SECTION 205 — BORROW EXCAVATION

205.1 DESCRIPTION — This work is excavation or obtaining embankment material from borrow areas acquired in accordance with Section 105.14 or from other sources for construction of embankments or backfills.
Borrow excavation includes Common Borrow Excavation, Foreign Borrow Excavation, and Selected Borrow Excavation, described as follows:

(a) Common Borrow Excavation. Excavation of satisfactory material from borrow areas, that can be measured before and after excavation. Common Borrow Excavation also includes the removal of topsoil from borrow areas and stockpiling, as specified in Section 801.

(b) Foreign Borrow Excavation. Excavation or obtaining satisfactory material, from sources outside the limits of the project, that cannot be measured before and after excavation.

(c) Selected Borrow Excavation. Excavation or obtaining material used in specific items of work and designated by quality, size, and/or gradation, obtained from sources outside the limits of the project, that cannot be measured before and after excavation.


205.3 CONSTRUCTION —

(a) General. When project excavation is insufficient to complete the embankments or backfills, or does not meet the physical requirements, obtain material to complete the work.
Do not use material from borrow excavation until all suitable and available project excavation is used, unless otherwise directed.
If satisfactory material is available on the project, the Engineer may, upon request, authorize in writing widening areas adjacent to slopes to obtain a portion or all of the excavation in place of borrow, as shown on the Standard Drawings.
For convenience, suitable excavated material may be wasted and replaced with common borrow. However, do so only after obtaining written authorization of the District Engineer and making satisfactory arrangements for obtaining cross sections of borrow and waste areas and the satisfactory disposal of the waste material.
Haul material from borrow excavation of other sources for placement in embankment or for backfill.
Restore borrow areas, as specified in Section 105.14.

(b) Common Borrow Areas. When common borrow areas are required, obtain from areas, as specified in Section 105.14. Clear and grub the borrow site, as specified in Section 201, and remove topsoil. Before removing any suitable material, notify the Engineer in sufficient time to sample, test, and take cross sections.

(c) Foreign and/or Selected Borrow Excavation. When foreign or selected borrow excavation is required, do not begin operations until the material and placement sequence is accepted in writing and an Erosion and Sediment Pollution Control Plan is accepted by the County Conservation District and/or the Department of Environmental Resources and the Engineer, as applicable.


205.4 MEASUREMENT AND PAYMENT —

(a) Common Borrow Excavation. Cubic Yard
Measured, as specified in Section 203.4(a)2, based on cross sections of the borrow area. Payment will not be made for material removed before measurements are made.
Additional material obtained within project limits, as specified in Section 205.3(a), in place of borrow excavation, will be measured and paid for, as specified in the preceding paragraph. However, payment will be at the lower contract unit price for either Class 1 Excavation or Borrow Excavation of the type indicated.
Stone fences, piles of dirt or stone, and individual surface boulders will be included in the total borrow computations.
Payment will not be made for common borrow required to replace suitable excavated material wasted for contractor's convenience, error, or oversight.

(b) Foreign Borrow Excavation. Cubic Yard
Measured as compacted material in completed embankments.

(c) Selected Borrow Excavation. For the type indicated, and as follows:

1. Volume Basis. Cubic Yard.
Measured in place as compacted material, using the average end-area method.

2. Weight Basis. Ton.

No Supplement

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