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Chapter 1.0 <br />STORMWATER MANAGEMENT IN EUGENE <br />This chapter outlines the City of .Eugene's stormwater management requirements. <br />L1 INTRODUCTION.. .... ........ ... ww...... w__._.........._.......,__....._ w.... ..._w.w_w.....w_....ww..w._..._ 2 <br />L2 PURPOSE OF THE MANUAL...._._ .... _ .......... _ . ........... . ......_.._.....— 3 <br />13 SUMMARY OF MANUAL ......... 4 <br />L4 DEFINITIONS..__..._-__-_^_.,......__..___....__........... _._.. ww.. w. w_ w....._....,.,..___..,._._...._ 6 <br />7..S PREPARING A STORMWATER MANAGEMENT PLAN..._. ___...__._...._____.._.......13 <br />1.6 STORMWATER FLOOD CON7' HOL._____..__ w..__....___..... ...._....._....._..______..w.w7 S <br />1.6.1 The Purpose of Starmwater Flood ControL .........................................15 <br />1.6.2 Flood Control Design Metho dology ........................ .............................15 <br />1.6.3 Off-Site Stormwater Facilities ................. .............. . .............................15 <br />1.6.4 On -Site Retention and Debention ............................. .............................16 <br />1.6.5 Underground Injection Control Structures (UICs) .............................16 <br />L7 STORMWATER QUALITY ____.._____..._._._ w__..__ w_._. ............ .__w___..____ --- -17 <br />1.7.1 The Purpose of Stormwater Quality .......:..................... <br />1.7.2 Stormwater Quality Design Metho dologies ........... .............................17 <br />1.8 OIL CONTROL FOR HIGH -RISK VEHICLE AND EQUIPMENT TRAFFIC AREAS.. 18 <br />1.9 - FLOW CONTRDL._..._........w.. www.. ww.._ ............._.... ..... ___ ..... ___ ._w_ ....... ..... ....... _.....19 <br />1.10 INTERLOT DRAINAGE. w ................... ................._........__ww. www. .w.www...........4....w..y.__ZO <br />1.11 OTHER REGULATORY STORMWATER PROGRAM _.._:_..... _.._...:....._..__....._ ..... 21 <br />1.11.1 Illicit Discharge Program. .......................................... m ........... ....... * 21 <br />1.11.2 Industrial Pretreatment Program .................................................. ........ 21 <br />3.11.3 Oregon DUQ U nderground Injection Control {UIq Program......... 21 <br />1.11.4 OFhee Local, State, and Federal Programs ............ ............................... 21 <br />1.12 STORMWATER MANAGEMENT RETROFIT5w......... ww..... ww_...w...w__....= _.W__..._..23 <br />1.13 STORMWATER SYSTEM DEVELOPMENT CHARGES.._ ................ ww ... .............__..24 <br />1.13.1- Credits ........................................................................ ............................... 24 <br />1.14 EQUIVALENT ON -SITE AREA GUIDELINES w......_...._.__.._...... .ww..._...._.....:w....._....26 <br />Sw mwater Management Manual 1 -1 <br />Eugene 2014 <br />