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i <br /> T <br /> Youisuggested that an ignitability <br /> appropriate facility . <br /> test be performed on sludge contents to help clarify the <br /> classification • it was my,junderstanding that Southern <br /> Pacific is not required ( at this sage ) , to notify the <br /> DHS of upcoming field activities . <br /> o Regardless of whether the !pond contents are defined as <br /> hazardous , it is appropriate to conclude that a field <br /> investigation similar to the one proposed , will be <br /> required by the RWQCB . It was also agreed that the <br /> locations of proposed sampling points was generally <br /> acceptable , although certain details of well <br /> construction , depth and method of sampling remain to be <br /> worked out , pending additional discussions with your <br /> technical advisors at thejIRWQCB . In principal , the <br /> following items were modified from our original workplan <br /> proposal of October 9 ( Letter to John Livingston ) : <br /> I 'stem auger-split spoon <br /> Drill , using hollow ` <br /> sampling techniques ,!+ a series of borings ( as <br /> shown in the attachment ) through a depth to <br /> water table . Altho0gh samples would be taken <br /> continuously ( through a depth of 10 feet only , <br /> and at 5 foot intervkals beyond 10 feet } <br /> samples submitted for chemical analyses would <br /> be restricted to a maximum 3 samples per 10 <br /> foot interval . Unless visual or PID screening <br /> suggests otherwise , 1the samples submitted for <br /> analyses would include the 0- 1 1 /2 , 3- 4 1 /2 , <br /> and 8 1 /2- 10 foot intervals . Samples <br /> collected below 10 feet will be submitted for <br /> chemical analyses , at 5 foot intervals _ <br /> Samples will be collected in steam cleaned , <br /> unlined split spoons , described , and Paboratory <br /> screened in the field , and placed in <br /> sampling containers . Based on the <br /> results of the pond11sampling , the soils would <br /> be analyzed for total fuel hydrocarbons ( EPA <br /> 8015 ) and heavy metals ( CAM ) only . Evaluation <br /> of soil contaminant movement would be made by <br /> comparison with the designated control <br /> location , drilled in a presumed contaminant <br /> ! free location . All borings will be grouted to <br /> the surface upon a landonmen t . <br /> Drill three , 4-inch diameter , PVC well clusters <br /> ( designated A and B ) . Typical well <br /> construction details are attached . Screens <br /> would be 10 foot lengths of 0 . 010-inch slatted <br /> PVC , packed with # 3 Monterey sand . Sealing <br /> immediately above the screen would be performed <br /> using bentonite pellets , with grout to the <br /> k <br /> :}urfacc . "" ," zone ��e1. :l. s �.ould be screened <br /> within the uppermost water bearing zone , while <br />