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28 <br /> DISTRICT IMPERVIOUS SURFACE/DETENTION POND <br /> REQUIREMENTS <br /> (RESIDENTIAL) <br /> • <br /> UNIV-CA 6% impervious surface limit for subdivision, no <br /> UNIV-PW detention ponds required. <br /> (Lots created after April 2, 1990) <br /> UNIV-PW Impervious surface limits as provided in the table <br /> UNIV-CA below entitled Sliding Scale for Residential Impervious <br /> (Lots created before April 2, 1990) Surface Ratios. <br /> CANE-CA Detention ponds are not required. <br /> CANE-PW <br /> U-ENO-CA <br /> LITTLE-PW <br /> FLAT-PW <br /> HYCO-PW <br /> BACK-PW <br /> U-ENO-PW Impervious surface limits as provided in the table <br /> below entitled Sliding Scale for Residential Impervious <br /> Surface Ratios for development of existing lots and <br /> development of new in areas where the minimum lot <br /> size is at least 1 acre. <br /> Developments with residential density greater than one <br /> du/acre are subject to a 30% impervious surface limit, <br /> with BMPs required if impervious surface exceeds <br /> 12%. <br /> L-ENO-PW 3G% 70% impervious surface limit, with BMPs <br /> required when: <br /> a) curb and gutter is not used, and density exceeds <br /> 3 du/acre AND impervious surface exceeds <br /> 36%; OR <br /> b) curb and gutter is used, and density exceeds 2 <br /> du/acre AND impervious surface exceeds 24%. <br /> HAW-PW 24% impervious surface limit, with no BMPs required. <br /> JORDAN- <br /> PW <br /> 5 <br />