California Code of Regulations
Title 14 - Natural Resources
Division 2 - Department of Conservation
Chapter 8 - Mining and Geology
Subchapter 1 - State Mining and Geology Board
Article 2 - Areas Designated to be of Regional Significance
Section 3550.14 - Construction Aggregate Resources, Stockton-Lodi Production-Construction Region

The designated resource areas, and resource areas being terminated, is shown on Plate 1, Updated Mineral Land Classification Map for Portland Cement Concrete-Grade Aggregate in the Stockton-Lodi Production Consumption (P-C) Region, San Joaquin and Stanislaus Counties, California (2015), and is incorporated by reference into this regulation. This map is available from the State Mining and Geology Board's office in Sacramento.

The construction aggregate deposits in the following areas are designated as being of regional significance:

Sector A-Aggregate deposits on the alluvial fan created by Corral Hollow Creek, situated south of the City of Tracy.

Sector B-Aggregate deposit on the alluvial fan created by Lone Tree Creek. Deposit extends from just west of Interstate 580 near the base of the Coast Range hills northwest to the alignment of Interstate 5.

Sector C-Aggregate deposit that consists of the alluvial fan formed by Hospital Creek. Deposit extends from west of Interstate 580 within the foothills of the Coast Range and east into the San Joaquin Valley.

Sector D-Sand deposit centered on the San Joaquin River near the intersection of Highway 120 and Interstate 5 west of the City of Manteca.

Candidate Sector E (Subsectors E-1 through E-10) -- This Sector is located southwest of the town of Vernalis, to the west of Welty Road and east of Interstate 580. It is adjacent to Sector B on the northwest and Sector C to the south. A portion of Subsector E-10 extends into Stanislaus County.

Candidate Sector F (Subsectors F-1 through F-10) -- This Sector is located west of the town of Vernalis and is traversed by Bird Road, Highway 132 and Interstate 580. It is adjacent to Sector B on the east. Subsectors F-1 through F-10 total 927 acres and cover an area west of the Lone Tree Creek Alluvial Fan.

Candidate Sectors G (Subsectors G-1 and G-2) -- This Sector is located southwest of the City of Lathrop and is southeast of Interstate 205/5 and northeast of Paradise Cut. It is adjacent to Sector D to the northeast.

All or parts of eight Sectors are identified for termination of designation status because of depletion due to mining or development of incompatible land uses. These areas are indicated on the accompanying Plate, and as follows:

Sector A-1: There are twelve subsectors totaling 462 acres that have been depleted by mining (A-1b, A-1c, A-1d, A-1f, A-1h, A-1i, A-1j, A-1k, A-1n, A-1o, A-1p and A-1q).

Sector A-2: There are seventeen subsectors totaling 1,424 acres that have been depleted partially or completely by mining or now have land uses incompatible with mining. Subsectors A-2a, A-2b, A-2c, A-2h, and A-2i covering 677 acres containing 132,579,000 tons of PCC-grade aggregate resources have been lost to urbanization. Subsectors A-2i, A-2n, A-2p, A-2q, A-2r, A-2s, A-2t, A-2u, A-2v, A-2w, A-2y, and A-2z covering 747 acres have been depleted by mining.

Sector A-3: There are three subsectors totaling 140 acres that have been depleted by mining (A-3a, A-3b, and A-3c).

Sector A-4: There are two subsectors totaling 55 acres that have been depleted by mining (A-4a and A-4b).

Sector D-9: 197 acres of Sector D-9 have been depleted by mining.

Sector D-10: 9 acres of Sector D-10 have been depleted by mining.

Sector D-11: 51 acres of Sector D-11 have been depleted by mining.

Sector D-12: 10 acres of Sector D-12 have been depleted by mining.

Note: Authority cited: Sections 2790 and 2793, Public Resources Code. Reference: Sections 2761, 2762, 2763, 2790, 2791 and 2792, Public Resources Code.

Note: Authority cited: Sections 2790 and 2793, Public Resources Code. Reference: Sections 2761, 2762, 2763, 2790, 2791 and 2792, Public Resources Code.