PERMFILE51164

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 19 ALLEN MINE HYDROLOGIC BALANCE OF SURFACE RUNOFF
• Media Type: D
• Archive: No

~'
drology and Sedimentology of Surface Mined;
nds (C.T. Haan 6 B.J. Barfield, 1978)
Description ofaru Runoffcoeffieients
Business:
Downlownarps ....................... .............0.70 to 0.95
Nciyllborllood areas ..................... .............0.30 Io 0.70
Rc{idcntial:
Sin~le•family area ...................... .............0.30 to OSO
-lulti•uniu,dctachod .................... .............0.40 to 0.60
Multi•units, attached .................... .............O.GO l0 0.75
Residential (suburban) .........~............• .. .............0.25 to 0.40
Apansncnldwc0incarus ..................... .............O.SOIO 0.70
.,.......Ls6ht areas ............................ ........... .0.50 l0 0.80
Hcary area ........................... .............O.60 to 0.90
Parks, eemcteriet ............................ .............0.10 to 0.25
Playtrounds ................................ .............D.201o 0.35
Railroad yard area .......................... .............0.20 to 035
'nimprovcd arcat ........................... .............0.1010 0.30
Streets: ~ -- - '- -
Aspllaltic and concrete .................. .............0.70 l0 0.95
Brla ................................ .............D.7o to o.es
Rooh ....~ ................
~~•••~~~~••~~~•• .............0.75 l0 0.95
lawns; sandy soil:
'Flat. 2°m .............................. . . ...........0.05 to 0.10 •
Average, 2% l0 7% ...................... .............0.10 l0 0.15
Stccp, 7: ... ......................... .............0.15 to 0.20 .. -
Lawns; hcary soil:
Flat.2So .............................. .............0.13to 0.17
Average, 2% l0 7% ...................... .............0.18 to D.22
Slccp,7% ............................ .............0.2510 0.35
Rural Arras
Soil Texture
Topography
and Open Sandy Clay anJ 5111 TiGlll
Velcution ~ Loam Loam Cuy
Woodland
f1at0•S%{lope 0.10 0.30
Rolling S•10%slope 0.25 0.33
llilly 10.30%slope ~ 0.30 0.30
Pasture
Flat 0.10 0.30
Rollint 0.16 0.36
Ii111Y 0.22 0.42
..ulliralcd
•
Flat 1
0.30
0.50
° ~-
0.40
0.50
0.60
0.40
O.SS
0.60
(~ -- -i~ ~
Table 2.25 Retudance Coefficient. ~,
. ~ Surface c
Very smooth asphalt 0.007
Tu and land pavement 0.0073
Crushed date roofing paper 0.0082
Concrete 0.012
Tu and If1'aTCI pavement 0.0017
Closely clipped tod ~ ~ 0.046
Dense bluc~rau turf 0.060
I Tabic i.i0 nunolT Curve riumbcn for Seiecsed Ar(icuisuni, Suburban, and iirisan
land Use. (Antaedenl Moisture Condition II).

Y(YRDIDDIe i01L e•0.T
are use etsalma a ^ c o
n.lu..e•e a.na/..teaws rm..n•n.. s...ona v es ee rl
1 •lu •auernil•• tn•a•ne e7 it le el
rutwr v r•np a.N1 p.r u•e ltlm ee 79 e6 er
a..e em{Ialm ~ 61 l1 b
rLNwl {•e{ rmeltlm ]0 se 71 71
Y•N •r -enrt a•n4 ub •a W, rwr sw.r, m •u1cR IS eb 77 p
a••e ••.•rl/ a3 ss io n
oq.. srn•, a...,.. r.... a.lr .w.... •nre..l... Nr.
{••{ r••elllm, par •wo m 1]f w wn N ur •n• M el 71 ea
M1lr unelllmr {rwr a•.o •• ]DIN 7)/ •( u. vu 19 69 19 e1
Co~orld .ne a••Wn •rru less blrnl•ual a9 r7 11 9S
7Nnrtrbt elr trlrar Ilaf l•r.nlwl• h ae •1 qa
Mrleoalq,lr
NoY• let J•r a.nyr 11•Rrnlw•a/
tie •er. w s... {s n es ro rr
1/I w„ >e u n u a
In .:.. >e n v es es
a/r •en rs s1 to e0 es
l .•r. n u it 7v H
r.n{ r.rRl.{ ss., r..r.. ernn.r.. sr.l/ re re re re
\Mt. Me ANII
0.60 •~• r•„e .lu nrM •ne •1•n •w•n1/
1 1 1 1.--
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