Borrow
This item shall govern required excavation, removal and proper utilization of materials secured from sources, selected by the Contractor and approved by the Engineer or designated representative.
Borrow will be used only when indicated on the Drawings or directed by the Engineer or designated representative and shall only be acquired from approved sources.
130.2 Submittals
The submittal requirements of this specification item may include:
A. Identification of Class, source and characteristics (P.I., linear shrinkage, etc.) of proposed borrow material, and
B. A plan for managing and maintaining borrow sites.
130.3 Materials
All authorized borrow shall conform to one of the following classes:
Class A (Select Borrow)
Class A Borrow material shall consist of suitable granular material, free from vegetation or other objectionable matter and reasonably free from lumps of earth. When tested by standard TxDOT laboratory methods Tex-105-E, Tex-106-E and Tex-107-E, the Class A Select Borrow, shall meet the following requirements:
|
The Liquid Limit shall not exceed |
45 |
|
The Plasticity Index shall not exceed |
15 |
|
The bar linear shrinkage shall not be less than |
2 |
Class B (Borrow)
Class B Borrow material shall consist of suitable non swelling [i.e. soils with a plasticity index (P.I.) less than 20] earth material such as loam, clay or other such materials that will form a stable embankment.
Class C (Topsoil)
Class C Borrow material shall consist of approved soils, which shall be clean, friable and capable of supporting plant life. This material shall also be free of stones and all other debris.
Prior to commencing this work, all required erosion control and environmental measures shall be in place. All suitable materials removed from excavations shall be used, insofar as practicable in the formation of embankments, as indicated on the Drawings or as directed by the Engineer or designated representative. The completed work shall conform to the established alignment, grades and cross section as shown on the Drawings. The additional material necessary to complete the work described above shall be "Borrow" of the class specified.
The Contractor shall arrange for borrow from one of the following sources:
1. Existing borrow pit,
2. New borrow pit, or
3. Surplus excavated material from a site, with a site development permit.
The Contractor shall notify the Engineer 3 weeks prior to opening a pit or any other borrow source to allow necessary testing for approval of materials. All borrow sites shall comply with the requirements of the site development permit.
During construction, borrow sources shall be kept drained to permit final cross sections to be measured, when required.
Borrow sites shall be managed and maintained to minimize the impact of the appearance of the natural topographic features and at no time create a potential hazard to the public.
Borrow will be measured by the cubic yard in its final position based upon the average end areas, calculated from pre-construction cross sections and plan grades. The plan quantities for Borrow or Topsoil will be used as the measurement for payment for this item.
All work performed by this item will be considered subsidiary to other bid items unless it is included as a separate bid item in the contract documents then all work performed as required herein and measured as provided under "Measurement" will be paid for at the unit bid price. The bid prices shall include full compensation for furnishing all labor; all materials; all royalty and freight involved; all hauling and delivering; and all tools, equipment and incidentals necessary to complete the work. Payment will not be made for unauthorized work
End