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~3 <br />~a.ctio~ ~r~!~a ~~ai`~~~~{~~~~ ~~~~i~a~~~~~~~ <br />~~~ ~ Increase in peai~ i'lo~r bet~reen pre- and post deve(op~~~ent <br />conditions daes not exceed ~ 0°l~ ~e ~ ~,~Y ~~ <br />fib} Praposed nets development meets a1I o~ the ~oila~inq criteria; <br />~i~ total ir~per~~ious surface is less thin ~ 5°lp ~ <br />~~e-n~, ar~d <br />iii} remaining pervious surface ~i~~xi~~~izes storrn~rater runo~ <br />cantrof and conveyance <br />~c~ Detention quill cause iur'cher ~loodiri~g an Iands that ha~re <br />ex patience ~Iooding during previous storm events. <br />~~~ This request for exer~~ptian ~ nust be prepared by a North Carolina <br />registe~~ed pro~essiona! engineer and submitted in ~~uritinc~ to the Planning <br />Director ar Designee. appeals a~ frhis deeisian gill ~allavu ~ectian ~ -Ir <br />~.~~ oI: this ordinance. <br />~~~ ~~~~~~~~~a~g ~~~~~ ~~~~~~fi~~6us~~ <br />~~~ The ~olla~uing are acceptable rnethodologies ~~r ca~rputir~g the pre- and <br />past development condifiians nor the ~ gear, ~4 hour starn7. <br />~~} Ratiarral ~Iethad <br />~b~ Peal. Discharge Method as described in the USDA fail <br />Conservation service's Technical Release Number 55 ~TR~55~, <br />{c} Putnam f~ietl~od <br />~d} Alfiernative methods must be approved by the County and the <br />EPIC <br />~~~ The same methaal must be used far bath the prew and pasf~ development <br />conditions. <br />~~~ Raleigh Rainfall Depths <br />~,~._ . ---._._.~.._ . ~__ -.r ~ - __-____ <br />,~~ ` - <br />. ~ s.ar+~3.,, .. .. ~k'. ~,4i~. ~ ? +~jw +r ( ~ L tr fir. <br />~ yeas, ~~ ~~~~ da~th: ~.~a ~nc~o~ <br />~ ye~e,~~ hou~~ ~nten~~ty. ~nda~ deva~apment by DI~Q ~~a~f <br />Orange county, North Caralir~a -~ DRAFT Unified Development Ordinance gage ~-~5~ <br />