ML18192B849
| ML18192B849 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/17/1975 |
| From: | Arizona Public Service Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18192B849 (1) | |
Text
BACKHOE TRENCH PV-BH-20A South Wall N60oE GRAVELLY SURFACE DEBRIS AND WEATHEREO BEDROCK -
LT GRAY-BROWN LOOSE CLASTS ANGULAR TO SUBANGULAR NATURAL GROUND SURFACE ANO DEBRIS DISTURBED BY EXTENSIVE EQUIPMENT FEET ACTIVITY I
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.'o 0' ch'(hnIT cT REA III UsED 12 10 UPPER TRENCH AREA HIGHLY OISTURBEO BY EQUIPMENT OPERATION VERY SILTY PEBBLY SAND PROBABLY CROATAVINA OPEN BURROUGHS OBSERVED I
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Oh DATUM SHEAR BRECCIA HIGHLY-
'ALTEREO VOLCANICS, EXTEN-SIVELY FRACTURED N64 W
66'SW
~ CONTACT SHEAR BASALT LT GRAY TO GRAY PROPHYRI-
- TIC, HIGHLY JOINTED, MODERATELY FRAC-
- TURED, CALICHE COATING ANO CALCITE FILLINGS DATUM BASALT REO-BROWN PORPHYRITIC IN-PLACE ALTERA710N OF PHENOCRYSTS To GREEN (SAUSSURITIZATION) AND REO-BROWN HIGHLY JOINTED FRACTURED NUMEROUS CALICHE STRINGERS, CALCITE AND CALICHE COATINGS ON FRACTURE
- SURFACES, FRACTURES TIGHT AND UN-FILLED IN TRENCH BOTTOM FAULT A SHEARS CONVERGIHB TOWARD BOTTOM OF TRENCH N55 -63 W
67 NE DATUM FAULT SOFT ALTERED BLUE-GRAY VQLCANICS SHEAR N50'W 76 SW N55oW VERT WHITE ALTERED GOUGE MATERIAL CONTACT
nn'i H'I DATUM FLOOR OF TRENCH AREA QF EXTENSIVE ALTERATION ANI} NUMEROUS SHEAR-LIKE SURFACES LT.
- GRAY, BROWN, RED-BROWN, GREENISH-GRAY, HIGHLY FRACTURED, ABUNDANT CALICHE N60 W
VERT (FLOOR)
OXIDIZED ZONE h
ohio BASAL'I DARK GRAY TO LOCALLY RED-
- BROWN, BRECCIATED, HIGHLY FRACTURED, CALICHE, CALCITE AND IRON OXIDE CDATINGS OF FRACTURED
- SURFACES, ALTERED PHENOCRYS73 BASALT DARK RED-BROWN HIGHLY ALTEREO EXTENSIVELY FRACTURED HIGHLY OXIDIZED ZONE CHANGE N55 6
75'SW (FLOOR)
WHITE ALTERED GOUGE MATERIAL-PINCHES OUT NEAR TIIENCH
- BOTTOM, SHEARED, SOFT, " CI.AY-LIKE",
ABRUPT CONTACT WITH OXIDIZED VOLCANICS ON
- WEST, IRREGULAR, GRADATIONAL CON-TACT WITH BLUE GRAI VOLCANICS Date of Excavation 9-26-76 LOG OF TRENCH PV-BH-20A November 17, 1975 Amendment 14