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SPU �Pp � a m N I /BZ8 I • AZZINM property north of Grant Line Road,where the pipeline alignment had previously been identified. Test pits were then excavated across the anticipated alignment location. In certain locations (Test Pits 2, 3, and 7) the pipelines were identified in their anticipated location,though in Test Pit 7, they appeared to trend more in a north south alignment than anticipated. Based on this revised alignment,Test Pits 8 through 13 were excavated, and the pipelines were encountered where expected. The pipelines were not found in Test Pits 1,4, 5, or 6. Test Pits 11, 13, 7, 9, and 8 were excavated near these locations based on information from test pits where the I pipelines were located. In all, Clayton excavated 13 test pits on the property. The locations of these test pits are shown in Figure 3. These test pits were typically approximately 30 feet long, 2 feet wide, and 4 feet deep. The pipelines were generally noted.to be at a depth of 2 to 4 feet, and were typically 2 to 3 feet apart. Overall, the pipelines appeared to be in tact and in good condition,with the exception of in Test Pit 9,where hydrocarbon staining and odor were observed. The former pipelines were tapped in two locations to determine whether,any liquid was remaining in them. The pipelines did not appear to contain liquid. The visually impacted excavated soil was stockpiled on plastic sheeting and sampled for disposal, and clean soil from an on-site stockpile was used to backfill the pit. The impacted soil was transported to an appropriate facility on June 3, 2005. 6.0 SOIL BORING INVESTIGATION I6.1 INITIAL SOIL BORING INSTALLATION The soil borings at the site were advanced using direct push GeoProbe rig with continuous macro core sampling. Soil cores were retained in 2-inch diameter acetate liners, examined for soil I properties including relative moisture content, competency, and other observable distinguishing I characteristics, and described on field boring logs in general conformance with the Unified Soil Classification System. Soil boring logs are presented in Appendix A. Clayton evaluated field observations and notations of odor to select the specific samples that were submitted for laboratory analysis. Soil samples retained for laboratory analysis were cut from the acetate liners, capped with Teflon tape and plastic end caps, and placed in a pre-chilled cooler for transportation to the laboratory under formal chain-of-custody documentation. I Soil borings were advanced to a depth of 6 feet, and a sample collected at that depth. If no evidence of hydrocarbons was observed in the boring, the boring was terminated. If evidence of hydrocarbons (visual or olfactory)was observed, the boring was extended vertically to I groundwater, and additional soil samples collected to provide information on the vertical distribution of hydrocarbons in soil. I Groundwater samples were collected from borings where field evidence of hydrocarbon impact was observed, to determine whether groundwater had also been impacted. These borings were advanced to below the water table and developed into temporary well points for collecting grab groundwater samples. Once the total depth was achieved, a temporary one-inch outer diameter PVC casing was placed into the open borehole. The lower five feet of casing was 0.10- 3 S-%11S\PROIBCTSk2WM3719 Shc11 Mountain Hmu \Neigh b,c,d\Ncighb B\Ncgh B Repon\B summary repon.doc