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Collection: Directories and Documents
Mineral Land Classification of Nevada County, California (1990) (235 pages)
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Page: of 235
Major findings of this study relative to the life expectancy of
construction aggregate reserves in Nevada County are:
The population in Nevada County is unevenly distributed
with approximately 89 percent of the population located
in the western part of the county and 11 percent in the
eastern part of the county. The population in Nevada
County is projected to more than double by the year
2020 (Nevada County, 1987).
Due to the uneven distribution of the population of
Nevada County and the cost of transporting aggregate,
two separate aggregate markets exist one in the west
and one in the east.
Nevada County is a net importer of construction
aggregate and imports 20 percent to 30 percent more
aggregate than is produced within the county.
Aggregate is imported into the western part of the
county from Yuba and Placer counties and into the
eastern part of the county from the state of Nevada.
There are currently six permitted aggregate mining
operations within Nevada County with combined reserves
of 28,560,000 tons. A seventh aggregate mining
operation on the border of Nevada and Placer counties
reports its production in Placer County and is
considered to be in Placer County for the purposes of
this report. More than one-half of the reserves are
located in the eastern part of the county and less than
one-half in the western part of the county.
If the population of Nevada County increases as
projected, the rate of aggregate production within the
county, as well as the amount of aggregate imported
into the county, can be expected to increase to meet
the increased demands of the growing population.
The currently permitted reserves of construction
aggregate in western Nevada County are likely to be
depleted by the year 2004, 14 years from the time of
this study. The expected longevity of these reserves
is based on the assumption that mining will continue to
be permitted until the reserves are depleted, and does
not accommodate aggregate replenishment at instream
mine sites. Replenishment levels are currently unknown
and cannot be determined without data collection, which
is beyond the scope of this study.
xiv