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f~ neutralized by treating with hydrogen peroxide. In time, precipitation and fresh water makeup will dilute and/or replace this circulating volume approximately eight fold. Neutralization of pond solutions with hydrogen peroxide will continue throughout the entire rinse period. At the close of the rinse period, disposal of excess neutralized solution, meeting the neutralization standards set by the Division, will be accomplished principally by controlled discharge techniques, i.e. land application, within the project area. As seen on the water balance table, only relatively minor net evaporation losses can be realized in the final two to three months of rinsing, even with the use of a high efficiency application system (i.e. spray nozzles). Therefore, controlled discharge will be necessary to maintain control of the water balance and to dispose of all remaining water prior to reclamation. Appendix G, Water Balance Table revised for heap neutralization and Exhibit E, Section E.3.3 revised to include a discussion of final heap neutralization 2/15/89. 47. Please document how the evaporation volume required near shutdown can be accomplished in the two month time period as shown on the mode) output in Appendix G. Response: The table in Appendix G erroneously presented the gpm evaporation rates as acre-feet without the appropriate conversion applied. The table has since been revised. In order to provide a rinsing 1 scenario as addressed in the previous response, some type of controlled discharge will be required to provide the necessary depletion of excess water. The Water Balance Table in Appendix G revised 2/15/89. Section D.9 Diversions and Sediment Control and Drainage Crossings Section D.9.1 Diversions 48. In Appendix H, it is difficult to correlate the watersheds shown on Figure H-l with the watershed name used to identify each model run. I Please provide a summary table which correlates the ditch segment name, mode) run watershed name, watershed shown on Figure H-1 and peak flow. Response: A summary table has been added to Appendix H. In addition, Figure H.1 has been revised to include the accurate areas used in the WASHED runs. 1 Figure H.1 and Table H-1 added to Appendix H for clarification 2/15/89. 49. A71 of the hydraulic Lengths appear to be longer than expected. What estimation method was used to derive these parameter values? If these were underestimated, please provide revised peak flows as appropriate. Response: Hydraulic lengths and other detailed catchment information were