HomeMy WebLinkAboutPerc Test 02.27.2015February 27. 2015
Janckila Construction
Attn: Brett Byrnan
353 Goose Lane
Carbondale, Colorado 81623
(r f iii. 1! d_ wi o.
Job No. 115 06A
Subject; Percolation Testing. Proposed Residence, Lot IS -11. Aspen Glen,
Wildflower, Garfield County, Colorado
Dear Brett:
As requested. Hepworth - Pawlak Geotechnical. Inc., performed percolation testing at the
subject site. The work was done in accordance with our agreement for professional
services to you. dated February 25, 2015. We understand that surface runoff is proposed
to be disposed of in a drywell on the site.
.A profile boring was drilled on February 26. 2015 near the middle of the lot. The
subsoils exposed in the profile horina consisted of about foot of topsoil overlying 4'
feet pf sandy silty clay with gravel. Relatively dense silty sandy gravel with cobbles was
encountered below 5 feet down to the bottom of the boring at b';, feet. No free water was
obscrved in the boring and the soils were slightly moist to moist.
Percolation testing was conducted following drilling by a representative of Hepworth -
Pawlak Geotechnical, inc. The percolation test results are summarized on Table I.
Based on the subsurface conditions encountered and the percolation test results, the tested
area should be suitable for an infiltration disposal system. We assume that the drywell
will be based in the underlying gravel soils. The dryweIl should be located well away
from the house and the perforated sections should be no higher than 2 feet below lowest
adjacent interior grade (basement or crawispace grade). A professional civil enaineer
should design the runoff disposal system.
if you have any questions or need further assistance, please call our office.
Sincerely.
HEPWORTH - PAWLAK G.FtielEsQ14LICAL, INC.
.A
Daniel E. Hardin, P.E
UI II ksw r'Arlitolunt
���
attaci,3itent. Table 1 Suminary ercolation lest Results
'
CLIENT
PROJECT
, •
MounlianView
Iluddtebton-Berry Engineering& Testing, LLC
\ 640 While Avenue, Unit B
Grand junction, CO 81501
970-255-8005
970-255-6818
Construction Services LLC PROJECT
NAME
LOCATION
TEST PIT NUMBER TP -1
PAGE 1 OF 1
IS -11 Aspen Glen
NUMBER 01273-0007 PROJECT
Glenwood Springs
DATE
EXCAVATION
EXCAVATION
LOGGED
NOTES
STARTED
BY
101111 COMPLETED 1011113 GROUND
ELEVATION
WATER LEVELS:
TIME OF EXCAVATION
END OF EXCAVATION
EXCAVATION
TEST PIT SIZE
CONTRACTOR Client GROUND
dry
METHOD Mini-Excavalor AT
NWB CHECKED BY MAB AT
dry
AFTER
—-
o•
0.0
GRAPHIC
LOG
MATERIAL DESCRIPTION
SAMPLE TYPE
NUMBER
RECOVERY %
(ROD)
BLOW
COUNTS
(N VALUE)
rPOCKET PEN.
(ts)1
DRY UNIT WT.
(Pd)
MOISTURE
CONTENT (%)
ATTERBERG
LIMITS
FINES CONTENT
(%)
o
m2
JJ
F
o!2
57.1g
a
U M
No
Z
3-
_
1- .'^t
2.4
i 3
s.'s*Ii
i Y�
Sandy Lean CLAY with Organics (TOPSOIL), brown, moist
2.5
//J
%/ f
Sandy Lean CLAY (CL), brown, moist, slit[
GB1: Lab Classified
GB
1
7
27
18
9
68
_
5.0
,
OWE,
01,0
ere.*
0.
Iv
it .
, f
Clayey GRAVEL and COBBLES (go), brown, moist, dense
GB2: Fines Lab Classified
GB
2
10
28
19
9
64
_
_
7.5
e
,�4
i i
00.1
./f�
01,
.0
• '1
itJ I
_
Bottom of lest pit al 8.5 feet.
APPENDIX B
Laboratory Testing Results
Huddleston -Berry Eneineerine & Testing, LLC C,,. \ 640 White Avenue, Unil B
Grand Junction, CO 81501
970-2558005
-- r 970-255.4818
CLIENT MounlianView Conslruclian Services LLC
PROJECT NUMBER 01273-0007
_ a .0
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
U.S. SIEVE OPENING IN INCHES
GRAIN SIZE DISTRIBUTION
PROJECT NAME tS-11 Aspen Glen
PROJECT LOCATION Glenwood Springs
U.S. SIEVE NUMBERS
0 4 3 2 1.5 1 3/4 3 6 810 1410 20 30 40 50 60 100140200
•
•
•
•
•
HYDROMETER
•
•
•
•
•
•
•
•
•
100
COBBLES
10
GRAVEL
coarse
fine
1 0.1
GRAIN SIZE IN MILLIMETERS
coarse
SAND
medium ffne
0.01
SILT OR CLAY
0.001
Specimen Identification
Classification
LL
PL
PI
•
1>Q
TP -1, GB1 10113
TP -1, GB2 10/13
SANDY LEAN CLAY(CL)
SANDY LEAN CLAY(CL)
27
28
18
19
9
9
Specimen Identification
D100
D60
D30
D10
%Gravel
%Sand
%Silt 1 %Clay
•
TP -1, GB1 10/13
9.6
0.3
31.8
67.9
m
TP -1, GB2 10/13
12.5
2.4
33.4
64.2
,.,, Huddleston -Berry Engineering & Testing, LLC ATTERBERG LIMITS' RESULTS
• , 610 White Avenue, Unit 13
' nd luncliou, CO 81501
FB, 970-255-8005Grn
--- ate 970-255-6818
CLIENT MounllanView Construction Services LLC PROJECT NAME IS -11 Aspen Glen
PROJECT NUMBER 01273-0007 PROJECT LOCATION Glenwood Springs
60
CL
CH
50
P
L
A
•
5 40
T
1
C
1
T 30
Y
1
N
20
D
E
X
10
ill
CL -ML
,
ML
MH
0
0
20 40 60 80
LIQUID LIMIT
100
Specimen Identification
IL
PL
PI
#200
Classification
•
TP -1, GB1 10/1/2013
27
18
9
68
SANDY LEAN CLAY(CL)
1
TP -1, GB2 101112013
28
19
9
64
SANDY LEAN CLAY(CL)