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Section 780.211b) Continued. <br />• <br />The monitoring program is designed to determine the extent of any impacts to the <br />hydrologic resources in the Mine and Loadout areas. It is divided into two principle <br />components: ground water monitoring and surface water monitoring. <br />Ground water is monitored using the series of wells listed in Table 62, Kerr Mine Area <br />Monitor Well Inventory, and shown on Map 23-2, Water Monitoring Sites contained in <br />Exhibit 42, Drainage and Sediment Control Plan; Map 15a, Kerr Mine Area Ground <br />Water Hydrology; and Map 17a, Kerr Tipple Area Hydrology. Typical monitoring well <br />construction is shown in Figure 20, Kerr Monitor Well Design. Ground water <br />monitoring wells are divided into five separate categories: Bedrock water level wells; <br />bedrock water level/sample wells; alluvial water level wells; alluvial water level/sample <br />wells; and spoil water level/sample wells. <br />Water levels are measured in the bedrock water level wells once in the spring and once <br />in the fall of each year. Bedrock water level/sample wells are sampled at these times <br />and samples are analyzed for the constituents shown on Table 61, Kerr Mine Area <br />• Hydrologic Monitoring Schedule. Alluvial water levels are measured in the alluvial <br />water level wells both in the Kerr Mine and loadout areas on a monthly basis during <br />March through October. All alluvial water level/sample wells are sampled on a <br />quarterly basis except during the winter quarter, and samples are analyzed for the <br />parameters shown on Table 61, Kerr Mine Area Hydrologic Monitoring Schedule. Spoil <br />water levels are measured in the spoil water level/sample wells on a quarterly basis <br />and quarterly spoil water quality samples are obtained and analyzed for the parameters <br />shown on Table 61, Kerr Mine Area Hydrologic Monitoring Schedule. <br />Since mining has ceased and pits have been backfilled, and the majority of the mine <br />disturbance area regraded and revegetated, Kerr proposes to revise the current waxer <br />monitoring plan to reflect postmining conditions. The revised monitoring program <br />includes: <br />TR-19 780-108 Revised August 1999 <br />