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Attachment 4 - Stormwater Managment Plan
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Log in to see the plans as drawnCONTENTS
1. PROPOSAL OVERVIEW ..................................................................... 3
2. EXISTING SITE CONDITIONS ............................................................ 4
3. EXISTING LOCAL AREA DRAINAGE PATTERNS............................... 5
4. STORMWATER MANAGAMENT ....................................................... 6
4.1. Pre/Post Developed Site Run-Off Co-Efficients ................................... 6
4.2. Roof Stormwater Harvesting ................................................................ 7
4.3. Overall Developed Site Music Model ................................................... 8
4.4. Site WSUD Treatment Measures ........................................................... 9
5. WASTE WATER MANAGEMENT SYSTEM ....................................... 10
5.1. Existing Site Conditions ...................................................................... 10
5.2. Car Wash Waste Water Treatment System ........................................ 11
5.3. Car Wash Water Use Model ................................................................. 12
5.4. Expected Car Wash Site Patronage And Sewer Discharge ............... 13
5.5. Estimated Annual Site Patronage ...................................................... 16
5.6. Annual Mains Water Usage & Sewer Discharge With/Without
Recycling Compared. ........................................................................... 16
6. CAR WASH STORMWATER POLLUTION CALCULATOR ................ 18
7. CONCLUSION .................................................................................. 21
APPENDIX A: SPEL Stormsack
APPENDIX B: SPELBasin
APPENDIX C: Car Wash Recycle Unit
APPENDIX D: Australian Car Wash Association-
Stormwater Statement/Environmental Policy
-2-
TMC Building Design Group
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