WORK SEQUENCE (A) General

1) See Article 2 of the General Conditions regarding preliminary matters.

2) The Contractor will also be required to provide a drawing showing each proposed collection system sewage by-passing layout.

3) Contractor is responsible for construction sequencing. Below is a suggested Sequencing of Work. The Contractor has the option of following the Sequencing of Work or providing one for approval.

a. Install Erosion Control Devices.

b. Coordinate spotting of underground service with utility providers.

c. Install water quality improvements, bank improvements and plantings.

d. Final clean up.

(B) Survey

1) The reference points and benchmark are shown on the construction plans.

The Contractor must notify the engineer at least 48 hours prior to starting

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work on any sector or part of the work where controls have not been

established or are not identifiable or visible to the Contractor. The Engineer will upon such advance notice, replace any control points that have been destroyed by others prior to beginning of the Contractor's operations. After control points are established and / or identified as outlined above,

maintenance of such control points shall be the responsibility of the Contractor. Any re-staking required for any reason thereafter shall be the responsibility of the Contractor. The Contractor will provide all other

construction staking (cut stakes, blue topping, intermediate string line control, etc.) Required to verify grades, depths, thickness, and alignment of the various items of construction. The Contractor shall provide BPUB with "cut-sheets"

prior to approval for beginning construction projects. The "cut-sheets" will be used to verify pipe elevations.

2) Concurrent with performance of contract work, each Contractor shall prepare and maintain one neat and legible set of full-size contract drawings indicating

“as-built” conditions, including but not limited to changes in type, location, length, or size, for any item of work. “As-built” drawing mark-ups shall be prepared at the time the applicable item of work is constructed or installed.

The preparation of “as-built” drawings shall be as required by the Engineer and drawings shall be reviewed with the Engineer each month during construction. Prior to the final acceptance of contract work the Contractor shall submit to the Engineer one complete set of drawings showing all “as-built” work modifications.

(C) TESTS AND INSPECTIONS

1) All materials, equipment, installation and workmanship included in this contract, if so required by the Engineer, shall be tested and inspected to prove compliance with the contract requirements.

2) No tests specified herein shall be applied until the item to be tested has been inspected and approval given for the application of such test by an authorized representative of the manufacturer of the equipment.

3) Acceptance Tests and Inspection

a. With the exception of those construction material testing services provided by the Owner in Section 01450 – Testing Laboratories, the acceptance tests shall be at the Contractor’s expense for any materials or equipment specified herein. This is to include test of items during the process of manufacture and on completion of manufacture, comprising material test, hydraulic pressure tests, electric tests, performance and operating tests and inspections in accordance with the relevant standards of the industry, and more particularly as detailed in individual clauses of these specifications,

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or as may be required by the Engineer to satisfy himself that the items tested and inspected comply with the requirements of this contract.

b. All items delivered at the site shall be inspected in order that the Engineer may be satisfied that such items are of the specified quality and

workmanship and are in good order and condition at the time of delivery.

4) Installed Tests and Inspection

a. All mechanical, electrical, and instrumentation equipment shall be tested by the Contractor installing the equipment to the satisfaction of the Engineer before any facility is put into operation. Tests shall be as specified herein and shall be made to determine whether the equipment has been properly assembled, aligned, adjusted, end connected. Any changes, adjustments or replacements required to make the equipment operate as specified shall be carried out by the Contractor as part of the work.

b. At least 30 days before the time allowed in his construction schedule for commencing testing and start-up procedures, the Contractor shall submit to the Engineer, details of’ the procedures he proposes to adopt for testing and start-up of all mechanical, electrical and instrumentation equipment to be operated singly and together, except when such procedures have been covered in the specification

c. During the testing of mechanical, electrical, and instrumentation

equipment the contractor shall make available experienced factory trained representatives of the manufacturers of all the various pieces of

equipment, or other qualified persons who shall instruct the Owner’s personnel in the operation and care thereof. Instruction shall include step-by-step troubleshooting procedures with all necessary test equipment and a presentation to plant operating personnel.

d. If under test, any portion of the work shall fail to fulfill the contract requirements and is altered, renewed, or replaced, tests on that portion when so altered, renewed or replaced, tests on that portion when so altered, removed or replaced, together with all other portions of the work as are affected thereby shall if so required by the Engineer, be repeated within reasonable time and in accordance with the specified conditions, and the Contractor shall refund to the Owner all reasonable expenses incurred by the Owner as a result of the carrying out of such tests.

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e. Where, in the case of an otherwise satisfactory installed test, any doubt, dispute or difference should arise between the Engineer and the Contractor regarding the test results or the methods of equipment used in the carrying out by the Contractor as such test, then the Engineer may order the test to be repeated. If the repeat test using such modified methods or equipment as the Engineer may require substantially conforms the previous test then all costs in connection with the repeat test will be paid by the Owner, otherwise the costs shall be borne by the Contractor. Where the results of any installed test fail to comply with the contract requirements for such test, the repeat tests as may be necessary to achieve the contract

requirements shall be made by the Contractor at his own expense.