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<br /> KLEINFELDER
<br />§� R *'S 4 k;.r i t r I t.r - ;r -a a'x . 'e«'• a z F x ,. :. ,
<br />+� ��i .t ► ,.-TPH Extractable by GC-FID (.Method 3550).
<br /> r, ''Volatile
<br />` ? 'Volatile Organic Compounds by EPA Method 8020"t"?,"' .. `
<br /> L� r4L , r ►' Halogenated Organic Compounds by EPA Method 8010. }tt ' ' !
<br />' ' , k� ► Oii and Grease by Gravimetric Method 413.1.' s
<br /> Xr; ;� +, o
<br /> ► ! :Metals: 'Cadmium,' Chromiumd
<br /> 'y Y ( and, Zine .by'Induc. edhCole Argon
<br /> (1CP) Spectroscopy r
<br /> r`
<br /> p I
<br /> l 3 �� ,� Because semi volatile- organic compounds were not detected >n sem lescollected in,prror
<br /> a soil assessments the two samples will not be,analyzed by EPN Method 8270
<br /> Task 4'- S ` I ' 3
<br /> q} t tockpile,Sampling and Analysis ,
<br /> During the excavation of the clean soil that was used to backfill the former excavation; the
<br /> , ' f��, i soil will be stockpiled separately from the affected soil beneath it:; Both stockppiles will be I
<br /> iF4�;z sampled to assess,potential concentratioiis.'bf.TPH; Eight soil-sazirpples will,be collected
<br /> from;the clean pile;arid:composrted:to four,s�amples;',.Tlie saneples.wrll be``atzalyzed for;TPH.'.�-
<br />� th " r 'extractable by GC-FID to evaluate if the'soil will.be, suitable to backfill the excavation.
<br /> The samples will be analyzed on a'3 to 5',',wo`' ng day r
<br /> can ush laboratory schedule so that the w _�
<br /> 1 excavation be backfilled as soon as ossible g r _ y
<br /> •�WtF � ` r � 1 w
<br /> Similarly, the stockpile of affected soil willbe'.sampled to assess. concentration of TPH:
<br /> Dis m
<br /> p osal.or remediation options of the soil can-be assessed based'bn.the analytical results
<br /> and volume of the' excavated affectedsoil. Eight soil :samples swill be collected 'and
<br /> er r a!X 3r composited to'four samples for laboratory analysis: The samples will be analyzed for TPH > .-
<br /> �;G extractable by..,GC-FID on a normal..laboratory schedule requiring approximately three
<br /> t weeks. normal. A
<br /> F�1 't, Task 5 Earthwork Placement; Compaction and Testing
<br /> r4 Upon receipt of laboratory results for,s anrecommenoil samples collected during the excavation, the data 1
<br /> will be evaluated d dations:f made addressing backfilling -';of the Open
<br /> � �ir
<br /> excavation.' Every effort will be -made to. ;backfill the excavation on' a fast'track basis..
<br /> 'Based on the results of the laboratory analysis, Kleinfelder will recommend backfilling the. ,
<br /> excavation with the stockpile of clean soiland imported borrow material needed to fill the
<br /> excavation.up to the surrounding grade
<br /> , - { Kleinfelder will retain the servrcesrof'!a ,;qualified subcontractor `to ,obtain Sufficient
<br /> quantities of imported clean borrow soil,'to'liackfill the excavation., The subcontractor will
<br /> obtain and deliver-the soil to the site (up to'500 cubic yards) and compact.the'Soil during
<br /> backfilling.,-It is estimated,that this,phase;of work will take two to three daysill., >,
<br /> .' During placement of; the backfill, Kleinfeitler will provide the 'following geotechnical
<br /> + services. l F
<br /> lx 4
<br /> o Observe backfill placement and compaction procedures,
<br /> r r o Conduct field density testing.o€engineered backfill;
<br /> o r ` Laboratory testing of soil samples,for clat ium dry density
<br /> evaluations , ;
<br /> { l
<br /> S - F ,Ax o Observe tlae excavation tv i.evalirate deppARwlcii�h�g� d' the"Isubsurface
<br /> conditions enCQUntered; ! T'
<br /> �< 4 1EM�IZI�4
<br /> ,
<br /> jj
<br /> ENu1R�{��Nh 11CE5 1
<br /> PF2-9119 3 .
<br /> ,{ Copyright, 1991 Kleinfelder,_Inc. w I. /� ..
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