12_-_Control_Survey_Report_BH_2010_rev_2011.pdf

BHI Project No. 20110242.SRVLCS

Control Surveying Report for

PAISANO PH II REACH CONTROL

STATE OF TEXAS

Alan R. Benham, PE, RPLS, CFedS

December 10, 2010 Revised April 26, 2011

Introduction:

Project control was established in support of field survey and mapping of the Paisano Ph II Levee Improvement Project with USIBWC Prime Contract No. IBM09D0008 with Task order # IBM10T0041.

Project Control Process Flowchart:

See attachment

Project Control Specifications:

Units: US Survey Foot (sft) Horizontal Datum: NAD83 (CORS 96) Vertical Datum: NAVD88 Project Height: 3729.924 sft Geoid Model used: GEOID 09 Projection: Lambert Conformal Conic State Plane and/or UTM Zone: Texas Central Zone (4203) Basis of Bearing: Grid Bearings Project Combined Factor: 0.99980233998 based on BH 11-241-101 Modification Method Used: Scaled State Plane coordinates about origin (Please scale at this point):

N: 9,842,500.000 sft or (29°40’00” N) no truncation E: 2,296,583.333 sft or (100°20’00” W) no truncation Field Methodology: Fast Static Network & NGS OPUS solution derived positions as a check – minimally constrained and adjusted with Least Squares Equipment Used: Trimble GPS Equipment (Dual Frequency Receivers) Control Set Date: November 10, 2010 – December 3, 2010 Observation Date: November 10, 2010 – December 3, 2010 Adjustment/Publication Date: December 10, 2010

Primary Control Used:

Point Latitude Longitude Ellipsoid

Height Geoid Orthometric Height Grid Northing Grid Easting Description

TXBA 31°45'56.12477"N 106°26'47.13607"W 3655.39 GEIOD09 3734.63 10658089.86 397631.55 TXDOT VRS TXEL 31°41'29.43838"N 106°16'17.60394"W 3684.67 GEIOD09 3763.99 10628237.72 450462.41 TXDOT VRS khoover Typewritten Text

Adjusted Coordinate Listing:

See Attached Control Datasheets

Point Latitude Longitude Ellipsoid Height Geoid Orthometric

Height Modified Ground Northing

Modified Ground Easting

Description

BH 11-242-017 31°46'59.96349"N 106°31'43.89415"W 3655.19 GEIOD09 3733.71 10666110.18 372029.88 Mag Nail W/Alum. Washer BH 11-242-018 31°46'38.83006"N 106°31'33.52646"W 3708.72 GEIOD09 3787.28 10663927.73 372804.72 Mag Nail W/Alum. Washer BH 11-242-019 31°46'48.36998"N 106°31'17.88926"W 3704.47 GEIOD09 3783.03 10664815.34 374206.32 PK Nail in Asphalt BH 11-242-020 31°46'32.81360"N 106°31'01.60486"W 3688.30 GEIOD09 3766.90 10663167.35 375522.71 Mag Nail W/Alum. Washer BH 11-242-021 31°46'27.15277"N 106°31'24.87049"W 3648.62 GEIOD09 3727.20 10662707.76 373485.26 Mag Nail W/Alum. Washer BH 11-242-022 31°46'07.45908"N 106°30'56.20415"W 3699.25 GEIOD09 3777.89 10660582.84 375845.94 Mag Nail W/Alum. Washer BH 11-242-023 31°46'16.85438"N 106°30'45.22449"W 3689.46 GEIOD09 3768.11 10661478.30 376845.24 Mag Nail W/Alum. Washer BH 11-242-024 31°45'58.48793"N 106°30'29.69019"W 3703.55 GEIOD09 3782.25 10659550.44 378081.47 Mag Nail W/Alum. Washer BH 11-242-025 31°45'49.50065"N 106°30'47.27571"W 3653.65 GEIOD09 3732.33 10658727.78 376514.90 Mag Nail W/Alum. Washer BH 11-242-026 31°45'35.18634"N 106°30'24.80876"W 3639.00 GEIOD09 3717.75 10657175.61 378371.69 Mag Nail W/Alum. Washer BH 11-242-027 31°45'42.17569"N 106°30'17.36581"W 3680.60 GEIOD09 3759.35 10657845.28 379052.60 Mag Nail W/Alum. Washer

Geospatial Positional Accuracy Report:

Name Horizontal Accuracy Vertical Accuracy RMS

BH 11-242-017 0.008 0.020 0.006

BH 11-242-018 0.008 0.020 0.009

BH 11-242-019 0.013 0.030 0.004

BH 11-242-020 0.000 0.000 0.016

BH 11-242-021 0.006 0.014 0.008

BH 11-242-022 0.000 0.000 0.008

BH 11-242-023 0.000 0.000 0.013

BH 11-242-024 0.011 0.031 0.015

BH 11-242-025 0.011 0.029 0.008

BH 11-242-026 0.000 0.000 0.012

BH 11-242-027 0.000 0.000 0.008

khoover khoover

Control Process

Site Recon & Set Control

Monuments

Primary Control Ties

OPUS / STATIC /

CALIBRATION

Secondary Control Ties

RTK /

CONVENTIONAL

Process & Adjust Primary Control

Process & Adjust Secondary Control

Create Datasheets Pull Paneling

Material if Required

Final Control QC Check

Finalize Control Report

Project Scoping

Specifications Determine

Methodology

Network Planning and Scheduling

ENDDelivery of Report

Kickoff Meeting

Input Control to BHI Control GIS

Database

FIELD

CONTROL

SURVEY

OFFICE

CONTROL

ADJUSTMENT

See Second Page for Method

Specific Processes khoover

FIELD

CONTROL

SURVEY

OFFICE

CONTROL

ADJUSTMENT

Site Recon & Set Control

Monuments

Create Datasheets

Concrete Monuments? Set All Monuments

Determine acceptable Location for

Maximum stability and permanence

Set All Monuments 24hr prior to Observation

NO

Y E

S

OPUS

Observations

Download & Process Through

OPUS

(while Mobilized)

Acceptable

OPUS

Solution?

NO

YES

Compile Final Control Data khoover

FIELD

CONTROL

SURVEY

OFFICE

CONTROL

ADJUSTMENT

Site Recon & Set Control

Monuments

Create Datasheets

Apply Final RTK Calibration

Set and Observe All RTK

Monuments

NO

Final Adjustment/ Processing for RTK Control

YES

Inverse between Double

Observation within Specs?

Re-Observe All RTK Monuments

Accuracy / Precision Reports

Error Reports

Download & Process All

Observations

Determine Primary Control For Calibration

Modify Control to Project coordinate

System

Calibration Observations for

RTK

(Minimum of 5 points)

Apply Field Calibration for

Residual Checks khoover

The NGS Data Sheet See file dsdata.txt for more information about the datasheet.

DATABASE = ,PROGRAM = datasheet, VERSION = 7.85

1 National Geodetic Survey, Retrieval Date = DECEMBER 9, 2010

DL3488 ***********************************************************************

DL3488 CORS - This is a GPS Continuously Operating Reference Station.

DL3488 DESIGNATION - BOTA EL PASO CORS ARP

DL3488 CORS_ID - TXBA

DL3488 PID - DL3488

DL3488 STATE/COUNTY- TX/EL PASO

DL3488 USGS QUAD - EL PASO (1997)

DL3488

DL3488 *CURRENT SURVEY CONTROL

DL3488 ___________________________________________________________________

DL3488* NAD 83(CORS)- 31 45 56.12477(N) 106 26 47.13607(W) ADJUSTED

DL3488* NAVD 88 - **(meters) **(feet)

DL3488 ___________________________________________________________________

DL3488 EPOCH DATE - 2002.00

DL3488 X - -1,536,976.162 (meters) COMP

DL3488 Y - -5,206,616.955 (meters) COMP

DL3488 Z - 3,338,946.999 (meters) COMP

DL3488 ELLIP HEIGHT- 1114.165 (meters) (06/??/09) ADJUSTED

DL3488 GEOID HEIGHT- -24.15 (meters) GEOID09

DL3488 HORZ ORDER - SPECIAL (CORS)

DL3488 ELLP ORDER - SPECIAL (CORS)

DL3488

DL3488.ITRF positions are available for this station.

DL3488.The coordinates were established by GPS observations

DL3488.and adjusted by the National Geodetic Survey in June 2009.

DL3488.The coordinates are valid at the epoch date displayed above.

DL3488.The epoch date for horizontal control is a decimal equivalence

DL3488.of Year/Month/Day.

DL3488

DL3488

khoover

DL3488.The PID for the CORS L1 Phase Center is DL3489.

DL3488

DL3488.The XYZ, and position/ellipsoidal ht. are equivalent.

DL3488

DL3488.The ellipsoidal height was determined by GPS observations

DL3488.and is referenced to NAD 83.

DL3488

DL3488.The geoid height was determined by GEOID09.

DL3488

DL3488; North East Units Scale Factor Converg.

DL3488;SPC TX C - 3,248,592.288 121,198.339 MT 0.99997049 -3 08 55.0

DL3488;SPC TX C -10,658,089.86 397,631.55 sFT 0.99997049 -3 08 55.0

DL3488

DL3488! - Elev Factor x Scale Factor = Combined Factor

DL3488!SPC TX C - 0.99982508 x 0.99997049 = 0.99979558

DL3488

DL3488 SUPERSEDED SURVEY CONTROL

DL3488

DL3488.No superseded survey control is available for this station.

DL3488

DL3488_U.S. NATIONAL GRID SPATIAL ADDRESS: 13RCR6302415363(NAD 83)

DL3488_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA

DL3488

DL3488 STATION DESCRIPTION

DL3488

DL3488'DESCRIBED BY NATIONAL GEODETIC SURVEY 2009

DL3488'STATION IS A GPS CORS. LATEST INFORMATION INCLUDING POSITIONS AND

DL3488'VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES ACCESSIBLE

DL3488'BY ANONYMOUS FTP OR THE WORLDWIDE WEB.

DL3488' FTP CORS.NGS.NOAA.GOV: CORS/COORD AND CORS/STATION_LOG

DL3488' HTTP://WWW.NGS.NOAA.GOV/CORS.

*** retrieval complete.

Elapsed Time = 00:00:00 khoover

The NGS Data SheetSee file dsdata.txt for more information about the datasheet.

DATABASE = ,PROGRAM = datasheet, VERSION = 7.85

1 National Geodetic Survey, Retrieval Date = DECEMBER 9, 2010

DF5389 ***********************************************************************

DF5389 CORS - This is a GPS Continuously Operating Reference Station.

DF5389 DESIGNATION - EL PASO RRP2 CORS ARP

DF5389 CORS_ID - TXEL

DF5389 PID - DF5389

DF5389 STATE/COUNTY- TX/EL PASO

DF5389 USGS QUAD - YSLETA (1994)

DF5389

DF5389 *CURRENT SURVEY CONTROL

DF5389 ___________________________________________________________________

DF5389* NAD 83(CORS)- 31 41 29.43838(N) 106 16 17.60394(W) ADJUSTED

DF5389* NAVD 88 - **(meters) **(feet)

DF5389 ___________________________________________________________________

DF5389 EPOCH DATE - 2002.00

DF5389 X - -1,522,290.825 (meters) COMP

DF5389 Y - -5,215,438.379 (meters) COMP

DF5389 Z - 3,331,963.971 (meters) COMP

DF5389 ELLIP HEIGHT- 1123.088 (meters) (05/??/03) ADJUSTED

DF5389 GEOID HEIGHT- -24.18 (meters) GEOID09

DF5389 HORZ ORDER - SPECIAL (CORS)

DF5389 ELLP ORDER - SPECIAL (CORS)

DF5389

DF5389.ITRF positions are available for this station.

DF5389.The coordinates were established by GPS observations

DF5389.and adjusted by the National Geodetic Survey in May 2003.

DF5389.The coordinates are valid at the epoch date displayed above.

DF5389.The epoch date for horizontal control is a decimal equivalence

DF5389.of Year/Month/Day.

DF5389

DF5389

khoover

DF5389.The PID for the CORS L1 Phase Center is DF5390.

DF5389

DF5389.The XYZ, and position/ellipsoidal ht. are equivalent.

DF5389

DF5389.The ellipsoidal height was determined by GPS observations

DF5389.and is referenced to NAD 83.

DF5389

DF5389.The geoid height was determined by GEOID09.

DF5389

DF5389; North East Units Scale Factor Converg.

DF5389;SPC TX C - 3,239,493.336 137,301.217 MT 0.99995410 -3 03 30.7

DF5389;SPC TX C -10,628,237.72 450,462.41 sFT 0.99995410 -3 03 30.7

DF5389

DF5389! - Elev Factor x Scale Factor = Combined Factor

DF5389!SPC TX C - 0.99982368 x 0.99995410 = 0.99977779

DF5389

DF5389 SUPERSEDED SURVEY CONTROL

DF5389

DF5389.No superseded survey control is available for this station.

DF5389

DF5389_U.S. NATIONAL GRID SPATIAL ADDRESS: 13RCR7948906945(NAD 83)

DF5389_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA

DF5389

DF5389 STATION DESCRIPTION

DF5389

DF5389'DESCRIBED BY NATIONAL GEODETIC SURVEY 2003

DF5389'STATION IS A GPS CORS. LATEST INFORMATION INCLUDING POSITIONS AND

DF5389'VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES ACCESSIBLE

DF5389'BY ANONYMOUS FTP OR THE WORLDWIDE WEB.

DF5389' FTP CORS.NGS.NOAA.GOV: CORS/COORD AND CORS/STATION_LOG

DF5389' HTTP://WWW.NGS.NOAA.GOV/CORS.

*** retrieval complete.

Elapsed Time = 00:00:00 khoover Typewritten Text khoover

FILE: 37233152.10o 000117790

NGS OPUS SOLUTION REPORT

All computed coordinate accuracies are listed as peak-to-peak values.

For additional information: http://www.ngs.noaa.gov/OPUS/about.html#accuracy

USER: khoover@bhinc.com DATE: November 15, 2010 RINEX FILE: 3723315q.10o TIME: 15:10:45 UTC

SOFTWARE: page5 1009.28 master2.pl 1009103 START: 2010/11/11 16:34:00 EPHEMERIS: igr16094.eph [rapid] STOP: 2010/11/11 22:46:00 NAV FILE: brdc3150.10n OBS USED: 15200 / 15853 : 96%

ANT NAME: TRM_R8_GNSS NONE # FIXED AMB: 52 / 60 : 87%

ARP HEIGHT: 1.675 OVERALL RMS: 0.014(m)

REF FRAME: NAD_83(CORS96)(EPOCH:2002.0000) ITRF00 (EPOCH:2010.8625)

X: -1544409.364(m) 0.019(m) -1544410.099(m) 0.019(m) Y: -5202725.514(m) 0.027(m) -5202724.122(m) 0.027(m) Z: 3341562.029(m) 0.028(m) 3341561.868(m) 0.028(m)

LAT: 31 47 36.00572 0.016(m) 31 47 36.02052 0.016(m) E LON: 253 28 0.04064 0.025(m) 253 27 59.99881 0.025(m) W LON: 106 31 59.95936 0.025(m) 106 32 0.00119 0.025(m) EL HGT: 1112.964(m) 0.029(m) 1111.923(m) 0.029(m) ORTHO HGT: 1136.881(m) 0.052(m) [NAVD88 (Computed using GEOID09)]

UTM COORDINATES STATE PLANE COORDINATES

UTM (Zone 13) SPC (4203 TX C) Northing (Y) [meters] 3518552.309 3252119.183 Easting (X) [meters] 354837.856 113150.719 Convergence [degrees] -0.80798272 -3.19335925 Point Scale 0.99985989 0.99997706 Combined Factor 0.99968518 0.99980234

US NATIONAL GRID DESIGNATOR: 13RCR5483718552(NAD 83)

BASE STATIONS USED

PID DESIGNATION LATITUDE LONGITUDE DISTANCE(m)

DJ8945 NMDE DEMING NMDOT CORS ARP N321602.147 W1074333.826 124342.8

DG7417 P026 HATCHARPT_NM2004 CORS ARP N323932.243 W1071141.501 114484.5

DL3488 TXBA BOTA EL PASO CORS ARP N314556.124 W1062647.136 8788.3

khoover Typewritten Text

BH 11-241-101 BASE CONTROL

khoover

NEAREST NGS PUBLISHED CONTROL POINT

CE0228 12 N314800. W1063208. 771.5

BASE STATION INFORMATION

STATION NAME: nmde a 2 (Deming NMDOT; Deming, New Mexico USA)

MONUMENT: NO DOMES NUMBER

XYZ -1643934.1617 -5143044.9910 3386221.3285 MON @ 1997.0000 (M)

XYZ -0.0147 -0.0009 -0.0075 VEL (M/YR)

NEU 0.0000 0.0000 0.0000 MON TO ARP (M)

NEU 0.0003 0.0005 0.0714 ARP TO L1 PHASE CENTER (M)

NEU -0.0004 0.0001 0.0682 ARP TO L2 PHASE CENTER (M)

XYZ -0.2038 -0.0125 -0.1040 VEL TIMES 13.8616 YRS

XYZ 0.0000 0.0000 0.0000 MON TO ARP

XYZ -0.0179 -0.0575 0.0384 ARP TO L1 PHASE CENTER

XYZ -1643934.3833 -5143045.0610 3386221.2629 L1 PHS CEN @ 2010.8625

XYZ 0.0001 -0.0001 -0.0001 + XYZ ADJUSTMENTS

XYZ -1643934.3832 -5143045.0611 3386221.2628 NEW L1 PHS CEN @ 2010.8625

XYZ -1643934.3654 -5143045.0036 3386221.2245 NEW ARP @ 2010.8625

XYZ -1643934.3654 -5143045.0036 3386221.2245 NEW MON @ 2010.8625

LLH 32 16 2.16215 252 16 26.13007 1297.9106 NEW L1 PHS CEN @ 2010.8625

LLH 32 16 2.16214 252 16 26.13005 1297.8392 NEW ARP @ 2010.8625

LLH 32 16 2.16214 252 16 26.13005 1297.8392 NEW MON @ 2010.8625

STATION NAME: p026 a 2 (HATCHARPT_NM2004; Hatch, New Mexico, U.S.A.)

MONUMENT: NO DOMES NUMBER

XYZ -1589272.9011 -5135738.5163 3422845.0894 MON @ 1997.0000 (M)

XYZ -0.0148 -0.0010 -0.0073 VEL (M/YR)

NEU -0.0000 0.0000 0.0083 MON TO ARP (M)

NEU 0.0009 0.0009 0.1068 ARP TO L1 PHASE CENTER (M)

NEU 0.0002 0.0017 0.1251 ARP TO L2 PHASE CENTER (M)

XYZ -0.2052 -0.0139 -0.1012 VEL TIMES 13.8616 YRS

XYZ -0.0021 -0.0067 0.0045 MON TO ARP

XYZ -0.0256 -0.0857 0.0584 ARP TO L1 PHASE CENTER

XYZ -1589273.1339 -5135738.6225 3422845.0511 L1 PHS CEN @ 2010.8625

XYZ 0.0000 -0.0001 -0.0001 + XYZ ADJUSTMENTS

XYZ -1589273.1339 -5135738.6226 3422845.0510 NEW L1 PHS CEN @ 2010.8625

XYZ -1589273.1083 -5135738.5369 3422844.9926 NEW ARP @ 2010.8625

XYZ -1589273.1062 -5135738.5302 3422844.9882 NEW MON @ 2010.8625

LLH 32 39 32.25852 252 48 18.45546 1236.9652 NEW L1 PHS CEN @ 2010.8625

LLH 32 39 32.25849 252 48 18.45543 1236.8584 NEW ARP @ 2010.8625

LLH 32 39 32.25849 252 48 18.45543 1236.8501 NEW MON @ 2010.8625

STATION NAME: txba a 2 (BOTA EL PASO; El Paso, Texas USA)

MONUMENT: NO DOMES NUMBER

XYZ -1536976.7207 -5206615.5597 3338946.9338 MON @ 1997.0000 (M)

khoover

XYZ -0.0127 -0.0002 -0.0070 VEL (M/YR)

NEU 0.0000 0.0000 0.0000 MON TO ARP (M)

NEU 0.0003 0.0005 0.0714 ARP TO L1 PHASE CENTER (M)

NEU -0.0004 0.0001 0.0682 ARP TO L2 PHASE CENTER (M)

XYZ -0.1760 -0.0028 -0.0970 VEL TIMES 13.8616 YRS

XYZ 0.0000 0.0000 0.0000 MON TO ARP

XYZ -0.0167 -0.0582 0.0378 ARP TO L1 PHASE CENTER

XYZ -1536976.9134 -5206615.6207 3338946.8746 L1 PHS CEN @ 2010.8625

XYZ -0.0000 0.0000 0.0000 + XYZ ADJUSTMENTS

XYZ -1536976.9134 -5206615.6207 3338946.8746 NEW L1 PHS CEN @ 2010.8625

XYZ -1536976.8968 -5206615.5625 3338946.8368 NEW ARP @ 2010.8625

XYZ -1536976.8968 -5206615.5625 3338946.8368 NEW MON @ 2010.8625

LLH 31 45 56.13956 253 33 12.82221 1113.1925 NEW L1 PHS CEN @ 2010.8625

LLH 31 45 56.13955 253 33 12.82220 1113.1211 NEW ARP @ 2010.8625

LLH 31 45 56.13955 253 33 12.82220 1113.1211 NEW MON @ 2010.8625

REMOTE STATION INFORMATION

STATION NAME: 3723 1

MONUMENT: NO DOMES NUMBER

XYZ -1544410.5199 -5202725.5451 3341562.8757 MON @ 2010.8622 (M)

NEU -0.0009 -0.0000 1.6562 MON TO ARP (M)

NEU 0.0009 0.0000 0.1039 ARP TO L1 PHASE CENTER (M)

NEU -0.0019 0.0002 0.0885 ARP TO L2 PHASE CENTER (M)

XYZ -0.4007 -1.3499 0.8718 MON TO ARP

XYZ -0.0250 -0.0842 0.0555 ARP TO L1 PHASE CENTER

XYZ -1544410.9456 -5202726.9793 3341563.8030 L1 PHS CEN @ 2010.8625

BASELINE NAME: nmde 3723

XYZ 0.4312 1.4168 -0.9934 + XYZ ADJUSTMENTS

XYZ -1544410.5144 -5202725.5625 3341562.8096 NEW L1 PHS CEN @ 2010.8625

XYZ -1544410.4894 -5202725.4783 3341562.7541 NEW ARP @ 2010.8625

XYZ -1544410.0887 -5202724.1283 3341561.8823 NEW MON @ 2010.8625

LLH 31 47 36.02086 253 27 59.99925 1113.6934 NEW L1 PHS CEN @ 2010.8625

LLH 31 47 36.02083 253 27 59.99925 1113.5895 NEW ARP @ 2010.8625

LLH 31 47 36.02086 253 27 59.99925 1111.9333 NEW MON @ 2010.8625

BASELINE NAME: p026 3723

XYZ 0.4198 1.4131 -1.0082 + XYZ ADJUSTMENTS

XYZ -1544410.5258 -5202725.5661 3341562.7948 NEW L1 PHS CEN @ 2010.8625

XYZ -1544410.5008 -5202725.4819 3341562.7393 NEW ARP @ 2010.8625

XYZ -1544410.1001 -5202724.1320 3341561.8675 NEW MON @ 2010.8625

LLH 31 47 36.02034 253 27 59.99888 1113.6914 NEW L1 PHS CEN @ 2010.8625

LLH 31 47 36.02031 253 27 59.99888 1113.5875 NEW ARP @ 2010.8625

LLH 31 47 36.02034 253 27 59.99888 1111.9313 NEW MON @ 2010.8625

BASELINE NAME: txba 3723

XYZ 0.4119 1.4402 -1.0217 + XYZ ADJUSTMENTS

XYZ -1544410.5337 -5202725.5391 3341562.7813 NEW L1 PHS CEN @ 2010.8625

khoover

XYZ -1544410.5087 -5202725.4548 3341562.7258 NEW ARP @ 2010.8625

XYZ -1544410.1080 -5202724.1049 3341561.8540 NEW MON @ 2010.8625

LLH 31 47 36.02037 253 27 59.99830 1113.6641 NEW L1 PHS CEN @ 2010.8625

LLH 31 47 36.02034 253 27 59.99830 1113.5602 NEW ARP @ 2010.8625

LLH 31 47 36.02037 253 27 59.99830 1111.9040 NEW MON @ 2010.8625

G-FILES

Axx20101111 101111 B201011111633 1011112245 1 page5 v1009.28IGS 226 1 2 27NGS 20101115IFDDFX Iant_info.003 NGS 20101019

C00090001 -995242767 20 596791247 24 446593422 17 X3150A3723X3150ANMDE

D 1 2 730427 1 3 -7696942 2 3 -5143758

Axx20101111 101111 B201011111633 1011112245 1 page5 v1009.28IGS 226 1 2 27NGS 20101115IFDDFX Iant_info.003 NGS 20101019

C00090002 -448630061 12 669856018 23 812831207 19 X3150A3723X3150AP026

D 1 2 1250929 1 3 -8236637 2 3 -1754745

Axx20101111 101111 B201011111633 1011112245 1 page5 v1009.28IGS 226 1 2 27NGS 20101115IFDDFX Iant_info.003 NGS 20101019

C00090003 74332112 24 -38914576 29 -26150172 21 X3150A3723X3150ATXBA

D 1 2 1186321 1 3 -7207777 2 3 -6586458

POST-FIT RMS BY SATELLITE VS. BASELINE

OVERALL 02 04 05 08 09 10 11 12

nmde-3723| 0.014 0.011 0.014 0.017 0.018 0.011 0.012 ... 0.012 15 17 18 21 25 26 27 28 29 nmde-3723| 0.017 0.019 0.020 0.016 0.014 0.014 0.014 0.012 0.015 nmde-3723| 0.020

OVERALL 02 04 05 08 09 10 11 12

p026-3723| 0.013 0.010 0.017 0.015 0.026 0.012 0.012 ... 0.012 15 17 18 21 25 26 27 28 29 p026-3723| 0.018 0.009 0.018 0.016 0.013 0.015 0.012 0.010 0.012 p026-3723| 0.019

OVERALL 02 04 05 08 09 10 11 12

txba-3723| 0.014 0.013 0.019 0.016 0.028 0.014 0.013 ... 0.012 15 17 18 21 25 26 27 28 29 txba-3723| 0.017 0.017 0.022 0.016 0.013 0.014 0.018 0.013 0.012 txba-3723| 0.017 khoover

OBS BY SATELLITE VS. BASELINE

OVERALL 02 04 05 08 09 10 11 12

nmde-3723| 5119 728 67 187 78 419 541 ... 635 15 17 18 21 25 26 27 28 29 nmde-3723| 113 343 58 160 422 145 389 239 322 nmde-3723| 273

OVERALL 02 04 05 08 09 10 11 12

p026-3723| 5127 730 81 158 69 425 530 ... 635 15 17 18 21 25 26 27 28 29 p026-3723| 103 356 58 160 451 142 392 221 333 p026-3723| 283

OVERALL 02 04 05 08 09 10 11 12

txba-3723| 4954 717 84 174 71 403 519 ... 607 15 17 18 21 25 26 27 28 29 txba-3723| 82 350 42 140 441 138 363 229 314 txba-3723| 280

Covariance Matrix for the xyz OPUS Position (meters^2).

0.0000024889 0.0000000338 -0.0000001806

0.0000000338 0.0000043244 -0.0000001528 -0.0000001806 -0.0000001528 0.0000024244

Covariance Matrix for the enu OPUS Position (meters^2).

0.0000026191 -0.0000003581 0.0000003343 -0.0000003581 0.0000027342 -0.0000007011

0.0000003343 -0.0000007011 0.0000038844

Horizontal network accuracy = 0.00401 meters.

Vertical network accuracy = 0.00386 meters.

Derivation of NAD 83 vector components

Position of reference station ARP in NAD_83(CORS96)(EPOCH:2002.0000).

Xa(m) Ya(m) Za(m)

NMDE -1643933.61102 -5143046.37755 3386221.38031 2002.00

P026 -1589272.35122 -5135739.90821 3422845.14727 2002.00

TXBA -1536976.16239 -5206616.95458 3338946.99919 2002.00

Position of reference station monument in NAD_83(CORS96)(EPOCH:2002.0000).

Xr(m) Yr(m) Zr(m)

NMDE -1643933.61102 -5143046.37755 3386221.38031 2002.00

P026 -1589272.34912 -5135739.90151 3422845.14277 2002.00 khoover

TXBA -1536976.16239 -5206616.95458 3338946.99919 2002.00

Velocity of reference station monument in NAD_83(CORS96)(EPOCH:2002.0000).

Vx (m/yr) Vy (m/yr) Vz (m/yr)

NMDE 0.00000 0.00000 0.00000

P026 0.00050 -0.00010 0.00000

TXBA 0.00180 0.00070 0.00020

Vectors from unknown station monument to reference station monument in NAD_83(CORS96)(EPOCH:2002.0000).

Xr-X= DX(m) Yr-Y= DY(m) Zr-Z= DZ(m)

NMDE -99524.24702 59679.13645 44659.35131 2002.00

P026 -44862.98512 66985.61249 81283.11377 2002.00

TXBA 7433.20161 -3891.44058 -2615.02981 2002.00

STATE PLANE COORDINATES - U.S. Survey Foot

SPC (4203 TX C)

Northing (Y) [feet] 10669661.020 Easting (X) [feet] 371228.650 Convergence [degrees] -3.19335925 Point Scale 0.99997706 Combined Factor 0.99980234

** Orthometric Heights Above Future Geopotential Datum.

Prototype orthometric heights are now being made available as a precursor to the completion of GRAV-D and the replacement of NAVD 88 with a new geopotential reference system. The following height reflects the current best estimate of the true orthometric height, based on the existing gravimetric geoid model. This height is subject to change as data and modeling for the gravimetric geoid change throughout the lifetime of the GRAV-D project, or as new realizations of the ITRF are adopted. However, at the completion of GRAV-D, these heights will supersede the NAVD 88 heights

APPROX ORTHO HGT: 1136.562 (m) [PROTOTYPE (Computed using

USGG2009,GRS80,ITRF2000)]

This position and the above vector components were computed without any knowledge by the National Geodetic Survey regarding the equipment or field operating procedures used.

DN: cn=Alan R.

Benham, o=Bohannan Huston, Inc., ou=Survey, email=abenham@ bhinc.com, c=US Date: 2011.03.10 15:52:28 -07'00' khoover khoover

Name of Station:

State:

County:

Establishing Group:

Date: BST Project #:

Type/Composition: 2"DIA. ALUMINUM CAP Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Francisco Garcia Grant

GEOID09

Texas Central 4203

3,651.45

10,669,661.02

370,848.009 USFtEasting:

-3ø11'36"

Project Combined Factor:

BH 11-241-101

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

OPUS

Orthometric Height:

106ø31'59.95936"W

OPUS

New Mexico

Dona Ana

20-Nov-10 20110241

* * MODIFIED COORDINATES * *

371,228.65

Grant:

Location Description:

3,729.918 USFt

NAD 1983

31ø47'36.00571"N

BH 11-241-101

Point Scale Factor:

Point Δα:

1.000197699

1.00000042

Northing: USFt10,669,824.549

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Ciudad Juarez, Mexico

GEOID09

Texas Central 4203

3,655.19

10,665,947.39

372,029.881 USFtEasting:

-3ø11'28"

Project Combined Factor:

BH 11-242-017

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø31'43.89415"W

Static

Mexico

Chihuahua

10-Nov-10 20110242

* * MODIFIED COORDINATES * *

372,410.29

Grant:

Location Description:

3,733.711 USFt

NAD 1983

31ø46'59.96349"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999785

Northing: USFt10,666,110.184

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Ciudad Juarez, Mexico

GEOID09

Texas Central 4203

3,708.72

10,663,765.37

372,804.717 USFtEasting:

-3ø11'22"

Project Combined Factor:

BH 11-242-018

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø31'33.52646"W

Static

Mexico

Chihuahua

11-Nov-10 20110242

* * MODIFIED COORDINATES * *

373,184.97

Grant:

Location Description:

3,787.283 USFt

NAD 1983

31ø46'38.83006"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.9999939

Northing: USFt10,663,927.730

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: PKNAIL IN ASPHALT Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

El Paso, Texas

GEOID09

Texas Central 4203

3,704.47

10,664,652.80

374,206.318 USFtEasting:

-3ø11'14"

Project Combined Factor:

BH 11-242-019

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø31'17.88926"W

Static

Texas

El Paso

12-Nov-10 20110242

* * MODIFIED COORDINATES * *

374,586.30

Grant:

Location Description:

3,783.034 USFt

NAD 1983

31ø46'48.36998"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999473

Northing: USFt10,664,815.342

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: PKNAIL IN ASPHALT Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

El Paso, Texas

GEOID09

Texas Central 4203

3,688.30

10,663,005.14

375,522.707 USFtEasting:

-3ø11'06"

Project Combined Factor:

BH 11-242-020

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø31'01.60486"W

Static

Texas

El Paso

16-Nov-10 20110242

* * MODIFIED COORDINATES * *

375,902.42

Grant:

Location Description:

3,766.904 USFt

NAD 1983

31ø46'32.81360"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999448

Northing: USFt10,663,167.351

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Ciudad Juarez, Mexico

GEOID09

Texas Central 4203

3,648.62

10,662,545.64

373,485.255 USFtEasting:

-3ø11'18"

Project Combined Factor:

BH 11-242-021

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø31'24.87049"W

Static

Mexico

Chihuahua

11-Nov-10 20110242

* * MODIFIED COORDINATES * *

373,865.38

Grant:

Location Description:

3,727.204 USFt

NAD 1983

31ø46'27.15277"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.999996

Northing: USFt10,662,707.764

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Ciudad Juarez, Mexico

GEOID09

Texas Central 4203

3,699.25

10,660,421.14

375,845.938 USFtEasting:

-3ø11'03"

Project Combined Factor:

BH 11-242-022

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø30'56.20415"W

Static

Mexico

Chihuahua

11-Nov-10 20110242

* * MODIFIED COORDINATES * *

376,225.59

Grant:

Location Description:

3,777.894 USFt

NAD 1983

31ø46'07.45908"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.9999923

Northing: USFt10,660,582.838

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

El Paso, Texas

GEOID09

Texas Central 4203

3,689.46

10,661,316.42

376,845.241 USFtEasting:

-3ø10'58"

Project Combined Factor:

BH 11-242-023

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø30'45.22449"W

Static

Texas

El Paso

16-Nov-10 20110242

* * MODIFIED COORDINATES * *

377,224.70

Grant:

Location Description:

3,768.111 USFt

NAD 1983

31ø46'16.85438"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999338

Northing: USFt10,661,478.302

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

El Paso, Texas

GEOID09

Texas Central 4203

3,703.55

10,659,388.94

378,081.469 USFtEasting:

-3ø10'50"

Project Combined Factor:

BH 11-242-024

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø30'29.69019"W

Static

Texas

El Paso

16-Nov-10 20110242

* * MODIFIED COORDINATES * *

378,460.68

Grant:

Location Description:

3,782.254 USFt

NAD 1983

31ø45'58.48793"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999152

Northing: USFt10,659,550.436

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Ciudad Juarez, Mexico

GEOID09

Texas Central 4203

3,653.65

10,658,566.45

376,514.901 USFtEasting:

-3ø10'59"

Project Combined Factor:

BH 11-242-025

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø30'47.27571"W

Static

Mexico

Chihuahua

11-Nov-10 20110242

* * MODIFIED COORDINATES * *

376,894.42

Grant:

Location Description:

3,732.328 USFt

NAD 1983

31ø45'49.50065"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999332

Northing: USFt10,658,727.780

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

Ciudad Juarez, Mexico

GEOID09

Texas Central 4203

3,639.00

10,657,014.58

378,371.689 USFtEasting:

-3ø10'47"

Project Combined Factor:

BH 11-242-026

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø30'24.80876"W

Static

Mexico

Chihuahua

11-Nov-10 20110242

* * MODIFIED COORDINATES * *

378,750.84

Grant:

Location Description:

3,717.747 USFt

NAD 1983

31ø45'35.18634"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.9999931

Northing: USFt10,657,175.609

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

County:

Establishing Group:

Date: BST Project #:

Type/Composition: MAGNAIL W/ALUMINUM WASHER Station Height: Flush

Stamping:

Horizontal Data Horizontal Datum: Projection:

Method:

Latitude:

Longitude:

Ellipsoid Height:

GRID Northing:

GRID Easting:

Vertical Data Vertical Datum:

Method:

Geoid:

El Paso, Texas

GEOID09

Texas Central 4203

3,680.60

10,657,684.12

379,052.597 USFtEasting:

-3ø10'43"

Project Combined Factor:

BH 11-242-027

Control Station Data

Bohannan Huston, Inc.

NAVD 1988

Static

Orthometric Height:

106ø30'17.36581"W

Static

Texas

El Paso

16-Nov-10 20110242

* * MODIFIED COORDINATES * *

379,431.62

Grant:

Location Description:

3,759.347 USFt

NAD 1983

31ø45'42.17569"N

N/A

Point Scale Factor:

Point Δα:

1.000197699

0.99999156

Northing: USFt10,657,845.284

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Vi ci ni ty M ap N ot A va il ab le

Vicinity Map: Photo (North Point of View):

Ph ot o No t Av ai la bl e

Po in t Vi ew L oo ki ng N or th

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le

Ph ot o No t Av ai la bl e

Po in t Cl os e UpVi ci ni ty M ap N ot A va il ab le khoover

M E M O R A N D U M

DATE: Wednesday, October 2, 2013

TO: URS Design Team – American Canal Project

FROM: Alan R. Benham, PE, PS, RPLS

SUBJECT: American Canal Control Data (BHI Project No 20120219)

This affidavit is intended to verify that the control report prepared by Bohannan Huston, Inc.

dated December 10, 2010 was prepared under the responsible charge of a registered surveyor, in the state of Texas.

The control report entitled “PAISANO PH II REACH CONTROL STATE OF TEXAS” signed by

Alan R. Benham on December 10, 2010 was utilized for the American Canal project under

Prime Contract #: IBM09D0008 / Task Order # 0043. This project ran parallel to the

Courchesne / Paisano Levee projects and the mapping and survey work were combined so that the projects could utilize the same base data. The control was not re-certified during the course of this project.

Control as established under the existing control report was valid as of December 10, 2010. No guarantee is made to the current validity or status of the control as of the signing of this statement. All monuments established including those monuments as may be found in Mexico were placed to support photogrammetric mapping and therefore may not necessarily be appropriate for survey occupation.

Alan R. Benham, PE, PS, RPLS, CFedS Bohannan Huston, Inc.

Courtyard I 7500 Jefferson St. NE Albuquerque, NM 87109

(505) 823-1000 abenham ARB Signature abenham

TX RPLS

abenham ARB Signature abenham Text Box 10/02/2013 abenham Text Box 10/02/13

Attachment D.pdf

CaseNarrative 1309034