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Table 3 Table 3 -- Shasta Dam Borehole Geophysical Logging Requirements Rev. 2020-Feb-02
| | | | | | | | | | | | | | GEOPHYSICAL LOGGING | |
| Trip | Item | Field Exploration Request (FER) | Drill Hole | Location | Gallery Elevation (floor) | Gallery | | | | | | | | |
| Block No. | Angle | | | | | | | | | | | | | | |
| from Vertical | Drilled | | | | | | | | | | | | | | |
| Depth | Nominal Borehole Diameter | Concrete Interval | Bedrock Interval | Casing Interval | Interval | Nominal Dilatometer Depths | OBI & ABI | | | | | | | | |
| Televiewers | Caliper | Full Wave Sonic | Borehole Deviation | Remarks | Notes | | | | | | | | | | |
| | | | | | | | | (ft.) | | (ft.) | (ft.) | (ft.) | (ft.) | (ft.) |
| A | 1 | Geotechnical | DH-20-304 | crest - Left Wing Dam | -- | -- | 0 | 100 | NQ | | | | | |
| 76 mm / 3 in | none | 25 - 100 | 0 - 30 | 30 -100 | 35, 50, 65, 80 | | | | | | | | | | |
| [1] | X | X | X | X | Requires NQ hole centralizers | [1] Final dilatometer test depths will be chosen on site after examination of televiewer logs. 20MP's minimim dilatometer performane rating. | | | | | | | | | |
| B | 4 | Geotechnical | DH-19-307 | crest - Right Abutment | -- | -- | 0 | 150 | NQ |
| 76 mm / 3 in | 0 - 1 | | | | | | | | | |
| (asphalt & fill) | 1 - 150 | 0 - 30 | 30 - 150 | 35, 50, 75, 96 | | | | | | |
| [1] | X | X | X | X | Requires NQ hole centralizers | [1] Final dilatometer test depths will be chosen on site after examination of televiewer logs. 20MP's minimim dilatometer performane rating | | | | |
| C | 5 | Geotechnical | ADH-20-302 | crest - Right Abutment | -- | -- | 15 | 150 | NQ |
| 76 mm / 3 in | 0 - 2 | 2 -150 | 0 - 5 | 5 -150 | 30, 50, 75, 96 | | | | | |
| [1] | X | X | -- | X | Requires NQ hole centralizers | [1] Final dilatometer test depths will be chosen on site after examination of televiewer logs. 20MP's minimim dilatometer performane rating | | | | |
| D | 13 | Concrete | DH-18-19 | gallery - Main Dam - left section | 880 | 17 | 0 | 18.3 | 153 mm / 6 in | 0 - 15 | 15 - 18.3 | -- | 0 - 18.3 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 14 | Concrete | DH-18-20 | gallery - Main Dam - left section | 750 | 27 | 0 | 20.5 | 153 mm / 6 in | 0 - 17.8 | 17.8 - 20.5 | -- | 0 - 20.5 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 15 | Concrete | DH-18-21 | gallery - Main Dam - left section | 650 | 34 | 0 | 28.9 | 153 mm / 6 in | 0 - 23.3 | 23.3 - 28.9 | -- | 0 - 28.9 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 16 | Concrete | DH-18-22 | gallery - Main Dam - right section | 725 | 50 | 0 | 19.4 | 153 mm / 6 in | 0 - 16.3 | 16.3 - 19.4 | -- | 0 - 19.4 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 17 | Concrete | DH-18-23 | gallery - Main Dam - right section | 750 | 64 | 0 | 31.8 | 153 mm / 6 in | 0 - 28.2 | 28.2 - 31.8 | -- | 0 - 31.8 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 18 | Concrete | DH-18-24 | gallery - Main Dam - right section | 930 | 69 | 0 | 10.5 | 153 mm / 6 in | 0 - 6.3 | 6.3 - 10.5 | -- | 0 - 10.5 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 19 | Concrete | DH-18-28 | NOT DRILLED | | | | | | | | | | | | | | | |
| D | 20 | Concrete | DH-18-29A | gallery - Right Wing Dam | 1025 | 72 | 0 | 20.9 | 153 mm / 6 in | 0 - 14.2 | 14.2 - 20.9 | -- | 0 - 20.9 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |
| D | 21 | Concrete | DH-18-30 | gallery - Right Wing Dam | 1025 | 73 | 0 | 10.2 | 153 mm / 6 in | 0 - 3.8 | 3.8 - 10.2 | -- | 0 - 10.2 | -- | X | -- | -- | -- | Requires 6-inch hole centralizers |