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COMPLIANCE WITH RECLAMATION STANDARDS (6.4.5.(2)c.)
<br />In demonstration of compliance with state standards (Rule 3.1), the following information is provided. Please refer to
<br />maps in Exhibit F.
<br />Gradinq (3.1.5(1)) and Backfilling (3.1.5(2))
<br />Most mining faces will be a vertical slope; with soil stripped approximately 10 feet to the rear of the face.
<br />Excess fines may also be stored in stockpiles on the final floor of the pit, until placed in final reclamation areas
<br />for backfill. All backfill will be placed as engineered fill and compacted to approximately 75% Proctor density or
<br />better, as field- determined. Exterior (perimeter) faces of pits will be mined at a taper, backfilled, or left
<br />sufficiently distant from the permit boundary or buffer zone boundary to cut and fill to a 1 V:2H slope or flatter,
<br />OR where adjacent natural slopes are steeper than 1 V:2H, to match adjacent slopes within 20% + / -. There are
<br />some areas, which will be left at a permanent steeper slope of 1 V:1 H or vertical, based on rock conditions as
<br />evaluated by an engineer at the time of mining, and stabilized as necessary. This includes cuts for the existing
<br />trail climbing the cliff from the river to the bench being mined, and converted to a permanent road. Slope widths
<br />and heights will vary from area to area based on total depth of mining accomplished. All final slopes of 1 V:2H
<br />or flatter will be covered with stockpiled soil. See cross - sections in Exhibit F.
<br />Grading to control erosion, siltation and prevent damage (3.1.5(3))
<br />Grading will be done so that erosion and sediment is controlled on affected lands and so that there is no
<br />damage to areas outside the effected land. All highwalls (mining faces) will be eliminated except as noted
<br />above. Where highwalls of 1 V:1 H or steeper (vertical) are left, temporary and permanent storm water
<br />management and erosion control features will be used on the uphill side as part of stabilization and reclamation.
<br />All slopes greater than 2:1 will be located at least 50 feet from all exterior property boundaries and a horizontal
<br />distance equal to or greater than the height of the cut slope and any natural change in elevation between the
<br />back of the cut slope and the permit boundary, to prevent off - property damage due to slope failure, and to
<br />prevent potential slides or other damage on affected lands or outside the permit boundary. No mining,
<br />disturbance, or reclamation is planned within delineated floodplains. No surface discharge is planned; if surface
<br />discharge of water is necessary, detention basins, outfall armoring, and other techniques will be employed to
<br />prevent discharge of sediment and siltation off -site.
<br />Performance as soon as feasible (3.1.5(4))
<br />Some areas, such as those involved in the replacement/improvement of the San Juan access road and any field
<br />drainage performed prior to mining, will be reclaimed immediately upon completion of work. However, for most
<br />of the affected area, the time between initial disturbance and final reclamation will be approximately one -two
<br />years. Because of the size and the post - reclamation uses, the time to meet reclamation standards will vary.
<br />Backfilling, grading, and placement of soil should be accomplished within one year of completion of extraction of
<br />construction materials, with seeding to follow as soon as possible based on recommendations, seasons, and
<br />weather conditions (See Exhibit J).
<br />Refuse and acid - forming or toxic producing materials (3.1.5(5))
<br />There is no reason to believe that toxic or acid - forming, or toxic producing materials are found or will be brought
<br />on site. Therefore no special action is necessary to prevent leaching, protect the drainage system, or prevent
<br />unauthorized release of pollutants to surface water or groundwater, beyond that necessary for erosion control
<br />and prevention and control of spills and leaks from vehicles and equipment. Fines will be almost immediately
<br />moved to final locations for final reclamation surfaces and slopes. Normal municipal solid waste generated
<br />during operations will be hauled off -site for disposal, and will not be buried or burned on -site. There may be
<br />some use of various wastes, including wood waste (sawdust, bark, similar materials) for reclamation, to provide
<br />mulches, sediment control, and for other purposes. Clean construction debris (such as materials from clearing
<br />and grubbing, asphatic cement concrete rubble, Portland cement concrete rubble, and excavated soil and rock)
<br />may be used for backfill and related use on site for reclamation and road construction /maintenance, as provided
<br />by haulers, and in accordance with CDRMS requirements for verification of nature and condition.
<br />C &J Gravel Products, Inc. Page 21 01 JAN 2015
<br />Application for Permit: Two Rivers Pit M -2015- C &J- TRP -V5 -001
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