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TABLE 1 SU11iMARY OF SOIL SAMPLE RESULTS (Page 1 of 2) PROJECT NAII~IE: Aggregate Industries F Stree[ C,ravei Fii PROJECT LOCATION: 4509 F Street, Greeley, Colorado PROJECT NUMBER: 1001018 Approximate PAHs Sample Sample Sample Depth Benzene Toluene Ethylbenzene Xylenes (each compound) TEPH Name Date (fee[ below grade) (µg/I:g) (µg/Kg) Qtg~g) (1tg~+g) (Itg/Kg) (mgfKg) Acres m N C~mnlec North Wall East End 05/29/01 11 to 12 <2, <2, q, <2. NA <10. North Wall Wcst End 05/29/01 1l to 12 <2. Q. <2. <2. NA <10. West Wall North End 05/29/01 11 to 12 Q. 2,422. 7,250. 11,789. <50. 4,399. Bottom#1 05/29/01 13 to IS <2. 307. 1,067. 1,868. <50. 2,440. Wes[ Wall South End 05/31/01 11 to 12 <2. <2. <2, <Z. NA <10. South Wall West End 05/3!/0] I1 to 12 <2. <2. <2. 7. NA 371. South Wall Middle 05/31/01 11 Io 12 <2. <2. 606. 1,]53. <50. 3,273. South Wall East End 05/31/01 11 to 12 <2. <2. <2. <2. NA <10. East Wall 05/31/01 1 I Io 12 <2. <2. Q. <2. NA <10. Test Pit 1 06/] 1/Ol 14 to 15 <2. <Z. <2. Q. NA <10. TeslPit2 06/11/01 lltol2 <2. <2. <2. Q. NA <10. Tier 1 RBSLs/TPH Threshold 260. 170,000. 200,000. 1,900,000. 310,000. 500. ores: I) Approxinute sample locations are shown on Figure 3 in Appendix A. 2) TGPN =Total Extractable Petroleum Hydrocarbons. }) pg/lig=micrograms per kilogram. 4) mg/Kg =milligrams per kilogram. 5) 'tier 1 RBSLs =Tier 1 Risk-Based Screening Levels (or the Leachate to G roundwater Ingestion exposure pathw ay as taken from Table 5.1 in the Storage T ank Regulations (7CCR 1101-141. [,) BoIU indicates an exceedance of the TPFI Threshold. 7) PAlls = Polynuclear Aromatic Iydrocarbons which consists o(16 individual compounds. The 16 individual PAfls ere listed in the laboratory reports in A ppendix C. B) <=Less than the laborolory detetlion lima. 9) NA =Not Analyzed. ~ PA /~ GON 10) The Bottom N 1 soil sample was collected from beneath the groundwater table and the sample was titled through apparently impacted groundwater. 1~L 1