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ABRIDGED TECHNICAL MEMORANDUM - TASKS 3.1 and 3.2 <br /> TO: Robert Deuel, P.E. - City Engineer <br /> City of Medford, Oregon <br /> FROM: James R. Hansen, P.E. <br /> Project Manager, Brown and Caldwell <br /> DATE: July 13, 1995 <br /> PREPARED BY: Dave Moss, P.E. <br /> Brown and Caldwell <br /> REVIEWED BY: James R. Hansen, P.E. <br /> Brown and Caldwell <br /> SUBJECT: TM 3.1 - Review and Assess Existing Drainage Standards <br /> TM 3.2 - Recommend Draft Drainage Standards <br /> PROJECT: Update Medford Area Drainage Master Plan <br /> CONTENTS <br /> Page <br /> INTRODUCTION 3 <br /> APPROACH 3 <br /> EXISTING DRAINAGE STANDARDS 4 <br /> REVIEW OF OTHER DRAINAGE STANDARDS 4- <br /> Intensity- Duration - Frequency Curves 7 <br /> On -site versus Off -site Detention/Retention 8 <br /> Infiltration Systems 8 <br /> Erosion Control Criteria 9 <br /> Maintenance- Related Criteria 12 <br /> RECOMMENDED DRAINAGE STANDARDS - ''� r' 13 <br /> Intensity- Duration - Frequency Curves 13 <br /> On -site versus Off -site Detention/Retention 13 <br /> Infiltration Systems 14 <br /> Erosion Control Criteria 14 <br /> Maintenance- Related Criteria 18 <br /> Access/Easements /Rights -of -Way 19 <br /> Inspections 19 <br /> DRA1H 1' <br /> 1:21 1YXI'ask tWn3l.eug <br />