the channel top of bank and temporary shelves shall not be cut into the channel side slopes without the approval of the Engineer.

At locations where lateral ditches or swales enter the channel, the Contractor shall perform grading, as required, to maintain the lateral ditches or swales within the easement area as approved by the Engineer. All work and/or expenditures as a result of grading lateral ditches or swales shall be completed at no cost to Harris County.

Prior to final inspection by the Engineer, the Contractor shall remove all sediment from the bottom of the channel and dispose of this material off site. Sediment removal shall be disposed by the Contractor at his/her expense in accordance with Federal, State, and Local Regulations.

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Contesting Earthwork Plan Quantities. For earthwork Items that are designated as “plan quantity” pay items, the following procedures shall apply for contesting the plan quantities:

If, after award of the project, the Contractor believes there is an error in the estimated quantities for earthwork items as shown on the bid sheet, the Contractor shall provide, at no expense to Harris County, sufficient documentation in the form of recoverable cross-sections and supporting computations. If the Contractor is required to re-survey a portion of the project for the purpose of contesting the quantity shown on the plan, the cross-sections shall be taken at the same locations and orientation of those presented in the plan set, and using the same control points. The quantities shall be determined using the Harris County Earthwork Quantities Worksheet. The Engineer shall, at the County’s expense, designate a representative, either a Consultant’s or Harris County’s surveyor, to verify the re-survey process meets the above requirements. The Contractor’s documentation shall be provided prior to proceeding with any items of earthwork. No adjustments to the plan quantity will be allowed once any excavation, including stripping, has begun.

The Contractor may submit a written notice of protest for earthwork at any time after the award date, but shall submit all required documentation no more than 30 calendar days after the latter of the following:

A. Project start date, or

B. Establishment of horizontal and vertical control points

If the documentation provided by the Contractor is deemed by Harris County to be sufficient, and is representative of actual field conditions, then the quantities derived shall be the basis of payment.

If the documentation provided by the Contractor is deemed by Harris County to be insufficient, additional supporting information may be required at no expense to Harris County. The Contractor shall submit the additional documentation no more than 14 calendar days after being notified of the County’s request.

Incentivized Projects. The time of early completion for receiving the incentive will not be extended on any incentivized project for any reason, including any time associated with a Contractor’s protest of earthwork quantities. If the Contractor chooses to protest earthwork quantities on an incentivized project, and is successful in gaining acceptance of the revised earthwork quantities, he may be granted extra days on the project in the same manner discussed below for

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“Non-Incentivized Project” as well as revision of the plan quantity, but that result shall not affect the early completion incentive time as per the “Supplement to Harris County General Condition (For Roads, Bridges, and Related Work)”.

Non-Incentivized Project. If the Contractor’s protest of earthwork quantities is accepted, the Contract Time may be adjusted for the contract time lost due to any of the following which falls after project start date:

1. Contractor’s time for submitting the original documentation after the project start date up to a maximum of 30 calendar days.

2. Additional calendar days may be granted for any part of Harris

County’s original review period that occurs subsequent to the project start date.

3. Any additional days which were required for providing additional documentation pursuant to Harris County’s request, up to a maximum of 14 calendar days.

4. Any additional days which were required for Harris County to review additional documentation and render a decision.

If the Contractor’s protest of earthwork quantities is rejected, the Contract Time and the plan quantities shall not be adjusted.

Special Excavation. When geotechnical conditions dictate, the Engineer may direct the Contractor to remove material which will not properly support the roadway, and replace it with suitable backfill material. The backfill used to replace the unsuitable excavation shall be in accordance with Special Specification Item 1019 "Embankment."

When Special Excavation is required by the Engineer, the cubic yardage calculated will be paid as a separate Item.

1018.4 MEASUREMENT.

Excavation. Excavation shall be measured by the cubic yard in its original position as computed by the method of average end areas.

Special Excavation. Special excavation shall be measured by the cubic yard of material as computed by volumetric calculations based on actual measured dimensions of the over-excavated area.

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Grading. Grading of existing roadside ditches outside the limits of roadway cross-sections shall be measured by the linear foot along the centerline in its original condition

1018.5 PAYMENT.

The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” shall be paid for at the unit price bid for "Excavation (Roadway)," “Excavation (Channel),” “Excavation (Other Drainage Facilities),” or “Excavation (Special).” This price is full compensation for preparing and maintaining roadside ditches;

trimming of slopes; hauling and storage of excavated material for other uses; disposal of unsuitable or surplus materials including stripping;

preparation and completion of subgrade and shoulders; any necessary hauling, placing, and compacting; and furnishing all materials, tools, equipment, labor, and incidentals necessary to complete the work.

Grading. The work…