905 80TH ST SW MTORRES AMERICA 2018-09-18

i. Construction equipment and vehicles must be maintained so they do not leak fuels or lubricants. During construction, a staging area must be specified for all vehicle maintenance activities. The staging area must be located well away from all drainage courses. Where possible, all stormwater from related maintenance areas must be I directed to the sanitary sewer, rather than the stormwater system. ii. During construction activities, all spills of fuel and hazardous materials must be Icontained and removed in such a manner as to prevent their entering the waters and p soils of the State. Cleanup of spills must take precedence over other work on site. iii. During construction, all petroleum products, chemicals, and building materials that could contaminate runoff must be stored in a lined covered area. An impervious berm must be constructed around theperimeter of the storage area. The storage area must be located away from environmentally sensitive areas. iv. In order to expedite plan review, a hazardous materials inventory list shall be provided as a part of the submittal for building permits. The storage, handling and use of hazardous materials must be in compliance with Article 80 of the Uniform Fire Code, 1991 Edition. SoLeCA' esponse: The notes have been added to the revised Demolition & T.E.S.C. plans. ' &,0 4 f. Identify on the plan's landscaped areas that are to be planted to meet the 30sf of landscaped area per parking space, and provide area calculations showing the standard is met. Response: Area calculations will be provided on the Architectural Site Plan included with the building submittal. efP 3. Stormwater:Jane Zimmerman ---gtX TAN\ oil 6 \A\() a. A pre-treatment device that has received a General Use Level Designation (GULD) from Ecology for pretreatment of stormwater must be provided prior to discharge to the wet detention pond. The design of the chosen facility must meet the design criteria found in the Ecology GULD. The currently specified device in the stormwater design memorandum and shown on the plans has not received a GULD from Ecology for pretreatment. Response: The Hydro-International Downstream Defender, a GULD-approved pretreatment device, has been specified in the revised plans and the revised stormwater memorandum, included with this submittal. b. The grading plans must also show the grading and contours necessary for the channel construction, in addition to those for the pond and site areas. The grading in the bottom of the conveyance channel must be changed because it does not match the previously approved grading plan, or the wetland mitigation plan. The slope of the channel is to be 0.87% and the channel is widened in numerous areas. 1