ARCHIVED REPORTS_2019 SOIL MGMT PLAN (MAY)

Home Browse Search

Soil Investigation Report Pilkington North America, Inc. March 30, 2011 Page 5 Hydrocarbon odors, gray staining, and PID detections were noted between 1 and 12 feet bgs in boring GP 15, near the location of the historic release. Hydrocarbon odors, gray staining, and/or PID detections were noted between 4 and 12 feet bgs in borings GP 17, GP 18, GP 19, and GP20. No hydrocarbon odors were noted but gray staining, and PID detections were noted between 4 and 10 feet bgs in boring GP 13. No hydrocarbon odors were noted but gray staining and PID detections were noted from 8 feet to 12 feet bgs in boring GP 14. No hydrocarbon odors were noted but gray staining and PID detections were noted from 7 feet to 12 feet bgs and 11 to 12 feet bgs, respectively, in boring GP 16. No hydrocarbon odors were noted but PID detections were noted from 8 feet to 12 feet bgs in boring GP -12 with gray staining beginning at 11 feet. No hydrocarbon odors or PID detections were noted in boring GP -21, but gray staining was noted beginning at 10 feet. No hydrocarbon odors, gray staining, or PID detections were noted from the surface to 12 feet bgs in borings GP22 and GP23. PID measurements of soil samples collected from the borings indicated organic vapors were detected at concentrations up to 145 parts per million (ppm) in GP IS at approximately 10 feet bgs. Field observations generally indicated that there was a pattern of greater hydrocarbon impacts with proximity to the location of the original release location. 6.2 RESULTS OF LABORATORY ANALYSES Soil sample laboratory analytical results are presented in Table 1, below. Laboratory analytical results for the composite sample for waste disposal characterization are presented in Table 2, on the following page. Copies of laboratory analytical results and chain -of -custody records for the samples are included in Appendix C. Table 1 Soil Sample aborator r Analytic I Results Method SW8021B /8015Bm SW8021B /8015Bm SW8021B /8015Bm SW8021B /8015Bm SW8021B /8015Bm SW8021B /8015Bm SW8015B Sample I.D. Sample Date B (mg/kg) T (mg/kg) E (mg/kg) X (mg/kg) MTBE (mg/kg) TPH-G (mg/kg) TPH-D (mg/kg) GP12 - 12 3/18/11 NA NA NA NA NA NA 2.1 e GP13 — 9 3/18/11 NA NA NA NA NA NA 2.0 e GP14 — 10 3/18/11 NA NA NA NA NA NA 11 e' GP15 —11 3/18/11 NA NA NA NA NA NA 14,000 e' GP16 —10 3/18/11 NA NA NA NA NA NA 4,000 e' GP17-11 3/18/11 NA NA NA NA NA NA 8,200 e' GP18 — 11 3/18/11 NA NA NA NA NA NA 12,000 e' GP19 — 11.5 3/18/11 NA NA NA NA NA NA 11,000 e' GP20 —11.5 3/18/11 NA NA NA NA NA NA 5,200 e' GP21-12 3/18/11 NA NA NA NA NA NA 2.5 e GP22 —11.5 3/18/11 NA NA NA NA NA NA 1.3 e GP23 — 11 3/18/11 NA NA NA NA NA NA 5.2 e' Disposal — com 3/18/11 < 0.005 < 0.005 < 0.005 .01 04 < 0.05 25 d 2,400 e' Unit Conversions: Analytical: mg/kg = milligrams per kilogram B,T,E,X = benzene, toluene, ethyl benzene, total xylenes = parts per million (ppm) MTBE = methyl tertiary -butyl ether TPH-G = total petroleum hydrocarbons, quantified as gasoline TPH-D = total petroleum hydrocarbons, quantified as diesel e' =unmodified or weakly modified diesel is significant e2 = diesel range compounds are significant; no recognizable pattern d = strongly aged gasoline or diesel range compounds are significant in the TPH(g) chromatogram NA = not analyzed 1W 1 n