Laserfiche WebLink
Whetstone <br />Associates4 Technical Memorandum <br />and report permeability in lugeons and the Grouting Intensity Number (GIN). The GIN is calculated <br />according to the methods of Deere Lombardi (1993): <br />where: <br />GIN =p * V <br />GIN = constant, specific energy <br />P = pressure (psi) <br />V = grout volume (ft3)/length of stage (ft) <br />The iGroutTM reports for each hole and grouting interval are provided in Attachment 2. The refusal <br />criterion for this project was based on lugeon values reported from the iGroutTM data, with closure <br />confirmation by the GIN method. A GIN of >120 typically indicated closure. The GIN values are <br />provided graphically in Attachment 2. <br />3. RESULTS <br />3.1 Drilling <br />The grout holes were collared in unconsolidated fill material with PVC collars and drilled vertically <br />at least 40 feet into bedrock. Table 2 lists the depths and dates of drilling. <br />Table 2. Depths and Dates of Boreholes Drilled During Schwartzwalder Grouting <br />Program <br />4109C.150730 5 <br />Collar <br />Borehole <br />Length of <br />Stick <br />Depth to <br />PVC <br />Total Depth <br />Borehole <br />Installation <br />Completion <br />C(l r <br />Up <br />Bedrock <br />(ft btoc) <br />Date <br />Date <br />(ft ags) <br />(ft bgs) <br />F1 <br />6/3/2015 <br />6/5/2015 <br />7.76 <br />0.55 <br />7.21 <br />46.49 <br />S1 <br />6/4/2015 <br />6/22/2015 <br />9.35 <br />0.53 <br />8.82 <br />52.49 <br />F2 <br />6/4/2015 <br />6/15/2015 <br />8.77 <br />0.34 <br />8.43 <br />51.49 <br />S2 <br />6/4/2015 <br />6/22/2015 <br />7.93 <br />0.54 <br />7.39 <br />51.87 <br />F3 <br />6/4/2015 <br />6/6/2015 <br />8.16 <br />0.47 <br />7.69 <br />49.77 <br />F313 <br />6/15/2015 <br />6/16/2015 <br />9.14 <br />0.40 <br />8.74 <br />49.92 <br />S3 <br />6/4/2015 <br />6/22/2015 <br />7.60 <br />0.55 <br />7.05 <br />52.56 <br />F4 <br />6/4/2015 <br />6/15/2015 <br />7.04 <br />0.48 <br />6.56 <br />51.46 <br />S4 <br />6/4/2015 <br />6/22/2015 <br />5.67 <br />0.57 <br />5.10 <br />56.25 <br />F5 <br />6/5/2015 <br />6/6/2015 <br />7.56 <br />0.14 <br />7.42 <br />50.65 <br />S5 <br />6/5/2015 <br />6/22/2015 <br />8.08 <br />0.22 <br />7.86 <br />57.15 <br />F6 <br />6/5/2015 <br />6/15/2015 <br />8.01 <br />0.26 <br />7.75 <br />50.97 <br />S6 <br />6/5/2015 <br />6/22/2015 <br />7.72 <br />0.22 <br />7.50 <br />47.15 <br />F7 <br />6/5/2015 <br />6/12/2015 <br />7.80 <br />0.27 <br />7.53 <br />49.11 <br />S7 <br />6/5/2015 <br />6/19/2015 <br />7.27 <br />0.22 <br />7.05 <br />51.65 <br />F8 <br />6/6/2015 <br />6/15/2015 <br />10.00 <br />0.42 <br />9.58 <br />51.80 <br />S8 <br />6/6/2015 <br />6/19/2015 <br />10.00 <br />0.49 <br />9.51 <br />53.63 <br />F9 <br />6/6/2015 <br />6/12/2015 <br />15.29 <br />0.20 <br />15.09 <br />57.59 <br />S9 <br />6/8/2015 <br />6/19/2015 <br />10.00 <br />0.56 <br />9.44 <br />52.01 <br />4109C.150730 5 <br />