Laserfiche WebLink
LOG . BOREHOLE 850-DIU1 `12 <br /> Geologic Logging - J. Copland, SA I C, Pleasanton) CA Ground Water . Water not was encountered. <br /> Borehole Location Approximately 17 Feet southeast or tank Sampling Methods : 2- inch I . D . split-barrel sampler advanced by <br /> excavation 0850-D1U1, Building 850 Area, Site 300 a 190-pound weight Fa I I i ng 30 inches . <br /> Coordinates (Cal Grid) N : 12G) 301 . 0) E 1, 695, 785. 8 Arrows show !ocat i ons or sampling . <br /> Elevation (ground) 1331 . 98 Feet Analytical Notes Benzene, ethy I benzene, to I uene, and xy I eves <br /> Dr i I I i ng P. Baker, P . C . Exploration) Inc . ) Roseville, CA were not i dent i P i ed ; i n so i I or rock samples From 10, 20, <br /> Dates Dr i I l ed : 9/27 to 9/28/90 and 30 Feet above a detect i on 11 m i t or 0 . 0005 m9/k 9 . <br /> Dr i I l i ng Method . 6 : 25- inch ho I ! ow stem auger, 0-31 Feet Recovery histograms show percent recovery and i nPerred recovery locations . <br /> BackP i I I ed with grout, 3-31 Peet; bentonite 0 . 5-3 Feet Est i mates or grave I s, sands, and F i nes are P i e I d v i sua I est i mates . <br /> TPH SITE <br /> Core as Analytical soil samples 300 <br /> Depth recovery OVA diesel <br /> O 0 100 Blows (ppm) (mg/kg) VL i tho l ogy L i tho l og i s descriptions and/or remarks <br /> (0-0.5) GRAVEL [GP] baserock For road; Pill ' <br /> —— (0.5-10.5) QUATERNARY COLLUVIAL SEDIMENTS <br /> 5 11/13/16 3 ? <2 (0.5-10.5) CLAYEY SILT, [ML], brown, very stiPP, dry, moderate estimated <br /> ®_ permeability <br /> l� W 3 / _ " (10.5-30.7) TERTIARY SEDIMENTARY ROCKS <br /> 8 50 1 0 <10 ® ® ® (10.5-13) SILTY SANDSTONE, grayish brown, moderately indurated, Pine <br /> ? grained, minor Mn-oxide stains, rare red grains, some carbonate coatings <br /> 15 50=3" 0 <2 on Fractures <br /> (13-20.2) SANDSTONE, dark brown, s 1 i ht I y damp, well indurated Pine to <br /> medium grained, well sorted, abundan quartz and maPic grains, low <br /> Z� 60=5" 0 <10 =_®_®®_ estimated permeab i I i ty <br /> 2 (20.2-23) SI LTSTONE, brown, we I 1 i ndurated, I ow est i mated permeab 111 ty <br /> 25 W 56=6" _=® (23-28) SANDY SILTSTONE, I i ght brown to brown, we I 1 i ndurated <br /> 30 _ W (28-30.7) SANDSTONE brown Pine grained rare red and maPic grains, low <br /> 25/50=3" 0 <2 estimated permeab i I'i ty ' <br /> D-2 <br />