Laserfiche WebLink
28 January 2004 �ki'io 0 <br /> AGE-NC Project No 97-0230 <br /> Page 6 of 8 <br /> .11 <br /> and P-12 but a much morexe tensive TPH-d/TPH-mo lateral extent that consists of soil bonngs P-2; <br /> P-3,(�=6,1 P-9 and P-12,the vertical extent of area no 2-Impacte, soil does not/appear to extend <br /> beyond 40 feet bsg Area no 3 appears to have a laterally-11 <br /> m;1PH-d/TPH-L <br /> e`d extent foTPH-g and MTBE- <br /> Impacted bound by soil boring P-4, but a much more extensiv lateral extent that <br /> consists of soil boring P-4 and tank removal soil samples'TK3,S�IpIn 3 d Piping 4, the vertical <br /> extent of area no 3-impacted soil does not appear to extend beyond 7 feetlbs Area No 4 appears <br /> to have a laterally-limited extent for MTBE-Impacted soil conslstmg�`o`T-fank-removal soil sample <br /> TK2-S, the vertical extent of Impacted soil in area no 4 does not appear to extend beyond 20 feet <br /> bsg The lateral extent of TPH-g/d/mo and MTBE-Impacted soil is depicted in Figures 5 through 7, <br /> the vertical extent is depicted in Figures 8 through 13 <br /> �C' At depths between 20 and 40 feet bsg,petroleum-Impacted soil is limited to the area of soil bonng P r, �� mil <br />' 'AP-3, the vertical extent of petroleum-impacted soil does not appear to extend beyond 40 feet bsg <br /> (Figure 11) l <br />' Based on Figures 5 through 13, equations for both half-cone shapes or half-cylinder shapes were <br /> utilized to estimate the mass and volume for TPH-g, TPH-d/mo and MTBE-impacted soil When the <br /> data collected at the site is plotted in both plan view and cross sectional views, the apparent total <br />' volume of gasoline-impacted soil totaled approximately 21%2 cubic yards,and yielded approximately <br /> 0 25 gallons of gasoline;or 1 6 pounds of gasoline remaining in soil, the apparent total volume of <br />' MTBE-impacted soil totaled approximately 209 cubic yards;and yielded approximately 0 59 gallons <br /> of MTBE, or 3 63 pounds of MTBE remaining in soil,�'the apparent total volume of TPH- <br /> d/mo-impacted soil encompassed approximately 952 cubic yards,and yielded approximately 12 7 <br /> gallons of diesel/motor oil, or 79 5 pounds of diesel/motor oil remaining in soil I Mass/volume <br /> calculations are included in Appendix C <br /> I4 0. SUMMARY AND CONCLUSIONS <br /> Based upon data collected in October 2003, AGE concludes <br /> • Gasoline-impacted soil is apparent in three separate areas, area no 1 is located near the <br /> northwest corner of former UST tank pit,area no 2 near the southwest corner of former UST <br /> tank pit and area 3 near the southeast corner of the UST tank pit All three gasoline-impacted <br /> areas appear to be laterally limited to an approximate 5 foot radius and extend vertically to <br />' maximum depths of <br /> 3`feet bsg gFigures 5, 8 and 11) vyv, <br /> • MTBE-impacted soil is apparent in the same three above mentioned gasoline-Impacted areas <br /> (area nos 1, 2 and 3), MTBE-impacted soil is evident in a fourth area near the middle-south <br /> section of the UST tank pit(area no 4) All four MTBE-impacted areas appear to be laterally <br /> ,. limited to a maximum radius of 10 feet, area nos 1, 3 and 4 extend vertically to maximum <br /> Advanced GeoEnvi ron mental,Inc <br /> I <br />