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' 3-2 <br />3.2 Off-Site Management <br />' The salt-containing mine waters can potentially be managed at an approved off-site facility <br />which would involve removal and transportation of these waters with subsequent treatment <br />' and disposal at a permitted facility, To be an acceptable alternative, on-site storage, <br />transportation, and off-site treatment/disposal must be carried out in accordance with <br />applicable federal, state, and local regulations. <br />' The advantage of this management alternative category is its relative ease of implementatio^ <br />due to utilization of existing off-site treatment/diepoael facilities that is designed for these <br />types of waters. Major disadvantages of off-site management are the high costs of <br />transportation, treatment and/or disposal, and potential future environmental liabilities <br />associated with utilization of the selected off-site management facility. <br />3.3 On-Site Management With Direct Discharge <br />' On-site management with direct discharge of the salt-containing mine waters would involve <br />additional treatment of the mine waters and discharge of treated effluent under the facility's <br />' CDPS permit. This option category would require installation of water treatment equipment <br />for the removal of TDS and amending PCC's current CDPS permit. <br />' The advantages of this management alternative category include on-site water management <br />' under PCC's control and consequent control of potential future liabilities associated with off- <br />site management of the mine discharge. Major disadvantages of on-site management include <br />' amending the facility's current CDPS, and capital and operating costs associated with <br />constructing a reliable water treatment system. Additionally, the water treatment system <br />' would require constant operator involvement to ensure that permit limitations for TDS are <br />achieved. <br />' 3.4 On-Site Management Without Direct Discharge <br />' On-site management without direct discharge of the mine waters wou]d involve either <br />evaporation (natural or assisted) or limited additional treatment of the discharges and injection <br />to a groundwater aquifer. This option category may require installation of equipment for <br />evaporating the mine water and removing the resultant solids or the installation of treatment <br /> <br /> <br />