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The work covered by this section consists of the excavation of approved material from borrow sources and the hauling and utilization of such material as required on the plans or directed by the Engineer. It shall also include the removing, stockpiling, and replacement of topsoil on the borrow source; the satisfactory disposition of material from the borrow source which is not suitable for use; and the satisfactory restoration of the borrow source and haul roads to an acceptable condition upon completion of the work.
Borrow excavation shall not be used before all available suitable unclassified excavation has been incorporated into the embankments, subgrades, and shoulders except by execution of a supplemental agreement documenting the conditions prescribed below.
1. Any suitable unclassified excavation wasted as a result of the utilization of borrow material by the Contractor will be deducted from the total volume of borrow excavation paid under the contract.
2. Any and all additional costs, including additional engineering cost incurred by the Department, associated with the wasting of suitable unclassified excavation will be borne exclusively by the Contractor.
3. Should the Contractor utilize borrow material prior to all suitable unclassified excavation being incorporated into the project pursuant to a supplemental agreement, the Contractor specifically waives any claim for contract time extensions related to the early utilization of borrow.
4. The Contractor specifically waives his rights to request additional compensation with regard to the early utilization of borrow under the compensation provisions of Section 104 except when unclassified excavation is a major contract item, as defined in Article 10153, and that unclassified excavation overruns by more than 25%.
Where the work required to complete the project is so phased by the plans to preclude utilizing suitable unclassified excavation, the Contractor will be permitted to construct the required embankments, subgrades, or shoulders so controlled by the phasing from approved borrow materials without having to execute the above required supplemental agreement.
230-2 COORDINATION WITH SEEDING OPERATIONS.
The Contractor shall coordinate the work covered by this section with the construction of embankments so that the requirements of Article 2252 are met.
All material shall meet the requirements of Division 10 shown below:
Borrow Material Section 1018
(A) General:
The surface of the borrow area shall be thoroughly cleared and grubbed and cleaned of all unsuitable material before beginning the excavation and, where applicable, before cross-sections are taken by the Engineer. Disposal of material resulting from clearing and grubbing shall be in accordance with Article 2005. The removal and disposition of overburden shall be in accordance with Section 802.
Each borrow operation shall not be allowed to accumulate exposed, erodible slope area in excess of 1 acre at any one given time without the Contractor's beginning permanent seeding and mulching of the borrow source or other erosion control measures as may be approved by the Engineer. (See Standard Special Provisions)
The topsoil shall be removed and stockpiled at locations that will not interfere with the borrow operations and that meet the approval of the Engineer. Temporary erosion control measures shall be installed as may be necessary to prevent the erosion of the stockpile material. Once all borrow has been removed from the source or portion thereof, the stockpiled topsoil shall be spread uniformly over the source.
Where payment is to be made by cross-section, the Contractor shall notify the Engineer sufficiently in advance of beginning excavation of the borrow material in order that the area may be staked and cross-sectioned by the Engineer. No payment will be allowed for any material excavated prior to cross-sections being taken. The excavation of the material shall be to the lines and slopes as staked by the Engineer and shall be done in an orderly manner to facilitate measurement at any time.
Where payment is to be made by truck measurement, the Contractor shall furnish trucks with bodies suitable for accurate measurement. Trucks shall be loaded uniformly and in such a manner as to prevent spillage.
Where it is necessary to haul borrow material over existing roads or streets, the provisions of Article 10515 shall apply and the Contractor shall use all necessary precautions to prevent damage to the existing structures or pavement. The Contractor shall also conduct his hauling operations in such a manner as to not interfere with the normal flow of traffic and shall keep the traffic lanes free from spillage at all times.
Borrow sources shall be furnished by the Contractor except where otherwise indicated by the plans or special provisions.
(B) Department Furnished Sources:
Where borrow sources are furnished by the Department the location of such sources will be as designated on the plans or as directed by the Engineer.
The Department will furnish the necessary haul road right of way at locations designated by the Engineer. All haul roads required shall be built, maintained, and when directed by the Engineer, obliterated, at no cost to the Department. Where the haul road is to be reclaimed for cultivation the Contractor shall plow or scarify the area to a minimum depth of 8 inches.
Where it is necessary to drain the borrow source the Contractor shall perform this work in accordance with Section 240.
The borrow sources shall be left in a neat and presentable condition after use. All slopes shall be smoothed, rounded, and constructed not steeper than 2:1. Where the source is to be reclaimed for cultivation the source shall be plowed or scarified to a minimum depth of 8 inches, disc harrowed, and terraces constructed.
All sources shall be seeded and mulched in accordance with Sections 1620, 1660, 1661, or 1662 unless otherwise directed by the Engineer.
(C) Contractor Furnished Sources:
Prior to the approval of any borrow source(s) developed for use on this project, the Contractor shall obtain certification from the State Historic Preservation Officer of the State Department of Cultural Resources certifying that the removal of the borrow material from the borrow source(s) will have no effect on any known district, site building, structure, or object that is included or eligible for inclusion in the National Register of Historic Places. A copy of this certification shall be furnished to the Engineer prior to performing any work on the proposed borrow source. (See Standard Special Provisions)
The approval of borrow sources furnished by the Contractor shall be subject to the following conditions:
1. The Contractor shall be responsible for acquiring the right to take the material and any rights of access that may be necessary; for locating and developing the source; and any clearing and grubbing and drainage ditches necessary. Such right shall be in writing and shall include an agreement with the owner that the borrow source may be dressed, shaped, seeded, mulched, and drained as required by these specifications after all borrow has been removed.
2. Sampling and testing of Contractor furnished borrow material shall be in accordance with procedures set forth in the "Procedures for Sampling and Approving Contractor Furnished Borrow Sources" in effect on the date of advertisement for the project. Copies of this document are available from the Materials and Tests Unit. The criteria for acceptance of the proposed contractor furnished borrow material is shown in Section 1018.
3. Except where borrow is to be obtained from a commercial source, the Contractor and the property owner shall jointly submit a borrow source development, use, and reclamation plan to the Engineer for his approval prior to engaging in any land disturbing activity on the proposed source other than material sampling that may be necessary. The Contractor's plan shall address the following: (See Standard Special Provisions)
a. Drainage:
The source shall be graded to drain such that no water will collect or stand and a functioning drainage system shall be provided. If drainage is not practical, and the source is to serve as a pond, the minimum average depth below the water table shall be 4 feet or the source graded so as to create wetlands as appropriate.
b. Slopes:
The source shall be dressed and shaped in a continuous manner to contours which are comparable to and blend in with the adjacent topography, but in no case will slopes steeper than 2:1 be permitted.
c. Erosion Control:
The plan shall address the temporary and permanent measures that the Contractor intends to employ during use of the source and as a part of the reclamation. The Contractor's plan shall provide for the use of staged permanent seeding and mulching on a continual basis while the source is in use and the immediate total reclamation of the source when no longer needed.
d. Where it is necessary to drain the borrow source, the Contractor shall perform this work in accordance with Section 240.
(D) Maintenance:
During construction and until final acceptance the Contractor shall use any methods approved by the Engineer which are necessary to maintain the work covered by this section so that the work will not contribute to excessive soil erosion.
(A) General
Borrow excavation will be measured by in place measurement in its original position as provided by Subarticle 2305(B) below, except that truck measurement as provided in Subarticle 2305(C) will be made where called for by the contract.
If the quantity of borrow excavation used is excessive as evidenced by the presence of surplus suitable material from the roadway excavation, the measured quantity of borrow excavation will be reduced by the quantity of such surplus suitable material.
The quantity of topsoil which is stockpiled and placed back on the source as a part of the reclamation effort will be measured in the stockpile by cross sectioning and computed by the average end area method. No in place measurement will be made of the topsoil.
(B) In Place Measurement:
The quantity of borrow excavation to be paid for will be the actual number of cubic yards of approved material, measured in its original position by cross sectioning and computed by the average end area method, which has been excavated from the borrow source and incorporated into the completed and accepted work. No measurement will be made of any overburden or unsuitable material removed from the source, nor of any material excavated prior to cross sections being taken.
(C) Truck Measurement:
The quantity of borrow excavation to be paid for will be the actual number of cubic yards of approved material, measured in trucks, which has been excavated from the borrow source and incorporated into the completed and accepted work. Each truck will be measured by the Engineer and shall be a legible identification mark indicating its capacity. Each truck shall be loaded to at least its measured capacity at the time it arrives at the point of delivery. The recorded capacity will be adjusted by making a 25 percent deduction to allow for shrinkage, and the adjusted capacity will be the quantity to be paid for.
The quantity of borrow excavation, measured as provided in Article 2305, will be paid for at the contract unit price per cubic yard for "Borrow Excavation".
The quantity of topsoil which is stockpiled and placed back on the source as a part of the reclamation effort and measured in accordance with Subarticle 2305(A) will be paid for at the contract unit price per cubic yard for "Borrow Excavation".
Where the borrow source has been furnished by the Department, payment for clearing and grubbing the source will be made as provided in Article 2007 and payment for draining the source will be made as provided in Article 2405. Where the borrow source has been furnished by the Contractor, no separate payment will be made for clearing and grubbing or draining the source as such work will be considered as incidental to the work covered by this section.
Payment for seeding and mulching and establishment of temporary erosion control for all borrow sources will be made at the contract unit prices for the items established in the contract as payment for the work of seeding and mulching.
The above prices and payments will be full compensation for all work covered by this section including, but not limited to, furnishing the source of the borrow; providing and implementing a development, use, and reclamation plan; building, maintaining, and obliterating haul roads; clearing and grubbing the borrow source; removal, stockpiling, and replacement of topsoil; removal and disposition of overburden and other unsuitable material; excavation; hauling; formation of roadway embankments, subgrades, and shoulders; breaking up pavement beneath embankment; restoration of the source and haul roads to an acceptable condition; seeding and mulching; and maintaining the work.
Payment will be made under:
Borrow Excavation Cubic Yard