2909 SEAWAY BLVD 2018-01-01 MF Import

� ' Stormwater Pollution Prevention Plan NPDES Construction Stonnwatcr pemiit(as provided in Appendix D), the Certified Erosion and ' Sediment ConVol I_ead will promptly initiate the implementalion of onc or morc of the altemati�'c BAII's listcd in Appendix C a(ter thc first sign [hat existing F3\1}'s are ineffective or ' failing. 3.1.3 Element #3—Control Flow Ratcs IIn u.�er to protect ilic propertics and �aatenea}�s do«mstrcam of the project site, stormwater discharges from the site �vil] be controlled. T'he specific 131�4Ps for flow control that shali bc uscd ' on this project include: • Sediment Trap (B1�1Y C2d0) , � :Vtemate Oo�v control BMYs aze includcd in Appendix C :�.s a quick reference tool for thc onsite inspector in thc event Uie II\-iP(s) listcd abo��c arc decmed ineffecti��e or inappropriate during 6 construction to satisfy thc requircments set forth in the Gencral NPDGS Pcrmit(Appcndi� D). To avoid potential crosion and scdimcnt control issues that may c�use a violation(s) ofthe NPDLS Construction Stonmvater pemiit(as provided in Appendix D), thc Ce:tificd Erosion and ' Sediment Control Lead ��ill prompUy initiate the implemcntation oCone or more of thc altcrnati��c 13LiPs listed in nppcndix C aRcr the �rst siE;n that esisting I3�-iPs are ineffective or failing. ' 7'he project site is located ��est of the Ct�scadc \,tountain Crest. r\s such,the project must com�ly with Liinirnum Requirement 7 Q:cology 2005). ' In general, dischargc rates of stonm��ater from lhe sitc �+�ill be controllcd nhere increases in impervious arca or soil compaclion during constniction ci�uld Ic�d to do��nstrcam crosion, or ' �vhcrc ncccss�trV lo ntect local agcnc}' slortn�ti�;�tcr dischar�c rcquircmcnis(c.g. disch:u�c lo comhincd scwcr s�'s�ems). ' 3.1,d I?Icmcnt Nd — Install ticdimenl Cnntrols All stonnwalcr runoff from dis�urbcd amas shall pass Ihrough an appropriatc sedimcnt rcmoval ' 13MP hcforc icaving thc constniction sitc or prior to Ucing discharged to vi infiltration facility. Thc specific 13\4Ps to bc uscd for controiling scdimcnt on this projcct incicdc: � • Gravcl I�iltcr 13cnn (f3MP C232) � • 3edimcnt 7'rap (13MP C240) • Altemativc B\1P not included in thc S11'MTiWN (2005) or S\��D4ML'\V (2004) 1 --- 6 --- ,