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-~ - -- <br />CANON CITY DOLOMITE QUARRY <br />Study Area <br />The test plot at the Canon City Dolomite Quarry was established in <br />. the fall of 1976 on waste material from the mining of dolomite. The plot <br />elevation is 6,100 feet, and an annual average precipitation of <br />12.6 inches is received according to the Canon City meteorological <br />. records. Soil analyses performed on samples taken in July 1976 showed <br />gravel fragments greater than 2 mm accounting for 55 percent of the waste <br />material volume. The remaining 45 percent of the waste material was <br />. classified as a loamy sand in texture. The pH was 8.8, and the electrical <br />conductivity was 1.3 to 2.2 mmhos/cm. The organic matter content was <br />. 0.3 percent, and lime was determined to be low to medium. The total .soil <br />analysis is included in Appendix Table 1. <br />The Canon City Quarry is within the Pinyon-Juniper Woodland life <br />. zone. Pinyon pine (Pines edulis) and juniper (Juniperus scopulerum) <br />dominate the overstory. The herbaceous understory dominates are: blue <br />. grama (Bouteloua gracilis), sideoats grama (Bouteloua curtipendula), <br />Indian rice9rass (oryzopsis hymenoides), sand dropseed (Sporobolus <br />c_yptandrus}, and letterman needlegrass (Stipa Zettermcmnii). Rubber <br />rabbitbrush (Chrysothrnmzus nauseosus) and mountain mahogany (Cercoc~aus <br />spp.) are the most prevalent shrubs. <br /> <br />4 <br />