[A]_MWWTP_Utility_Water_Tunnel_piping_-_Specifications_-_UPDATED_-_260625.pdf

Charles County, Maryland

Mattawoman WWTP Utility Water

Tunnel Piping Contract No. 21-19

November 2024

PERMIT SUBMITTAL

NOT FOR CONSTRUCTION

Whitman, Requardt & Associates, LLP Engineers· Architects· Environmental Planners Est. 1915

CHARLES COUNTY, MARYLAND

MATTAWOMAN WWTP UTILITY WATER TUNNEL PIPING

TABLE OF CONTENTS

(* - Refer to County Standard Specifications)

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Table of Contents TC-1

DIVISION 1 GENERAL REQUIREMENTS

Section 01100 Mobilization* 01106 Construction, Coordination and Sequencing 01200 Project Meetings 01300 Submittals 01315 CPM Construction Schedules and Reports 01400 Quality Control 01410 Maintenance of Traffic* 01411 Traffic Control Plan for Maintenance of Traffic* 01500 Protection of the Environment* 01510 Temporary Utilities 01600 Materials and Equipment 01710 Cleaning Up 01740 Warranties and Bonds 01800 Temporary Facilities and Environmental Protection

DIVISION 2 PUBLIC FACILITIES AND SITE WORK

Section 02011 Subsurface Investigation * 02110 Clearing and Grubbing * 02120 Tree Protection* 02130 Adjusting and Replacing Fences, Shrubs, Hedges, etc.* 02150 Removal or Abandonment of Existing Utilities and Underground

Structures* 02210 General Excavation * 02220 Structure Excavation* 02240 Borrow Excavation* 02245 Selected Backfill* 02250 Trench Excavation, Backfill, and Compaction* 02400 Excavation Support* 02512 Dewatering* 02551 Water Mains* 02552 Water Valve and Appurtenance Installation* 02553 Water Service Installation* 02610 Subgrade Preparation* 02621 Aggregate Base and Subbase Course* 02641 Bituminous Concrete Pavement* 02710 Fences*

CHARLES COUNTY, MARYLAND

MATTAWOMAN WWTP UTILITY WATER TUNNEL PIPING

TABLE OF CONTENTS

(* - Refer to County Standard Specifications)

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DIVISION 3 STRUCTURAL (NOT USED)

DIVISION 4 MASONRY (NOT USED)

DIVISION 5 METALS (NOT USED)

DIVISION 6 WOOD AND PLASTICS (NOT USED)

DIVISION 7 THERMAL AND MOISTURE PROTECTION (NOT USED)

DIVISION 8 DOORS AND WINDOWS (NOT USED)

DIVISION 9 FINISHES

Section 09960 High Performance Coatings

DIVISION 10 SPECIALTIES (NOT USED)

DIVISION 11 EQUIPMENT (NOT USED)

DIVISION 12 SPECIAL FURNISHINGS (NOT USED)

DIVISION 13 SPECIAL CONSTRUCTION (NOT USED)

DIVISION 14 CONVEYING SYSTEMS (NOT USED)

DIVISION 15 MECHANICAL

Section 15000 General Mechanical Requirements 15060 Pipes, Valves, and Fittings

DIVISION 16 ELECTRICAL (NOT USED)

APPENDICES

A. Lead Testing Report

Mattawoman WWTP Utility Water Tunnel Piping Charles County, MD

Construction, Coordination, and Sequencing

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SECTION 01106

CONSTRUCTION, COORDINATION, AND SEQUENCING

PARAGRAPH INDEX

Page No.

PART 1 - GENERAL

1.01 Summary 01106-1

1.02 General Restraints 01106-1

1.03 Shutdowns 01106-2

1.04 Coordination 01106-3

1.05 Suggested Sequence 01106-4

1.06 Submittals 01106-5

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

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SECTION 01106

CONSTRUCTION, COORDINATION AND SEQUENCING

1.01 SUMMARY

A. The intent of this Specification is to have the Contractor schedule and perform the Work in a manner such that the Owner can keep the existing treatment plant facilities in continuous dependable operation and in compliance with all regulatory requirements. The Contractor shall adhere to the constraints listed in this Section and elsewhere in the Contract Documents.

B. The Contractor shall:

1. Perform all construction necessary to complete connections, tie-ins, and shutdowns to existing facilities.

2. Coordinate shutdowns and tie-ins required for the Work with other Contracts performing Work at the site.

3. Keep existing facilities in operation unless otherwise specifically permitted in these Specifications or approved by the Owner.

4. Perform all construction activities so as to avoid interference with operations of the facility and the work of others.

1.02 GENERAL CONSTRAINTS

A. Any temporary work, facilities, roads, walks, protection of existing structures, piping, valves, equipment, line-stopping, temporary equipment, temporary lighting, temporary barriers, etc. that may be required within the Contractor's work limits to maintain continuous and dependable plant operation shall be furnished by the Contractor at no extra cost to the Owner.

B. The Contractor shall schedule the Work in such a manner so that the plant is maintained in continuous operation. All shutdowns shall be coordinated with the Construction Manager and approved by the Owner. If, in the opinion of the Owner, a shutdown is not required for the Contractor to perform the Work, the Contractor shall use alternate methods to accomplish the Work. All shutdowns shall be coordinated with and scheduled at times suitable to the Owner. Unless noted otherwise, the Contractor shall provide a minimum of 30 days’ notice of any shutdown.

C. Shutdowns shall not begin until all required materials are on-hand and ready for installation and the written shutdown plan has been approved by the Owner. At a

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01106 - 2 time approved by the Owner, the shutdown period shall commence, and the Contractor shall proceed with the Work continuously, start to finish, until the Work is completed, and the system is tested and ready for operation. If the Contractor completes all required Work before the specified shutdown period has ended, the Owner may immediately place the system back in service.

D. The Owner shall have the authority to order the Work to be performed during a scheduled shutdown stopped or prohibit Work which would, in his opinion, unreasonably result in stopping the necessary functions of the plant operations. The Owner reserves the right to cancel scheduled shutdowns if conditions warrant.

E. Safety procedures, equipment and provisions shall be provided by the Contractor as required to complete the Work. Work will be required in active areas of the wastewater treatment plant. High hydrogen sulfide levels (100 ppm or greater) can be present in certain areas of the plant. Contractor shall provide temporary means for access to and working in these areas.

F. Operation of existing equipment shall be done by the Owner. Operation of valves and gates required for the Work shall be performed by the Owner. Operation of valves and gates shall be coordinated through the Construction Manager. Owner does not guarantee that valves, stop logs, gates, etc., are or will be water or gas tight. Contractor shall provide temporary bulkheads, caps, plugs, dewatering, pumping and other measures required to perform the Work.

G. Contractor shall provide temporary lighting if shutdowns occur at night.

H. Owner will require continuous access to all plant operational areas. Gates, roads and pathways required for vehicle and personnel access shall be maintained such that they are serviceable. If construction activities require interruption of normal access to any area, Contractor shall provide temporary means for Owner access. Contractor shall coordinate access interruptions with the plant and provide at least 30 days’ notice of such interruptions. If vehicle support will be required in an area that is blocked by construction activity, Contractor shall provide such access to Owner upon request.

1.03 SHUTDOWNS

A. Existing shutdown periods for extended periods of time are not permitted. The

Contractor is responsible for all County overtime costs of County personnel resulting from the station shutdown, vacuum truck rental, and required County coordination.

Overtime compensation is as specified in Section 01101, MEASUREMENT AND PAYMENT. A minimum of one County employee to be on site at all times during the station shutdown.

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B. Complete facility shutdown without supplemental services to maintain facility operation are not permitted. Individual facilities may be taken out of service for replacement but must be complete and put back into service before another back-up facility or other piece of equipment is removed from service. Temporary shutdown periods (periods without supplemental services to maintain facility operation) shall not extend more than 4 hours.

C. Scheduled shut down, temporary shutdown and coordination of supplemental services to maintain facility operation shall be mutually agreed upon by the Owner and the Contractor, with the Engineer's approval.

D. In order to reduce each shutdown period to a minimum, the Contractor shall, prior to each shutdown request, expedite completion of the work to the fullest extent.

Complete all necessary preparatory work including testing and shall have adequate personnel available to keep each shutdown period to a minimum. All equipment and materials required to complete the work during a shutdown period shall be on the job site before the shutdown is commenced.

E. Carefully coordinate all work and schedules and shall provide the Owner and Engineer with 21 calendar days minimum written notice prior to each shutdown period, unless otherwise approved by the Owner.

F. Prior to each shutdown period, submit to the Engineer and Owner in writing, detailed descriptions and schedules of the proposed construction procedures during the shutdown period. Information submitted to the Engineer shall include a complete inventory of materials and equipment needed to perform the work. No shutdown of a facility or operation will be permitted until the Engineer has reviewed and approved, in writing, the proposed construction plans and procedures.

G. If, during any temporary shutdown periods, the work performed is not satisfactory, as planned, or not completed with the maximum time allocated, the Owner may order the Contractor to place the facility or operation back in service and reschedule the work, or he may order the work required to place the facility or operation back in service to be performed with other forces.

H. During scheduled shut downs the Contractor shall be responsible for all damages and costs thereof due to negligence and failure to maintain supplemental services.

1.04 COORDINATION

A. Contractor and Owner Personnel

1. The Contractor is responsible for the proper coordination of the work to prevent interference with the operation of the various facilities and to assure that the Owner is made aware in advance of proposed construction activities.

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2. There shall be no basis for claim for extra compensation or contract time extension due to delay caused by the Contractor's failure to give proper notice for requested shutdowns or to advise the Owner of proposed construction activities that in the judgement of the Owner will interfere with operation of the various facilities.

3. When an emergency condition arise at the various facilities, the Owner has the authority to require the Contractor and to suspend their operations temporarily until conditions return to normal, without claim for extra cost or contract time extension by the Contractor.

4. Where the work of any subcontractor will be installed in close proximity to work of other subcontractors, or where there is evidence that the work of any subcontractor will interfere with the work of other subcontractors, the Contractor shall work out space allocations to make a satisfactory adjustment. If so ordered by the Engineer, the Contractor shall prepare composite working drawings and sections at a suitable scale, clearly showing how work is to be installed in relation to the work of others. If the Contractor permits any work to be installed before coordinating with the various subcontractors; or so as to cause interference with work of other subcontractors, he shall make necessary changes in the work to correct the condition without extra cost to the Owner.

5. The Contractor shall arrange that each subcontractor determines the location, size and arrangement of all chases and openings and shall establish clearances in concealed spaces required for the proper installation of its work and shall see that such are provided.

1.05 SUGGESTED SEQUENCE

A. The Contractor is responsible for developing a sequence of construction for inclusion in the schedule. Contractor's sequence of construction shall fit schedule requirements and meet all the conditions of the specification defined herein as well as all other requirements of the Contract Documents. Contractor shall provide additional specific details related to planning and implementation as required in development of the schedule.

B. Any suggested sequence of construction or other suggested procedures may be used by the Contractor; however, the Contractor is solely responsible for the planning and successful execution of all aspects of construction.

C. The following represents a generalized suggested sequence of construction for the sedimentation basin upgrades:

1. Phase 1 – Isolate and replace all utility water piping and valves inside the service tunnels.

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2. Phase 2 – Isolate and install new hydrant and buried utility water piping connecting the service tunnels to the south water main.

3. Phase 3 – Isolate south water main and replace valves.

4. Phase 4 – Isolate north water main, replace valves, and replace/install hydrants.

5. Phase 5 - Isolate remaining areas near secondary clarifiers and EQ tanks, replace valves, and install new hydrants.

1.06 SUBMITTALS

A. Each Contractor shall coordinate with the Owner and Engineer by submitting a Maintenance of Plant Operations (MOPO) Plan. The MOPO plan shall be approved by the Owner and the Engineer with written authorization prior to implementation.

The MOPO plan shall include the following components:

1. Contain detailed information for each shutdown described herein and all others required to complete the Work.

2. Submittal shall include detailed description of shutdown, shutdown time-line, detailed breakdown of work to be completed prior to and during shutdown, materials required including for temporary bulkheads or plugs, and availability of proposed manpower, proposed method of protecting existing equipment, list of valves and equipment that will require operation by the Owner and any other details to adequately describe the proposed shutdown and sufficiently incorporate necessary coordination with other contractors.

B. MOPO plan submittal must be approved by the Owner before shutdown can begin.

Submit MOPO plan at least 30 days prior to start of proposed shutdown.

END OF SECTION

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Project Meetings

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SECTION 01200

PROJECT MEETINGS

1.01 Description 01200-1

1.02 Preconstruction Meeting 01200-1

1.03 Progress Meetings 01200-3

Project Meetings

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Project Meetings

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SECTION 01200

PROJECT MEETINGS

1.01 DESCRIPTION

A. The Engineer will schedule and administer a preconstruction meeting, periodic progress meetings, and specially called meetings throughout the progress of the work.

1. Prepare agenda for meetings

2. Make physical arrangements for meetings

3. Preside at meetings

B. Representatives of Contractor, subcontractors and suppliers attending meetings shall be qualified and authorized to act on behalf of the entity each represents.

C. The Contractor shall attend meetings to ascertain that work is expedited consistent with Contract Documents and construction schedules.

1.02 PRECONSTRUCTION MEETING

A. A preconstruction meeting will be scheduled before the Contractor starts work at the site.

B. Location: A site designated by the Engineer.

C. Attendance:

1. Owner's representative

2. Engineer and his professional consultants

3. Contractor's project manager and superintendent

4. Major subcontractors

5. Major suppliers

6. Utilities representative(s)

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7. Others as appropriate

D. Suggested Agenda:

1. Distribution and discussion of:

a. List of major subcontractors and suppliers

b. Projected construction schedules

2. Critical work sequencing.

3. Major equipment deliveries and priorities.

4. Detouring of traffic and street access.

5. Project coordination:

Designation and responsible personnel.

6. Procedures and processing of:

a. Field decisions

b. Proposal requests

c. Submittals

d. Change Orders

e. Applications for payment

7. Adequacy of distribution of Contract Documents.

8. Procedures for maintaining Record Documents.

9. Use of premises:

a. Office, work and storage areas.

b. Owners’ requirements.

10. Construction facilities, controls and construction aids.

11. Temporary utilities.

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12. Housekeeping procedures.

13. Check of required Bond and Insurance certifications.

14. Liquidated damages.

15. Check of required Permits.

16. Laboratory testing of material requirements.

17. Inventory of material stored on site.

18. Wage determination compliance and records, work hours.

19. MBE/WBE fair share objective, affirmative action, non-discrimination policies, if applicable.

20. Communication lines and contact persons, including address and telephone number.

21. Manufacturers' operation and maintenance manuals, and operation and maintenance training.

22. Regulatory agency inspections.

23. Progress agency inspections.

24. Jobsite safety.

25. Work Hours

1.03 PROGRESS MEETINGS

A. Regular periodic meetings will be held every 30 days or less. The first meeting will be scheduled 30 days after the preconstruction meeting or 30 days or less after the date of Notice to Proceed.

B. Meetings will be scheduled as required by progress of the work.

C. Location of the meetings: Contractor Field Office.

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D. Attendance:

1. Engineer and his professional consultants as needed.

2. Contractor

3. Owner's representative

4. Subcontractors as appropriate to the agenda.

5. Suppliers as appropriate to the agenda.

6. Others as appropriate.

E. Suggested Agenda:

1. Review and approval of minutes of previous meeting.

2. Review of work progress since previous meeting.

3. Field observations, problems, conflicts.

4. Problems which impede Construction Schedule.

5. Review of off-site fabrication, delivery schedules.

6. Corrective measures and procedures to regain projected schedule.

7. Revisions to Construction Schedule.

8. Progress schedule during succeeding work period.

9. Coordination of schedules.

10. Review submittal schedules; expedite as required.

11. Maintenance of quality standards.

12. Pending changes and substitutions.

13. Review proposed changes for:

a. Effect on Construction Schedule and on completion date.

b. Effect on other contracts of the Project.

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F. The Contractor shall attend progress meetings and shall study previous meeting minutes and current agenda items, in order to be prepared to discuss pertinent topics such as deliveries of materials and equipment, progress of the work, etc.

G. The Contractor shall provide a current shop drawing submittal log at each progress meeting in accordance with Section 01300.

H. The Contractor shall provide a current schedule at each progress meeting.

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Submittals

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SECTION 01300

SUBMITTALS

1.01 General 01300-1

1.02 Types of Submittals 01300-2

1.03 Procedures for Submittals 01300-2

1.04 Contractor’s Responsibility 01300-2

1.05 Engineer’s Review of Submittals 01300-2

1.06 Shop Drawings 01300-3

1.07 Samples 01300-3

1.08 Manufacturer’s List 01300-4

1.09 Operating and Maintenance Instructional

Periods 01300-4

1.10 Operation and Maintenance Manuals for

Equipment and Products 01300-4

1.11 Manufacturer’s Certificates 01300-6

1.12 Mix Designs 01300-6

1.13 Design Calculations 01300-6

1.14 Mill Test Reports 01300-6

1.15 Record Drawings (General) 01300-6

1.16 Record Shop Drawings 01300-6

1.17 Record Drawings 01300-6

1.18 Requests for Information 01300-7

1.19 Professional Engineer Certification 01300-7

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SECTION 01300

SUBMITTALS

1.01 GENERAL

A. Refer to County Standards GP-5 for additional details on Submittals.

B. The Contractor shall submit to the Engineer for review and approval such Shop Drawings, test reports and product data on materials and equipment (hereinafter in this article called data), and material samples (hereinafter in this article called samples) as are required for the proper control of work, including but not limited to those Shop Drawings product data and samples for materials and equipment specified elsewhere in the Specifications and in the Contract Drawings.

C. Within thirty (30) days after the effective date of the Agreement, the

Contractor shall submit to the Engineer a complete list of preliminary data on items for which Shop Drawings are to be submitted. Included in this list shall be the names of all proposed manufacturers furnishing specified items.

Review of this list by the Engineer shall in no way be expressed or implied to relieve the Contractor from submitting complete Shop Drawings and providing materials, equipment, etc., fully in accordance with the Specifications. The procedure is required in order to expedite final review of Shop Drawings.

D. The Contractor is to maintain an accurate updated submittal log and will bring this log to each scheduled progress meeting with the County, Developer and the Engineer. This log should include the following items:

1. Submittal-Description and Number assigned.

2. Date to Engineer.

3. Date returned to Contractor (from Engineer and or County).

4. Status of Submittal (Approved, Approved as Noted, Revise and

Return, Rejected).

5. Date of Resubmittal and Return (as applicable).

6. Date material release (for fabrication).

7. Projected date of fabrication.

8. Projected date of delivery to site.

9. Status of O&M manuals submittal.

10. Specification Section.

11. Drawings Sheet Number.

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1.02 TYPES OF SUBMITTALS

A. Shop Drawings for manufactured or fabricated items, schedules, diagrams and like material prepared specially for this project.

B. Product Data which include pre-printed material, manufacturer's descriptive literature, illustrations, catalog data, performance charts and the like intended to identify a part of the work but not necessarily prepared exclusively for this Contract.

C. Samples which include physical examples of products, materials, assemblies or workmanship which are identical to a portion of the work and which establish standards for materials, workmanship, or appearance of the finished work.

D. Administrative data to include information required to support the administrative requirements of the contract as called for in the specifications.

E. Requests for information & potential change orders.

1.03 PROCEDURE FOR SUBMITTALS

Refer to County Standards GP-5 for details.

1.04 CONTRACTOR'S RESPONSIBILITY

A. It is the duty of the Contractor to check all drawings, data and samples prepared by or for him before submitting them to the Engineer for review.

Each and every copy of the Drawings and data shall bear the Contractor's stamp showing that they have been checked. Shop Drawings submitted to the Engineer without the Contractor's stamp will be returned to the Contractor for conformance with this requirement. Shop Drawings shall indicate any deviations in the submittal from requirements of the Contract Documents.

B. Refer to County Standards GP-5 for additional details.

1.05 ENGINEER'S REVIEW OF SUBMITTALS

1.06 SHOP DRAWINGS

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Refer to County Standards GP-5 for shop drawing details.

1.07 SAMPLES

A. The Contractor shall furnish, for the approval of the Engineer, samples required by the Contract Documents or requested by the Engineer. Samples shall be delivered to the Engineer as specified or directed. The Contractor shall prepay all shipping charges on samples. Materials or equipment for which samples are required shall not be used in work until approved by the Engineer.

B. Samples shall be sufficient size and quantity to clearly illustrate:

1. Functional characteristics of the product, with integrally related parts and attachment devices.

2. Full range of color, texture and pattern.

3. A minimum of three samples of each item shall be submitted.

C. Each sample shall have a label indicating:

1. Name of project

2. Name of Contractor and Subcontractor

3. Material or Equipment Represented

4. Place of Origin

5. Name of Producer and Brand (if any)

4. Location of Project

5. County PGM Number

(Samples of finished materials shall have additional marking that will identify them under the finished schedules).

D. The Contractor shall prepare a transmittal letter in triplicate for each shipment of samples containing the information required in County Standards. Contractor shall enclose a copy of this letter with the shipment and send a copy of this letter to the Engineer. Approval of a sample shall be only for the characteristics or use named in such approval and shall not be construed to change or modify any Contract requirements.

1.08 MANUFACTURER'S LIST

Within thirty (30) days after receipt of a Notice to Proceed, and before ordering any equipment or materials, the Contractor shall submit to the Engineer for approval a complete list of proposed manufacturers and fabricators for all materials and

Submittals

01300 - 4 equipment to be used in this Contract. The purpose of this submittal is to allow the Engineer to predetermine the acceptability of proposed suppliers before issuance of purchase orders by the Contractor. Submission and acceptance of the manufacturers' list shall neither relieve the Contractor from submitting detailed Shop Drawings and product data for all materials and equipment nor shall it constitute prior acceptance of any specific item of equipment prior to submittal of Shop Drawings. After submission and acceptance of the manufacturers' list, the Contractor shall not deviate from the named suppliers and manufacturers without written approval from the Engineer. Substitutions for named manufacturers/vendors for materials and equipment must be approved by the Owner. This approval does not constitute approval or acceptance of the equipment that the Contractor submits.

1.09 OPERATING AND MAINTENANCE INSTRUCTIONAL PERIODS

Contractor shall furnish qualified personnel to instruct the County personnel in the proper operation and maintenance of equipment and systems provided in this Contract. Such instructional periods shall be for the duration of time specified in specification sections.

1.10 OPERATION AND MAINTENANCE MANUALS FOR EQUIPMENT AND

PRODUCTS

A. General:

The Contractor shall furnish Operation and Maintenance Manuals for all products and equipment provided under this Contract that shall conform to County Standards GP-5.

1.11 MANUFACTURER'S CERTIFICATES

1. As specified in the various sections of these Specifications, the

Contractor shall furnish the Engineer with manufacturer's certificates stating that the equipment and products have been installed under either the continuous or periodic supervision of the manufacturer's field representative, that they have been adjusted and initially operated in the presence of the manufacturer's field representative, and that they are operating in accordance with the specified requirements, to the manufacturer's satisfaction. A copy of all manufacturers certificates shall be bound in each Operation and Maintenance Manual.

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2. A certificate submitted for equipment, a product, or component of a product, shall indicate test results proving that the equipment, product, or component of a product, meet the requirements of the Contract Documents. An affidavit consisting of a sworn statement by an official of the company manufacturing the equipment or product indicating that the information on the certificate is true and accurate shall accompany the certificate.

3. A statement originating from the Contractor, or any of his subcontractors, suppliers, or any other agent which merely indicates that a particular item of equipment, product, or component of a product, meets the requirements of the Contract Documents shall not be considered a certificate. Any such submittal made in this manner will not be approved and the corresponding equipment, product, or component of a product, shall not be finally accepted.

B. Manufacturer's Representative:

1. The definition of "manufacturer's representative" shall be as follows:

a representative from the manufacturer's plant, familiar with the actual problems of manufacturing, installing and operating the particular equipment or product and with enough years of experience in this field to determine the successful operation of the equipment or product. Sales representatives or agents of the manufacturers shall not be acceptable.

2. As related to his obtaining the manufacturer's certificates, the Contractor shall include in this contract price the cost of furnishing competent and experienced manufacturer's representatives who shall represent the manufacturer on equipment and products furnished and installed under this Contract, to assist the Contractor to install, adjust, start up, and test the equipment and products in conformity with the Contract Documents. After the equipment and products have been operated through the trial period for each phase of construction and before being put into permanent service and demonstrating the equipment to the County, such manufacturer's representatives shall make all adjustments and tests required to provide that such equipment and products are in proper and satisfactory operational condition. This shall be performed prior to and separate from operational demonstration and instruction.

C. Engineer's Responsibility

The Engineer will review with reasonable promptness, within 30 days, all submittals with respect to the Contract Documents and will indicate a

Submittals

01300 - 6 qualified approval, an approval as noted or a revise and return notation. The Engineer will return all submittals found incomplete without a review.

1.12 MIX DESIGNS

Mix designs shall be submitted for concrete, grout, and bituminous paving. Mix design shall indicate all materials used in the product and their respective relative quantities. In any one mix design all quantities shall be expressed either by weight or volume insofar as it is practical to do so. The Contractor's attention is directed to DIVISION 3 of these Specifications for proportioning and testing requirements of concrete.

1.13 DESIGN CALCULATIONS

Design calculations shall be presented in a neat, legible manner and shall bear the stamp and signature of a registered professional engineer, registered in the State that the Work in this Contract is being performed.

1.14 MILL TEST REPORTS

Mill test reports shall be submitted for structural steel and concrete reinforcement steel. Reports shall be on the mill's standard report form.

1.15 RECORD DRAWINGS (GENERAL)

1.16 RECORD SHOP DRAWINGS

1.17 RECORD DRAWINGS

1.18 REQUESTS FOR INFORMATION

The Contractor shall submit to the Engineer all RFI’s sufficiently in advance of construction requirements to provide no less than thirty (30) calendar days for reviewing and appropriate action from the time the Engineer receives them. The contractor shall provide sketches, drawing references and any other information necessary for the Engineer to provide a timely response.

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1.19 PROFESSIONAL ENGINEER CERTIFICATION

A. Submittals that require a stamp and signature of a Maryland registered professional engineer shall be accompanied with the following Maryland Professional Certification.

“I hereby certify that these documents were prepared or approved by me, and that I am a duly licensed professional engineer under the laws of the State of Maryland, License No.

Expiration Date:

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CPM Schedules and Reports

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SECTION 01315

CPM SCHEDULES AND REPORTS

1.01 General Requirements 01315-1

1.02 Post Award Activities 01315-4

1.03 Construction Schedule 01315-4

1.04 Schedule of Values 01315-5

1.05 Construction Schedule Content 01315-5

1.06 Updating of Construction Schedule/

Progress Reports 01315-6

1.07 Recovery Schedule 01315-8

1.08 Schedule Revisions 01315-10

1.09 Float Time 01315-10

1.10 CPM Personnel 01315-10

PART 2 – PRODUCTS (Not Used)

PART 3 – EXECUTION (Not Used)

CPM Schedules and Reports

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CPM Schedules and Reports

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SECTION 01315

CPM SCHEDULES AND REPORTS

1.01 GENERAL REQUIREMENTS

A. The Work under this Contract shall be planned, scheduled, executed, reported and accomplished using the Critical Path Method (hereinafter referred to as CPM), in calendar days, unless otherwise specifically provided in the Contract Documents.

B. The primary objectives of the CPM scheduling requirements are: (1) to insure adequate planning and execution of the Work by Contractor; (2) to assist Owner in evaluating progress of the Work; (3) to provide for optimum coordination by the Contractor of his trades, Subcontracts and Suppliers, and of his work with the work or services provided by separate contractors; (4) to permit the timely prediction or detection of events or occurrences which may affect the timely prosecution of the Work; and (5) to provide a mechanism or tool for use by the Owner and Contractor in determining and monitoring any actions of the Contractor which may be required in order to comply with requirements of the Contract Documents relating to the completion of the various portions of the Work by the Milestone Dates specified in the Contract Documents.

C. Contractor is responsible for determining the sequence of activities, the time estimates of the detailed construction activities and the means, methods, techniques and procedures to be employed. The Construction Schedule shall represent the Contractor's best judgement of how he will prosecute the Work in compliance with the Contract requirements. Contractor shall ensure that the Construction Schedule is current and accurate and is properly and timely monitored, updated and revised as Project conditions and the Contract Documents may require.

D. Contractor shall consult with his principal Subcontractors and Suppliers relating to the preparation of his construction plan and Construction Schedule. Principal Subcontractors shall receive copies of those portions of Contractor's Construction Schedule which relates to their work and shall be continually advised of any updates or revisions to the Construction Schedule as the Work progresses. When Contractor submits his Construction Schedule or makes any proposed updates or revisions to such Schedule, it will be assumed by Owner that the Contractor has consulted with and has concurrence of his principal Subcontractors and Suppliers. Contractor shall be solely responsible for ensuring that all Subcontractors and Suppliers comply with the requirements of the Construction Schedule for their portions of the Work.

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E. Contractor will provide the basic data relating to activities, durations and sequences as part of the Construction Schedule. This data shall reflect the Contractor's actual construction plan for the Project, and shall fully comply with all requirements of the Contract Documents.

F. When there are separate contractors working concurrently on the Project whose work must interface or be coordinated with the Work of Contractor, Contractor shall coordinate his activities of the separate contractors and shall, prior to the submission of his Construction Schedule, obtain written approval of his Construction Schedule by the separate contractors. If Contractor is unable to obtain such written approval by the separate contractors after his best efforts to do so, or if a conflict occurs that cannot be resolved by mutual agreement between Contractor and any separate contractor, the Owner shall make a determination of the schedule which will be binding upon Contractor and the separate contractors.

G. It is understood and agreed that the Construction Schedule is to represent

Contractor's best plan and estimate for the work; however, Contractor acknowledges that the Construction Schedule may have to be revised from time-to-time as progress proceeds. Contractor further acknowledges and agrees that the Owner does not guarantee that: (1) Contractor can start work activities on the "early start" or "late start" dates or complete work activities on the "early finish" or "late finish" dates shown in the schedule, or as same may be updated or revised; (2) Contractor can proceed at all times in the sequence established by the utilization of only the resources and manpower he initially plans for the performance of the Work; (3) Contractor's Construction Schedule will not have to be modified in order to obtain the agreement of any separate contractors to the schedule; or (4) Contractor's Construction Schedule will not have to be modified or changed by direction of the Construction Manager. Any changes, modifications or adjustments made by the Contractor to the Construction Schedule shall be in full compliance with all requirements of the Contract Documents.

H. The Contractor acknowledges and agrees that his Construction Schedule must be flexible in order to accommodate and allow for his coordination with the operations of the Owner and the work of separate contractors relating to the Project. The Owner will review the Contractor's Construction Schedule for compatibility with Owner operations and the work of separate contractors. Contractor agrees to hold meetings with the Owner and separate contractors to resolve any conflicts between Contractor's Construction Schedule and the operations of the Owner or work of separate contractors.

Contractor agrees to fully cooperate with Owner and separate contractors to resolve such conflicts and to revise his Construction Schedule as reasonably required.

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I. In order to maintain the orderly progress of the work performed on the Project, the Owner shall have the right to determine, in his sole discretion, the priority between the Work performed by Contractor and the work of any separate contractors or Owner's operations; this decision shall be final and binding upon Contractor and shall not be a cause for extra compensation or an extension of time, except where an extension of time is granted because of a delay for which Contractor is otherwise entitled to an extension under the

J. If Contractor's Construction Schedule indicates that Owner or a separate contractor is to complete an activity or perform certain preceding work by a particular date, or within a certain duration, Owner, or any separate contractor shall not be bound to said date or duration unless Owner expressly and specifically agrees in writing to same. The review and approval or acceptance by Owner of the Construction Schedule or any other schedule or plan of construction of Contractor, does not constitute an agreement by Owner of any start or finish date in the schedule or specific durations or sequences for activities of the Owner or any separate contractor; provided, however, that nothing herein shall be construed as modifying or changing, or excusing the performance of Contractor of required portions of the Work by the Milestone Dates as set forth in the Contract Documents.

K. The Milestone Dates set forth in the Contract Documents represent only the major items of Work and may include interface dates with the operations of the Owner, the work of separate contractors or others. Milestone Dates are Contract requirements and are of the essence to this Contract and to the coordination of the Work by Contractor. Milestone Dates represent the latest allowable start or completion time for those portions of the Work to which each Milestone Dates relates. The Milestone Dates are not intended to be a complete listing of all Work under this Contract or of all interfaces with work performed by other separate contractors, the Owner or others. Contractor shall determine the time requirements for all such interfaces and shall be responsible for planning, scheduling and coordinating the work in order to complete in accordance with those requirements.

L. Approval or acceptance by the Owner of the Contractor's Construction

Schedule, or any revisions or updates thereto, is advisory only and shall not relieve the Contractor of the responsibility for accomplishing each portion of the Work within each and every applicable Specific Date. Omissions and errors in the approved or accepted Construction Schedule, or any revisions or updates shall not excuse performance which is not in compliance with the Contract.

M. Should Contractor intend or plan to complete the Work, or any portion thereof, earlier than any applicable Specific Date or Contract Time, Contractor shall give timely and reasonable notice of this fact to the Owner.

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N. Unless otherwise specifically provided in the Contract Documents, Contractor acknowledges that Owner has contemplated in planning and initial scheduling of the projects, that the work will be performed on a 5-day work week basis, utilizing a single 8-hour shift per day.

O. The schedule shall be developed in a format compatible with Microsoft

Project.

1.02 POST AWARD ACTIVITIES

A. Orientation Session: Contractor shall, upon notification from the Owner, attend an orientation session relating to the Schedules and Reports requirements for this Project. This orientation meeting is designed to assist the Contractor in planning his work and in developing his Construction Schedule. This session will normally be held within fifteen (15) days after the date of the Notice to Proceed. Contractor shall arrange for his project manager and Superintendent, major Subcontractors and Suppliers, and any scheduling consultant that he may employ, to attend the orientation session.

B. The Owner will review: the objectives of the Schedules and Reports requirements; the procedure and requirements for the preparation of the Construction Schedule and Schedule of Values by Contractor; and, how the requirements of the Contract Documents will be monitored and enforced.

Long-lead items and time requirements for work by Subcontractors will be identified.

1.03 CONSTRUCTION SCHEDULE

A. Within seven (7) days of the orientation session, (even though Contractor may not have completed Subcontractor negotiations and executed subcontractors) the Contractor shall complete a time-scaled network graphic.

The Construction Schedule shall represent the Contractor's best judgement and intended plan for completion of the Work in compliance with Milestone Dates in the Contract Documents and the Contract Time. The Construction Schedule shall take into account all foreseeable activities to be accomplished by any separate contractors, and interface dates with utility owners, the Owner's operations and others. The Construction Schedule shall anticipate all necessary manpower and resources to accomplish the activities within the durations set forth in the Construction Schedule.

B. Owner shall have the right to require the Contractor to modify any Contractor data or any portion of the Contractor's Construction Schedule, Schedule of Values or Recovery Schedule, as herein required, with Contractor bearing the expense thereof, which the Engineer reasonably determines to be: (1) impracticable; (2) based upon erroneous calculations or estimates; (3) unreasonable; (4) required in order to ensure coordination by Contractor of the work of his Subcontractors and with the work or services being provided

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1.04 SCHEDULE OF VALUES

A. Within ten (10) days after completion of the Construction Schedule, the

Contractor shall submit to the Owner a Schedule of Values for review, allocating a dollar value for the activities on the Construction Schedule. The dollar value for the activity shall be the cost of the work of the activity including labor, materials, and pro rata contribution of General Conditions requirements, overhead and profit. The sum of all activity costs shall equal the total Contract Sum. The Contractor shall revise the Schedule of Values as necessary to gain the approval of the Owner.

B. The activity cost for the Schedule of Values shall be coded with a cost code corresponding to the trade, Subcontractor or Supplier performing the work so that subtotals for each division of the Work can be prepared.

C. The Schedule of Values shall, in the best judgement of the Contractor, represent a fair, reasonable and equitable dollar (cost) allocation for each activity on the Construction Schedule.

1.05 CONSTRUCTION SCHEDULE CONTENT

A. The Construction Schedule shall consist of a time-scaled, detailed network graphic representation of all activities which are part of the Contractor's construction plan and an accompanying computerized mathematical analysis of these activities. The graphic network shall include, but not be limited to, the following information:

1. Project PGM No. and Name;

2. Activities of completed work ready for use by next trade, Owner, etc;

3. Activities relating to different areas of responsibility, such as subcontracted work which is distinctly separate from that being done by the Contractor directly;

4. Different categories of work as distinguished by craft or crew requirements;

5. Different categories of work as distinguished by equipment requirements;

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6. Different categories of work as distinguished by materials;

7. Distinct and identifiable subdivisions of work such as structural slabs, beams, columns;

8. Location of work within the Project that necessitates different times or crews to perform;

9. Outage schedules for existing utility services that will be interrupted during the performance of the Work;

10. Acquisition and installation of equipment and materials, supplies and/or installed by Owner or separate contractors;

11. Material to be stored on site; and

12. Milestone Dates.

B. For all major equipment and materials to be fabricated or supplied for the Project, the Construction Schedule shall show a sequence of activities including:

1. Preparation of Shop Drawings and sample submissions;

2. A reasonable time for review of Shop Drawings and samples or such times as specified in the Contract Documents;

3. Shop fabrication, delivery, and storage;

4. Erection or installation; and

5. Testing of equipment and materials.

C. The Construction Schedule shall include late completion dates for the Work that are not later than the required Milestone Dates. The time-scaled graphic network shall be drawn based upon the early start dates of activities shown on the graphic.

D. All activity durations shall be given in calendar days.

1.06 UPDATING OF CONSTRUCTION SCHEDULE / PROGRESS REPORTS

A. On a daily basis, the Contractor shall submit daily field reports to the Owner.

The daily field reports shall be used to maintain to project progress. Daily field reports shall include a minimum of three (3) digital photographs documenting work completed. Daily field reports shall be submitted to the Owner no later than two (2) business days after the completed workday.

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B. On a monthly basis, the Contractor shall arrange for his project manager and Superintendent to meet at the Project Site with the Owner to review Contractor's report of actual progress prepared by Contractor. Said report shall set forth up-to-date and accurate progress data, shall be based upon Contractor's best judgment and shall be prepared by Contractor in consultation with all principal Subcontractors and Suppliers.

C. The Contractor shall update the CPM schedule and submit to the Owner and

Engineer for review on a monthly basis. The CPM schedule update shall show the activities, or portions of activities, completed during the reporting period, the actual start and finish dates for these activities, remaining durations and/or estimated completion dates for activities currently in progress. The monthly update shall be submitted electronically and include files that are compatible with Microsoft Project.

D. Contractor shall provide the Owner with a three (3) week lookahead of the project. The three (3) week lookahead shall be updated every Friday throughout the duration of the construction period.

E. Contractor shall submit a narrative report with the updated progress analysis which shall include, but not be limited to, a description of problem areas, current and anticipated delaying factors and their impact, explanations of corrective actions taken or planned, any newly planned activities or changes in sequence, and proposed logic for a Recovery Schedule, if required, as further described herein. The report shall also include:

1. A narrative describing actual work accomplished during the reporting period;

2. A list of major construction equipment used on the Work during the reporting period and any construction equipment idle during the reporting period;

3. The total number of men by craft actually engaged in the Work during the reporting period, with such total stated separately as to office, supervisory, and field personnel;

4. A manpower and equipment forecast for the succeeding thirty (30) days,…