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4300 Cherry Creek Drive South <br />Denver, Colorado 80246-1530 <br />I INTRODUCTION <br />RATIONALE <br />STORMWA TER DISCHARGES ASSOCIATED WITH <br />CONSTRUCTION ACTIVITY <br />GENERAL PERMIT IN COLORADO <br />THIRD RENEWAL <br />COLORADO DISCHARGE PERMIT NUMBER COR -030000 <br />CONTENTS PAGE <br />Introduction <br />1 <br />Changes in this General Permit <br />1 <br />Background <br />8 <br />Stormwater Discharges Associated with <br />Construction Activity <br />9 <br />Coverage Under this Permit <br />10 <br />Application and Certification <br />10 <br />Qualifying Local Programs <br />11 <br />Terms and Conditions ofPerrnil <br />11 <br />Public Notice — 12122106 <br />15 <br />Public Notice — 3123107 <br />15 <br />This permit is for the regulation of'stormwater runoff from construction activities, and specific allowable non - <br />storm water discharges in accordance with Part I.D.3 of the permit. The term "construction activity" includes <br />ground surface disturbing activities, including, but not limited to, clearing, grading, excavation, demolition, <br />installation of new or improved haul and access roads, staging areas, stockpiling offtll materials, and borrow <br />areas. "Stormwater" is precipitation -induced surface runoff. This rationale will explain the background of the <br />Stormwater program, activities which are covered under this permit, how to apply far coverage under this permit, <br />and the requirements of this permit. <br />The forms discussed in the rationale and permit are available on the Water Quality Control Division's website <br />at: F� itirv.e rlphe.slr►tr..rrr_rr.►/�sr lhera�it+Uiiit <br />IL CHANGES IN THIS GENERAL PERMIT <br />Several notable changes from the previous General Permit for Construction Activities have been incorporated into <br />this permit. Significant changes are listed below. Numerous other minor changes were madefor clarification <br />purposes only. <br />A. 11whor•i1 to 1.)i.rr•harLT <br />This section has been restructured to list all of the types of activities covered by this permit, and to be <br />consistent with the definition of "construction activity. " The definition of construction activity has been <br />expanded to provide clarification. See Part I.A.1 of the permit. <br />