HomeMy WebLinkAbout20002538.tiff GEOLOGIC EVALUATION
F,.)R A PROPOSED SUBDIVISION
IN THE NORTHWEST QUARTER OF
SECTION 4, T.5N., R.65 W.
WELD COUNTY. COLORADO
Prepared for
Chuck Carbon
340 East C Street
Greeley, Colorado 80631
June 17, 1999
Commission No.: 4887-01-01-01
Prepared By
FOUNDATION & SOILS ENGINEERING, INC.
5110 Granite Street, Suite D
Loveland, Colorado 80538
20C0 2538
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FOUNDATION Engineering,
AND SOILS Inc.
June 17, 1999
Commission No.: 4887-01-01-01
Mr. Chuck Carlson
340 East C Street
Greeley, Colorado 80631
Dear Mr. Carl tn:
The enclosed report presents the results of a geologic evaluation for ae proposed subdivision to be
located in the Northwest Quarter of Section 4, Township 5 North, Range 65 North, Weld County,
Colorado. We appreciate the opportunity to be of service to you on this project. If you have any
questions, please feel free to call.
Respectfully,
ty her—
Gary J. Higgins,
Geologist
Reviewed by:
4,FinleyThomas W. ley
Engineering Geologist
❑ ILL
5110 Granite Street, Suite D 'Loveland, Colorado 80538 •(970) 663-0138 .Fax(970) 663-1660
500 Kimbark Street, Suite 101 •Longmont, Colorado 80501 •(303) 702-0661 •Fax (303) 774-8413
TAKE OF CONTENTS
SCOPE I
SITE INVESTIGATION I
GEOLOGY
POTENTIAL GEOLOGIC HAZARDS AND RECOMMENDATIONS 2
SAND, GRAVEL AND QUARRY AGGREGATE RESOURCE 2
CONCLUSION 2
LIST OF REFERENCES 3
Geologic & Vicinity Map Figure 1
Sand, Gravel, & Quarry Aggregate Resources Figure 2
Soils Map Figure 3
SCOPE
The following report presents the results of our geologic evaluation for a proposed subdivision to
he located in the Northwest Quarter of Section 4,Township 5 North, Range 65 West of the 6th °rime
Meridian, Weld County, Colorado.
It is our understanding that the 17.6+ acre parcel is to be divided into six (6) residential lots of
approximately 2.5 acres each. The purpose of this investigation is to identify potential geologic
hazards and potential mineral resources which may conflict with the development intended The
conclusions and recommendations presented in this report are based upon the acquired field data.
review of the available literature, and previous experience with similar geologic conditions In this
area.
SITE DESCRIPTION
The site is located northeaL. of Greeley, on the southwest corner of the intersection of East C Street
and Balsam Avenue. The parcel consists of an agricultural field with a general,gradual to moderate
slope to the southwest. Concrete lined irrigation ditches are located along the east and north property
lines and two small gullies are in the south portion of the parcel.
SITE INVESTIGATION
The site was visually inspected on June 17, 1999. The locations of geologic features are approx nate
and should be considered only to the degree implied by he methods used to make those
measurements.
GEOLOGY
The proposed site lies in the Colorado Piedmont Section of the Great Plains Physiographic Pro vince.
The Colorado Piedmont is an elongated trough in the Great Plains, adjacent to the Front Range of
the Southern Rockies. The Colorado Piedmont was formed when uplift of the area in Miccene-
Eocene times (20 - 50 million years ago) produced an increase of stream erosion result.ng in
scouring next to the foothills and outlying areas. The Piedmont is bordered by the southern Rockies
to the west,Great Plains escarpment to the northeast, and Palmer Divide to the south. The boundary
of the eastern edge Colorado Piedmont is not well defined.
Structurally, the site lies in the Denver Basin, which is a thick accumulation of Paleozoic and
Mesozoic Era sediments involved with down warping in the basin area and uplift of the adjacent
highlands. It is our understanding that faulting has not taken place in the recent historic past n this
area. This area is classified as being in Seismic Zone 1 (Uniform Building Code- Chapter 2 ,
The site is overlain with surficial eolian and/or alluvial sandy soils. These soils consist primarily of
sand, silt, and gravel with anticipated thicknesses of five (5) feet or more. The Soil Conseriation
Service maps indicate the property is overlain with moderately well drained soils and the potential
for flooding is low. The SCS tables indicate that the soils may have slight limitations for plat went
of septic tank/a.bsorption fields and slight to moderate limitations for placement of shallow
foundations and basements.
1
The Cretaceous Laramie Formation underlies the surticial soils. The Laramie Formation consists
of silty shale with inter-bedded sandstones, clays and seams of coal. The thickness of the Laramie
Formation is in the order of several hundred feet in this area. Outcrops of the bedrock we c not
observed.
POTENTIAL GEOLOGIC HAZARDS AND RECOMMENDATIONS
The shales of the Laramie Formation and associated soils may be potentially expansive. Some of the
eolian (wind-blown) deposits may exhibit collapse when wetted under foundation loading The
effects of the potentially swelling and/or collapsible soil and rock can be minimized by c ueful
planning prior to construction at the site. A geotechnical investigation should be conducted a each
site to identify if these conditions exist.
The slopes along th, south portion of the property may in licate signs of minor slope movement in
the past. Small gulli s indicate a possible erosion potential along these slopes. These slopes sH e,ld
be avoided when choosing the building locations. Any overlot grading in these areas should he
carefully planned to minimize disturbance of the ground. Cleared areas should be re-vegeta!ed as
soon as practicable.
SAND, GRAVEL AND QUARRY AGGREGATE RESOURCE
The Colorado Geological Survey (CGS) describes this site as being in stream terrace deposit r; with
poor quality resources. Most, or all, of the known gravel pits in this area are located in the
plain deposits. A site specific analysis for sand and gravel resources was not conducted fur this
investigation. Based on these conditions and current mining practices, it is our opinion that it is not
currently feasible to extract sand and gravel for economical purposes at this site.
CONCLUSION
Based on the conditions observed and researched, there are no significant geologic hazards at this
time on the property. Geotechnical investigations are recommended for each building site to identify
potentially swelling,collapsible or compressible soils and/or bedrock strata.The potentially unstable
slopes along the south side of the property should be avoided when choosing the building locations.
The CGS describes the site as being located in stream terrace deposits with poor quality aggregate.
Our opinion is that the potential sand and gravel resources in this area may not meet quality
standards for local gravel pit operations. Based on these conditions and our observations. it is our
opinion that the development intended is compatible with the geologic conditions at the site
The data presented herein were collected to help determine the feasibility of this project.
Professional judgments on design alternatives and criteria are presented in this report. l'he;e are
based on evaluation of technical information gathered, partly on our understanding of the
characteristics of the development proposed, and partly on our experience with geologic conditions
in the area. We do not guarantee the performance of the project in any respect,only that our geologic
study and judgments rendered meet the standard of care of our profession.
2
•
LIST OF REFERENCES
Schwochow, S.D., Schroba R.R., and Wicklein, P.C., Atlas of Sand,Gravel,and Quarry Aggrc ate
Resources-Colorado Front Range Counties,Colorado Geological Survey,Special Publication 5-B,
I974.
I;ogers,W.P.Ladwig,L.R..,Hornbaker, 1.L., Schwochow,S.D.,Hart,S.S., Shelton,D.C., Scroggs,
D.L.,and Soule,J.M.,Guidelines and Criteria for Identification end Land-Use Controls of Geologic
Hazard and Mineral Resource Areas, Colorado Geological Survey, Special Publication 6, 11)74.
Shelton,David C. And Rogers, William P. Environmental and Engineering Geology of the Windsor
Study Area, Larimer and Weld Counties, Colorado, Colorado Geological Survey, Environmental
Geology 6, 1987.
Tweto, Ogden, Geologic Map of Colorado, US Geological Survey, 1979
Soil Survey of Weld County, Weld County, Colorado- Southern Part, USDA Soil Conservation
Service, 1980
3
Project No. 4.86-1-,01-r.-i9l-OI
VICINITY AND AF E4
GEOLOGIC MAP
7 _� �<, - lL
�' 1'1 20 v
0v I
� O• \ 1 --/-",1,.. 22
I _ ________„:„.„ .\_,-.. i
h ........ .. ,
30
X29 28 \ 27
-... y. :31
Itur 32 2l
3 34
4�
'' L�r177
l r.6,4+,
6 'j
3
,,
t:t
R,(,6 cs. P.,6,5,„...d
11\11KEY
Qvf- Quaternary valley-fill deposits
Of- Quaternary flood-plain deposits
<I- Cretaceous Laramie Formation, silty shales
orth
Seale I : 625O® eased on: GeolocGa Ma'
of Colorado - 1.1-S`*:sa
FOUNDATION 4 SOILS ENGINEERING FIGURE NO. 1
Project No. 4 31-a i-oI-01
SAND, GRAVEL 4 QUARRY
AGGREGATE RESOURCES MAF
I.real.,J?netxT. ,: --
J �1 ? � P 4 E A ✓r)
' a .- �j \ to
-.,
l mb
sr-1-0. 'r I1 'tot ..ti: 1 Q1J
34 c
jai \
\____,
32
� � ,
33 i' 34
a o. 1 Note: This valley rill,
j ?7 ancient Loot. Traa Cr4 s
r /'/
II S.• "" 1 .5 T2 I ?'ere potent'al as a zoa
sy a, "Ii t rrstes lTd 1's^^ 1ete1'
--' ./I � +^' I west becaxs .e of the :teb
I' ,� overbu
rden and '' o• a
,_
e nt1o, as lndltatr;A ,.y a
v pa♦
Zl�J.. I . , CJ ..w' C
� V n rL F 1' 2.N .t^_,
-'V� 9 I I / i• • ':`.w �X1 11 f7
Il_. I ry, �� 7 d. �
--,- K } t IlyT •,\ .. [3190 7 Y - "_
▪ 44.1,0
-grew-' 1. 7.A.
�� .� ▪ °°•
.�4.. ��W I j ' / l
( ' 0 '
�
¢_ I
.1�. * - ter- r: 1 _ \\ \., F 1
''- r _19. ail 3 9 *, 6 fa �ij
KEY
Landform
T- Stream trace deposits
1 esource classification
2 - Gravel .) significant fines, decomposed rock ,calciumcArlcocr.ft:.
ort1�
eased on: Atlas of Sand, G av ,.1, c .:rrLr,
kale I : 31500 Aggregate @esources, colc,ra;*; ? rc nt
mange Counties - CGS
FOUNDATION 4 SOILS ENGINEERING FIGU `lO. 2
Project No. 488"1-oi-0l-eep
SOILS MAP
:s 1
\(
t ,T32
J L 50 • 32 {e.1„4^ �I
#) �lJ { S\
-_ 1. r k, f a .s3er ?
P - / f r.7,:
F .. .. ,« <
3 {{
,� �.\
KEY
03- Ac:iuolls and Actuente, Gravelly substratum ill\j 41 10- Sarkard sandy loam (0-3% elopes)
32- Kim loam (1-3% slopes)
S0- ®taro sandy loam (0-1% slopes)
SS- Ustic Torriorhents (moderately steep)
orth
i : 24000 used on: Soil Survey or Udz•.d County
Colorado - USOA SC3
FOUNDATION 4 SOILS ENGINEERING FIGURE NO. 3
100 SOIL SURVEY
TABLE 6.--BUILDING SITE DEVELOPMENT
[Some of the terms used in this table to describe restrictive soil features are defined in the Clissary '
text for definitions of "slight," "moderate ," and "severe." Absence of an entry means sril w:is Mc'
rated]
Soil name and Shallow Dwellings Dwellings Small Lcc •1 rca s
map symbol excavations without with commercial and stree s
basements basements buildings
1 , 2. Severe: Moderate: Moderate: Moderate: Moderate:
Altvan cutbanks cave. shrink-swell . shrink-swell . shrink-swell . shrlo"-swe. ,
frost anti.
3':
Aquolls Severe: Severe: Severe: Severe: Severe
floods, floods, floods, floods, flocit,
wetness- wetness- wetness. wetness. .etress,
frost acts •
Aquents Severe: Severe: Severe: Severe: Severe
floods, floods, floods, floods, flocdr ,
wetness- wetness. wetness. wetness. wetress,
frost actin .
Y':
Aquolls Severe: Severe: Severe: Severe: Severe
floods, floods, floods, floods, floods,
wetness. wetness. wetness. wetness. wetress,
frost acti-
Aquepts Severe: Severe: Severe: Severe: Severe
floods , floods, floods, floods, . :d: 1 ,
wetness. wetness. wetness, wetness.
fro_ .. acti
5 - Slight Moderate: Moderate: Moderate: v c-lera e:
Ascalon low strength. low strength. low strength. trust. acti: ,
low s rengt• .
6, 7. Slight Moderate: Moderate: Moderate: "adera•e:
Ascalon low strength. low strength. slope, frost actic ,
low strength. :ow s' rengt
8, 9. Slight Moderate: Moderate: Moderate: "c.der3'e:
Ascalon low strength. low strength. low strength. frost actin ,
low s rent -
10 Severe: Severe: Severe: Severe: Severe
Bankard cutbanks cave, floods- floods- floods. floc t .
floods.
11 , 12 Slight Slight Slight --- Slight •cdern'e:
Greaser fros', netts .
13—.- Sever Moderate: Moderate: Severe: ' '1rr ' c: •
Cascajo cuth nks cave, slope. slope. slope. slot-•
small stones.
14, 15 Slight Slight Slight --.--:Slight . . v, .l er a-•. .
Colby lo- s rengt.
16, 17 Slight Slight Slight ---I Moderate: "' der ac:
Colby slope. :ow s- rengt
18':
Colby Slight Slight Slight -.--I Moderate: `edera' e:
slope, low s' ren,,t
Adena Slight Moderate: Moderate: Moderate:
low strength. low strength . low strength ,
slope .
See footnote at end of table.
I
Wt LD COUNTY, COLORADO, SOUTHERN PART { 31
TABLE 6.--PIJILDLNG SITE DEVELOPMENT--Continued
Soil name and Shallow flwellings [wettings Small I sra -cads
map symbol excavations without with commercial Ind t-Bets
basements tasements buildinns
19 Moderate: Severe: Severe: Severe:
Colombo floods. floods. floods. floods. flood:;
200 Slight Moderate: Moderate: Moderate: Moderato:
Colombo low strength. low strength. low strength. Low st ength.
frost ,orlon .
21 , 22 Severe: Moderate: Slight Moderate: Severe:
Dacono cutbanks cave. low strength, low strength , shrink swell ,
shrink-swell. shrink-swell .. low st ength .
33, 24 - - Slight-- -- Moderate: Moderate: Moderate: mode-at .
Fort Collins low strength. low strength , low strength . _ ow s` cogth .
shrink-swell .
25, 26 - - Severe: Severe: Severe: Severe: Severe :
Haverson floods. floods. floods. floods. f'.os.ts
2-J 28-_---- Severe: Severe: Severe: Severe: Severe:
Heldt too clayey. shrink-swell , shrank-swell , shrink-swell , shrink -dwell .
low strength. low strength. low strength. low strength.
29, 30------- Slight---- Moderate: Moderate: Moderate: Moderate :
julesburg low strength. low strength. low strength. low st ength,
frost ection .
31 , 32-.._-_- Slight--- - Moderate: Moderate: Moderate: Moderate
Kim low strength. low strength. low strength. tow st ength.
33 , 34 - - .Slight-- - Moderate: Moderate: Moderate. ^'o :erat
Kim low strength . low strength. low strength , st , hgth
slope.
lJ'.
Lou ;Severe: Severe: Severe: Severe: :Severe:
wetness, wetness, wetness, wetness, wetnes e
' outbanks cave, floods. floods. floods.
9oel--- ' ;Severe: Severe: ISeve^e: Severe: 'Severe:
wetness, wetness, wetness, ' wetness, ' wetness
floods, floods. ' floods, floods. : floods
cutbanks cave .
36':
Severe: evere:
Midway Stoorcl Severe: Severe:
too clayey. shrink-swell , shrink-swell , slope, sn^Lek-swell .
low strength. low strength. shrink-swell , Is'- strength.
low strength.
Shingle Severe: Severe: Severe: Severe: Severe:
depth to rock. depth to rock. depth to rock. depth to rock lerth k, r:ck
slope.
3 Severe: Moderate: Severe: Moderate: molerard
`le Lson depth to rock. depth to rock, depth to rock. deplow sh ta rock ,
strength. "r r'n�t
low strength.
38 - Severe: Moderate: Severe: moderate: ''o1-rat'r
Nelson depth to rock. depth to rock, depth to rock. slope, ie:t' rvck
low strength. depth to rock , Les, st-^ngth.
low strength .
39, 40, 41 , 42, Seders.
Moderate: Severe: Severe: Severe:
Nunn too clayey. shrink-swell , shrink-swell , shrink-swell , arr Ink- -we_l ,
low strength. low strength. low strength. I:.. ;r "n
gth
See footnote at end of table .
A __
________
•
102 SOIL SURVEY
TABLE 5.--BUILDING SITE DEVELOPMENT--Continued
Soil name and Shallow Dwellings Dwellings Small Loral rod s
nip symbol excavations without with commercial an : streets
basements basements buildings
_�—
Slight ---;Slight Slight ---;Slight Moderate:
Olney low etrengtr .
45--------- Slight ----;Slight - Slight ---;Moderate: Moderate:
Olney ; slope. low etrengt
46, 47--- --- Slight ----;Slight Slight ---;Slight - Moderate:
Olney low ;trengt,
48 Slight. ;Slight S1 -ght --- Moderate: Moderate:
Olney slope. :low strength
49--------- Severe: ;Slight Slight - -- Slight Sltgh .
Osgood cutbanks cave .
50, 55. - 'Slight. ---- ;Slight SI:.ght -- Slight Sl igh• .
Otero
52, 53 Slight ---;Slight SL;ght - -- Moderate: Sligh' .
Otero slope.
54 Slight - ;Severe: Severe: Severe: :Moderate:
Paoli ; floods. floods. floods- 1 low strength
frost action
55 Slight ;Slight Slight Slight :Moderate:
Paoli ' low t -ength
lros' .ctic,
55 Moderate, ;Moderate: Mocerate: Moderate: Seven :
Renohill depth to rock, low strength, low strength, low strength, low ti- ength
too clayey. shrink-swell- depth to rock, ; shrink-swell. ' shrir k •swel;
shrink-swell.
57 Moderate: Moderate: Moderate: Moderate: '.Severe :
Renohill depth to rock, low strength, low strength, slope, low strength
too clayey. shrink-swell- depth to rock, low strength, . shrirk-swell
shrink-swell. shrink-swell.
58, 59 Severe: Severe: Severe: Severe: Severe :
Shingle depth to rock. depth to rock. depth to rock. depth to rock . depth -.o roe .
60':
Shingle Severe: Severe: Severe: Severe: Severe:
depth to rock. depth to rock. depth to rock. depth to rock. depth ho roc- .
•
Renohill Moderate: Moderate: Moderate: Moderate: 'Severe :
depth. to rock, low strength, low strength, slope, low s tre th
too clayey. shrink-swell . depth to rock, low strength, shrlr-c-swell
shrink-swell. shrink-swell .
Si----- Moderate: Moderate: Moderate: Severe: Mocerat .
Tassel depth to rock. ; depth to rock. depth to rock. slope. depth o roc _
62---- Severe: !Moderate: ,evere: Moderate: Moderacv:
Terry depth to rock. depth to rock. depth to rock, depth to rock. depth ,o roc. .
63 - - Severe: Moderate: Severe: Moderate: ;Moderate :
Terry depth to rock . depth to -ock. depth to rock, depth to rock, : depth to rocs .
slope.
64--------. Moderate: Moderate: Moderate: Moderate: Moderat :
Thedalund depth to rock. low strength. depth to rock. low strength. : low Strength
55----.---- Moderate: ;Moderate: Moderate: Moderate: :Moderate:
Thedalund depth to rock . ' low stren: th. depth to rock. low strength , ' low strength
slope. ,
See footnote at end of table.
WELD COUNTY, COLORADO, SOUTHERN PART 103
TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
Soil same and Shallow Dwellings
Dwellings Small Local roads
with commerc Sal and streets
map symbol excavations without
basements basements buildings
_ __
T
66, 67--------
---- Moderate: Severe: Severe: Severe: :Severe:
Ulm too clayey. shrink-swell . shrink-swell . shrink-swell. low strength,
shrink-swell.
Moderate: Moderate: :Moderate:
68'
U .. Severe: . slope. slope. ; slope .
stic small stones, slope. P
Torriorthents cutbanks cave.
Slight Slight ---:Slight .
69 Severe: Slight ---
Valent cutbanks cave.
70 Severe'.: Slight Slight Moderate: S1 -P,rt -
Valent cutbanks cave. slope.
71'': ,Slight '.Moderate: ;SL Chn. .
Valent Severe: Slight. g cutbanks cave. slope.
;Severe: :Severe: :Severe:
Loup1S Severe: IS Severe: : wetness, : wetness
wetness, I wetness, wetness,
cutbanks cave. floods. ; floods. : floods.
Slight. :Slight ----- :Moderate
7V- .. ,Slight--.. Slight low str, nith.
Vona
Slight Slight Moderate: Moderate
73, 74 :Slight-- g - slope. low sir 'nit h.
Vona
Sli ht 'Mo't`et"
75, 7g__.___. -ISl-:ght--- Slight-_-.________ Slight K
Vona
Slight Moderate: More-ate
:Slight--.. Slight 6 slope. low str,-ith.
Vona
78, 79_..___. Slight--- Moderate: Moderate: Moderate: mole-ate
Weld low strength, low strength, low strength, low strergth,
shrink-swell . shrink-swell . shrink-swell . `hrin - 'welt'
;W .. Slight Moderate:
;Moderate: Moderate: mole-ate .
Weld low nk-swell, low strength, low strength , :ow shroncto ,
sh Wink-swell ,
shrink-swell . l shrink-Buelll. shrink-swell . :rest a '' ion .
81' 82•: ,Moderate: Moderate:( Moderate .
Wiley Slight Moderate: ' .
low strength, low strength, low strength , o sire'.gth,
shrink-swell . ; shrink-swell. I shrink-swell. Berl ink- e+ell .
Sligtt .Slight___.. Moderate .
Colby Slight Slight o'w stye qt^..
330:
Wiley Slight- Moderate: Mod e.r ate: :Moderate: Mode, st' -
- ?
low strength, low strength, low strength . � .
shrink-swell . shr':nk-Buell . shoop 3hr -n c'. s . s.el1.
th,
ink-swell .
Slight Moderate: Moderate
Colby- -. S1.18ht_... -- Slight slope. :ow et' e.,Cth .
% See map unit description for the composition and beharlor of the nap unit.
4
104 SOIL SURVEY
TABLE 7.--SANITA A7 FACILITIES
[Some of the terms used in this table to describe restrictive soil features are define' it _ e 1 .s .ary
text for definitions of "slight," "moderate ," "good ,' "fair ," and other terms used is rate s. 1 '.
Absence of an entry means soil was not rated]
T
Sail name and Septic tank Sewage lagoon Trench Area : 't,i , y c-_ - I
map symbol absorption areas sanitary sanitary fo - Land'
fields landfill landfill
1 , 2-----.- -- Slight Severe: Severe: Slight - Fair
Altvan seepage. l seepage. th:- Layer
3e:
Aquolls- --- Severe: Severe: Severe: Severe: "sor
floods, floods, floods, wetness. wet ess .
wetness. wetness. wetness.
Aquelts -- Severe: Severe: Severe: Severe Poor
floods, floods floods, wetne-.s.
wetness. wetner. . wetness.
41:
Aquolls -- Severe: Severe: Severe: Severe: 'oor
floods, floods, floods , wetness. wetess.
wetness. wetness. wetness.
Aquepts- ----- Severe: Severe: Severe: Severe: .Poo-
floods, floods , floods, wetness. wet 'ess.
wetness. wetness. wetness.
5, 6-.___._ .-- Slight Severe: Severe: Severe: ' lord
Ascalon seepage. seepage. seepage .
7 - Slight Severe: Severe: Severe: loci
Ascalon slope , seepage. seepage.
seepage.
8, 9- - Slight Severe: Severe: Severe: '.lood .
Ascalon seepage. seepage. seepage.
10-_.. Severe: Severe: Severe: Severe: : Fair:
Bankard floods. floods , floods , floods. too Sandy
seepage. , seepage.
11 , 12 Slight Severe: Severe: Severe: ;loon
Bresser seepage. seepage. seepage.
13--- Moderate: Severe: Severe: ',Severe: :Poor .
Cascajo slope . slope , seepage. seepage. sma.1 stop
S .
seepage,
small stones.
14, IS, 16 Slight Moderate: Slight 'Slight --ICood .
Colby seepa e.
17-_-- ;Slight Severe: Slight ----- Slight :rood
Colby slope .
18A:
Colby Slight Severe: Slight ,Slight oor
slope.
Adena - Moderate: ;Moderate: Slight Slight - floor
percs slowly. : seepage,
slope.
19--. Moderate: :Severe: Moderate: Moderate. ' oor .
Colombo floods. : floods. floods. floods.
20 Slight :Moderate: Slight ---- Slightour -
Colombo : slope,
seepage.
See footnote at end of table.
Wt..,D COUNTY, COLORADO, SOUTHERN PAR1 105
TABLE 7.--SANITARY FACILITIES--Continued
r .—
Soil name and Septic tank Sewage lagoon Trench Area Dalli cover
map symbol absorption areas sanitary sanitary for lar.l fill
fields landfill landfill
Jr___ - ...
21 , 22 Severe: Severe: :Severe: :Slight Fair:
Dacono I percs slowly. seepage. : seepage. too clayey
23 Moderate: Moderate: :Slight -- Slight Good.
Fort Collins percs slowly. seepage.
24 Moderate: Moderate: Slight -- Slight Good.
Fort Collins percs slowly. seepage,
slope.
25, 26 - Severe: Severe: Severe: Severe: Good .
1averso,, floods. floods. floods. floods.
27, 2R - Severe: Moderate: Severe: Slight Poo-:
Heldt percs slowly. slope. too clayey. 1,O clayey
29, 30 - -- = ight-.--- Severe: Severe: Severe: G :od.
Julesburg seepage. set age. seepage.
31 .---- -- Slight- --- Moderate: Slight -- Slight Good.
Kim seepage.
32., 33------ Slight-. --- Moderate: Slight -- Slight Good.
Kim seepage,
slope .
34.. Slight- Severe: Slight --- Slight Good.
Kim slope .
35" :
soup--- ---- Severe: Severe' Severe: Severe: Poo':
wetness, wetness, wetness, wetness, weties .
floods. seepage, floods , floods,
floods. seepage. seepage.
Boel Severe: Severe: Severe: Severe: Poor:
wetness , wetness, wetness , wetness, too sa:dy.
floods. seepage, floods, floods.
floods. seepage.
35":
Midway . Severe: :Severe: Severe: Moderate: :Poo^:
percs slowly, I depth to rock, depth to rock, slope. too clayey,
depth to rock. I slope. too clayey. thin layer .
Shingle Severe: I Severe: Severe: Moderate: Severe:
depth to rock. I slope, depth to rock. slope. thin layer.
depth to rock.
37, 33------ Severe: :Severe: Severe: Severe: :Fair:
Nelson depth to rock. I depth to rock, depth to rock, I seepage. thin 1eyer.
seepage. seepage. -
3q. • Severe: :Moderate: Slight Slight Fair:
loon pees slowly. : excess humus. ! tot cl ',yey.
4D._ .___. __vere: Moderate: Slight Slight Fair:
Nunn percs slowly. excess humus, too clayey.
slope
ul. Severer Moderate: Slight Slight - :Fair:
Munn percs slowly. excess humus. I too clayey.
12. Severe: Moderate: Slight Slight :Fair:
Nunn pens slowly. excess humus, I too clayey.
slope.
See footnote at end of table .
•
•
106 SOIL SURVEY
TABLE 7. --SANITARY FACILITIES--Continued
na nn and r
T _
Area Septic tank Sewage lagoon Trench Sly cod.rap symbol a05orptiJO areas sanitary sanitary fo �r ,
.andf.
fields - landfill landfill
'"---- ----- Severe: Moderate: Slight ---- Slight----- - Fair
.du„,n percs slowly. excess humus. too clayey
44 , 45, 46, 47 , 48-- Slight - Severe: Slight Slight GoodOlney .
seepage.
49 Slight -.--_-;Severe: Severe: Severe: Fair:
Osgood seepage. seepage. seepage. too s.,ndy.
50, " , 52 :tight Severe: Slight Slight Ocod,
Otero seepage.
53 Slight Severe: Slight Slight----.-----._- ::cod.
-Piero slope,
seepage.
54----- Slight - Severe: Severe: Severe: god_
•
Paoli seepage. seepage. seepage.
i
55---- Slight Severe: Severe: Severe: C,>od. 1
Paoli seepage seepage. seepage. {
56, 5 ---. - Severe: Severe: Severe: Slight Fair: f
Renohlll percs slowly, depth to rock. iepth to rock.
too layer,
depth to rock. Coin layer.
!i8, 59 -- Severe: Severe: Severe: Slight - ,Poor
Shingle depth to rock. depth to rock depth to roc e. : h,,, 1 ever
604 :
S:^_n -e --- 'Severe: Severe: .Severe: Slight-- Poor:
depth to rock. depth to rock. depth to rocs . Ihir _dyer.
C
Rerohi 11 Severe: Severe: Severe: Slight :Fair:
percs slowly, depth to rock. cepth to rock. too clayey,
depth to rock. thin layer.
5i Severe: Severe: Severe: Severe: Poor:
Tassel depth to rock. depth to rock, depth to rock , seepage. thin layer,
seepage, seepage. area reclaim
slope.
6?, 63- Severe: Severe: Severe: Slight ',Fair:
Terry dept- to rock. depth to rock, depth to rock. ; Chin .,ayer ,
seepage. , area declaim.
64, 55-- Severe: Severe: Severe: Slight -- -;Fair:
Thedal.ond depth to rock. ; depth to rock. depth to rock. ' thin :ayer.
56 c vere: ;Slight ;Moderate:
Jim „errs slowly. too clayey. I do c_ayey.
57 - 'Severe: Moderate: Moderate: Y�e Slight----
: Ftot,lm : pert- slowly. s :,pee t ,o ciayey. �, c aiey.
58' Moderate: `o -c: Severe: Severe: Loo-:
Ustic -orr'lorthents: slope. seepage, seepage. too sandy,
or stones. .nn sandy. small stones
59, 70 ;Slight Severe: Severe: Severe: a
talent to
..:.pare. too sandy, seep at: too sandy.
seepage.
Sit.
Valens- ;Slight Severe: Severe: Poor :
ten sandy, seer-, '.. tnc sooty.
seepage.
- . See footnote at end of table .
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