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<br />' 3.0 Potential Salt Management Alternatives <br />' After assessing the characteristics of the mine water discharges and existing facility conditions, <br />t various alternatives were identified and evaluated for their potential applicability for manage- <br />ment of salt in the discharges. Characteristics of these alternatives were compiled and <br />' evaluated to screen out nonapplicable alternatives based on effectiveness, implementability, and <br />cost. Alternatives that were inapplicable to the facility and its operations were eliminated fmm <br />' further consideration (refer to Chapter 4.0). <br />3.1 Preliminary Alternative Identification <br />Following initial assessment of the salt discharges, a variety of management alternatives were <br />identified for preliminary screening to determine which alternatives could effectively address <br />management of salt (TDS) in the mine water discharges. Numerous physical/chemical <br />processes are available which are potentially applicable to the process-specific conditions. The <br />' management alternatives selected by Earth Sciences for initial screening were considered to <br />be generally consistent with current state and federal regulations and PCC's expectations. <br />The management alternatives tentatively identified by Earth Sciences for the initial screening <br />' were based on our review of available facility information, discussions with PCC personnel, <br />review of relevant technical literature, and Earth Sciences' experience at similar facilities. The <br />' preliminary technology review produced a list of management alternatives that was potentially <br />applicable to the mine water discharges. Management alternatives selected for the initial <br />' screening, as discussed in subsequent sections of this report, were categorized into the <br />following three groups: <br />' Off-Site Management <br />• On-Site Management with Direct Discharge <br />' On-Site Management without Direct Discharge <br />' In some instances, several process options maybe available for a specific management alterna- <br />tive. In general, one representative process option was evaluated because variations within a <br />' given alternative typically have less impact on the overall effectiveness and coat than <br />differences between alternatives. If process options for an applicable management alternative <br />' were sufficiently different, the applicable process options were selected for screening. <br />