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Appendix D Direct Push Boring Investigation Phase It ESA Multi-Modal Station"Six-Block Project' January 6,2003 Page 7 of 15 collected from between five and 15 feet bgs, consequently, continuous soil cores were collected between 15 feet and 35 feet bgs A strong petroleum hydrocarbon odor was noted in soil samples from approximately five feet bgs to 45 feet bgs Corresponding PID readings ranged from 610 to 3,800 ppm The boring log for DBK4-730-10 is included in the back of Appendix D ■ The organic vapor concentrations measured for all screened samples collected between 14 5 feet and 34 5 feet bgs ranged between 3,200 ppm and 3,800 ppm These recorded measurements were displayed briefly by the PID before the instrument measuring capabilities were exceeded ■ Dunng groundwater elevation measuring activities, a petroleum sheen and a strong petroleum odor were noted on the depth-to-water probe A petroleum sheen was also noted in the groundwater samples collected from this boring 3 3.6 Block 5 Between May 30 and September 16, 2002, 17 Geoprobe borings and 12 detection borings were installed on eight parcels of Block 5 Geoprobe, detection, and hydropunch boring locations for Block 5 is presented in Figure 10,Appendix A ➢ Two detection borings (DBK5-820-1 and DBK5-820-2) were installed at 820 E Channel Street, an equipment storage yard The number of bonngs was limited due to obstructions at the property Not all potential areas of concern could be investigated ■ Detection borings DBK5-820-1 and DBK5-820-2 were advanced using a Geoprobe 5400/5410 drill rig with four-foot rods These bonngs were thus advanced to a depth of 44 feet bgs instead of 45 feet bgs Detection boring DBK5-820-2 met refusal at a depth of 28 feet bgs with the sampling tip closed The sampling tip was opened at this depth and continuous soil cores were collected from between 28 and 44 feet ➢ One Geoprobe boring (GBK5-836-1) was installed in the driveway of 836 E Channel Street, a residence ➢ One Geoprobe boring(GBK5-147-1)was installed at 147 N Aurora Street, a store and apartment building ➢ Two Geoprobe borings (GBK5-805-1 and GBK5-805-2) and two detection bonngs (DBK5-805-1 and DBK5-805-2) were installed in the parking area at 805 E Weber Avenue, a used car lot The boring log for DBK5-805-1 is included in the back of Appendix D ➢ Five Geoprobe borings (GBK5-811-1 through GBK5-811-5) and three detection borings (DBK5- 811-1 through DBK5-811-3) were installed inside the building at 811 E Weber Avenue, currently an auto repair shop and towing business ■ Geoprobe borings GBK5-811-3 and GBK5-811-5 were advanced to a depth of 16 feet bgs using a Geoprobe 5400 drill rig with four-foot rods ■ While advancing Geoprobe boring GBK5-811-4, a void was encountered from two to eight feet bgs and consequently,no soil samples were collected and the boring was ternimated ➢ Three Geoprobe borings (GBK5-815-1 through GBK5-815-3) were installed inside the building at 815 E Weber Avenue, an auto repair shop ➢ Three Geoprobe bonngs (GBK5-829-1 through GBK5-829-3) and three detection bonngs (DBK5-829-1 through DBK5-829-3) were installed inside the building at 829 E Weber Avenue, an auto body repair shop '0