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Last modified
1/25/2010 6:47:45 PM
Creation date
10/5/2006 1:08:03 AM
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Floodplain Documents
County
Statewide
Basin
Statewide
Title
Storm Water Management for Constructed Activities
Date
9/1/1992
Prepared By
EPA
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />Chapter 1-lntroduction <br /> <br />Developing a Storm Water Pollution Prevention Plan is, therefore, a six-phase process. Because <br />most aspects of the Storm Water Pollution Prevention Plan take a sig nifi,:ant amount of planning, <br />its development must be closely connected to the development of your overall site plan for <br />construction. You must keep storm water considerations in mind as YOll develop your site plan. <br />The Initial Site Planning/Design Development Phase starts the proces,!. The next phase, the <br />Assessment Phase, involves gathering information about your site, such as determining drainage <br />patterns and runoff coefficients. Then you will enter the Control SeIElcti'Jn/Plan Design Phase, <br />using the information collected during the Assessment Phase to select BMPs. Following Control <br />Selection and Plan Design is the Certification/Notification Phase. In this phase the plan is certified <br />by the owner and operator of the construction project and a notice is sellt to the government <br />agency which is responsible for NPDES permits in your area. The nelet stage is the <br />Implementation/Construction Phase, during which you put your Storm Water Pollution Prevention <br />Plan to action and construct your facility. Periodic reviews, inspections, and evaluations will allow <br />you to keep the plan up-to-date and effective. Finally, as construction a,:tivities are completed, you <br />reach the Final StabilizationfTermination Phase during which you put intc, place permanent controls. <br /> <br />Chapter 5 provides recommendations to assist the readers in selectinll the most appropriate BMPs. <br />A combination of these types of BMPs may be most appropriate for your site. <br /> <br />In addition, there are a few appendices included in the back of this manual. Appendix A includes <br />checklists relating to specific elements of Storm Water Pollution Prevllntion Planning. Appendix B <br />provides technical design specifications for the BMPs described in Chapt,ers 3 and 4. Appendix C <br />shows what a model plan should look like. Appendix D lists referenclls ,Ind resources. Appendix E <br />contains a glossary of terms. Appendix F contains a list of hazardous, substances and reportable <br />quantities. Appendix G lists references for rainfall data. Appendix H lists efficiencies for several <br />types of BMPs. <br /> <br />1.3 DEFINITIONS <br /> <br />Throughout this manual you will see four key words and phrases used oller and over. A solid <br />understanding of these concepts is very important in meeting the goals af storm water <br />management discussed above. <br /> <br />The first term of importance is "Storm Water Pollution Prevention Plan IS,WPPP)." As mentioned in <br />Section 1.1, this manual is designed to help you to prepare and implement a Storm Water Pollution <br />Prevention Plan. As you will learn in Chapter 2, storm water pollution prevention consists of a <br />series of phases and activities to, first, characterize your site, and then, to select and carry out <br />actions which prevent the pollution of storm water discharges. <br /> <br />The next term is NPDES Storm Water Permit or permit. NPDES is anacr'lnym for National Pollutant <br />Discharge Elimination System. NPDES is the National program for isslJinll, modifying, revoking, <br />etc., permits under Sections 307, 318, 402, and 405 of the Clean Water Act (CWA). A permit is <br />an authorization issued by EPA or an approved State to discharge under c;ertain specified <br />conditions. <br /> <br />The other term used throughout this manual is "Best Management Practice" or BMP. BMPs are <br />measures or practices used to reduce the amount of pollution entering surface waters, air, land, or <br />ground waters. BMPs may take the form of a process, activity, or physie:al structure. Some BMPs <br />are simple and can be put into place immediately, while others are more c;omplicated and require <br />extensive planning. They may be inexpensive or costly. This manual describes numerous BMPs <br />which you may use as part of your Storm Water Pollution Prevention Plan. <br /> <br />1-2 <br /> <br />September 1992 <br /> <br />I <br />I <br />.1 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />I <br />I <br />I <br /> <br />I <br />, <br />
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