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' <br />4) The values for mean annual evaporation in the region were not <br />researched for this RWD. Evaporation in itself is not considered <br />to be a major design factor for the site since no surface <br />impoundments exist or are proposed for the site. <br />0� However, while preparing the Closure Plan for the site EMCON <br />Associates performed a water balance calculation for the site. This <br />== computation was performed using methods developed by C. W. <br />Thornthwaite for the U.S. Environmental Protection Agency (EPA), and <br />is contained in the Section titled "Leachate Control" of the Closure <br />0� Plan (Appendix 9). <br />m� <br />5) The Closure Plan for the site includes design of drainage <br />facilities for the site. The drainage calculations for design of <br />N� <br />all drainage ditches and structures used precipitation values for <br />the 100 year storm. A section titled "Drainage Control" of the <br />m� Closure Plan, describes the drainage plan for the site. The drainage <br />calculations used for design, which were performed by EMCON <br />Associates, are not included in the Closure Plan but are available <br />N� upon request from the Ban Joaquin County, Department of Public Works. <br />6) The estimated wind rose for the site is shown as Figure 7. This <br />wind rose was developed by EMCON Associates using wind speed and <br />�� 11 <br />