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JUL 24'96 16:59 FR U & H PACIFIC 206 822 5341 TO 1206259B829 P.02/09 <br />Calculations must be submitted for the compost filter treatmenu system and the <br />UPUMasa casdrol structures shOwimg that the developed peat race of Row from the 6 <br />month. 24-hour storm will be round to and [rested by the compost filter treatment <br />system. <br />:�t—A contingency p1m must be submitted to the City for review sad approval, doiWozi <br />Of the system and indicatithe steps to be taken in ft event <br />of systemfaflure. cF CIO";^ cF4t.v F; I1.r.s /redocxd -Flow <br />-ii,rwyh+w F'rkrs. QC NteeQ.mpos;hen cFrin-kci-,e. <br />A monitoring plan must also be submittwi to the City for review and approval. The <br />mch. Vftj OEoat of the monitoring plan is to document that sWrmwater runoff front the 6 mouth, <br />0 tcs l 24-hour storm jE flowing through the compost media before discharge to Merrill and , ak <br />,dtDel Ring Creck. It would appear that flow measurement ftom each bay of blurs n �Q '� <br />, 1 for'rlpossible. Is it proposed? How often? What flow rates are expected from each bay? Y k le} � <br />In addition, the height of compost media within the cartridges should be measured f r+ CV�d � b' <br />periodically (if settlement of the media is a possible problem). <br />1 also have the following questions, which may or may not be answered by the a.J'a <br />opetatfons and maintenance manual: X� <br />Do the radial cartridges more "Pre -filled" with compost, or are they filled on site? If <br />they are filled on site, the plans or maintenance manual should specify the psi ' me to CXA <br />be used. -th. <br />�w� .V'e:' �s <br />Wben maintaining the sysoeme are entire cartridges replaced, or is just the compost -tw V <br />within the cartridge replaced? cO'n k <br />a� an <br />If settlement of the compost media in the to" filter: is a possible concern, will the -a h <br />cartridges be "topped off" periodically to prevent storrawater flow from passing N� �W <br />through the cartridge without being treated by the compost media? <br />i5 gives the n of the �-- configuratio system, is it pttw'ble to determine if an individual <br />G� has failed, or just a section of cartridges? Wirt signals the need for <br />Mtn nieplacemeru of the cartridges? <br />ilrn <br />How will sediment that accumulates in the treatment cells be removed? <br />,n �^� F���? <br />bus 5 gJ�9 5 �FC� r',4 <br />tea( ,a � r08 �e <br />JE%kI' W �s �r CC <br />rap cc <br />��5 n vaC lTr <br />d� <br />07/24/96 16:52 TX/RX N0.0327 P.002 <br />