|
• •
<br /> Kennedy/Jenks Consultants
<br /> induced [HI]) should be stated. For example, "NF @90.8', 25 deg to axis, 0.1" wide, minor
<br /> calcite."
<br /> • Coarse-Grained Rock Description
<br /> • Textural Classification.
<br /> • Color. Rock color is named and coded using the Geological Society of America rock color
<br /> chart. The code should be in parentheses immediately following the written description.
<br /> Presence of mottling and banding also is recorded. For example, "gry olive grn (5GY,
<br /> 3/2)."Hardness. Very hard, hard, medium, soft, very soft.
<br /> • Moisture Content. Dry, damp, moist, and wet (saturated).
<br /> • Size Distribution. Approximate percentage of gravel, sand, and fines (silt and clay).
<br /> • Grain Shape. Angular, subangular, subrounded, rounded, or well-rounded, for grains larger
<br /> than sand size.
<br /> • Grain Size. The largest cross-sectional dimension measured in tenths of an inch for grains
<br /> larger than sand size.
<br /> • Miscellaneous. Odor, contact and/or bedding dip, cementation, bedding, inclusions,
<br /> secondary mineralization, fossils, structures, formation name, and fractures.
<br /> • Fractures are identified by depth, angle, width, and associated mineralization, if applicable.
<br /> The interpretation of the fracture type (i.e., as natural [N], coring induced [CI], or handling
<br /> induced [HI]), should be stated. For example, "NF @126.1', 35 deg to axis, 0.1" wide, minor
<br /> calcite."
<br /> B.6 Other Logging Parameters
<br /> Standard Penetration Tests
<br /> This method generally follows ASTM D1586-08A Standard Test Method for Standard Penetration
<br /> Test(SPT) and Split-Barrel Sampling of Soils. This method provides a means of assigning a
<br /> relative density to the soil by counting the number of hammer blows (blow counts) required to
<br /> advance a split-barrel sampler a specified distance into the undisturbed soil ahead of the lead
<br /> auger. This method is not applicable to boreholes advanced with direct-push sampling equipment. It
<br /> is used primarily in conjunction with hollow stem auger drilling apparatus as the test can be
<br /> performed through the auger string without removal of the augers thereby allowing the borehole to
<br /> remain open to the bottom of the drill string without risk of caving. As the sampler is advanced by
<br /> the repeated drop of a hammer of known weight, the blow counts are recorded on the log and used
<br /> to provide a relative density descriptor to the soil penetrated during the test.
<br /> The number of blows required to drive the sampler 6 in. by a 140-Ib hammer falling 30 in. Fifty blow
<br /> counts per 6-in drive is considered "refusal," and sampling at this depth is usually terminated. In
<br /> addition, a total of 100 blow counts per 18-in. drive, or no observed advance of the sampler during
<br /> ten successive hammer blows, is also considered "refusal." During coring, leave this section blank.
<br /> Normally, the second and third 6-in. intervals are recorded and added as the number of blows per
<br /> feet.
<br /> Monitoring Well Installation Work Plan, B-8
<br /> Barrel Ten Quarter Circle Land Company, Escalon, California
<br /> \\SFO\Groups\I S-Group\Admi n\J ob\03\0301 18.27_BTQ C LC\09-Reports\MSN-I nstall-VVPln\Appendi x\APP_B.doc
<br />
|