AERIAL LIDAR SURVEY Chef Menteur Project February 17, 2017 Submitted to: Matt Conn Director of Operations SEG Environmental LLC 224 Rue De Jean Lafayette, LA 70508 Submitted by: Fugro, Inc. 200 Dulles Drive Lafayette, Louisiana 70506 Job No. 22.17800026 A member of the Fugro group of companies with offices throughout the world. 1 TABLE OF CONTENTS 1.0 GPS NETWORK SUMMARY AND MAP 2.0 CONTROL DESCRIPTION SHEETS 3.0 FIELD NOTES 1.0 GPS NETWORK SUMMARY AND MAP SEG Chef Menteur Fugro Job # 22.17800026 February 2017 GPS PUB. PUB. NAVD 88 GEOID 09 NAVD 88 DELTA NAME POSITION ELLIP ELEV. HEIGHT ELEV. GPS NGS PID DESCRIPTION (NAD83) METERS METERS METERS METERS METERS BORG 30 04 15.16783 N -23.711 2.577 -26.288 2.589 -0.012 BH1134 Vertical Offset of "E 3146" 89 48 05.02694 W FTPK 30 09 56.40531 N -24.835 1.682 -26.517 1.723 -0.041 BH1164 Vertical Offset of "PIKE RESET" 89 44 20.88068 W MARY 30 01 22.70956 N -22.901 3.272 -26.173 DO8512 MARY_289 LSU C4G CORS ARP 89 54 46.80194 W MSIN 30 18 42.20573 N -17.309 9.739 -27.049 DN8737 INFINITY CENTER CORS ARP 89 36 15.50727 W SJHS 30 16 49.45698 N -12.897 13.849 -26.746 GulfNet SJHS 89 46 47.85767 W Note: The positions of the stations listed above are referenced to NAD83 (2011) (EPOCH 2010.0) horizontally & NAVD88 vertically. These coordinates were used as control for the FLI-MAP survey performed in February 2017. Fugro utilized FM400-006 for data collection. The horizontal positions were computed in a least squares adjustment of the GPS data by holding to the published NAD83 (2011) positions of CORS: "MARY" and "MSIN". The vertical positions (ellipsoidal heights) were computed in a least squares adjustment of the GPS data by holding to the published NAD83 (2011) (EPOCH 2010.0) ellipsoidal height of CORS: "MSIN". The NAVD88 orthometric height (elevation) was computed by applying GEOID 09 to the computed ellipsoidal height of each station. The elevations listed above (in black) are published NAVD88 elevations. The elevations listed above (in blue) are GPS derived elevations (orthometric heights) referenced to NAVD88. ➤ © 2016 Googlle N IImage © 2016 TerrrraMettrriics © 2016 Google Image © 2016 TerraMetrics Fugro, Inc. 200 Dulles drive Lafayette, LA 70506 Project Information Coordinate System Name: D:\Data\Trimble Business Name: US State Plane 1983 Center\22.17800026 SEG.vce Datum: NAD 1983 (Conus) Size: 349 KB Zone: Louisiana South 1702 Modified: 2/13/2017 8:19:23 PM (UTC:-6) Geoid: GEOID09 (Conus) Time zone: Central Standard Time Vertical datum: Reference 22.17800026 number: Description: Chef Menteur Project Network Adjustment Report Adjustment Settings Set-Up Errors GNSS Error in Height of Antenna: 0.001 m Centering Error: 0.001 m Covariance Display Horizontal: Propagated Linear Error [E]: U.S. Constant Term [C]: 0.000 m Scale on Linear Error [S]: 1.960 Three-Dimensional Propagated Linear Error [E]: U.S. Constant Term [C]: 0.000 m Scale on Linear Error [S]: 1.960 Adjustment Statistics Number of Iterations for Successful Adjustment: 2 Network Reference Factor: 0.99 Chi Square Test (95%): Passed Precision Confidence Level: 95% Degrees of Freedom: 15 Post Processed Vector Statistics Reference Factor: 0.99 Redundancy Number: 15.00 A Priori Scalar: 0.48 Control Coordinate Comparisons Values shown are control coordinates minus adjusted coordinates. ΔEasting ΔNorthing ΔElevation ΔHeight Point ID (Meter) (Meter) (Meter) (Meter) BORG ? ? ? 0.012 FTPK ? ? ? 0.041 MARY ? ? ? 0.004 SJHS -0.014 -0.013 ? -0.037 Control Point Constraints East σ North σ Height σ Elevation σ Point ID Type (Meter) (Meter) (Meter) (Meter) MARY Local Fixed Fixed MSIN Local Fixed Fixed Fixed Fixed = 0.000001(Meter) Adjusted Grid Coordinates Point Easting Easting Error Northing Northing Error Elevation Elevation Error Constraint ID (Meter) (Meter) (Meter) (Meter) (Meter) (Meter) BORG 1147690.488 0.001 175110.342 0.001 2.577 0.008 FTPK 1153546.553 0.001 185698.139 0.001 1.682 0.007 MARY 1136997.378 ? 169662.105 ? 3.272 0.011 LL MSIN 1166287.185 ? 202074.757 ? 9.739 ? LLh SJHS 1149442.113 0.001 198361.378 0.001 13.849 0.008 Adjusted Geodetic Coordinates Height Height Error Point ID Latitude Longitude Constraint (Meter) (Meter) BORG N30°04'15.16783" W89°48'05.02694" -23.711 0.008 FTPK N30°09'56.40531" W89°44'20.88068" -24.835 0.007 MARY N30°01'22.70956" W89°54'46.80194" -22.901 0.011 LL MSIN N30°18'42.20573" W89°36'15.50727" -17.309 ? LLh SJHS N30°16'49.45698" W89°46'47.85767" -12.897 0.008 Adjusted ECEF Coordinates Point X X Error Y Y Error Z Z Error 3D Error Constraint ID (Meter) (Meter) (Meter) (Meter) (Meter) (Meter) (Meter) - BORG 19148.783 0.001 0.007 3177164.008 0.004 0.008 5524270.095 - FTPK 25127.939 0.001 0.007 3186252.471 0.004 0.008 5518972.509 - MARY 8392.287 ? ? 3172567.637 ? ? LL 5526956.584 - MSIN 38058.598 ? ? 3200244.368 ? ? LLh 5510750.869 - SJHS 21170.761 0.001 0.007 3197248.810 0.004 0.008 5512596.933 Error Ellipse Components Semi-major axis Semi-minor axis Point ID Azimuth (Meter) (Meter) BORG 0.002 0.002 36° FTPK 0.001 0.001 30° SJHS 0.002 0.002 39° 2.0 CONTROL DESCRIPTION SHEETS STATION NAME: “E 3146” PID: BH1134 JCLS IDENTIFIER: VERTICALLY OFFSET TO “BORG” Monument Location: To reach the station from the intersection of US-90 and US-11, E of New Orleans, LA, travel NE on US- 90 for 4.1 miles to the station on the left. Station is 5/8” rebar set 2” below the surface, 41.5' SW of a cable warning post, 27.5' N of the centerline of the road and 72.0' SW of a power pole. Published NAVD88 (Meters) Elevation = 1.58 Leveled NAVD88 (Meters) Elevation = 2. 2.589 Adjusted NAD 83 (2011) (EPOCH 2010.0) Lat. N 30 04 15.16783 Long. W 89 48 05.02694 Adjusted NAVD88 (Meters) Elevation = 2.577 *********************************************************************** HT_MOD - This is a Height Modernization Survey Station. TIDAL BM - This is a Tidal Bench Mark. DESIGNATION - E 3146 = VERTICALLY OFFSET TO “BORG” PID - BH1134 STATE/COUNTY- LA/ORLEANS COUNTRY - US USGS QUAD - CHEF MENTEUR (1994) *CURRENT SURVEY CONTROL ______________________________________________________________________ NAD 83(2011) POSITION- 30 04 14.05633(N) 089 48 05.39179(W) ADJUSTED NAD 83(2011) ELLIP HT- -24.716 (meters) (06/27/12) ADJUSTED NAD 83(2011) EPOCH - 2010.00 NAVD 88 ORTHO HEIGHT - 1.58 (meters) 5.2 (feet) GPS OBS NAVD 88 EPOCH - 2009.55 **This station is located in a suspected subsidence area (see below). ______________________________________________________________________ NAVD 88 orthometric height was determined with geoid model GEOID12A GEOID HEIGHT - -26.298 (meters) GEOID12A GEOID HEIGHT - -26.298 (meters) GEOID12B NAD 83(2011) X - 19,139.068 (meters) COMP NAD 83(2011) Y - -5,524,286.409 (meters) COMP NAD 83(2011) Z - 3,177,133.885 (meters) COMP LAPLACE CORR - -0.58 (seconds) DEFLEC12B Network accuracy estimates per FGDC Geospatial Positioning Accuracy Standards: FGDC (95% conf, cm) Standard deviation (cm) CorrNE Horiz Ellip SD_N SD_E SD_h (unitless) ------------------------------------------------------------------- NETWORK 0.43 2.06 0.11 0.21 1.05 0.02347032 ------------------------------------------------------------------- The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in June 2012. NAD 83(2011) refers to NAD 83 coordinates where the reference frame has been affixed to the stable North American tectonic plate. See NA2011 for more information. The horizontal coordinates are valid at the epoch date displayed above which is a decimal equivalence of Year/Month/Day. ** This station is in an area of known vertical motion. Due to the variability of land subsidence, uplift, and crustal motion, NGS has, determined the orthometric heights for marks in these suspect subsidence areas should be considered valid only at the epoch date associated with the orthometric height. These heights must always be validated when used as control. All previously superseded orthometric heights are now considered suspect and are available in the superseded section. NGS does not recommend using suspect or superseded heights as control. The orthometric height was determined by GPS observations and a high-resolution geoid model using precise GPS observation and processing techniques. Significant digits in the geoid height do not necessarily reflect accuracy. GEOID12B height accuracy estimate available here. This Tidal Bench Mark is designated as VM 19148 by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. This Tidal Bench Mark is designated as VM 21274 by the CENTER FOR OPERATIONAL OCEANOGRAPHIC PRODUCTS AND SERVICES. The Laplace correction was computed from DEFLEC12B derived deflections. The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. The X, Y, and Z were computed from the position and the ellipsoidal ht. Photographs are available for this station. The following values were computed from the NAD 83(2011) position. North East Units Scale Factor Converg. SPC LA S - 175,075.991 1,147,681.175 MT 0.99992648 +0 45 57.4 SPC LA S - 574,395.15 3,765,350.65 sFT 0.99992648 +0 45 57.4 UTM 16 - 3,329,915.137 229,939.447 MT 1.00049991 -1 24 16.5 - Elev Factor x Scale Factor = Combined Factor SPC LA S - 1.00000388 x 0.99992648 = 0.99993036 UTM 16 - 1.00000388 x 1.00049991 = 1.00050379 U.S. NATIONAL GRID SPATIAL ADDRESS: 16RBU2993929915(NAD 83) SUPERSEDED SURVEY CONTROL ELLIP H (10/11/11) -24.728 (m) GP( ) 4 1 NAD 83(2007)- 30 04 14.05642(N) 089 48 05.39265(W) AD(2002.00) A ELLIP H (03/12/08) -24.707 (m) GP(2006.81) 3 1 NAVD 88 (03/12/08) 1.58 (m) GEOID03 model