GENERAL54236

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Name: LIST OF STIPULATIONS
• Permit Index Doc Type: STIPULATIONS
• Media Type: D
• Archive: No

Stipulation No. 13
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THE SUBSIDENCE MONITORING NETWOP.K SHALL BE SURVEYED UTILIZING
c ~ CONVENTIONAL GROUND SURVEYING TECHNIQUES, DESIGNED TO ACHIEVE HORIZONTAL
ACCURACIES COMPLYING WITH THE U.S. DEPARTMENT OF COMMERCE'S "SECOND
o%~/°° ORDER, CLASS II" SURVEY STANDARDS, A~!D VERTICAL ACCURACIES NO LESS THAN +
0.2 FEET. THIS GRID SHALL BE SURVEYED TWICE PRIOR TO THE INITIATION OF -
SUBSIDENCE. IN CONJUNCTION WITH THESE SURVEYS WECC SHALL SELECT AND
ESTABLISH A MINIMUM OF SIX TRIANGULATION BENCH MARK MONUMENTS OUTSIDE THE
AREA OF ANTICIPATED SUBSIDENCE EFFECTS, FOR THE PURPOSE OF CORRELATION
WITH AERIAL PHOTOGRAMMETRIC POST-SUBSIDENCE SURVEYS.
Stipulation No. 14
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WECC HAS REQUESTED PERMISSION TO COMPLETE A PRE-SUBSIDENCE AERIAL
.~G PHOTOGRAMMETRIC SURVEY OF THE SUBSIDENCE MONITORING GRID, FOR THE PURPOSE
'
OF CORRELATION WITH THE FIELD SURVEY RESULTS. IT IS WECC
S INTENTION TO
o~oo/°o UTILIZE AERIAL PHOTOGRAMMETRIC METHODOLOGY TD MONITOR POST-$UBSIDENCE
MOVEMENTS OF THE SUBSIDENCE MONUMENTS. THE RESULTS OF THE PRE-SUBSIDENCE
FIELD AND AERIAL PHOTOGRAMMETRIC SURVEYS SHALL BE COMPARED FOR EACH GRID
MONUMENT. THE AERIAL SURVEY WILL BE ACCEPTED AS ACCURATE AND WILL BE
USED FOR SUBSEQUENT POST-SUBSIDENCE MONITORING, IN THE EVENT THAT THE
AERIAL PHOTOGRAhJMETRIC AND FIELD SURVEYS CORRELATE WITH AN AVERAGE SURVEY
POINT LOCATION DEVIATION OF LESS THAN 0.2 FEET VERTICALLY AND
HORIZONTALLY, WITH SURVEY POINT LOCATION DEVIATIONS OF LESS THAN 0.4 FEET
VERTICALLY AND HORIZONTALLY FOR LESS THAN 45% OF THE SURVEY POINTS, AND
WITH NO SINGLE SURVEY POINT LOCATION DEVIATION VERTICALLY OR HORIZONTALLY
IN EXCESS OF 0.8 FEET.
Stipulation No. 15
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WECC HAS REQUESTED PERMISSION TO COMPLETE AERIAL PHOTOGP.AM1dETRIC SURVEYS
F6 OF 7HE SUBSIDENCE MONITORING GRID SUBSEQUENT TO THE INITIATION OF
SUBSIDENCE, FOR THE PURPOSE OF MONITORING SUBSIDENCE MONUMENT MOVEMENTS.
o/,°/ov THE ACCURACY OF THE AERIAL PHOTOGRAMMETRIC SURVEYS SHALL BE DETERMINED BY
A COMPARISON OF TRIANGULATION BENCH MARK MONUMENT FIELD AND AERIAL
PHOTOGRAMMETRIC SURVEY RESULTS FOLLOWING EACH SEMI-ANNUAL SURVEY. THE
RESULTS OF EACH AERIAL PHOTOGRAJMIETRIC SURVEY SHALL BE ACCEPTED AS
ACCURATE, IN THE EVENT THAT THE AERIAL PHOTOGRAMMETRIC AND MOST RECENT
ANNUAL TRIANGULATION MONUMENT FIELD SURVEY RESULTS CORRELATE WITH AN
AVERAGE TRIANGULATION MONUMENT LOCATION DEVIATION OF LESS THAN 0.2 FEET
VERTICALLY AND HORIZONTALLY, WITH TRIANGULATION MONUMENT LOCATION
DEVIATIONS OF LESS THAN 0.4 FEET VERTICALLY AND HORIZONTALLY FOR LESS
THAN 83% OF THE TRIANGULATION MONUMENTS, AND WITH NO SINGLE TRIANGULATION
POINT LOCATION DEVIATION VERTICALLY OR HORIZONTALLY IN EXCESS OF 0.8 FEET.
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