213-026A_Painted_Hills_Phase_2_Geotechnical_ReportIPEC
Inland Pacific Engineering Company
Geotechnical Engineering and Consulting
P.O. Box 1566, Veradale, WA 99037
Phone 509-209-6262
July 23, 2015
Project No. 2013-026A
NAI Black
c/o Mr. Bryan Walker
107 South Howard
Suite 500
Spokane, WA 99201
Re: Geotechnical Evaluation Phase 2
Painted Hills Golf Course Property
4403 South Dishman-Mica Road
Spokane Valley, WA
Dear Mr. Walker:
As you authorized, we have completed the Phase 2 geotechnical evaluation for the Painted Hills
Golf Course property at the above-referenced site in Spokane Valley, Washington. The purpose
of the Phase 2 evaluation is to assess subsurface soil and groundwater conditions to assist your
civil engineer, Whipple Consulting Engineers, Inc. (WCE) in evaluating stormwater
management alternatives relative to potential future development. This report summarizes the
results of our field investigation, laboratory testing, engineering analyses, and our opinions and
recommendations for stormwater management.
PROJECT DESCRIPTION
We understand that the proposed project may consist of a residential development. The site consists
of 91 acres currently developed as a golf course. We have assumed that stormwater runoff will be
treated using drywells and/or gravel galleries for subsurface infiltration. This Phase 2 evaluation is
intended to identify areas where subsurface infiltration of stormwater may be feasible due to the
presence of suitable soils at depth.
Phase 2 Geotechnical Evaluation Project No. 2013-026A
Painted Hills Golf Course Property Parcel No. 45344.9108
Spokane Valley, WA July 23, 2015
Inland Pacific Engineering Company Page 2
AVAILABLE INFORMATION
We were provided a topographic survey for the project site by WCE. This topographic survey
showed the existing roadways, existing structures, property lines, and existing ground surface
elevation contours. This plan was prepared by WCE and was dated November 7, 2013. The site
was used as a golf course prior to our evaluation. The site is relatively level with some elevated golf
greens and excavated areas for water hazards. The site is primarily grass-covered with scattered
trees along the fairways and pine trees in the undeveloped area to the northwest. The clubhouse
building is present at the southwest corner.
In addition, we performed a preliminary geotechnical evaluation for the property in December 2013.
The results of that evaluation, along with our opinions and recommendations, are summarized in our
Preliminary Geotechnical Evaluation dated December 31, 2013.
We also performed a geotechnical evaluation for certification of the existing levee along Chester
Creek in April 2014. The results of that evaluation are summarized in our Geotechnical Evaluation
dated February 12, 2015.
FIELD EVALUATION
Procedures
A geotechnical engineer from Inland Pacific Engineering Company (IPEC) observed the drilling of
10 penetration test borings at the site. The borings were drilled between July 1 and 13, 2015 using a
truck-mounted drill operated by an independent firm working under subcontract to IPEC. A
geotechnical engineer from IPEC observed the borings and logged the surface and subsurface
conditions. After we logged the borings, they were abandoned in accordance with state
requirements. Ground surface elevations at the borings were provided by WCE.
The soils encountered in the borings were visually and manually classified in the field by our field
personnel in accordance with ASTM D 2488, “Description and Identification of Soils (Visual-
Manual Procedures)”. The samples were returned to our facility for review of the classification by a
geotechnical engineer and laboratory testing.
Soils Encountered
In general, the borings encountered 1 to 3 feet of topsoil at the surface. However, Borings B-4 and
B-5 encountered “possible fill” in the upper 6 feet (it was considered “possible fill” because it did
not appear to be native soil, but no indicator, such as buried topsoil, debris, etc., was found to
confirm our opinion). Below the topsoil or “possible fill”, the borings generally encountered
alluvial lean clay, silty to clayey sand, and poorly graded sands to depths ranging from 6 to 21 feet,
but were typically in the upper 10 to 12 feet. Below the fill, topsoil, and alluvial soils, the borings
encountered glacially deposited sands to their termination depths.
Phase 2 Geotechnical Evaluation Project No. 2013-026A
Painted Hills Golf Course Property Parcel No. 45344.9108
Spokane Valley, WA July 23, 2015
Inland Pacific Engineering Company Page 3
Penetration resistances (N-values) in the “possible fill” were 9 and 16 blows per foot (BPF).
Penetration resistances in the sands ranged from 3 to 62 BPF and averaged 26 BPF, indicating that
these soils were very loose to very dense, but were typically medium dense. A penetration
resistance of 14 BPF was recorded in the clay indicating that this soil was stiff in consistency.
Geologic maps indicate the soils in this area consist primarily of alluvial and/or glacially
deposited silts, clays, sands, and gravels. According to the Soil Survey of Spokane County, the
site soils are classified by the Natural Resource Conservation Service (NRCS) as Hardesty ashy
silt loam, Narcisse silt loam, Endoaquolls and Fluvaquents, Phoebe ashy sandy loam, and Urban
land-Springdale disturbed complex. The native soils encountered in the borings were consistent
with the NRCS data.
Groundwater was encountered in all the borings at depths ranging from 11 to 47 feet. The
following table summarizes the groundwater depths and approximate elevations.
Boring Number Depth to Groundwater
(feet)
Approximate
Groundwater Elevation
B-1 36 1970
B-2 30 1976
B-3 47 1960
B-4 31 1975
B-5 46 1962
B-6 28 1981
B-7 31 1977
B-8 36 1973
B-9 11 2000
B-10 27 1981
The observed water levels indicate that the groundwater levels drop generally from south to north
with higher levels near Chester Creek. These water levels are generally consistent with the
observed levels in the borings performed on the Chester Creek levee and is consistent with our
opinion that this portion of the creek is the beginning of the recharge section as evidenced by the
typical lack of water in the creek further downstream along with dropping groundwater levels away
from the creek. Fluctuations in the groundwater level may occur due to rainfall, flooding, irrigation,
spring thaw and other seasonal and annual factors not evident at the time the observations were
made.
FIGURE 1
Site Location Map
Project No. 2013-026A
July 23, 2015 Painted Hills Phase 2
4403 South Dishman-Mica Road
Spokane Valley, WA
FIGURE 2
NRCS Map
Project No. 2013-026A
July 23, 2015 Painted Hills Phase 2
4403 South Dishman-Mica Road
Spokane Valley, WA
FIGURE 3
Boring Location Map
Project No. 2013-026A
July 23, 2015 Painted Hills Phase 2
4403 South Dishman-Mica Road
Spokane Valley, WA
SS
SS
SS
SS
SS
SS
6-8
(14)
13-12
(25)
17-14(31)
16-15(31)
10-10
(20)
11-12
(23)
(ML) SILT, with roots, dark brown, moist.
(Topsoil)
(CL) LEAN CLAY, brown, wet, stiff.(Alluvium)
(SP) POORLY GRADED SAND with GRAVEL, medium to coarsegrained, brown, moist, medium dense to dense.
(Glacial Outwash)
(SP) POORLY GRADED SAND, fine to medium grained, a traceof Gravel, brown, moist to 36', then water-bearing, medium dense
to dense.(Glacial Outwash)
NOTES
GROUND ELEVATION 2006 ft
LOGGED BY PTN
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/2/15 COMPLETED 7/2/15
AT TIME OF DRILLING --- Not encountered
AT END OF DRILLING 36.00 ft / Elev 1970.00 ft
AFTER DRILLING --- Not encountered
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-1
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
13-15(28)
11-13(24)
17-21
(38)
8-8
(16)
(SP) POORLY GRADED SAND, fine to medium grained, a trace
of Gravel, brown, moist to 36', then water-bearing, medium denseto dense.(Glacial Outwash) (continued)
(SM) SILTY SAND, very fine to fine grained, brown, wet, mediumdense.(Alluvium)
End of boring.
Groundwater not encountered with 49' of hollow-stem auger in theground.
Groundwater at 36' immediately after withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-1
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
16-14
(30)
6-8
(14)
9-8(17)
7-9(16)
9-9
(18)
10-15
(25)
7 4
(SM) SILTY SAND, fine to medium grained, with roots, dark
brown, moist.(Topsoil)
(SM) SILTY SAND, fine to coarse grained, a trace of Gravel,brown, moist, medium dense.
(Glacial Outwash)
(SW) WELL GRADED SAND with GRAVEL, medium to coarsegrained, brown, moist to 30'. then water-bearing, medium dense to
very dense.(Glacial Outwash)
NOTES
GROUND ELEVATION 2005.9 ft
LOGGED BY SLN
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/10/15 COMPLETED 7/13/15
AT TIME OF DRILLING 30.00 ft / Elev 1975.90 ft
AT END OF DRILLING 39.00 ft / Elev 1966.90 ft
AFTER DRILLING --- Not encountered (cave-in)
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-2
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
31-18(49)
25-19(44)
29-26
(55)
22-16
(38)
(SW) WELL GRADED SAND with GRAVEL, medium to coarse
grained, brown, moist to 30'. then water-bearing, medium dense tovery dense.(Glacial Outwash) (continued)
End of boring.
Groundwater at 30' with 34' of hollow-stem auger in the ground.
Groundwater at 39' with 49' of hollow-stem auger in the ground 3days later.
Groundwater not encountered to cave-in depth of 27' immediatelyafter withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-2
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
3-3
(6)
7-8
(15)
9-12(21)
24-27(51)
14-8
(22)
8-13
(21)
(SM) SILTY SAND, fine to medium grained, with roots, dark
brown, moist.(Topsoil)
(SC) CLAYEY SAND, fine to medium grained, dark brown to
brown, moist to wet, loose to medium dense.(Alluvium)
(SP) POORLY GRADED SAND, medium to coarse grained, atrace of Gravel, brown, moist, medium dense.
(Glacial Outwash)
(SP) POORLY GRADED SAND, fine to medium grained, a traceof Gravel, brown, water-bearing, medium dense.
(Glacial Outwash)
NOTES
GROUND ELEVATION 2007 ft
LOGGED BY PTN
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/2/15 COMPLETED 7/2/15
AT TIME OF DRILLING --- Not encountered
AT END OF DRILLING 47.00 ft / Elev 1960.00 ft
AFTER DRILLING --- Not encountered (cave-in)
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-3
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
16-16(32)
15-14(29)
29-23
(52)
21-20
(41)
(SP) POORLY GRADED SAND,fine grained, brown, moist, dense
to medium dense.(Glacial Outwash)
(SP) POORLY GRADED SAND with GRAVEL, medium to coarse
grained, with seams of Silty Sand, brown, moist to water-bearing,very dense to dense.(Glacial Outwash)
End of boring.
Groundwater at 47' with 49' of hollow-stem auger in the ground.
Groundwater not encountered to cave-in depth of 19' immediatelyafter withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-3
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
7-9
(16)
5-5
(10)
11-13(24)
3-2(5)
7-7
(14)
6-9
(15)
10 9
(SM) SILTY SAND, fine grained, with roots, dark brown, moist.
(Topsoil)
(SC-SM) SILTY CLAYEY SAND, fine grained, brown, moist.(Possible Fille)
(SC) CLAYEY SAND, fine to medium grained, with seams of LeanClay, brown, moist to wet, loose.
(Alluvium)
(SW-SM) WELL GRADED SAND with SILT, medium to coarsegrained, brown, moist, medium dense.
(Alluvium)
(SM) SILTY SAND, very fine to fine grained, with seams of Clayey
Sand, brown, wet, loose.(Alluvium)
(SP) POORLY GRADED SAND, medium to coarse grained,brown, moist to 31', then water-bearing, medium dense to verydense.
(Glacial Outwash)
NOTES
GROUND ELEVATION 2006.1 ft
LOGGED BY DD
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/6/15 COMPLETED 7/6/15
AT TIME OF DRILLING 31.00 ft / Elev 1975.10 ft
AT END OF DRILLING --- Not encountered (cave-in)
AFTER DRILLING 45.00 ft / Elev 1961.10 ft
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-4
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
12-16(28)
50
4-11
(15)
23-35
(58)
(SP) POORLY GRADED SAND, medium to coarse grained,
brown, moist to 31', then water-bearing, medium dense to verydense.(Glacial Outwash) (continued)
End of boring.
Groundwater at 31' with 34' of hollow-stem auger in the ground.
Groundwater at 45' with 49' of hollow-stem auger in the ground 3days later.
Groundwater not encountered to cave-in depth of 30' immediatelyafter withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-4
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
4-5
(9)
1-2
(3)
1-8(9)
8-11(19)
9-10
(19)
16-21
(37)
17 7
(SM) SILTY SAND, fine grained, with roots, dark brown, moist.
(Topsoil)
(SM) SILTY SAND, fine grained, brown, moist.(Possible Fill)
(SC) CLAYEY SAND, fine grained, brown, moist, very loose.(Alluvium)
(SP-SM) POORLY GRADED SAND with SILT, medium to coarse
grained, a trace of Gravel, brown, moist, loose to medium dense.(Glacial Outwash)
(SP) POORLY GRADED SAND, medium to coarse grained,brown, moist to 46', then water-bearing, loose to very deense.
(Glacial Outwash)
NOTES
GROUND ELEVATION 2008.1 ft
LOGGED BY DD
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/1/15 COMPLETED 7/1/15
AT TIME OF DRILLING --- Not encountered
AT END OF DRILLING 46.00 ft / Elev 1962.10 ft
AFTER DRILLING --- Not encountered
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-5
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
14-15(29)
19-22(41)
15-17
(32)
27-35
(62)
(SP) POORLY GRADED SAND, medium to coarse grained,
brown, moist to 46', then water-bearing, loose to very deense.(Glacial Outwash) (continued)
End of boring.
Groundwater at 46' with 49' of hollow-stem auger in the ground.
Groundwater not encountered immediately after withdrawal of theauger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-5
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
6-7
(13)
7-7
(14)
5-10(15)
6-7(13)
8-11
(19)
10-11
(21)
15 6
(SM) SILTY SAND, fine to medium grained, with roots, dark
brown, moist.(Topsoil)
(SM) SILTY SAND, fine grained, with seams of Clayey Sand,
brown, moist, medium dense.(Alluvium)
(SP-SM) POORLY GRADED SAND with SILT, medium to coarse
grained, a trace of Gravel, brown, moist, loose to medium dense.(Glacial Outwash)
(SP) POORLY GRADED SAND, medium to coarse grained,brown, moist to 25', then water-bearing, medium dense to dense.
(Glacial Outwash)
NOTES
GROUND ELEVATION 2009.1 ft
LOGGED BY DD
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/7/15 COMPLETED 7/7/15
AT TIME OF DRILLING 44.50 ft / Elev 1964.60 ft
AT END OF DRILLING 44.50 ft / Elev 1964.60 ft
AFTER DRILLING 28.00 ft / Elev 1981.10 ft
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-6
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
13-15(28)
12-13(25)
19-22
(41)
22-19
(41)
(SP) POORLY GRADED SAND, medium to coarse grained,
brown, moist to 25', then water-bearing, medium dense to dense.(Glacial Outwash) (continued)
End of boring.
Groundwater at 44.5' with 49' of hollow-stem auger in the ground.
Groundwater at 28' immediately after withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-6
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
2-5
(7)
4-6
(10)
8-11(19)
9-8(17)
7-10
(17)
10-11
(21)
18 6
(SM) SILTY SAND, fine to medium grained, with roots, dark
brown, moist.(Topsoil)
(SM) SILTY SAND, fine grained, with seams of Lean Clay, brown,moist to wet, loose.
(Alluvium)
(SM) SILTY SAND, very fine to fine grained, brown, moist,medium dense.(Alluvium)
(SP-SM) POORLY GRADED SAND with SILT, medium to coarsegrained, a trace of Gravel, brown, moist, medium dense.
(Glacial Outwash)
NOTES
GROUND ELEVATION 2007.6 ft
LOGGED BY SLN
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/10/15 COMPLETED 7/10/15
AT TIME OF DRILLING 34.00 ft / Elev 1973.60 ft
AT END OF DRILLING 31.00 ft / Elev 1976.60 ft
AFTER DRILLING 37.00 ft / Elev 1970.60 ft
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-7
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
11-15(26)
12-15(27)
12-25
(37)
12-32
(44)
(SP-SM) POORLY GRADED SAND with SILT, medium to coarse
grained, a trace of Gravel, brown, moist, medium dense.(Glacial Outwash) (continued)
End of boring.
Groundwater at 34' with 34' of hollow-stem auger in the ground.
Groundwater at 37' with 49' of hollow-stem auger in the ground 3days later.
Groundwater at 31' immediately after withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-7
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
11-11
(22)
6-5
(11)
8-10(18)
8-10(18)
9-9
(18)
10-11
(21)18 10
(SM) SILTY SAND, fine to medium grained, with roots, dark
brown, moist.(Topsoil)
(SM) SILTY SAND, fine to medium grained, brown, moist, medium
dense.(Alluvium)
(SP) POORLY GRADED SAND, fine to medium grained, brown,moist, medium dense.
(Alluvium)
(SM) SILTY SAND, fine to medium grained, with seams of Clayey
Sand, brown, moist to wet, medium dense.(Alluvium)
(SW-SM) WELL GRADED SAND with SILT, fine to mediumgrained, brown, moist, medium dense.(Glacial Outwash)
NOTES
GROUND ELEVATION 2009.3 ft
LOGGED BY DD
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/7/15 COMPLETED 7/7/15
AT TIME OF DRILLING 43.00 ft / Elev 1966.30 ft
AT END OF DRILLING 36.00 ft / Elev 1973.30 ft
AFTER DRILLING 47.00 ft / Elev 1962.30 ft
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-8
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
10-9(19)
13-17(30)
18-32
(50)
19-25
(44)
(SW-SM) WELL GRADED SAND with SILT, fine to medium
grained, brown, moist, medium dense.(Glacial Outwash) (continued)
(SP) POORLY GRADED SAND, medium to coarse grained,brown, water-bearing, medium dense to dense.
(Glacial Outwash)
End of boring.
Groundwater at 43' with 44' of hollow-stem auger in the ground.
Groundwater at 47' with 49' of hollow-stem auger in the ground 3days later.
Groundwater at 36' immediately after withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-8
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
4-6
(10)
4-5
(9)
6-9(15)
9-9(18)
12-11
(23)
12-15
(27)
(SM) SILTY SAND, fine to medium grained, with roots, dark
brown, moist.(Topsoil)
(SM) SILTY SAND, fine grained, brown, moist, loose.(Alluvium)
(SC-SM) SILTY CLAYEY SAND, very fine to fine grained, brown,wet, loose.
(Alluvium)
(SP) POORLY GRADED SAND, fine to medium grained, brown,moist to 15', then water-bearing, medium dense to dense.
(Glacial Outwash)
NOTES
GROUND ELEVATION 2010.6 ft
LOGGED BY SLN
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/8/15 COMPLETED 7/8/15
AT TIME OF DRILLING 15.00 ft / Elev 1995.60 ft
AT END OF DRILLING 11.00 ft / Elev 1999.60 ft
AFTER DRILLING 41.00 ft / Elev 1969.60 ft
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-9
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
18-30(48)
20-25(45)
26-24
(50)
21-26
(47)
(SP) POORLY GRADED SAND, fine to medium grained, brown,
moist to 15', then water-bearing, medium dense to dense.(Glacial Outwash) (continued)
(SP) POORLY GRADED SAND, medium to coarse grained, a
trace of Gravel, brown, moist, dense.(Glacial Outwash)
End of boring.
Groundwater at 15' with 19' of hollow-stem auger in the ground.
Groundwater at 41' with 49' of hollow-stem auger in the ground 3days later.
Groundwater at 11' immediately after withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-9
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
SS
SS
5-6
(11)
4-5
(9)
9-9(18)
8-8(16)
11-15
(26)
11-15
(26)
19 9
(SM) SILTY SAND, fine grained, with roots, dark brown, moist.
(Topsoil)
(SP) POORLY GRADED SAND, medium to coarse grained,brown, moist, medium dense.
(Alluvium)
(SM) SILTY SAND, fine grained, brown, moist, loose.(Alluvium)
(SW-SM) WELL GRADED SAND with SILT, fine to medium
grained, brown, moist, medium dense.(Glacial Outwash)
NOTES
GROUND ELEVATION 2008.4 ft
LOGGED BY SLN
DRILLING METHOD Hollow Stem Auger
DRILLING CONTRACTOR Johnson Exploration Drilling GROUND WATER LEVELS:
CHECKED BY PTN
DATE STARTED 7/8/15 COMPLETED 7/8/15
AT TIME OF DRILLING 28.00 ft / Elev 1980.40 ft
AT END OF DRILLING 27.00 ft / Elev 1981.40 ft
AFTER DRILLING 48.00 ft / Elev 1960.40 ft
HOLE SIZE 8 inches
SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
(Continued Next Page)PLASTICITYINDEXGRAPHICLOGDEPTH(ft)0
5
10
15
20
25
30 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 1 OF 2
BORING NUMBER B-10
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
SS
SS
SS
SS
13-14(27)
21-25(46)
21-23
(44)
19-20
(39)
(SW-SM) WELL GRADED SAND with SILT, fine to medium
grained, brown, moist, medium dense.(Glacial Outwash) (continued)
End of boring.
Groundwater at 28' with 29' of hollow-stem auger in the ground.
Groundwater at 48' with 49' of hollow-stem auger in the ground 3days later.
Groundwater at 27' immediately after withdrawal of the auger.
Bore hole then grouted to the surface.SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE)DRY UNIT WT.(pcf)MOISTURECONTENT (%)LIQUIDLIMITPLASTICLIMITPLASTICITYINDEXFINES CONTENT(%)ATTERBERGLIMITS
PLASTICITYINDEXGRAPHICLOGDEPTH(ft)35
40
45
50 POCKET PEN.(tsf)MATERIAL DESCRIPTION
PAGE 2 OF 2
BORING NUMBER B-10
CLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
IPEC BORING LOG - GINT STD US LAB.GDT - 7/23/15 13:25 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
DENSITY
Very Loose 0 - 4
Loose 4 - 10
Coarse-Gravel and Gravel GW
Grained Gravelly Soils (with little or no fines)GP
Soils <50% coarse fraction Gravel GM
passes #4 sieve (with >12% fines)GC
<50% Sandy and Sand SW
passes #200 Sandy Soils (with little or no fines)SP
sieve >50% coarse fraction Sand SM
passes #4 sieve (with >12% fines)SC
Fine-ML
Grained CL
Soils OL
>50% MH
passes #200 CH
sieve OH
PT Peat
DESCRIPTION RANGE
Occasional <5%
Trace 5% - 12%
With >12%
Coarse Fine Coarse Medium Fine
MODIFIERS
Hard > 30
USCS SOIL CLASSIFICATION
Liquid Limit > 50
Highly Organic Soils
Silt and Clay
MAJOR DIVISIONS
Liquid Limit < 50
Salt and Clay
Organic Clay and Silt (med to high plasticity)
Muck
Well Graded Sand
Inorganic Silt
Fat Clay
MOISTURE CONTENT
Gravel SandBoulders Cobbles
GRAIN SIZE (INCHES)
Silt and Clay
12 3 0.75 0.19 0.079 0.0171 0.0029
17 - 30
Soft
Rather Soft
Medium
Rather Stiff
Stiff
Very Stiff
2 - 3
4 - 5
6 - 8
9 - 12
RELATIVE DENSITY OR CONSISTENCY VERSUS SPT N-VALVE
FINE-GRAINED SOILS
N(BLOWS/FT) CONSISTENCY N(BLOWS/FT)
Very Soft 0 - 1
MAJOR DIVISIONS WITH GRAIN SIZE
SIEVE SIZE
12" 3" 3/4" 4 10 40 200
COARSE-GRAINED SOILS
Poorly Graded Sand
Silty Sand
Clayey Sand
Silt
Lean Clay
Organic Silt and Clay (low plasticity)
GROUP DESCRIPTIONS
Well Graded Gravel
Poorly Graded Gravel
Silty Gravel
Clayey Gravel
13 - 16
FIELD OBSERVATION
Absence of moisture, dusty, dry to the touch
Dry of optimum moisture content
Wet of optimum moisture content
DESCRIPTION
Dry
Moist
Wet
Very Dense > 50
Dense 31 - 50
Medium-Dense 11 - 30
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0.0010.010.1110100
PI Cc CuLLPL
8.02
21.25
6.64
4.30
5.00
1.57
2.32
1.39
1.21
1.35
GRAIN SIZE DISTRIBUTION
COBBLES GRAVEL
4.5
8.9
7.1
5.6
5.6
19
15.9
19
12.2
9.5
SAND
GRAIN SIZE IN MILLIMETERS
coarse fine
SW Well Graded Sand with Gravel
SW-SM Well Graded Sand with Silt
SP-SM Poorly Graded Sand with Silt
SP-SM Poorly Graded Sand with Silt
SP-SM Poorly Graded Sand with Silt
Classification
D100 D60 D30 D10 %Gravel
4.187
2.258
1.187
0.923
0.899
B-2
B-4
B-5
B-6
B-7
coarse SILT OR CLAYfinemedium
25.0
15.0
25.0
20.0
20.0
%Sand %Silt %Clay
1.851
0.747
0.543
0.491
0.467
0.522
0.106
0.179
0.215
0.18
35.1
13.3
5.9
1.6
0.7
60.4
77.8
87.0
92.8
93.6
BOREHOLE DEPTH
BOREHOLE DEPTH
3 100
B-2
B-4
B-5
B-6
B-7
24 16 301 200610501/2 HYDROMETERU.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS 1403420406601.5 8 143/4 3/8
25.0
15.0
25.0
20.0
20.0PERCENT FINER BY WEIGHTCLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
GRAIN SIZE - GINT STD US LAB.GDT - 7/23/15 13:26 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0.0010.010.1110100
PI Cc CuLLPL
7.39
6.26
1.78
1.72
GRAIN SIZE DISTRIBUTION
COBBLES GRAVEL
9.7
8.8
9.5
9.5
SAND
GRAIN SIZE IN MILLIMETERS
coarse fine
SW-SM Well Graded Sand with Silt
SW-SM Well Graded Sand with Silt
Classification
D100 D60 D30 D10 %Gravel
0.582
0.581
B-8
B-10
coarse SILT OR CLAYfinemedium
30.0
15.0
%Sand %Silt %Clay
0.286
0.305
0.079
0.093
0.5
0.5
89.8
90.7
BOREHOLE DEPTH
BOREHOLE DEPTH
3 100
B-8
B-10
24 16 301 200610501/2 HYDROMETERU.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS 1403420406601.5 8 143/4 3/8
30.0
15.0PERCENT FINER BY WEIGHTCLIENT NAI Black
PROJECT NUMBER 2013-026A
PROJECT NAME Pinted Hills Phase 2
PROJECT LOCATION Spokane Valley, WA
GRAIN SIZE - GINT STD US LAB.GDT - 7/23/15 13:26 - J:\_IPEC PROJECTS\_2013 PROJECTS\2013-026A PAINTED HILLS PHASE 2\GINT\2013-026A PAINTED HILLS PHASE 2.GPJInland Pacific Engineering Company
3012 North Sullivan Road, Suite C
Spokane Valley, WA 99216
Telephone: 509-209-6262
Fax: 509-290-5734