GENERAL33082

• Permit No: C1980004
• IBM Index Class Name: General Documents
• Doc Date: 3/4/1982
• Doc Name: PROPOSED DECISION AND FINDINGS OF COMPLIANCE
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

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VI. Hydrologic Balance: Ground ldater - kules 2.0:.5 2.04.7, 2.OS.b(3),
and 4.05.
Information proeided by the applicant with respect to ground water in the
perv:it area can be found in Sections 5.2.2 through 4.2.5 in Volume I of the
application. based on an analysis of these data the following deteminations
have been made by the Division.
Drilling in the area indicates the presence of a saturated zone within the
Cameo seam (see Figure 4.2-3, Volume III. This saturated zone occurs outside
of the permit area and will not be encountered b} projected mine workings
during this permit tern.
She zone of saturation in the Cameo seam is recharged at the point were the
Cameo seam sub crops below the Salt Creek alluvium appr w:imatel}• two miles
upstream of the mine. Ver}' li*_tle recharge of the coal seams and sandstones
occur along outcrops due to the ven• low precipitation rate (S.S inches)
and due to the steep slopes which favor runoff ever infiltration.
The applicant has no monitoring we 11 completed in strata overlying or
c:ithin the zone of the underground mine workings. This is because of
the inaccessibility of the steep terrain to truck mounted drill rigs.
Previous holes drilled in the area of the portals have been dre to a depth
in excess of 200 feet below the Cameo seam and its associated roof and
floor strata are not saturated in the area of the mine. The mine zone is
not a recharge area for these strate.
The mine workings are situated within a geologic structure identified as
a graben. This graben is bounded on both sides by faults. Ifining of the
coal is not possible beyond the faults because of the displacement of the
teal seams.
One set of entries has encounterec the
At the time the fault was encountered,
fault was eventually dewatered and all
within the mine workings. The amount
with the mining operation.
fault on the south side ci the graben.
water flowed into the mine. The
of the water produced was contained
of water experienced did not interfere
The fault will be encountered by the mine at a future time and will nroba~i;
produce water again. There is also a slight chance that the predicted
ground water zone of saturation will be encountered during this pencit term.
In order to monitor the effect of the operation. on ground water resources
and to assist in the prediction of hydrologic ir:.pacts of future permit terms,
the following stipulation is reouired:
4. TY,E PER1•fITTEE ?TUBS SUFiMIT TO TEE DIVISIO;c A?; =:A'NL~AL REPORT ~lARACTERIZING
T&E INFLOI+'S, DISCHARGES AND THE COI:SL~"fPTIOi~ CF SdATER i~:ITHIN IHE IiI?:E.
THIS REPORT IS TO I?:CLUDE A "TINE 120RKINGS "iA_r SHOS•.'ING THE LOCP.TI01•:
AND QUANTITF OF INFLO[,'S; A TABLE 1:E]ED TO THE MINE ?lAP IdHICH SHALL
CONTAIN THE SOURCE (i.e. FAULT. FF,ACTllRES, ETC.), OUANTITI'. DI7RATIOS, AND
OllALITY (i.e. pH, ELECTRU-CONDUCTI~'ITT .9IdD SEMPERATUREj OF ALL NON-SEEP
INFLOWS; A SABLE CONTAINING RECORDS OF MATEY DISCHARGED FROI.1 THE 'riINE,
CONSLTIED I12 THE ?]INE AND I?]PORTED FOR L'SE ~?ITHIN THE ?TINE; A DISCDSSI01:
OF THE i.LSTEF BALANCE WITHIN THE ?SISE: AI•iD, A PROJECTI01 OF HYDROLOGIC
I?1PACTS OF ?]WING IN THE L'~PCO*iIP:G ~iEAR.