A.   The work included in the contract is to be done to the complete satisfaction of the Engineer, and the decision of the Engineer as to the true construction and meaning of the contract documents, plans, specifications, estimates, and as to all questions arising as to proper performance of the work, shall be final, except as provided in Section 1040, 1.10 - Disputed Claims for Extra Compensation.


B.   The Engineer shall determine the unit quantities and the classification of all work done and materials furnished under the provisions of the contract documents, and the Engineer's determination thereof shall be final except as provided in Section 1040, 1.10 - Disputed Claims for Extra Compensation.


C.   The Engineer shall decide any and all questions that may arise regarding the quality or acceptability of materials furnished and work performed, the rate of progress of the work, including cleanup and restoration, acceptable fulfillment and performance of the contract on the part of the Contractor, and compensation.  The decision of the Engineer in such matters shall be final except as provided in Section 1040, 1.10 - Disputed Claims for Extra Compensation.


D.   Nothing contained in this section or in the contract documents shall be construed as requiring or permitting the Engineer to direct the means, methods, sequences, or procedures, including safety measures, of performing any work under the contract or contract documents, except to ensure the quality of work conforms to these specifications and other provisions of the contract documents and the contract will be completed as scheduled.




A.   The Engineer may appoint a representative to monitor any or all materials used and work done.  Such observation may extend to any or all parts of the work and to the preparation or manufacture of the materials to be used.  The Engineer’s authorized representative will not be authorized to revoke, alter, enlarge, or relax the provisions of these specifications.  When placed on the work, the Engineer’s authorized representative will keep the Engineer informed as to the progress and quality of the work and the manner in which it is being done.


B.   Results of tests and examinations may be available to the Contractor on an informational basis.  Absence or presence of representative test data does not alter the Contractor's responsibility for compliance with the contract documents.  The Engineer’s authorized representative will call to the attention of the Contractor any lack of compliance with the contract documents.  However, failure of the Engineer’s authorized representative or the Engineer to call the attention of the Contractor to faulty work or to lack of compliance with the contract documents shall not constitute acceptance of such work.


C.   The Engineer’s authorized representative will not be authorized to approve or accept any portion of the work or to issue instructions contrary to the contract documents.  The Engineer’s authorized representative will act under the authority of the Engineer to reject defective work or material, and to suspend any work that is not being properly performed, subject to the final decision of the Engineer.


D.   The Engineer’s authorized representative will not act as supervisor or perform other duties for the Contractor, nor improperly interfere with management of the work.  The Engineer’s authorized representative will exercise such additional authority as may, from time to time, be delegated by the Engineer.




A.   A set of approved plans, specifications, contract documents, and any special provisions and authorized alterations will be supplied to the Contractor, and the Contractor shall have them available on the job site at all times.


B.   A competent, authorized representative of the Contractor shall be present on the site of the work continually during its progress.  This representative must be capable of reading and thoroughly understanding the contract documents and experienced in the type of work being performed.  This representative shall supervise, direct, and control the Contractor's operations, personnel, and work, and oversee the Subcontractor's operations.


C.   The Contractor shall give the Engineer written notification of the name of the Superintendent.  The Contractor or its Superintendent shall receive from the Engineer all explanations and directions necessary for the satisfactory prosecution and completion of the work.


D.   The Contractor shall not cause any unnecessary delay or hindrance to other contractors on the work and shall be required to cooperate with other contractors to the fullest extent.




A.   The Jurisdiction reserves the right to award other contracts in connection with this work and the total improvement.  The Contractor is required to become fully informed of the conditions relating to construction and labor under which the work will be or is now being performed, and the Contractor shall employ, as far as possible, such methods and means in the carrying out of its work as will not cause any interruption or interference with any other contractor or agency.  The Contractor shall give other contractors reasonable opportunity for the introduction and storage of their materials and the execution of their work, and shall properly integrate, incorporate, and/or coordinate its work with theirs.


B.   If any part of the Contractor's work depends for proper execution or results on the work of any other contractor, the Contractor shall inspect and promptly report to the Engineer any defect in such work by another contractor that renders it unsuitable for such proper execution and results.  The Contractor's failure to inspect and report such defects shall constitute an acceptance of the other contractor's work as fit and proper for the integration or incorporation of its work, except as to defects that may develop in the other contractor's work after the execution of the Contractor's work.


C.   Wherever work being done by the Jurisdiction's forces or by other contractors is contiguous to work covered by the contract, the respective rights of the various interests involved shall be established by the Engineer, in order to secure the completion of the various portions of the work in general harmony.


D.   Unless otherwise specified in the contract documents, the Contractor shall give notice, as hereafter provided, to all utilities, public and private agencies, abutting property owners, and all others affected by its operations as to time for starting and for completion of its work, names of streets or locations of alleys closed, schedule of operations, and routes of detours where possible.  Notification shall be made sufficiently ahead of time to provide proper re‑routing of traffic and erecting of signs before the work is to begin.


E.   The Contractor shall properly coordinate and expedite its work in such a manner as to cause the least amount of conflict and interference between its operation and those of all others affected by its operations.  Any or all damages or claims resulting from the improper or insufficient notification of all others affected by its operations shall be the responsibility of the Contractor.




A.   Submission of Drawings:


1.   The Contractor shall submit to the Engineer all shop drawings and equipment drawings or lists as called for in the contract documents or as requested by the Engineer.  Drawings and listings shall be complete and shall contain all required detail information conveyed according to the latest recommended standards for detailing.


2.   The Contractor shall make any corrections required by the Engineer and submit the revised shop or equipment drawings or listings for review.  After review by the Engineer, the shop or equipment drawings or listings will be so marked, dated, signed by the Engineer, and forwarded to the Contractor for reproduction and distribution.


B.   Submission of Equipment Lists:


1.   If requested in the contract documents, as soon as practicable after award of contract and before any items of material or equipment are purchased, the Contractor shall submit to the Engineer for review a complete list of the principal fixtures and equipment to be incorporated into the work.


2.   The Contractor shall also submit applicable brochures, technical data, catalogs, cuts, diagrams, manufacturer's drawings and installation instructions, samples if required, and other descriptive data including the complete description, trade name, model number, type, size, and rating.


C.   Engineer's Review:


1.   Review by the Engineer shall not be construed as a complete check but will indicate only that the general method of construction and detail is satisfactory.  The Engineer assumes no responsibility for errors in dimensions in the shop drawings and assumes the Contractor will use material complying with requirements of the contract documents or, where not specified, those of sound and reasonable quality, and will erect the subjects of such shop drawings according to recognized standards of first quality work or, when specified, according to standards of the contract documents.


2.   Any work done or material ordered by the Contractor prior to review by the Engineer shall be at the Contractor's risk.




A.   Expose possible conflicts, such as utility lines and drainage structures.  Verify elevations of each and verify clearances for proposed construction.


B.   Complete elements of the work that can affect line and grade in advance of other open cut construction unless noted on the plans.


C.   See Section 1040, 1.09 - Changed Site Conditions if unknown or changed conditions are encountered.




A.   The Contractor shall furnish the Engineer and its agents every reasonable opportunity to ascertain whether the work and materials are in reasonably close conformity with the contract documents.  At any time before final acceptance of the work, at the request of the Engineer, the Contractor shall remove or uncover portions of the work for examination.  After examination, the Contractor shall restore such portions of the work to the standards required by the contract documents.


B.   Should the work thus exposed and examined prove acceptable, the uncovering, removing, and replacing of such work shall be paid for as specified in Section 1090, 1.04 - Payment for Change Orders.  Should the work thus exposed and examined prove unacceptable, the uncovering, removing, and replacing of such work shall be at the Contractor's expense.




A.   Defective work or materials may be condemned by the Engineer any time before the final acceptance of the work.  Notice of such condemnation shall be given in writing by the Engineer.  Such condemned work shall be immediately corrected to the satisfaction of the Engineer.  Failure or neglect on the part of the Engineer to condemn unsatisfactory material or reject inferior workmanship shall not release the Contractor, nor shall it be construed as an acceptance of such work, nor shall the final acceptance of such work bar the Jurisdiction from recovering damages on account thereof.


B.   Any defective work shall be removed and replaced at the Contractor's expense.  Should the Contractor fail or refuse to remove defective work when so ordered by the Engineer, the Engineer shall have authority to order the Contractor to suspend further operations, and may withhold payment on estimates until such defective work has been removed and replaced according to the contract documents.


C.   Continued failure or refusal on the part of the Contractor to correct defective work promptly shall be sufficient cause for the Jurisdiction to declare the contract in default.  No compensation will be paid to Contractor for defective work or materials, or for the satisfactory removal, correction, or disposal thereof.




A.   Unauthorized work is work done contrary to the work shown in the contract documents.  The Jurisdiction will not pay for unauthorized work.


B.   Unauthorized work may be ordered to be removed and replaced immediately at the Contractor's expense.




A.   Minimum standards for construction survey provided by the Jurisdiction will meet the requirements of Section 11,010.  The Engineer will set the necessary stakes promptly upon notification by the Contractor that stakes are needed.


B.   The work shall be performed in strict conformity with the contract documents and to the lines and grades as fixed by the Engineer, and shall be according to such instructions as may be given by the Engineer.  When such stakes or lines are given by the Engineer, the Jurisdiction will be responsible for the correctness thereof, and the Contractor will be responsible for their proper use, interpretation, and preservation.


C.   The Contractor shall protect and preserve in their original position all stakes, points, or marks set for the work by the Engineer.  Where the Engineer shall consider such stakes, points, or marks to have been unnecessarily altered or destroyed, the Engineer may cause the expense of correcting or replacing them to be charged to the Contractor and the amount of such costs deducted from any monies due or which may become due to the Contractor under the contract.




A.   The Contractor shall make all necessary arrangements for the provision to the job site of all required utilities for the project.  The Contractor shall arrange its work so it will not be delayed because such regulations or requirements relating to the use of utilities.  All costs for the provision of utilities to the job site shall be borne by the Contractor.


B.   Fire hydrants shall not be used by the Contractor or its subcontractors unless authorization for such use has been obtained from the appropriate water utility agency.


1.12      SALVAGE


A.   When the contract documents specify salvage of materials for the Jurisdiction as part of the work, the material to be salvaged shall be carefully salvaged and delivered to the designated location in the best condition and ready for storage.  When the contract documents provide for salvage of such materials by the Contractor, the Contractor shall salvage such materials and promptly remove them from the site.


B.   The Contractor shall not allow inspection or sale of salvage materials to third parties at the site without written approval of the Jurisdiction.




A.   The Contractor shall comply with the requirements of the Clean Water Act (33 U.S.C. 1344 and 33 CFR 323) and Executive Order 11990.  When it becomes necessary for the Contractor to work in waters of the United States, the Contractor shall be aware that a Section 404 permit may be required.


B.   When required, the Contracting Authority will obtain a Section 404 permit for essential work on the right-of-way prior to the award of the contract.  The Contractor shall adhere to the requirements of the permit.  Activities occurring in or across waters of the United States not specifically reviewed and approved in the permit are not authorized.  If the Contractor desires to use construction methods that are not specifically approved by the permit, the Contractor shall be responsible for obtaining approval in the form of a new Section 404 permit from the U.S. Army Corps of Engineers and possibly Iowa DNR.  The Contractor shall not use construction methods that require additional mitigation by the Contracting Authority.  The Contractor will not be granted additional compensation or contract time due to their request for a new permit.  If, however, due to no fault of the Contractor, a Section 404 permit modification involving activities within the right-of-way is deemed necessary by the Engineer, additional contract time and/or compensation may be considered.




A.   As soon as practicable after the completion of the work, it will be inspected thoroughly by the Engineer.  The Contractor will be notified when the inspection is to be made so it or its representative may be present.


B.   If the inspection reveals any defects in the work as contemplated by the specifications, such defects shall be repaired or unsatisfactory work shall be replaced, as the Engineer may direct, before final acceptance.  The cost of all such repairs and replacement shall be borne by the Contractor, and no extension of the contract time shall be granted because of the time required to remedy such defects.


C.   When the work is found to be satisfactory, it will be accepted as provided in Section 1090, 1.08 - Acceptance and Final Payment.  Such final acceptance will not be reopened after having once been made, except on evidence of collusion, fraud, or obvious error.




If a form of automated machine guidance (AMG) is used for grading or paving operations, the following is required:


A.   At least one week prior to the preconstruction meeting, submit to the Engineer for review a written AMG work plan which indicates the following:

·         Equipment type

·         Control software manufacturer and version

·         Proposed location of GPS base station for broadcasting differential correction data to rover units

·         Proposed locations where AMG will be utilized


B.   Provide Engineer with up to 8 hours of formal training on Contractor’s AMG systems.


C.   For grading contracts, provide a rover for use by the Engineer.


D.  Check and recalibrate, if necessary, the AMG system at the beginning of each work day.


E.   Contractor will bear all costs associated with use of the AMG system, including but not limited to reconstruction of work that may be incurred due to errors in application of the AMG system.  Correction of grade elevation errors and any associated quantity adjustments resulting from the Contractor’s activities are to be done at no cost to the Contracting Authority.