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Ms. Laurie Anderson, P.E. July 18, 200 I Page 3 Boring No. Station Depth, ft General Comments LSl Ctr. of Well 45 Lift Station No. 1 LS2 Ctr. of Well 35 Lift Station No.2 FMl 11 +00 13 18" Force Main FM2 21+00 13 18" Force Main FM3 28+75 19 South of Wonderworld Drive FM4 31+00 24 North of Wonderworld Drive FM5 41+00 12 18" Force Main Gl 7+50 19 24" Gravity Line G2 14+20 20 West of SH 123 G3 18+00 20 North of De Zavala Drive G4 28+00 20 24" Gravity Line 05 38+00 20 West of FM 621 06 48+00 17 24" Gravity Line G7 58+00 14 24" Gravity Line The field drilling will consist of 640 feet and a total of 35 borings ranging in depth from 13 feet to 45 feet. Each line boring is scheduled 5 feet below the bottom of the invert and the borings located at the roadway crossings will be drilled 10 feet below the invert elevation. At each lift station, the boring depth will be extended 15 feet below the bottom of the wet well floor slab. Mr. Ben Philips, our drilling superintendent, has visited the project alignment and lift station locations with Mr. David Bissett in order to identify any major obstructions and/or obstacles to inhibit the field investigation. Based on present conditions, each proposed boring location is accessible to our truck-mounted drilling equipment and support vehicles. We plan to recover intact push-tube samples of cohesive soils for laboratory testing and analysis. Standard Penetration Tests will be conducted where granular soils are encountered. In the deeper borings at the lift station locations, it is likely shale will be observed. The shale will be continuously cored using NX-sized core barrel. While advancing the borings using dry drilling techniques, each boring will be observed for groundwater infiltration. Upon completion, each boring will be plugged using bentonite pellets. All recovered samples will be properly labeled, wrapped and sealed. All samples will be returned to our Austin laboratory where they will be reviewed and logged. At this time, representative samples will be selected for testing. As requested by FNI, a 2-inch diameter PVC monitoring well will be constructed at each lift station location. Each monitor well will be drilled to a depth of 35 feet. The bottom lO-feet will be screened, with a sand backfill of at least 20 feet from the base of the well. The PVC will be extended a couple of feet above the ground surface, and then covered with a metal, locking cover. A small concrete pad will be constructed at the ground surface as required by the TNRCC. Water levels will be collected and reported on a monthly basis for four months, as requested. 61YPG365Yl131P153 Copyrighl2001 Kleinfelder. Inc. 3601 Manor Road . Austin. Texas 78723 . (512) 926-6650 . (512) 926-3312 fax