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8/22/2016 State.co.us Executive Branch Mail - Fwd: FW: FW: FW: LorencitoTR-19 Adequacy Letter Response <br />P3Q3.866.3567'extension 8i13 | F3D3.832.D1Q8 <br />On Sun, Jul 17, 2016at3:15PM, Ron Thompson <nonthompoon@nevmelkcoaioom> wrote: <br />Rob; <br />Note that the ponds were constructed and as -built certified 10the original design specifications; with the <br />revisions for PIVI Revegetation, the ponds now have excess storage capacity for sediment storage. This was all <br />discussed with Janet Binns and Leigh Simmons and they agreed that this could be a reasonable approach and <br />avoid a lot of potential disturbance do to unnecessarily clean-out these ponds. <br />Ron <br />From: Kobitz, Jerry [nlaiknJerry.KoblKz@arcadis.conn <br />Sent: Sunday, July 17, 2016 2:15 PM <br />To: rob.zuber@stat8.cO.use <br />Cc: Ron Thompson; Knbitz,]erq/; |heod@nemxekcoaicmm <br />Subject: FW: FW: Lorencito TR -19 Adequacy Letter Response <br />The dramatic changes listed below are sediment volumes, instead of design pond volumes. The attached file <br />of "UpdatedDesignVolumeRevised-072016.pdf" shows the changes of sediment volume, elevation and pond <br />volume. <br />Also, the attached memo 3 years ago explain the changes mainly due to the CP values (0.71 vs 0.06) and <br />curve numbers (94 vs 86), disturbed vs revegetated. <br />Jerry KoUl�itz I Senior Vice President I �eirirylkobli�z@airca6S Us,coirn <br />AIRCAE)ISU.S,Inc. 1030Plaza Drive, Suite 1001Highlands Ranch, CO 80129 <br />T3O347184381IM: 3O38193312 <br />hftps://mai|.google.com/mail/u/0/?ui~2&i�e29129fcb5&vi ew=pt&search= inbox&th= 1m|~156a43fcd264089u 5/10 <br />