GEOLOGIC INVESTIGATION AND DATA REPORTPLUM CREEK FRS NO. 21
CALDWELL COUNTY, TEXAS

AECOMAustin, Texas-1-

Mr. Lance Finnefrock, PE, GE
AECOM
9400 Amberglen Blvd
Austin, TX 78729

Project No. 0118-039
July 27, 2021

Geologic Investigation and Data Report
Plum Creek FRS No. 21
Caldwell County, Texas
Submitted herewith is the Geologic Investigation (GI) and Data Report for the abovereferenced project. This report presents the findings of the geologic and geotechnical field
investigation, and was prepared in general compliance with our contract dated September 10,
2018. A previous version of this GI report was issued on September 5, 2019. This updated
version of the GI Report is intended to address comments made by the NRCS that were
provided to Balcones on December 17, 2020.
A Soil Mechanics Report has been issued under separate cover by AECOM that
includes results of laboratory testing, analyses and geotechnical recommendations for designand construction. Balcones Geotechnical, LLC (Balcones) appreciates the opportunity toprovide these geotechnical engineering services and looks forward to future assignments.
Please do not hesitate to contact us with any questions or comments about this report, or if we
can be of further service.
Sincerely,
BALCONES GEOTECHNICAL, LLC
TBPE Firm Registration No. F-15624

Rebecca A. Russo, PE
Senior Geotechnical Engineer

David R. Mason, PG
Senior Geologist
Attachments
Distribution:
Addressee
File (1)

CONTENTS
PAGE
INTRODUCTION ......................................................................................................................... 1
AUTHORIZATION AND SCOPE .................................................................................................. 1
PROJECT DESCRIPTION ........................................................................................................... 2
FIELD INVESTIGATION .............................................................................................................. 3
Embankment Dam Drilling ................................................................................................ 5
Borrow Area Drilling.......................................................................................................... 6
Piezometers ..................................................................................................................... 6
LABORATORY INVESTIGATION ................................................................................................ 8
SITE AND SUBSURFACE CONDITIONS .................................................................................... 8
Physiography.................................................................................................................... 8
Geology ............................................................................................................................ 9
Near Surface Soil Survey ............................................................................................... 10
Site Stratigraphy ............................................................................................................. 10
Groundwater................................................................................................................... 12
INTERPRETATIONS AND CONCLUSIONS .............................................................................. 13
Existing Embankment ..................................................................................................... 13
Foundation ..................................................................................................................... 13
Borrow Areas.................................................................................................................. 14
Groundwater................................................................................................................... 14
Other Considerations...................................................................................................... 14
CONDITIONS ............................................................................................................................ 15-i-

PLATESVICINITY MAP .................................................................................................................... Plate 1
BORING LOCATION PLAN ................................................................................................ Plate 2
GENERALIZED SUBSURFACE PROFILE – Dam Crest..................................................... Plate 3
GENERALIZED SUBSURFACE PROFILE – Principal Spillway Centerline ......................... Plate 4
GENERALIZED SUBSURFACE PROFILE – Auxiliary Spillway Centerline ......................... Plate 5
GENERALIZED SUBSURFACE PROFILE – Downstream Toe........................................... Plate 6
FIELD DRILLING EQUIPMENT PHOTOS .......................................................................... Plate 7
USGS TOPOGRAPHIC MAP .............................................................................................. Plate 8
GEOLOGIC MAP ................................................................................................................ Plate 9
USDA SOIL SURVEY MAP............................................................................................... Plate 10

APPENDICESAPPENDIX A - BORING LOGS AND SAMPLE PHOTOGRAPHS FOR EMBANKMENT DAM
APPENDIX B - BORING LOGS AND SAMPLE PHOTOGRAPHS FOR BORROWAPPENDIX C – PIEZOMETER CONSTRUCTION-ii-

INTRODUCTION
The project will consist of improvements to the existing Plum Creek FRS No. 21
embankment dam including: 1) raising the dam crest, 2) installation of a new horizontal principal
spillway conduit, and 3) construction of a new RCC (roller compacted concrete) auxiliary
spillway to replace the existing earthen spillway. The dam site is located off of FM 1185, about
1.25 miles east of SH 130, and about 5 miles northeast of the city of Lockhart, as shown on theVicinity Map, Plate 1.
The dam is owned by the Natural Resource Conservation Service (NRCS) and locallymaintained by the Plum Creek Conservation District. The proposed dam safety improvements
are being designed by AECOM under contract with the Texas Soil Survey and Water
Conservation Board (TSSWCB). Balcones Geotechnical, LLC (Balcones) was retained by
AECOM to provide geotechnical engineering services and this Geologic Investigation (GI) andData Report.
The following sections of this report include a discussion of authorization and scope;
project description; field investigation and limited laboratory testing procedures; and a
discussion of site and subsurface conditions.

AUTHORIZATION AND SCOPE
The investigation was authorized by issuance of AECOM Purchase Order No. 106099
with an effective date of September 10, 2018. The Purchase Order contains Balcones Proposal
for Geologic Investigation, project number 0118-039, dated July 31, 2018. The proposal
outlines the requested and agreed upon scope of services.
The scope of the investigation included 1) drilling of 17 dam borings, 6 hand auger
borings, and 8 borrow borings to determine subsurface conditions and for obtaining
representative samples for laboratory testing; 2) limited laboratory testing consisting of soil
moisture content and Atterberg Limits determination of hand auger borings, and 3) preparationof this report.
The Geologic Investigation (GI) presented herein contains data collected for thisinvestigation as well as as-built information and site observations. Specific findings andrecommendations based on geotechnical analyses will be presented at a later time in a Soil
Mechanics Report (SMR), under separate cover.

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Field sampling and laboratory testing were in general accordance with methods,
procedures, and practices set forth by the American Society for Testing and Materials, latest
version of Annual Book of ASTM Standards, where applicable. This GI report was prepared in
substantial compliance with the NRCS Title 210 – National Engineering Manual (NEM), Part 531– Geology, Subpart A – Geologic Investigations, and that specifically discussed with the project
team.
PROJECT DESCRIPTION
The project will consist of modifications to an existing earthen embankment flood control
dam in Caldwell County, Texas. According to the USACE National Inventory of Dams, the dam(TX03428) was built in 1962, has a reported storage capacity of 5,318 acre-feet and dam heightof 41 feet. We have been provided with: 1) As-built drawings dated 1961 and associated SMR(Soil Mechanics Report) dated 1961, and 2) GI and SMR dated 2014/2015, prepared by NRCS,
associated with borings and headcut analyses along the existing earthen auxiliary spillway
channel.
For this current project, we understand that the following dam safety improvements areproposed:

Existing top of dam El. ranges from about 520 to 523 feet. Proposed top of dam
El. will be 527.3 feet. Dam raise will generally range from 4½ to 8½ ft of newembankment fill.

Existing auxiliary spillway crest elevation is about El. 516 feet. The existing
auxiliary spillway will be replaced with an RCC structure to be located near the
middle of the dam; therefore, approximately 11½ ft of embankment fill will be
required at the existing auxiliary spillway to achieve the dam crest El. 527.3 feet.

The existing horizontal conduit principal spillway will be completely removed andreplaced with a new 42-inch ID horizontal conduit pipe, riser structure and impact
basin.

The new riser structure will have a (low weir) normal pool El. 498.8 ft, and upper
weir El. 500.7 feet. The riser invert El. will be approximately 489 feet. The
impact basin invert elevation will be about El. 485 feet.



A new auxiliary spillway is planned, consisting of 300-ft wide RCC structure withan invert elevation of 518.8 feet.

Internal drainage consisting of a filter diaphragm is planned.

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FIELD INVESTIGATION
The geotechnical investigation was initiated on November 26, 2018 and extended
through February 27, 2019 due to intermittent periods of inclement weather in mid to late
December 2018 and January 2019. Field logging representatives from Balcones included David
Mason, PG, and/or Pat Cossins, PG. The full-time NRCS field representative was Bryan Moffat,
PG, who was also onsite during the entire field investigation.
A total of seventeen (17) borings and 6 hand-auger borings were drilled along the
proposed embankment dam; and 8 borings were advanced in proposed borrow areas. A planshowing the boring locations, prepared by AECOM, is presented on Plate 2.
Summary boring information is presented in the following Tables 1 and 2, with boring
designation nomenclature described below. Boring elevations and State plane coordinates
were surveyed by others and provided to us. Borings designed with a “P” behind the number
denote piezometer installation at these two locations.
Table 1. Boring Summary Table – Embankment Dam
DrilledState Plane Coordinates

Depth

Northing

Easting

2/26/20193013898288.3

2395939.904

Dam Crest

523.48

2/27/2019

3813898192.22

2395458.651

Dam Crest

B-03

524.92

2/27/2019

5213898130.25

2395100.308

Dam Crest

B-04P

526.0

12/21/2018

6213898060.5

2394711.34

Dam Crest

B-05

525.07

12/18/2018

7013898019.28

2394475.342

Dam Crest

B-06P

525.05

12/6/20187013897994.38

2394329.557

Dam Crest

B-07

525.7912/4/2018

60

13897963.44

2394153.397

Dam Crest

B-08

524.62

12/3/2018

5013897883.96

2393699.533

Dam Crest

B-09

523.56

12/3/20183013897786.23

2393149.057

Dam Crest

B-301

500.1

11/29/2018

2513898193.84

2394994.979

Upstream Toe

B-302

503.83

11/29/2018

2513898023.92

2394132.01

Upstream Toe

B-601

500.7

11/27/2018

2613898018.33

2395004.475

Downstream Toe

B-602

494.98

11/24/2018

3513897945.63

2394732.122

Downstream Toe

B-603

494.46

11/28/2018

4513897902.55

2394499.168

Downstream Toe

B-604

501.6

11/28/2018

4513897851.23

2394210.194

Downstream Toe

BoringElevation

Drill Date

B-01

515.91

B-02-3-

LocationTable 1. Boring Summary Table – Embankment Dam
DrilledState Plane Coordinates

Depth

Northing

Easting

11/27/2018

2513897792.11

2393717.358

Downstream Toe

493.92

11/29/2018

2013897641.86

2394436.689

Downstream Toe

HA-1

514.991/9/2019

513897986.78

2394484.018

Embankment

HA-2

514.15

1/9/2019

513897958.25

2394325.499

Embankment

HA-3

516.091/9/2019

513897932.35

2394155.627

Embankment

HA-4

515.28

1/9/2019

513898051.23

2394471.302

Embankment

HA-5

514.22

1/9/2019

513898027.23

2394318.948

Embankment

HA-6

516.53

1/9/2019

513897992.2

2394148.567

Embankment

BoringElevation

Drill Date

B-605

498.01

B-606

Location

Boring Designation Nomenclature (NRCS):
B-000 – Borings along Dam Crest
B-300 – Borings along Upstream Toe
B-600 – Borings along the Downstream Toe
HA-0 – Hand Auger Borings along Embankment Slope Face

The borrow borings drilled for this study are summarized in the following table. It should
be noted that borings B-103 and B-106 were not drilled due to their proximity to the existingembankment dam and anticipated limits of soil borrow near the existing dam.
Table 2. Boring Summary Table – Borrow
DrilledState Plane Coordinates

Depth

Northing

Easting

11/29/2018

1013898797.37

2395214.085

Borrow Area

500.84

11/26/2018

1013898572.5

2395238.506

Borrow Area

B-104

502.72

11/29/2018

1013898845.38

2395477.282

Borrow Area

B-105

506.44

11/26/2018

1013898610.97

2395505.782

Borrow Area

B-107

499.77

11/26/2018

1013898820.47

2394212.414

Borrow Area

B-108

500.01

11/26/2018

1013899014.75

2394284.459

Borrow Area

B-109

500.6911/26/2018

1013899203.14

2394369.853

Borrow Area

B-110

504.14

11/26/2018

813899070.46

2394137.704

Borrow Area

BoringElevation

Drill Date

B-101

500.33

B-102

Boring Designation Nomenclature (NRCS):
B-100 – Borings from Borrow Area

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LocationEmbankment Dam Drilling
Detailed descriptions of subsurface materials encountered at the boring locations drilled
along the dam are presented on the Logs of Borings included in Appendix A. Photographs ofthe soil samples taken in the field following each respective boring log. Keys to Terms andSymbols used on the logs are also presented in Appendix A, preceding the boring logs.
Generalized Subsurface Profiles along the Dam Crest, Principal Spillway, and Auxiliary
Spillway alignments, and the Downstream Toe are shown on Plates 3, 4, 5, and 6 respectively.
The embankment dam centerline borings were drilled using a truck-mounted CME-55
equipped with 1) continuous flight augers for advancing the holes dry and recovering disturbed
samples (ASTM D1452), 2) seamless push tubes for obtaining relatively undisturbed soil
samples of cohesive strata (ASTM D1587), 3) split-barrel samplers and drive weight assemblyfor obtaining representative samples and measuring the penetration resistance (N values) of
non-cohesive soil strata (ASTM D1586) and 4) double-tube wireline core barrel with diamondbits for obtaining 2-inch diameter rock cores (ASTM D2113). The upstream and downstream
toe embankment borings were drilled using a geoprobe rig equipped with geotechnical sampling
items 1, 2 and 3 above. Hand-auger borings were performed at the specified location on theside of the slope, and were advanced using hand tools to the boring termination depth of 5 feet.
Photographs of the Field Drilling Equipment used for this investigation are shown on Plate 7.
Pocket penetrometer values, in tons per square foot, and Standard Penetration Test
N-values, in blows per foot, are also shown on the logs of borings at the respective test depth.
Push tube samples that were field extruded, and relatively undisturbed push tube samples thatwere collected for NRCS are shown as separate sampling symbols on the boring logs. NRCS
collected samples were transported to their Lincoln, Nebraska laboratory for testing by others.
State Plane coordinates and boring elevations shown on the boring logs were provided
to us by AECOM, obtained by the project surveyors.
Groundwater and/or drilling fluid observations made during drilling are presented on theboring logs. The dam crest borings (B-01 – B-09), and borings drilled upstream anddownstream of the dam (B-300 and B-600 borings) were backfilled with a bentonitic grout uponcompletion of drilling, with the exception of borings B-04 and B-06 where 2” diameterpiezometers were set in the borehole. Piezometer construction schematics are provided inAppendix C.

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Dynamic Cone Penetrometer (DCP) testing was conducted at adjacent to each handauger boring (HAB) location on the upstream and downstream slopes of the embankment. HAB
locations are shown on Plate 2. The DCP testing was performed using a DPM-30 portablehammer set manufactured by Pagani Geotechnical Equipment. The DCP test consists ofrecording the number of blows of a 65-lb hammer falling 8 inches, driving a 1.4-inch diameterconical point 10 centimeters. The number of blows per 10 centimeters can be correlated to SPT(Standard Penetration Test, ASTM D1586) using the following energy conversion:
NSPT = NDCP * 6.0 / 7.87
The correlated SPT (N-value) data are plotted versus depth in Appendix A, following the HAB
logs. Photographs of the field DCP testing are also included in Appendix A.
Borrow Area Drilling
Detailed descriptions of subsurface materials encountered at the borrow boring locations
are presented on the Logs of Borings included in Appendix B. Photographs of the soil samples
taken in the field following each respective boring log. Keys to Terms and Symbols used on thelogs are also presented in Appendix B, following the boring logs. Photographs of the bulk
borrow samples taken in the laboratory are also included in Appendix B.
The borrow borings were drilled using a geoprobe equipped with a direct push sampler
in 5-ft increments. Photographs of the Field Drilling Equipment used for this investigation are
shown on Plate 7. Pocket penetrometer values, in tons per square foot were obtained every 1 ftof sample, and are also shown on the logs of borings at the respective test depth.
Groundwater and/or drilling fluid observations made during drilling are presented on theboring logs. The borings were backfilled with a mixture of auger cuttings and bentonite to theground surface. State Plane coordinates and boring elevations shown on the boring logs were
provided to us by AECOM, obtained by the project surveyors.
Piezometers
As part of the final phase of the geotechnical investigation, two vertical standpipe
piezometers were installed in borings B-04 and B-06. It should be noted that the piezometerthat was originally set in boring B-06 was damaged during well construction; therefore, a new
borehole was advanced for the piezometer at boring B-06P. The piezometer was constructed in
the borehole at B-04P.

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The piezometers consists of 2-inch diameter plastic pipe, set vertically in the bored hole,with sections that are slotted to allow any groundwater present to enter the pipe. The upper
portion of the piezometer pipe typically consists of solid pipe that is grouted up to the groundsurface to deter surface water infiltration. The lower slotted portion of the pipe is backfilled with
washed sand in the annular space.
The surface of each piezometer was completed with a flush-mounted 12-inch diameter
steel manhole cover and concrete pad. Schematics of the installed piezometer construction,site photographs, and TCEQ well reports are presented in Appendix C. Abandonment of thepiezometers and closure reporting to the TCEQ is beyond the scope of this phase of the project.
Piezometer data collected to date is summarized on the table on the following page andpresented on the boring log, B-04P and B-06P included in Appendix A. A photograph of thepiezometer surface completion follows the summary table.
Table 3 - Summary of Piezometer Data
Boring Surface

Date of

Water Depth

Water

Elevation

Reading

Measured, ft

Elevation, ft

B-04P

526

6/7/19

30.8

495.2

B-06P

525

6/7/19

32.1

492.9

BoringSite Photos (6/7/19) of two site piezometers installed along dam crest.

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LABORATORY INVESTIGATIONAs mentioned previously, the laboratory testing program is being conducted by the
NRCS laboratory in Lincoln, Nebraska. Selected push tube samples (both field extruded and
Shelby tubes) were transported to the NRCS lab where laboratory assignments were made byothers.
As part of this GI report, we have conducted soil moisture content tests (ASTM D2216)
on all embankment dam samples that were retained by us and are being stored in ourwarehouse in north Austin, Texas. Soil classification tests consisting of Atterberg limit
determinations (ASTM D4318) and partial grain-size analyses (ASTM D422) were conducted on
representative samples from the hand-auger borings. The results of the limited tests aretabulated on the boring logs at the sample recovery depths.

SITE AND SUBSURFACE CONDITIONS
Physiography
The project site is located along FM 1185, about 1.25 miles east of SH 130, and 5 miles
northeast of the city of Lockhart. The site is currently an embankment dam with principal
spillway riser and plunge pool; and earthen channel auxiliary spillway over the left abutment. At
the time of our study from December 2018 through June 2019, the lake impoundment was near
the normal pool El. 498 to 500 feet. Site photographs of the impounded reservoir are below.

Site Photo taken 12/4/2018

Site Photo taken 6/7/2019-8-

The USGS Topographic Map is presented on Plate 8. The dam is situated on Dry
Creek, within the Plum Creek Watershed district. According the to As-built drawings and reviewof the USGS Topographic Map, the upgradient watershed is on the order of 5500 acres. The
riser (normal pool) elevation is shown as El. 500 ft, and auxiliary spillway El. 517 feet. The
As-built top of dam is reported at El. 522.3 ft, and recent survey data shows the top of dam tovary from approximately El. 520 to 523 feet. The dam embankment crest, side slopes, andborrow area were well vegetated at the time of this study.
Geology
According to the Geologic Atlas of Texas, Seguin Sheet1, the dam site is mapped as
being underlain by clay, sand, and gravel of the Leona Formation (Qle), Wilcox Group (Ewi),
and Midway Group (Emi). A Geologic Map is presented on Plate 9.
The Leona Formation is a Quaternary-age alluvial deposit which is composed mostly ofdark brown clay with layers of gravel that are occasionally cemented. In some areas near
Lockhart, the Leona gravels can be quite large, approaching cobble size, sometimes making
agricultural and earth moving operations problematic.
The Wilcox and Midway Groups are Eocene era formations comprised of upper clay andsand strata transitioning to less weathered clayshale, shale, and weakly cemented sandstone.
According to geologic publications, unweathered Wilcox is described as mudstone with various
amounts of sandstone, lignite, and ironstone concretions. Weathered Wilcox soils become
reddish or yellowish tan and light gray with abundant sand content and weathered sandstonelayers. The Wilcox is also known to contain lignite lenses ranging from 1 to 20 ft thick.
The Midway Group is composed of two formations: Wills Point and Kincaid, but are notmapped separately. The Kincaid is the upper part of the Midway formation and is described assand and clay, glauconitic, poorly sorted, argillaceous, greenish gray clay, and medium gray to
black silty clay in the lower parts. With weathering, the Midway becomes yellowish brown clay.
Both the Wilcox and Midway soils have varying amounts of sand and clay. Due to theirsimilarities, it was difficult to discern the two formations (Wilcox and Midway) on the boring logs,
and are referred to as “Midway” on the logs, except boring B-01. However, the upper soils ofboring B-01 contained a cemented layer from the 13 to 15 ft depth, which could be indicative of
the Wilcox formation. The other borings did not encounter similar cemented and/or weatheredsandstone layers. Geologic mapping presented on Plate 9 also shows surficial outcropping of
the Wilcox at the east end of the dam, in the vicinity of boring B-01.
1

Barnes, V.E. (1979), "Geologic Atlas of Texas, Seguin Sheet," The University of Texas at Austin, mapand explanatory bulletin.

-9-Surface expression faults are mapped in the vicinity of the dam site, with one fault
mapped about 2,000 LF to the southeast of the site, and another fault set mapped about 1¼
miles northwest of the site at the faulted interface of Midway (Eocene age) and Navarro(Cretaceous age) north and west of the dam site. Faults are generally not consideredseismically active in the central Texas region, but are known to transmit groundwater andpossibly contain fault gouge.
No faulting is specially mapped at the project site and may have been masked by theoverlying Leona (alluvium) where present. However, the transition between the Midway andWilcox Groups is anticipated at the site, generally about 1,000 ft east of Dry Creek. Thistransition is mapped on the geologic map (Plate 9) and confirmed in the borings (B-01). The
transition is likely low displacement as the Wilcox is lithographically situated above the Midway.
Near Surface Soil Survey
The near surface soil survey map is shown on Plate 10, and includes Crockett series
soils to the east, and Mabank loam and Fett Gravelly soils to the west. The Crockett series(CrC2) are mapped in the proposed east borrow area and are likely weathered remnants of the
Wilcox Group. The Crockett soils are described as moderately well drained to the 43 to 60 inch
depth until a restrictive layer is encountered. Depth to the water table is typically greater than
80 inches.
The Mabank loam (MaB) is mapped in the general area of the proposed west borrow
area, and is described as moderately well drained is a depth to restrictive layer greater than 80
inches. The unit parent material is reported as “clayey alluvium of quaternary age derived frommixed sources”, likely representative of the Leona formation.
Site Stratigraphy
Subsurface conditions can best be understood by a thorough review of the Boring Logs
included in Appendices A and B, and the Generalized Subsurface Profiles presented on Plates
3, 4, 5, and 6. A description of the subsurface conditions for the Dam Centerline, Principal
Spillway Centerline, Auxiliary Spillway Centerline, Downstream Toe, and Borrow Area arepresented in the following sections.

-10-Dam Crest Centerline. Borings B-01 through B-09 were drilled along the dam crest
centerline to depths of 30 to 70 feet below the existing ground surface. The borings
encountered 15 to 45 ft of fill material, underlain by clay of the Midway Group, furthertransitioning to relatively less weathered clayshale to the boring termination depths. Boring B-1,
which was drilled in the current auxiliary spillway encountered native soils at the ground surface.
The Dam Centerline Subsurface Profile is presented on Plate 3.
The embankment fill material is generally described as tan, light brown, gray and darkbrown fat and lean clay. The USCS descriptions (fat or lean clay) are based on visualassessment (ASTM D2488), as laboratory testing was not included in this scope. Pocket
penetration test values in the embankment material generally ranged from less than 1 to greaterthan 4.5 tsf. In some borings, we were able to discern the core trench at the bottom of the fillmaterial above the native Midway stratum. The estimated core trench thickness at the boring
locations ranged from 3 to 8 ft thick, but is generally considered to be 4 to 7 ft thick.
The native Midway soils were typically described as tan, light brown, gray and dark grayfat clay with sand seams, silt partings, ferrous staining, and calcareous inclusions. The stratumis described in some borings as blocky, indicating a weak secondary structure. Boring B-1 wasclassified as Wilcox Group due to the relatively higher sandy nature of the stratum, and thecemented, gravelly layer encountered from the 13 to 15 ft depth. This layer could be associatedwith fault gouge, but most likely is indicative of iron concretions and weak cementation from
calcareous content of the Wilcox.
Principal Spillway Alignment. Borings B-301, B-04P, B-03, B-601 and B-602 were
drilled in the vicinity of the new principal spillway alignment, and are shown on Plate 4. The
borings encountered embankment fill material, alluvium, Midway residual soils, and clayshale.
For the proposed principal spillway alignment with a riser invert elevation of about 489 ft, and an
outlet invert El. 485 ft, the principal spillway pipe and alignment will be founded mostly in native
Midway clay soils.
The Midway soils are typically described as tan, light brown, dark gray and gray highplasticity clay. Accordingly, the Midway clay soils have recognized shrink swell potential
associated with change in soil moisture content. Every effort should be made to stabilize theprepared clay subgrade at the time of construction, so that existing clays soils do not lose soil
moisture and consequently shrink, causing nonuniform support of the principal spillway pipe
cradle. Also, groundwater was encountered in boring B-601 above the proposed principal
spillway pipe alignment at approximate elevation 487.5 feet.

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Auxiliary Spillway Alignment. Borings B-302, B-06P, B-5, B-04P, B-604, B-603, B602, and B-606 were drilled near and beneath the proposed auxiliary RCC spillway structureand discharge channel. The Generalized Subsurface Profile is shown on Plate 5.
Based on the boring data and a proposed spillway invert of El. 518.8 ft, the auxiliary
spillway structure will be supported by existing embankment fill material. As mentioned
previously, laboratory testing and classification testing is being performed by others; therefore, it
should be noted that the existing embankment soils are generally referred to as fat and leanclay based on visual classification (ASTM D2488).
Downstream Toe. Borings B-601 through B-605 were drilled along the downstream toeof the existing embankment dam to depths of 20 to 45 ft below existing grade. The Generalized
Subsurface Profile along the dam downstream toe is shown on Plate 6.
The borings encountered fill material, alluvium, and clay and clayshale of the Midway
Group. The fill material is typically described as brown to dark brown fat clay with gravel
content. Alluvium was encountered in the borings beneath the fill material and atop the Midway
residual soils. It should be noted that it was sometimes difficult to discern alluvial soils from(reworked) fill material and native Midway soils. When the alluvial soils contained abundantgravel, this stratum was typically referred to as Leona alluvial soils.
Borrow Area. Borings B-101, B-102, B-104, B-105, and B-107 through B-110 were
drilled to the 10 ft depth within two proposed borrow areas. In general, the borings encountered
2 to 5 ft of surficial dark brown to dark grayish brown fat clay, transitioning to tan and gray fat
clay (Midway Group) to the boring termination depth of 10 feet. Bulk soil samples were also
obtained from the auger cuttings. Pocket penetrometer values ranged from 0.5 to 4.5+ tsf,
indicating that some areas had likely been previously excavated as possible borrow andbackfilled with fill.
Groundwater
Groundwater was encountered in 6 of the 31 borings at the time of drilling. A summaryof groundwater measurements at the time of drilling, or stabilized 24 hours later prior to
backfilling and presented in the following table. As described herein, piezometers were installedat borings B-04P and B-06P and should be referred to for stabilized groundwater levels within
the embankment. Groundwater levels measured in the borings and summarized below are
based on antecedent rainfall conditions, and may be different at the time of construction.

-12-

Table 4. Summary of Stabilized Groundwater Measurements
BoringMeasurement
Date

GW Measured ATD

GW Measured at least
24 Hrs after drilling

B-01

2/26/1912B-301

11/29/18

18.9

B-302

11/29/18

18.5

B-601

11/27/19

13.4

B-602

11/27/19

10.3

B-102

11/26/19

5.5

5.9

GW – Ground Water
ATD – At the Time of Drilling

INTERPRETATIONS AND CONCLUSIONS
The following interpretations and conclusions are being presented based on the findingsof the field investigation, review of geologic publications and experience with area geology, andour experience with similar construction.
Existing Embankment


Relatively stiff clayey soils were encountered which are indicative of well-compacted
embankment fill. Slightly lower consistency is noted on upstream slope versus
downstream slope based on DCP testing.

No embankment zoning is evident based on visual appearance and fieldclassifications of recovered samples, confirming the homogenous embankment
design as shown on as-built drawings.

Borings suggest the existing core trench was extended through near-surface alluvial
and Leona soils into underlying residuum.

Groundwater was not encountered in the embankment borings drilled during the field
investigation, indicating relatively low permeability of embankment materials.
Foundation
Foundation materials encountered at the upstream and downstream toes of the dam
include suspected clayey fill materials, clayey alluvium, Leona Formation
gravels/clays, clayey residuum, and clayshale at depth.

-13-



A relatively thin (<6 feet) seam of gravelly Leona Formation soils was encounteredright (facing downstream) of original creek centerline at variable depths. This layer isalso shown in the original 1961 Geologic Investigation and may be indicative of aprevious creek meandering.
Coarse-grained nature of these materials may
correspond to a higher permeability zone capable of conveying seepage.



A concealed fault is mapped near the left abutment (near Boring B-01), whichappears to be offsetting Wilcox and Midway Formations. While the fault is inactive
and not capable of producing significant earthquakes, faults may serve as a conduit
for seepage. Additionally, sheared materials within the fault (i.e. gouge) may havelower strengths than adjacent undisturbed units.

Borrow Areas

Borrow areas investigated contain sufficient quantities of clayey soils that may besuitable for embankment fill. The suitability of these materials and estimatedavailable borrow volumes will be confirmed by laboratory testing and supplemental
evaluations performed by AECOM as part of the Soil Mechanics Report.



Groundwater was encountered in one of the borrow area borings (B-102) at a depthof 5.5 feet. Groundwater may limit the practical depth of borrow area excavations
due to the potential needs for dewatering and/or drying saturated borrow materials toan acceptable moisture content prior to use as embankment fill.

GroundwaterLimited groundwater data suggest the embankment and core trench are performing
adequately to limit seepage. No seepage was observed at ground surface during theinvestigation.



Groundwater levels as shallow as 10 feet were measured at the downstream toe.
Dewatering may be needed to maintain dry excavations deeper than about 10 feetbelow existing grade. Note that groundwater levels may fluctuate seasonally and in
response to rainfall conditions and changes in reservoir levels.

Other Considerations


Excavations should proceed without difficulty through materials encountered using
modern excavation equipment, and can be classified as “common” according to
NRCS Construction Specifications.

-14-



Gypsum crystals were noted in some samples. This information, in combination withlocal knowledge of the geologic formations present, suggest site soils may containelevated concentrations of soluble sulfates.

High plasticity clays soils were encountered in the various geologic units the site.
These soils may shrink/swell in response to moisture fluctuations (i.e. expansive soil
behavior), and may be susceptible to long-term weathering / desiccation and loss ofshear strength where exposed to repeated wetting and drying cycles.

CONDITIONS
Since some variation was found in subsurface conditions at boring locations, all parties
involved should take notice that even more variation may be encountered between boring
locations. Statements in the report as to subsurface variation over given areas are intended
only as estimations from the data obtained at specific boring locations.
Findings and engineering interpretations presented in this report are being offered by
Ms. Rebecca A. Russo, PE (signer of this report), and are not being made by Mr. David R.
Mason, PG (co-signer) or by Mr. Pat Cossins, PG (field geologist). Mr. Mason was present onsite during the initial part of the field investigation, and later replaced by Mr. Pat Cossins, PG,
each working under the direction of Balcones Senior Geotechnical Engineer, Ms. Russo; ourclient, AECOM, and the project owner representative, Mr. Bryan Moffat, PG of the NRCS. Mr.
Mason has provided input and review regarding geologic findings presented herein.
The professional services that form the basis for this report have been performed usingthat degree of care and skill ordinarily exercised, under similar circumstances, by reputablegeotechnical engineers practicing in the same locality. No other warranty, expressed or implied,
is made as the professional advice set forth. The results contained in this report are directed at,
and intended to be utilized within, the scope of work contained in the agreement executed by
Balcones Geotechnical, LLC and client. This report is not intended to be used for any otherpurposes.

*

*

-15-

*

PLATESProject No. 0118-039

Project
Site

Source: Google Earth Professional, aerial Imagery dated 12/21/2018

VICINITY MAP
Plum Creek FRS No. 21
Caldwell County, Texas
Plate 1

bp

BORING LOCATION PLAN
Plum Creek FRS No. 21
Caldwell County, Texas

Plate 2a

ING

TT

FM 1185

AUXILIARY SPILLWAY
OUTLET CHANNEL

N
0

75

150

300

SCALE IN FEET

256

606
EXISTING METAL SHEDS

255

254
REHAB DAM, EL. 527.3

253
601

252

251

2

1

602

3

250

4
301

HA-04
REHAB
PRINCIPALSPILLWAY

105

104

HA-02

6
HA-06
HA-05

5

605

604

603
HA-01

HA-03

7

8

9

302
EXISTING DAM

EXISTING
PRINCIPALSPILLWAY

102101

EXISTING NORMAL POOL, EL. 498.8

LEGEND:2014 SOIL BORING107

2018/2019 SOIL BORING
2018/2019 HAND AUGER BORING

108
110
109

United States
Department ofAgriculture

OL

Y
DL

Plate 2bNatural Resources
Conservation Service

ON

THIS DRAWING IS
ISSUED FOR REVIEWONLY UNDER THE
AUTHORITY OF
MICHAEL J. LENHERRTEXAS P.E. #100021
ON June 19, 2019.

D
SR

R
SP

0

200

400

600

800

1,000

1,200

1,400

1,600

1,800

2,000

2,200

2,400

2,600

2,800

3,000

530

530

P=1.75520

B-09

P=2.25B-08

DAM CREST

P=1.75
P=2.5
P=2.75
P=3.75P=1.75
P=4.5
P=4.5
P=4.5

P=3.0
P=3.5
P=4.5+
P=4.5+

N=6-6-7
P=4.5+EMBANKMENT FILL P=4.5+

P=4.5

P=4.5+

P=4.0

P=3.5

P=2.25P=4.5+

P=4.5
P=3.0

P=4.5+

P=4.5+

P=4.5+

P=3.5

P=4.5+
P=3.0
P=2.5

Elevation (ft)

P=2.0

P=3.0

P=2.0

P=4.5+

P=4.5+

P=2.5

P=4.5+

P=2.75

P=4.0

B-03

DAM CREST
P=4.5

P=3.0

P=4.5+

B-02

P=1.0

P=4.0

P=2.75P=4.5+

N=3-5-8

P=1.0
P=3.75

P=2.5

CORE TRENCH

P=4.5+

P=4.5+

P=4.5+

P=3.0

P=1.75P=2.25P=3.25

P=4.0

P=1.75

P=4.0

P=4.0

P=3.25P=4.5+

MIDWAY

P=4.5+

480
CLAYSHALE

P=4.5+

P=4.0

P=4.5+

P=4.5+
P=4.5+

P=3.0

P=4.0

P=4.5

P=4.5+

P=3.5

P=4.5

P=4.5

490

P=3.0
P=2.5
P=3.5
P=3.75

P=2.0

P=4.5+

P=2.0

P=1.5

P=4.5+

MIDWAY

P=4.5+

Possible
Fault

P=50/1"

P=3.5

P=4.5+
P=4.5+

480
P=4.5+

N=10-12-16

P=4.5+

N=6-10-15

N=8-13-15

500

P=4.0

CORE TRENCH

P=4.5+

P=4.5+

P=3.25

P=4.0

P=4.5

P=2.0
P=2.5

- gravelly, cemented 13-15 ft

P=3.5

P=4.5+

510

P=3.75

P=4.5

P=4.5
P=2.0

WILCOX (?)

N=50/2"

P=1.0

N=4-9-11

N=4-4-7

B-01

520

AUXILIARY SPILLWAY(EXISTING)

P=1.75P=4.5+

P=3.5

P=2.25
P=3.75
P=4.0

P=4.5+

P=3.5

P=4.5+

P=4.5

P=3.5
P=2.75EMBANKMENT P=3.5
FILL

P=2.5

P=2.5

P=4.5

490

B-04P

B-05

P=4.5+

P=2.75
P=3.0

P=3.0

P=4.5+

P=0.75P=4.5+

P=4.5

N=4-3-6

500

B-06P

P=1.75
P=3.0
P=2.5
P=3.5
P=4.5+

P=3.0

P=4.0

510

B-07

N=15-21-37
N=10-18-19

P=4.5+

470
N=13-18-22

N=10-14-18

P=4.5+
N=11-14-21

470

CLAYSHALE

N=10-17-20
N=14-21-27

460

450

0

200

400

600

800

1,000

N=10-16-17

N=13-16-21

N=14-12-18

N=11-18-25

1,200

460

1,400

1,600

1,800

2,000

2,200

2,400

2,600

2,800

3,000

450

Distance Along Baseline (NTS)

LITHOLOGY GRAPHICS
USCS Low Plasticity
Clay

USCS High Plasticity
Clay

Weathered Shale

GENERALIZED SUBSURFACE PROFILEEMBANKMENT DAM CENTERLINE
Project: Plum Creek FRS No. 21

Vertical Scale: As Shown
Horizontal Scale: Not to Scale

Location: Caldwell County, TX
Number: 0118-039

Plate 3

0

50

100

150

200

250

300

530

350

400

450

500

550

600

650
530

Dam Crest
B-04P

P=2.0

525

P=2.0
P=4.5+

520

P=4.0
N=3-5-8

515

P=3.0

B-03

525

P=3.0

520

P=2.75
P=1.0
P=3.75

Upstream

515

Downstream

P=2.5
P=3.0

510

510

P=3.5
P=4.5+
P=4.5+

505

P=3.5
N=4-9-11

Embankment Fill505

P=3.75

B-601

B-301

500

P=1.25

P=1.0
P=2.5

Elevation (ft)

P=3.5

P=4.0
P=4.0

P=4.5

495

P=2.75
P=3.5

P=1.75

B-602

Alluvium

Alluvium

P=3.0

490

P=3.0

P=4.5
P=4.5+
N=3-6-10

P=4.0

P=4.5+

MIDWAY

P=3.0

P=4.5

P=4.5+

MIDWAY

P=3.0

P=4.5+

P=4.5+

P=4.5+
P=3.25P=4.5+

490

P=4.5
P=3.5
N=5-7-8

480
SIMPLE FENCE - 11X17 PLUM 0118-039 PLUM CREEK 21.GPJ 0118-039 PLUM CREEK 21.GPJ 06/23/19 19:05

495

P=2.5

P=3.5

485

500
REC/
RQD

Principal Spillway Invert (Approx)

485

P=4.0

480

P=4.5+
P=4.5+
P=4.5+

N=8-12-15

475

P=4.5+

P=4.5+

475

N=15-21-37
P=4.5+
P=4.5+

470

N=10-16-19

N=14-21-27

465

465

N=11-16-30

460

455

470

P=4.5+

0

50

100

150

200

250

300

350

400

450

460

500

550

600

650

455

Distance Along Baseline (ft)

LITHOLOGY GRAPHICS
USCS High Plasticity
Clay

Weathered Shale

USCS Low Plasticity
Clay

GENERALIZED SUBSURFACE PROFILECROSS-SECTION
Project: Plum Creek FRS No. 21

Vertical Scale 1" = 10.3'
Horizontal Scale 1" = 52.0'

Location: Caldwell County, TX
Number: 0118-039

Plate 4

0

50

100

150

200

250

300

350

450

400

500

550

600

650

530

530

DAM CREST
B-06P

P=4.5+

P=4.5+

P=4.5+

P=2.5

P=4.5+

P=2.75

P=4.0

P=2.5

P=2.5

EMBANKMENT P=1.75
P=2.25FILL
P=3.25

P=3.0

P=2.75
P=3.0

N=4-4-7
P=4.5

520

510

B-302

P=0.5

N=8-10-13500

P=4.5+

P=4.5

N=10-18-15

B-05

B-04P

P=2.0
P=2.0

P=4.5+

P=4.0

N=3-5-8

P=2.5

510
P=4.5+
P=4.5+
N=4-9-11

B-604

EMBANKMENT P=0.25
FILL
N=3-6-7

N=8-9-11
P=4.5+

P=3.0

P=4.5+
P=4.5+

480

P=2.0

P=4.5+

P=2.0

P=1.5

P=4.5+

P=4.5+

N=6-10-15

B-602

B-606

P=2.5

P=1.0

P=4.5

P=3.0

P=4.5+

P=4.5

P=2.75

P=3.5

P=2.5

P=4.5+

P=4.5+

P=4.5+

N=8-10-10

P=4.5+

P=4.5+

P=4.5+

P=4.5+

N=10-18-18

P=4.5+

P=4.5+

N=10-12-16

B-603

P=2.25P=4.5+

P=3.5

P=2.5
P=3.5
P=3.75MIDWAY500

N=7-11-25

P=4.0

P=3.0
P=4.5+

520

Auxiliary RCC Spillway El. 518.8 ft

P=4.0

P=4.5

P=2.0
P=2.5

P=4.5+

490

P=4.5+

P=4.5
P=2.0

N=16-16-13
P=3.75

Elevation (ft)P=0.75P=1.75
P=3.0
P=2.5
P=3.5
P=4.5+

P=1.5

490

P=4.5+
N=5-7-8
P=4.0
P=4.5+

480

N=8-11-15

MIDWAY

P=4.5+
P=4.5+

P=4.5+
N=10-17-23
P=4.5+

P=4.5+

P=4.5+

N=11-14-21

470

N=9-16-20
P=4.5

CLAYSHALE

CLAYSHALE

P=4.5+

N=10-17-20

N=10-14-18

P=4.5+

N=14-21-27

P=4.5+

470

P=4.5+

N=10-16-19

P=4.5+
P=4.5+

N=13-16-21

N=10-16-17

460

N=10-17-22
N=12-19-26

N=12-18-21

450

440

460

P=4.5+

N=11-18-25

N=14-12-18

N=11-16-30

0

50

100

150

200

250

300

350

400

450

450

500

550

600

650

440

Distance Along Baseline (NTS)

LITHOLOGY GRAPHICS
USCS Low Plasticity
Clay

USCS High Plasticity
Clay

Weathered Shale

USCS Clayey Gravel

GENERALIZED SUBSURFACE PROFILEAUXILIARY SPILLWAY
Project: Plum Creek FRS No. 21

Vertical Scale: As Shown
Horizontal Scale: Not to Scale

Location: Caldwell County, TX
Number: 0118-039

Plate 5

0

100

200

300

400

500

600

700

800

900

1,000

1,100

1,200

1,300

1,400

505

505
B-604

P=0.25

B-605

FILL

P=1.5

B-601

Ground Surface

500

P=1.25N=7-11-25

P=1.75

N=3-6-7
P=4.5+ALLUVIUM/LEONA

FILL
P=4.5+

MIDWAY

P=4.5+

MIDWAY

P=4.5+

Elevation (ft)

490

P=4.5

485

N=5-7-8

N=8-10-10

MIDWAY
P=4.0

P=4.5+

P=4.5+

P=3.75P=4.5+
P=3.25480

P=4.5+
P=4.5+

P=4.5+

P=4.5+

P=4.5+

N=10-18-18

475

P=3.0

ALLUVIUM

P=3.5

P=4.5+

P=4.5+

480

P=4.5

P=4.5+

P=4.5+

485

P=4.0

P=3.0

P=4.5

P=3.75495

P=2.5

P=2.25P=4.5+

490

B-602

B-603

495
N=12-13-12500

P=4.5+

P=4.5+

P=4.5+

475

P=4.5+
N=10-17-23
N=9-16-20

P=4.5+

P=4.5+

P=4.5

470

P=4.5+

CLAYSHALE

470

CLAYSHALE

P=4.5+
P=4.5+

465

N=10-16-19

465

P=4.5+
P=4.5+
N=11-16-30

N=10-17-22

460

460

N=12-19-26
P=4.5+

455

455

N=12-18-21

450

445

0

100

200

300

400

500

600

700

450

800

900

1,000

1,100

1,200

1,300

1,400

445

Distance Along Baseline (NTS)

LITHOLOGY GRAPHICS
USCS High Plasticity
Clay

Weathered Shale

USCS Clayey Gravel

GENERALIZED SUBSURFACE PROFILEDOWNSTREAM TOE
Project: Plum Creek FRS No. 21

Vertical Scale: As Shown
Horizontal Scale: Not to Scale

Location: Caldwell County, TX
Number: 0118-039

Plate 6

Project No. 0118-039

CME 75 used to drill Dam Crest Embankment Borings (B-01 – B-09)

Geoprobe rig equipped with geotechnical samplers using to drill borrow borings(using direct push) and B-300 and B-600 borings (geotechnical sampling)

FIELD DRILLING EQUIPMENT PHOTOS
Plum Creek FRS No. 21
Caldwell County, Texas
Plate 7

Project No. 0118-039

Project
Site

Source: Earth Point Topo Map, Lockhart North Quadrangle (1994) superimposed into Google Earth Professional

USGS TOPOGRAPHIC MAP
Plum Creek FRS No. 21
Caldwell County, Texas
Plate 8LEGEND (Youngest to Oldest)
Qal – Alluvium, terrace deposits
Qle – Leona Formation (Alluvium)
Ewi – Wilcox Formation
Emi – Midway Formation
Kknm – Navarro Group

Project No. 0118-039

Project
Site

Source: https://txpub.usgs.gov/txgeology/

GEOLOGIC MAP
Plum Creek FRS No. 21
Caldwell County, Texas

Plate 9

Project No. 0118-039

Source: https://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx

USDA SOIL SURVEY MAP
Plum Creek FRS No. 21
Caldwell County, Texas
Plate 10

APPENDIX A
Embankment Dam Borings and Sample Photographs

TERMS AND SYMBOLS USED ON BORING LOGS FOR SOIL
SOIL TYPES
CLAY (CH)SHALY CLAY (CH)

CLAY (CL)SANDY CLAY (CL)

Well-Graded
SAND (SW)

Poorly-Graded
SAND (SP)SILTY SAND (SM)

CLAYEY SAND (SC)

Well-Graded
GRAVEL (GW)

Poorly-Graded
GRAVEL (GP)SILTY GRAVEL (GM)FILL
Material

SOIL GRAIN SIZE
U.S.STANDARD SIEVE

12"

10
40
3/4"
200
4
GRAVELSAND
BOULDERS COBBLESCOARSEFINE
COARSE MEDIUM
FINE
76.2
19.1
2.00
0.420
0.074
304
4.76
3"

SILT

CLAY
0.002

SOIL GRAIN SIZE IN MILIMETERS(2)

STRENGTH OF COHESIVE SOILSDENSITY OF GRANULAR SOILSCONSISTENCYUNDRAINEDCOMPRESSIVE STRENGTH
Tons Per Sq. Ft.

NUMBER OF BLOWSPER FT., N

RELATIVE
DENSITY

Very SoftLess Than 0.25

0-4

Very LooseSoft

0.25 to 0.50

4-10

Loose

Firm

0.5 to 1.00

10-30

MediumStiff

1.00 to 2.00

30-50

Dense

Very Stiff

2.00 to 4.00

Over 50

Very Dense

Hard

greater than 4.00

(2)

DESCRIPTIVE TERMS FOR SOIL (1)DESCRIPTION
Stratified

Laminated

Fissured

CRITERIA

MOISTURE

Alternating layers of varying
material or color with layers
at least 6 mm thick.

Dry

Alternating layers of varying
material or color with thelayers less than 6 mm thick.

Very Moist

Breaks along definite planes offracture with little resistanceto fracturing.

Slickensided

Fracture planes appear polishedor glossy, sometimes striated.

BlockyCohesive soil that can be broken
down into small angular lumps
which resist further breakdown.

LensedInclusions of small pockets ofdifferent soils.

Moist

Wet

No water evident in sample; fines lessthan plastic limit.
Sample feels damp; fines near the plastic
limit
Water visible on sample; fines greater
plastic limit and less than liquid limit
Sample bears free water; fines greaterthan liquid limit.
INCLUSIONS

Parting
Seam
Layer
Trace
Few
LittleWith(1)

Inclusion <1/8" thick extending throughsampleInclusion 1/8" to 3" thick extending
through sample.
Inclusion >3" thick extending throughsample.
<5% of sample.
5% to 10% of sample.
15 to 25% of sample.
15% to 29% of sample.

NOTE: Information on each boring log is a compilation of subsurface conditions and soil and rock classifications obtained
from the field as well as from laboratory testing of samples. Strata have been interpreted from commonly accepted
procedures. The stratum lines on the logs may be transitional and approximate in nature. Water levelmeasurements refer only to those observed at the times and places indicated, and may vary with time, geologic
condition or construction activity.
REFERENCES:

1) ASTM D 2488

2) Peck, Hanson and Thornburn, (1974), Foundation Engineering.

TERMS AND SYMBOLS USED ON BORING LOGS FOR ROCKROCK TYPESSAMPLER TYPESLIMESTONESHALESANDSTONE

Thinwalled
Tube

Rock
Core

WEATHEREDLIMESTONE

WEATHEREDSHALE

WEATHEREDSANDSTONE

Standard
Penetration
Test

Auger
SampleHIGHLY WEATHEREDLIMESTONE

ARGILLACEOUS
LIMESTONEMARLTHD Cone
Penetration
Test

Bag
SampleWEATHERING GRADES OF ROCKMASS(1)SOLUTION & VOID CONDITIONSVoidInterstice; a general term for porespace or other openings in rock.

Cavities

Small solutional concavities.

Vuggy

Containing small cavities, usually
lined with a mineral of different
composition from that of thesurrounding rock.

Vesicular

Containing numerous small, unlined
cavities, formed by expansion of gas
bubbles or steam during solidificationof the rock.

PorousContaining pore, interstices, orother openings which may or may notinterconnect.

Cavernous

Containing cavities or caverns,
sometimes quite large. Most frequentin limestones and dolomites.

Slightly

Discoloration indicates
weathering of rock material
and discontinuity surfaces.

Moderately

Less than half of the rockmaterial is decomposed ordisintegrated to a soil.

HighlyMore than half of the rockmaterial is decomposed ordisintegrated to a soil.

Completely

All rock material isdecomposed and/or
disintegrated to soil.The
original mass structure is
still largely intact.

Residual SoilAll rock material isconverted to soil.The
mass structure and material
fabric are destroyed.

BEDDING THICKNESS (2)HARDNESSFriableLow Hardness
Moderately Hard
Very Hard

Very Thick
Thick
Thin
Very Thin
Laminated
Thinly-LaminatedCrumbles under hand pressure
Can be carved with a knife
Can be scratched easily with a knife
Cannot be scratched with a knife

>4'
2'-4'
2"-2'
1/2"-2"0.08"-1/2"<0.08"JOINT DESCRIPTIONINCLINATIONSPACING
Very Close
Close
Medium Close
Wide

<2"
2"-12"
12"-3'>3'

Horizontal
Shallow
Moderate
Steep
Vertical

0-5
5-35
35-65
65-85
85-90

SURFACES
Slickensided
SmoothIrregular
Rough

Polished, grooved
PlanarUndulating or granular
Jagged or pitted

NOTE: Information on each boring log is a compilation of subsurface conditions and soil and rock classificaitonsobtained from the field as well as from laboratory testing of samples. Strata have been interpreted by commonly
accepted procedures. The stratum lines on the logs may be transitional and approximate in nature. Water levelmeasurements refer only to those observed at the times and places indicated, and may vary with time, geologic
condition or construction activity.
REFERENCES: 1) British Standard(1981) Code of Practice for Site Investigation

BS 5930.
2) The Bridge Division, Texas Highway Dept. Foundation Exploration & Design Manual,
2nd Edition,revised June,1974.

LOG OF BORING NO. B-01
Plum Creek FRS No. 21
Caldwell County, TX

P=1.75P=4.0

5

P=4.5+

Tan and gray FAT CLAY, stiff to very stiff, w/ferrous
staining, silt seams and partings. CH (Wilcox)

Tan and reddish tan FAT CLAY, stiff to hard,
w/ferrous staining and cemented layers, sand seams
and silt partings. CH (Wilcox)

514.9
1.0

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 516±

Dark brown LEAN CLAY, stiff, moist, w/sand andorganics. (Topsoil)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898288.300000
EASTING: 2395939.904000

28

23

510.9
5.0

25

P=1.7510
N=50/2"- No sample recovery from 11.5 to 14 ft (fell from tube
during removal from borehole)- hard drilling (cemented) from 13 to 15 ft

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

P=3.25

Tan and gray FAT CLAY, very stiff, w/ferrous staining,
sand seams and silt partings. CH (Wilcox)

500.9
15.0

21

P=4.0

20

P=4.5+

Gray to dark gray CLAYSHALE, hard, dry to moist,laminated, fissile, w/light gray silt seams andpartings. (Wilcox)

495.9
20.0

P=4.5

20

P=3.5

17

25

485.9

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 30.0

KEY:

DATE DRILLED: 2-26-19
WATER LEVEL / SEEPAGE: 12.0

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 1a

LOG OF BORING NO. B-01
Plum Creek FRS No. 21
Caldwell County, TX

35

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 516±

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898288.300000
EASTING: 2395939.904000

30.0

NOTES:
1. Boring was advanced dry to the 30 ft depth, andperched groundwater was encountered at the 12 to
12.5 ft depth, at the time of boring.
2. The boring was advanced using a truck mounted
CME 55.
3. Shelby tube samples were collected for the NRCS
at 5-7.5 ft, 11.5-14 ft, 17.5-20 ft, and 20-22.5 ft

40

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 30.0

KEY:

DATE DRILLED: 2-26-19
WATER LEVEL / SEEPAGE: 12.0

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 1b

Project No. 0118-039

2/26/19
0 - 2 ft

2/26/19
2 - 4 ft

2/26/195 - 7.5 ft

SAMPLE PHOTOGRAPHS – B-01
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 4

Project No. 0118-039

2/26/19
8 - 10 ft

2/26/19
10 - 12 ft

2/26/1915 - 17 ft

SAMPLE PHOTOGRAPHS – B-01
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 4

Project No. 0118-039

2/26/1917.5 - 20 ft

2/26/19
20 – 22.5 ft

2/26/1923 - 25 ft

SAMPLE PHOTOGRAPHS – B-01
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 4

Project No. 0118-039

2/26/1928 - 30 ft

SAMPLE PHOTOGRAPHS – B-01
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 4

LOG OF BORING NO. B-02
Plum Creek FRS No. 21
Caldwell County, TX

P=4.5

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %SURF. ELEVATION: 523±

Tan, gray and brown FAT CLAY, stiff to hard, w/sand,scattered gravel, and few organics. CH (Fill)

13

15

P=1.0

5

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898192.220000
EASTING: 2395458.651000

P=4.5+

P=4.0

10

P=4.0

- dark brown from 10 to 14 ft

16

16

P=3.25

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 16:14

15

20

P=4.5+- reddish tan from 15 to 18 ft

P=4.5+

Grayish brown FAT CLAY, very stiff to hard, moist,
w/sand and dark brown clay pockets. CH (Core
Trench)

505.5
18.0

20

P=1.0

P=3.5

Tan and gray FAT CLAY, hard, blocky, w/ferrous
staining, sand seams and silt partings. CH (Midway)

501.5
22.0
17

25

17

P=4.5+

493.5

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 38.0

KEY:

DATE DRILLED: 2-27-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 2a

LOG OF BORING NO. B-02
Plum Creek FRS No. 21
Caldwell County, TX

P=4.5+UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 523±

Tan and gray CLAYSHALE, weathered, w/sandseams and silt partings. (Midway)

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898192.220000
EASTING: 2395458.651000

30.0

13

P=4.5

35

P=50/1"

485.5
38.0

40

NOTES:
1. Boring was advanced dry to the 37.5-ft depth, andgroundwater was not encountered at the time ofdrilling.
2. The boring was advanced using a truck mounted
CME 55.
3. Shelby tube samples were collected by the NRCS
at 5-7.5 ft, 15-17.5 ft, 20-22.5 ft, and 30-32.5.

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 16:14

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 38.0

KEY:

DATE DRILLED: 2-27-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 2b

Project No. 0118-039

2/27/19
0 - 2 ft

2/27/19
2 - 4 ft

2/27/195 - 7.5 ft

SAMPLE PHOTOGRAPHS – B-02
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 5Project No. 0118-039

2/27/19
8 - 10 ft

2/27/19
10 - 12 ft

2/27/19
13 - 15 ft

SAMPLE PHOTOGRAPHS – B-02
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 5Project No. 0118-039

2/27/19
15 – 17.5 ft

2/27/19
18 – 20 ft

2/27/19
20 – 22.5 ft

SAMPLE PHOTOGRAPHS – B-02
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 5Project No. 0118-039

2/27/1923 - 25 ft

2/27/1928 - 30 ft

2/27/1930 – 32.5 ft

SAMPLE PHOTOGRAPHS – B-02
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 5Project No. 0118-039

2/27/1933 - 35 ft

2/27/19
37 – 38.5 ft

SAMPLE PHOTOGRAPHS – B-02
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 5

LOG OF BORING NO. B-03
Plum Creek FRS No. 21
Caldwell County, TX

P=3.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

20

UNCONFINEDSTRENGTH
TSF

20- dry from 8 to 15 ft

12

P=3.75

16

P=3.0

15

UNIT DRYWEIGHT, PCF

16

P=2.75

P=1.0

10

PASSING NO.
200 SIEVE, %SURF. ELEVATION: 525±

Tan, gray and brown FAT CLAY, stiff to hard, w/sand,scattered gravel, and few organics. CH (Fill)

P=3.0

5

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898130.250000
EASTING: 2395100.308000

P=3.5- dark brown from 15 to 22 ft

18

P=3.5

16

P=3.5

17

P=3.7525
Grayish brown FAT CLAY, very stiff to hard, moist,
w/sand and dark brown clay pockets. CH (Core
Trench)

498.9
26.0

18

P=4.0

494.9

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 52.0

KEY:

DATE DRILLED: 2-27-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 3a

LOG OF BORING NO. B-03
Plum Creek FRS No. 21
Caldwell County, TX
UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %

30.0

19

P=4.5+

35

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 525±

Tan and gray FAT CLAY, hard, blocky, w/ferrous
staining, sand seams and silt partings. CH (Midway)

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898130.250000
EASTING: 2395100.308000

P=4.5

23

P=4.5+

40

P=4.5+PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

Gray to dark gray CLAYSHALE, hard, dry to moist,laminated, fissile, w/light gray silt seams andpartings. (Midway)

481.9
43.0

20

19

P=4.5+

50

21
N=15-21-37

472.9
52.0

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 52-ft depth, andgroundwater was not encountered at the time ofdrilling.
2. The boring was advanced using a truck mounted
CME 55.
3. Shelby tube samples were collected by the NRCS
at 5-7.5 ft, 10-12.5 ft, 22.5-25 ft, and 35-37.5 ft.

COMPLETION DEPTH: 52.0

KEY:

DATE DRILLED: 2-27-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 3b

Project No. 0118-039

2/26/19
0 - 2 ft

2/26/19
2 - 4 ft

2/26/195 - 7.5 ft

SAMPLE PHOTOGRAPHS – B-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 6

Project No. 0118-039

2/26/19
8 - 10 ft

2/26/19
10 – 12.5 ft

2/26/19
13 - 15 ft

SAMPLE PHOTOGRAPHS – B-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 6

Project No. 0118-039

2/26/19
15 – 17 ft

2/26/19
18 – 20 ft

2/26/19
20 – 22 ft

SAMPLE PHOTOGRAPHS – B-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 6

Project No. 0118-039

2/27/1922.5 - 25 ft

2/27/1928 - 30 ft

2/27/19
33 – 35 ft

SAMPLE PHOTOGRAPHS – B-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 6

Project No. 0118-039

2/27/1935 – 37.5 ft

2/27/19
38 – 40 ft

2/27/19
43 – 45 ft

SAMPLE PHOTOGRAPHS – B-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 6

Project No. 0118-039

2/27/1948 – 50 ft

2/27/1950 – 51.5 ft

SAMPLE PHOTOGRAPHS – B-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 6 of 6

LOG OF BORING NO. B-04P
Plum Creek FRS No. 21
Caldwell County, TX

P=2.0

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 526±

Light brown SANDY LEAN CLAY, very stiff, w/darkgray fat clay pockets, scattered gravel and organics.
CL (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898060.500000
EASTING: 2394711.340000

14

P=2.0

19

P=4.5+

17

5
P=4.0

N=3-5-8

19

P=2.5

22

P=4.5+

16

10

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

20

P=4.5+

Dark brown FAT CLAY, very stiff to hard, w/tan clay
layers, silt, sand, small gravel and scatteredorganics. CH (Fill)

506.0
20.0

N=4-9-11

18

P=4.0

17

25

496.0

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 62.0

KEY:

DATE DRILLED: 12-21-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 4a

LOG OF BORING NO. B-04P
Plum Creek FRS No. 21
Caldwell County, TX
UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %

30.0

21

P=3.0

35

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 526±

Light brown, tan and gray FAT CLAY, very stiff, moist,
w/sand, silt, small gravel and scattered organics. CH(Core Trench)

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898060.500000
EASTING: 2394711.340000

P=3.5

P=3.0

Tan, reddish tan and gray FAT CLAY, hard, moist,
blocky, w/ferrous staining, calcareous nodules, sandand silt seams and partings. CH (Midway)

489.0
37.0

26

40

P=4.5+PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

23

P=4.5+

50

Gray to dark gray CLAYSHALE, hard, dry to moist,laminated, fissile, w/light gray silt seams andpartings. (Midway)

476.0
50.0

22

P=4.5+

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 62.0

KEY:

DATE DRILLED: 12-21-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 4b

LOG OF BORING NO. B-04P
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 526±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898060.500000
EASTING: 2394711.340000

21
N=14-21-27

464.0
62.0

65

70

NOTES:
1. Boring was advanced dry to the 61.5-ft depth, andgroundwater was not encountered at the time ofdrilling.
2. The boring was advanced using a truck mounted
CME 75.
3. Shelby tube samples were collected by the NRCS
at 5-7.5 ft, 10-12.5 ft, 20-22.5 ft, 35-37.5 ft, and43-45.5 ft
4. A 2-inch diameter piezometer was installed in thecompleted borehole, screened from 60 to 40 ft, andsolid riser to the ground surface.

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

75

80

85

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 62.0

KEY:

DATE DRILLED: 12-21-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 4c

Project No. 0118-039

12/18/18
0 - 2 ft

12/18/18
2 - 4 ft

12/18/18
4 - 6 ft

SAMPLE PHOTOGRAPHS – B-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 6

Project No. 0118-039

12/18/18
6 - 8.5 ft

12/18/18
8.5 - 10 ft

12/18/18
10 - 12.5 ft

SAMPLE PHOTOGRAPHS – B-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 6

Project No. 0118-039

12/18/18
13 - 15 ft

12/18/18
18 – 20 ft

12/18/18
20 – 22.5 ft

SAMPLE PHOTOGRAPHS – B-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 6

Project No. 0118-039

12/18/18
22.5 - 24 ft

12/18/18
28 - 30 ft

12/18/18
33 – 35 ft

SAMPLE PHOTOGRAPHS – B-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 6

Project No. 0118-039

12/18/18
35 – 37.5 ft

12/21/18
38.5 – 40.5 ft

12/21/18
43 – 45.5 ft

SAMPLE PHOTOGRAPHS – B-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 6

Project No. 0118-039

12/21/18
48 – 50 ft

12/21/18
53 – 55 ft

12/21/18
60 – 62 ft

SAMPLE PHOTOGRAPHS – B-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 6 of 6

LOG OF BORING NO. B-05
Plum Creek FRS No. 21
Caldwell County, TX

P=0.75

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 525±

Light brown, tan and gray FAT CLAY, stiff to hard, dry
to moist, w/sand and silt seams, calcareous nodules,
and small gravel. CH (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898019.280000
EASTING: 2394475.342000

16

P=4.5+

22

P=4.5+

125

P=4.5+

10

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

P=4.5+

17

P=4.0

15

P=2.5

P=3.0

20

20

P=4.5

- dark gray silty, from 20 to 24 ft

20
N=4-4-7

P=4.5

16

P=4.5+

22

25

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 70.0

KEY:

DATE DRILLED: 12-18-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 5a

LOG OF BORING NO. B-05
Plum Creek FRS No. 21
Caldwell County, TX

P=4.5

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 525±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898019.280000
EASTING: 2394475.342000

Light brown, tan and gray FAT CLAY, stiff to hard, dry
to moist, w/sand and silt seams, calcareous nodules,
and small gravel. CH (Fill) (continued)

P=4.0

18

35

P=2.0

19

P=2.0

27

40

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

P=4.5+

Gray and light brown sandy FAT CLAY, very stiff tohard, moist, w/ferrous staining, calcareous nodules,
sand and silt seams and partings. CH (Midway)

480.1
45.0

N=6-10-15

24

N=11-14-21

24

50

55

N=10-17-20

23

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 70.0

KEY:

DATE DRILLED: 12-18-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 5b

LOG OF BORING NO. B-05
Plum Creek FRS No. 21
Caldwell County, TX

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings.
N=13-16-21(Midway)

N=11-18-25

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %

462.1
63.0
22

455.1
70.0

70

75

PASSING NO.
4 SIEVE, %SURF. ELEVATION: 525±

Gray and light brown sandy FAT CLAY, very stiff tohard, moist, w/ferrous staining, calcareous nodules,
sand and silt seams and partings. CH (Midway)(continued)

65

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898019.280000
EASTING: 2394475.342000

21

NOTES:
1. Boring was advanced dry to the 70-ft depth, andthe borehole was dry upon completion.
2. The boring was advanced using a truck mounted
CME 75.
3. Shelby tube samples were collected by the NRCSat 7.5-10 ft, 15-17.5 ft, 20-22 ft, 30-32.5, 45-47.5 ft.

80

85

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 70.0

KEY:

DATE DRILLED: 12-18-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 5c

Project No. 0118-039

12/17/18
0 - 2 ft

12/17/18
2 - 4 ft

12/17/18
4 - 6 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 8Project No. 0118-039

12/17/18
7.5 - 10 ft

12/17/18
10 - 12 ft

12/17/18
12 - 14 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 8Project No. 0118-039

12/17/18
15 – 17.5 ft

12/17/18
17.5 – 19.5 ft

12/17/18
20 – 22 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 8Project No. 0118-039

12/17/18
22 – 23.5 ft

12/17/18
24 - 25 ft

12/17/18
28 – 30 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 8Project No. 0118-039

12/17/18
30 – 32.5 ft

12/17/18
33 - 35 ft

12/17/18
38 - 40 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 8Project No. 0118-039

12/17/18
43 - 45 ft

12/17/18
45 – 47.5 ft

12/17/18
48.5 - 50 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 6 of 8Project No. 0118-039

12/17/18
53.5 - 55 ft

12/17/18
58.5 - 60 ft

12/18/18
63.5 - 65 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 7 of 8Project No. 0118-039

12/18/18
68.5 - 70 ft

SAMPLE PHOTOGRAPHS – B-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 8 of 8

LOG OF BORING NO. B-06P
Plum Creek FRS No. 21
Caldwell County, TX

P=1.75
P=3.0
P=2.5
P=3.5

Tan and gray FAT CLAY, very stiff to hard, dry tomoist, w/sand, siltly seams, calcareous nodules, andsmall gravel. CH (Fill)

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 525±

Dark brown FAT CLAY, stiff to very stiff, moist,
w/sand, roots, and organics. CH (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897994.380000
EASTING: 2394329.557000

13
523.1
2.0

22

14

P=4.5+

5

P=4.5+

10

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

P=2.5

17

P=2.75

21

P=2.5

28

P=1.75P=2.2520

P=3.2519

P=2.75
P=3.0

25

P=4.5

- Dark brown FAT CLAY layer from 28 - 29 ft

17

P=2.0

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 70.0

KEY:

DATE DRILLED: 12-6-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 6a

LOG OF BORING NO. B-06P
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 525±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897994.380000
EASTING: 2394329.557000

Tan and gray FAT CLAY, very stiff to hard, dry tomoist, w/sand, siltly seams, calcareous nodules, andsmall gravel. CH (Fill) (continued)
19

P=2.0
P=2.5

35

Grayish brown FAT CLAY, very stiff to hard, moist,
w/sand and dark brown clay pockets. CH (Core
Trench)

490.1
35.0

21

P=2.5
P=3.5

40

P=3.75

Gray and light brown FAT CLAY, very stiff to hard,moist, w/ferrous staining, calcareous nodules, sandand silt seams and partings. CH (Midway)

485.1
40.0

27

P=4.5+PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

P=1.5

N=10-12-16 Dark gray CLAYSHALE, hard, dry to moist, laminated,

477.6
47.5

25

fissile, w/light gray silt seams and partings.
(Midway)50

21

P=4.5+

55

N=10-14-18

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

22

COMPLETION DEPTH: 70.0

KEY:

DATE DRILLED: 12-6-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 6b

LOG OF BORING NO. B-06P
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 525±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897994.380000
EASTING: 2394329.557000

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings.
(Midway) (continued)

23

N=10-16-17

65

N=14-12-18- moist at 69 ft

70

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

75

455.1
70.0

24

NOTES:
1. Boring was advanced dry to the 70-ft depth, andthe borehole was dry upon completion.
2. The boring was advanced using a truck mounted
CME 75.
3. Shelby tube samples were collected by the NRCSat 7.5-10 ft, 15-17.5 ft, 20-22.5 ft, 40-42.5 ft, and45-47 ft.
4. A 2-inch diameter piezometer was installed in thecompleted borehole, screened from 70 to 50 ft, andsolid riser to the ground surface.

80

85

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 70.0

KEY:

DATE DRILLED: 12-6-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 6c

Project No. 0118-039

12/04/18
0 - 2 ft

12/04/18
2 - 4 ft

12/04/18
4 - 6 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 7

Project No. 0118-039

12/05/18
7.5 - 10 ft

12/05/18
10 - 12 ft

12/05/18
12 - 14 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 7

Project No. 0118-039

12/05/18
15 – 17.5 ft

12/05/18
18 -20 ft

12/05/18
20 – 22.5 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 7

Project No. 0118-039

12/05/18
23 - 25 ft

12/05/18
28 - 30 ft

12/05/18
33 - 35 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 7

Project No. 0118-039

12/05/18
38 - 40 ft

12/05/18
40 – 42.5 ft

12/05/18
43 - 45 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 7

Project No. 0118-039

12/05/18
45 - 47 ft

12/05/18
47 – 48.5 ft

12/05/18
53 - 55 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 6 of 7

Project No. 0118-039

12/05/18
58.5 - 60 ft

12/05/18
68.5 - 70 ft

SAMPLE PHOTOGRAPHS – B-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 7 of 7

LOG OF BORING NO. B-07
Plum Creek FRS No. 21
Caldwell County, TX

P=1.75
P=2.5

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 526±

Light brown, tan and gray FAT CLAY, very stiff tohard, dry to moist, w/sand and silt seams, calcareous
nodules, and small gravel. CH (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897963.440000
EASTING: 2394153.397000

1217

P=2.75
P=3.7513

515
N=6-6-7

P=4.5+

10

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 17:54

15

P=4.5+

16

P=3.5

17

P=4.5+

P=4.5

21

20

P=4.5+

P=3.5- gray and dark gray FAT CLAY, moist below 22 ft
24

25

26

P=3.0

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 60.0

KEY:

DATE DRILLED: 12-4-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 7a

LOG OF BORING NO. B-07
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 526±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897963.440000
EASTING: 2394153.397000

P=4.5+

P=3.5

35

Gray and light brown FAT CLAY, very stiff to hard,moist, w/ferrous staining, calcareous nodules andpockets, sand and silt seams and partings. CH(Midway)

493.8
32.0
20

P=4.5+

P=4.5+

25

40

25

P=4.5+PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 17:54

45

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings.
(Midway)

480.8
45.0

P=4.5+

21

N=10-18-19

24

50

55

N=13-18-22

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

465.8

22

COMPLETION DEPTH: 60.0

KEY:

DATE DRILLED: 12-4-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 7b

LOG OF BORING NO. B-07
Plum Creek FRS No. 21
Caldwell County, TX

65

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 526±

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897963.440000
EASTING: 2394153.397000

60.0

NOTES:
1. Boring was advanced dry to the 60-ft depth, andthe borehole was dry upon completion.
2. The boring was advanced using a truck mounted
CME 75.
3. Shelby tube samples were collected by the NRCSat 7.5-10 ft, 15-17.5 ft, 20-22.5 ft, 30-32.5 ft, and35-37.5 ft.

70

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 17:54

75

80

85

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 60.0

KEY:

DATE DRILLED: 12-4-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 7c

Project No. 0118-039

12/04/18
0 - 2 ft

12/04/18
2 - 4 ft

12/04/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 7

Project No. 0118-039

12/04/18
6 – 7.5 ft

12/04/18
7.5 - 10 ft

12/04/18
10 - 12 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 7

Project No. 0118-039

12/04/18
12 - 14 ft

12/04/18
15 -17.5 ft

12/04/18
17.5 – 19.5 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 7

Project No. 0118-039

12/04/18
20 – 22.5 ft

12/04/18
22.5 – 24.5 ft

12/04/18
28 - 30 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 7

Project No. 0118-039

12/04/18
30 – 32.5 ft

12/04/18
33 – 35 ft

12/04/18
35 – 37.5 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 7

Project No. 0118-039

12/04/18
38 - 40 ft

12/04/18
43 – 45 ft

12/04/18
48 - 50 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 6 of 7

Project No. 0118-039

12/04/18
53.5 - 55 ft

12/04/18
58.5 - 60 ft

SAMPLE PHOTOGRAPHS – B-07
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 7 of 7

LOG OF BORING NO. B-08
Plum Creek FRS No. 21
Caldwell County, TX

Dark brown FAT CLAY, very stiff, moist, w/sand,roots, and organics. CH (Fill)

P=1.75

Tan, reddish brown, and gray FAT CLAY, very stiff tohard, dry to moist, w/sand, siltly seams, calcareous
nodules, and small gravel. CH (Fill)

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %

22
522.6
2.0

16

12

P=4.5

5

PASSING NO.
4 SIEVE, %SURF. ELEVATION: 525±

P=2.25

P=4.5

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897883.960000
EASTING: 2393699.533000

P=4.5

P=4.5+

19

10

15

P=4.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

P=4.5

- dark gray FAT CLAY at 15 ft

P=3.0- moist below 18 ft

18

20

P=3.0

18

P=2.5

19

25

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 50.0

KEY:

DATE DRILLED: 12-3-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 8a

LOG OF BORING NO. B-08
Plum Creek FRS No. 21
Caldwell County, TX

P=4.5

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %21

PASSING NO.
4 SIEVE, %

491.6
33.0

SURF. ELEVATION: 525±

Tan, reddish brown, and gray FAT CLAY, very stiff tohard, dry to moist, w/sand, siltly seams, calcareous
nodules, and small gravel. CH (Fill) (continued)

P=2.7535LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897883.960000
EASTING: 2393699.533000

Gray and light brown FAT CLAY, very stiff to hard,moist, w/ferrous staining, calcareous nodules, sandand silt seams and partings. CH (Midway)
P=2.25

P=3.75

28
P=4.0

40

Dark brown and gray CLAYSHALE, hard, dry to moist,laminated, fissile, w/gray silt seams and partings.
(Midway)

484.6
40.0

23

P=4.5+PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

N=8-13-15

474.6
50.0

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

24

NOTES:
1. Boring was advanced dry to the 50-ft depth, andthe borehole was dry upon completion.
2. The boring was advanced using a truck mounted
CME 75.
3. Shelby tube samples were collected by the NRCS
at 5-7.5 ft, 15-17.5 ft, 30-32.5 ft, 35-37.5 ft

COMPLETION DEPTH: 50.0

KEY:

DATE DRILLED: 12-3-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 8b

Project No. 0118-039

12/03/18
0 - 2 ft

12/03/18
2 - 4 ft

12/03/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-08
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 6

Project No. 0118-039

12/03/18
5 - 7.5 ft

12/03/18
7.5 - 9.5 ft

12/03/18
13 - 15 ft

SAMPLE PHOTOGRAPHS – B-08
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 6

Project No. 0118-039

12/03/18
15 - 17.5 ft

12/03/18
18 - 20 ft

12/03/18
23 - 25 ft

SAMPLE PHOTOGRAPHS – B-08
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 6

Project No. 0118-039

12/03/18
28 - 30 ft

12/03/18
30 – 32.5 ft

12/03/18
32.5 – 34.5 ft

SAMPLE PHOTOGRAPHS – B-08
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 6

Project No. 0118-039

12/03/18
35 – 37.5 ft

12/03/18
37.5 – 39.5 ft

12/03/18
43 - 45 ft

SAMPLE PHOTOGRAPHS – B-08
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 6

Project No. 0118-039

12/03/18
48.5 – 50 ft

SAMPLE PHOTOGRAPHS – B-08
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 6 of 6

LOG OF BORING NO. B-09
Plum Creek FRS No. 21
Caldwell County, TX

P=1.75

P=3.0
P=3.5

Brown and gray FAT CLAY, stiff to hard, w/silt, sand,calcareous nodules, scattered gravel, and organics.
CH (Fill)

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %SURF. ELEVATION: 524±

Dark brown FAT CLAY, very stiff, moist, w/sand,roots, and organics. CH (Fill)

16
521.6
2.0

21
18
12
13

P=4.5+

5

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897786.230000
EASTING: 2393149.057000

P=4.5+

P=4.5

16

10

P=4.0

15

15

P=2.25

15
PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

N=4-3-6

Tan and gray FAT CLAY, hard, blocky, w/sand, silt
seams and partings, calcareous pockets, and ferrous
staining. CH (Midway)

508.6
15.0

16

P=4.5+

20

P=4.5+

27

P=4.5+

22

P=4.5+

23

25

493.6

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 30.0

KEY:

DATE DRILLED: 12-3-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 9a

LOG OF BORING NO. B-09
Plum Creek FRS No. 21
Caldwell County, TX

35

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 524±

LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897786.230000
EASTING: 2393149.057000

30.0

NOTES:
1. Boring was advanced dry to the 30-ft depth, andthe borehole was dry upon completion.
2. The boring was advanced using a truck mounted
CME 75.
3. Shelby tube samples were collected by the NRCS
at 5-7.5 ft, and 18-20 ft.

40

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 30.0

KEY:

DATE DRILLED: 12-3-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 9b

Project No. 0118-039

12/03/18
0 - 2 ft

12/03/18
2 - 4 ft

12/03/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-09
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 4

Project No. 0118-039

12/03/18
5 - 7.5 ft

12/03/18
7.5 - 9.5 ft

12/03/18
9.5 - 11 ft

SAMPLE PHOTOGRAPHS – B-09
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 4

Project No. 0118-039

12/03/18
13 - 15 ft

12/03/18
15 - 16.5 ft

12/03/18
18 - 20 ft

SAMPLE PHOTOGRAPHS – B-09
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 4

Project No. 0118-039

12/03/18
20 - 22 ft

12/03/18
23 - 25 ft

12/03/18
28 - 30 ft

SAMPLE PHOTOGRAPHS – B-09
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 4

LOG OF BORING NO. B-301
Plum Creek FRS No. 21
Caldwell County, TX

P=1.0

5
P=2.75

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

24

26

Light brown, tan and gray FAT CLAY, stiff to hard,slightly moist to moist, w/ferrous staining, calcareous
inclusions, and silt partings and seams. CH(Alluvium)

496.1
4.0

20

21

22

P=3.5

10

PASSING NO.
200 SIEVE, %SURF. ELEVATION: 500±

Dark brown sandy FAT CLAY, medium, moist, w/trace
gravel. CH (Fill)

P=2.5

P=4.5

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898193.840000
EASTING: 2394994.979000

Tan and gray FAT CLAY, stiff to hard, slightly moist to
moist, w/ferrous staining, calcareous inclusions, andsilt partings and seams. CH (Midway)

490.1
10.0

P=4.5+
N=3-6-10

26

P=4.5+

25

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 23:15

15

20

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway)
N=8-12-15

478.1
22.0

475.1
25.0

25

24

NOTES:
1. Boring was advanced dry to the 25-ft depth, andthe water level was measured at a depth of 18.92 ft
upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 25.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE: 18.9

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 18a

LOG OF BORING NO. B-301
Plum Creek FRS No. 21
Caldwell County, TX

35

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 500±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898193.840000
EASTING: 2394994.979000

3. Water level readings:
11/29/2018 13:55 water was measured at the 18.9 ft
depth, the borehole was open to 22.0 ft
11/29/2018 14:20 water was measured at the 19.9 ft
depth, the borehole was open to 22.0 ft
11/29/2018 16:49 water was measured at the 8.6 ft
depth, the borehole was open to 18.6 ft
11/30/2018 8:46 water was measured at the 5.9 ft
depth, the borehole was open to 7.8 ft
11/30/2018 15:26 water was measured at the 5.9 ft
depth, the borehole was open to 7.0 ft
11/30/2018 15:30 the borehole was grouted

40

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 23:15

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 25.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE: 18.9

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 18b

Project No. 0118-039

11/29/18
0 - 2 ft

11/29/18
2 - 4 ft

11/29/18
4 - 6 ft

SAMPLE PHOTOGRAPHS – B-301
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 3

Project No. 0118-039

11/29/18
6 - 8 ft

11/29/18
8 - 10 ft

11/29/18
13.5 - 15 ft

SAMPLE PHOTOGRAPHS – B-301
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 3

Project No. 0118-039

11/29/18
18 - 20 ft

11/29/18
23.5 - 25 ft

SAMPLE PHOTOGRAPHS – B-301
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 3

LOG OF BORING NO. B-302
Plum Creek FRS No. 21
Caldwell County, TX

P=0.5

Tan CLAYEY GRAVEL with red clay, medium to
N=8-10-13
dense, wet, subangular to subrounded. GC (Leona)

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 504±

Dark brown FAT CLAY, soft, very moist, w/roots,
organics, and trace gravel. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898023.920000
EASTING: 2394132.010000

19
501.8
2.0

8

6

N=10-18-15

5
N=16-16-13

P=3.7510

Tan and gray FAT CLAY, stiff to hard, slightly moist,
w/ferrous staining, calcareous inclusions, and silt
partings and seams. CH (Midway)

495.8
8.0

28

26

P=4.5+PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 23:18

15

P=4.5+

20

28
N=8-9-11
P=4.5+

25

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway)NOTES:
1. Boring was advanced dry to the 25-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.
3. Water level readings:

479.8
24.0
478.8
25.0

24

COMPLETION DEPTH: 25.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 19a

LOG OF BORING NO. B-302
Plum Creek FRS No. 21
Caldwell County, TX

35

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 504±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898023.920000
EASTING: 2394132.010000

11/29/2018 11:30 the borehole was dry, open to 19.0ft
11/29/2018 16:42 the borehole was dry, open to 19.0ft
11/30/2018 8:35 the borehole was dry, open to 18.7 ft
11/30/2018 16:25 the borehole was dry, open to 18.5ft
11/30/2018 16:30 the borehole was grouted

40

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 23:18

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 25.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 19b

Project No. 0118-039

11/29/18
0 - 2 ft

11/29/18
2 - 3.5 ft

11/29/18
3.5 - 5 ft

SAMPLE PHOTOGRAPHS – B-302
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 3

Project No. 0118-039

11/29/18
5.5 - 7 ft

11/29/18
8 - 10 ft

11/29/18
13 - 15 ft

SAMPLE PHOTOGRAPHS – B-302
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 3

Project No. 0118-039

11/29/18
18 - 20 ft

11/29/18
22 – 23.5 ft

11/29/18
23.5 – 25 ft

SAMPLE PHOTOGRAPHS – B-302
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 3

LOG OF BORING NO. B-601
Plum Creek FRS No. 21
Caldwell County, TX

P=1.25

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 501±

Tan, brown and gray FAT CLAY, stiff, w/sand,scattered gravel, and organics. CH (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898018.330000
EASTING: 2395004.475000

24P=1.75

26

5

P=4.0

10

P=3.0

Light brown, tan and gray FAT CLAY, stiff to hard,slightly moist to moist, w/ferrous staining, calcareous
inclusions, and silt partings and seams. CH(Alluvium)

Tan and gray FAT CLAY, stiff to hard, slightly moist to
moist, w/ferrous staining, calcareous inclusions, andsilt partings and seams. CH (Midway)

494.7
6.0

18
490.7
10.0

P=4.5

23

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

22

P=4.5+
P=3.2520

P=4.5+

25

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway)- wet at 23 ft

477.7
23.0
24
474.7
26.0

NOTES:
1. Boring was advanced dry to the 26-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 26.0

KEY:

DATE DRILLED: 11-27-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 20a

LOG OF BORING NO. B-601
Plum Creek FRS No. 21
Caldwell County, TX

35

40

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 501±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898018.330000
EASTING: 2395004.475000

equipped to obtain geotechnical samples.
3. Shelby tube samples were collected by the NRCSat 5'-6.5', 10'-12.5', and 19'-20.5'.
4. Water level readings:
11/27/2018 10:30 the borehole was dry and open to
23.0 ft
11/28/2018 12:50 water was measured at the 15 ft
depth, the borehole was open to 19.0 ft
11/28/2018 17:10 water was measured at the 14.5 ft
depth, the borehole was open to 19.0 ft
11/29/2018 7:45 water was measured at the 14.0 ft
depth, the borehole was open to 18.8 ft
11/29/2018 16:33 water was measured at the 13.8 ft
depth, the borehole was open to 18.6 ft
11/30/2018 8:28 water was measured at the 13.6 ft
depth, the borehole was open to 18.7 ft
11/30/2018 12:53 water was measured at the 13.4 ft
depth, the borehole was open to 18.5 ft
11/30/2018 13:29 the borehole was grouted

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 26.0

KEY:

DATE DRILLED: 11-27-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 20b

Project No. 0118-039

11/27/18
0 - 2.5 ft

11/27/18
2.5 - 5 ft

11/27/18
5 – 6.5 ft

SAMPLE PHOTOGRAPHS – B-601
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 3

Project No. 0118-039

11/27/18
7.5 - 10 ft

11/27/18
10 – 12.5 ft

11/27/18
12.5 - 14.5ft

SAMPLE PHOTOGRAPHS – B-601
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 3

Project No. 0118-039

11/27/18
18 - 19 ft

11/27/18
19 – 20.5 ft

11/27/18
24 – 26 ft

SAMPLE PHOTOGRAPHS – B-601
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 3

LOG OF BORING NO. B-602
Plum Creek FRS No. 21
Caldwell County, TX

P=2.5

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 495±

Dark brown to brown FAT CLAY, very stiff, w/sand,scattered gravel, calcareous nodules and organics.
CH (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897945.630000
EASTING: 2394732.122000

22

P=3.0

21

5

P=4.5

P=3.5

Light brown, tan and gray FAT CLAY, stiff to hard,slightly moist to moist, w/ferrous staining, calcareous
inclusions, and silt partings and seams. CH(Alluvium)

490.0
5.0

18

10
N=5-7-8

Tan and gray FAT CLAY, stiff to hard, slightly moist to
moist, w/ferrous staining, calcareous inclusions, andsilt partings and seams. CH (Midway)

485.0
10.0

19

P=4.0

24

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 23:15

15

P=4.5+

P=4.5+

19

20
Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway)

474.0
21.0

22

P=4.5+

25

P=4.5+

18

N=10-16-19

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 35.0

KEY:

DATE DRILLED: 11-27-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 21a

LOG OF BORING NO. B-602
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 495±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897945.630000
EASTING: 2394732.122000

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway) (continued)

N=11-16-30

460.0
35.0

35

40

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 23:15

45

50

21

NOTES:
1. Boring was advanced dry to the 35-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.
3. Shelby tube samples were collected by the NRCSat 5'-7.5', 15'-17.5', and 25'-26'.
4. Water level readings:
11/27/2018 14:22 the borehole was dry and open to
28.0 ft
11/28/2018 12:47 water was measured at the 24.5 ft
depth, the borehole was open to 28.0 ft
11/28/2018 17:00 water was measured at the 22.6 ft
depth, the borehole was open to 27.4 ft
11/29/2018 7:50 water was measured at the 18.0 ft
depth, the borehole was open to 25.9 ft
11/29/2018 16:28 water was measured at the 15.3 ft
depth, the borehole was open to 24.3 ft
11/30/2018 8:25 water was measured at the 11.3 ft
depth, the borehole was open to 22.6 ft
11/30/2018 13:31 water was measured at the 10.3 ft
depth, the borehole was open to 21.8 ft
11/30/2018 13:55 the borehole was grouted

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 35.0

KEY:

DATE DRILLED: 11-27-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 21b

Project No. 0118-039

11/27/18
0 - 2.5 ft

11/27/18
2.5 - 5 ft

11/27/18
7.5 – 10 ft

SAMPLE PHOTOGRAPHS – B-602
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 4

Project No. 0118-039

11/27/18
10 - 11.5 ft

11/27/18
13.5 - 15 ft

11/27/18
15 - 17.5ft

SAMPLE PHOTOGRAPHS – B-602
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 4

Project No. 0118-039

11/27/18
17.5 - 19 ft

11/27/18
23 - 24 ft

11/27/18
25 - 26 ft

SAMPLE PHOTOGRAPHS – B-602
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 4

Project No. 0118-039

11/27/18
28.5 - 30 ft

11/27/18
33.5 - 35 ft

SAMPLE PHOTOGRAPHS – B-602
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 4

LOG OF BORING NO. B-603
Plum Creek FRS No. 21
Caldwell County, TX

P=2.25

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 494±

Brown to light brown FAT CLAY, very stiff to hard,
w/sand, scattered gravel, calcareous nodules andfew organics. CH (Fill)

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897902.550000
EASTING: 2394499.168000

23

P=4.5

18

5

14

P=4.5+

P=4.5+

Brown to grayish brown GRAVELLY FAT CLAY, very
stiff, w/ clacareous nodules and pockets, subangular
to subrounded gravel, and sand. CH (Leona)

487.5
7.0

10

10
N=8-10-10

P=4.5+

Brown and gray FAT CLAY, stiff to hard, blocky,slightly moist to moist, w/ferrous staining, calcareous
inclusions, and silt partings and seams. CH(Midway)

482.5
12.0

23

15
PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

P=4.5+

24

P=4.5+

20

P=4.5+

Dark gray CLAYSHALE, hard, dry to moist, laminated,
N=9-16-20
fissile, w/light gray silt seams and partings, andferrous staining. (Midway)

472.5
22.0

23

P=4.5

25

P=4.5+

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 45.0

KEY:

DATE DRILLED: 11-28-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 22a

LOG OF BORING NO. B-603
Plum Creek FRS No. 21
Caldwell County, TX

P=4.5+UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 494±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897902.550000
EASTING: 2394499.168000

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway) (continued)- unctuous below 32 ft

N=10-17-22

23

P=4.5+

25

35

40

N=12-18-21

449.5
45.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

24

NOTES:
1. Boring was advanced dry to the 45-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.
3. Shelby tube samples were collected by the NRCSat 7.5'-8.5', 15.5'-17.5', and 20'-21'.
4. Water level readings:
11/28/2018 17:54 the borehole was dry and open to
38.0 ft
11/29/2018 7:53 the borehole was dry and open to37.6 ft
11/29/2018 16:22 the borehole was dry and open to37.5 ft
11/30/2018 8:16 the borehole was dry and open to37.2 ft
11/30/2018 13:37 the borehole was dry and open to36.3 ft
11/30/2018 14:00 the borehole was grouted

COMPLETION DEPTH: 45.0

KEY:

DATE DRILLED: 11-28-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 22b

Project No. 0118-039

11/28/18
0 - 2.5 ft

11/28/18
2.5 - 5 ft

11/28/18
5 – 7 ft

SAMPLE PHOTOGRAPHS – B-603
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 5Project No. 0118-039

11/28/18
7.5 – 8.5 ft

11/28/18
10 – 11.5 ft

11/28/18
13.5 - 15.5ft

SAMPLE PHOTOGRAPHS – B-603
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 5Project No. 0118-039

11/28/18
15.5 - 17.5 ft

11/28/18
18 - 19 ft

11/28/18
20 - 21 ft

SAMPLE PHOTOGRAPHS – B-603
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 5Project No. 0118-039

11/28/18
22 – 23.5 ft

11/28/18
24 - 25 ft

11/28/18
30 - 31 ft

SAMPLE PHOTOGRAPHS – B-603
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 5Project No. 0118-039

11/28/18
33.5 - 35 ft

11/28/18
38 - 39 ft

11/28/18
43.5 - 45 ft

SAMPLE PHOTOGRAPHS – B-603
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 5

LOG OF BORING NO. B-604
Plum Creek FRS No. 21
Caldwell County, TX

P=0.25N=7-11-25

5
N=3-6-7

P=4.5+

10

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

Tan and brown CLAYEY GRAVEL, medium dense,
subangular to subrounded. GC (Leona)
Tan and gray FAT CLAY, stiff to hard, blocky, slightly
moist to moist, w/ferrous staining, calcareous
inclusions, and silt partings and seams. CH(Midway)

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

23

498.6
3.0
496.6
5.0

19

P=4.5+

22

P=4.5+

21

P=4.5+

22

P=4.5+

P=4.5+

25

PASSING NO.
200 SIEVE, %SURF. ELEVATION: 502±

Brown FAT CLAY, soft, moist, w/silt, sand, organics
and trace gravel. CH (Fill)

P=4.5+20

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897851.230000
EASTING: 2394210.194000

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway)

479.6
22.0
23

24

N=10-18-18

22
N=10-17-23

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 45.0

KEY:

DATE DRILLED: 11-28-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 23a

LOG OF BORING NO. B-604
Plum Creek FRS No. 21
Caldwell County, TX

P=4.5+UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 502±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897851.230000
EASTING: 2394210.194000

Dark gray CLAYSHALE, hard, dry to moist, laminated,fissile, w/light gray silt seams and partings, andferrous staining. (Midway) (continued)- unctuous below 32 ft

P=4.5+

22

P=4.5+

23

35

40

N=12-19-26

456.6
45.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

21

NOTES:
1. Boring was advanced dry to the 45-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.
3. Shelby tube samples were collected by the NRCSat 7.5'-9', 15'-16', 20'-21', and 30'-31'.
4. Water level readings:
11/28/2018 12:37 the borehole was dry and open to
39.0 ft
11/28/2018 16:55 the borehole was dry and open to38.5 ft
11/29/2018 7:57 the borehole was dry and open to
38.4 ft
11/29/2018 16:19 the borehole was dry and open to
38.4 ft
11/30/2018 7:57 the borehole was dry and open to
38.4 ft
11/30/2018 14:10 the borehole was dry and open to
38.0 ft
11/30/2018 14:30 the borehole was grouted
COMPLETION DEPTH: 45.0

KEY:

DATE DRILLED: 11-28-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 23b

Project No. 0118-039

11/28/18
0 - 2 ft

11/28/18
2.5 - 4 ft

11/28/18
5 – 6.5 ft

SAMPLE PHOTOGRAPHS – B-604
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 5Project No. 0118-039

11/28/18
7.5 – 9 ft

11/28/18
10 – 12 ft

11/28/18
13 – 14 ft

SAMPLE PHOTOGRAPHS – B-604
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 5Project No. 0118-039

11/28/18
15 - 16 ft

11/28/18
18 - 19 ft

11/28/18
20 - 21 ft

SAMPLE PHOTOGRAPHS – B-604
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 5Project No. 0118-039

11/28/18
23 – 24.5 ft

11/28/18
24.5 - 26 ft

11/28/18
28 – 29.5 ft

SAMPLE PHOTOGRAPHS – B-604
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 4 of 5Project No. 0118-039

11/28/18
30 - 31 ft

11/28/18
34 - 35 ft

11/28/18
39 - 40 ft

11/28/18
43.5 - 45 ft

SAMPLE PHOTOGRAPHS – B-604
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 5 of 5

LOG OF BORING NO. B-605
Plum Creek FRS No. 21
Caldwell County, TX

P=1.5

5

P=4.5+UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 498±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %PLASTICITYINDEX, %LAYER
ELEV./DEPTH

LIQUID
LIMIT, %STRATUM DESCRIPTION

Brown to dark brown GRAVELLY FAT CLAY, stiff, w/
clacareous nodules and pockets, subangular to
subrounded gravel, and sand. CH (Leona)- large gravel at 1 ft

Brown and reddish brown CLAYEY GRAVEL, medium
dense, subangular to subrounded, w/sand and clay
pockets. GC (Leona)
N=12-13-12

P=3.7510PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897792.110000
EASTING: 2393717.358000

Tan, brown and gray FAT CLAY, stiff to hard, blocky,slightly moist to moist, w/ferrous staining, calcareous
inclusions, and silt partings and seams. CH(Midway)

494.0
4.0

20

490.0
8.0
22

P=4.5+

21

P=3.7526

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

20

P=4.5+

24

P=4.5+

473.0
25.0

25
NOTES:
1. Boring was advanced dry to the 25-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.
3. Shelby tube samples were collected by the NRCS

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 25.0

KEY:

DATE DRILLED: 11-27-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 24a

LOG OF BORING NO. B-605
Plum Creek FRS No. 21
Caldwell County, TX

35

40

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 498±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897792.110000
EASTING: 2393717.358000

at 10'-11.5', and 20'-22'.
4. Water level readings:
11/27/2018 17:20 the borehole was dry and open to
21.0 ft
11/28/2018 12:31 the borehole was dry and open to
21.0 ft
11/28/2018 16:50 the borehole was dry and open to
21.0 ft
11/29/2018 8:01 the borehole was dry and open to
21.0 ft
11/29/2018 16:15 the borehole was dry and open to
21.0 ft
11/30/2018 8:03 the borehole was dry and open to
21.0 ft
11/30/2018 15:55 the borehole was dry and open to
21.0 ft
11/30/2018 16:00 the borehole was grouted

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

45

50

55

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 25.0

KEY:

DATE DRILLED: 11-27-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 24b

Project No. 0118-039

11/27/18
0 - 1 ft

11/27/18
2.5 - 4 ft

11/27/18
5 – 6.5 ft

SAMPLE PHOTOGRAPHS – B-605
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 3

Project No. 0118-039

11/27/18
8.5 - 10 ft

11/27/18
10 – 11.5 ft

11/27/18
13 – 14.5 ft

SAMPLE PHOTOGRAPHS – B-605
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 3

Project No. 0118-039

11/27/18
18 - 20 ft

11/27/18
20 - 22 ft

11/28/18
23 - 25 ft

SAMPLE PHOTOGRAPHS – B-605
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 3

LOG OF BORING NO. B-606
Plum Creek FRS No. 21
Caldwell County, TX

P=1.0

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 494±

Dark brown FAT CLAY, soft to stiff, moist, w/roots,
organics, sand and trace gravel. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897641.860000
EASTING: 2394436.689000

22

P=1.5

P=2.5

Tan, brown and gray FAT CLAY, stiff to hard, blocky,slightly moist to moist, w/ferrous staining, calcareous
inclusions, and silt and fine sand partings andseams. CH (Midway)

P=4.5+- gravel seam at 8 ft

P=2.75

5

489.9
4.0

18

10

20
N=8-11-15

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 15:45

15

21

P=4.5+

473.9
20.0

20

25

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 20-ft depth, andthe borehole was dry upon completion.
2. Boring drilled using a track-mounted geoprobe
equipped to obtain geotechnical samples.
3. Water level readings:
11/29/2018 15:55 the borehole was dry and open to
11.1 ft
11/30/2018 8:11 the borehole was dry and open to
11.1 ft
11/30/2018 16:53 the borehole was dry and open to
11.1 ft
11/30/2018 17:00 the borehole was grouted
COMPLETION DEPTH: 20.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 25

Project No. 0118-039

11/29/18
0 - 2 ft

11/29/18
2 - 4 ft

11/29/18
8 - 10 ft

SAMPLE PHOTOGRAPHS – B-606
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/29/18
13.5 - 15 ft

11/29/18
18 - 20 ft

SAMPLE PHOTOGRAPHS – B-606
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. HA-01
Plum Creek FRS No. 21
Caldwell County, TX

28

100

95

UNCONFINEDSTRENGTHTSF

PASSING NO.
200 SIEVE, %52

SURF. ELEVATION: 515±

Dark brown FAT CLAY, moist, w/roots. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897986.780000
EASTING: 2394484.018000

24

22

Tan and brown FAT CLAY, moist, sandy. CH

513.5
1.5

2

23

25

4

27

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:49

510.0
5.0

6

NOTES:
1. Boring was advanced dry to the 5-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using a hand auger.

8

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 5.0

KEY:

DATE DRILLED: 1-9-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 26

Project No. 0118-039(1/9/19) 0 - 1 ft

(1/9/19) 1 - 2 ft

(1/9/19) 2 - 3 ft

(1/9/19) 3 - 4 ft

(1/9/19) 4 - 5 ft

SAMPLE PHOTOGRAPHS – HAB-01
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 1

LOG OF BORING NO. HA-02
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 514±

Dark brown FAT CLAY, moist, w/roots and calcareous
particles. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897958.250000
EASTING: 2394325.499000

20

24

Tan and gray FAT CLAY, moist, w/sand. CH

512.7
1.5

2

31

23

4

21

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 17:07

509.2
5.0

6

NOTES:
1. Boring was advanced dry to the 5-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using a hand auger.

8

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 5.0

KEY:

DATE DRILLED: 1-9-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 27

Project No. 0118-039(1/9/19) 0 - 1 ft

(1/9/19) 1 - 2 ft

(1/9/19) 3 - 4 ft

(1/9/19) 4 - 5 ft

SAMPLE PHOTOGRAPHS – HAB-02
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 1

LOG OF BORING NO. HA-03
Plum Creek FRS No. 21
Caldwell County, TX
UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 516±

Dark brown FAT CLAY, moist, w/roots. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897932.350000
EASTING: 2394155.627000

20

24

Tan and brown FAT CLAY, moist, w/sand. CH

514.6
1.5

2

31

23

- slightly calcareous, w/trace fine gravel below 3.5 ft
421

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/22/19 17:07

511.1
5.0

6

NOTES:
1. Boring was advanced dry to the 5-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using a hand auger.

8

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 5.0

KEY:

DATE DRILLED: 1-9-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 28

Project No. 0118-039(1/9/19) 0 - 1 ft

(1/9/19) 1 - 2 ft

(1/9/19) 2 - 3 ft

(1/9/19) 3 - 4 ft

(1/9/19) 4 - 5 ft

SAMPLE PHOTOGRAPHS – HAB-03
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 1

LOG OF BORING NO. HA-04
Plum Creek FRS No. 21
Caldwell County, TX

70

44

100

95

UNCONFINEDSTRENGTHTSF

PASSING NO.
200 SIEVE, %29

SURF. ELEVATION: 515±

Dark brown and tan FAT CLAY, moist, w/roots. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898051.230000
EASTING: 2394471.302000

23

Tan and brown FAT CLAY, moist, w/sand. CH

513.8
1.5

2

25

28

4

29

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:49

510.3
5.0

6

NOTES:
1. Boring was advanced dry to the 5-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using a hand auger.

8

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 5.0

KEY:

DATE DRILLED: 1-9-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 29

Project No. 0118-039(1/9/19) 0 - 1 ft

(1/9/19) 1 - 2 ft

(1/9/19) 2 - 3 ft

(1/9/19) 3 - 4 ft

(1/9/19) 4 - 5 ft

SAMPLE PHOTOGRAPHS – HAB-04
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 1

LOG OF BORING NO. HA-05
Plum Creek FRS No. 21
Caldwell County, TX

Tan and gray FAT CLAY, moist, w/silt and sand. CH

25

100

81

UNCONFINEDSTRENGTHTSF

PASSING NO.
200 SIEVE, %46

SURF. ELEVATION: 514±

Dark brown FAT CLAY, moist, sandy, w/roots. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898027.230000
EASTING: 2394318.948000

20

513.2
1.0

2

22

25

27

4

27

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:49

509.2
5.0

6

NOTES:
1. Boring was advanced dry to the 5-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using a hand auger.

8

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 5.0

KEY:

DATE DRILLED: 1-9-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 30

Project No. 0118-039(1/9/19) 0 - 1 ft

(1/9/19) 1 - 2 ft

(1/9/19) 2 - 3 ft

(1/9/19) 3 - 4 ft

(1/9/19) 4 - 5 ft

SAMPLE PHOTOGRAPHS – HAB-05
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 1

LOG OF BORING NO. HA-06
Plum Creek FRS No. 21
Caldwell County, TX

Tan and gray FAT CLAY, moist, w/silt and sand. CH

25

99

85

UNCONFINEDSTRENGTHTSF

PASSING NO.
200 SIEVE, %48

SURF. ELEVATION: 517±

Dark brown FAT CLAY, moist, w/roots. CH

UNIT DRYWEIGHT, PCF

PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13897992.200000
EASTING: 2394148.567000

18

515.5
1.0

2

23

29

- moist at 3 ft

23

4

23

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:49

511.5
5.0

6

NOTES:
1. Boring was advanced dry to the 5-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using a hand auger.

8

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 5.0

KEY:

DATE DRILLED: 1-9-19
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 31

Project No. 0118-039(1/9/19) 0 - 1 ft

(1/9/19) 1 - 2 ft

(1/9/19) 2 - 3 ft

(1/9/19) 3 - 4 ft

(1/9/19) 4 - 5 ft

SAMPLE PHOTOGRAPHS – HAB-06
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 1

Project No. 0118-039

1/10/2019 - DCP testing at HAB-4, upstream slope

1/10/2019 - DCP testing at HAB-2 and HAB-3, downstream slope

Dynamic Cone Penetrometer (DCP)
Site Photographs
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 3

Project No. 0118-039

DCP Data – HAB-01, 02, 03, 03A
Downstream Slope
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2of 3

Project No. 0118-039

DCP Data – HAB-04, 05, 06
Upstream Slope
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 3 of 3

APPENDIX B
Borrow Borings and Sample Photographs

LOG OF BORING NO. B-101
Plum Creek FRS No. 21
Caldwell County, TX

Dark brown FAT CLAY, moist, w/roots and organics.
CH

P=1.0

Light gray FAT CLAY, stiff, moist, w/sand, silt,
calcareous pockets, and organics. CH

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 500±

P=0.5

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898797.370000
EASTING: 2395214.085000

499.3
1.0

P=2.0

P=2.5

P=2.0

5

Tan and gray FAT CLAY, stiff to hard, blocky, w/sand,silt seams and partings, calcareous pockets, andferrous staining. CH (Midway)

496.8
3.5

P=2.0

P=1.75P=2.75

P=3.5

P=4.5

490.3
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 4 ft and
4 to 10 feet.
4. Water level readings:
11/29/2018 17:25 the borehole was dry, open to 9.3 ft
11/30/2018 08:48 the borehole was dry, open to 9.0 ft
11/30/2018 17:10 the borehole was dry, open to 9.0 ft
11/30/2018 17:20 the borehole was grouted

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 10

Project No. 0118-039

11/29/18
0 - 1 ft

11/29/18
1 - 2 ft

11/29/18
2 - 3 ft

11/29/18
3 - 4 ft

SAMPLE PHOTOGRAPHS – B-101
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/29/18
5 - 6 ft

11/29/18
6 - 7 ft

11/29/18
7 - 8 ft

11/29/18
8 - 9 ft

11/29/18
9 - 10 ft

SAMPLE PHOTOGRAPHS – B-101
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-102
Plum Creek FRS No. 21
Caldwell County, TX

P=1.75

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 501±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898572.500000
EASTING: 2395238.506000

Dark grayish brown FAT CLAY, stiff to very stiff,
moist, w/sand and organics. CH

P=3.50P=3.25P=2.25P=1.25

5Gray to light gray FAT CLAY, stiff, moist, w/sand, silt,
calcareous pockets, scattered gravel and organics.
CH

497.8
3.0

P=0.75P=1.00P=1.50P=1.50P=3.00490.8
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 4 ft and
4 to 10 feet.
4. Water level readings:
11/26/2018 17:30 the borehole was dry, open to 9.0 ft
11/30/2018 17:20 water was measured at the 5.5 ft
depth, the borehole was open to 5.7 ft

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-26-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 11

Project No. 0118-039

11/26/18
0 - 1 ft

11/26/18
1 - 2 ft

11/26/18
2 - 3 ft

11/26/18
3 - 4 ft

11/26/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-102
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/26/18
5 - 6 ft

11/26/18
6 - 7 ft

11/26/18
7 - 8 ft

11/26/18
8 - 9 ft

11/26/18
9 - 10 ft

SAMPLE PHOTOGRAPHS – B-102
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-104
Plum Creek FRS No. 21
Caldwell County, TX

P=0.75

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 503±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898845.380000
EASTING: 2395477.282000

Brown to light brown FAT CLAY, soft to stiff, moist,
w/sand and organics. CH

P=1.5

P=1.75

P=3.5

P=4.0

5

Tan and gray FAT CLAY, very stiff to hard, blocky
below 5 ft, w/sand, silt seams and partings,
calcareous pockets, and ferrous staining. CH(Midway)

499.7
3.0

P=3.0

P=3.0

P=3.25P=4.5+

P=4.5+

492.7
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 4 ft and
4 to 10 feet.
4. Water level readings:
11/29/2018 16:55 the borehole was dry, open to 4.5 ft
11/30/2018 08:45 the borehole was dry, open to 4.5 ft

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-29-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 12

Project No. 0118-039

11/29/18
0 – 1.5 ft

11/29/18
1 - 2 ft

11/29/18
2 - 3 ft

11/29/18
3 - 4 ft

11/29/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-104
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/29/18
5 - 6 ft

11/29/18
6 - 7 ft

11/29/18
7 - 8 ft

11/29/18
8 - 9 ft

11/29/18
9 - 10 ft

SAMPLE PHOTOGRAPHS – B-104
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-105
Plum Creek FRS No. 21
Caldwell County, TX

Dark brown sandy FAT CLAY, moist, w/roots. CH

P=1.25Light brown to reddish brown FAT CLAY, stiff, w/sandand scattered organics. CH

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 506±

P=1.0

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898610.970000
EASTING: 2395505.782000

505.4
1.0

P=4.0

P=2.5

P=3.5

5

P=4.5+

P=4.5+

Tan and gray FAT CLAY, very stiff to hard, w/sand,silt seams and partings, calcareous pockets, andferrous staining. CH (Midway)

501.4
5.0

P=4.5+

P=4.5+

P=4.0

496.4
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 1 to 5.5 ft
and 5.5 to 10 feet.
4. Water level readings:
11/26/2018 16:51 the borehole was dry, open to 9.0 ft
11/30/2018 17:20 the borehole was dry, open to 8.2 ft

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-26-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 13

Project No. 0118-039

11/26/18
0 – 1 ft

11/26/18
1 - 2 ft

11/26/18
2 - 3 ft

11/26/18
3 - 4 ft

SAMPLE PHOTOGRAPHS – B-105
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/26/18
5 - 6 ft

11/26/18
6 - 7 ft

11/26/18
7 - 8 ft

11/26/18
8 - 9 ft

11/26/18
9 - 10 ft

SAMPLE PHOTOGRAPHS – B-105
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-107
Plum Creek FRS No. 21
Caldwell County, TX

P=1.25

P=2.5

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 500±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13898820.470000
EASTING: 2394212.414000

Dark brown to grayish brown FAT CLAY, stiff to very
stiff, moist, w/organics, sand, small gravel, andcalcareous nodules. CH

P=4.0

P=3.5

P=4.0

5

Light brown, gray and dark gray FAT CLAY, very stiffto hard, w/sand, silt seams and partings, calcareous
pockets, and ferrous staining. CH (Midway)

495.8
4.0

P=4.5

P=4.5

P=4.5

489.8
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 3 ft and
3 to 10 feet.
4. Water level readings:
11/26/2018 14:30 the borehole was dry, open to 9.0 ft
11/26/2018 14:59 the borehole was dry, open to 9.0 ft
11/26/2018 the borehole was bentonite plugged

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-26-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 14

Project No. 0118-039

11/26/18
0 – 1 ft

11/26/18
1 - 2 ft

11/26/18
2 - 3 ft

11/26/18
3 - 4 ft

11/26/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-107
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/26/18
5 - 6 ft

11/26/18
6 - 7 ft

11/26/18
7 - 8 ft

11/26/18
8 - 9 ft

11/26/18
9 - 10 ft

SAMPLE PHOTOGRAPHS – B-107
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-108
Plum Creek FRS No. 21
Caldwell County, TX

P=1.0

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 500±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13899014.750000
EASTING: 2394284.459000

Dark brown to black FAT CLAY, stiff, moist,
w/calcareous nodules and scattered gravel. CH

P=1.25

P=2.5

P=3.25

Grayish brown to light brown FAT CLAY, stiff to very
stiff, w/sand, calcareous nodules, and gravel. CH

497.0
3.0

P=4.0

5

P=4.5+

P=3.75

Tan and gray FAT CLAY, very stiff to hard, blocky,
w/sand, silt seams and partings, calcareous pockets,and ferrous staining. CH (Midway)

495.0
5.0

P=4.5+

P=4.5+

P=4.5+

490.0
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 3 ft and
3 to 10 feet.
4. Water level readings:
11/26/2018 13:50 the borehole was dry, open to 9.0 ft
11/26/2018 14:56 the borehole was dry, open to 9.0 ft
11/26/2018 15:00 the borehole was bentonite plugged

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-26-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 15

Project No. 0118-039

11/26/18
0 – 1 ft

11/26/18
1 - 2 ft

11/26/18
2 - 3 ft

11/26/18
3 - 4 ft

11/26/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-108
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/26/18
5 - 6 ft

11/26/18
6 - 7 ft

11/26/18
7 - 8 ft

11/26/18
8 - 9 ft

SAMPLE PHOTOGRAPHS – B-108
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-109
Plum Creek FRS No. 21
Caldwell County, TX

P=0.5

UNCONFINEDSTRENGTH
TSF

SURF. ELEVATION: 501±

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13899203.140000
EASTING: 2394369.853000

Dark brown and grayish brown FAT CLAY, soft to stiff,
moist, w/sand and calcareous nodules. CH

P=0.5

P=1.25

P=4.0

P=4.5+

5

Light brown, tan and gray FAT CLAY, very stiff tohard, blocky below 5 ft, w/sand, silt seams andpartings, calcareous pockets, and ferrous staining.
CH (Midway)

497.7
3.0

P=4.5+

P=4.5+

P=4.5+- inclined fracture w/gypsum at 7.2 ft- tansitions to gray, blocky at 7.5 ft

P=4.5+

P=4.5+

490.7
10.0

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

NOTES:
1. Boring was advanced dry to the 10-ft depth, andthe borehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 4 ft and
4 to 10 feet.
4. Water level readings:
11/26/2018 13:23 the borehole was dry, open to 9.0 ft
11/26/2018 14:54 the borehole was dry, open to 9.0 ft
11/26/2018 15:00 the borehole was bentonite plugged

COMPLETION DEPTH: 10.0

KEY:

DATE DRILLED: 11-26-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 16

Project No. 0118-039

11/26/18
0 – 1 ft

11/26/18
1 - 2 ft

11/26/18
2 - 3 ft

11/26/18
3 - 4 ft

11/26/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-109
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/26/18
5 - 6 ft

11/26/18
6 - 7 ft

11/26/18
7 - 8 ft

11/26/18
8 - 9 ft

11/26/18
9 - 10 ft

SAMPLE PHOTOGRAPHS – B-109
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2

LOG OF BORING NO. B-110
Plum Creek FRS No. 21
Caldwell County, TX

Dark brown FAT CLAY, stiff, w/sand, calcareous
nodules, and organics. CH

P=1.75Light brown, tan and gray FAT CLAY, very stiff tohard, w/sand, calcareous pockets, ferrous staining,and cemented gravel. CH

UNCONFINEDSTRENGTH
TSF

UNIT DRYWEIGHT, PCF

PASSING NO.
200 SIEVE, %PASSING NO.
4 SIEVE, %SURF. ELEVATION: 504±

P=2.0

P=2.25LAYER
ELEV./
DEPTH

PLASTICITYINDEX, %STRATUM DESCRIPTIONLIQUID
LIMIT, %PROJECT NO. 0118-039
WATER
CONTENT, %POCKET PEN, tsf
Blows/ft.
REC./RQD, %SYMBOLSAMPLESDEPTH, FTNORTHING: 13899070.460000
EASTING: 2394137.704000

503.1
1.0

P=1.75

P=4.0

5

P=2.5

P=4.25P=2.5- Medium gravel sheared sample at 7 ft

PLUM 21 0118-039 PLUM CREEK 21.GPJ 0117-049 PALMETTO BORING LOGS.GPJ 06/23/19 15:18

10

496.1
8.0

NOTES:
1. Boring was advanced dry to the 8-ft depth, and theborehole was dry upon completion.
2. Soil samples were obtained using direct-pushgeoprobe and auger cuttings.
3. Bulk soils samples were obtained from 0 to 3 ft and
3 to 8 feet.
4. Water level readings:
11/26/2018 12:44 the borehole was dry, open to 6.0 ft
11/26/2018 14:50 the borehole was dry, open to 6.0 ft
11/26/2018 15:00 the borehole was bentonite plugged

15

Balcones
Geotechnical
Austin, TX 78731
512.380.9969

COMPLETION DEPTH: 8.0

KEY:

DATE DRILLED: 11-26-18
WATER LEVEL / SEEPAGE:

P = Pocket Penetrometer
N = Standard Penetration Test (bpf)
U = Unconfined Compression (tsf)

UPON COMPLETION:

Plate 17

Project No. 0118-039

11/26/18
0 – 1 ft

11/26/18
1 - 2 ft

11/26/18
2 - 3 ft

11/26/18
3 - 4 ft

11/26/18
4 - 5 ft

SAMPLE PHOTOGRAPHS – B-110
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 1 of 2

Project No. 0118-039

11/26/18
5 - 6 ft

11/26/18
6 - 7 ft

11/26/18
7 - 8 ft

11/26/18
8 - 9 ft

SAMPLE PHOTOGRAPHS – B-110
Plum Creek FRS No. 21
Caldwell County, TX
Sheet 2 of 2APPENDIX C
Piezometer ConstructionProject No: 0118-039

B-04P

Piezometer Number:
Installation Date:

2/26/20198" Diameter Flush Mount Well Cover
Embedded 18 inches into Ground
Concrete Pad(2-ft by 2-ft)

Ground SurfaceB

2-inch Diameter
Schedule 40
PVC Riser Pipe

F

E

D

C

Concrete

Top of
Bentonite

Grout
Bentonite

Top ofSand Pack

Sand 16/24

Top of Screen

A

Bottom of Hole and Well/ScreenG

Field Measurements:
A:

20.0'

C:

20.0'

E:

40.0'

B:

1.5'

D:

37.5'

F:

60.0'

G:

8"

PIEZOMETER SCHEMATIC
Plum Creek FRS No. 21

ScreenLength2-inch Diameter
Slotted Pipe Screen
Size 0.01 inch

STATE OF TEXAS WELL REPORT for Tracking #506561
Owner:

Plum Creek Conservation District

Owner Well #:P4Address:

1101 W. San Antonio St.
Lockhart, TX 78644

Grid #:

67-03-6

Well Location:

FM 1185
Lockhart, TX 78644

Latitude:29° 57' 26.64" NLongitude:

097° 39' 10.81" W

Elevation:

524 ft. above sea level

Proposed Use:piezometer

6,600 feet east of the SH northbound
130 frontage road. Piezo is locatedon the crest of the SCS Reservoir 21
dam on the north side of the FM 1185
Well County:

CaldwellType of Work:

New WellDrilling Start Date: 2/26/2019

Drilling End Date: 2/26/2019
Diameter (in.)

Top Depth (ft.)

Bottom Depth (ft.)

8

0

60

Borehole:
Drilling Method:

Hollow Stem Auger

Borehole Completion:

Sand packed
Top Depth (ft.)

Bottom Depth (ft.)

Description (number of sacks & material)

020

Grout 320

37.5

Bentonite 7

37.5

60

Sand 13

Annular Seal Data:

Seal Method: Tremie

Distance to Property Line (ft.): No Data

Sealed By: Driller

Distance to Septic Field or otherconcentrated contamination (ft.): No Data
Distance to Septic Tank (ft.): No Data
Method of Verification: No Data

Surface Completion:

Surface Slab Installed

Water Level:

No Data

Packers:

No Data

Type of Pump:

No Data

Well Tests:

No Test Data Specified

3/25/2019 2:39:54 PM

Surface Completion by Driller

Well Report Tracking Number 506561
Submitted on: 3/25/2019

Page 1 of 2

Water Quality:

Certification Data:

Strata Depth (ft.)

Water TypeNo Data

No Data
Chemical Analysis Made:No

Did the driller knowingly penetrate any strata whichcontained injurious constituents?:

No

The driller certified that the driller drilled this well (or the well was drilled under the
driller's direct supervision) and that each and all of the statements herein are true andcorrect. The driller understood that failure to complete the required items will result in
the report(s) being returned for completion and resubmittal.

Company Information:

Austin Geo-Logic
1316 Ridgefield Loop
Round Rock, TX 78665

Driller Name:

Hamilton L. McRae

Comments:

No Data

License Number:

Lithology:
DESCRIPTION & COLOR OF FORMATION MATERIAL
Top (ft.)

Bottom (ft.)

060

Description

Silty clay

59656

Casing:BLANK PIPE & WELL SCREEN DATA
DIa
(in.)

Type

Material

Sch./Gage

Top (ft.)

Bottom
(ft.)

2

Riser

New Plastic
40
(PVC)

0

40

2

ScreenNew Plastic 40
(PVC)
0.010

40

60

IMPORTANT NOTICE FOR PERSONS HAVING WELLS DRILLED CONCERNING CONFIDENTIALITY
TEX. OCC. CODE Title 12, Chapter 1901.251, authorizes the owner (owner or the person for whom the well was
drilled) to keep information in Well Reports confidential. The Department shall hold the contents of the well log
confidential and not a matter of public record if it receives, by certified mail, a written request to do so from the owner.
Please include the report's Tracking Number on your written request.
Texas Department of Licensing and Regulation
P.O. Box 12157
Austin, TX 78711(512) 334-5540

3/25/2019 2:39:54 PM

Well Report Tracking Number 506561
Submitted on: 3/25/2019

Page 2 of 2

Project No: 0118-039

B-06P

Piezometer Number:
Installation Date:

2/27/20198" Diameter Flush Mount Well Cover
Embedded 18 inches into Ground
Concrete Pad(2-ft by 2-ft)

Ground SurfaceB

2-inch Diameter
Schedule 40
PVC Riser Pipe

F

E

D

C

Concrete

Top of
Bentonite

Grout
Bentonite

Top ofSand Pack

Sand 16/24

Top of Screen

A

Bottom of Hole and Well/ScreenG

Field Measurements:
A:

20.0'

C:

35.0'

E:

50.0'

B:

1.5'

D:

38.0'

F:

70.0'

G:

8"

PIEZOMETER SCHEMATIC
Plum Creek FRS No. 21

ScreenLength2-inch Diameter
Slotted Pipe Screen
Size 0.01 inch

STATE OF TEXAS WELL REPORT for Tracking #506563
Owner:

Plum Creek Conservation District

Owner Well #:P6

Address:

1101 W. San Antonio St.
Lockhart, TX 78644

Grid #:

67-03-6

Well Location:

FM 1185
Lockhart, TX 78644

Latitude:29° 57' 27.32" NLongitude:

097° 39' 06.46" W

Elevation:

524 ft. above sea level

Proposed Use:piezometer

7,100 feet east of the SH northbound
130 frontage road. Piezo is locatedon the crest of the SCS Reservoir 21
dam on the north side of the FM 1185
Well County:

CaldwellType of Work:

New WellDrilling Start Date: 2/27/2019

Drilling End Date: 2/27/2019
Diameter (in.)

Top Depth (ft.)

Bottom Depth (ft.)

8

0

70

Borehole:
Drilling Method:

Hollow Stem Auger

Borehole Completion:

Sand packed
Top Depth (ft.)

Bottom Depth (ft.)

Description (number of sacks & material)

035

Grout 635

38

Bentonite 2

38

70

Sand 18

Annular Seal Data:

Seal Method: Tremie

Distance to Property Line (ft.): No Data

Sealed By: Driller

Distance to Septic Field or otherconcentrated contamination (ft.): No Data
Distance to Septic Tank (ft.): No Data
Method of Verification: No Data

Surface Completion:

Surface Slab Installed

Water Level:

No Data

Packers:

No Data

Type of Pump:

No Data

Well Tests:

No Test Data Specified

3/25/2019 2:43:58 PM

Surface Completion by Driller

Well Report Tracking Number 506563
Submitted on: 3/25/2019

Page 1 of 2

Water Quality:

Certification Data:

Strata Depth (ft.)

Water TypeNo Data

No Data
Chemical Analysis Made:No

Did the driller knowingly penetrate any strata whichcontained injurious constituents?:

No

The driller certified that the driller drilled this well (or the well was drilled under the
driller's direct supervision) and that each and all of the statements herein are true andcorrect. The driller understood that failure to complete the required items will result in
the report(s) being returned for completion and resubmittal.

Company Information:

Austin Geo-Logic
1316 Ridgefield Loop
Round Rock, TX 78665

Driller Name:

Hamilton L. McRae

Comments:

No Data

License Number:

Lithology:
DESCRIPTION & COLOR OF FORMATION MATERIAL
Top (ft.)

Bottom (ft.)

060

Description

Silty clay

59656

Casing:BLANK PIPE & WELL SCREEN DATA
DIa
(in.)

Type

Material

Sch./Gage

Top (ft.)

Bottom
(ft.)

2

Riser

New Plastic
40
(PVC)

0

50

2

ScreenNew Plastic 40
(PVC)
0.010

50

70

IMPORTANT NOTICE FOR PERSONS HAVING WELLS DRILLED CONCERNING CONFIDENTIALITY
TEX. OCC. CODE Title 12, Chapter 1901.251, authorizes the owner (owner or the person for whom the well was
drilled) to keep information in Well Reports confidential. The Department shall hold the contents of the well log
confidential and not a matter of public record if it receives, by certified mail, a written request to do so from the owner.
Please include the report's Tracking Number on your written request.
Texas Department of Licensing and Regulation
P.O. Box 12157
Austin, TX 78711(512) 334-5540

3/25/2019 2:43:58 PM

Well Report Tracking Number 506563
Submitted on: 3/25/2019

Page 2 of 2