SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

• • Project No.013-10141 Page No. 5 Active Clarifier,Rash Rack and Drain • Two soil borings 03-4 and B-5) were advanced to a depth of ten feet bgs adjacent to each end of the active equipment wash clarifier located within the northern, exterior portion of the site building (See Figures 2 and 3). Soil samples B-4@10' and B-5@10'were collected from their respective borings for laboratory analysis of TPH-g,TPH-d,VOCs,and LUFT Metals • Two soil borings(B-6 and B-7)were advanced to a depth of three feet bgs adjacent to each end of the active equipment wash drain located within the northern, exterior portion of the site building (See Figures 2 and 3). Soil samples B-6@3' and B-7@3'were collected from the base of their respective borings for laboratory analysis of TEPH,VOCs,and LUFT Metals • Three soil borings (B-8, B-9 and B-10) were advanced to a depth of three feet bgs adjacent to each end and within the middle of the active equipment wash rack located within the northern portion of the site building (See Figures 2 and 3). Soil samples B-8@3', B-9@3' and 13- 10@3'were collected from the base of their respective borings for laboratory analysis of TEPH, VOCs,and LUFT Metals 6.1 Field Observations During Krazan's field activities, relatively moderate volatile petroleum hydrocarbon odors were noted in soil samples B-2@10' 15' and 20' and B-3@10', 15' and 20' collected from each end of the inactive clarifier located within the southern portion of the subject site. PID readings for B-2@10' 15' and 20' indicated concentrations of volatile constituents at 950 parts per million (ppm), 800 ppm, and 230 ppm, respectively, and for B-3@10', 15' and 20' at 137 ppm,350 ppm,and 300 ppm,respectively. No odor or discoloration of soils was identified in the other borings/samples completed by Krazan. Soils encountered in the borings completed during this investigation consisted of grey clayey soils within samples collected from B-2 and B-3,and dark brown clayey soils in the remaining samples. Groundwater was not encountered during this investigation. 7.0 FINDINGS AND SOIL SAMPLE ANALYTICAL RESULTS The laboratory analytical results and the chain-of-custody form for the soil samples submitted for analysis during this Phase II LSI are presented in Sierra's Laboratory Report in Appendix A. These laboratory results are summarized on Table I following the text of this report. The following is a summary of the soil sample analytical results: Inactive Clarifier and Drain • According to the laboratory analytical report, soil sample B-1@ 5', collected adjacent to the location of the inactive equipment wash drain located within the southern portion of the site building,was reported as none detected(ND) for TPH-g,TPH-d, and VOCs. Soil sample 13- 1@5' was reported with less than significant concentrations of heavy metals including KRAZAN&ASSOCIATES,INC. Conducting Assessments Nationwide 1310141 United RmWs LSI DRAFr.d.