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Boring Number, B-1 HORIZON ENVIRONMENTAL INC <br /> Job Number 1641 12 — <br /> Site Location Beacon #641, Stockton, CA <br /> Drilling Company Mitchell Drilling Environmental Drilling Method 10—inch Hollow Stem Auger <br /> Drilled By Bart Sampling Method Split--Spoon Sampler <br /> Date Drilled 07/22/97 Total Depth 60 Feet <br />' Logged By G Barker Depth To Groundwater Not Encountered <br /> `u <br /> i = Q, 0 0 <br />' aid z 0 a Z Soil a= Well <br /> Comments <br /> o a u # m o=Description Fn a d Construction <br /> E m C0 <br /> rc V <br /> VW-3 VW-4 <br />' 31 29 16 14 2AM 31 dry.— rd <br /> L <br /> CLAY, brown moderate plasticity C <br /> to 50 Casing Installation Data <br /> 32 32— <br /> VW-3 do VW-4 <br /> 33 33 — 2—inch PVC <br /> Q 020—inch Screen <br /> 34 34 <br />' 31 — <br /> 37 18 1$ 2,500 35 <br /> H 44 <br /> 36 36- <br /> 37— 37- <br /> 38— 38- <br /> 39— 39 <br />! <br /> 40— <br /> 29 j 30 14 12 49 40 SILTY SAND very fine— to fine—grained SM <br /> 50 tan to green, dry very dense <br /> 41 41 <br /> 42 42 <br /> 43 43 <br /> 44 44 <br /> �n <br /> 45 27 <br /> 28 18 is 200so <br /> 45 <br /> 46 46 <br /> 47 47 <br /> 48 48 <br />' 49 49 <br /> 50— '{' 30 32 18 18 115 5o SAND, fine— to medium—grained, tan SP <br /> in 32 and green, dry, very dense <br /> 51 51 <br />' 52 52- <br /> 53— 5.3- <br /> 54— <br /> 354 54 <br /> 55 , 29 55 CLAY, with fine— to medium—grained <br /> 1 328 5 18 18 3$ sand stringers, brown, very mrnst. CL <br /> 56 In56 hard <br /> 57 57- <br /> 515— 58 <br /> 59 28 59 SILTY SAND. very fine—grained, ton to SM <br /> 28 greenish, dry, very dense <br /> so � 30 16 18 10160 <br /> Total depth - 60 feet bga <br /> Page 2 Of 2 <br />