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<br /> ' Jerry Lue Page a
<br /> February 2,2005
<br /> Table 1. SOIL DATA GAPS
<br /> Data Gas Apartment Area Undevelb Area-
<br /> Ad(va•Soll Gar Methane sampling -SV-4, SV-7, -6,SV-9(see DTSC, SV-1,SV-2,S&1/MW 17,6B
<br /> Md analyses(EPA TO-3 modified or 2004 regarding reiecetina),SV-10, 2,SD-3,S&4,SB-5,SB-8,
<br /> ASTM D-1946)as wall as pressure SV41,SV-15(or another nearby 51 20,TR-3,2ATP-8,and
<br /> testing with approval by the least location If within zone o(DIPS-10 other locations based on
<br /> Fire Department. Influence),under apartment buildings undwWound features
<br /> (near SV-4,SV-10,SV-11,SV-14, uncovered and Mal results or
<br /> SV•16(or another nearby locallon if the sampling and analyses
<br /> within sane of DIRE-1 0 influence),as conducted during pipeline
<br /> well as the building behvaen SV-7 removal.Additional locations
<br /> and SV-8). Additional location may based on preferential
<br /> be neoessery after DTSC recgives pathways created by Interim
<br /> maps of underground utilllyaorridors. remedial activities and SVE
<br /> we8lnsiallatlon.
<br /> Adne SoY Gas.Flvdrocen sulfide SV-4,SV-7,SV-8,SV-5(move to Sampling locations as
<br /> (EPA Method 16,glass lined south of bulldingj SV-l0,SV-11,SV- identified above.
<br /> Summa Canisters),and VOGs(TO- 13,SV-14,SV-15,and SVA?.
<br /> 14 SIM,Summa Canisters) Additional locations may be
<br /> necesseryafter DTSC receives maps
<br /> Sample-al.5 it bgs and depth of of underground utility corridors,
<br /> captilery fringe In accordance vrllh
<br /> DTSC guidance and advisory
<br /> (DISC,2003,2004).
<br /> Two rounds(with one being in the
<br /> summer)wllhout significant rain or '
<br /> Irrigation prior to sampling(DTSC,
<br /> • 2004 .
<br /> So1L Oeolachnlcel Parameters SV-4,SV-7,SVS,SV-9 move to Sampling locations as
<br /> south of building),SV-10,SWI 1,SV Identilied above.
<br /> Sample at 5 ft bgs(and depth of 14,SV-17,and resample at SV-12,.
<br /> capillary fringe). SV-13•SV-116 and SV-16 Hno data .
<br /> on the last wale sill event prior to
<br /> Collect after no significant raln or collection of previous data.
<br /> irrigation(DTSC,2004). Atiffonal locations may be
<br /> necessary,after DTBC receives maps
<br /> of underground uNN corrldors.
<br /> Sort.PARS(Method 6270 51M or SB-a and additional locations maybe Sampling locatlone as
<br /> 8910) necessary after DTSC receives maps ideniifled above. (Note:no
<br /> of underground utility corridors. PAH data were previously
<br /> Depths:0,6.and capillary frin a collected from 884 and SB-6
<br /> Sort klels - Addfdonel locations may be Sampling locations es
<br /> necessary atter DTSC recafvas maps IdentMed above. (Nate:no
<br /> Depths:0,5,and capillary fringe of underground usury corridors. metals data were previously
<br /> collected from SBS
<br /> Table 2. GROUNDWATER DATA GAPS
<br /> Data pas Apartment Area Undeveta Area
<br /> Groundwater Unable to evaluate due to m(astng Unable to evaluate tlue to missing.
<br /> date such at missing pages of data data ouch as missing pages of data
<br /> tables,sample locations on maps, tablas,sample locations on maps,
<br /> and Whether data are total or and whether date ata tptal or.
<br /> dissolvedconcentrotlons. dissolvedconcenhations.
<br /> 050202JLdoc .
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