Changes

*<u>'''The average dry weather flow</u> ''' is the daily average flow when the ground water is at or near normal, and a runoff condition is not occurring.*<u>'''Average wet weather or peak month flow</u> ''' is the daily average flow for the wettest 30 consecutive days for mechanical plants or for the wettest 180 consecutive days for controlled discharge pond systems. The 180 consecutive days for pond systems should be based on either the storage period from approximately November 15 through May 15 or the storage period from approximately May 15 through November 15.*<u>'''The peak hourly wet weather flow</u> ''' is the peak flow during the peak hour of the day at a time when the ground water is high and a five-year one-hour storm event is occurring. To determine this five-year one-hour storm event for the specific project, please refer to the local weather service in your area.*<u>'''The peak instantaneous wet weather flow</u> ''' is the peak instantaneous flow during the day at a time when the ground water is high and a twenty-five year one-hour storm event is occurring.

''[[Practitioner's Tool / Planning and Promotions / Step 4: Determining Pretreatment Needs – Grease|Proceed to Step 4]]'' ''[[Practitioner's Tool / Planning and Promotions|Back to the Planning Page: Determining Pretreatment Needs – Grease]]''