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Holes drilled by Palos Verdes Properties 1968 - 1969 • • • . . Appendix B: Summary of Bore-Hole Information, Portuguese Bend Landslide, for the Period 1956-1969 All elevations are given in feet above mean sea level . Surface elevation values are representative of the ground surface at the time the respective holep were drilled. Coordinate values are given in the Palos Verdes Properties coordinate system. A. Holes drilled by Palos Verdes Properties 1968-1969 Hole No . Coordinates Surface Slip Surface Water Level Portuguese Tuff North West Elevation Elevation Elevation Top—Elev. gall—Elev. P.V.P. No. 1 5776 30,228 207 111 114 - -7 P.V.P. No. 2 5791 29,129 228 63 133 - - P.V.P. No. 3 6343 28,546 279 160 197 131 8o P.V.P. No. 4 6629 29,872 . 389 88* - 63 1 P.V.P. No. , 5 7372 29,093 383 330 305 - - P.v. P. No. 6 7205 28,362 395 226 313 178 126 P.V.P. No. 7 8392 28,702 493 408* 338 4o4 337 P.V.P. No. 8 7804 29,881 356 151* 3044 14o 77 P.V. P. No. 9 6938 27,609 353 226 256 193 • 134 P.V. P. No. 10 8968 28,595 6.58. - - Eroded 6o6 P.V.P. No. 11 4741 28,601 23 -10 0 -11 -66 P.V.P. No. 12 4659 29,530. 21 -34 0 - -45 * Denotes currently inactive slip surface . , ' Hole P.V.P. No. 10 was drilled in bedrock north of active slide .