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MUKILTEO SCHOOL DISTRICT -'�- CENTRAL FACILITY <br /> DETENTION STORAGE CALCU Ti NS LSA No. ?.337 <br /> Department of Fisheries St r ater Release Criteria <br /> BASIN S ' Y <br /> BASIN ID: 02E NAME: 2-YR EXISTING <br /> SBUH METHODOLOGY � <br /> TOTAL AREA. . . . . . . : � T s � BAS�.FLOWS: 0.00 cfs <br /> RAINFALL TYPE. . . . : TYPElA PERY OUS AREA � <br /> PRECIPITATION. . . . : 1.40 inches AREA�� 5.35 A s <br /> TIME INTERVAL. . . . : 1a.00 min CN. . . . : 82.00 <br /> TIME OF CONC. . . . . : 49.04 min IMPERVIOUS AREA , <br /> ABSTRACTION COEFF: 0.20 AREA. . : 0.00 Acres <br /> CN. . . . 98.00 <br /> TcReach - Sheet L: 150.00 ns:0.4000 p2yr:• 1.40 s:0.0333 <br /> TcReach - Shallow L: 200.00 ks:3.00 s:0.0080 <br /> PEAIt RATE: 0.11 cfs VOL: 0.13 Ac-ft TYME: 660 min <br /> BASIN ID: 02F NAME: 2-YR DEVELOPED <br /> SBUH METHODOLOGY � <br /> TOTAL AREA. . . . . . . : ��res BASEFLOWS: 0. 00 cfs <br /> RAINFALL TYPE. . . . : TYPElA P OUS AREA <br /> PRECIPITATION. . . . : 1.40 inches ARE . . . 0.00 Acxes <br /> TIME INTERVAL. . . . : 10.00 min CN. . . . : 86.00 <br /> TIME OF CONC. . . . . : 15.00 min IMPERVIOUS RREA � <br /> A1;STRACTION COEFF: 0.20 .��+• • � � � <br /> CN. . . . 97.70 <br /> PEAK RATE: 1.29 cfs VOL: 0.51 Ac-ft TIME: 480 min , <br /> �r ,� <br /> x . <br /> - BASIN ID: 02F-B NAME: 2-YR DRAINING TO CLOSED DEPA.ESSIONS y X'�� <br /> SBUH METHODOLOGY • <br /> TOTAL AREA. . . . . . . : � 60 Acr� BASEFLAWS: 0.00 cfs K <br /> 2 -n .. r <br /> RAINFALL TYPE. . . . : TYPElA ' PERVIOUS AREA .�- �,^ <br /> PRECIPITATION. . . . : 1.4Q inches AREA. . : 0.00 Acres �� � ��' <br /> TIME INTERVAi. . . . : 10.00 m1n N. . . . : 86.00 � �• � <br /> TIME OF CONC. . . . . : 8.92 min IMP IOUS AREA • /���` �� <br /> ABSTRACTION COEFF: 0.20 Al2EA. . : 0: 5 Acr <br /> CN. . . . <br /> TcReaoh - Sheet L: 200.00 n_=:0.0110 p2yr: 1.40 s:0.0050 <br /> TcReach - Channel. L: 300.00 kc:21.OJ s:0.0050 <br /> PEAIC RATE: 0.12 cfs VOL: 0.04 Ac-ft TIME: 480 min <br /> BASIN ID: 25E NAME: 25-YR EXISTING <br /> SBUH METHODOLOGY `� <br /> TOTAI. AREA. . . . . . . : 5.50 Ac��res> BASEFIAWS: 0.00 cfs ! <br /> RAIMFALL TYPE. . . . : TYP � --PEAVIOUS <br /> PR£CIPITATTON. . . . : 2.50 inches AREA. . : 5.35 Aor�s� ' <br /> TTME INTERVAL. . . . : 10.00 min CN. . . . : 2.-QD" <br /> TIME OF CONC. . . . . : 49.�a�: min il�lPERVIOUS AREA <br /> ABSTRACTION COEFF: 0.20 AREA. . : 0.00 Acres <br /> CN. . . . 98.00 <br /> TcReach - Sheet L: 150.00 ns:0.4000 p2yr: 1.40 s:0.0333 <br /> TcReach - Shallow L: 200.00 ks:3 .00 s:0.0080 <br /> PEAR RATE: 0.58 cfs VOL: 0.44 Ac-ft TIME: 490 min <br /> .���: �.�z»,.eo�. Page 6 <br />