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results recorded in the field data sheet. Lambert recorded sample SS-32 to have 32% gravel; soil in <br />this excavation was sieved and found to have 10% gravel, suggesting that the excavations were not in <br />identical locations, although they are within 10-15 feet of each other, In addition, EC was found to be <br />suitable at this location (Table 2), as it was reported to be unsuitable at the previous SS-32 sampline <br />location. All other sample points had gravel concentrations similar to those reported by Lambert <br />(Table 3). No boulders (>25 inches) were observed in any soil pit, All field data were recorded on <br />field data sheets. copies at which arc attached to this letter. <br />The sample of spoil from 30 inches to the pit bottom (usually 50-60 inches) was obtained For analysis <br />of boron, pH. and EC by Seryi-Tech Labs, with results recorded on Table 5. No exceedances of <br />relevant criteria were measured at any sampling location. <br />Discussion - Soil sampling was condected at locations specified by WFC, Coarse Fragnient <br />percentages exceeded relevant criteria at sampling points NHSS-240 and NHSS-241, and the average <br />of the eight coarse fragment percentage samples For Bench 1 Suitable Subsoil exceeded the suitability <br />criterion. No other results exceeded relevant criteria. <br />SS-32 was re-sampled for all criteria, as it had previously exceeded rock fragment and 17,C criteria. <br />The SS-32 sample for lhis investigation was taken sonic distance away from the original SS-32 <br />location, and die soil was Found to pass all criteria (Table 2). All results are summarized in the <br />attached tables. Field sampling data sheets, chain-of-custody forms, and laboratory analytical data are <br />attached to this letter. Photographs of sampled locations are available at your request. <br />Please contact me at C970) 241-4636 if you have any questions on this matter. Thank you for selecting <br />Walsh For your project, <br />Sincerely. <br />'Walsh Environmental S ntists & Engineers, LLC <br />) '4` <br />kclward Ni. But4r. , CHMM <br />Project Manager <br />Attachments: <br />Tables <br />Chain of Custod forms <br />Laboratory analytical data <br />Field data sheets <br />Table 2 _05,41( 2)(d)- I <br />P.,11% Scientists rind <br />h <br />