GENERAL42275

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Name: Updated list of stips - PR-03
• Permit Index Doc Type: STIPULATIONS
• Media Type: D
• Archive: No

-6-
THE PRE-SUBSIDENCE FIELD AND AERIAL PHO'ICK;RAM~TRIC SURVEYS SHALL BE
CCk'1PARED FOR EACH GRID MONUMENT. THE AERIAL SURVEY WILL BE ACCEPTED AS
ACCURATE AND WILL BE USED FOR SUBSEQUENT FOST-SUBSIDENCE NANI70RING, IN
THE EVII~PT THAT THE AERIAL PH(7I'OGRAMMETRIC Atv'D FIELD SURVEYS CGRRELATE
WITH AN AVERAGE SURVEY POINT LCCATION DEVIATION OF LESS THAN 0.2 FELT
VERTICALLY AND HORIZONTALLY, WITH SURVEY POINT LOCATION DEVIATIONS OF
LESS THAN 0.4 FEED VERTICALLY AND HORIZONTALLY FOR LESS THAN 95$ OF THE
SURVEY POINTS, AND WITH NO SINGLE SURVEY POINT LLrATION DEVLATION
VERTICALLY OR HORIZONTALLY IN EXCESS OF 0.B FEET.
~Stioulation No. 21
i
~'~~ WECC HAS REQUESTED PERMISSION TO COMPLETE AERIAL PHOTC)GRAh~7ETRIC
SURVEYS OF THE SUBSIDENCE MONI~RING GRID SUFSEQUEP7T TO THE INITIATION
OF SUBSIDENCE, FOR THE PURPOSE OF MONITORING SUBSIDENCE MONUMENT
h1OVII~hPI5. THE ACCURACY OF THE AERIAL PH~TRIC SURVEYS SHALL BE
DETERMINED BY A COMPARISON OF TRIANGUTATION BENCH MARK MONUMENT FIELD
AND AERIAL PHOTOGRAMMETRIC SURVEY RESULTS FOLIAWING EACH SEMI-ANNUAL
SURVEY. THE RESULTS OF EACH AERIAL PHOICJGRANA7ETRIC SURVEY SHALL BE
ACCEPTED AS ACCURATE, IN THE EVENT THAT THE AERIAL PHOICGRAMMETRIC AND
MOST RECENT ANNUAL TRIANGULATION MONUMENT FIELD SURVEY RESULTS
CORRELATE WITH AN AVERAGE TRIANGULATION MONUhIIIdT LOCATION DEVIATION OF
LESS THAN 0.2 FEB'I' VERTICALLY AND HORIZONTALLY, WITH TRIANGULATION
MONUMENT LOCATION DEVIATIONS OF LESS THAN 0.4 FEET VERTICALLY AND
HORIZONTALLY FOR LESS THAN 83$ OF THE TRLANGULATION MONUhIENTS, AND WITH
NO SINGLE TRIANGULATION FOINT LOCATION DEVIATION VERTICALLY OR
HORIZONTALLY ID] EXC"c55 OF 0.8 FEET.
~ LS~ioulation No. 22
q
IN THE EVENT TFlAT THE AEP,IAL PHdICGRA[~TRIC MONUh'u'r~IT SURVEYS FAIL TO
hfEEI' THE STIPULATt,D ACCURACY CRITERIA, WF.CC SHALL UTILIZE TRADITIONAL
FIFS,D SURVEY TECHNIQUL..s 'Ib ESTABLISH THE REASONS FOR LACK OF
CORRELATION. IF THE RESULTS CANNOT BE CORRELATED, WECC SHALL RESUME
TPADITIONAL FIELD SURVEY MONUMENT h]ONITORING, IN COhPLIANCE WITH THE
ACCURACY CRIT`..RIA AND STAhIDAF2DS CONTAINED WITH STIPULATION NO. 18.
~.Stioulation No 23 ,~
.~ \~
TAE DIVISION DIRECTS WBCC TO SLBAIIT RE~'ORTS OF ITS SUBSIDENCE
NANITORING PROGRPM ON ASEMI-ANNUAL B?15IS, COt~i+s.NCING OLvB MONTH AFTER
THE INSTALLATION AND INITIAL SURVEYING OF THE SUBSIDENCE MONUNEDITS.
F'GRTFIER, DUE 'Ib THE ~hL~LF..}' {ITY OF THE PERMIT AREA, GEOLOGY, PRESENCE OF
LANDSLIDES AND ST"rFp SLOPES, AND SENSITIVE HYD1mI~IC FrFMPNmS, WECC IS
DIRECTED TO SUBMIT A PROFOSED SUBSIDENCE MONI~RING REPORT FORMAT TC
THE DIVISION FOR APPROVAL. THIS RER~RT FORMAT SHOULD RECOGNIZE THE
IhtFORTANCE OF ~NTINUAL UPDATE OF SUBSIDENCE DATA INTERPRETATION,
MONITORING OF GROUND WATER LEVELS AND SPRING FLOWS, MONI'IC)RING OF MINE
INF'L,OW, AND SUBSURFACE GROUND ~NDITIONS WHICH ~ULD BE CORRELATED TO
SUBSIDENCE PREDICTION. THIS RE)~RT FORMAT SHALL BE APPROVED BY THE
DIVISION PRIOR TO THE COhP'IENCII4ENT OF EXTRACTION OF COAL WITHIN THE
SUBSIDE[~E TEST PANEL DESIGNATED IN APPENDIX A TO WECC'S NOVEhSBER, 1964
PERMIT REVISION APPLICATION (PANEL 1W-15).