QUALITY CONTROL REPORT


Publisher	   : Chustz Surveying, Inc.
Address	   : 211 Richy Street
City/State/Zip : New Roads, LA. 70760
Phone		   : 225-638-5949 Ext. 201
Fax		   : 225-638-3924
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Revetment      : Atch River Mile 017 (Bank to Bank)
Data Filename  : A017_2x2.xyz
Client         : U.S. Army Corps of Engineers, New Orleans District
Contract Number: DACW912P8-10-D-0051

Multibeam Elevation Range : 7.57 to -100.93
Multibeam Total Data Points : 2,965,820

Lidar Bare Earth Elevation Range : 29.00 to 8.07
Lidar Total Data Points : 93,790

Approx Mile Range : Atch River RM 16.46 to Atch River RM 17.61

Vessel         : Jules Oreste
Party Chief    : Craig Villemarette
Operator       : Ken Demoulin
Computer       : Craig Villemarette

HGS Quality Control Report : 11-05-2010
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Velocity Cast performed 10-11-2010 at 06:57
Location: Atch River Mile 017
Draft 2.1
Speed of Sound : 4,877.4 ft
System: Reson Seabat 8101

Velocity Cast performed 10-12-2010 at 06:11
Location: Atch River Mile 017
Draft 2.1
Speed of Sound : 4,877.6 ft
System: Reson Seabat 8101
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Water Surface Information (NAVD88 2004.65)

	**Gage readings for this survey were established by 3rd Order
	Conventional Level Loop from monuments "TBM ODENBURG", "TBM
	WOODSIDE" and "TBM WARL 51A" to a temporary set gage near the
	water surface.**

10-11-2010
	0600	8.13
	1800	8.01

10-12-2010
	0600	8.02
	1800	8.02

10-13-2010
	0600	7.82
	1800	7.82
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NOTES: 

      1) Patch Test performed on 09-21-2010
      2) Multibeam was collected on 10-11,12-2010
	3) Lidar was collected on 10-13-2010
	4) Woodside and Provosty revetment falls within this survey area.

    **The following notes were established by a comparison of the
    current survey to the survey data for the revetments of the 2010
    Revetments project which fall within this particular survey
    data**

	6) Near range D-014 of Provosty revetment, near the edge of the mat,
	   there is an area of decrease in elevation of approximately 22 feet.
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DATA SUBMITTED:

A017_2x2.xyz		(Multibeam data gridded to 2ft by 2ft grid)
A017_LIDAR.xyz		(LiDAR Data filtered to Bare Earth)
A017_WE.xyz			(Water surface positions xyz file)
A017_STR.xyz		(Structure positions xyz file)
A017_qc.txt			(Quality Control Report)
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