PERMFILE100364

• Permit No: M1985203
• IBM Index Class Name: Permit File
• Doc Date: 12/3/1985
• Doc Name: 110 Permit Application
• Section_Exhibit Name: Index
• Media Type: D
• Archive: No

PUEBLO AREA, COLORADO
properties of the soils-Continued
65
Percentage less than 3 inches
passing sieve- Available Hydro-
Perms- water Reaction Salinity Shrink-s ell potential logic
__ ahility capacity soil
No. 4 No. ]0 No. 40 No. 200
group
(4.7 mm) (2.0 mm) (0.42 mm) (0.074 mm!
!n yn in dfmhayrnn
In pn hr o/roil yN of 95°C
RO-95 75-90 6.5-85 45-f,5 0.6-"_.U 0 OS 0 07 6 6-7.R <? Low.. .._.. -.
~ - C
50-GO 35 45 3U-40 '_5 40 0 0G 0 -^ 0 (17 0.09 7A S.4 C >'ludcrnte.
100 :r0 100 O.i -7.i
I a..-;:, U 0 ~ 0 U.16 U J9 G. 1.7.4 G7 Low -.-- .-- ----- B
100 90 100 .5-100 6U :III (1 (i ': 0 0 1G-0 "1 6 6 S 4 C: Ln u',
RS-l0U 75-90 40-65 25-35
----- 0.6 ?.0
- 0.03-0.13 7.3-8.0 <" Low_____ ____________ D

100
100
65-85
15-35 -
>20
0.07-0.12
6 6-7.3
<2
Low_ _ ___
____________
A
100 95-100 65-80 5-'LO > 20 0.05-0.10 6.6-7.8 G2 Low.
55-65 45-55 40-50 3515 0.06-0.2 0.11-0.18 6.6-7.3 <2 High_____ ____________ D
100 90-]00 60-85 30-45 2 0-6.0 0 I1-0.13 6.6-7.3 <2 Low______ ___________ B
100 90-100 65-90 30-50 6.0 °0 0.12-0,14 6.6-8.4 <'L Low.
100 90-100 50-70 15-30 > 20 0.06-0.11 7 4-8.4 <2 Low.
100 90-100 50-75 15-30 >''?0 U.09-0.11 6.6-7.3 <2 Low______ ___________ B
100 90-100 65-90 30-50 6.0-''?0 0.12-0,14 6.6-R 4 <2 Low.
]00 90-100 50-10 15-30 ''?0 0 OS-0.11 7.4-8.4 <2 Low.
60-80 60-75 355 20-30 6.0 ~0 0.07-0.09 6.1-7.3 <2 Low______ ___________ D
60-70 55-65 30-40 25-35 6 D-20 0.07-0.09 6 1-7.3 <2 Low.
100 100 90-100 70-90 0.6-2.0 0.19-0.21 7.4-7.8 <2 Low ______ ___________ B
100 100 90-100 70-95 0.2-0.6 0.19-0.2] 7.9-8 4 <2 Low.
100 100 90-100 70-90 0.2-0.6 0.16-0.21 7.9-8.4 <2 Low.
95-]00 95-100 90-100 70-90 0.2-0.6 O.19-0.21 6.6-7.3 2-8 Low_______ ___________ D
95-100 95-100 90-100 70-95 0,06-0.2 0 19-0.21 6.6-8.4 2-8 High.
saturation extract, in millimhos per centimeter at
25° C. Salinity affects the suitability of a soil for crops,
its stability when used as construction material, and
corrosiveness to metals and concrete.
Shrink-swell potential is the relative change in vol-
me of soil material to be expected with changes in
moisture content, that is, the extent to which the soil
shrinks as it dries out or swells when it gets wet. Ex-
tent of shrinking and swelling is influenced by the
amount and kind of clay in the soil. Shrinking and
swelling of soils cause much damage to building
foundations, roads, and other structures. A higla
shl•ink-smell potential indicates a hazard to the mainte-
nance of structures built in, on, or with material that
has this rating.
Hydrologic soil group classifies the soils into four
groups according to their infiltration and transmission
1•ates. The groups are designated (low 1•unoff poten-
tial), B, C, and D (high runoff po ential) (11 ).
Interpretations for the corrosivi y to uncoated steel
and concrete are not shown in table 5. Most soils in the
survey area have a high corrosivi to uncoated steel
pipe and a medium Corrosivity to c ncrete. Corrosivity
pertains to potential soil-induced c emical action that
dissolves or weakens uncoated ste or concrete. Rate
of corrosion of uncoated steel is ]ated to such soil
properties as drainage, texture, ota] acidity, and
electrical conductivity of the soil m terial. Corrosivity
to concrete is influenced mainly y the content of
sodium or magnesium sulfate, but Iso by sail texture
and acidity. Installations of uncoat d steel that inter-
sect soil boundaries or soil horizon are more suscep-
tible to corrosion than installation made entirely in
one kind of soil or in one soil horizo .