Drainage Report

al ACS Anderson Consulting Services LLC Canoe Brook Tributary Summary A second stream onsite is a tributary to the Canoe Brook connecting to the main stream about % mile downstream. The project has been analyzed to determine if the stormwater standards have been met on a watershed basis as well as the individual area outlined above. The results are summarized here with detailed hydrocad calculation in the back of this report. The contributing flows to the Canoe Brook Tributary are Infiltration Basin 2, Infiltration Basin 3, Porous pavement system 4, Infiltration Basin 5 and overland flow. 2yr 10 yr 100 yr EXISTING 12.48 30.33 69.87 PERMITTED 6.24 21.23 55.90 BASIN 2-1 04 44 2.50 BASIN 2-2 11 61 2.02 BASIN 2-3 15 75 2.26 BASIN 2-4 A4 62 2.06 BASIN 2-5 19 64 1.16 BASIN 2-6 18 .68 1.27 BASIN 3 .09 87 4.35 BASIN 4 08 70 5.25 BASIN 5 0 25 2.86 BASIN 6 0 i¢) ie) OVERLAND BASIN 2_| .94 4.41 6.78 OVERLAND BASIN 3__|.74 1.96 3.23 OVERLAND BASIN 4 _| .33 70 1.50 OVERLAND BASIN 5 | 2.94 5.38 10.39 TOTAL 5.94 18.11 45.63 The total discharge from infiltration basins and the un-detained flow meets the volume discharge requirements in the stormwater standard and the discharge to the Canoe Brook Tributary will reduce the flow to the neighboring properties. Basin Infiltration period Calculations Basin #1 Infiltrated Volume (cf): 63,106 Infiltration Area (sf): 38188 Permeability Rate (in/hr): 0.32 63,106 cf#12in/ft Duration of Infiltration Period (hrs.) = Bade spebaninjar = 62.71 hrs. Basin # 2-1 Infiltrated Volume (cf): 2,955 Infiltration Area (sf): 2,020 13 Permeability Rate (in/hr): 0.45 Anderson Consulting Services LLC 40 Miller Drive, Boonton, NJ 07005 973-975-0703 (O) 973-886-7336 (C) PAndersonpe@gmail.com