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YQAST TR-43 PAR COMMENTS <br />?. eeause these structures will e?ntr?l ru.nofffr?m ?.isturhe areas, all ??'these pr?p?se <br />structures must ? loeate? glen ?irainaes h?.raulrcally? up-?xa?ent ?ra?? an approve <br />se?dirnentation pond that leas a ?? pel°rnlt. ?+?? add a statement to tie rc?i?e? test <br />on p ? 1, Fab ?? tt? ?lari?y that any such r??nof? c+ar?tro? struetur?s will he loeat?? <br />?p-ra?ie?.t frorr? e?risti? s?+?imer?t pons with a??roved ??" permits. <br />?. have received caminent rearm the propase?d runoff e?ntrol structures fr?rn the <br />?11?'11?1? (?? qtr esourees. lnee the strLlCture 1s sub?]et t? a??n1I71s?rat?an It must rl?t <br />store water ?ut?c??=prl?rlty?. .11 stQrae must be ?ra?ne? from the rul?a?ff c?ntr?l structures <br />?vltl?ln twenty-four l?aurs ?r as cllrecte? l? the ?lvlsl?n nlneer andl?r mater c???nl?n?sslcn?er. <br />The DID' ??.errrorn?dnrr? fr??n rai I'. his, ?.E., 'titer Ies+?urces Engineer, is a.ttaehe?. <br />`lease prov??de ? response a?.d approp?rat? ?esr? changes ?? cornpl with the I?w <br />?ir•ective, <br />Tl?e ?eslgn, construet1on, and l?naintenanee ?f the ??l??ff` e??tr?l t?.?cture must e??ure <br />that water fl??vs tl?rouh the control structure f?l?o?vin a storm event... e??taln resin <br />and eonstruction rno?fieations are vvarrante?d in ?or?er to ensure that the strictures will <br />net il?npoun? water, and 111 ca?nply ?vlth th+e I? rc?nest reference In 1te1?n ? ahave? <br />The current ??eign ?v?ul+d ?lnpoun water between the t?vo pipes ante the lever pipe inlet <br />i buried with secli?nent? and between the upper pipe and open sp?lla? channel. once tl?e <br />upper pipe inlet is bul-ie?d. : p?'operly slotted riser pipe exten?e?d fro??n tl?e leer <br />d?schat ? i e up to the open splll?vay elevation lna he s?ufficlent to pr operly ?e?vater the <br />?? <br />structure wit?lin 4 hours throughout the life off` the structure. Please revise the designs <br />for the runoff c?or?trol structures and incor??orate slotted ?lser pipe or alternative <br />+desin that will drain all storage itl?xu ?? hours throul?+?ut the life o? tie <br />structure. <br />Further, please ?neud the permit text in ?'ah o pale 1 ?, ?? include statement that <br />these runoff control st?rutctures are ?+?? inten?e? to imp?ouu? water, ?? will ? <br />coustrueted ar?d maintained to drain ??? stc?rae withlu ?4 hours.. <br />Cindy Br+?v?n <br />1?l.arela Talvltie