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' <br /> ' Sformwater Pollu6on Prevenfion Plan <br /> � Outict Protection (I3\4P C209) <br /> ' Alternate channel a�id ouUet staUilization 13Iv1Ps are includcd in :\ppendix C as a quick rcference <br /> tool for thc onsitc inspector in the evcnt the BMP(s) listed above are deemcd ineffcctive or <br /> t inappropriatc during construction to satisfy the reyuiremcnts sct forth in thc Gencral NPD[S <br /> Pemiit (.Appcndix ll). 'Ib a�'oid potcntial crosion a�id scdimcnt control issucs that may causc a <br /> violation(s)of thc NPDfiS Construction Stonm�:�ter permit (os provided in Appendi>: D), the <br /> t Certified Erusion and Scdimcnt Control Lc�d �cill prompth� initiate thc implemcntation of onc or <br /> morc of thc altcmatice II\4Ps lislcd in Appcndix C aficr thc first sign that csisting [3�iPs are <br /> inciTccti��c or failing. <br /> ' l�he projcct site is located ��est of the Cascade �tountain Crest. As such, all tcmparary on-sitc <br /> conve�ance channels shall he designed, constructed, and stabiliud to prevent crosion from the <br /> ' e���ected peak 10 minute ��clocit�� of Oo�v Gom a 'C)pe lA. 10-J•ear. ?�3-hour recurrence inten:�l <br /> stonn for the de�clopcd condition. Altemati�eh�, the 10-�ear. 1-hour pcal: flo��� rate indicated h} <br /> , an appro�ed continuous runotl simulation model, inercase�l by a factor of L6, shall be used. <br /> Stabilization. including annoring matcrial. adcquatc to prcvcnt crosion of outicts, �djaccnt <br /> strc:nnbanks, slopes. and donnstrcam rexhes �hall he pro�•ided at the oudcts of all com�cyance <br /> ' S\'tilCf17S. <br /> ' 3.1.9 Element #9 —Control Pollutants <br /> All rollutants, including �caste materials and demolition debris, that occur onsite shall he <br /> handled and disposcd uf in a manncr that docs not c:�usc cont:imination of stomi��'atcc Good <br /> , housckccping and pn�'entati�c mcasures ��'ill bc takcn to cnsurc ihat thc sitc ���ll bc kcpt cl��n. <br /> �cell organized, and fire ol dchris. If required. 13A1Ps to br impiememed to control �recilic <br /> sourccs o(pollutants are discusscd bclo���. <br /> ' Vchicles, construcuon equipmcnt. �nd/or petrolcum product storace/dispcnsing: <br /> ' ■ All ��chicles, cyuipment, ancl peirolcum product stornge/dispensing areas <br /> ���ill he inspec�ed regularly to dciccl any le.tks or spilis, anci tc� idcntilj <br /> ' mointcnancc nccds to prcvcnl Icaks or spills. <br /> ■ On-sitc fi�clirg tanks and pctroleum product storagc containcrs shall <br /> , includc sccondary containmcnt. <br /> ■ Spill pre�•cntion mcasures, such as drip pans, �vill bc used ��hcn <br /> ' conducling maintcnancc mid re�iair of vchicics or cyuiPmcnt. <br /> ■ In order to perfonn emergency repairs on site, temporary plastic ���ill Uc <br /> , placed bencath and, if raining, o�'cr ihc vchicic. <br /> ' lo <br />