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Michigan St. and Angela Blvd. Drainage Design <br />Design Return Period 25 years <br />Watershed Area 0.67 acres <br />Developed Runoff Coefficient 0.70 <br />Release Rate: <br />Perforated Pipe None <br />D rywe I I <br />Size <br />Permeability <br />Exfiltration Rate <br />Exfiltration Area per Drywell <br />Number of Drywells <br />Exfiltration Area, Total <br />Ex. Discharge Rate <br />1500 gal <br />1.0 in/hr <br />0.00002 feet/sec <br />620 sft/ea <br />0.0 ea <br />0 sft <br />0.00 cfs <br />Total Release Rate <br />Chambers <br />Size SC-310 <br />Permeability <br />Exfiltration Rate <br />Exfiltration Area <br />Ex. Discharge Rate <br />0.27 cfs <br />I \ <br />� g � <br />I � <br />Str. <br />FRi <br />9X�AN MH I \ <br />m-/724.81 m <br />" IE 1�=714.0 I Overflow Route <br />�� » « «<< � for ADS through ) <br />8 E=716.4 / parking lot to i I <br />_ \O Pokagon Street <br />----- ---- <br />Storm Sewer MH <br />-IM® p 1 Str. No. 100 <br />5.0 in/hr I Rim: 725.25 --_ - - - - <br />0.00012 feet/sec I Sta: 100+61.17, 2.92' Lt. <br />491 LF it <br />8o Sew r <br />2305 sft/ea " IPVC SD 21 � 0.40 0 <br />0.27 cfs 100 R <br />Storm Duration <br />(hrs) <br />25-Year Intensity <br />(in/hr) <br />Intlow <br />Rate <br />(cfs) <br />Helease <br />Rate <br />(cfs) <br />6torage <br />Rate <br />(cfs) <br />Required <br />Storage <br />(acre-feet) <br />Storage w/ Silt. <br />Factor (1.06) <br />Required <br />Storage <br />(cft) <br />0.08 <br />8.27 <br />3.88 <br />0.27 <br />3.61 <br />0.02 <br />0.03 <br />1,112 <br />0.17 <br />6.32 <br />2.96 <br />0.27 <br />2.70 <br />0.04 <br />0.04 <br />1,764 <br />0.25 <br />5.21 <br />2.44 <br />0.27 <br />2.18 <br />0.05 <br />0.05 <br />2,094 <br />0.5 <br />3.68 <br />1.73 <br />0.27 <br />1.46 <br />0.06 <br />0.06 <br />2,807 <br />1 <br />2.38 <br />1.12 <br />0.27 <br />0.85 <br />0.07 <br />0.08 <br />3,269 <br />2 <br />1.46 <br />0.68 <br />0.27 <br />0.42 <br />0.07 <br />0.07 <br />3,217 <br />3 <br />1.06 <br />0.50 <br />0.27 <br />0.23 <br />0.06 <br />0.06 <br />2,659 <br />6 <br />0.63 <br />0.30 <br />0.27 <br />0.03 <br />0.01 <br />0.01 <br />652 <br />12 <br />0.36 <br />0.17 <br />0.27 <br />24 <br />0.21 <br />0.10 <br />0.27 <br />Required Storage 0.08 3,269 cft <br />Available Storage Time for Required Storage to Infiltrate Soil <br />Chambers 3.40 hrs <br />W. 726.97 <br />Total 3,780 cft \ / 1 00 <br />U / <br />Conclusion: With the two separate Advanced Drainage Systems, the above calculations, using a 5 in/hr infiltration rate, show that /� W. 727.04 <br />the available storage is 3,780 CFT, which is over the required storage of 3,268 CFT by about 500 CFT to safely <br />collect the projected site runoff which would take 3.40 hours to infiltrate into the soil after entering the ADS Systems. - <br />I <br />I <br />------IIIII■ <br />------IIIII■ <br />��■■�a{s�I�A�iri/11�1�1�1�1� <br />��■■=����fi111111110 <br />• <br />200+00 200+50 200+75 <br />Sanitary Sewer - Pokagon Street <br />IQ <br />.14 <br />f49, 0.00" t. <br />716.71 <br />716.67 <br />245 _LF 8.1 P <br />P1 <br />i� <br />r <br />I <br />- - - - -- - _ Storm Sewer MH <br />Str. No. 101 <br />Sto: 101+99.9 , 2 91' Lt. <br />35 Sonjtory Sewer Piob @ 0.40% <br />I <br />0 <br />I <br />7 Cn <br />�i <br />Michigan St. <br />N <br />N <br />Main <br />7 <br />Sonitbry <br />Sewer MH <br />Str. No <br />Rim: <br />11 <br />27.85 <br />`rr 8" IE, <br />= 717.69 <br />• <br />• <br />I <br />IIIII■-------------------IIII■IIIII■-_�_�_-_IIII■IIIII■---���ii��� <br />I <br />IIII■-------------------IIIII■ <br />�� <br />� <br />IIII■---}-��I/LI�I-I,_ <br />���i�-----------IIIIIIIIIr��----��----IIIIII■IIIIII■���5 <br />rij:lLa�--� <br />���1��11111F�.T1R1�1����-���ii����■■/�Ai%7_.S�lifs•7i�17+7►[�if3ta�"►�%■�11��� <br />�����6'���_�0`1Q'�l�•�1'y"�w��ii�������������■■�ai�ai�ai�/i�a�/Y�11 <br />��� <br />���vs�i7i���/Lilt•1���������������■■���J!1�!IIJ!�1���I <br />" <br />��I��� <br />��� <br />�������!l1�1Alr.T.�I�V <br />• • <br />• • <br />• • <br />C•Z•�C•�i•�C!�!]��������■�■■��IiYiYf�fl�ii <br />_-----_�����i• <br />• • <br />• • <br />• • <br />• ! <br />•11 i <br />'• - r<��---IIIIIIIIIIIIII■■IIIIIIIIIIIII■■■ <br />�-r.. <br />•--.-� <br />�r--- <br />��������>�CN3�1/,1��������������■�■■ <br />�/�i�/_f`i�il_�ii���iYi■�'ii�11�2iiii��i11_�i�i�ll <br />��� <br />����������1 <br />������:■Dili'fly'�i�"LTu1•'�����■�■■��������:��� <br />��������1�11!I!�■r�l1l��������������■�11iJis•fL�•17������1��� <br />19"1MN9RM-". <br />�i>t'>T��_�_�_�_�_����� <br />99+75 100+00 <br />100+50 <br />101 +00 <br />101 +50 <br />102+00 <br />102+50 <br />103+00 <br />W <br />LEGEND <br />Storm Sewer <br />Sanitary Sewer <br />w Water Main <br />-E- Buried Electric Fiber <br />- - - - Overhead Line <br />-750- Contour <br />- Existing Curb <br />- - - - Existing Sidewalk <br />SCALE: 1" = 20' <br />0 10 20 40 <br />W <br />>o <br />� 0) <br />T�}} <br />_ <br />>> <br />[Lv� <br />�> <br />U <br />a <br />Q <br />Q <br />: C <br />ova)-0t: <br />Z <br />U <br />N <br />O <br />2 <br />z <br />U <br />U <br />00 10 !_ <br />o <br />°zoo <br />1) <br />-6 co U <br />V <br />Q <br />. <br />(1)n! b <br />0 M <br />NN E <br />o <br />coV)1 O <br />u <br />n <br />i <br />U <br />� <br />J <br />J <br />a <br />LU <br />Z <br />0 <br />cn <br />0 <br />N <br />CC <br />Z <br />y <br />- <br />W <br />Q <br />i <br />ZCL <br />as <br />H <br />Z <br />N <br />� <br />a <br />Z <br />Z <br />W <br />V <br />v' <br />V <br />OLU <br />o <br />C <br />Z <br />0 LU <br />Z M <br />a0 <br />W <br />06 <br />H Z <br />� Q <br />H <br />Z <br />a0 <br />H N <br />w <br />J <br />H <br />W <br />W <br />2 <br />N <br />DRAWN BY: <br />MSS <br />DESIGNED BY: <br />MSS <br />PM REVIEW: <br />RTN <br />QA/OC REVIEW: <br />DATE: <br />4/6/2023 <br />SEAL <br />F'R i. N4 V,%, <br />. Na5q <br />TER�O� �- <br />60016991 <br />= STATE OF <br />\ � ANP <br />',,,i���►Iloll 111111 ,�`,�, <br />SIGNATURE: <br />7(2"�rT <br />DATE: <br />07-01-2024 <br />SCALE: <br />H O R Z: 1 "=20' <br />VERT: 1 "=5' <br />ACI JOB # <br />24-0068 <br />SHEET NO. <br />9 of 15 <br />