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GCC Rio Grande, Inc. -Red Rock Mine <br />Drought Management Plan <br />germination, establishment and growth of vegetation on reclamation areas. Brief <br />characterizations of these impacts by season are as follows: <br />Winter -Cold and dry combined with warm and dry can result in root and above ground <br />• desiccation resulting in winter -kill; <br />• Spring - Adequate moisture is received to initiate germination of cool - season plants, <br />followed by inadequate precipitation to support seedlings; <br />• Summer - Adequate moisture to initiate germination of warm- season plants followed by <br />inadequate precipitation to support seedlings or inadequate moisture to Support cool - <br />season (spring germination) seedlings; and <br />• Fall - Inadequate soil moisture to allow the ground to freeze "wet ". Dry freeze results in <br />plant winter -kill and seed desiccation. <br />Long -term drought may result in any or all of these adverse conditions depending upon its <br />the eater the potential <br />timing, duration and severity. The longer and more severe the drought, and limit plant growth, <br />impacts on revegetation efforts. While drought may retar germination mai stable due to the use of <br />newly reclaimed areas' at the Red Rock Mine are expected vegetation <br />reclamation practices and methods designed to ensure their stabili ty ve during g <br />nation, <br />establish ermi <br />establishment periods. This inherent stability will allow time for vegetation reclaimed plant <br />establishment, and development, and monitoring and evaluation of the <br />Three types of observations will be systematically made to assess the adequacy of revegetation <br />efforts and evaluate the stability of permanently reclaimed lands. These observati(ns include: <br />• Vegetation Monitoring - Both germination/establishment and interim vegetation <br />monitoring (see Permit) will be conducted to identify substandard seedling <br />germination and plant establishment/growth. <br />• Soil Moisture Content - Soil moisture in the 0" to 12" depth will be evaluated <br />prior to conducting seeding operations; and <br />Habitat Management, Inc. <br />2 <br />03 / 03 / 2003 <br />