ML20199K974

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Brief Aerial Photography Analysis of RBS at St Francisville,LA:1996-1997
ML20199K974
Person / Time
Site: River Bend Entergy icon.png
Issue date: 11/30/1997
From:
External (Affiliation Not Assigned)
To:
Shared Package
ML20199K959 List:
References
97-3527, NUDOCS 9712010244
Download: ML20199K974 (6)


Text

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ENCLOSURE 1 PHOTOINTERPRETATION REPORT (AERO-DATA CORPORATION 97-3527)

A BRIEF AERIAL PHOTOGRAPHY ANALYSIS OF RIVER BEND STATION AT ST. FRANCISVILLE, LOUISIANA:

1996-1997 By:

Aero-Data Corporation 9213 Interline Avenue Baton Rouge, LA 70809-1908 Phone: (504) 927-5725 Submitted to:

Entergy Services, Inc.

River Bend Station P.O. Box 220 St. Francisville, LA 70775 November 1997 0

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' I TABLE OF CONTENTS

~ 1.0- EXECUTIVE

SUMMARY

1.1 METHODS AND MATERIALS 1.2

SUMMARY

OF PRELIMINARY FINDINGS 1.3 INTERPRETEDIMAGES 8

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1.0, Executive Summary Aero-Data Corporation (ADC) has contracted with the Entergy River Bend Station to conduct a photo mission covering at least a three mile radius around the facility near St.

Francisville, Loulslana. - ADC has been providing annual plant site documentation of the facility since 1985.

This year ADC was requested to produce photographs of the facility. The current photography was compared to the previous years photography in order to identify any changes in the number of wellheads and/or pipelines surrounding the site. Changes in vegetation within the facility boundary were also identified.

The deliverables for this project include contact prints of each frame (24), a color plot showing the 1995-1996 changes, a color plot containing the frame center for each of the photographs from the current flight, and this interpretation report.

1.1 Methods and Materials The current photo mission was flown on September 29,1997 at a scale of 1'=1,500' using false color infrared (CIR) film. The frame centers of the 1997 photographic coverage are identical to those flown by ADC in 1994 and 1995. The previous photo mission was flown on September 23,1996 also at a scale of 1"=1,500' and using CIR film, it's flight lines were slightly different because of an increased interest area. ADC's most recent flight was planned using a Geographic Information System specialized for flight planning. Using this system, three flightlines were selected and 24 frames of film were shot for this mission.

The Interpretation methods for the 1997 study differ from the previous year with the introduction of soft copy (digital) photogrammetry. Previously, contact prints would be produced of the film and the area would be interpreted using mirror stereoscopes. Now the film is scanned with a highly precise photogrammetric scanner and the digital images are bmught into digital photogrammetric workstations for stereo viewing. All mapping is compiled in 3 D and locked to a chosen coordinate system.

The new methods employed in this study are superior to previous years with the increase in speed, resolution, and accuracy of mapped features. Another advantage is the ability to produce digital orthophotomosales registered to the coordinate system.

These computer generated images am relatively free of distortions and cari easily be imported into a variety of software packages for viewing and analysis.

The new methods employed in this study are superior to previous years with the increase in speed, resolution, and accuracy of mapped features.

Another advantage is the ability to produce digital orthophotomosaics registered to the coordinate system. These computer generated images are relatively free of distortions and can easily be imported into a variety of software packages for viewing and analysis.

1.2 Summary of Preliminary Find'ngs No changes in the number or size of wellheads, pipelines or transmission line right-of-ways were identified during the interpretive phase of this project. There are no significant changes in vegetation in the area immediately surrounding the cooling towers. Some construction activities are visible to the west of the immediate plant area. This construction appears to be a parking area and a small building. To the north, just across the major entrance road, a small disturbed area is visible, it's most likely cause being vehicular impact. Another disturbed area is visible just to the south of the cooling towers, at the end of a small road. Aside from these small changes, the area surrounding the Entergy River Bend facility has not changed significantly since the 1996 photomission.

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