GENERAL39876

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Date: 6/14/1985
• Doc Name: Proposed Decision & Findings of Compliance for PR4
• From: Addition of 320 Acres
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

-4-
Stipulation No. 14: THE SUBSIDENCE MONITORING NETWORK SHALL BE SURVEYED
~ \~j UTILIZING CONVENTIONAL GROUND SURVEYING TECHNIQUES, DESIGNED TO ACHIEVE
HORIZONTAL ACCURACIES COMPLYING WITH THE U.S. DEPARTMENT OF COMMERCE'S "SECOND
ORDER, CLASS II" SURVEY STANDARDS, AND 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 WECCC 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. 15.: WECC HAS REQUESTED PERMISSION TO COMPLETE A
~ \a PRE-SUBSIDENCE AERIAL PHOTOGRAMMETRIC SURVEY OF THE SUBSIDENCE MO
GRID, FOR THE PURPOSE OF CORRELATION WITH THE FIELD SURVEY RESULT
WECC'S INTENTION TO UTILIZE AERIAL PHOTOGRAMMETRIC METHODOLOGY TO
POST-SUBSIDENCE MOVEMENTS OF THE SUBSIDENCE MONUMENTS. THE RESUL
PRE-SUBSIDENCE FIELD AND AERIAL PHOTOGRAMMETRIC SURVEYS SHALL BE
EACH GRID MONUMENT, THE AERIAL SURVEY WILL BE ACCEPTED AS ACCURA
BE USED FOR SUBSEQUENT POST-SUBSIDENCE MONITORING, IN THE EVENT T
AERIAL PHOTOGRAMMETRIC AND FIELD SURVEYS CORRELATE WITH AN AVERAG
POINT LOCATION DEVIATION OF LESS THAN 0.2 FEET VERTICALLY AND HOR
WITH SURVEY POINT LOCATION DEVIATIONS OF LESS THAN 0.4 FEET VERTI
HORIZONTALLY FOR LESS THAN 95% OF THE SURVEY POINTS, AND WITH NO
POINT LOCATION DEVIATION VERTICALLY OR HORIZONTALLY IN EXCESS OF
Stipulation No. 16: WECC HAS REQUESTED PERMISSION TO COMPLETE AE
'~ \~ PHOTOGRAMMETRIC SURVEYS OF THE SUBSIDENCE MONITORING GRID SUBSEQU
INITIATION OF SUBSIDENCE, FOR THE PURPOSE OF MONITORING SUBSIDENC
MOVEMENTS. THE ACCURACY OF THE AERIAL PHOTOGRAMMETRIC SURVEYS SH
DETERMINED BY A COMPARISON OF TRIANGULATION BENCH MARK MONUMENT F
AERIAL PHOTOGRAMMETRIC SURVEY RESULTS FOLLOWING EACH SEMI-ANNUAL
RESULTS OF EACH AERIAL PHOTOGRAMMETRIC SURVEY SHALL BE ACCEPTED A
IN THE EVENT THAT THE AERIAL PHOTOGRAMMETRIC AND MOST RECENT ANNU
TRIANGULATION MONUMENT FIELD SURVEY RESULTS CORRELATE WITH AN AVE
TRIANGULATION MONUMENT LOCATION DEVIATION OF LESS THAN 0.2 FEET V
HORIZONTALLY, WITH TRIANGULATION MONUMENT LOCATION DEVIATIONS OF
FEET VERTICALLY AND HORIZONTALLY FOR LESS THAN 83% OF THE TRIANGU
MONUMENTS, AND WITH NO SINGLE TRIANGULATION POINT LOCATION DEVIAT
VERTICALLY OR HORIZONTALLY IN EXCESS OF 0.8 FEET.
Stipulation No. 17: SIN THE EVENT THAT THE AERIAL PHOTOGRAMMETRIC
~ \1p SURVEYS FAIL TO MEET THE STIPULATED ACCURACY CRITERIA, WECC SHALL
TRADITIONAL FIELD SURVEY TECHNIQUES TO ESTABLISH THE REASONS FOR
CORRELATION. IF THE RESULTS CANNOT BE CORRELATED, WECC SHALL RES
TRADITIONAL FIELD SURVEY MONUMENT MONITORING, IN COMPLIANCE WITH
CRITERIA AND STANDARDS CONTAINED WITH STIPULATION NO. 14.
Stipulation No 18:~/ THE DIVISION DIRECTS WECC TO SUBMIT REPORTS 0
~ \~L SUBSIDENCE MONITORING PROGRAM ON A SEMI-ANNUAL BASIS, COMMENCING
AFTER THE INSTALLATION AND INITIAL SURVEYING OF THE SUBSIDENCE MO
FURTHER, DUE TO THE COMPLEXITY OF THE PERMIT AREA GEOLOGY, PRESEN
LANDSLIDES AND STEEP SLOPES, AND SENSITIVE HYDROLOGIC ELEMENTS, W
DIRECTED TO SUBMIT A PROPOSED SUBSIDENCE MONITORING
NITORING
S. IT IS
MONITOR
TS OF THE
COMPARED FOR
TE AND WILL
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E SURVEY
IZONTALLY,
CALLY AND
SINGLE SURVEY
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RIAL
ENT TO THE
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ALL BE
IELD AND
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S ACCURATE,
AL
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ERTICALLY AND
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ION
MONUMENT
UTILIZE
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UME
THE ACCURACY
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