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iii iiiiiiiiiiii iii Larry: I'll be coming into the office (briefly I hope) Tuesday Morning to tie up a few loose ends, and will give you a call. I will direct Reschke to submit NOV 97-016 extension request to you, since I will be gone until January 5. I have attached a draft Extension Notice, and cover letter for your consideration, if you determine that Reschke's request for extension is approvable, as we discussed. Also, I have reviewed the TR-23 submittal, which is the revised ditch designs in response to NOV 97-016. The operator proposes to revise ditch dimensions and slopes for CRDA-2 Upper Diversion as specified in the NOV. Exhibit 53, Section G-G design was revised amended SEDCAD calculations in support of the revised designs were provided.. I will entrust Erica to review adequacy of the revised designs. -, Operator states in cover letter that RSRDA South Diversion will in fact carry design flows with required freeboazd, and that DMG calculations were flawed due to inappropriate vegetation cover class (we used "B"; Reschke says "D" is appropriate due [o cheatgrass cover chazacteristics). I think he may have a case here, as cheatgrass would likely offer considerably less resistance to flow than a stand of more robust perennial grasses such as brome or wheatgrass. However, even conceding that point, Exhibit 20, Section T-T design will need to be revised to reflect the actual minimum ditch dimensions. Request for amended Exhibit 20 will need to be included in adequacy letter. ALJe/ yi°PN"~-# G~`'~,'~1~1~r. ~er~~. G.;/r ~ ~ f:r:/ Za /fir,;~, Since I will be on vacation until January 5, I would request your assistance in forwazding my one adequacy issue and any issues that Erica identifies to the operator, and if those issues aze resolved prior to my return, in issuing the proposed approval decision. I will get completeness notices to you for mailing on Tuesday morning, and will check in with you at that time.