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Home My WebLink AboutSW6221001_Supplement-EZ Form_20230622SUPPLEMENT-EZ COVER PAGE IF4'.'DIFDI`JI"; I..G"p�D`Dlf:.11'1 PROJECT INFORMATION... ........ ....... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... 1 Project Name ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... MacRidge & Chicken Road Intersection Improv. 2 Project Area (ac) .... .... .... .... .... .... .... .... .... .... 6.6 .... .... .... 3 Coastal Wetland Area ac 0 4 SurFace Water Area (ac) .... .... .... .... .... .... .... .... .... 0 .... .... .... 5 Is this prdRct High or Low Densit ? High g Does this project use an off -site SCM? No E 211IM1A5 11.9 IDIE:li1 Certification Statement: I certify, under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or supervision; that the information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete; and that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent with the information provided here. y,�yza�C�ur�yw5�r�rr r" •. z SEAL 28421 1r Signature of Designer 0612212023 Date DRAINAGE AREAS DRAINAGE�AREA�INFORMATION...................................... "Ent W,e S to""'"` 4 T e of SCM Bioretention Bioretention 5 Total drainage area s ft 289515 53746 12633 6 Onsite drainage area (sq ft 289515 53746 12633 7 Offsite drainage areas ft 0 0 0 8 Total BUA in roject (sq ft 186254 sf 41530 sf 8541 sf New BUA on subdivided lots (subject to permitting I 9 s ft N/A N/A N/A New BUA not on subdivided lots (subject to 10 ermittin sf 47750 sf 41530 sf 8541 sf 11 Offsite BUA s ft 12 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Breakdown of new BUA not on subdivided lots: - Parkin s ft - Sidewalks ft - Roofs ft - Roadwa s ft 47750 sf 41530 sf 8541 sf - Futures ft - Other, please specify in the comment box below s ft New infiltrating permeable pavement on 13 subdivided lots s ft New infiltrating permeable pavement not on 14 subdivided lots s ft Existing BUA that will remain (not subject to 15 ermitting) (sq ft 136183 sf 16 Existing BUA that is already ermitted (sq ft 17 Existing BUA that will be removed s ft 18 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Pe rcent BUA 64% 77% 68% 19 Design storm inches 1.0 in 1.0 in 20 Desi n volume of SCM cu ft 3330 cf 710 cf 21 Calculation method for design volume Simple Simple Please use this.. space.. to.......p rovide an.......Y additional information about the 22 drainage area 9 (s:) B...I...O...RE...TE...NT.I ON. CELL 1 Drainage area number 2 Minimum required treatment volume (cu 11 es es No Yes Yes p (pre ..............Y......... es Yes N/A Yes .......Y......... es ................ Yes ................ Yes n 0 Grass ................................................................ 24 in ............................................................... 80% ................................................................ 10% ................................................................ 10% ................................................................ Pine Bark Fines ................................................................ 25 ..............................Y.................................. es ................................................................ Yes ................................................................ N/A ................................................................ N/A ................................................................ N/A ................................................................ R.R. Forebav 2 No Yes Yes mp (pre ............................... Yes Yes N/A n Grass ................................................................ 30 in 8 ............................0%.................................... ................................................................ 10% ................................................................ 10% ................................................................ Pine Bark Fines ................................................................ 25 ................................................................ Yes ................................................................ Yes ................................................................ N/A ................................................................ N/A ................................................................ N/A Bioretention 1 1:06 PM 6/22/2023