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<br /> STATE MINING AND GEOLOGY BOARD
<br /> RECLAMATION REGULATIONS
<br /> Article 1. Surface Mining and Reclamation Practice
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<br /> i § 3500. Purpose. It is the purpose of this subchapter Surface Mining Operations. In addition to the
<br /> to establish state policy for the reclamation of mined provisions of Section 2735 of the Act, borrow pitting,
<br /> lands and the conduct of surface mining operations in streambed skimming,segregation and stockpiling of mined
<br /> t accord with the general provisions set forth in Public materials(and recovery of same) are deemed to be surface
<br /> Resources Code, Division 2, Chapter 9, Section 2710 et mining operations unless specifically excluded under
<br /> seq. (Surface Mining and Reclamation Act of 1975, as Section 2714 of the Act or Section 3505 of these
<br /> amended by Statutes of 1980). regulations.
<br /> Note: Authority cited: Section 2755, Public Resources Temporarily Deactivated Operation. A surface mine
<br /> i Code. Reference: Sections 2710-2795, Public Resources that has been closed down and that the operator has
<br /> Code. maintained in the expectation of reopening it when the
<br /> § 3501. Definitions. The following definitions as used conditions justify.
<br />{ ; herein shall govern the interpretation of these regulations: Topsoil. The upper part of the soil profile that is
<br /> ' Angle of Repose. The maximum angle of slope relatively rich in humus, which is technically known as the
<br /> (measured from horizontal plane) at which loose A-horizon of the soil profile.
<br /> a cohesionless material will come to rest on a pile of similar NOTE: Authority cited: Section 2755, Public Resources
<br /> material. Code. Reference: Sections 2726-2735, Public Resources
<br /> Backfill. Earth, overburden, mine waste or imported Code.
<br /> f, material used to replace material removed during mining. §.3502. The Reclamation Plan.
<br /> Borrow Pits. Excavations created by the surface (a) Objectives. Reclamation plans shall be developed
<br /> t mining of rock, unconsolidated geologic deposits or soil to to attain the objectives of Public Resources Code Section
<br /> provide material (borrow) for fill elsewhere. 2712(a)-(c)•
<br /> r Critical Gradient. The maximum stable inclination of (b) Reclamation Plan Elements. In addition to the
<br /> F an unsupported slope under the most adverse conditions information required by Public Resources Code Section
<br /> that it will likely experience, as determined by current 2772, the following elements shall be included in the
<br /> engineering technology. reclamation plan:
<br /> Excavations for On-Site Construction. Earth material (1)The environmental setting of the site of operations
<br /> moving activities that are required to prepare a site for and the effect that possible alternate reclaimed site
<br /> I construction of structures, landscaping, or other land conditions may have upon the existing and future uses of
<br /> improvements (such as excavation, grading, compaction, surrounding lands.
<br /> ,. and the creation of fills and embankments), or that in and (2) The public health and safety, giving consideration
<br /> of themselves constitute engineered works(such as dams, to the degree and type of present and probable future
<br /> road cuts, fills, and catchment basins). exposure of the public to the site.
<br />' Gradin To bring an existing surface to a designed� 9� !3 9 9 131 The designed steepness and proposed treatment
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<br /> form by cutting, filling, and/or smoothing operations. of the mined lands' final slopes shall take into
<br /> Minerals.Any naturally occurring chemical element or consideration the physical properties of the slope material,.
<br /> compound,or groups of elements and compounds,formed its probable maximum water content, landscaping
<br /> from inorganic processes and organic substances, requirements, and other factors. In all cases, reclamation
<br /> including, but not limited to, coal, peat, and bituminous plans shall specify slope angles flatter than the critical
<br /> rock,but excluding geothermal resources,natural gas,and gradient for the type of material involved. Whenever final
<br /> . petroleum. slopes approach the critical gradient for the type of
<br /> 11 Person.Any individual, firm, association, corporation, material involved, regulatory agencies shall require an
<br /> organization, or partnership, or any city, county, district, engineering analysis of the slope stability. Special
<br /> or the state or any department or agency thereof. emphasis on slope stability and design shall be necessary
<br /> t+ Reclamation Plan. The applicant's (operator's) completed when public safety or adjacent property may be affected.
<br /> and approved plan for reclaiming the lands affected by his (4) Areas mined to produce additional materials for
<br /> surface mining operations conducted after January 1, backfilling and grading, as well as settlement of filled
<br /> 1976, as called for in Section 2772 of the Act. areas, shall be considered in the reclamation plan. Where
<br /> Resoiling. The process of artificially building or ultimate site uses include roads, building sites, or other
<br /> reconstructing a soil profile. improvements sensitive to settlement, the reclamation
<br /> Stream Bed Skimming. Excavation of sand and gravel plans shall include compaction of the fill materials in
<br /> from stream bed deposits above the mean summer water conformance with good engineering practice.
<br /> level or stream bottom, whichever is higher. (5) Disposition of old equipment.
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