Laserfiche WebLink
Mr. Dick Wolfe, P.E. <br />Mr. Steve Witte, P.E. <br />Mr. Bill Tyner, P.E. <br />February 17, 2015 <br />Page 2 of 4 <br />comments regarding the accounting, which are due today, the revised accounting will replace <br />the return flow accounting provisions with target deliveries based on the attached "pay as you <br />go" analysis. <br />The "pay as you go" analysis recommended by Tri-State and required pursuant to <br />term No. 31 consists of a the results of a series of AWAS runs (attached as four AWAS files) <br />based on farm deep percolation estimated per the revised LFT submitted on February 14, <br />2015, and the URFs accompanying said submittal. Attached Tables 1 through 4 demonstrate <br />that the 10- acre -feet per month limit is met for Augmentation Station/Schweizer Recharge <br />Pond/Hanagan Recharge Pond deep percolation delivery. This requirement is met with the <br />percentage split of 20/40/40 to those locations, which we understand is the split that was <br />anticipated by Tri- State. <br />In addition, if percentage splits for deliveries to those locations are made 20/25/55, <br />10/25/65 and 10140150, the 10 acre -feet per month limit for deep percolation deliveries is also <br />met. These various percentage splits define the ranges described below in Figure 1. The <br />results of the AWAS runs illustrates that, based on average historical farm headgate <br />deliveries, for the below illustrated range of deliveries to the augmentations stations and the <br />recharge ponds the difference in deep percolation return flow timing would not exceed ten <br />acre -feet in any month. The revised accounting we anticipate preparing will utilize a target <br />value within the ranges for each structure to which Catlin Pilot Project water is delivered. As <br />a result, so long as the actual delivery range is within the below stated ranges deep percolation <br />return flows will be considered to have been replaced in accordance with the pay as you go <br />approach. <br />Figure 1 <br />Percent of Deep Percolation Deliveries <br />10% to 20% <br />Augmentation <br />Stations <br />100% <br />Sum of <br />Deliveries <br />25% to 40% 40% to 65% <br />Schweizer Hanagan <br />Recharge Recharge <br />Pond Pond <br />Martin and Wood Water Consultants, Inc. <br />