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Mineral Resource Zones <br /> ■ The California Department of , 3z \ 33 <br /> Conservation has concluded that the �. <br /> material found in the MRZ-2 portions <br /> of the project area meet California's <br /> standard for use in Portland Cement t MRZ <br /> LI <br /> Concrete ("PCC"). <br /> • PCC aggregate deposits constitute <br /> California's scarcest and most <br /> valuable aggregate resources. <br /> • Approximately 58% of the site is <br /> classified MRZ-2. too . RZ_ <br /> • Another 30% of the site is classified / <br /> a <br /> MRZ-3, and contains potential PCC- t" <br /> grade aggregate. x <br /> (Sources: DOC Special Report 160, Mineral Land Classification of Portland Cement Concrete Aggregate in the <br /> Stockton-Lodi Production Consumption Region (1988); DOC Open File Report 91-03, Mineral Land Classification <br /> of the South Tracy Site (1991); DOC, Aggregate Availability in California, December 2006.) <br />