CITY OF CONROE

TECHNICAL SPECIFICATIONS

FOR

SEWER REHABILITATION

CEDAR LN & S. SAN JACINTO ST AREA

Project No. 2026-02

December 4, 2025

City of Conroe – Engineering

700 Metcalf, Conroe, TX 77301

12/04/2025

CITY OF CONROE – ENGINEERING

SEWER REHABILITATION – CEDAR LN & S. SAN JACINTO ST AREA

Project No. 2026-02 i

A. Summary of Work B. Special Notes C. Technical Specifications (Civil)

Section 00100 General Section 00100-001 Project Submittals Section 00100-002 Shop Drawings Section 00100-003 Construction Schedule Section 00100-004 Trench Safety System Section 00100-005 Control of Ground and Surface Water Section 00100-009 Temporary Construction Fence Section 00100-013 Sand Backfill Section 00100-014 Cement Stabilized Sand Section 00100-016 Hydromulch Seeding Section 00100-020 Section 00100-024

Mobilization Adjusting Manholes, Inlets and Valve Boxes

Section 00300 Sanitary Sewer Systems

Section 00300-002 Sewer Flow Control and Bypass Pumping Section 00300-003 Gravity Sanitary Sewer Section 00300-004 Fiber-Reinforced Polymer Mortar Pipe Section 00300-006 Sanitary Sewer Manholes Section 00300-009 Sanitary Sewer Service Laterals & Reconnections Section 00300-010 Non-Metallic Ring & Cover for Sewer Manholes Section 00300-011 Sewer Line and Manhole Testing Section 00300-012 Cleaning & CCTV Inspection Section 00300-020 Sanitary Sewer Rehab by Pipe Bursting Section 00300-021 Point Repair and Obstruction Removal Section 00300-022 Sanitary Sewer Rehab by Cured-in Place-Pipe Section 00300-023 Cementous Coating of Sewer Structures Section 00300-024 Calcium-Aluminate-Cement Coating of Sewer Structures Section 00300-025 Protective Coating of Sewer Structures Section 00300-026 Cure-in-Place Liner for Sewer Structures

TxDOT Specifications Refer to 2024 TxDOT Specification Book or the latest version of the specifications for other related Items not listed here.

Technical Specifications Summary of Work

Section 00100-000-A Page 1 of 2

SUMMARY OF WORK

1.0 GENERAL

1.1 SCOPE

A. This project will involve the rehabilitation of approximately 1,103 linear feet of 8-inch; and 1,102 linear feet of 10-inch sanitary sewer lines. The project will be performed mainly by pipe bursting method. The project also includes rehabilitation of approximately 7 existing manholes, the installation of approximately 3 concrete manholes, and CCTV inspection.

B. Furnish all labor, supervision, tools, equipment and materials per drawings and specifications to complete the required work. Provide all necessary equipment, connections and special items necessary to accomplish the work shown or specified even if such items are not specifically specified or shown in the drawings. Install all items provided in accordance with the specifications, the manufacturer's recommendations and the best practices of the trades involved.

C. Assume full responsibility for the means, methods, techniques, sequences, and procedures of construction to complete the project. Implement all safety measures and precautions per governing regulations, incidental to the related works. Provide, connect, test and supervise the installation of the equipment specified under the direct supervision of qualified personnel.

1.2 DESCRIPTION OF WORK

A. The following paragraphs describe the major components of the work to be completed under this Contract. This list shall not be construed as all-inclusive and shall not waive the Contractor’s responsibility to provide all necessary components of the project, either stated or implied, in full accordance with the drawings and specifications.

1) Sanitary Sewer Line Rehabilitation

a) Pre- and Post-construction CCTV Inspection and Report.

b) Pipe burst approx. 2,075 linear feet of existing sanitary sewer.

c) Rehab by CIPP method approx. 100 linear feet of existing sanitary sewer.

Locations where CIPP is required will be directed by the Engineer.

2) Cement Lining Manhole Rehabilitation.

3) Remove and replace approx. 7 manhole lid and rings.

4) Removal and Replacement of Cleanouts

Approx. 2 Sanitary sewer mains initiate with cleanouts upstream, Contractor shall replace cleanouts with precast manhole, as directed by the Engineer.

5) Reconnect sanitary sewer services using QWIKSEAL- by FERNCO or equivalent and install cleanouts in accordance with City specifications and details.

6) Traffic Controls:

a) Contractor to maintain access to all properties during construction.

7) Site Restoration

Technical Specifications Summary of Work

Section 00100-000-A Page 2 of 2

1.3 SITE ACCESS

A. The work area will be mostly within the ROW.

B. Coordinate with the property owners as needed to complete the work as shown in the plans.

C. Typical work hours are Monday to Friday 8 am to 5pm. Saturday work needs to be approved by the Engineer on or before Thursday. Sunday work will not be allowed unless under extenuating circumstances with a written notice issued by the Engineer.

2.0 PRODUCTS

Not used.

3.0 EXECUTION

Not used.

* END OF SECTION *

Technical Specifications Sewer Rehabilitation – Cedar Ln & S. San Jacinto St Area

Section 00100-000-B Page 1 of 2

II: Special Notes

1. Work Schedule Typical weekday work hours are 8am to 5pm (Monday to Friday). Contractor is allowed to work on Saturdays, however, he/she must notify the City on or before Thursday for scheduling. Working on Sundays will not be allowed, excluding in extenuating circumstances and must have written permission from the City.

2. Contractor shall provide surface protection or matting along the temporary access shown on the plan, the cost of which is incidental to the related tasks.

3. All products, materials, and shop drawings must be approved by the City prior to construction.

4. The Contractor shall submit daily reports, along with quantities of materials used, and material receipts, with reference to bid items, as applicable.

5. Contractor’s Project Superintendent shall be capable of speaking English fluently and must be available on the project at all times when work is being performed, including subcontractor’s work. The Superintendent must be available and on-call 24 hours a day.

6. Roadside ditch to remain shall be maintained and cleaned to have a positive drainage.

Ditch cleaning will be considered subsidiary to other items.

7. All roadway constructions shall maintain positive drainage by means of temporary ditch or swale. No ponding is allowed on stabilized subgrade or base. If pavement structure fails due to surface water ponding, the Contractor shall repair or replace the pavement structure as directed by the Engineer.

8. Construction of items that are not specifically addressed by the City of Conroe standards and specifications shall be in accordance with the TxDOT Standard Specifications for Construction and Maintenance of Highways, Streets and Bridges (latest version).

9. The Contractor will be responsible for any damage resulting from negligence. The Contractor will take the necessary steps to prevent these occurrences and damage to Owner’s property or adjacent properties.

10. The City has the first option to retain any salvageable materials or reject all excess materials. Materials that are not retained by the City shall become the property of the Contractor. The Contractor shall properly dispose of all excess materials off site in an approved manner.

11. Implement proper traffic control plans during construction and install all necessary signs, controls, barriers, flaggers, etc. as needed for a safe construction zone.

12. Cover work zone signs when work related to the signs is not in progress, or when any hazard related to the signs no longer exists.

Technical Specifications Sewer Rehabilitation – Cedar Ln & S. San Jacinto St Area

Section 00100-000-B Page 2 of 2

13. Final cleanup, unless shown as a separate proposal item, will be considered subsidiary to the related items. Final cleanup shall include removal of all surplus materials, debris, and necessary final grading fully restoring the site to the original or better condition.

14. No monetary claims shall be made for adverse field conditions, and/or natural disasters, but time extension for delays may be approved. Rain days must be requested with each pay application each month.

15. Contractor shall work within the limits of the right of way or easements shown on the plans. No work shall be performed outside the ROW or the easements without the Right of Entry Letter on hand.

16. Although, the trade names or brand names may have been used in the plans, proposal form or the specifications, it is intended that only the domestic products (made in USA) of equal quality will be acceptable and are subject to prior approval. “Made in USA” requirement shall apply to reinforcing steel, pipes (PVC, ductile iron, steel), fittings, joint restraints and accessories, fire hydrants and gate valves. Special equipment, specialty valves and controls are exempt from this requirement. Submittal must include a certification from product manufacturer or supplier.

17. Contractor shall notify the businesses 48-hours in advance of any construction activities that may affect the existing businesses. Driveway access to businesses shall remain open all the time. Contractor shall notify residences using door hangers or other suitable approved method.

18. Water usage – this project is covered under City’s Capital Improvement Program (CIP) and water usage fees will be waived. Setup a service account for water with the City’s Utility Billing Department (936-522-3175). Hydrant meter must be installed with a backflow preventer at the nearest fire hydrant from the job site. The Contractor shall carry water from the source of supply to the job site.

Technical Specifications Project Submittals

Section 00100-001 Page 1 Revised 3/22/2022

Section 00100-001

PROJECT SUBMITTALS

1.0 GENERAL

1.1 This section covers documents required for all Capital Improvement Projects prior to construction, during the construction and all deliverables once the project has been completed.

2.0 EXECUTION

2.1 PRIOR TO BEGINNING WORK

Submit the following items with signed agreement forms as a prerequisite to the approval of the

Agreement between the Contractor and the City.

A. Performance Bond

B. Payment Bond

C. Certificates of Insurance

D. List of Subcontractors

E. Overall Project Schedule

F. Calculations, Shop Drawing, Product Data and other information as requested by the City

2.2 DURING CONSTRUCTION

As the project progresses, submit following items in a timely manner:

A. Updated Schedules – if applicable, update project schedules as the project progresses.

B. Schedule Format – provide schedule in Microsoft Project format (preferred) that includes all activities and duration with start and finish dates.

C. Daily Reports – submit daily reports for the entire week, in pdf format, on every Monday or on the first business day.

D. Schedule of Values – submit cost breakdown for all Lump Sum items in the proposal form

E. Payment Application – Submit monthly application on or before the 25th day of each month for timely approval by the City Council

F. Request for Information (RFI) – submit RFI using City’s standard form when a clarification on plan is required or when an alternate method, alignments, designs are proposed.

G. Proposal for Change Order – the Contractor may submit a request for change order whenever a need arises. Contractor must go through an RFI process for any change order to be considered by the City. The request must be in writing and must include sufficient information to assess the need for a change in the work, the contract time or the contract amount.

2.3 PROJECT CLOSEOUT & DELIVERABLES

Once construction has been substantially completed, submit the following items before the final payment including retainage amount is released.

A. Statement of Substantial Completion and Request for Initial Certification

B. Letter of guarantee for one-year with Maintenance Bond (5% construction cost) or Performance

Bond extended to One-year after completion, issued by a Surety Company that is licensed in the state of Texas and is in good standing.

C. Consent of Surety Company to Final Payment

D. General Contractor’s Affidavit and Release

Technical Specifications Project Submittals

Section 00100-001 Page 2 Revised 3/22/2022

E. As-built drawings (redline drawings)

F. Letter of compliance with the law for Prevailing Wage Rates

G. Request for Substantial Completion

H. Proof of returned water meter to the Utility Billing, if applicable

*END OF SECTION*

Technical Specifications Shop Drawings

Section 00100-002 Page 1 Revised 3/22/2022

Section 00100-002

SHOP DRAWINGS

1.0 GENERAL

1.1 This section covers shop drawings, product data and samples that shall be submitted to the

Engineering.

2.0 REQUIREMENTS

2.1 All materials and product must be submitted to the City for review and approval prior to construction. Products or materials used without the prior approval will be rejected and must be replaced at no additional cost to the City.

2.2 Submit shop drawings, product data, and samples required by specifications and as requested by the Project Manager.

2.3 All shop drawings, and submittal data shall be in the English language, and all dimensions, weights, capacities and other measurements shall be expressed in the Standard English system of measurements. All standards and standard specifications (i.e., ACI, AISC, NEC) referenced shall be those customarily in use in the United States.

3.0 EXECUTION

3.1 Transmittal Letter/Submittal form – include transmittal/submittals form and indicate the product or material name for which approval is being requested. Indicate sequential submittal number, project title, name (s) of contractor and sub-contractors, if applicable.

3.2 Shop Drawings – shop drawings shall show sufficient details for all structural, mechanical and electrical work as applicable. Stations and elevations shall be referenced to the construction plans.

3.3 Product Data – submit manufacturer’s catalog sheets, brochures, diagrams, schedules, performance charts illustrations, and other descriptive data clearly marked to identify pertinent materials, products or models proposed for the project. Indicate all applicable reference standards such as ASTM, ACI etc.

3.4 Calculations and Drawings – calculations and drawings, when required, must be signed and sealed by a professional engineer registered in the State of Texas.

3.5 Place on the data sheet(s) all information required for submission or include the required information on separate sheet(s), or on the transmittal letter.

3.6 Product Samples – when required by specifications, submit product samples of sufficient size and quantity to illustrate clearly the functional characteristics of product or materials with integrally related parts and attachment devices; and full range of color samples.

3.7 Prepare and install field samples and mock-ups at the project site in an acceptable location when required by specifications.

3.8 Format – all submittals must be in color pdf format. All texts and drawings must be legible.

3.9 Submit via email or use appropriate electronic transmittal methods.

4.0 REVIEW & APPROVAL

4.1 City’s Project Manager and Inspector will review and process all submittals within ten (10) business days.

4.2 All submittals marked “REJECTED” must be resubmitted with corrected information.

4.3 Products submittals marked “APPROVED AS NOTED” must be installed as noted.

Technical Specifications Construction Schedule

Section 00100-003 Page 1 Revised 3/22/2022

Section 00100-003

CONSTRUCTION SCHEDULE

1.0 GENERAL

1.1 This section covers preparation and submittal of construction schedule to insure adequate planning and execution of construction activities within the Contract time.

2.0 EXECUTION

2.1 Construction schedule must include Construction Activities, duration, start and finish date and precedence.

2.2 Schedule must identify construction activities or tasks that include but are not limited to the following:

a) Major proposal items and related activities

b) Items requiring long lead-time to order/manufacture such as equipment parts, motor/machinery or pre-fabricated items

c) Items requiring engineering design/calculations and shop drawings

d) Initial acceptance inspection and addressing punch list items

e) Final inspection and deliverable submittals

3.0 Submittals

3.1 Submit construction schedule within ten (10) days of Notice to Proceed.

3.2 Format – Microsoft Project or similar format showing Activities, duration, Start/Finish dates, precedence and Gantt Chart

3.3 Submit one (1) pdf copy of construction schedule and a copy of schedule file (.mpp), if using

MS Project.

3.4 Submit revised/updated schedule when rain days or time extensions are approved by the City.

Rain days and time extensions must be approved separately by the City.

Technical Specifications Trench Safety System

Section 00100-004 Page 1 Revised 3/22/2022

Section 00100-004

TRENCH SAFETY SYSTEM

1.0 DESCRIPTION

1.1 This Section is for furnishing all labor and materials for installation and maintenance of a trench safety system.

1.2 For any trench excavation other than in solid rock, greater than five (5) feet in depth, the

Contractor shall provide a trench safety system. This trench safety system shall be in accordance with the appropriate requirements established in the Occupational Safety and

Health Administration (OSHA), Safety and Health Regulations, Part 1926, Subpart P, as published in the Federal Register, Volume 54, Number 209, dated October 31, 1989, and the

City of Conroe Ordinance #1033-87, or latest revisions - "Excavations, Trenching and

Shoring" (latest edition).

1.3 Before commencing any trench excavation, which will exceed a depth of five feet, Contractor will provide Owner with detailed plans and specifications regarding the safety systems to be utilized. Said plans and specifications shall include a certification from a registered professional Engineer, licensed in the State of Texas, indicating full compliance with the

OSHA provisions.

2.0 EXECUTION

2.1 Trench Safety System

The trench safety system shall be constructed and maintained in accordance with OSHA 2226, Trench Safety Details and Specifications, to prevent death or injury to personnel or damage to structures in or near these trench excavations.

2.2 Supervision

The Contractor shall provide competent supervisory personnel at the trench, while work is in progress to ensure that the Contractor's methods, procedures, equipment and materials pertaining to the safety systems of this item, are sufficient to meet the requirements of OSHA

Standards and Regulations.

2.3 Maintenance of Safety System

The safety system shall be maintained in the acceptable condition, or as specified by the

Contractor's Registered Professional Engineer. The Contractor shall take all necessary precaution to ensure that the safety systems are not damaged during their use. If, at any time during its use, a safety system is damaged, personnel shall be immediately removed from the trench or excavated area and the safety system repaired. The Contractor shall take all necessary precautions to ensure that no loads, except those included in the safety system design, are imposed on the excavation.

2.4 Inspection

The Contractor shall make daily inspections of the Trench Safety Systems to ensure that the system meets OSHA requirements. Daily inspection is to be made by a "competent person" provided by the Contractor. If evidence of possible cave-ins, or slides, is apparent, all work in the trench shall cease until the necessary precautions have been taken by the Contractor to safeguard personnel entering the trench. It is the sole duty, responsibility and prerogative of

Technical Specifications Trench Safety System

Section 00100-004 Page 2 Revised 3/22/2022 the Contractor, not the Owner or the Engineer, to determine the specific applicability of the designed trench safety systems to each field condition encountered on the project. The

Contractor shall maintain a permanent record of daily inspections.

2.5 Indemnification:

The Contractor shall indemnify and hold harmless the City, its employees and agents, including the Engineer, from all damages, costs (including, without limitation, legal fees, court costs and the cost of investigation), judgments or claims by anyone for injury or death of persons resulting from the collapse or failure of trenches constructed under this contract.

3.0 MEASUREMENT & PAYMENT

3.1 Measurement will be per linear foot along the centerline of trench. Unit price is full compensation for furnishing all equipment, labor, materials, superintendence, and incidentals.

Technical Specifications Control of Ground and Surface Water

Section 00100-005 Page 1 Revised 3/22/2022

Section 00100-005

CONTROL OF GROUND AND SURFACE WATER

1.0 GENERAL

1.1 This section shall govern means, methods, techniques, sequences and procedures of construction to install wellpoint-dewatering system to facilitate construction of underground utilities and surface water control.

1.2 Install properly designed dewatering system to:

1) Reduce the groundwater static level to reduce effectively, the lateral forces on excavation shoring from either hydrostatic pressures or lateral forces.

2) Reduce the groundwater static level to provide stable excavation subgrade.

3) Prevent failure or heaving from the bottom of excavations.

4) Direct surface water away from the excavation or eliminate the surface water, as a potential problem.

1.3 Dewatering system shall be installed with filter bags at the discharge end of pipe to collect suspended sand and silt.

2.0 REFERENCES

2.1 Federal Regulations, 29 CFR Part 1926, Standards-Excavation, Occupational Safety and Health

Administration (OSHA).

2.2 Federal Register 40 CFR (Vol. 55, No. 222) Part 122, EPA Administered Permit Programs

(NPDES), Paragraph 122.26(b)(14) Storm Water Discharge.

3.0 SUBMITTALS

3.1 Submittals shall conform to the requirements of Section 00100-001 and Section 00100-002.

3.2 Submittals shall include following:

1) Dewatering equipment – pumps, onsite power generator, pipes, dewatering bags etc.

2) Dewatering Bag – include size, flow rate, sediment capacity and other relevant information.

3) Schematic layout or drawing for dewatering system

4.0 CONSTRUCTION

4.1 Groundwater control

1) Install well points to lower the piezometric water level to a point that will allow excavation to proceed in a workable and safe condition (normally 2 to 3 feet below subgrade).

2) Implement and operate dewatering system few days or longer before excavation begins.

3) Install dewatering wellpoints outside the limits of excavations to allow enough workspace for excavation.

4) Conduct daily maintenance and observation of the ground water control system.

5) Replace inoperable or damaged system components as necessary to maintain operation.

6) Keep monitoring system piping accessible for observation.

Technical Specifications Control of Ground and Surface Water

Section 00100-005 Page 2 Revised 3/22/2022

7) Remove trapped sand/silt from the filter bags and maintain as necessary.

4.2 Surface water control

1) Intercept surface water and divert it away from excavations. This includes temporary works required to protect adjoining properties from surface drainage caused by construction operations.

2) Divert surface water and seepage water into sumps and pump it into drainage channels, settling basins or storm drains.

5.0 MONITORING

5.1 Monitor water elevation daily to evaluate performance of the dewatering systems. Visually monitor discharge from dewatering systems for the first few days to determining if soil particles are being removed by the systems.

5.2 If soil particles are being pumped beyond first 12 hours well must be redeveloped, tested or plugged properly.

6.0 MEASUREMENT & PAYMENT

6.1 Trench dewatering will be measured by the linear foot along the centerline of the utility being installed or unit of measure shown in the bid form and regardless of the duration of dewatering operation. Unit price is full compensation for designing dewatering system, dewatering plan, labor, materials and equipment and incidentals.

Technical Specification Temporary Construction Fence

Section 00100-009 Page 1 Revision 3/22/2022

Section 00100-009

TEMPORARY CONSTRUCTION FENCE

1.0 DESCRIPTION

1.1 This Item shall govern for the materials to be furnished and for the installation, maintenance and removal of temporary construction fence of the type shown on the plans. Temporary construction perimeter fence shall be installed at the locations shown on the plans and as directed by the

Engineer.

1.2 Fence types: Following prefabricated fence types shall be used as specified on the plans:

A. Galvanized Steel Chain-link Fencing on steel frame with flat base T-stands

B. Galvanized Steel Barricade Fencing with flat base T-Stands

C. Plan designated Type – provide temporary fence as shown by the plans

2.0 MATERIALS

2.1 Galvanized Steel Chain-link Fencing

A. Furnish and install 6-ft tall, pre-fabricated panels with all necessary hardware. Panels shall be free standing, where necessary and must have option for interlocking for continuous installations.

B. Mounting Base – provide flat base T-stands or similarly designed fence base to minimize trip hazard, where specified on the plans.

2.2 Galvanized Steel Barricade Fencing

A. Furnish and install 43” tall (min.) pre-fabricated panels with all necessary hardware. Panels shall be free standing, where necessary and must have option for interlocking for continuous installations.

B. Mounting Base – mounting base shall be T-base type and must be designed to minimize tripping hazard, when required on the plans.

2.3 Other materials as specified on the plans or details

3.0 CONSTRUCTION

3.1 Install temporary construction fence as shown on the plans or as directed in the field.

4.0 MAINTENANCE

4.1 Temporary construction fence shall be maintained in good condition for the duration of construction. All necessary work and materials to maintain the integrity of the fence shall be provided. This type of routine maintenance shall not be paid for directly but will be considered subsidiary to the fence.

5.0 MEASUREMENT & PAYMENT

5.1 Measurement will be by the linear foot of fence, measurement being made along the centerline of the top of the fence including all access gates.

5.2 Unit price is full compensation for furnishing, placing and maintaining the fence for the project duration, removal at the end of the project, attachment hardware; access gates and for all labor, tools, equipment and incidentals.

Technical Specifications Sand Backfill

Section 00100-013 Page 1 Revised 3/22/2022

Section 00100-013

SAND BACKFILL

1.0 GENERAL

1.1 Scope

This item specifies furnishing, placing, manipulation, compacting and completing in-place, Sand as a bedding and backfill material for water and sewer lines, as construction fill for certain excavation areas, as construction fill for ruts, holes and other similar conditions; as a fill material for project clean-up.

1.2 Submittals

A. Submit source information for sampling and testing of sand backfill

B. Submittals shall conform to the requirements of Section 00100-001 Submittals

2.0 MATERIALS

A. Bank Sand – provide durable bank run sand classified as SP, SW, or SM by Unified Soil

Classification System (ASTM D2487) meeting following requirements:

i. Less than 15% passing #200 sieve when tested in accordance with ASTM D1140. Amount of clay lumps or balls may not exceed 2%.

ii. Material passing #40 sieve shall have Plasticity Index (PI) of less than or equal to 7 when tested in accordance with ASTM D 4318.

3.0 CONSTRUCTION

A. After the utility trench has been excavated to the design grade, bank sand shall be placed and compacted, either as bedding or backfill material, as shown on the plan, described in these specifications or as directed by the Engineer.

B. Bank sand shall be placed in layers not exceeding 8-inches. It shall be compacted with mechanical vibratory tamps to maximum dry density in accordance with ASTM D698 at a moisture content ranging from optimum to three percentage points above optimum. Water flooding will not be permitted.

4.0 TESTING

A. Laboratory technician will determine the moisture density relationship for each material proposed for use as backfill, in accordance with ASTM D698. In place density will be determined in accordance with ASTM D2922 or D1556, and with each type of construction.

B. For walls and trenches, determine the in-place density for each 200 feet of wall or trench, for each lift of fill placed.

5.0 MEASUREMENT & PAYMENT

A. Sand for utility bedding & backfill will be incidental to the related items.

B. Sand backfill, if shown as a separate bid item, will be measured by the cubic yard. Unit price is full compensation for material, labor, equipment and incidentals.

*END OF SECTION

Technical Specifications Cement Stabilized Sand

Section 00100-014 Page 1 Revised 3/22/2022

Section 00100-014

CEMENT STABILIZED SAND

1.0 GENERAL

1.1 SCOPE

This section shall govern furnishing all labor, materials, tools, equipment and supervision to install cement stabilized sand for backfill.

1.2 QUALITY ASSURANCE

A. Materials must be supplied by plants which are certified in accordance with Certifying

Procedures contained herein.

B. Certification

(1) Certification is to be performed by a laboratory certified by either the Cement

Concrete Reference Laboratory (CCRL) or the American Association of

Laboratory Accreditation (AALA).

(2) Certification is to be in the form of a letter report from the laboratory stating that the laboratory has done the following.

a) Inspected all scales for a Seal of Calibration.

b) Measured the rate of feed for sand and cement equipment.

c) Tested sand from the stockpile for gradation and Plasticity Index.

d) Taken two samples of cement stabilized sand for cement content analysis.

e) Inspected the time stamping facilities.

f) Inspected the equipment and confirmed its operation to be in accordance with Manufacturer's recommendations.

(3) The report will further state that all the test and inspection results indicate that a quality product meeting these specifications can be produced at the plant.

(4) Inspection and test are to be performed at the Plant Operator's request and expense. Certification reports are to be filed at the laboratory for distribution as requested by the Plant Operator. An inspection report file will be created for each plant inspected.

(5) Certification shall be valid for 30 days, after which the Plant Operator shall request inspection from a laboratory other than the one having performed the most recent inspection.

1.3 DESIGN REQUIREMENTS

A. Cement-Sand mixture shall produce minimum compressive strength of 100 psi in 2 days.

B. Design shall be based on strength specimens molded in accordance with ASTM D558 at moisture content within 3% of optimum moisture content and within 4 hours of batching.

Section 00100-014 Page 2 Revised 3/22/2022

C. Determine minimum cement content from production data and statistical history.

Provide no less than 2-sacks of cement per ton of dry sand.

1.4 SUBMITTALS

A. Submittals shall be in accordance with the requirements of TS 01 Submittals.

B. The Contractor shall submit a current Plant Certification Report each month in which

Cement Stabilized Sand will be installed.

C. Furnish stamped delivery tickets at the time of delivery which show producer's name, specified cement content of stabilized sand, and date and time of batching.

2.0 PRODUCTS

2.1 MATERIALS

A. Sand

i. Provide natural, manufactured, or combination of natural and manufactured sand conforming to the grading requirements shown below when tested in accordance with ASTM C136:

Sieve Percent Passing

3/8” 100

#4 95 – 100

#8 80 – 100

#16 50 – 85

#30 25 – 60

#50 10 – 30

#100 2 – 10

ii. Limit deleterious material as specified below:

Description Limit

Weight of Clay Lumps (ASTM C 142) < 0.50 %

Lightweight pieces (ASTM C123) < 0.50%

Organic Impurities (ASTM C40) Color no darker than standard color

iii. Plasticity Index (PI) shall be less than or equal to 4 when tested in accordance with

ASTM D4318

B. Cement – Type I Portland Cement conforming to ASTM C150.

C. Water – Potable and free of oils, acids, alkalies, organic matter, or other deleterious substances meeting requirements of ASTM C94.

2.2 MIXING

A. Add required amount of water and mix thoroughly in pugmill-type mixer.

B. Stamp batch ticket at plant with time of loading. Mixture will be rejected if not placed and compacted within 4 hours after mixing.

Section 00100-014 Page 3 Revised 3/22/2022

3.0 EXECUTION

3.1 PLACING

A. Place material within four hours from the time stamped on delivery tickets.

B. Place cement stabilized sand backfill per plan details compacted to minimum 95 % standard density per ASTM D698 as specified in the plans.

3.2 TESTING & ACCEPTANCE

A. One sample of cement stabilized sand shall be obtained for each 150 tons of material placed per day with no less than one sample per day of production. Random samples of delivered cement stabilized sand shall be taken in the field at point of delivery in accordance with ASTM 3665.

B. Specimens will be tested for compressive strength in accordance with ASTM D1633, Method A. Two specimens will be tested at 48 hours plus or minus 2 hours and two specimens will be tested at 7 days plus or minus 4 hours.

C. Strength level of material will be considered satisfactory if the average 48-hour strength is greater than 100 psi with no individual strength test below 70 psi.

D. Materials placed that fail to meet the requirements, as determined by tests, shall be removed and replaced at no additional cost to the Owner.

4.0 MEASUREMENT AND PAYMENT

4.1 Cement stabilized sand, if shown as a separate item, will be paid by the Cubic Yard.

Cement stabilized sand for storm sewer bedding and backfill or where not shown as separate pay item, will be incidental to the related work items.

4.2 Unit price is full compensation for material, delivery, placement, compaction, labor, equipment, tools and incidentals.

Technical Specification Hydromulch Seeding

Section 00100-016 Page 1 Revised 3/22/2022

Section 00100-016

HYDROMULCH SEEDING

1.0 GENERAL

1.1 Scope

A. This section shall govern furnishing labor, materials, equipment, tools, and performing all work necessary for topsoiling, smoothing, seeding, fertilizing, watering, maintenance, and cleanup of all areas disturbed during construction.

1.2 Submittals

A. Submittals shall be per Section 00100-001

B. Provide product information including seed mix, fertilizers and applicator equipment etc.

2.0 MATERIALS

2.1 Seed – all seed must meet the requirements of U.S. Department of Agriculture Rules and

Regulations as set forth in Federal Seed Act and Texas Seed Law. Seed shall be certified 90 percent pure and furnish 80 percent germination and meet the following requirements:

1) Rye – fresh, clean, annual Rye grass (Gulf) seed mixed in labeled proportions. As tested, minimum percentages of impurities and germination must be labeled. Deliver in original unopened containers.

2) Bermuda – extra-fancy, treated, lawn type common Bermuda. Deliver in original, unopened container showing weight, analysis, name of vender, and germination test results.

3) Wet, moldy, or otherwise damaged seed will not be accepted.

2.2 Fertilizer – Fertilizer shall be dry and free flowing, inorganic, water-soluble commercial fertilizer, which is uniform in composition. Deliver in unopened containers, which bear the manufacturers guaranteed analysis. Caked, damaged, or otherwise unsuitable fertilizer will not be accepted. Fertilizer shall contain minimum percentages of the following elements:

1) Nitrogen: 15 Percent

2) Phosphoric Acid: 15 Percent

3) Potash: 15 Percent

2.3 Mulch – mulch shall be virgin wood cellulose fibers from whole wood chips having a minimum of 20 percent fibers 0.42 inches in length and 0.01 inches in diameter.

2.4 Mulch shall be dyed green for coverage verification purposes.

2.5 Soil Stabilizer – provided Terra-Blend with Tacking Agent 3 or approved equal.

3.0 EXECUTION

3.1 Preparation

1) Prepare all disturbed areas by placing top soils free from undesirable organic or inorganic materials, including stones, hard clay lumps or other debris.

Technical Specification Hydromulch Seeding

Section 00100-016 Page 2 Revised 3/22/2022

2) Do not perform work if current or immediate future weather conditions are not satisfactory.

3.2 Application

1) Seed – provide appropriate type of seed mix and apply uniformly at the rate shown below:

Seed Mix Application Rate

(lbs/ac)

Application

Date

Hulled Common Bermuda Grass 98/88 40 Jan 1 to Apr 15

Unhulled Common Bermuda Grass 98/88 40

Annual Rye Grass (Gulf) 50

Hulled Common Bermuda Grass 98/88 40 lbs. Apr 15 to Oct 1

Hulled Common Bermuda Grass 98/88 40 Oct 1 to Jan 1

Unhulled Common Bermuda Grass 98/88 40

Annual Rye Grass (Gulf) 30

2) Fertilizer – apply uniformly at a rate of 600 pounds per acre.

3) Mulch – apply uniformly at a rate of 2,000 pounds per acre.

4) Soil Stabilizer – apply uniformly at a rate of 40 pounds per acre.

5) Suspend all operations under conditions of drought, excessive moisture, high winds, or extreme or prolonged cold. Obtain Project Manger’s approval before resuming application.

Work affected by the weather will not be paid.

3.3 Maintenance

1) Maintain grassed areas by watering, fertilizing, weeding, and trimming as required to establish and sustain minimum 75% of turf cover on all disturbed areas.

2) Stablished coverage will be verified by the City Inspector. Areas that do not have an acceptable turf shall be reseeded at no additional cost to the City.

3) Replace seeded areas damaged by Contractor's operations at no cost to the City.

4.0 MEASUREMENT & PAYMENT

4.1 Measurement will be by the squared yard, acre or as shown by in the bid form. Unit price is full compensation for furnishing materials, including water for hydro-seeding and hydro-mulching operations, mowing, labor, equipment, tools, supplies and incidentals. Watering and fertilizer will not be paid for directly but will be subsidiary to this item.

Technical Specification Mobilization

Section 00100-020 Page 1 Revision 2/26/2025

Section 00100-020

MOBILIZATION

1.0 General

1.1 Scope

A. Establish and remove offices, plants, and facilities. Move personnel, equipment, and supplies to and from the project or the vicinity of the project site to begin work or complete work on Contract Items.

1.2 Lump Sum Uni Price

A. Limit unit price bid for mobilization to a maximum of 5% of the Construction Amount.

Construction Amount = (Total Proposal Amount – Mobilization Lump Sum)

1.3 Cost Breakdown

A. Provide cost breakdown for payment as listed below.

1) Insurance, bonds, permits etc. – per lump sum

2) Mobilization of labor & equipment, preparatory works etc. – per lump sum

3) Onsite health and safety setup – per lump sum

4) Surveying and staking ROW, Easements etc. – per lump sum

5) Submittals and Scheduling – per lump sum

6) Project Sign – quantity as shown on the plans

2.0 Execution (not used)

3.0 Payment

3.1 Partial payments of the lump sum bid for mobilization will be as follows.

A. Insurance, bonds, permits etc. – payment will be made upon presentation of a paid invoice for the payment bond, performance bond, and required insurance. The combined payment for bonds and insurance will be no more than 10% of the mobilization lump sum or 1% of the total Contract amount, whichever is less.

B. Mobilization of labor & equipment, preparatory works etc. – payment will be made once labor & equipment has been mobilized for preparatory tasks.

C. Onsite health and safety setup – Payment will be made upon verification of facility setup related to onsite health and safety. Daily reports are required.

D. Surveying and staking – payment will be made upon verification of ROW/Easement, alignment staking. Daily reports are required.

E. Submittals and Scheduling – payment will be made upon verification of receipt of schedules and product data submittals.

F. Project sign installation – payment will be made upon verification of project sign installation.

Technical Specifications Adjusting Manholes, Inlets and Valve Boxes

Section 00100-024 Page 1 Revised 12/21/2022

Section 00100-024

Adjusting Manholes, Inlets and Valve Boxes

1.0 General

1.1 Scope

This section includes adjusting existing manholes, inlets or valve boxes located on street pavement, driveways or other paved areas to match new finish grade surface.

1.2 Reference Standards

i. TxDOT Standard Specifications, Item 479 and related items

ii. ASTM C913 – Standard Specification for Precast Concrete Water and Wastewater Structures

iii. ASTM A48 – Standard Specification for Gray Iron Castings

iv. ASTM A536 – Standard Specification for Ductile Iron Castings

2.0 Submittals

2.1 Submittals shall conform to the requirements of Section 00100-01 Submittals and Section 00100-002 Shop Drawings.

3.0 Materials

3.1 Existing Cast Iron rings, covers, frames and grates – reuse existing cast iron rings, covers, frames and grates if they are in good condition as verified by the City representative. Replace existing damaged castings with standard castings as shown on the plans or as directed by the City representative.

3.2 Grade Adjustment Rings – provide new precast concrete, precast polymer concrete or other approved grade rings to adjust rim elevations to match the finish grade of new pavement. Apply high-build epoxy coating (min. 120 mil DFT) on all adjusted sections of sanitary sewer manholes to provide corrosion protection.

3.3 Water Valve Boxes – reuse existing valve box & lid as verified by the City representative.

Replace existing damaged castings with standard castings as shown on the plans or as directed by the City representative.

3.4 Mortar – mortar shall conform to the specifications of TxDOT DMS-4675.

3.5 New Cast Iron rings, covers, frames and grates – new rings, covers, frames and grates shall conform to the shape and dimensions shown on the plans and City’s Standard details. Provide grey iron castings in accordance with ASTM A48 Class 35B and AASHTO M306 for traffic service applications. Ductile iron castings shall conform to ASTM A536, Grade 70-50-05. All frames, grates and covers subject to traffic loading or within the ROW shall meet or exceed H20 proof-load requirements of AASHTO M306. All covers shall carry “City of Conroe” logo per City’s Standard Details.

4.0 Construction

4.1 Perform all work in accordance with the related specifications of Section 200, Section 300 and Section 400.

4.2 Do not cover manhole covers or valve boxes during asphalt overlay; remove excess asphalt and clean the lids free of asphalt.

Technical Specifications Adjusting Manholes, Inlets and Valve Boxes

Section 00100-024 Page 2 Revised 12/21/2022

4.3 Saw-cut pavement around the structure and carefully remove existing rings, covers, frames, grates or valve boxes to be reused. Clean the castings to be reused to be remove of all foreign materials and debris at contact areas. Dispose of unused removed material in an approved manner.

4.4 Lowering the top of Manholes or Inlets – remove existing grade rings as necessary to match new finish grade of pavement and install existing or new ring, cover, frame or grate. Install concrete pad around the top of manholes or inlets as shown on plan details.

4.5 Raising the top of Manholes or Inlets – clean the top surface of existing grade ring or structurer and install precast rings, as necessary, to achieve final grade. Install concrete pad around the top of manholes or inlets as shown on plan details.

4.6 Adjusting Water Valve Boxes – reset existing valve box to match new finish grade of the pavement. Provide compacted cement stabilized sand backfill as necessary to reset valve box or install new valve box. Install concrete pad around the valve box as shown on plan details.

4.7 All constructions for adjusting manholes, inlets and valves must be suitable for AASHTO H20 live loads.

5.0 Measurement & Payment

5.1 Adjustment of manholes, inlets and valves will be measured by each.

5.2 Unit price is full compensation for materials, including backfill as required, including excavation, new adjustment rings, new castings (where shown on the plans), tools, equipment, labor, and incidentals.

Technical Specifications Sewer Flow Control and Bypass Pumping

Section 00300-002 Page 1 Revised 8/15/2022

Section 00300-002

SEWER FLOW CONTROL AND BYPASS PUMPING

1.0 GENERAL

1.1 Scope

A. This covers the sewer flow control procedures for bypass pumping. The Contractor shall provide all material, equipment, labor and services necessary to perform the work in accordance with the items of this section.

B. When an existing section of sewer line or a manhole is being rehabilitated, an uninterrupted sewer flows shall be maintained across the section of sewer or manhole under rehabilitation by providing a bypass system.

C. Sewer flows control may be utilized for a limited time period, when approved by the City.

D. Sewer flows shall not exceed five (5) percent of the pipe diameter for the respective line sizes as measured in the manhole when performing television inspection.

E. Maximum Depth of Flow for Joint Sealing:

6" – 12" Pipe 40% of pipe diameter

15" – 24" Pipe 45% of pipe diameter

>24" Pipe 50% of pipe diameter

F. The design and installation of the necessary systems as well as the operation of the temporary pumping systems (if necessary) shall be the Contractor’s responsibility.

1.2 Submittals

A. The Contractor shall submit the following information for approval prior to beginning the rehabilitation work:

1) Detailed procedures for handling peak estimated flow

2) Schedule for controlling flow

3) Listing of equipment needed for flow control

4) Operation plan

5) Emergency procedures

6) Traffic Control Plan when road/lane closure is necessary

7) Shop drawings of plug, bypass pump and pipeline locations (if bypass pumping is required)

8) Bypass pump size, capacity, number of each pump to be onsite (including standby equipment) and power requirements (if bypass pumping is required)

9) Bypass pipeline sizes and material types (if bypass pumping is required)

2.0 EXECUTION

2.1 Flow Control Precautions

A. Whenever flows in a sewer line are blocked, plugged or bypassed, sufficient precautions shall be taken to protect the sewer lines from damage that might be inflicted by excessive sewer

Section 00300-002 Page 2 Revised 8/15/2022 surcharging. Further precautions shall be taken to ensure that sewer flow control operations do not cause flooding or damage to public or private property being served by the sewers involved.

B. Any accidental discharge of sewer to ground must be reported to the City’s Utility Manager immediately for reporting to TECQ within strict timelines.

C. In situations where flow is running through an open trench during a sewer repair or replacement, the Contractor shall take precautions to ensure that debris, bedding/backfill material, sediment, etc. do not enter into the sewer system possibly causing damage to downstream pump stations.

In the event debris, bedding/backfill material, sediment, etc. does enter the downstream sewer system due to Contractor’s negligence, the Contractor shall be responsible for cleaning and videoing the downstream system and also any damage to the downstream pump station equipment at no additional cost to the City.

2.2 Plugging & Blocking

A. A sewer line plug shall be inserted into the line at a manhole upstream for the section being inspected. The plug shall be so designed that all or any portion of the sewage flows can be released. During the inspection portion of the operation, flows shall be shut off or reduced to within the maximum flow limits specified in Subsection 2.0.

B. After the Work has been completed and restricting the flow is no longer needed for the work, then the flow shall be restored to normal. Flow shall be restored by removing the plugs in an order that permits flow to slowly return to normal without surcharging or causing other major disturbances downstream.

C. Temporary plugs shall be removed and the flow restored to normal at the end of each working day. If downstream work is not or cannot be completed during the workday then the Contractor shall be required to provide, operate, and maintain bypass pumping system on a 24 hour basis.

D. The Contractor shall use bypass pumping if the work cannot be scheduled or cannot be completed at a time when flow is within the flow levels specified by Paragraph 2.0.

2.3 Flow Elimination

A. Sewer flow shall be completely eliminated when required for sewer pipe replacement, structural concrete repairs in deteriorated manholes, or installation of cured-in-place pipe.

B. Flow elimination may be accomplished by temporary shutdown of pump stations where possible, or by plugging upstream sewers and pumping of flows, if required. The Contractor shall coordinate with the City of Conroe, Public Works Department for temporary shutdown of pump stations if flow elimination is necessary.

C. All requests of the Contractor to eliminate or adjust the flow within the system shall be made in writing to the City. The City and the Contractor recognize and acknowledge that the elimination and/or adjustment of the flow are a cooperative effort and that the time and effort required achieving the desired flow varies. The City and the Contractor declare and agree that Contractor shall not be allowed, due, or paid any additional compensation, whatsoever, for Contractor's work, effort, time, material, labor, rentals, equipment, expenses, etc., during, as a result of, or arising from the elimination or adjustment of the flow.

Section 00300-002 Page 3 Revised 8/15/2022

2.4 Pumping & Bypassing

A. The Contractor shall obtain approval and secure all permits for placement of temporary bypass pumping system and pipeline within public right-of-way.

B. Bypass pumping may be required whenever pump stations are shut down or flow in gravity sewer lines are restricted or blocked. The Contractor shall supply the necessary pumps, conduits, and other equipment to divert the flow around the pump station, restriction, blockage, or other structure in which work is to be performed. The Contractor shall coordinate with the City of

Conroe Public Works Department for temporary shutdown of pump stations if flow elimination is necessary.