520757_2025 Transmission Mains Rehab Combined Specs.pdf

TABLE OF CONTENTS

TOC – 1 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

CITY OF AURORA / AURORA WATER

2025 TRANSMISSION MAINS REHABILITATION PROGRAM

Aurora Project No. 520757

BIDDING DOCUMENTS AND SPECIFICATIONS

DIVISION 00 – PROCUREMENT AND CONTRACTING REQUIREMENTS

REFER TO BIDDING DOCUMENTS FOR TABLE OF CONTENTS FOR DIVISION 00

CONTENTS

DIVISION 01 – GENERAL REQUIREMENTS

01 00 00 – Governing Priorities 01 11 00 – Summary of Work 01 14 00 – Construction Constraints 01 14 16 – Public and Media Relations 01 15 90 – Property Requirements 01 24 13 – Value Engineering 01 26 00 – Contract Modification Procedures 01 29 76 – Measurement and Payment General 01 31 19 – Project Meetings 01 32 16 – Construction Progress Schedule 01 33 00 – Contractor Submittals 01 33 50 – Site Conditions Surveys 01 33 51 – Project Record Documents 01 35 29 – Health and Safety 01 35 53 – Site Security 01 41 26 – Permits and Agreements 01 42 13 – Abbreviations and Acronyms 01 42 19 – Reference Standards 01 45 00 – Quality Assurance/Quality Control 01 45 10 – Testing and Testing Laboratory Services 01 50 10 – Protection of Existing Facilities 01 55 00 – Site Access and Storage 01 55 26 – Traffic Control 01 57 19 – Temporary Environmental Controls 01 58 13 – Project Signs 01 60 00 – Products Materials and Equipment 01 77 00 – Project Closeout

DIVISION 02 – EXISTING CONDITIONS

02 41 00 – Demolition and Salvage

DIVISION 03 – CONCRETE

03 05 16 – Precast Concrete Utility Structures 03 30 00 – Cast-in-Place Concrete

DIVISION 31 – EARTHWORK

TABLE OF CONTENTS

TOC – 2 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

31 23 00 – Earthwork for Structures 31 23 19 – Dewatering & Drainage 31 23 33 - Trenching and Backfilling 31 41 00 – Shoring Sheeting Bracing

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 12 16 – Asphaltic Concrete Pavement

DIVISION 33 – UTILITIES

33 02 01 – Pipe and Pipe Fittings: General Statement 33 02 02 – Water Distribution Pipeline Disinfection 33 03 02 – Ductile Iron Pipe 33 04 01 – Opening and Penetrations 33 05 24 – Steel Utility Pipe 33 90 02 – Valves and Operators 33 90 03 – Line Stops

ATTACHMENTS

01 – Terracon’s Geotechnical Data Report

DRAWINGS

THIS DOCUMENT CONTAINS ALL ITEMS AND PAGES LISTED UNDER TABLE OF

CONTENTS ABOVE, AND IT IS THE BIDDER’S AND CONTRACTOR’S RESPONSIBILITY

TO VERIFY THAT ALL PAGES ARE INCLUDED IN THE DOCUMENT PRIOR TO

SUBMITTING BID AND CONSTRUCTION.

For technical assistance contact the Aurora Water Project Manager, Shiva Sapkota, at ssapkota@auroragov.org

-END OF SECTION-

mailto:ssapkota@auroragov.org

VERSION I MARCH 2013

GOVERNING PRIORITIES 2025 TRANSMISSION MAINS RELHABILITATION PROGRAM

01 00 00 - 1 JULY 2025

SECTION 01 00 00 - GOVERNING PRIORITIES

1.1 DIVISION 0 GOVERNS OVER DIVISION 1

A. All of the information in Division 1 is supplemental to Division 0.

B. For all of the work of Division 1 reference is made to Division 0, whether stated explicitly or not. Additional requirements are also provided to supplement that mentioned in Division 0. In case of a conflict between Division 1 and Division 0, Division 0 shall govern, unless otherwise specifically noted.

1.2 ADDITIONAL INFORMATION

A. Payment for all of the work of Division 1 and Division 0 shall be considered incidental and payment will be understood to be included as part of the lump sum or unit bid prices in the Bid Form, unless otherwise specifically noted.

B. For all of the work of Division 2 through 49 (Technical Specifications), the requirements of Division 0 and especially Division 1 are incorporated as if re-written in each individual Specification Section.

C. Unless explicitly stated otherwise, in case of a conflict between the requirements of Division 2 through 49 and the requirements of Division 1 or Division 0, the more stringent requirements, in the opinion of the Owner, shall apply.

D. Unless explicitly stated otherwise, in case of a conflict between the requirements of any Sections in any of the Division 1 through 49, the more stringent requirements, in the opinion of the Owner, shall apply.

E. Unless explicitly stated otherwise, in case of a conflict between the Drawings and the Specifications, the more stringent requirements, in the opinion of the Owner, shall apply.

F. Unless explicitly stated otherwise, in case of a conflict between the Specifications or Drawings and the City of Aurora SCADA Design and Engineering Guidelines (DEGs), the DEGs shall apply.

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION (NOT USED)

- END OF SECTION -

VERSION II AUGUST 2013

SUMMARY OF WORK 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 11 00 - 1 JULY 2025

SECTION 01 11 00 - SUMMARY OF WORK

PART I – GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

A. The WORK of this project consists of two general areas:

a. Airport Blvd project site:

• Item 1: Mobilization/ Demobilization/Bonds/ Schedule/ Permits

• Item 2: 24-inch Insertion Valve excavation, installation, valve vault, 24-inch DI pipe installation and restoration and appurtenances

• Item 3: 24-inch line stop installation, excavation, concrete support and restoration

• Item 4: Traffic Control set up and permit

A detailed summary of above items: Demolition and replacement of twenty (20) FT of 24 IN ductile iron pipe; installation of two (2) 24 IN line stops including cast-in-place concrete support, removal of two (2) 24 IN line stops after the inspection is completed, installation of one (1) 24 IN insertion valve including cast-in-place concrete thrust block, one (1) air release valve, and one (1) cast-in-place concrete valve vault;

coordination with Xylem Water Solutions for pipe condition assessment;

traffic control set up and obtain permits; dewatering; disinfection and restoration of water service; pavement patching; and site restoration.

b. E Alameda Ave project site:

• Item 1: Mobilization/ Demobilization/Bonds/ Schedule/ Permits

• Item 2: 16-inch gate valve excavation, installation, valve vault, 16-inch Steel pipe installation and restoration and appurtenances

• Item 3: 16-inch line stop installation, excavation, concrete support and restoration

• Item 4: Traffic Control set up and permit

A detailed summary of above items: Demolition of ten (10) FT of 16 IN steel water main; installation of two (2) 16 IN line stops including cast-in-place concrete support, removal of two (2) 16 IN line stops after the construction is completed, installation of one (1) 16 IN gate valve including one (1) pre-cast valve vault. Installation of the connecting

SUMMARY OF WORK 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 11 00 - 2 JULY 2025

pipes (< 10 FT) between the proposed gate valve and the existing steel water main. Coordination with Xylem Water Solutions for pipe condition assessment; traffic control; dewatering; disinfection and restoration of water service; pavement patching; and site restoration.

1.2 EXPRESSION OF CONTRACTOR RESPONSIBILITY IN THE TECHNICAL

SPECIFICATIONS

A. Whenever in the Technical Specifications requirements are expressed with active verbs and no subjects, the words, "The Contractor shall," have been omitted as a matter of style, meaning that the Contractor is the party responsible for taking the action required.

1.3 EMPLOYMENT OF LABOR

A. None but skilled workers shall be employed on the Work requiring special qualifications. When requested in writing by Owner, the Contractor or any Subcontractor shall discharge any person who is, in the opinion Owner, incompetent, unfaithful, disorderly or otherwise unsatisfactory, and shall not again employee such discharge person on the Work except with the written consent of Owner. Such discharge shall not be the basis of any Claim for compensation or damages against Owner, the Engineer or their respective directors, officers, employees, agents, consultants or designated volunteers.

1.4 WORK BY OTHERS

A. Interference With Work On Utilities: Contractor shall cooperate fully with all utility forces of the Owner or forces of other public or private agencies engaged in the relocation, altering, or otherwise rearranging of any facilities which interfere with the progress of Work, and shall schedule Work so as to minimize interference with said relocation, altering, or other rearranging of facilities. Contractor’s attention is directed to Section 01 50 10 – Protection of Existing Facilities for known requirements regarding utility coordination.

1.5 WORK SEQUENCE

A. Contractor shall schedule and perform Work in such manner to achieve all milestone completion dates. Contractor shall also schedule and perform Work to conform to other dates, times, and time durations required as part of this Work and the work of others. Refer to Section 01 14 00 - Construction Constraints for more requirements regarding sequencing and schedule constraints.

1.6 CONTRACTOR USE OF SITE

A. Contractor shall confine its operations to the Work areas indicated on the drawings.

B. Contractor's use of Site shall be limited to its construction operations, including on- Site storage of materials, equipment, parking of Contractor employee vehicles, on- Site fabrication facilities, and field offices. Refer to Section 01 55 00 - Site Access and Storage.

SUMMARY OF WORK 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 11 00 - 3 JULY 2025

C. Restricted areas are not available to Contractor during performance of Work.

Contractor shall be prohibited from entering any restricted areas. Restricted areas include:

a. East Tollgate Creek

b. Buckley Space Force Base

Refer to Section 01 55 00 - Site Access and Storage.

D. Night and weekend work may be performed where not specifically prohibited by Owner or agencies having jurisdiction, provided that written notification has been provided to City of Aurora Project Manager a minimum of 48-hours prior to the start of night or weekend work. Written notification must also be provided to the agency having jurisdiction in the time frame required by the agency having jurisdiction. Refer to Section 01 41 26 – Permits and Agreements for restriction of working hours by agencies having jurisdiction.

E. No Work shall be allowed on holidays as defined in the Contract Documents.

1.7 OWNER USE OF PROJECT SITE

A. Owner may utilize all or part of the existing Site and existing facilities during the entire period of construction for the conduct of Owner's normal operations, observation of the Work, and for other Owner projects. Cooperate and coordinate with the City of Aurora Project Manager to facilitate Owner's operations and projects and to minimize interference with Contractor's operations at the same time. In any event, Owner shall be allowed safe access to all portions of the Site during the period of construction of the Project.

1.8 NOTICES TO OWNERS OF ADJACENT PROPERTIES AND UTILITIES

A. Maintain access to all public and private properties at all times through the use of detours or alternate routes or entrances unless written permission is obtained from the property owner or tenant prior to closing such access.

B. Utilities and other concerned agencies shall be contacted prior to cutting streets or other traffic areas or excavating near underground utilities or pole lines in accordance with Section 01 50 10 – Protection of Existing Facilities.

C. Review with the various utility companies the construction methods, safety procedures, and Work to be done in the vicinity of utilities. When temporary relocation of utilities is necessary, sufficient advance notice shall be given by Contractor to the utility involved, as required by the utility company.

1.9 LINES AND GRADES

A. Work shall be done to the lines, grades, and elevations indicated, within the tolerances below except where otherwise indicated and where dimensions are indicated to be minimum, or specified in other sections of the Contract Documents.

Maintain slopes and drainage as indicated. Regardless of tolerance limits, no reverse grading will be permitted. No enclosed depressions or high and low points shall be allowed unless specifically indicated.

SUMMARY OF WORK 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 11 00 - 4 JULY 2025

Non-grade critical areas (refer to Note 1 below).

6 inches

Grade critical areas and areas within the 100-year flood plain.

1 inch

Graded dirt roads or pads 2 inches

Foundations for structures 1 inch

Paved roads and parking lots 1 inch

Drainage ditches and swales 1 inch

Buried pipelines smaller than 48-inches in diameter

± 1-inch vertical, ± 2-inches horizontal, unless indicated otherwise

Buried pipelines 48-inches and larger in diameter

± 2.5 percent of diameter vertical, ± 5 percent of diameter horizontal, unless indicated otherwise

B. Note 1 - Non-grade Critical Areas: The Contractor may distribute excess native spoils material at properties where grade is non-critical, within the construction limits and in accordance with Specification Section 01 14 00 – Construction Constraints.

Grades shall conform to grade tolerances indicated. Non-grade critical tolerances shall not apply to areas within the 100-year floodplain. Areas within the 100 year floodplain shall be restored to original grade to within the tolerances specified, regardless of the classification made in Specification Section 01 14 00 – Construction Constraints.

C. Tolerances for finish grades are subject to adjustment as indicated at transition from new, to existing surfaces. Provide uniform grade and match elevations at such transitions.

D. Basic horizontal and vertical control points are established in the Survey Control Drawings. Any additional surveys, layouts, or measurements needed for proper construction of Work shall be performed by Contractor.

E. Keep City of Aurora Project Manager informed, a reasonable time in advance, of the times and places at which Contractor wishes to do Work, so that horizontal and vertical control points may be established and any checking deemed necessary by City of Aurora Project Manager may be done with minimum delay to Contractor.

F. Contractor shall remove and reconstruct Work that is improperly located.

SUMMARY OF WORK 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 11 00 - 5 JULY 2025

G. Unless otherwise indicated, existing grades and grades prepared by others are accurate only to within one-half of the contour interval for the topography indicated or plus or minus one-foot, whichever is greater. If no contour interval is indicated, existing grades shall be considered accurate to plus or minus one foot. No additional payment will be made for extra grading, excavation, fill, backfill, structural fill, or related materials and Work effort of any kind unless the actual grades at the beginning of the Work differ from those indicated by more than the accuracy limits indicated above.

CONSTRUCTION CONSTRAINTS 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 14 00 - 1 JULY 2025

SECTION 01 14 00 - CONSTRUCTION CONSTRAINTS

PART 1 – GENERAL

1.1 GENERAL

A. Schedule, sequence, and perform Work in a manner which minimizes disruption to the public and to the operation and maintenance of existing facilities.

1.2 SPECIFIC CONSTRAINTS

A. The listing of constraints below does not mean that every constraint or special condition has been identified. Constraints and special conditions listed below do not relieve the Contractor of the responsibility for coordination and planning for completion of the Work in accordance with the Contract.

1. Coordinate constraints associated with environmentally sensitive areas in accordance with Section 01 57 19 – Temporary Environmental Controls.

2. Coordinate constraints associated with various railroad permits, as indicated in Section 01 41 26 – Permits and Agreements.

3. Coordinate constraints associated with various agency permits and agreements, as indicated in Section 01 41 26 – Permits and Agreements.

4. Maintain safe access to Work and adjacent properties in accordance with Specification Section 01 35 29 – Health and Safety.

5. Regular working hours consist of 8 working hours within an 8-½-hour period between 7:30 a.m. and 4:00 p.m., excluding Saturdays, Sundays and City of Aurora holidays. Overtime work is work in excess of 8 hours per day or 40 hours per week or work not within the times specified for regular working hours.

6. Order of construction: Contractor is encouraged to schedule work in such a manner as to minimize impact to public.

7. Temporary road closures may be required. Refer to section 01 55 26 – Traffic Control for allowable road closures.

PUBLIC AND MEDIA RELATIONS 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 14 16 - 1 JULY 2025

SECTION 01 14 16 - PUBLIC AND MEDIA RELATIONS

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Contractor responsibilities to minimize inconvenience to the public, and to provide information to the Owner and the Owner’s Public Information Representative.

1.2 DEFINITIONS

A. ADA: Americans with Disabilities Act.

B. Affected Parties: Includes all residential and business properties including, but not limited to churches, day care centers, hotels, community centers and schools within 500 yards from either side or the end of all scheduled work locations.

C. Emergency: Here, the term “emergency” shall mean incidents in which injuries or accidents 1) occur within the construction zone and/or 2) involve construction equipment, and/or 3) disrupt or block the flow of traffic, and clearance is anticipated to take more than ten (10) minutes.

D. Emergency Responders: Includes, but not limited to, fire department, emergency medical, and police agencies having jurisdiction in the area of the work.

E. HS&E: Health, Safety and Environment.

F. Public Information Representative (weekdays): ELIZABETH LEFEBVRE Telephone: 720.859.4312 E-mail: elefebvr@auroragov.org Public Information Representative (evenings/weekends): Flow Control Center (FCC) Telephone: 303-326-8385

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

2.1 GENERAL

A. Maintain access at all times, including ADA, to all Affected Parties through the use of detours, alternate routes or entrances unless written permission is obtained from the property owner or tenant prior to closing such access.

B. Minimize the inconvenience to the public at all times, including but not limited to restricting night work, noise and dust (refer to Section 01 57 19 – Temporary Environmental Controls and Section 01 41 26 - Permits).

C. Assist the Owner and the Public Information Representative in keeping the public informed by providing accurate and timely information when so requested.

2.2 PUBLIC NOTIFICATION

A. Contractor shall be responsible for notifying Emergency Responders of all detours and access restrictions to streets or driveways.

PUBLIC AND MEDIA RELATIONS 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 14 16 - 2 JULY 2025

B. Contractor shall inform Affected Parties of utility disruptions or traffic control plans prior to the start of those operations, as directed by the Owner.

C. In some instances, the Owner may ask the Contractor to hand deliver public notifications.

2.3 EMERGENCY RESPONSE

A. In the event of any emergency, immediately notify the Owner and the Public Information Representative.

B. In the event that an emergency situation will last more than two hours, the Contractor may be required to provide bottled water to Affected Parties. Disruptions spanning a 24-hour period may require that the Contractor house Affected Parties in Owner approved hotels.

2.4 CITIZEN INTERACTION

A. When necessary, Contractor meetings with Affected Parties will be arranged by the Public Information Representative.

B. If approached by a citizen with questions or concern about the project, the Contractor shall give only basic facts of the project and direct the citizen to contact the Owner or Public Information Representative to learn more.

C. If approached by a citizen with questions or concern about the project, the Contractor shall remedy the complaint on the spot whenever possible. If the complaint cannot be resolved immediately, advise the customer to contact the Public Information Representative for assistance.

2.5 MEDIA INTERACTION

A. The Contractor and the Contractor’s agents are not authorized to speak to the media.

If media arrives at the work site, contact the Owner or the Public Information Representative. If asked for information by the media, say nothing and direct inquiries to the Owner or the Public Information Representative.

PROPERTY REQUIREMENTS 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 15 90 - 1 JULY 2025

SECTION 01 15 90 – PROPERTY REQUIREMENTS

PART 1 - GENERAL

1.1 GENERAL PROPERTY REQUIREMENTS

A. Special Requirements for Work Zone: Contractor to follow traffic control requirements per Section 01 55 26 - Traffic Control.

B. Contractors Movements: None

1.2 SPECIFIC PROPERTY REQUIREMENTS

A. Maintain all construction activities within City of Aurora right of way, property, or existing easements.

PART 2 – PRODUCTS NOT USED

PART 3 – EXECUTION NOT USED

VALUE ENGINEERING 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 24 13 - 1 JULY 2025

SECTION 01 24 13 – VALUE ENGINEERING

PART 1 - GENERAL

1.1 SUMMARY

A. This section applies to cost reduction proposals, hereinafter referred to as Value Engineering Cost Proposal (VECP), initiated and developed by Contractor to change requirements of the Contract for sole purpose of reducing total cost of construction. It is the intent that the VECP Construction Savings Amount, as defined herein, will be shared between Contractor and Owner.

B. VECP shall be identified as such at the time of submission to the City of Aurora Project Manager.

C. VECP, if adopted, shall result in a savings to the Owner by providing a decrease in cost for performing the Work without impairing any of the essential functions and characteristics such as service life, reliability, and economy of operation, ease of maintenance, desired appearance, and safety features.

D. VECP shall not be based solely upon a change in specified quantities.

1.2 SUBCONTRACT FLOW DOWN

A. Contractor shall include these VECP provisions in subcontracts of $25,000 or greater. VECP provisions may be included in subcontracts of lesser value.

Subcontracts shall state that benefits accruing to Contractor as a result of an accepted VECP initiated by a Subcontractor shall be shared by Contractor and Subcontractor, in a manner specified in the subcontract. Concurrent contract savings on other Owner contracts where Subcontractor is participating are not allowed.

1.3 DEFINITIONS

A. Collateral Savings: Measurable net reductions in Owner’s costs of operation that result from VECP including maintenance, logistics and Owner-furnished equipment.

B. Concurrent Savings: Savings from other Owner contracts where Contractor is participating.

C. Contractor Costs: Reasonable costs incurred by Contractor in preparing VECP and making the change, such as cancellation or restocking charges.

D. Future Contract Savings: Reductions in cost of performance of future contracts for essentially the same item resulting from VECP submitted by Contractor.

E. Gross Savings Amount: The gross savings amount to Contract, before deductions of Owner and Contractor Costs.

F. Owner Costs: Reasonable costs, including associated engineering costs, incurred by Owner for evaluating and implementing a VECP, such as redesign, testing, and effect on other contracts, including right of way acquisition costs.

VALUE ENGINEERING 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 24 13 - 2 JULY 2025

G. VECP Construction Savings Amount: Net amount of Contract Price reduction to be realized by implementation of VECP; the Gross Savings Amount less Owner and Contractor Costs.

1.4 AREAS NOT TO BE CONSIDERED

A. The following areas will not be considered for VECP submissions:

1. Owner- or specification-required proprietary products, equipment, or systems.

1.5 PRE-PROPOSAL SCREENING

A. Upon request of Contractor, a pre-proposal screening meeting will be scheduled and conducted by the City of Aurora Project Manager for Contractor to present anticipated proposal.

B. Representatives of the Contractor, City of Aurora Project Manager, Engineer, Owner and, if applicable, Subcontractor or Vendor will be present at meeting, each having authority to make decisions regarding the VECP for their respective employers.

C. City of Aurora Project Manager, Engineer, and Owner will render a preliminary opinion as to relative merits of proposal during meeting. Contractor is not to assume acceptance of VECP based on City of Aurora Project Manager, Engineer, or Owner concurrence with merits of preliminary proposal but, having obtained a positive opinion, may continue to develop the proposal.

D. If proposal is found to have merit, City of Aurora Project Manager and Engineer will confirm minimum technical content requirements to be submitted by Contractor with the intent to minimize proposal resubmittals.

E. Any VECP received which has not been introduced in a pre-proposal screening may be rejected without review.

1.6 VECP PROPOSAL SUBMITTAL

A. VECP shall not be submitted if Gross Savings Amount will total less than $20,000

B. Contractor shall prepare and submit four (4) copies to City of Aurora Project Manager.

C. Include, as a minimum, the following information with each VECP:

1. Description of the difference between Contract requirement and VECP.

2. Comparative advantages and disadvantages between Contract requirement and VECP.

3. Itemization of requirements of Contract which must be changed if VECP is adopted, and a recommendation as to how to make such change (e.g.

drawing numbers and specifications).

4. Justification for change in function or characteristic, if appropriate, of each affected item and effect of change on performance of end item.

VALUE ENGINEERING 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 24 13 - 3 JULY 2025

5. Detailed cost estimate, with itemized breakdown containing quantities and unit prices for both original design and proposed change. Cost estimate shall include Contractor Costs, including amounts attributable to subcontracts. Basis for estimate shall also be included

6. Prediction of effects VECP would have on Owner Costs, such as additional engineering costs, Owner-furnished equipment costs, costs of related items, and costs of maintenance and operation.

7. Statement of time by which a Change Order adopting VECP must be issued, so as to obtain maximum cost reduction.

8. Proposed revisions to construction schedule, if any.

D. Owner has the right to reject, without review, any VECP that does not contain the specified documentation.

E. Contractor may withdraw the whole or part of a submitted VECP prior to acceptance by City of Aurora Project Manager, Engineer, and Owner.

1.7 CONSTRUCTION SAVINGS SHARING

A. If VECP is accepted, the resulting deductive Change Order to Contract will be in an amount equal to fifty (50) percent of VECP Construction Savings Amount, to be determined as follows, V = G-(C+O), where:

G = Gross Savings Amount;

C = Contractor Costs;

O = Owner Costs;

V = VECP Construction Savings Amount.

1.8 EXECUTABLE VECP

A. If the VECP is accepted, a deductive Change Order will be prepared, in accordance with this section and the “changes” clause of these Contract Documents, adjusting Contract Price and other affected provisions.

B. Unless and until a VECP Change Order is executed by both parties, Contractor shall remain obligated to perform in accordance with terms of the Contract.

C. Acceptance of VECP and performance of the Work hereunder shall not extend Contract Times, unless specifically provided for in the Change Order authorizing

VECP.

D. Contractor’s profit shall not be reduced by acceptance of VECP.

E. Contractor is not entitled to share in concurrent, collateral, or future contract savings.

F. Owner may accept, in whole or in part, the submitted VECP. Owner may modify a VECP, with concurrence of Contractor, to make it acceptable.

VALUE ENGINEERING 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 24 13 - 4 JULY 2025

G. Neither Owner nor City of Aurora Project Manager, nor Engineer shall be liable for delays in acting upon, or for failure to act upon, a submitted VECP.

H. Decisions of Owner as to acceptance of VECP under these Contract Documents shall be final and shall not be subject to the “Claims” clause of Contract.

I. Contractor may restrict Owner’s right to use any portion of a VECP or its supporting data submitted pursuant to this section, in accordance with the terms of the following if it is noted on such:

J. “These data are furnished pursuant to a value engineering change proposal and shall not be disclosed to an entity other than Owner, Engineer and City of Aurora Project Manager, or to be duplicated, used, or disclosed, in whole or in part, for any purpose other than to evaluate a value engineering change proposal. This restriction does not limit Owner’s right to use information contained in these data if it is or has been obtained from another source, or is otherwise available without limitations. If such a proposal is accepted by Owner by issuance of a Change Order, Owner shall have the right to duplicate, use and disclose any data pertinent to the proposal as accepted, in any manner and for any purpose whatsoever.”

K. In the event of acceptance of VECP, Contractor hereby grants to Owner all rights to use, duplicate or disclose in whole or part, in any manner and for purpose whatsoever, and to have or permit others to do so, any data reasonably necessary to fully utilize such proposal.

L. Any additional costs directly related to the execution of the VECP that were not identified in the Contractor’s proposal shall be borne by the Contractor.

1.9 NONEXECUTABLE VECP

A. If VECP is not accepted, City of Aurora Project Manager will notify Contractor in writing, explaining reasons. Contractor’s costs of development of VECP are nonrecoverable in such an event.

B. In the event Contractor withdraws from VECP that has been previously agreed upon by all parties, City of Aurora Project Manager’s and Engineer’s costs for evaluating VECP will be deducted from Contract Price via a Change Order.

CONTRACT MODIFICATION PROCEDURES 2025 TRANSMISSION MAINS REHABILITATION PROGRAM

01 26 00 - 1 JULY 2025

SECTION 01 26 00 – CONTRACT MODIFICATION PROCEDURES

PART 1 - GENERAL

1.1 FIELD ORDERS

A. City of Aurora Project Manager will issue Field Orders electronically using the designated Electronic Document Management Program.

B. Effective date of the Field Order shall be the date of signature by Owner’s Project Manager, unless otherwise indicated thereon.

C. Field Orders will be incorporated into subsequent Change Orders as no-cost changes to the Contract.

1.2 CHANGE ORDERS

A. Requests for Quotation:

1. Owner may, in anticipation of ordering an addition, deletion, or revision to the Work, request Contractor to prepare a detailed quotation of cost and times to perform contemplated change.

2. Request for Quotation will include reference number for tracking purposes and detailed description of and reason for proposed change, and such additional information as appropriate and as may be required for Contractor to accurately estimate cost and time impact on Project.

3. Request for Quotation is for information only; Contractor is neither authorized to execute proposed change nor to stop Work in progress as result of such request.

4. Contractor’s written quotation shall be transmitted to City of Aurora Project

Manager promptly using the Electronic Document Management System, but not later than 14 days after Contractor’s receipt of Owner’s written request. The quotation shall remain firm for a maximum period of 45 days after receipt by City of Aurora Project Manager.

5. Owner’s Request for Quotation or Contractor’s failure to submit such quotation within the required time period will not justify a Claim for an adjustment in Contract Price or Contract Times (or Milestones).

1.3 CHANGE ORDER PROCEDURE:

A. Once the quotation is agreed to by Owner and Contractor, the City of Aurora Project Manager will prepare a Change Order proposal and transmit such to Contractor for signature in the Electronic Document Management System.

01 26 00 - 2 JULY 2025

B. Contractor shall, upon receipt, either: (i) promptly sign the proposal, and return to the City of Aurora Project Manager for Owner’s signature, or (ii) return unsigned proposal with written justification for not executing Change Order.

C. City of Aurora Project Manager will upon receipt of Contractor signed copy, promptly forward partially executed copy for Owner’s signature, or if Contractor refuses or fails to execute the Change Order, City of Aurora Project Manager will promptly so notify Owner and transmit Contractor’s justification to Owner.

D. Upon receipt of Contractor-executed Change Order proposal, Owner will promptly either:

1. Execute a Change Order, retaining the original copy for its file and returning a copy to City of Aurora Project Manager, or

2. Return to City of Aurora Project Manager unsigned copy with written justification for not executing Change Order.

E. Upon receipt of Owner-executed Change Order, City of Aurora Project Manager will transmit one copy to Contractor, one copy to Engineer, and retain one copy, or if Owner fails to execute the Change Order, City of Aurora Project Manager will promptly so notify Contractor and transmit Owner’s justification to Contractor. City of Aurora Project Manager shall post an electronic copy of the Owner-executed change order to the Electronic Document Management System.

F. Upon receipt of Owner-executed Change Order, Contractor shall:

1. Perform Work covered by Change Order.

2. Revise Schedule of Values to adjust Contract Price and submit with next Application for Payment.

3. Revise Progress Schedule to reflect changes in Contract Times, if any, and to adjust times for other items of Work affected by change.

4. Enter changes in Project record documents after completion of change related Work.

G. In signing a Change Order, Owner and Contractor acknowledge and agree that:

1. Stipulated compensation (Contract Price or Contract Times, or both) set forth includes payment for (i) the Cost of the Work covered by the Change Order,

(ii) Contractor’s fee for overhead and profit, (iii) interruption of Progress Schedule, (iv) delay and impact, including cumulative impact, on other Work under the Contract Documents, and (v) extended overheads.

2. Change Order constitutes full mutual accord and satisfaction for the change to the Work;

3. Unless otherwise stated in the Change Order, all requirements of the original Contract Documents apply to the Work covered by the Change Order.

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1.4 WORK CHANGE DIRECTIVES

A. Procedures:

1. City of Aurora Project Manager will initiate Work Change Directives, including a description of the Work involved and any attachments. The City of Aurora Project Manager will obtain Designer and Owner review and acceptance in the Electronic Document Management System.

2. Upon completion of Work covered by the Work Change Directive or when Contract Times and Contract Price is determined for that change, Contractor shall submit documentation for inclusion in a Change Order.

3. Contractor’s documentation shall include but not be limited to:

a. Appropriately detailed records of Work performed to enable determination of cost of the Work.

b. Full information required to substantiate resulting change in Contract Times and Contract Price for Work. On request of City of Aurora Project Manager, provide additional data necessary to support documentation.

c. Support data for Work performed on a unit price or Cost of the Work basis with additional information such as:

i. Dates Work was performed, and by whom.

ii. Time records, signed daily by the City of Aurora Project Manager, wage rates paid, and equipment rental rates.

iii. Invoices and receipts for materials, equipment, and subcontracts, all similarly documented.

4. Effective Date of Work Change Directive: Date of signature by Owner, unless otherwise indicated thereon.

1.5 CLAIMS

A. All claims must comply with Article 10 of the General Conditions.

B. Include the following documentation, at a minimum:

1. Specific references including (i) Drawing numbers, (ii) Specification section and article/paragraph number, and (iii) Submittal type, Submittal number, date reviewed, Engineer’s comment, as applicable, with appropriate attachments.

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2. Stipulated facts and pertinent documents, including photographs and statements.

3. Interpretations relied upon.

4. Description of (i) nature and extent of Claim, (ii) who or what caused the situation, (iii) impact to the Work and work of others, and (iv) discussion of claimant’s justification for requesting a change to price or times or both.

5. Estimated adjustment in price claimant believes it is entitled to with full documentation and justification.

6. Requested Change in Contract Times: Include at least (i) Progress Schedule documentation showing logic diagram for request, (ii) documentation that float times available for Work have been used, and (iii) revised activity logic with durations including sub-network logic revisions, duration changes, and other interrelated schedule impacts, as appropriate.

7. Documentation as may be necessary as set forth below for Work Change Directive, and as City of Aurora Project Manager may otherwise require.

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SECTION 01 29 76 – MEASUREMENT AND PAYMENT GENERAL

PART 1 - GENERAL

1.1 MEASUREMENT - GENERAL

A. Weighing, measuring, and metering devices used to measure quantity of materials for Work shall be suitable for purpose intended and conform to tolerances and specifications as specified in National Institute of Standards and Technology, Handbook 44.

B. Whenever pay quantities of material are determined by weight, material shall be weighed on scales furnished by Contractor and certified accurate by state agency responsible. Weight or load slip shall be obtained from weigh station and delivered to City of Aurora Project Manager at point of delivery of material.

C. If material is shipped by rail, car weights will be accepted provided that actual weight of material only will be paid for and not minimum car weight used for assessing freight tariff, and provided further that car weights will not be acceptable for material to be passed through mixing plants.

D. Vehicles used to haul material being paid for by weight shall be weighed empty daily and at such additional times as required by the City of Aurora Project Manager. Each vehicle shall bear a plainly legible identification mark.

E. Materials that are specified for measurement by the cubic yard measured in the vehicle shall be hauled in vehicles of such type and size that actual contents may be readily and accurately determined. Unless all vehicles are of uniform capacity, each vehicle must bear a plainly legible identification mark indicating its water level capacity.

Vehicles shall be loaded to at least their water level capacity. Loads hauled in vehicles not meeting above requirements or loads of a quantity less than the capacity of the vehicle, measured after being leveled off as above provided, will be subject to rejection, and no compensation will be allowed for such material.

F. Quantities Based on Profile Elevations: Existing ground profiles indicated on Drawings were taken from a topographic map drawn with contour intervals of 1 foot.

G. Quantities will be based on ground profiles shown. Field surveys will not be made to confirm accuracy of elevations shown.

H. Where measurement of quantities depends on elevation of existing ground, elevations obtained during construction will be compared with those shown on Drawings.

Variations of 1 foot or less will be ignored, and profiles shown on Drawings will be used for determining quantities.

I. Units of measure shown on Bid Form shall be as follows, unless specified otherwise.

J. Pipe measurement shall be based on horizontal stationing as indicated in the Drawings.

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Item Method of Measurement

AC Acre—Field Measure by City of Aurora Project Manager

CY Cubic Yard—Field Measure by City of Aurora Project Manager within limits specified or shown

CY-VM Cubic Yard—Measured in Vehicle by Volume

EA Each—Field Count by City of Aurora Project Manager

GAL Gallon—Field Measure by City of Aurora Project Manager

HR Hour

LB Pound(s)—Weight Measure by Scale

LF Linear Foot—Field Measure by City of Aurora Project Manager

MFBM Thousand Foot Board Measure— Field Measure by City of Aurora Project Manager

SF Square Foot

SY Square Yard

TON Ton—Weight Measure by Scale (2,000 pounds)

If any unit priced pay items are to be dependent on additional measurement parameters (other than the linear unit listed in Bid Form), define the measurement parameters and how they will be measured during construction and by whom. When defining measurement parameters, focus on keeping it simple for the City of Aurora Project Manager or Engineer to field-measure, minimizing opportunities for dispute, and minimizing opportunities for the Contractor to claim or bill the city for quantities in excess of the design (i.e. use neatline quantities for concrete structures.)

1.2 PAYMENT

A. Payment for all Lump Sum and Unit Price Work shown or specified in Contract Documents is included in the Contract Price. Payment will be based on a percentage complete basis for each lump sum line items and actual Work completed for unit price line items of the accepted Bid Form.

B. Payment for Lump Sum Work covers all Work specified or shown within the limits or Specification sections as follows:

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Item No. Item Description Measurement and Payment

General Bid Items

1 Mobilization/Demobilization/ Bonds/Schedule/Permits

This item includes obtaining of all permits and conformance to all permit requirements, bonds, insurance, public and media relations, administrative items, moving onto the site, furnishing and erecting temporary construction facilities, project signs, and all other work and operations that must be performed or costs incurred before beginning Work on the project Site, as well as demobilization and project closeout, all as required for the complete and proper performance and completion of the Work.

Payment will be made based on the Lump Sum price in the Bid Form, as follows:

1. The initial request for payment will be made for either: (whichever is greater) a.) Twenty-five percent of the cost of this bid item, or

b) the amount of the cost of the payment and performance bonds as proven with a paid invoice.

2. The next 60% of the Lump Sum price in the Bid Form may be requested when 10% or more of the BID AMOUNT is earned.

3. The final 15% of the Lump Sum price in the Bid Form may be requested upon demobilization from the site.

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2 Rock Excavation Includes furnishing all materials, equipment, labor, and incidentals for all work required for complete rock excavation and disposal and fill with foundation stabilization material.

Measurement for this item will be on the actual volume of rock excavated as determined by a field measurement performed by the City of Aurora Project Manager. Payment shall be made based on the unit price bid per cubic yard in the Bid Form.

3 Foundation Stabilization Excavation and Installation

Includes furnishing and installing all materials, equipment, labor, and incidentals for all work required for complete placement of foundation stabilization excavation.

The City of Aurora Project Manager shall determine the suitability of the soils and if over excavation is required. Measurement for this item will be on the actual volume of material excavated as determined by a field measurement performed by the City of Aurora Project Manager. Payment shall be made based on the unit price bid per cubic yard in the Bid Form.

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4 Foundation Stabilization Material

Includes furnishing all materials, and incidentals for all work required for furnishing foundation stabilization material.

The City of Aurora Project Manager shall determine the suitability of the soils and if foundation stabilization material is required. Measurement for this item will be on the actual volume of stabilization material installed as determined by a field measurement performed by the City of Aurora Project Manager. Payment shall be made based on the unit price bid per cubic yard in the Bid Form.

5 Pressure Testing, Cleaning, Flushing and Disinfection

This item includes all materials, equipment, labor, and incidentals for all work required to successfully pressure test, clean, flush and disinfect the pipelines and appurtenances.

Work includes, but is not limited to complete installation and removal of temporary bulkheads, and hydrostatic pressure testing, cleaning, flushing, and disinfecting the pipeline and appurtenances, complete in accordance with the Contract Documents.

Non potable water piping and appurtenances need not be disinfected (refer to Specification Section 01 74 30 – Pressure Pipe Testing, Cleaning and Disinfection).

No measurement for payment shall be made. Payment may be requested upon successful completion of hydrostatic pressure testing, cleaning, flushing and disinfecting including pipeline drain down through blow-off assemblies. Payment shall not exceed the Lump Sum amount in the Bid Form. No payment will be made for repair of defective work required to successfully complete hydrostatic pressure testing, cleaning, flushing and disinfection.

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6 Site Restoration and Fencing This item includes all materials, equipment, labor, and incidentals for all work required to restore all disturbed areas to their pre-construction condition, or better as indicated in the Contract Documents. Work includes but is not limited to surface roughening, seeding, mulching, mowing, removal/replacement of fencing as necessary for construction and as indicated, removal and construction of additional fencing as indicated, and maintenance of seeded areas until receipt of Final Payment, and replacement and/or repair of all disturbed fencing as required by the Contract Documents.

Payment for this lump sum item shall be as follows:

1. Up to 60% of the Lump Sum amount may be requested based on the percentage of site restoration and fencing replaced and/or repaired in accordance with the Contract Documents, as determined by a field measurement performed by the City of Aurora Project Manager.

2. The remaining 40% may be requested based on the percentage of disturbed areas roughened or mulched and seeded in accordance with the Contract Documents, as determined by a field measurement performed by the City of Aurora Project Manager.

7 Dewatering This item includes furnishing all materials, equipment, labor, permits, and incidentals required to for all dewatering to complete the Work. Any crushed rock or pea gravel, pumping systems and under drain systems used in or near the trench as part of the dewatering operation shall be included in this bid item.

Measurement for this item will be on work completed as determined by the Owner and City of Aurora Project Manager.

Payment shall be made based on the lump sum and description provided in the bid tabulation.

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8 Erosion Control Allowance This item includes furnishing all materials, equipment, labor, and incidentals required to provide additional erosion control features and facilities as required by agencies having jurisdiction, and is not indicated in the Contract Documents. The Contractor shall include the allowance listed for this item in the bid tabulation.

The Owner and City of Aurora Project Manager shall have sole discretion regarding assignment of work under this bid item. When requested by the City of Aurora Project Manager, the Contractor shall prepare a cost proposal for work performed under this bid item including cost of materials, labor and subcontractors.

Profit and any other administrative costs shall be assigned and allocated in accordance with the General Conditions.

The Owner and the City of Aurora Project Manager will review the proposal and either provide notice to proceed or obtain another entity to perform the work.

9 Site Restoration Allowance This item includes furnishing all materials, equipment, labor, and incidentals required to restore the ground above the pipeline within the construction limits to original condition as required by individual property owners that is outside the items detailed in bid item 6, and is not indicated in the Contract Documents.

The Contractor shall include the allowance listed for this item in the bid tabulation.

The Owner and City of Aurora Project Manager shall have sole discretion regarding assignment of work under this bid item. When requested by the City of Aurora Project Manager, the Contractor shall prepare a cost proposal for work performed under this bid item including cost of materials, labor and subcontractors.

Profit and any other administrative costs shall be assigned and allocated in accordance with the General Conditions.

The Owner and the City of Aurora Project Manager will review the proposal and either provide notice to proceed or obtain another entity to perform the work.

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10 Minor Contract Revisions Allowance

This item includes furnishing all materials, equipment, labor, and all other incidental work necessary to provide work as authorized by the City of Aurora Project Manager

The Owner and City of Aurora Project Manager shall have sole discretion regarding assignment of work under this bid item. When requested by the City of Aurora Project Manager, the Contractor shall prepare a cost proposal for work performed under this bid item including cost of materials, labor and subcontractors.

Profit and…