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Holes drilled 1956 - 1957 • B. Holes drilled by Palos Verdes Properties 1956-1957 Hole No . Coordinates Surface Slip Surface Water Level Portuguese Tuff North West Elevation Elevation Elevation Top Ele,v. Base Elev . A & 2 4970 28,161 61 12 - -11 -76 B 4565 28,079 10 - 0 - c & 9 4420 27,712 22 -20 -3(? ) -33 - D 4790 28,170 ' 60 6 0 - - E 5190 28,400 136 - - - - F • 5190 28,410 135 - - - - C & 7 4902 28,695 37 -55 - - - H 4885 28,847 3o - io - - I 5450 28,630 185 - - - - J & It 6849 28,269 337 21st 207 178 101 K 5947 27,458 205 57 -10(? ) - - L 6830 28,550 330 - - • - M 6450 . 28,930 310 ' - - - - N 6080 28,90 254 . - ' - - - O 7877 28,601 426.1 345 • 334 - - P 7727 28,210 423 331 300 - - Q 7509 27,663 394 338 - 302 221 • R 7513 27,365 437 - - - s 6513 27,528 2?7 204 ' . 37 172 101 T & JJ 7362 27,985 318 - 291 _ - ✓ 7068 27,430 349 2148 233 - - . ✓ 7008 27,964 355 239 255 - - III S • B. Holes drilled by Palos Verdes Properties 1956-1957(continued ) Hole No. Coordinates Surface Slip Surface Water Level Portuguese Tuff North West ' Elevation Elevation Elevation Top Elev. Base Elev. w 6400 27,205 256 203 21 - 117 X 5825 28,026 207 65 �5 34 -38 Y 6399 28,057 , 288 178 - 143 76 z 51127 27, 388 190 12 30 - - AA 6183 27,258 218 132 20 97 35 BB 6274 28,337 280 163 52 1014 40 cc 6735 27,933 315 217 514 18o 110 DD 5418 28,076 189 45 -31(x ) 20 -40 EE 7583 28,663 ;. 412 : . 299 315 - . - FP 6062 28,485 255 135 37 75 -3 as 5080 27,779 168. 2 -7(? ) _ - MI 4060 27,080 18 _ - _ _ II 8260 28, 660 473 _ - _ _ KK 5610 28, 173 220 57 . 67 - - LL 5706 27,443 192 3 - - -93 1 5500 27, 510 213 - - - - 3 4660 29,64o 15 -15 0 - - 5 51110 28,728 187 711 , _ i _ _ 6 4950 28,950 21 - - . - - 8 7368 28,375 412 - 304 - _ C . Holes drilled by Donald R. Warren Company, 1957 Hole No . Coordinates Surface Slip Surface Water Level Portuguese Tuff North West Elevaticn Elevation Elevation Top Eley. Base Elev. D.W. 1 4957 29,800 154 - 91 D.W. 2 7866 28, 510 , 425. 325 326 . D.W. 3 6266 29,022 272 147 - D.W. 4 4795 28,740 32 10 1 D.W. 5 5890 28, 742 226 <100 137 D.W. 6 6535 27, 312 • 257 205 - D.W. 7 5153 29,330 116 56 47 D.W. 8 113511 28,020 2 <211 0 D.W. 9 41155 28,0115 9 (-10 11 D.W. 10 4525 27,950 9 -14 5 D.W. 11 • 41140 27,750 19 -16 -13(? ) D.W. 12 4330 27,708 14 . <- 9 2 • D.W. 13 4610 27, 625 42 10 12 D. Holes drilled by Mackintosh & Mackintosh for installation of caissons, 19.57 C-1 4947 28,179 62 10 C-2 11953 28,192 62 11 C-3 11934 28, 160 63 10 . C-4 4928 28,148 63 10 III • • S S ' Ill D. Holes drilled by Mackintosh & Mackintosh for installationof caissons, 1957, (continued) Hole No. Coordinates Surface Slip Surface Water Level Portuguese Tuff North West Elevation Elevation Elevation Top Elev. Base Elev. 0-9 4932 29,057 20 -27 C-10 4930 29,045 20 -27 C_11 4920 28,620 38 22 c •12 4921 26, 605 38 21 Note : Holes C-5 through C-8 were abandoned before completion of drilling. E. Holes drilled by Los Angeles County for installation of caissons, 1957 A-A 4875 27,663 83 35 • A-1. 4875 27,683 83 33 • A-2 4875 27,703 83 32 B-A 4876 27,9i4 68" 7 B-1 4881 27,934 68 7 B-2 4887 27,953 68 7 D-A 4979 28,432 69 29 D-1 4985 28,454 69 29 ' . • D-2 4994 28,475 69 29 • • E. Holes drilled by Los Angeles County for installation of caissons, 1957 . (continued) Hole No. Coordinates Surface Slip Surface eWater Leveltion TopPrugv.Portuguese T fGlev . North West 'Elevation Elevation E-3 4935 28,537 43 22 • E-4 1935 28, 563 43 22 F-1 5069 28,643 , 86 63(? ) F-2 5073 28,665 . 86 63(? ) I-1 5448 29,228 196 91 K-1 5110 30, 340 192 81 411 411 111