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UNION PACIFIC RAILROAD COMPANY Las Vegas, Nevada Water W ell #8 Location: 290* South and 728* West o f Corner, Section 31, 20 - 6 l, • M. D. B. & M. E levation: 2126* (Cement Matt) Spudded: March 17, 1942 Completed: March 29, 1942 Total Depth - 766 Casing Record 13-3/8" - 48# - South Chester Tube C o.’ s, lapw eld, 8-V thread cemented at 510.57. Cemented with 388 sacks V ic to r M odified. Cement, none treated. 10-3/4" - 45.5# -• A. 0. Smith, Security Engineering C o.’ s flu sh joint lin e r , 283.81* long set with shoe at 760.50. Top at 4 7 6 . 6 9 . A l l o f lin e r perforated 18 rows. , 60 mesh, 2" s lo t s , 6" centers, Log From To Feet Cut Formation 0 24.55 24.55 Surface 24.55 27 2.45 Hard s h e ll 27 35 8 Sand and chalk 35 40 5 Chalk \.:H : / ?'1 40 50 10 White and pink limestone with few grains gravel 50 70 20 Limestone, clay and g rav el, 30% each Hard s h e lls 45' to 55* 70 90 20 Clay with l i t t l e limestone (no gravel) 90 100 10 Limestone and coarse gravel with small amount o f clay 100 I 30 30 Limestone with few grains o f gravel 130 140 10 Limestone 140 170 30 Clay and limestone, 70% clay 170 190 20 Limestone with small amount clay. 90% limestone 190 200 10 Clay and lim estone, 50% each 200 220 20 B u ff colored clay with fewr pieces o f limestone and grain s o f g ra v e l, (few hard s h e lls from 206 to 2l6) 220 230 10 Clay and limestone, 50% each. Few pebbles 230 240 10 B u ff colored clay , with few pieces o f limestone. 240 290 50 B u ff colored clay with small amount of g ra v e l. Percent o f clay increases from 60% at top to 100% at bottom.