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2016-11-08_PERMIT FILE - M2016030
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2016-11-08_PERMIT FILE - M2016030
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Last modified
12/10/2020 4:33:09 PM
Creation date
11/10/2016 1:31:49 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2016030
IBM Index Class Name
PERMIT FILE
Doc Date
11/8/2016
Doc Name
Adequacy Review Response
From
Brannan Sand and Gravel Co. / Ready Mix
To
DRMS
Email Name
PSH
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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M-2016-030,Response to Adequacy Letter <br /> 8 November 2016 <br /> Page 5 of 10 <br /> 8. The Applicant states the Operator will utilize inert structural fill generated outside the approved <br /> permit area as backfill within the affected area. As required by Rule 3.1.5(9), please provide the <br /> Division with the following additional information at minimum: <br /> a. The approximate volume of inert material to be backfilled. <br /> The approximate total volume to be backfilled in the sand and gravel mining cells is an amount between one <br /> and four million cubic yards. The minimal fill volume (1.0 million CY) represents a volume composed <br /> exclusively of native (on-site) materials, including overburden from successive mining cells and borrow from <br /> the eastern portion of the affected area. This minimal volume is the amount necessary to reclaim the site to a <br /> vertical elevation at least two feet above the groundwater table. <br /> In accordance with Rule 3.1.5(9), no specific notice is required for this use of native clean structural fill. <br /> Because this minimal fill volume uses only native materials, no imported materials (only on-site equipment <br /> time) must be included in the reclamation bond. <br /> Beyond the minimal fill volume, the operator may import up to 3 million additional cubic yards of structural <br /> fill material. It is anticipated that this import activity will begin in Year 2 or Year 3 of operation (once the <br /> initial sand and gravel mining cell has been fully worked, and once on-site backfill activities are sufficiently <br /> advanced). The maximum fill volume—as well as any intermediate final fill volume, using lesser amounts of <br /> total import—results in an overlot condition suitable for industrial land, as described in the submitted M-2016- <br /> 030 Reclamation Plan. The Applicant understands the Division's adequacy questions in this item 8 to be <br /> directed at the fulfillment of Rule 3.1.5(9) notice requirements with respect to imported fill. <br /> b. A signed affidavit certifying that the material is clean and inert, as defined in Rule 1.1(20). <br /> With the commencement of import activities, the Operator will sign and provide to the Division an affidavit <br /> complying with Rule 3.1.5(9)(c). A sample of this affidavit is attached (see Attachment 4, "Generator's <br /> Environmental Media Profile Sheet"). <br /> c. A general engineering plan stating how the material will be placed and stabilized in a manner <br /> to avoid unacceptable settling and voids. <br /> The Operator will place material in lifts of approximately 2 to 10 feet in depth. Each lift will be compacted <br /> with heavy equipment, such as a dozer or other suitable machinery. Should slumping or sloughing be <br /> observed, the Operator will undertake geotechnical analysis to determine if this condition indicates the <br /> presence of unacceptable settling or voids. In the event of unacceptable settling or voids, the Operator will <br /> perform additional compaction or other remedial activities recommended as a result of geotechnical analysis. <br /> 9. The Applicant states the operator will assume for the purposes of initial reclamation planning and the <br /> initial reclamation bond that one-quarter of affected land must ultimately be covered by an average of <br /> 6 inches of topsoil. As required by Rule 6.4.5(2)(b), in those instances where the post-mining use is for <br /> industrial or commercial purposes and such use is not reasonably assured, a plan for revegetation shall <br /> be submitted. Please revise the Reclamation Plan to indicate all affected land will be topsoiled with a <br /> minimum of six(6)inches of topsoil and revegetated with the reclamation seed mixture. <br /> Rule 6.4.5(2)(b) does not specify what constitutes reasonable assurance that land will be converted to <br /> commercial or industrial post-mining use. It is assumed that land use plans and zoning status may provide <br />
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