TWIN KNOLLS MINING DISTRICT W ATTACHMENTS 1-27-21.PDF

Maricopa County — Formal (2021-01-27)

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Maricopa County
Planning & Development Department
501 N. 44th St. # 200 Date: January 27, 2021 (Continued from August 19, 2020)
Phoenix, AZ 85008
Phone: (602) 506-7139 To: Maricopa County Board of Supervisors
Fax: (602) 506-3711 From: Darren V. Gerard, AICP
www.maricopa.gov/planning
Re.: Maricopa County Aggregate Mining Operations Zoning District #2
The proposed Maricopa County Aggregate Mining Operations Zoning District
#2 (a.k.a. Twin Knolls Aggregate Mining Operations Zoning District) is located
on Twin Knolls along the north side of Apache Trail in the east Mesa area of
Supervisor District 2. As proposed it will encompass an area bounded by the
Boise St. alignment on the north, 85th Pl. on the east, Apache Trail on the south,
and 81st St. on the west.
The Board will subsequently appoint a Maricopa County Aggregate Mining
Operations Zoning District #2 Recommendation Committee. It will be
comprised of an equal number up to seven each of mining industry
representatives (from active operations within the district or from within any

Maricopa County January 27, 2021
Planning & Development Twin Knolls
Department
Page 2
other district in the county) and private citizens not affiliated with the mining
industry who reside within a three-mile radius of the district boundary. The
committee will serve as a mediation body between members of the public
and mining operators, recommend administrative regulations for adoption by
the Board, and hear complaints filed with and make recommendations to the
State Mine Inspector’s Office.
Attachments: Map of the proposed Mining District
A.R.S. § 11-812 (3 pages)
Geologic Map Compilation for Aggregate Resource Assessment in the Phoenix
Metropolitan Area 2015 *
Custom Landscape AZ State Mine Inspector Form (1 page)
Custom Landscape Materials AZ State Mine Inspector Verification of Start-Up (5
pages)
*
http://repository.azgs.az.gov/sites/default/files/dlio/files/nid1640/phoenixareaaggregate_di-
43_simplifiedbedrock_jpc_layout_2016_optimized.pdf