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r - cemoer 79 1°93 :age 2 TABLE-1 Dates of Soli Tilling ate Site 1 rifled tutu site -3r sled �5oii I pail Tming t,ersonnet Vn)ume %Io'l me (SunrnerERM) )/23,,93 CO cu va 6v0 cu va 5unriN er f i0;26/93 60 cu va 600 cu va Sunriver D/2-71/93 60 cu va 600 cu va Sunriver .fl/28/93 60 cu va 600 cu va Sunriver 10/29/93 60 cu vd 600 cu va Sunriver !I/l/93 60 cu vd 600 cu vd ERM 11/2/93 60 cu vd 600 cu va Sunriver 11/3/93 60 cu vd 600 cu va ERM 11/4/93 60 cu va 600 cu va Sunriver 11/5/93 60 cu vd 600 cu vd Sunnver 11/8/93 60 cu vd 600 cu va Sunriver 11/9/93 60 cu vd 600 cu va Sunriver 11/10/93 60 cu vd 600 cu vd ERM 11/11/93 60 cu vd 600 cu vd Sunriver 11/12/93 60 cu vd 600 cu va ERM 11/15/93 60 cu vd 600 cu vd Sunni er Prior to collecting post treatment contirmation samples, the effectiveness of }filling ror soil aeration was assessed on 3 Novemoer and 17 November 1993 ov analvzing a total of six soil samples collected trom the soil aeration pile by EPA Method 8015/8020 The samples were analvzed by Anametrix Laboratory of San Jose, Califorrua, a state certified laboratory Analytical results from these soil samples indicated that the concentration of chemicals of concern were below the applicable regulatory threshold Thus, after 15 November 1993, no turther soil aeration was performed The post treatment confirmation sampling was undertaken oy ERM on 13 December 1993, under San Joaquin Countv's supervision Twelve confirmation soil samples were collected by ERM ana submitted for anaivsis by EPA Method 8015/8020 to Anametrix Laboratory The analvtical results from 13 December 1993 confirmed that the cleanup goals for the soil were attained and that no further treatment (by aeration) was required All analytical results are presented in Table -2 The laboratory ciata sheets are included in Attachment A