Post on 11-Aug-2020
51-1-10079-028
APPENDIX C
BOREHOLE GEOPHYSICAL SURVEYS
BY GEOVISION, INC.
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APPENDIX C
BOREHOLE GEOPHYSICAL SURVEYS
BY GEOVISION, INC.
TABLE OF CONTENTS
Page
C.1. GENERAL .......................................................................................................................C-1
C.2. ACOUSTIC TELEVIEWER SURVEY ..........................................................................C-1
C.3. NATURAL GAMMA RAY LOGGING .........................................................................C-1
C.4. INDUCTION LOGGING ................................................................................................C-2
FIGURES
Televiewer and Natural Gamma Ray Surveys by GeoVision (63 pages)
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APPENDIX C
BOREHOLE GEOPHYSICAL SURVEYS
BY GEOVISION, INC.
C.1. GENERAL
GEOVision of Corona, California performed acoustic televiewer and natural gamma logging in boring B-12. Their report is attached to this appendix. Borehole televiewer surveys are down hole logging techniques that provide an image of the borehole surface. Geologic features such as sedimentary bedding and fractures commonly can be imaged in borehole televiewer surveys. These images include the boring depth, inclination and size. With this information the orientation can be calculated. Bedding and discontinuity attitudes obtained from the borehole televiewer surveys are also included on the B-12 boring log in Appendix B.
Previously, GEOVision performed acoustic and televiewer logging of boreholes B-1 and B-7 (August 15, 2012) and induction and natural gamma logging in borings B-1, B-3, and B-4 through B-11, optical and acoustic televiewer logging in boring B-10, and acoustic televiewer logging in boring B-11 (December 19, 2012).
C.2. ACOUSTIC TELEVIEWER SURVEY
The GEOVision borehole televiewer survey was performed using a RG Borehole Televiewer, or equivalent. The borehole acoustic televiewer utilizes acoustic waves to image the internal surface of the borehole. Because it is acoustic, and not optical, it does not require clear water to operate. The resulting images can be laid out vertically almost like a physical core. The instrument has a built-in fluxgate magnetometer to maintain orientation accuracy throughout the
be mapped, but oriented in space to provide an orientation angle relative to north, and a dip angle at a measured depth. This analysis is done after the data collection using specialized software tools. The acoustic televiewer requires a stable, fluid filled, uncased borehole between 67 and 150 mm diameter.
C.3. NATURAL GAMMA RAY LOGGING
GEOVision performed natural gamma ray logging for boring B-12. Natural gamma ray logging is a method of measuring naturally occurring gamma radiation to characterize the rock in a borehole. Natural gamma radiation in rock typically increases with increasing clay content;
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therefore, it can be used to identify lithology and stratigraphy in boreholes or wells. In particular, shale usually emits more gamma rays than other sedimentary rocks, such as sandstone, because radioactive potassium is a common component in their clay content. This difference in radioactivity allows the gamma tool to distinguish between shale and non-shale rock types. The gamma ray log, like other types of well logging, is done by lowering an instrument down the hole and recording gamma radiation variation with depth. The resultant logging allows for the selection of contacts between geologic units. Because gamma radiation can penetrate steel, plastic and fluids, the logging can be done in cased holes, and uncased holes with or without drilling fluid.
C.4. INDUCTION LOGGING
GEOVision performed induction logging in boring B-12. Induction logging is a method of well logging measures electrical conductivity. Most rock materials are essentially insulators, while their enclosed fluids are conductors. The results can be used to characterize rock porosity and permeability.
C.5. REFFERENCES
ASTM International (ASTM), 2006, Annual Book of Standards-Construction, v. 4.08, soil and rock, (I): D 420 D 5611: West Conshohocken, Pa
Ulusay, Resat and Hudson, J. A., eds., 2007, The complete ISRM suggested methods for rock characterization, testing and monitoring: 1974-2006: Ankara, Commission on Testing Methods, International Society of Rock Mechanics, 628 p.
Shannon & Wilson, Inc., 2012a, Final Geotechnical Report, White Point Landslide: Report prepared by Shannon & Wilson, Inc., Glendale, Calif., W. O. E1907483, for City of Los Angeles Geotechnical Engineering Group, Los Angeles, Calif., August, 467 p.
Shannon & Wilson, Inc., 2012b, Final Addendum Geotechnical Report No. 1, White Point Landslide: Report prepared by Shannon & Wilson, Inc., Glendale, Calif., W. O. E1907483, for City of Los Angeles Geotechnical Engineering Group, Los Angeles, Calif., August, 500 p.
WHITE POINT LANDSLIDE
BORING B-12
TELEVIEWER AND NATURAL GAMMA SURVEYS
April 19, 2013 Report 13120-01 rev 0
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 1 of 63
WHITE POINT LANDSLIDE
BORING B-12
TELEVIEWER AND NATURAL GAMMA SURVEYS
Prepared for
Shannon & Wilson, Inc. 664 West Broadway
Glendale, California 91204 (818) 543-4560
Prepared by
GEOVision Geophysical Services 1124 Olympic Drive
Corona, California 92881 (951) 549-1234 Project 13120
April 19, 2013 Report 13120-01 rev 0
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 2 of 63
TABLE OF CONTENTS
TABLE OF CONTENTS ............................................................................................................................... 3
TABLE OF FIGURES ................................................................................................................................... 4
TABLE OF TABLES..................................................................................................................................... 4
TABLE OF APPENDICIES........................................................................................................................... 4
INTRODUCTION........................................................................................................................................... 5
SCOPE OF WORK ....................................................................................................................................... 5
INSTRUMENTATION ................................................................................................................................... 6
ACOUSTIC TELEVIEWER INSTRUMENTATION ...................................................................................................... 6
INDUCTION / NATURAL GAMMA INSTRUMENTATION ............................................................................................ 8
MEASUREMENT PROCEDURES ............................................................................................................. 10
ACOUSTIC TELEVIEWER MEASUREMENT PROCEDURES ................................................................................... 10
INDUCTION / NATURAL GAMMA MEASUREMENT PROCEDURES.......................................................................... 10
DATA ANALYSIS....................................................................................................................................... 12
ACOUSTIC TELEVIEWER ANALYSIS.................................................................................................................. 12
INDUCTION / NATURAL GAMMA ANALYSIS........................................................................................................ 13
RESULTS ................................................................................................................................................... 13
ACOUSTIC TELEVIEWER RESULTS .................................................................................................................. 13
INDUCTION / NATURAL GAMMA RESULTS......................................................................................................... 13
SUMMARY.................................................................................................................................................. 14
DISCUSSION OF TELEVIEWER RESULTS .......................................................................................................... 14
DISCUSSION OF INDUCTION / NATURAL GAMMA RESULTS ................................................................................ 14
QUALITY ASSURANCE .................................................................................................................................... 15
TELEVIEWER DATA RELIABILITY...................................................................................................................... 15
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 3 of 63
Table of Figures Figure 1: Concept illustration of televiewer probe......................................................................................17
Figure 2. Boring B-12, Acoustic Deviation Projection................................................................................21
Figure 3. Boring B-12, Induction and natural gamma logs ........................................................................22
Table of Tables Table 1. Boring locations and logging dates..............................................................................................16
Table 2. Logging dates and depth ranges .................................................................................................16
Table 3. Televiewer Deviation Data Summary ..........................................................................................16
Table 4. Boring B-12, Acoustic Structure depth, dip azimuth, dip and description....................................18
TABLE OF APPENDICIES
APPENDIX A PROCESSED TELEVIEWER LOGS WITH FRACTURE AND
BEDDING DEPTHS, DIPS, AND DIP AZIMUTHS
APPENDIX B ACOUSTIC TELEVIEWER BASED CALIPER LOGS
APPENDIX C INDUCTION AND NATURAL GAMMA LOGS
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 4 of 63
INTRODUCTION
Acoustic televiewer images, induction data and natural gamma data were collected in one
uncased rock boring at the White Point Landslide in San Pedro, California. Data acquisition was
performed on April 12, 2013 by Victor Gonzalez of GEOVision. Analysis and report
preparation was performed by Victor Gonzalez and Emily Feldman and reviewed by Robert
Steller of GEOVision. The work was performed under subcontract with Shannon & Wilson,
Inc., with Steven Diem serving as the point of contact for Shannon & Wilson.
This report describes the field measurements, data analysis, and results of this work.
SCOPE OF WORK
This report presents the results of induction, natural gamma and acoustic televiewer logs
collected in one uncased nominal 3.86 inch diameter boring, as detailed in Table 1. The purpose
of these studies was to supplement open fracture location information obtained during Shannon
& Wilsons rock coring program and to acquire fracture and bedding depths, azimuths and dips
as an aid in locating potential landslide failure planes.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 5 of 63
INSTRUMENTATION
Acoustic Televiewer Instrumentation
Acoustic televiewer data were collected using a Robertson high resolution acoustic televiewer
probe (HiRAT), controlled by Robertsons HiRAT program, version 11. The total length of the
probe as used in this survey is 5.2 feet, with the sensor head located 0.5 feet above the bottom
end of the probe, as illustrated in Figure 1. The probe receives control signals from, and sends
data to, instrumentation on the surface via a 4-conductor armored cable. The cable is wound
onto the drum of a winch and is used to support the probe. Cable travel is measured to provide
probe depth data, using a sheave of known circumference fitted with a digital rotary encoder.
The probe and depth data are transmitted by USB link from the Micrologger unit to a laptop
computer where it is displayed and stored on hard disk. The probe is centered in the boring by
two sets of flat spring centralizers.
In this application, this probe is useful in the following studies:
Measurement of boring inclination and deviation from vertical
Determination of need to correct soil and geophysical log depths to true vertical depths
Acoustic imaging of the boring wall to identify fractures, dikes, and weathered zones,
and determine dip and azimuth of these features
This system produces images of the boring wall based upon the amplitude and travel time of an
ultrasonic beam reflected from the formation wall. The ultrasonic energy is generated by a
piezoelectric transducer at a frequency of 1.4 MHz. A periodic acoustic energy wave is emitted
by the transducer and travels through the acoustic head and boring fluid until it reaches the
interface between the boring fluid and the boring wall. Here a portion of the energy is reflected
back to the transducer, the remainder continuing on into the formation. By careful time
sequencing, the piezoelectric transducer acts as both the transmitter of the ultrasonic pulse and
receiver of the reflected wave. The travel time of the energy wave is the period between
transmission of the source energy pulse and the return of the reflected wave measured at the
point of maximum wave amplitude. The magnitude of the wave energy is measured in dB, a
unit-less ratio of the detected echo wave amplitude divided by the amplitude of the transmitted
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 6 of 63
wave. The strength of the reflected signal depends primarily upon the impedance contrast of the
boring fluid and the boring wall formation. In these rock borings, the contrast between the water
filling the boring and the rock formation generally provides high contrast. The changes in
reflectance between rock types provide imaging of healed fractures in the parent rock.
The acoustic wave propagates along the axis of the probe and then is reflected perpendicular to
this axis by a reflector that focuses the beam to a 0.1-inch diameter spot about 2 inches from the
central axis of the probe. This reflector is mounted on the shaft of a stepper motor enabling the
position of the measurement to be rotated through 360 . Sampling rates of 90, 180 and 360
measured points per revolution are available. During these surveys, data were collected at 360
samples per revolution, providing an equivalent horizontal pixel size of approximately 0.052
inches on the boring wall. It should be noted that during logging the probe is moving vertically
in the boring, so that the measured points describe a very fine pitch spiral.
The probe contains a fluxgate magnetometer to monitor magnetic north, and all raw televiewer
data is referenced to magnetic north. The processed data is referenced to true north, using a
declination of 12.5 degrees east for this site and dates, obtained from the NOAA declination web
site (http://www.ngdc.noaa.gov/geomag-web/#declination). Also, a three axis accelerometer is
enclosed in the probe, and boring deviation data is recorded during the logging runs, to permit
correction of structure dip angle from apparent dip, (referenced to boring axis), to true dip
(referenced to a vertical axis) in non-vertical borings. The probe is centered in the boring by two
sets of flat spring centralizers.
The data are presented on a computer screen for operator review during the logging run, and
stored on hard disk for later processing.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 7 of 63
Induction / Natural Gamma Instrumentation
Formation conductivity and natural gamma data were collected using a DUIN model dual
induction probe, manufactured by Robertson Geologging, Ltd. The probe is 7.5 feet long, and
1.5 inches in diameter.
This probe is useful in the following studies:
Bed boundary identification
Strata correlation between borings
Strata geometry and type (shale indication)
The probe receives control signals from, and sends the digitized measurement values to, a
Robertson Micrologger II on the surface via an armored 4 conductor cable. The cable is wound
onto the drum of a winch and is used to support the probe. Cable travel is measured to provide
probe depth data, using a sheave of known circumference fitted with a digital rotary encoder.
The probe and depth data are transmitted by USB link from the Micrologger unit to a laptop
computer where it is displayed and stored on hard disk.
An Electro-Magnetic (EM) induction probe consists of transmitter and receiver coils. An
alternating current is applied to the transmitter coil, causing the coil to radiate a primary EM
field. This primary EM field generates eddy currents in subsurface materials, which give rise to a
secondary EM field. The secondary EM field is measured as an alternating current in the receiver
coils, which is proportional to formation conductivity. The probe coil spacing is optimized to
achieve high vertical resolution, minimal borehole influence and large radius of investigation.
The Robertson focused dual induction probe has effective coil spacings of 1.6 and 2.6 feet,
operates at a frequency of 39 kHz, has 1 millisiemens/meter resolution, and operates over a 5 to
3000 millisiemens/meter conductivity range.
Natural gamma measurements rely upon small quantities of radioactive material contained in soil
and rocks to emit gamma radiation as they decay. Trace amounts of uranium and thorium are
present in a few minerals, where potassium-bearing minerals such as feldspar, mica and clays
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 8 of 63
will include traces of a radioactive isotope of potassium. These emit gamma radiation as they
decay with an extremely long half-life. This radiation is detected by scintillation - the production
of a tiny flash of light when gamma rays strike a crystal of sodium iodide. The light is converted
into an electrical pulse by a photomultiplier tube. Pulses above a threshold value of 60 KeV are
counted by the probe's microprocessor. The measurement is useful because the radioactive
elements are concentrated in certain soil and rock types e.g. clay or shale, and depleted in others
e.g. sandstone or coal.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 9 of 63
MEASUREMENT PROCEDURES
Acoustic Televiewer Measurement Procedures
Boring B-12 was logged with the acoustic televiewer below water level. In accordance with the
manufacturers recommended procedures, the probe was inspected and tested prior to entering
the boring. The probe was then positioned with the collar of the probe positioned at grade, and
the electronic depth counter was set to 4.72 feet, corresponding to the offset between collar and
imaging unit. The probe was lowered to the bottom of the boring, where data acquisition was
started on the laptop computer. The rotational scan resolution was set to 360 samples per
revolution, giving a horizontal pixel size of 0.035 inches. The probe was then raised at a
nominal rate of 3 feet per minute to static water level with an acquisition rate of 250
samples/foot, giving an equivalent vertical pixel size of 0.004 feet (approximately 0.05 inches).
This file was then closed and reviewed on the computer screen. Upon completion of the
measurements, the probe zero depth indication at grade was verified prior to removal from the
boring.
Induction / Natural Gamma Measurement Procedures
Boring B-12 was logged with the DUIN probe, which is not sensitive to the presence of water or
non-conductive casing. The probe was positioned with the top of the probe at ground surface,
and the electronic depth counter was set to the specified length of the probe. The probe was
lowered to the bottom of the boring where data acquisition was begun, and the probe was
returned to the surface at 10 feet/sec, collecting data continuously at 0.05-foot spacing, as
summarized in Table 2. Measurements followed ASTM D6726-01 (Re-approved 2007)
Conducting Borehole Geophysical Logging Electromagnetic Induction. This probe was not
calibrated in the field, as it is used to provide qualitative measurements, not quantitative values,
and is used only to assist in picking transitions between stratigraphic units, as described in
ASTM D5753-05 (Reapproved 2010), Planning and Conducting Borehole Geophysical
Logging. A functional test was performed prior to the logging run by placing a coil with an
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 10 of 63
effective conductivity value over the probe, and recording the resultant output of the system at
each conductivity value.
Natural gamma was not calibrated in the field, as it is a qualitative measurement, not a
quantitative value, and is used only to assist in picking transitions between stratigraphic units, as
described in ASTM D6274-10, Conducting Borehole Geophysical Logging Gamma.
Upon completion of the measurements, the probe zero depth indication at the depth reference
point was verified prior to removal from the boring.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 11 of 63
DATA ANALYSIS
Acoustic Televiewer Analysis
The acoustic televiewer data were processed using Robertsons RGLDIP software, version 6.2.
Sinusoidal projections of fractures in the boring walls were interactively picked on the un-
wrapped televiewer image, and are presented on the logs as blue sinusoids superimposed over
the televiewer image. Bedding features, where identifiable, were picked on the same images,
and are presented on the logs as green sinusoids. The sinusoidal projections were processed
using the standard boring gauge of 3.86 inches to calculate apparent dip angle. True dip was
calculated, correcting for the plunge of the borings using the recorded data from the
accelerometers located in the probes, and presented in arrow format, with true dip indicated by
the arrow position across the plot. Azimuth of dip (not strike), is indicated by the direction of
the arrow tail, with true north being up. These values are presented with the comments to the
right of the arrow plots, as dip azimuth followed by dip angle.
The televiewer images were also processed to create a simulated core image of the borings. It
must be noted that the simulated core image represents a core that would have the full 3.86 inch
diameter of the boring, not the diameter of any cores removed during drilling, so that direct
comparison between the two is not possible. Also, the unwrapped image is viewed from the
perspective of an observer in the center of the boring looking outward. The simulated core
image is viewed form the outside of the boring looking inward, so there is a reversal of the
position of east and west relative to north between the two images.
The acoustic televiewer data were also processed to extract the deviation data and produce an
ASCII file and plots of boring deviation, as well as a 4-arm caliper log, derived from the acoustic
travel time data.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 12 of 63
Induction / Natural Gamma Analysis
No analysis is required with the induction and natural gamma data; however depths to
identifiable boring features were compared to verify compatible depth readings on all logs.
Using WellCAD software version 4.3, these data were converted to LAS and PDF formats for
transmittal to the client.
RESULTS
Acoustic Televiewer Results
Acoustic televiewer images and dip data are presented in Appendix A. Acoustic Televiewer
based caliper logs are presented in Appendix B. Both are provided in PDF format as well.
Fracture and bedding depth, dip and azimuth of dip data are provided on the multi-page log
sheets in Appendix A, in Table 4 and in Microsoft Excel® format for input into stereonet analysis
programs.
Acoustic boring deviation data for B-12 are presented graphically in Figure 2, and summarized
in Table 3. Deviation data plots in Acrobat format and deviation data at 1.0-foot stations are
presented in ASCII format.
Induction / Natural Gamma Results
Induction data are presented in a combined log plot with natural gamma data as a single page log
in Figure 2. The multi-page, 1in:10ft scale, log is presented in Appendix C and on the disk (CD-
R) that accompanies this report.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 13 of 63
SUMMARY
Discussion of Televiewer Results
Boring B-12 was drilled in soft fractured rock with a rotary mud diamond core bit, and produced
good televiewer images. The upper portion of the boring is intensely fractured. Many hairline
and healed fractures are present. The use of the acoustic televiewer data for the location of open
fractures is recommended, as the travel time function of the acoustic televiewer clearly
delineates areas where there is material absent from the boring wall. This is visible on the
acoustic televiewer derived caliper plots contained in Appendix B.
The boring exhibits a deviation of 0.8 degrees, deviating a horizontal distance of 1.75 feet over
the 129.5 foot depth boring, as summarized in Table 3. This corresponds to a maximum depth
error of 0.01 percent, which does not warrant adjustment of depth values on the logs.
Discussion of Induction / Natural Gamma Results
Conductivity and natural gamma profiles suggest interbedding of varying materials, and
correspond with changes in the televiewer logs.
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Quality Assurance
These televiewer measurements were performed using industry-standard or better methods for
both measurements and analyses. All work was performed under GEOVision quality assurance
procedures, which include:
Use of NIST-traceable calibrations, where applicable, for field and laboratory
instrumentation;
Use of standard field data logs;
Use of independent verification of orientation and plunge by comparison of measured values
to as built information and reference structures, such as casing shoe or water surface, when
available.
Televiewer Data Reliability
Depth indications are very reliable with estimated precision of +/- 0.2 feet. Estimated precision
of dip and azimuth of dip is +/- 5 degrees. Standardized field procedures and quality assurance
checks add to the reliability of these data.
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 15 of 63
BORING DATES COORDINATES (1) ELEVATION (1)
DESIGNATION LOGGED NORTHING EASTING (FEET, MSL)
B-12 4/12/2013 (1) Coordinates provided by Shannon & Wilson
Table 1. Boring locations and logging dates
BORING TOOL AND RUN NUMBER
DEPTH RANGE (FEET)
OPEN HOLE (FEET)
DEPTH TO BOTTOM
OF CASING (FEET)
SAMPLE INTERVAL
(FEET)
DATE LOGGED
B-12 INDUCTION/GAMMA 01 129.8 2.5 130 3 0.05 4/12/2013B-12 ACOUSTIC TELEVIEWER 01 1.9 129.5 130 3 0.004 4/12/2013
- PROBE DID NOT TOUCH BOTTOM OF BORING
Table 2. Logging dates and depth ranges
BORING MEAN DEVIATION
AND AZIMUTH (DEGREES TN)
SURVEY DEPTH (FEET)
VERTICAL DEPTH (FEET)
DEPTH ERROR (FEET)
HORIZONTALOFFSET (FEET)
B-12 0.8 N178.9 129.46 129.44 0.02 1.75
Table 3. Televiewer Deviation Data Summary
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 16 of 63
Figure 1: Concept illustration of televiewer probe
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 17 of 63
Table 4. Boring B-12, Acoustic Structure depth, dip azimuth, dip and description
Depth Dip Structure
(feet) azimuth Dip
description
11.1 N335 37 Primary-structure Planar Bedding
13.2 N019 10 Primary-structure Planar Bedding
18.9 N165 46 Primary-structure Planar Bedding
19.2 N043 73 Fracture Planar Hairline-fracture
19.8 N098 38 Fracture Planar Hairline-fracture
21.2 N107 78 Fracture Planar Hairline-fracture
21.3 N350 31 Primary-structure Planar Bedding
22.2 N036 37 Primary-structure Planar Bedding
22.5 N021 42 Fracture Planar Hairline-fracture
24.4 N360 49 Fracture Planar Hairline-fracture
25.2 N020 67 Fracture Planar Hairline-fracture
27.1 N234 6 Primary-structure Planar Bedding
27.5 N147 5 Primary-structure Planar Bedding
27.9 N162 6 Primary-structure Planar Bedding
28.6 N157 22 Fracture Planar Hairline-fracture
29.1 N099 84 Fracture Planar Hairline-fracture
29.7 N141 20 Fracture Planar Hairline-fracture
30.9 N196 14 Primary-structure Planar Bedding
31.6 N202 11 Primary-structure Planar Bedding
32.1 N193 14 Primary-structure Planar Bedding
32.5 N185 15 Primary-structure Planar Bedding
33.2 N080 52 Fracture Planar Hairline-fracture
35.5 N185 16 Primary-structure Planar Bedding
40.9 N173 17 Primary-structure Planar Bedding
43.4 N106 57 Fracture Planar Hairline-fracture
53.0 N270 81 Fracture Planar Hairline-fracture
53.2 N092 81 Fracture Planar Hairline-fracture
55.0 N000 25 Primary-structure Planar Bedding
55.2 N169 25 Primary-structure Planar Bedding
55.5 N172 18 Primary-structure Planar Bedding
55.7 N033 76 Fracture Planar Hairline-fracture
56.2 N136 13 Primary-structure Planar Bedding
57.8 N087 63 Fracture Planar Hairline-fracture
58.4 N110 67 Fracture Planar Hairline-fracture
62.0 N090 62 Fracture Planar Hairline-fracture
62.2 N107 80 Fracture Planar Hairline-fracture
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 18 of 63
Depth Dip Structure
(feet) azimuth Dip
description
62.9 N023 21 Primary-structure Planar Bedding
63.3 N116 37 Fracture Planar Hairline-fracture
65.3 N253 15 Primary-structure Planar Bedding
67.5 N300 14 Primary-structure Planar Bedding
67.7 N256 61 Fracture Planar Hairline-fracture
67.9 N026 84 Fracture Planar Hairline-fracture
68.2 N113 11 Primary-structure Planar Bedding
68.4 N097 6 Primary-structure Planar Bedding
68.6 N091 6 Primary-structure Planar Bedding
68.9 N078 3 Primary-structure Planar Bedding
71.6 N113 43 Fracture Planar Hairline-fracture
78.3 N131 41 Primary-structure Planar Bedding
79.2 N152 11 Primary-structure Planar Bedding
79.3 N266 75 Fracture Planar Hairline-fracture
79.3 N146 21 Primary-structure Planar Bedding
80.1 N097 64 Fracture Planar Hairline-fracture
80.9 N094 1 Fracture Planar Open-fracture
81.1 N213 5 Fracture Planar Open-fracture
82.8 N044 83 Fracture Planar Hairline-fracture
85.4 N086 81 Fracture Planar Hairline-fracture
91.7 N108 68 Fracture Planar Hairline-fracture
92.8 N064 55 Fracture Planar Hairline-fracture
94.1 N110 46 Fracture Planar Hairline-fracture
96.9 N301 57 Fracture Planar Hairline-fracture
97.8 N114 63 Fracture Planar Hairline-fracture
98.6 N122 4 Primary-structure Planar Bedding
99.8 N202 8 Primary-structure Planar Bedding
100.1 N071 1 Primary-structure Planar Bedding
101.0 N097 36 Fracture Planar Hairline-fracture
101.9 N313 56 Fracture Planar Hairline-fracture
101.9 N253 85 Fracture Planar Hairline-fracture
103.3 N140 4 Primary-structure Planar Bedding
104.2 N108 7 Primary-structure Planar Bedding
105.3 N134 35 Fracture Planar Hairline-fracture
105.3 N086 80 Fracture Planar Hairline-fracture
105.7 N141 13 Primary-structure Planar Bedding
106.2 N097 3 Fracture Planar Hairline-fracture
106.7 N104 7 Primary-structure Planar Bedding
107.2 N114 83 Fracture Planar Hairline-fracture
GEOVision Report 13120-01 White Point Boring B-12 Surveys rev 0 April 19, 2013 Page 19 of 63
Depth Dip Structure
(feet) azimuth Dip
description
108.7 N143 2 Primary-structure Planar Bedding
109.2 N105 55 Fracture Planar Hairline-fracture
109.5 N092 4 Primary-structure Planar Bedding
110.2 N220 72 Fracture Planar Hairline-fracture
110.6 N063 18 Fracture Planar Hairline-fracture
110.7 N121 78 Fracture Planar Hairline-fracture
111.0 N255 64 Fracture Planar Hairline-fracture
111.8 N095 9 Primary-structure Planar Bedding
112.2 N165 57 Fracture Planar Hairline-fracture
112.9 N120 6 Primary-structure Planar Bedding
113.1 N159 7 Primary-structure Planar Bedding
113.3 N118 77 Fracture Planar Hairline-fracture
113.4 N278 61 Fracture Planar Hairline-fracture
113.7 N070 46 Fracture Planar Hairline-fracture
114.9 N101 77 Fracture Planar Hairline-fracture
116.4 N110 6 Primary-structure Planar Bedding
117.3 N102 6 Primary-structure Planar Bedding
117.4 N096 62 Fracture Planar Open-fracture
118.3 N114 46 Fracture Planar Hairline-fracture
118.9 N141 64 Fracture Planar Hairline-fracture
120.6 N062 43 Primary-structure Planar Bedding
120.9 N064 36 Primary-structure Planar Bedding
123.5 N093 66 Fracture Planar Hairline-fracture
123.9 N121 52 Fracture Planar Hairline-fracture
125.1 N194 11 Primary-structure Planar Bedding
126.2 N265 25 Fracture Planar Hairline-fracture
126.3 N120 36 Fracture Planar Hairline-fracture
127.1 N196 39 Fracture Planar Hairline-fracture
127.5 N227 68 Fracture Planar Hairline-fracture
127.5 N133 44 Fracture Planar Hairline-fracture
128.6 N230 44 Fracture Planar Hairline-fracture
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Figure 2. Boring B-12, Acoustic Deviation Projection
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Figure 3. Boring B-12, Induction and natural gamma logs
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APPENDIX A
PROCESSED TELEVIEWER LOGS WITH FRACTURE AND BEDDING DEPTHS, DIPS, AND DIP AZIMUTHS
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APPENDIX B
ACOUSTIC TELEVIEWER BASED CALIPER LOGS
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White Point Landslide Boring B-12 Acoustic Televiewer Derived Caliper rev 1 Sheet 4 of 18
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APPENDIX C
INDUCTION AND NATURAL GAMMA LOGS
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Depth
Feet
1in:10ft
Natural Gamma
B-12
0 200CPS
Conductivity (short-spacing)
0 400mS/m
Conductivity (long-spacing)
0 400mS/m
0
10
20
30
40
50
60
70
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Depth
Feet
1in:10ft
Natural Gamma
B-12
0 200CPS
Conductivity (short-spacing)
0 400mS/m
Conductivity (long-spacing)
0 400mS/m
80
90
100
110
120
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