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MINIMUM REQUIREMENT NO. 9: OPERATION AND MAINTENANCE <br />Site elements will be operated and maintained according to Volume 5 of the SWMMWW and the <br />manufacturer's recommendations. As the pump system is design build, the contractor will submit the pump <br />station operations and maintenance manually separately. See Appendix E for the Operation and Maintenance <br />Manual. <br />4. LID Site Assessment <br />The proposed project will implement low impact development (LID) in accordance with the SWMMWW. The <br />following is an evaluation of the List #2 BMP categories (Figure 5-1). See Appendix F for the geotechnical <br />report describing subsurface conditions. <br />Flow Chart for Determining LID MR N5 Requirements <br />Wes use project mscharge totlow 1.WUoi txempt waters <br />(per Minimum Requirement (MR) p7)? <br />Yea <br />REQUIREDi implement the following BMPs <br />where feasible: <br />BMP TS.13: Post -Construction Soil <br />tluahty and Depth <br />BMP TS.10A, 8, or C Downspout Full <br />Infiltration, Downspout Dispersion <br />Systems, or Perforated Stub -out <br />Connections <br />BMP T5.11 or TS.12: Concentrated Flow <br />Dispersion or Sheet Flow Dispersion <br />NOT REQUIRED: Achievement of the LID <br />Performance Standard. Applying the other <br />BMPs in List N1 or list IF2. <br />No <br />Does the project t Wey only Mhs No, the project <br />al W (Per Frgurr 3.2 cr Figure triggered only <br />3 3 rn Appendix 1 of the 2013 2018 MR e2 No aZlioaai <br />WWA Phase II Permit & Phase 1 requirements <br />Permit.) <br />No, the project <br />triggered MRs 01 - 09, <br />Yes <br />Is the project inside the WA7 <br />Did the project developer choose to meet the <br />LID Performance Standards <br />No, project developer <br />close List 91. <br />REQUIRED: For each surface, <br />consider the BMPs In the order <br />listed in List 11 For that type of <br />surface. Lke the first BMP that is <br />considered feasible. <br />NOT REQUIRED Achievement of <br />the LID Performance Standard. <br />Yes <br />REQUIRED: Meet the IID Per forrmancr <br />Standard through the use of any RMP(s) e, <br />the 2014 SWMMWW except for Rarer Garden: <br />(the use of Bioretention is acceptable). <br />REQUIRED for Projects Trigyrina MR 01-9': <br />Apply BMP T5.13 Post-Cornstruction Soil <br />Quality and Depth. <br />NOT REQUIRED: Applying the BMPs in I ist III <br />or List e2. <br />/ No, the project is <br />outside the LIGA. <br />Yes <br />Is the project on a parcel of <br />S acres or larger? <br />No <br />Did the project developer <br />choose to meet the I ID <br />Performance Standard? <br />Yes <br />/ No, project <br />developer <br />chose List 42. <br />REQUIRED, for each surface, <br />consider the BMPs in the <br />order listed in list e2 for <br />that type of surface. Use the <br />first 8MP that is considered <br />feasible. <br />NOt REQUIRED. <br />Achievement of the LID <br />Performance Standard. <br />Yes <br />REQUIRED: Meet the LID <br />Performance Standard through lire <br />use of AM BMP(s) in the 2014 <br />SWMMWW except for Rain Gardens <br />(the use of &oretention rs <br />acceptable). <br />If the project can't meet the LID <br />Performance Standard, it must seek <br />and be granted an exception / <br />variance. <br />RLQUIREO. Apply BMP T5.13 Post - <br />Construction Sal quality and Depth. <br />NO] REQUIRED, Applying the BMPs <br />in list al or list 112. <br />Recommended by Ecology for projects triggering MR el -5. <br />Figure 4-1: LID MR No. 5 Flow Chart (reference SWMMWW Figure 2.5.1) <br />KPFF Consulting Engineers <br />4 <br />