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1998-06-19_GENERAL DOCUMENTS - C1981017
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1998-06-19_GENERAL DOCUMENTS - C1981017
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Last modified
3/9/2021 8:01:07 PM
Creation date
6/13/2012 10:39:53 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
GENERAL DOCUMENTS
Doc Date
6/19/1998
Doc Name
Bid Documents (IMP) PKA 8-417
Permit Index Doc Type
General Correspondence
Media Type
D
Archive
No
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DRMS Re-OCR
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Signifies Re-OCR Process Performed
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initiated without such approval. If such fill operations begin prior to receiving such <br /> approval, the PROJECT MANAGER may direct that the CONTRACTOR, at his <br /> /her expense, will remove the fill material until the sub soil surface is encountered. <br /> (2) During fill operations, coal refuse materials used as fill will be placed in <br /> horizontal lifts no greater than twelve inches (12") in thickness. <br /> (3) Each lift will be thoroughly compacted by a non-vibrating sheeps foot roller prior <br /> to beginning placement of the succeeding layer. Optimal compaction of the <br /> material is ninety percent (90%) of maximum dry density. <br /> (4) In order to achieve the optimal dry density during compaction, it may be <br /> necessary to add water to refuse which appears dry during lift construction. <br /> (5) In no instance shall the outslope formed during construction of fills be steeper <br /> than 2.5H:1 V. <br /> (6) Dependent upon conditions, it may be necessary to construct one or more <br /> underdrains at fill areas near the base of the Old Refuse Pile. The purpose of the <br /> drains is to allow ground water which may be present at the fill area(s) to drain <br /> from the fill without saturating the coal refuse material. A typical drain dimension <br /> is shown in Figure 1, Typical Underdrain. Note that the drain length is variable, <br /> and that cross sectional area may also vary based upon site conditions. The <br /> PROJECT MANAGER will make a determination whether to construct an <br /> underdrain prior to the CONTRACTOR initiating fill operations. Underdrains, if <br /> constructed, will be built to the specifications described in Task 7, Underdrains. <br /> These features will be paid per the price bid in Item 7 of the Bid Schedule per <br /> lineal foot installed. <br /> Disposal Area Construction <br /> It is estimated that 40,000 cubic yards of coal refuse material will be excavated from the Old <br /> Refuse Pile and transported to the designated disposal area. The disposal area is located <br /> approximately 1,500 feet west of the central portion of the Old Refuse Pile near the former <br /> location of the Wash Plant(Map 3, Project Area). <br /> Under a separate contract scheduled to be completed prior to initiation of the Huntsmar) Project, <br /> demolished concrete rubble and debris will be stockpiled against the hill behind the former <br /> location of the Wash Plant. The CONTRACTOR shall dispose of the coal refuse excavated from <br /> the Old Refuse Pile on top of the demolished concrete located at the concrete disposal area in a <br /> manner so that the concrete rubble throughout the disposal area is evenly covered by the refuse <br /> to a uniform thickness. <br /> The demolition contractor, under separate contract, is required to construct the rubble disposal <br /> area to the following specifications: <br /> The rubble will be placed against the hillside behind the wash plant to a height not to <br /> exceed twenty feet(20) above ground level. Rubble will be packed as tightly as possible <br /> to minimize voids within the material. The top of the rubble is to be level, with no single <br /> piece of rubble or debris exceeding a height of eighteen inches (18'9 above the mean <br /> elevation of the surrounding material. Upon completion of the demolition/disposal <br /> 9 <br />
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