HomeMy WebLinkAboutresolution.council.106-24RESOLUTION # 106
(Series of 2024)
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ASPEN,
COLORADO, APPROVING A CONTRACT BETWEEN THE CITY OF ASPEN
AND G.A. Western Inc. AUTHORIZING THE CITY MANAGER TO
EXECUTE SAID CONTRACT ON BEHALF OF THE CITY OF ASPEN,
COLORADO.
WHEREAS, there has been submitted to the City Council a contract for Mill
Street Bridge maintenance, between the City of Aspen and G.A. Western Inc., a
true and accurate copy of which is attached hereto as Exhibit "A";
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF
THE CITY OF ASPEN, COT ORADO,
That the City Council of the City of Aspen hereby approves that Contract for
Mill Street Bridge maintenance between the City of Aspen and G.A. Western Inc.
a copy of which is annexed hereto and incorporated herein, and does hereby
authorize the City Manager to execute said agreement on behalf of the City of
Aspen.
INTRODUCED, READ AND ADOPTED by the City Council of the City of
Aspen on the 27th day of August 2024.
Torre, Mayor
I, Nicole Henning, duly appointed and acting City Clerk do certify that the
foregoing is a true and accurate copy of that resolution adopted by the City Council
of the City of Aspen, Colorado, at a meeting held, August 27th, 2024.
Nicole Henning, City Clerk
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C_ ITY OF A
STANDARD FORM OF
PROFESSIONAL SERVICES
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CITY c�F ASPEN
City of Aspen Contract No.: 2024-356
AGREEMENT made this 1 Stt' day of August, in the year 2024.
BETWEEN the City:
The City of Aspen
c/o Sara Ott
427 Rio Grande Place
Aspen, Colorado 81611
Phone: (970) 920-5079
And the Professional:
GA Western Construction Co.
c/o Joseph Kelly
3354 C Road
Palisade, CO 81526
970-434-6102
renee��awestern.corn
For the Following Project:
Contract Amount:
Total: $�799695050
If this Agreement requires the City to pay
an amount of money in excess of
$100,000.00 it shall not be deemed valid
until it has been approved by the City
Council of the City of Aspen.
City Council Approval:
Date: 8�27/2024
Resolution No.: 2024-106
Mill Street Bridge Waterproofing Membrane and Asphalt Paving
Exhibits appended and made a part of this Agreement:
Exhibit A: Proposal including Scope of Work and Fee Schedule, and CDOT documentation.
The City and Professional agree as set forth below.
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1. Scope of Work. Professional shall perform in a competent and professional manner the Scope
of Work as set forth at Exhibit A attached hereto and by this reference incorporated herein.
2, Completion, Professional shall commence Work immediately upon receipt of a written Notice
to Proceed from the City and complete all phases of the Scope of Work as expeditiously as is
consistent with professional skill and care and the orderly progress of the Work in a timely manner.
The parties anticipate that all Work pursuant to this Agreement shall be completed no later than
October 31, 2024. Upon request of the City, Professional shall submit, for the City's approval, a
schedule for the performance of Professional's services which shall be adjusted as required as the
project proceeds, and which shall include allowances for periods of time required by the City's project
engineer for review and approval of submissions and for approvals of authorities having jurisdiction
over the project. This schedule, when approved by the City, shall not, except for reasonable cause, be
exceeded by the Professional.
3. Payment. In consideration of the worts performed, City shall pay Professional on a time and
expense basis for all work performed. The hourly rates for work performed by Professional shall not
exceed those hourly rates set forth at Exhibit A appended hereto. Except as otherwise mutually agreed
to by the parties the payments made to Professional shall not initially exceed the amount set forth
above. Professional shall submit, in timely fashion, invoices for work performed. The City shall
review such invoices and, if they are considered incorrect or untimely, the City shall review the matter
wProfessional within ten days from receipt of the Professional's bill,
4. Non-Assi ability. Both parties recognize that this Agreement is one for personal services
and cannot be transferred, assigned, or sublet by either party without prior written consent of the other.
Sub -Contracting, if authorized, shall not relieve the Professional of any of the responsibilities or
obligations under this Agreement. Professional shall be and remain solely responsible to the City for
the acts, errors, omissions or neglect of any subcontractors' officers, agents and employees, each of
whom shall, for this purpose be deemed to be an agent or employee of the Professional to the extent
of the subcontract. The City shall not be obligated to pay or be liable for payment of any sums due
which may be due to any sub -contractor.
5. Termination of Procurement. The sale contemplated by this Agreement may be
canceled by the City prior to acceptance by the City whenever for any reason and in its sole
discretion the City shall determine that such cancellation is in its best interests and convenience.
6. Termination of Professional Services. The Professional or the City may terminate the
Professional Services component of this Agreement, without specifying the reason therefor, by
giving notice, in writing, addressed to the other party, specifying the effective date of the termination.
No fees shall be earned after the effective date of the termination. Upon any termination, all finished
or unfinished documents, data, studies, surveys, drawings, maps, models, photographs, reports or
other material prepared by the Professional pursuant to this Agreement shall become the property of
the City. Notwithstanding the above, Professional shall not be relieved of any liability to the City for
damages sustained by the City by virtue of any breach of this Agreement by the Professional, and
the City may withhold any payments to the Professional for the purposes of set-off until such time
as the exact amount of damages due the City from the Professional may be determined.
7. Independent Contractor Status. It is expressly acknowledged and understood by the parties
that nothing contained in this agreement shall result in or be construed as establishing an employment
relationship. Professional shall be, and shall perform as, an independent Contractor who agrees to
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use his or her best efforts to provide the said services on behalf of the City. No agent, employee, or
servant of Professional shall be, or shall be deemed to be, the employee, agent or servant of the City.
City is interested only in the results obtained under this contract. The manner and means of
conducting the work are under the sole control of Professional. None of the benefits provided by City
to its employees including, but not limited to, workers' compensation insurance and unemployment
insurance, are available from City to the employees, agents or servants of Professional. Professional
shall be solely and entirely responsible for its acts and for the acts of Professional's agents, employees,
servants and subcontractors during the performance of this contract. Professional shall indemnify
City against all liability and loss in connection with and shall assume full responsibility for payment
of all federal, state and local taxes or contributions imposed or required under unemployment
insurance, social security and income tax law, with respect to Professional and/or Professional's
employees engaged in the performance of the services agreed to herein.
8. Indemnification. Professional agrees to indemnify and hold harmless the City, its officers,
employees, insurers, and self-insurance pool, from and against all liability, claims, and demands, on
account of injury, loss, or damage, including without limitation claims arising from bodily injury,
personal injury, sickness, disease, death, property loss or damage, or any other loss of any kind
whatsoever, which arise out of or are in any manner connected with this contract, to the extent and
for an amount represented by the degree or percentage such injury, loss, or damage is caused in whole
or in part by, or is claimed to be caused in whole or in part by, the wrongful act, omission, error,
professional error, mistake, negligence, or other fault of the Professional, any subcontractor of the
Professional, or any officer, employee, representative, or agent of the Professional or of any
subcontractor of the Professional, or which arises out of any workmen's compensation claim of any
employee of the Professional or of any employee of any subcontractor of the Professional. The
Professional agrees to investigate, handle, respond to, and to provide defense for and defend against,
any such liability, claims or demands at the sole expense of the Professional, or at the option of the
City, agrees to pay the City or reimburse the City for the defense costs incurred by the City in
connection with, any such liability, claims, or demands. If it is determined by the final judgment of a
court of competent jurisdiction that such injury, loss, or damage was caused in whole or in part by the
act, omission, or other fault of the City, its officers, or its employees, the City shall reimburse the
Professional for the portion of the judgment attributable to such act, omission, or other fault of the
City, its officers, or employees.
9. Professional's Insurance.
(a) Professional agrees to procure and maintain, at its own expense, a policy or policies
of insurance sufficient to insure against ali liability, claims, demands, and other obligations
assumed by the Professional pursuant to Section 8 above. Such insurance shall be in addition
to any other insurance requirements imposed by this contract or by law. The Professional shall
not be relieved of any liability, claims, demands, or other obligations assumed pursuant to
Section 8 above by reason of its failure to procure or maintain insurance, or by reason of its
failure to procure or maintain insurance in sufficient amounts, duration, or types.
{b} Professional shall procure and maintain, and shall cause any subcontractor of the
Professional to procure and maintain, the minimum insurance coverages listed below. Such
coverages shall be procured and maintained with forms and insurance acceptable to the City.
All coverages shall be continuously maintained to cover all liability, claims, demands, and
other obligations assumed by the Professional pursuant to Section 8 above. In the case of any
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claims -made policy, the necessary retroactive dates and extended reporting periods shall be
procured to maintain such continuous coverage.
(i) WoNke��'s Compensation insurance to cover obligations imposed by applicable
laws for any employee engaged in the performance of work under this contract, and
Employers' Liability insurance with minimum limits of ONE MII�LION DOLLARS
($1,000,000.00) for each accident, ONE MILLION DOLLARS ($I,000,000.00)
disease -policy limit, and ONE MILLION DOLLARS ($1,000,000.00) disease -each
employee. Evidence of qualified self -insured status may be substituted for the
Worker's Compensation requirements of this paragraph.
(ii) Comme��cial Genef�al Liability insurance with minimum combined single
limits of TWO MILLION DOLLARS ($2,000,000.00} each occurrence and THREE
MILLION DOLLARS ($3,000,000.00) aggregate. The policy shall be applicable to
all premises and operations. The policy shall include coverage for bodily injury, broad
form property damage (including completed operations), personal injury (including
coverage for contractual and employee acts), blanket contractual, independent
contractors, products, and completed operations. The policy shall include coverage
for explosion, collapse, and underground hazards. The policy shall contain a
severability of interests provision.
(iii) Comprehensive Automobile Liability insurance with minimum combined
single limits for bodily injury and property damage of not less than ONE MILLION
DOLLARS ($1, 000, 000.00) each occicr�ence and TWO MILLION DOLLARS
(�$2, 000, 000.00) aggregate with respect to each Professional's owned, hired and non -
owned vehicles assigned to or used in performance of the Scope of Work. The policy
shall contain a severability of interests provision. If the Professional has no owned
automobiles, the requirements of this Section shall be met by each employee of the
Professional providing services to the City under this contract.
(iv) P��ofessional Liability insurance with the minimum limits of ONE MILLION
DOLLARS ($I,000,000) each claim and TWO MILLION DOLLARS ($2,000,000)
aggregate.
(c) The policy or policies required above shall be endorsed to include the City and, the City's
officers and employees as additional insureds. Every policy required above shall be primary
insurance, and any insurance carried by the City, its officers or employees, or carried by or
provided through any insurance pool of the City, shall be excess and not contributory
insurance to that provided by Professional. No additional insured endorsement to the policy
required above shall contain any exclusion for bodily injury or property damage arising from
completed operations. The Professional shall be solely responsible for any deductible losses
under any policy required above.
(d) The certificate of insurance provided to the City shall be completed by the Professional's
insurance agent as evidence that policies providing the required coverages, conditions, and
minimum limits are in full force and effect, and shall be reviewed and approved by the City
prior to commencement of the contract. No other form of certificate shall be used. The certifi-
cate shall identify this contract and shall provide that the coverages afforded under the policies
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shall not be canceled, terminated or materially changed until at least thirty (30) days prior
written notice has been given to the City.
(e) Failure on the part of the Professional to procure or maintain policies providing the
required coverages, conditions, and minimum limits shall constitute a material breach of
contract upon which City may immediately terminate this contract, or at its discretion City
may procure or renew any such policy or any extended reporting peri
mod thereto and may pay
any and all premiums in connection therewith, and all monies so paid by City shall be repaid
by Professional to City upon demand, or City may offset the cost of the premiums against
monies due to Professional from City.
(f) City reserves the right to request and receive a certified copy of any policy and any
endorsement thereto.
(g) The parties hereto understand and agree that City is relying on, and does not waive or
intend to waive by any provision of this contract, the monetary limitations (presently
$350,000.00 per person and $990,000 per occurrence) or any other rights, immunities, and
protections provided bythe Colorado Governmental Immunity Act, Section 24-10401 etseq.,
C.R.S., as from time to time amended, or otherwise available to City, its officers, or its
employees.
10. Ciiy's Insurance. The parties hereto understand that the City is a member of the Colorado
Intergovernmental Risk Sharing Agency (CIRSA) and as such participates in the CIRSA Proper-
ty/Casualty Pool. Copies of the CIRSA policies and manual are kept at the City of Aspen Risk
Management Department and are available to Professional for inspection during normal business
hours. City makes no representations whatsoever with respect to specific coverages offered by
CIRSA. City shall provide Professional reasonable notice of any changes in its membership or
participation in CIRSA.
11. Completeness of Agreement. It is expressly agreed that this agreement contains the entire
undertaking of the parties relevant to the subject matter thereof and there are no verbal or written
representations, agreements, warranties or promises pertaining to the project matter thereof not
expressly incorporated in this writing.
12. Notice. Any written notices as called for herein may be hand delivered or mailed by certified
mail return receipt requested to the respective persons and/or addresses listed above.
13. Non -Discrimination. No discrimination because of race, color, creed, sex, marital status,
affectional or sexual orientation, family responsibility, national origin, ancestry, handicap, or religion
shall be made in the employment of persons to perform services under this contract. Professional
agrees to meet all of the requirements of City's municipal code, Section 15.04.570, pertaining to non-
dmnniscriiiin employment.
Any business that enters into a contract for goods or services with the City of Aspen or any of its
boards, agencies, or departments shall:
(a) Implement an employment nondiscrimination policy prohibiting discrimination in
hiring, discharging, promoting or demoting, matters of compensation, or any other
employment -related decision or benefit on account of actual or perceived race,
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color, religion, national origin, gender, physical or mental disability, age, military
status, sexual orientation, gender identity, gender expression, or marital or
familial status.
(b) Not discriminate in the performance of the contract on account of actual or
perceived race, color, religion, national origin, gender, physical or mental
disability, age, military status, sexual orientation, gender identity, gender
expression, or marital or familial status.
(c} Incorporate the foregoing provisions in all subcontracts hereunder.
14. Waiver. The waiver by the City of any term, covenant, or condition hereof shall not operate
as a waiver of any subsequent breach of the same or any other term. No term, covenant, or condition
of this Agreement can be waived except by the written consent of the City, and forbearance or
indulgence by the City in any regard whatsoever shall not constitute a waiver of any term, covenant,
or condition to be performed by Professional to which the same may apply and, until complete
performance by Professional of said term, covenant or condition, the City shall be entitled to invoke
any remedy available to it under this Agreement or by law despite any such forbearance or indulgence.
15. Execution of Agreement b� ity. This Agreement shall be binding upon all parties hereto
and their respective heirs, executors, administrators, successors, and assigns. Notwithstanding
anything to the contrary contained herein, this Agreement shall not be binding upon the City unless
duly executed by the City Manager of the City of Aspen (or a duly authorized official in the City
Manager's absence) and if above $100,000, following a Motion or Resolution of the Council of the
City of Aspen authorizing the City Manager (or other duly authorized official in the City Manager's
absence) to execute the same.
16. Warrantif
Gratuitif
icicbacks and
(a) Professional warrants that no person or selling agency has been employed or retained
to solicit or secure this Contract upon an agreement or understanding for a commission,
percentage, brokerage, or contingent fee, excepting bona fide employees or bona fide
established commercial or selling agencies maintained by the Professional for the purpose
of securing business.
(b) Professional agrees not to give any employee of the City a gratuity or any offer of
employment in connection with any decision, approval, disapproval, recommendation,
preparation of any part of a program requirement or a purchase request, influencing the
content of any specification or procurement standard, rendering advice, investigation,
auditing, or in any other advisory capacity in any proceeding or application, request for
ruling, determination, claim or controversy, or other particular matter, pertaining to this
Agreement, or to any solicitation or proposal therefore.
(c) Professional represents that no official, officer, employee or representative of the
City during the term ofthis Agreement has or one (1) year thereafter shall have any interest,
direct or indirect, in this Agreement or the proceeds thereof, except those that may have
been disclosed at the time City Council approved the execution of this Agreement.
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(d) In addition to other remedies it may have for breach of the prohibitions against
contingent fees, gratuities, kickbacks and conflict of interest, the City shall have the right
to:
1. Cancel this Purchase Agreement without any liability by the City;
2. Debar or suspend the offending parties from being a Professional, contractor or
subcontractor under City contracts;
3. Deduct from the contract price or consideration, or otherwise recover, the value of
anything transferred or received by the Professional; and
4. Recover such value from the offending parties.
17. Fund Availability. Financial obligations of the City payable after the current fiscal year
are contingent upon funds for that purpose being appropriated, budgeted and otherwise made
available. If this Agreement contemplates the City utilizing state or federal funds to meet its
obligations herein, this Agreement shall be contingent upon the availability of those funds for
payment pursuant to the terms of this Agreement.
18. General Terms.
(a) It is agreed that neither this Agreement nor any of its terms, provisions, conditions,
representations or covenants can be modified, changed, terminated or amended, waived,
superseded or extended except by appropriate written instrument fully executed by the parties.
(b) If any of the provisions of this Agreement shall be held invalid, illegal or
unenforceable it shall not affect or impair the validity, legaliiy or enforceability of any other
provision.
(c) The parties acknowledge and understand that there are no conditions or limitations to
this understanding except those as contained herein at the time of the execution hereof and
that after execution no alteration, change or modification shall be made except upon a writing
signed by the parties.
(d) This Agreement shall be governed by the laws of the State of Colorado as from time
to time in effect. Venue is agreed to be exclusively in the courts of Pitkin County, Colorado.
19. Electronic Signatures and Electronic Records This Agreement and any amendments
hereto may be executed in several counterparts, each of which shall be deemed an original, and
all of which together shall constitute one agreement binding on the Parties, notwithstanding the
possible event that all Parties may not have signed the same counterpart. Furthermore, each Party
consents to the use of electronic. signatures by either Party. The Scope of Work, and any other
documents requiring a signature hereunder, may be signed electronically in the manner agreed to
by the Parties. The Parties agree not to deny the legal effect or enforceability of the Agreement
solely because it is in electronic form or because an electronic record was used in its formation.
The Parties agree not to object to the admissibility of the Agreement in the form of an electronic
record, or a paper copy of an electronic documents, or a paper copy of a document bearing an
electronic signature, on the grounds that it is an electronic record or electronic signature or that it
is not in its original form or is not an original.
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20. Successors and Assigns. This Agreement and all of the covenants hereof shall inure to the
benefit of and be binding upon the City and the Professional respectively and their agents,
representatives, employee, successors, assigns and legal representatives. Neither the City nor the
Professional shall have the right to assign, transfer or sublet its interest or obligations hereunder
without the written consent of the other party.
21. Third Parties. This Agreement does not and shall not be deemed or construed to confer upon
or grant to any third party or parties, except to parties to whom Professional or City may
assign this Agreement in accordance with the specific written permission, any right to claim
damages or to bring any suit, action or other proceeding against either the City or Professional
because of any breach hereof or because of any of the terms, covenants, agreements or
conditions herein contained.
22. Attorneys Fees. In the event that legal action is necessary to enforce any of the provisions
of this Agreement, the prevailing party shall be entitled to its costs and reasonable attorney's
fees.
23. Waiver of Presumption. This Agreement was negotiated and reviewed through the mutual
efforts of the parties hereto and the parties agree that no construction shall be made or presumption
shall arise for or against either party based on any alleged unequal status of the parties in the
negotiation, review or drafting of the Agreement.
24. Certification Re�ardin� Debarment, Suspension,. Ineligibility, and Voluntary Exclusion.
Professional certifies, by acceptance of this Agreement, that neither it nor its principals is presently
debarred, suspended, proposed for debarment, declared ineligible or voluntarily excluded from
participation in any transaction with a Federal or State department or agency. It further certifies
that prior to submitting its Bid that it did include this clause without modification in all lower tier
transactions, solicitations, proposals, contracts and subcontracts. In the event that Professional or
any lower tier participant was unable to certify to the statement, an explanation was attached to
the Bid and was determined by the City to be satisfactory to the City.
2S. Integration and Modification. This written Agreement along with all Contract Documents
shall constitute the contract between the parties and supersedes or incorporates any prior written
and oral agreements of the parties. In addition, Professional understands that no City official or
employee, other than the Mayor and City Council acting as a body at a council meeting, has
authority to enter into an Agreement or to modify the terms of the Agreement on behalf of the
City. Any such Agreement or modification to this Agreement must be in writing and be executed
by the parties hereto.
26. The Professional in performing the Services hereunder must comply with all applicable
provisions of Colorado laws for persons with disability, including the provisions of §§24-85-101,
et seq., C.R.S., and the Rules Establishing Technology Accessibility Standards, as established by
the Office Of Information Technology pursuant to Section §24-85- 103(2.5) and found at 8 CCR
1501-11. Services rendered hereunder that use information and communication technology, as the
term is defined in Colorado law, including but not limited to websites, applications, software,
videos, and electronic documents must also comply with the latest version of Level AA of the Web
Content Accessibility Guidelines (WCAG), currently version 2.1. To confirm that the information
and communication technology used, created, developed, or procured in connection with the
Services hereunder meets these standards, Professional may be required to demonstrate
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compliance. The Professional shall indemnify the CITY pursuant to the Indemnification section
above in relation to the Professional's failure to comply with §§2445401, et seq., C.R.S., or the
Technology Accessibility Standards for Individuals with a Disability as established by the Office
of Information Technology pursuant to Section §24-85-103(2.5).
2 to Additional Provisions. In addition to those provisions set forth herein and in the Contract
Documents, the parties hereto agree as follows:
[ ] No additional provisions are adopted.
[X] See attached Exhibit A.
28. Authorized Representative. The undersigned representative of Professional, as an
inducement to the City to execute this Agreement, represents that he/she is an authorized
representative of Professional for the purposes of executing this Agreement and that he/she has
full and complete authority to enter into this Agreement for the terms and conditions specified
herein.
IN WITNESS WHEREOF, the parties hereto have executed, or caused to be executed by their duly
authorized officials, this Agreement of which shall be deemed an original on the date first written
above.
EN, COLORADO:
[Signature]
Sara G. Ott
By:
Title: city Manager
8/28/Z024 � 2:08:57 PM PDT
Date:
Approved as to form:
Signed by:
,Aa1AA1s I°. I'vrA.c.
City Attorneys Office
PROFESSIONAL:
by:
[S1
.7oseph Kelly
By:
Title:
President
Date: 8/15/Z024 � 3 : 01: Z1 PM MDT
dPW-8/15/2024-M:\citylcityatty\arch\ag 1-981.doc
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9
GENERAL CONTRACTING
3354 C Road Palisade, Colorado 81526 Phone (970)
FAX (970)
July 24, 2®24
Jack Danneberg, P.E.
Project Manager III
City of Aspen Engineering Dept.
427 Rio Grande Place
434-6102
434
- 0511
Aspen -Mill Street Bridge Waterproofing Membrane and Asphalt Paving
The following Lump Sum Bid Proposal includes asphalt removal, materials, waterproofing membrane,
labor &subsistence, mobilization, asphalt placement on both drive lanes and two adjacent sidewalks,
traffic control, striping and 100% payment and performance bonds held for two years.
TOTAL PRICE $279,695.50
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A. Work Scope
i, Traffic Control- traffic control plan and execution by CC Enterprises.
ii. Asphalfi removal
a. M illing of asphalt from the bridge deck at drive lanes by Frontier Paving.
b. Removal of asphalt from the 2 adjacent sidewalks by G.A. Western via a mini -excavator
c. Mill drive lane asphalt 2 inches in depth 60 feet East and 60 feet West of Mill
Street Bridge to allow for tie-in from existing roadway crown to the bridge
structure.
iii. Sandblast the existing concrete bridge deck and existing concrete jersey barriers.
The concrete jersey barriers/concrete parapet separate the 2 sidewalks from the
drive lanes. The concrete jersey barrier/concrete parapets have major spalling and
exposed reinforcement at the North side.
iv. Install Quickcrete mortar repair at concrete jersey barrier/concrete parapet spalling
locations. Complete repair with Quickrete DOT mix. Coat with Sherwin Williams
D.O.T. acrylic Texture Coating
v. Install Protecto Wrap M-400A Waterproofing Membrane (70 mil.) on concrete deck
and 6 inches up on concrete jersey barriers/concrete parapet.
Install in conformance with Colorado Dept. of Transportation specification Section
515 Waterproofing Membrane.
vi. Install new backer rod and sealant at East and West bridge to asphalfi expansion
joint.
vii. Place asphalt on the Mill Street bridge drive lanes (2 inch at the edges and 2 %" at
the center crown, 2 adjacent sidewalks (2 inches) and 60 feet East and 60 feet West
roadway (2 inches). Frontier Paving.
Binder: PG 58-28
Hot Mix Asphalt Grading SX,
Place Hot Mix Asphalt in conformance with Colorado Dept. of Transportation
specification Section 401- Plant Mix Pavements- General and Section 403 Hot Mix
Asphalt.
viii. Stripe bridge centerline and centerline on Mill Street 60 feet to the East and 60 feet
to the West.
B. Schedule
i. Single Lane Closure- 3 weeks per side x 2 sides= 6 weeks. Single lane closures will occur only during the
day. Requested start date:
9/3/24.
ii. Working hours- Monday through Thursday 7:00 a.m. to 5:30 p.m.
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BAB5D9BDC9
C. Cost
i. Single lane closure - 6 wee!<sa Requested start date: 9/3/24. IncludesPerformance Bond and
100% Payment Bond. Both held for 2 years.
$279,695.50
i. Prepare and submit a traffic control plan submittal prepared by a Traffic Control Supervisor for
review and approval by the City of Aspen. The traffic control plan shall be prepared to meet the
requirements set forth by the City of Aspen.
ii. Waterproofing Membrane
iii. Hot Mix Asphalt Paving
iv. Hot Mix Asphalt Paving placement methodology
E. Warranty
G.A. Western will provide a 1 year warranty for this
work.
F. Exhibits combined below
i. 6/30/24-Mill Street Bridge- Plan View- Field Measurements
2022- CDOT Standard Specifications 16001<-515 Waterproofing Membrane
C- 2022- CDOT Standard Specifications Book-401 Plant Mix Pavements
2022- CDOT Standard Specifications Book-403 Hot Mix Asphalt
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BAB5D9BDC9
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
bocusign Envelope ID: 86E2462F-C740-4960-AC31.01 BAB5D9BDC9
_SECTION 513
515.01
515.01 This wor(c consists of furnishing and placing an approved waterproofing membrane and protective covering over a
prepared concrete bridge deck surface or furnishing and placing an approved chemical concrete sealer (sealer) on the surface of a
concrete bridge deck, approach slabs, and all adjacent sidewalk and curb, and other applications designated on the plans.
515.02 The waterproofing membrane shall consist of one of the following:
1. A prefabricated reinforced membrane and primer or,
2. A single component, hot -applied elastomeric membrane and primer if required.
Materials for the waterproofing membrane shall meet the requirements specified in the following subsections:
Protective Covering 705.07
Prefabricated, Reinforced Membrane and Primer 705.08
Single Component, Hot Applied, Elastomeric.Membrane 705.09
515.03 Concrete sealer shall consist of an alkyl-alkoxy silane and shall be a penetrating type with 40 percent solids in water or a
high as organic solvent. The sealer shall be compatible with the curing compound used on the concrete and shall be one that is
included on the approved products list of the Department. A certificate of compliance shall be provided with each shipment of
sealer.
CONSTRUCTION REQUIREMENTS
515.04 Waterproofing Membrane.
(a) Condition of Concrete DecJzforAppJication of Waterproofing ILlembrane. The entire deck and the sides of the curbs for a
height of 2 inches above the plan thickness of the hot mix asphalt shall be free of all foreign material such as dirt, grease, old
pavement and primer. All decks shall be sand blasted or shot blasted. Immediately before the application of primer or any
type of membrane, all dust and loose material shall be removed. The deck condition will be approved before application of
the membrane.
(b) Weather and tlloistzrf•e Limitations for Application of T�Yatefproofrng Allembrane. Application of primer or membrane shall not
be done during inclement weather conditions, or when deck and ambient air temperatures are below 50 °FThe deck surface
shall be dry at the time of application of primer and membrane. .
(c) Application, Prefabricated, Reinforced Membrane. Primer shall be applied to the prepared concrete surface at the rate and
according to the procedure recommended by the membrane manufacturer. Placement of the membrane shall not begin until
the volatile material in the primer has dissipated. The membrane shall be placed in such a manner that a shingling effect will
be achieved, and any accumulation of water will be directed toward curbs and drains. Primer and membrane shall be placed
on the curb faces for a height of 2 inches above the plan thickness of the hot mix asphalt. The entire membrane shall be
essentially free of wrinkles, air bubbles and other placement defects. Blisters or bubbles larger than 2 inches in diameter,
which develop after placement of the membrane and before placement of protective covering, shall be punctured, the air
expelled, and membrane patched in a manner satisfactory to the Engineer. At all expansion joints, and other joints, membrane
shall be flashed up to the top of the joint and secured with primer. At drainpipes, membrane shall be placed in such a manner
that it extends down inside the drain and is secured with primer.
(d) Application, Single Component, Hot Applied, EJastomeric Uembrane. Hot applied membrane shall be applied to the
prepared deck surface at a uniform minimum rate of 1/2 gallon per square yard thickness of 90 to 110 mils, 1 mil = 0.001
inch. During application the thickness may be measured by the Engineer. Lack of uniform application shall be cause for
termination of the work until remedial measures are taken. Primer, if required, and membrane shall be placed up the curb
faces for a height of 2 inches above the plan thickness of hot mix asphalt.
515-1
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515.05
(e) Application of Protective Covering. As soon as practical, but in all cases the same day as membrane application,
protective covering shall be placed from gutter line to gutter line. Protective covering shall be laid parallel to the
centerline of the bridge. The protective covering shall be butted together at longitudinal and transverse joints.
Overlapping will not be permitted. The maximum allowable space between adjoining sections of protective covering
shall be 1 inch. Following placement of protective covering, a bead of compatible mastic or hot applied membrane shall
be applied where the protective covering contacts the curbs, and in cracks between adjoining sections that are apart by
more than 3/8 inch. The bead shall fill the void preventing water from entering at this point.
(� Inspection. Upon completion of the membrane and protective covering the Engineer will inspect the membrane system.
Approval in writing from the Engineer shall be obtained before application of hot mix asphalt. The Contractor shall be
responsible for maintaining the condition of the membrane system on the bridge deck until covered with hot mix asphalt
to the thickness required by the Contract.
(g) Overlay. Hot mix asphalt shall be placed, spread and compacted, per the specifications or as approved.
515.05 Concrete Sealer.
(a) Condition of Sarrface for Application of Sealer The surface of bridge deck, approach slabs, sidewalks, and curbs and the
interior concrete surface of drains shall be free of all residue and other surface contaminants. Within 48 hours before the
application of the sealer these surfaces shall be cleaned with dustless abrasive shot blasting. Other methods of blasting,
power washing, or cleaning may be used if approved. The amount of shot blasting or cleaning shall be sufficient to
remove all visual evidence of curing compound residue, dirt, grease, and surface contaminants. When wet methods are
used the surface shall be dried per subsection 515.04.
(b) Weather and Moista�re Limitations for Application of Sealer: Sealer shall not be applied when the deck or ambient air
temperature is below 40 °F, above 90 °F, or outside the manufacturer's recommended temperature range. The concrete
shall have aged a minimum of 28 days and the surface shall be dry at the time of application of the sealer. When the
surface is wet because of inclement weather, power washing, or other moisture, it shall be permitted to dry at least 24
hours before the sealer is applied. -
(c) Application of Seale: Sealer shall be applied uniformly at the manufacturer's recommended rate. The sealer shall be
applied to the surface of the concrete bridge deck, approach slabs, curbs including the face of concrete bridge rail for 6
inches above the bridge deck, sidewalks, and the interior concrete surface of drains. Two copies of the manufacturer's
literature for the sealer including the recommended application procedure shall be provided to the Engineer before
application. The literature shall include a product material safety data sheet.
All solvents, coatings, or other chemical products, or solutions, shall be mixed, handled, applied, stored and disposed of
in such a manner that spills, splashes, and drips shall be contained without contamination of the soil, vegetation, streams,
or other water bodies.
The Contractor shall provide two approved respirators for use by Department personnel.
Traffic shall not be allowed on the treated surface until the sealer has penetrated the concrete and the liquid sealer is no
longer visible on the surface. The Contractor shall follow all the manufacturer's recommendations, including penetration
time, before opening to traffic.
METHOD OF MEASUREMENT
515.06 Waterproofing membrane including protective covering, complete in place, will be measured by the number of __
square yards of bridge deck covered. Material placed on curb faces will not be measured.
Concrete sealer will be measured by the number of square yards of concrete surface covered, except material placed on drains
will not be measured.
515-2
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515.07
515.07 The accepted quantities of waterproofing membrane including protective covering will be paid for at the contract unit
price per square yard.
The accepted quantities of concrete sealer, including surface preparation, will be paid for at the contract unit price per square yard
of concrete surface covered. Preparation and sealing of drains will not be paid for separately but shall be included in the work.
Payment will be made under:
Pay Item Pay Unit
Waterproofing (Membrane) - Square Yard
Concrete Sealer Square Yard
Hot mix asphalt will be measured and paid for per Section 403.
515-3
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Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BAB5D98DC9
401.01
DIVISION 400
PAVEMENTS
SECTION 401
PLANT MIX PAVEMENTS -GENERAL
DESCRIPTION
401.01 These specifications include general requirements that are applicable to all types of hot mix asphalts irrespective of
gradation of aggregate, kind and quantity of asphalt cement, or pavement use. Deviations from these general requirements will be
indicated in the specific requirements for each type.
This work consists of one or more courses of asphalt mixture constructed on a prepared foundation per these specifications and
the specific requirements of the type under contract, and in conformity with the lines, grades, thicknesses, and typical cross
sections shown on the plans or established.
401.02 Composition of Mixtures. The asphalt plant mix shall be composed of a mixture of aggregate, filler or additives if
required and approved, asphalt cement, and reclaimed material if permitted and used.
(a) Mix Design. The Contractor shall submit the following to the Engineer:
1. A proposed hot mix asphalt mix design prepared per Colorado Procedure 52, including a proposed job -mix gradation for
each mixture required by the Contract, which shall be wholly within the Master Range Table in subsection 703.04 before
the tolerances shown in Section 401 are applied. The weight of lime shall be included in the total weight of the material
passing the 75 µm (No. 200) sieve. _..
2. The name of the refinery supplying the asphalt cement and the source of the anti -stripping additive.
3. A sufficient quantity of each aggregate for the Department to perform the tests specified in Section 3.2.1 of CP 52.
The Contractor's proposed job -mix formula for each hot mix asphalt grading will be tested by the Department utilizing
materials actually produced and stockpiled for use on the project.
The job -mix formula foi• each mixture shall establish a single percentage of aggregate passing each required sieve size, a
single percentage of asphalt cement to be added to the aggregate, and a single temperature for the mixture at the discharge
point of the plant.
When Laboratory tests indicate that a proposed job -mix formula complies with the specifications as revised for the project, a
Form 43 shall be executed between the Engineer and the Contractor to establish the job -mix formula.
After the Form 43 is executed, and all materials are available on the project, the Contractor shall notify the Engineer a
minimum of one working day in advance of beginning production of the hot mix asphalt. Any changes in the Form 43 will
require the same notification unless otherwise approved by the Engineer.
(b) 1Ifixtarres FzefAnished to the Project. After the job -mix formula is established, all mixtures furnished for the project shall
conform thereto within the ranges of tolerances listed in Table 401-1.
401-1
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401.02
Tabie 401-1
'TOLERANCES FOR HOT MIX ASPHALT
Asphalt Content 0.3%
Asphalt Recycling Agent 0.2%
'Hot Mix Asphalt — Item 403, Gradations
zPassing the 9.5 mm (3/8 inch) and larger sieves :L 6%
ZPassing the 4.75 mm (No. 4) and 2.36 mm (No. 8) sieves 5%
?Passing the 600 µm (No. 30) sieve =`4%
ZPassing the 75 µm (No. 200) sieve ::L 2%
'When 100% passing is designated, there shall be no tolerance: When 90 ' 100%
passing is designated, 90% shall be the minimum, no tolerance shall be used.
? These tolerances apply to the Contractor's Process Control Testing.
The job -mix formula for each mixture shall be in effect unless modified in writing on Form 43.
Should a change in sources of materials be made, a new job -mix formula shall be established before the new material is
used. This new job -mix formula shall be in effect until modified by the Engineer. Requests made in writing by the
Contractor for changes in the job -mix formula will be considered. The job -mix formula may be changed by the Engineer
if the change will produce a mixture of equal or better quality and will;
1. Permit better utilization of available material, or
2. Result in a saving in cost to the Department through an adjustment in unit price.
Tests for cleanliness, abrasion loss, and percent of fractured faces will be made on representative samples of aggregate
taken during production or from the stockpiles.
Hot mix asphalt (I-IMA) will be tested for moisture susceptibility by the Department per Table 401-2. If a sample fails to
meet the criteria shown in Table 401-2, the Contractor shall take corrective action before being permitted to continue
production. If proper corrective action cannot be readily determined, the Engineer will suspend the use of such material
until Laboratory tests indicate that the corrective measures taken by the Contractor will provide material that is in
compliance.
If one or more samples fail to meet the requirements of Table 401-2, material from the area represented by the failing
sample will be evaluated as follows:
If the area represented by the failing sample contains 2,000 tons of the new pavement or less, then the result for the
failing sample shall be considered a lot of one and will be evaluated according to the formulas and procedures in
subsection 105.03,
If the area represented by the failing sample contains more than 2,000 tons of the new pavement, then the material from
the area represented by the failing sample will be sampled and tested according to the following method;
Pavement samples foi• possible moisture susceptibility testing will be taken at a minimum frequency of once every 2,000
tons throughout the project. The Engineer will observe the sampling, take possession of the samples, and retain these
samples for possible testing. Sample size shall be a minimum of 20 pounds. If a 10,000-ton sample fails, then the four
2,0004on samples from the area represented by that failing 10,000-ton sample will be tested for moisture susceptibility.
The 10,000-ton result and the four 2,0004on results will be considered a lot of five and will be evaluated according to
the formulas and procedures in subsection 105.03. If less than four retained samples are on hand because the 10,0004on
sample represents less than 8,000 tons of hot mix asphalt, the price adjustment will be based on the test results from the
retained samples on hand plus the test result from the 10,0004on sample.
For the above evaluation, the "F" factor used in calculating P factors shall be 2.5. The P value shall be applied to price of
the HMA item. If asphalt cement is not paid for separately, the price reduction shall be multiplied by 0,6(I. Lottman P
values will not is combined with Pay Factors for other elements determined per Process Control/Owner Acceptance
(PC/OA) specifications.
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BA65D9BDC9
Grading
Table 401-2
HMA MOISTURE SUSCEPTIBILITY
TEST FREQUENCY/CRITERIA
Test Procedure
Minimum Test
Result
Sampling
Frequency
401.03 Aggregates. Aggregates shall meet the applicable requirements of subsection 703.04.
401.04 Mineral Filler. Mineral filler shall meet the requirements of subsection 703.06.
401.05 Hydrated Lime. Hydrated lime shall meet the requirements of subsection 712.03.
401.06 Asphalt Cements. The type and grade of asphalt cement will be specified in the Contract.
The asphalt cement shall meet the applicable requirements of Section 702.
CONSTRUCTION REQUIREMENTS
401.03
401.07 Weather Limitations and Placement Temperatures. Hot mix asphalt shall be placed only on properly prepared
unfrozen surfaces that are free of water, snow, and ice. The hot mix asphalt shall be placed only when both the air and surface
temperatures equal or exceed the temperatures specified in Table 401-3 and the Engineer determines that the weather conditions
permit the pavement to be properly placed and compacted.
Table 401-3
PLACEMENT TEMPERATURE LIMITATIONS IN °F
If the temperature falls below the minimum air or surface temperatures, paving shall stop.
The Contractor shall schedule the work so that no planed or recycled surface is left without resurfacing for more thanl0 calendar
days during the period specified in Table 401-4, below. The Contractor shall immediately place a temporary hot mix asphalt layer
on any surface that has been planed or recycled and cannot be resurfaced per the above temperature requirements within10
calendar days after being planed or recycled. The minimum thickness of the temporary hot mix asphalt layer shall be 2 inches.
The Contractor shall perform the process control required to assure adequate quality of the hot mix asphalt used in the temporary
layer. All applicable pavement markings shall be applied to the temporary layer surface. The Contractor shall maintain the
temporary layer for the entire period that it is open to traffic. Distress that affects the ride, safety, or serviceability of the
temporary layer shall be immediately corrected to the satisfaction of the Engineer. The temporary hot mix asphalt layer shall be
removed when work resumes.
401-3
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401.08
M IF1 U-UWJ X=!
PERIODS REQUIRING OVERLAY OF TREATED SURFACES
Location by Elevation
Period That Planned or Recycled
Surfaces Must be Overlaid within
10 Days
All areas below and including 7000 feet
October 1 to March 1
All areas above 7000 feet up to and
including 8500 feet
September 5 to April 1
All areas above 8500 feet
August 20 to May 15
401.08 Asphalt Mixing Plant. The asphalt mixing plant shall be capable of producing a uniform material, have adequate
capacity, and be maintained in good mechanical condition. Defective parts shall be replaced or repaired immediately if they
adversely affect the proper functioning of the plant or plant units, or adversely affect the quality of the hot asphalt plant mix.
Dust, smoke, or other contaminants shall be controlled at the plant site to meet all air quality requirements per subsections
107.01 and 107.24.
Acceptable safety equipment shall be provided by the Contractor to accommodate sampling and testing.
Hot asphalt plant mix shall not be stored longer than nine hours, unless additional pt•otective measures are used and approved.
When hot asphalt plant mix is obtained fi•om a commet•cial plant, the Contractor shall make arrangements for approved
laboratory facilities at the plant site for testing hot asphalt paving mixtures. The plant laboratory shall meet the requirements
of subsection.
401.09 Hauling Equipment. Trucks used for hauling asphalt mixtures shall have tight, clean, smooth metal beds thinly
coated with a trtinimttm amount of paraffin oil, lime solution, or other approved release agent. Petroleum distillates such as
kerosene or fuel oil will not be permitted. Each truck shall have a cover of canvas or other suitable material to protect the
mixture from the weather.
401.10 Asphalt Pavers. Self-propelled asphalt pavers shall be provided and equipped with an activated screed assembly,
heated, if necessary, capable of spreading and finishing the asphalt plant mix material in lane widths applicable to the typical
section and thicknesses shown in the Contract. Pavers used for shoulders and similar construction shall be capable of
spreading and finishing courses of asphalt plant mix material in widths shown in the Contract.
The payer's receiving hopper shall have sufficient capacity for a uniform spreading operation and shall have an automatic
distribution system that will place the mixture uniformly in front of the screed.
The screed or st►•ike-off assembly shall produce the specified finished surface without tearing, shoving, or gouging the
mixture.
The paver shall include an approved longitudinal paver wedge system to create a sloped safety edge as shown on the plans. The
wedge system shall be attached to the screed and shall compact the H1V1A to a density at least as dense as the compaction imparted
to the rest of the HMA layer by the paving screed. The system shall provide a sloped safety edge equal to 32 degrees plus or minus
5 degrees measured from the pavement surface cross slope extended. A single plate strike off shall not be used. The system shall be
adjustable to accommodate varying paving thicknesses. The Engineer may allow the Contractor to use handwork for short sections
or to saw cut the sloped safety edge after paving operations are completed in areas such as transitions at driveways, intersections,
interchanges.
The Contractor shall submit the proposed paver wedge system for approval at the Pre -construction Conference. The Engineer
may require proof that the system has been used on previous projects with acceptable results ot• may require a test section
constructed before the beginning of work to demonstrate that it creates an acceptable wedge shape and compaction. Paving
shall not begin until the system is approved in writing by the Engineer. The safety edge may be constructed on each lift of
HMA or on the full -specified plan depth on the final lift. The finished shape of the safety edge shall extend for the full depth
of the asphalt pavement or for the top 5 inches whichever is less.
The paver shall be capable of operating at forward speeds consistent with uniform and continuous laying of the mixture. Stop and
go operations of the paver shall be avoided.
4014
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401.11
The asphalt paver shall be equipped with a means of preventing the segregation of the coarse aggregate particles from the remainder
of the asphalt plant mix when that mix is carried from the paver hopper back to the paver augers. The means and methods used shall
be approved by the paver manufacturer and may consist of chain curtains, deflector plates, or other such devices and any
combination of these.
The following specific requirements shall apply to the identified asphalt pavers:
(1) Blaw-Knox asphalt pavers shall be equipped with the Blaw-Knox Materials Management Kit (MMK).
(2) Cedarapids asphalt pavers shall be those that were manufactured in 1989 or later.
(3) Caterpillar asphalt pavers shall be equipped with deflector plates as identified in the December 2000 Service Magazine
entitled "New Asphalt Deflector Kit 16630, 6631, 66401".
Before the start of using the paver for placing plant mix, the Contractor shall submit for approval a full description in writing of
the means and methodologies that will be used to prevent asphalt paver segregation. Use of the paver shall not commence before
receiving approval from the Engineer.
The Contractor shall supply a Certificate of Compliance that verifies that the approved means and methods used to prevent
asphalt paver segregation have been implemented on all pavers used on the project.
Pavers shall be equipped with automatic screed controls with sensors capable of sensing grade from an outside reference line and
maintaining the screed at the specified longitudinal grade and transverse slope. The sensor shall be constructed to operate from
either or both sides of the paver and shall be capable of working with the following devices.
(1) Ski -type device at least 30 feet in length.
(2) Short ski or short shoe.
(3) At least 5,000 feet of control line and stakes.
The type or types of devices to be furnished shall be as provided in the Contract.
The controls shall be capable of maintaining the screed at the specified transverse slope within plus or minus 0.1 percent.
Manual operation will be permitted for constructing irregularly shaped and minor areas.
If the automatic controls fail or malfunction the equipment may be operated manually for the remainder of the normal working day,
provided specified results are obtained.
If the Contractor fails to obtain and maintain the specified surface tolerances, the paving operations shall be suspended until
satisfactory corrections, repairs, or equipment replacements are made.
Placement of hot mix asphalt on a waterproofed bridge deck shall be accomplished with equipment that will not damage the
membrane or protective covering.
401.11 Tack Coat. When ordered by the Engineer or specified in the Contract, a tack coat shall be applied between pavement
courses and paid for per Section 407.
401.12 Surface Conditioning. Irregularities in the existing pavement or base shall be brought to uniform grade and cross
section.
Before placing tack coat and beginning overlay work, the surface to be tack coated shall be swept to remove accumulations of
Ioose gravel and debris.
Asphalt plant mix shall be placed only on properly constructed surfaces that are free from substances that would adversely affect
the pavement quality.
Contact surfaces of curbing, gutters, manholes, and other structures shalt be painted with a uniform coating of asphalt cement
before placing asphalt mixture against them. .
401.13 Preparation of Asphalt Cement. The asphalt cement shall be heated to the specified temperature without local
overheating and shall be continuously supplied to the mixer at a uniform temperature within the specified range.
401.14 Preparation of Aggregates. Heating and drying of the aggregates shall be accomplished without damaging the
aggregate.
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401,15
When hydrated time is used it shall be added to the aggregate per one of the following methods:
(a) Lime SluriyAdded toAg, legate, The hydrated lime shall be added to the aggregate in the form of a slurry and then
thoroughly mixed in an approved pugmill. The slurry shall contain a minimum of 70 percent water by weight.
(b) Diy Lime Added to Wet Aggregate, The dry hydrated lime shall be added to the blended aggregate wetted a minimum of
2 percent above the surface saturated dry condition (SSD) as shown on the Form 43, and then thoroughly mixed in an
approved pugmill. The Engineer will not require the Contractor to increase the moisture above 5 percent total, although
the Contractor may elect to do so if the added water is necessary to meet the minimum Lottman specification (See Table
401-2).
The Contractor may request that the 2 percent above SSD requirement be waived, provided the requirements of CPI'5150
have been met. If the HMA fails to meet the minimum TSR requirements defined in Table 40 1 -2 at any point during
production, the Contractor shall immediately be required to add the minimum amount of moisture as defined above.
The lime -aggregate mixture may be fed directly into the hot plant after mixing or it may be stockpiled for not more than 90
days before introduction into the plant for mixing with the asphalt cement. The hydrated lime may be added to different sized
aggregates and stockpiled, by adding 75 percent of the lime to the aggregate passing the 4,75 min (No. 4) sieve and 25
percent to the aggregate retained on the 4.75 mm (No. 4) sieve.
In oT•der to ensure the required lime and water quantities a►•e introduced, lime and water feed for lime operation shall have
control systems that change introduction rates in conjunction with changes in plant mix production. The control systems
shall be documented in the Contractor's PC Plan,
When a test for aggregate percent moisture falls below the required minimum, the Contractor will receive a warning. When
two consecutive tests for aggregate percent moisture fall below the required minimum, a follow up test will immediately be
performed. A failure on the follow up test will result in suspension of work. Production will remain suspended until the
source of the problem is identified and corrected. Each time production is suspended, corrective actions shall be proposed in
writing by the Contractor and approved in writing by the Engineer before production may resume.
401.15 Mixing. The dried aggregates and asphalt shall be combined in the mixer in the quantities required to meet the job -
mix formula.
The materials shall be mixed until the aggregate is completely and uniformly coated, and the asphalt is uniformly distributed
throughout the aggregate.
The minimum temperature of the mixture when discharged fi•om the mixer and when delivered for use shall be as shown in
Table 401-5:
Table 401-5
HMA MINIMUM DISCHARGE/DELTVERY TEMPERATURES
401-6
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4ol.ls
Hot mix asphalt mixture shall be produced at the lowest temperature within the specified temperature range that produces a
workable mix and provides for uniform coating of aggregates (95 percent minimum per AASHTO T 195), and that allows the
required compaction to be achieved.
Storing or holding of asphalt mixture will be permitted provided the characteristics of the mixture are not altered. If storing or
holding of the mixture causes segregation, excessive heat loss, or adversely affects the quality of the finished product, corrective
action shall betaken. Unsuitable mixture shall be disposed of at the Contractor's expense.
When placing hot asphalt mixture over bridge decks covered by waterproofing membrane, the minimum temperature of the
mixture when rolling operations begin shall be 250 °F. The job -mix formula temperature may be increased up to 30 °F to obtain
this temperature.
401.16 Spreading and Finishing. Asphalt pavers shall be used to distribute the mixture to the established grade and required
thickness over the entire width or partial width as practicable.
The longitudinal joint in both a new pavement and an overlay pavement layer shall offset the joint in the layer immediately below
by 6 inches. In every pavement layer, the longitudinal joints shall not be constructed in the wheel paths. The Contractor shall
submit a longitudinal joint and pavement marking plan three days before the Pre -paving Conference. The plan shall show the
location and configuration of the proposed longitudinal joints and pavement markings and shall detail the methods to be used to
field establish a control line. The Contractor shall use a continuous string line to delineate every longitudinal joint during paving
operations. All exposed siring line shall be picked up and disposed of at the end of each days paving. Paving shall not
commence until the plan has been approved in writing by the Engineer. The joints in the top layer of pavement shall be located as
follows unless otherwise approved in writing by the Engineer:
1. For 2-lane roadways, offset 6 to 12 inches from the center of pavement and from the outside edge of travel lanes.
2. For roadways of more than 2 lanes, offset 6 to 12 inches from lane lines and outside edge of travel lanes.
Longitudinal joints shall not cross the centerline, lane line, or edge line unless approved by the Engineer.
Where paving operations are on the present traveled roadway, the Contractor shall arrange paving operations so there will be no
exposed longitudinal joints between adjacent travel lanes at the end of a days run. With the approval of the Engineer, the
Contractor may leave an exposed longitudinal joint conforming to the following:
1. When the thickness of the pavement course being placed is 1.5 inches or less a vertical exposed longitudinal joint may be
constructed.
2. When the thickness of the pavement course being placed is greater than 1.5 inches the joint shall be constructed according to
one of the following:
A. The entire joint shall be tapered 3:l or flatter. A Taper steeper than 3:1 shall be considered vertical.
B. The top portion of the longitudinal joint may be vertical. The vertical portion shall be a maximum of 1.5 vertical inches.
The remainder of the joint, below the vertical portion, shall be tapered 3:1 or flatter.
On areas where the use of mechanical spreading and finishing equipment is impracticable, the mixture shall be dumped,
spread, raked, screeded, and luted by hand tools to the required compacted thickness and grades.
Production of the mixture shall be maintained so pavers can be used in echelon to place the wearing course in adjacent lanes.
The asphalt mixture shall be transported and placed on the roadway without segregation. All segregated areas behind the
paver shall be removed immediately upon discovery. The segregated material shall be replaced with specification material
before the initial rolling has taken place. If more than 50 square feet of segregated pavement is ordered removed and replaced
in any continuous 500 linear feet of paver width laydown, operations shall be discontinued until the source of the segregation
has been found and corrected.
If at any time, the Engineer observes segregated areas of pavement, they will notify the Contractor immediately.
After rolling, segregated areas will be delineated by the Engineer and evaluated as follows:
1. The Engineer will delineate the segregated areas to be evaluated and inform the Contractor of the location and extent of these
areas within two calendar days, excluding weekends and holidays, of placement.
401-7
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BAB5D9BDC9
401.17
2. In each segregated area or group of areas to be evaluated, the Contractor shall take five 10-inch cores at random
locations designated by the Engineer, Per CP 753 the Contractor shall also take five 10-inch cores at random locations
designated by the Engineer in non -segregated pavement adjacent to the segregated area. These cores shall be within 30
feet of the boundary of the segregated area and in the newly placed pavement. The coring shall be in the presence of the
Engineer and the Engineer will take immediate possession of the cores. The Contractor may take additional cores at the
Contractor's expense.
3. Gradation of the aggregate of the cores will be determined by CDOT per CP 46.
4. The core aggregate gradations from the segregated area will be compared to the core aggregate gradations of the
corresponding non -segregated area.
5. Two lcey sieves of the core gradations from the segregated area will be compared to the core gradations fi•om the
corresponding non -segregated area to determine the difference. If differences for both key sieves exceed the allowable
difference specified in the table below, the area is segregated.
Table 401-6
SEGREGATION DETERIVIINATION
Mix Grading
Key Sieves
Allowable Difference,
SX
2.36 mm (#8),
9
4.75 mm (#4)
S
2.36 mm (#8),
4.75 mm (#4)
6. Segregated areas in the top lift shall be removed and replaced, full lane width, at the Contractor's expense. The Engineer
may approve a method equivalent to removal and replacement that results in a non -segregated top lift. Segregated areas, in
lifts below the top lift that are smaller than 50 square feet per 100 linear feet of lane width shall be corrected by the
Contractor at the Contractor's expense in a manner acceptable to the Engineer. Segregated areas larger than 50 square feet
per 100 linear feet of lane width in any lift shall be removed and replaced, full lane width, by the Contractor at the
Contractor's expense.
If the area is determined to be segregated, the coring shall be at the expense of the Contractor. If the area is determined
to be non -segregated, the Engineer will reimburse the Contractor $2,000 for obtaining the 10 cores.
The Engineer will perform a systematic segregation check per CP 58 as early in the project as is feasible to determine if
temperature segregation problems exist. Temperature segregation will be of concern on the project if, across the width of the
mat, temperatures vary by 25 °F or more. Densities will not need to be taken in the systematic segregation check. The
Engineer will discuss the temperature findings of the systematic segregation check with the Contractor.
The Engineer may evaluate the HMA for low density due to temperature segregation whenever industry best practices, as
detailed on Form 1346, ar•e not being followed or the Engineer suspects temperature segregation is occurring. The Engineer
wI ll first meet with the Contractor to discuss the paving practices that are triggering the temperature investigation. Areas
across the mat, excluding the outside 1 foot of both edges of the mat, that are more than 25 °F cooler than other material
across the width may be marked for density testing. Material for temperature comparison will be evaluated in 3-foot intervals
behind the paver across the width of the mat. The material shall be marked and tested per CP 58. If four or more areas
within a lot of 500 tons have densities of less than 93 percent of the material's maximum specific gravity for SMA mixes or
less than 92 percent of the material's maximum specific gravity for all other HMA mixes, a 5 percent price disincentive will
be applied to the 500-ton lot. The 5004on count begins when the Engineer starts looking for cold areas, not when the first
cold area is detected. This price disincentive will be in addition to those described in Sections 105 and 106. Only one area
per delivered truck will be counted toward the number of low -density areas. Temperature segregation checks will be
performed only in areas where continuous paving is possible.
401.17 Compaction. The hot mix asphalt shall be compacted by rolling. Both steel wheel and pneumatic tire rollers will be
required. The number, weight, and type of rollers furnished shall be sufficient to obtain the required density while the mixture
is in a workable condition. Compaction shall begin immediately after the mixture is placed and be continuous until the
required density is obtained. When the mixture contains unmodified asphalt cement (PG 58-28 or PG 64-22) or modified (PG
58-34), and the surface temperature falls below 185 °F, further compaction effort shall not be applied unless approved,
provided the Contractor can demonstrate that there is no damage to the finished mat. If the mixture contains modified asphalt
cement (PG 76-28, PG 70-28 or PG 64-28) and the surface temperature falls below 230 °F, further compaction effort shall not
be applied unless approved, provided the Contractor can demonstrate that there is no damage to the finished mat.
4014
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BAB5D9BDC9
401.17
Warm Mix Asphalt compaction requirements shall conform to CP 59.
All roller marks shall be removed with the finish rolling. Use of vibratory rollers with the vibrator on will not be permitted during
surface course final rolling and will not be permitted on any rolling on bridge decks covered with waterproofing membrane.
SMA shall be compacted to a density of 93 to 97 percent of the daily theoretical maximum specific gravity, determined according
to CP 51. All other FD A shall be compacted to a density of 92 to 96 percent of the daily theoretical maximum specific gravity,
determined according to CP 51. If more than one theoretical maximum specific gravity testis taken in a day, the average of the
theoretical maximum specific gravity results will be used to determine the percent compaction. Field density determinations will
be made per CP 44 or 81.
The longitudinal joints shall be compacted to a target density of 92 percent of the theoretical maximum specific gravity. The
tolerance shall be plus or minus 4 percent. The theoretical maximum specific gravity used to determine the joint density will be
the average of the daily theoretical maximum specific gravities for the material that was placed on either side of the joint. Density
(percent relative compaction) will be determined per CP 44.
The Contractor shall obtain one 6-inch diameter core at a random location within each longitudinal joint sampling section for
determination of the joint density. The Contractor shall mark and drill the cores at the location directed by the Engineer and in the
presence of the Engineer. The Engineer will take possession of the cores for testing. The Contractor may take additional cores at
his own expense. Coring locations shall be centered on the visible line where the joint between the two adjacent lifts abuts the
surface. The center of all joint cores shall be within I inch of this visible joint line. Core holes shall be repaired by the Contractor
using materials and methods approved by the Engineer. PC and OA joint coring shall be completed within five calendar days of
joint construction.
Longitudinal joint coring applies to all pavement layers. When constructing joints in an echelon paving process, the joints shall be
clearly marked to ensure consistent coring location. In small areas, such as intersections, where the Engineer prescribes paving
and phasing methods, the Engineer may temporarily waive the requirement for joint density testing
Incentive or disincentive payment determined for joint density per subsection 105.05 will apply to the HMA on each side of the
joint. If a layer of pavement has joints constructed on both sides, incentive or disincentive payment for each of those joints will
apply to one half of the pavement between the joints.
Along forms, curbs, headers, walls, and all other places not accessible to the rollers, the mixture shall be thoroughly compacted
AM mechanical tampers.
Any mixture that becomes loose and broken, mixed with dirt, or is in any way defective, shall be immediately removed and
replaced with fresh hot mixture, and compacted to conform to the surrounding area.
The Contractor shall construct a compaction pavement test section (CTS) for each job mix where 2,000 or more tons are required
for the project. The CTS will be used to evaluate the number of rollers and the most effective combination of rollers and rolling
patterns for achieving the specified densities. Factors to be considered include, but are not limited to, the following:
(1) Number, size, and type of rollers.
(2) Amplitude, frequency, size and speed of vibratory rollers.
(3) Size, speed, and tire pressure of rubber tire rollers.
(4) Temperature of mixture being compacted.
(5) Roller patterns.
The CTS shall be constructed according to the following procedures:
The CTS shall be constructed to provide the nominal layer thickness specified. The first 500 tons of hot mix asphalt on the project
location shall constitute the CTS. The production and placement rates of the CTS shall closely approximate the anticipated
production and placement rates for the remainder of the Contract.
Compaction of the CTS shall commence immediately after the hot mix asphalt has been spread and shall be continuous and
uniform over the entire CTS. For the CTS, compaction shall continue until no discernible increase in density is obtained by
additional compactive efforts. All compaction shall be completed before the surface temperature of the mixture drops below 185
°F
Approved types of rollers shall be used to achieve the specified density. The Contractor shall determine what methods and
procedures are to be used for the compaction operation. The compaction methods and procedures shall be used uniformly over
the entire last 200 tons. The Contractor shall record the following information and a copy of this data shall be furnished to the
Engineer.
401-9
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01 BAB5D9BDC9
401.18
(1) Type, size, amplitude, frequency, and speed of roller.
(2) Tire pressure for rubber tire rollers, and whether the pass for vibratory rollers is vibratory or static.
(3) Surface temperature of mixture behind the laydown machine and subsequent temperatures and densities after each roller
pass.
(4) Sequence and distance from ay own machine for each roller, and number of passes of each roller to obtain specified
density.
Two sets of random cores shall be taken within the last 200 tons of the CTS. Each set shall consist of seven random
cores. The Engineer will determine the coring locations using a stratified random sampling process. The locations of
these cores will be such that one set can serve as a duplicate of the other. One set of these cores shall be immediately
submitted to the Engineer. This set will be used for determining acceptance of the CTS and determining density
correction factors for nuclear density equipment. Densities of the random samples will be determined by cores according
to CP 44. Density correction factors for nuclear density equipment will be determined according to CP 81. Coring shall
be performed under CDOT observation. Coring will not be measured and paid for separately but shall be included in the
work. For SMA, a CTS is not used. The Contractor shall follow the requirements for the demonstration control strip per
the Revision of Section 403, Stone Matrix Asphalt Pavement,
The CTS meets requirements if the Quality Level of the random samples is greater than or equal to 75. The Quality
Level will be determined according to CP 71. Once constructed and accepted, the CTS shall remain in place and become
part of the hot mix asphalt on the project.
When the Quality level is less than 75 the Contractor shall consteuct an additional test section, utilizing different rollers,
or roller positions, or roller patterns as required. A written proposal detailing the changes in methods and procedures that
will be used to obtain density is to be submitted to the Engineer for review before constructing the additional test section.
If the Quality Level of a CTS is less than 75 and greater than or equal to 44, the Engineer may accept the material at a
reduced price per Section 105.
If the Quality Level of a CTS is less than 44, the Engineer may:
(1) Require complete removal and replacement with specification material at the Contractor's expense.
(2) Where the finished product is found to be capable of performing the intended purpose and the value of the finished
product is not affected, as determined by the Engineer, permit the Contractor to leave the material in place with a pay
factor, but not more than 75 percent of the bid price.
Each CTS shall be 500 tons. If in -place densities of the CTS, as determined by nuclear density equipment before deternining
density of the cores, meet the CTS density requirements, the Contractor may begin production paving and continue to place
hot mix asphalt pavement under the following conditions:
(1) The period during which the Contractor continues to pave without test results from cores shall not exceed one workday.
(2) Construction proceeds at the Contractor's risk. If correlation with the cores reveals that the densities do not meet the
CTS requirements, the hot mix asphalt pavement placed subsequently will be subject to price reduction or removal and
replacement.
After production paving work has begun, a new Roller Pattern shall be demonstrated when a change in the compaction
process is implemented.
All additional costs associated with construction of the CTS shall be at the Contractor's expense. The hot mix asphalt placed
in the CTS will be paid for per subsection 401.22, at the contract price for the hot mix asphalt.
401.18 Joints. Placing of the hot mix asphalt shall be continuous, and rollers shall not pass over the unprotected end of a
freshly laid mixture. Transverse joints shall be formed by cutting back on the previous run to expose the full depth of the
course. A coat of asphalt cement shall be applied to contact surfaces of all joints just before additional mixture is placed
against the previously compacted material. Location and configuration of longitudinal joints shall be per subsection 401.16.
401.19 Pavement Samples. The Engineer may take samples of the compacted pavement at random locations on the project
for testing. Where samples have been taken, new material shall be placed and compacted by the Contractor to conform with
the surrounding area.
401.20 Surface Smoothness. The roadway surface smoothness shall be tested per subsection 105.07.
401-10
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-0740-4960-AC31-01 BAB5D9BDC9
401.21
METHOD OF MEASUREMENT
401.21 Hot mix asphalt and asphalt cement will be measured by the ton. Batch weights will not be permitted as a method of
measurement. The tonnage shall be the weight used in the accepted pavement. Deduction will not be made for the weight of
asphalt cement in the mixture.
BASIS OF PAYMENT
401.22 All work performed and measured as described above will be paid for as provided in the respective sections for each type
specified.
If there is no pay item for asphalt cement of the type specified it will not be measured and paid for separately but shall be included
in the work.
Water used in the mixing plant, per subsection 401.14, to bring the lime -aggregate mixture to approved moisture content will not
be measured and paid for separately but shall be included in the work.
Facilities for testing hot asphalt plant mix at the site of the commercial plant will not be paid for separately but shall be included
in the work.
When asphalt cement is a separate pay item, the amount of asphalt cement contained in reclaimed asphalt pavement (RAP)
material will not be measured or paid for but shall be included in the work.
Coring for in -place density, coring for longitudinal joint density, core hole repair, and associated expenses will not be paid for
separately but shall be included in the work. Traffic control for this work will be paid for per the contract.
All costs of the temporary hot mix asphalt layer required according to subsection 401.07, maintenance and removal of the
temporary pavement layer, temporary pavement marking, and traffic control will not be paid for separately but shall be included
in the work.
Ali costs associated with the construction of the safety edge specified in subsection 401.10 will not be paid for separately but shall
be included in the work.
401-11
Docusign Envelope ID: 22E3FE99-DAC9-44E7-9DD4-2C4E77B89DFE
Docusign Envelope ID: 86E2462F-C740-4960-AC31-01BAB5D9BDC9
403.01
SECTION 403
HOT MIX ASPHALT
DESCRIPTION
403.01 This work consists of constructing one or more courses of hot mix asphalt (HMA) on a prepared base per these
specifications, and in conformity with the lines, grades, thicknesses, and typical cross sections shown on the plans or established.
The asphalt pavement shall be composed of a mixture of aggregate, filler if required, and asphalt cement.
Hot Mix Asphalt (Patching) consists of those quantities required for the replacement of unstable corrugated areas in the existing
pavement, pipe trenches, areas removed for curb and gutter forms, areas between the curb and gutter or sidewalk and the existing
paved parking lots, and areas designated on the plans. These quantities will be restricted to small areas that require hand
placement methods and where conventional paving equipment cannot be utilized.
403.02 The materials shall conform to the requirements of subsections 401.02 through 401.06.
CONSTRUCTION REQUIREMENTS
403.03 The construction requirements shall be as prescribed in subsections 401.07 through 401.20,
Areas to be patched shall be excavated and squared to a neat line, leaving the sides of the excavation vertical. Before placement
of the patch, the exposed sides of the existing pavement shall be thoroughly coated with emulsified asphalt (slow -setting). Hot
mix asphalt shall then be placed and compacted in succeeding layers not to exceed 3 inches in depth.
METHOD OF MEASUREMENT
403.04 Hot mix asphalt will be measured as prescribed in subsection 401.21.
BASIS OF PAYMENT
403.05 The accepted quantities of hot mix asphalt will be paid for per subsection 401.22, at the contract unit price per ton for the
asphalt mixture.
Payment will be made under:
Pay Item
Hot Mix Asphalf (Grading_)
Hot Mix Asphalt (Grading_) (Asphalt)
Hot Mix Asphalt (Patching) (Asphalt)
Pay Unit
Aggregate, asphalt cement, asphalt recycling agent, additives, hydrated lime, and all other work necessary to complete each hot
mix asphalt item will not be paid for separately but shall be included in the unit price bid.
Excavation, preparation, and tack coat of areas to be patched will not be measured and paid for separately but shall be included in
the work.
403-1