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<br />!, 1i Ili Consultants
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<br />All SJCPHS's' November 12, 1991 request, quarterly 'monitoring reports have been
<br />„
<br />I�" I submitted to SJCPHS and CVRWQCB� a work plan has beenI submitted"to define the extent
<br />lil
<br />of soil contamination as part of the Quarterly Monitoring Report dated February 1992, and , , ,�
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<br />the analytical requirements for the quarterly groundwater samples,have been met
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<br />w w „.3 PURPOSE
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<br />IE';iThe purpose of this report is to comply with SJCPHS request in the November 12; 11991 '
<br />1 '
<br />Illetter to prepare and submit quarterly monitoring reports' for the IMajor Mai -t site. This
<br />report was prepared following the report requirementsasspecified in the November 12, 1991
<br />1
<br />letter and "Appendix A - Reports,r Tri -Regional ',�Boar'd'��Staff 1"'I Recommendations' 'for n "
<br />11�i1,I la',Preliimnary Evaluation and Investigation of Underground (Tank Sites" (August 1991) a,1
<br />1.4 SCOPE
<br />'IIThe scope of Wli work during the quarter ending EMarch 1992 included the collection of '
<br />`' uarterlYgroundwater monitoring data and the collection of data to evaluate if the tank
<br />excavation could be backfilled in view of lead clean up standards
<br />I i
<br />E
<br />I' I !,I g quarterly monitonni�t ; To conduct the groundwater uarterl WCCp cog
<br />m ` leted the following tasks'
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<br />a 1 measured the water level in each well,i
<br />I
<br />I€; °III it I
<br />' t I I; 2 purged the wells of approximately, three' well' casing volumes;
<br />I I E i n it I „ ,
<br />Jll ,I ` ,, 3. sampled the purged wells o3n Marchs' 3Q�,' '1992 for TFH, BTEX; total'; lead) and I
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<br />fecal coliform,
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<br />4 submitted the samples collected to Matrix Environmental; Laboratories', Inc.
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<br />r--ri - - _ (Matrix) in'Rancho Cor"dova; California and Anlab;lnl'Sacrainento California w W T
<br />iII i , Il ,I,Ii u II I I'
<br />iglfoI r analysis, and
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<br />5.!" Irevaluated and t
<br />abuv l,at_edl 'th1 e d 'II ,all! `nI d„ I ,i ,IpIEnii!re+r I pIIII ar� edI "I 'I mr I a p"sp i 'n'II, otI inE
<br />grlu sIfIl11ia1I1I1II1 I mmIIipII
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<br />, ed
<br />froundwater contaminant concentrations
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<br />All
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<br />To;,collect datal°to'backfill the excavation in view of lead clean up standards" WCC completed
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<br />a , Ill ; I; ! 6 11 V. IIII 11
<br />theilfollowing , ' I', f li I r , r m, II i41 I,I III E31�'I L AII, 31 ,u ! Ei nl l
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<br />1CMI'38BIMMARTQR 192 06-12-92 1-' I 11 IIE II I� Q ,s
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