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F "( •T 1' !FT 'R 1 ✓P'1'�i Mdd '+TfiY' f i/'` x' <br /> l y ° �w` Gfi" ,• � . <br /> if*��nt�' "f.[a1Xk«� F pit ",�'r��� sfio �F <br />��K' r•Ir.�-,�.�,t�.5: :tiY. l� � � r,,� -�•�.��-�,usr� � 'ta P'��i, r+��,s��u ,'�3f,'r'.,�i^ .1^�.:,�� 2! �e��f';�*,y' �,y�79� G ' ,+ykyy✓ 'F. „�r �. li. 'li �r�r'.-. <br /> t✓wr_� <br /> Y <br /> 1 <br /> k""+3 <br /> August S, 1991 6100,Tracy. Ca}i10Tn11 <br /> ARCO Staiton No .—�— end hydrometer <br /> Selected bortll tlresesinq sieve <br /> three soil samples train Data from 1ria1 ses will tion a is 4 <br /> LI Slll)itllt oik composition. D vapor exiractiun <br /> ac3al�ses <br /> to <br /> evaluate s of ttrc eflectivcness of t <br /> engineers in theft cvaiu the <br /> method for remediating;the soil. <br /> jortaUle vapor <br /> -extractlotl Sysietl3 t0 the ite. <br /> ort a <br /> o rec} <br /> aired to oUtau3 vapor samples and <br /> operate the vaporcxtraclion system ansVI � <br />' ressure and flow rate infarlt3ation. <br /> 0 11'l[ aid <br /> vacuum p roved laboratory 'jlalysis o1 ' ' g <br /> les to a Slate app respectively. <br /> Submit vapor sarnp � $p20 and bOls (rrradtCied). <br /> o by L?A Method. work is <br /> ��IsX valuate whet}ter further site and <br /> rrialytical "ata�to c in tile soil beneath the � atld <br /> Interpret the f,eld and Fhe results of this investigation • � <br /> ° ells. <br /> required to Assess the <br /> extrac4ion3wdroc`rbOih ARCO <br /> tyle location of vap <br /> ,cussc '"`i <br /> � les for <br /> our recornmendai1°ns will be d'y� ositc soil sarnp <br /> Of the analytical results of the comp <br /> Prepare a letter of drill cuttings• <br /> ° s contractors to dispose <br /> of our investigaiton and OUT <br /> AltCO'• results of soil. <br /> 0 1 a status report of the <br /> Prep.;rc sand prepare a work plan for rcl�lediatinn <br /> ° endation t Plan Na• 3(1041 <br /> recomm ,to our��1or.c fans were <br /> , according, Ttresc p <br /> wilt be cane:cie s attached to this plan' for Initial <br /> n1e work described in this plan rocedtire• � aft lteco+emendation <br /> r 15. 199D. and our Ctetd p al }3oard ionat R PCCOI-( <br /> atnendatians}. <br /> 1}�r,dated Ma Y the Central Vattcy lt_ on�� (Tri•Reg rot,nA Filet <br /> using round m. leder <br /> prepared of Llndcr ~and the t eakin rand construction of <br /> EYa, limon and CnvGsti anon e �datlons. <br /> A of the Tri-Regtonat R `file methods for instillation <br /> endtx test are described to t}te aitPharse <br /> p'pp LUF`f) as re{erences• or-extraction this p <br /> Vaak M nr—'—al ( >erfarming a vap t rfortned at the site du}a g o SSCI'b1S <br /> extraction Fells and } of be p' <br /> vap°Ty tternediatton of soil p�GO will subr3lit a remediation p <br /> Field procedurzs' is begun, <br /> of work. Before re 3i?d ytpuUlic review. <br /> for review, and for <br /> l a <br /> G+ 0619ccar <br /> Y 3p651-ZW <br /> OHM <br /> - - --- e1lwR1oe11A29P,11Rdil� . <br />