The concentrations of the majority of these metals do not 

 exceed the common range of trace chemical elements in 

 natural soils. However, the detected concentrations of 

 antimony and cadmium do exceed the common range for these 

 metals (30). The common range of these elements in 

 natural soils are as follows: 



Antimony 2-10 ppm 



Cadmium 0.01 - 0.7 ppm 



No on-site disposal guidelines have been developed for 

 these detected metals. It is anticipated that mixed fill 

 materials such as those encountered in the borings would 

 contain metals at or above the indicated concentrations. 



Base/neutral extractable compounds were not detected in 

 B102 (S4 & S5) above the method detection limits. 

 Thirteen base/neutral extractable compounds were detected 

 at various concentrations above the laboratory detection 

 limits in the soil sample taken from B103. The combined 

 total concentration of these compounds is 182,300 ppb or 

 182.3 ppm. These concentrations of base/neutral compounds 

 are indicative of a incomplete combustion process, which 

 is also suggested by the presence of cinders in the fill 

 material (31) . According to 310 CMR 19, cinders and ash 

 are considered solid waste at this time, and may be 

 disposed of in a licensed sanitairy landfill along with 

 construction rubble and other solid waste. 



Two soil samples [B102(S11) and B103(S8)] were submitted 

 for total chloride analysis. The detected concentrations 

 for chloride were 784 mg/kg (or ppm) and 3,859 mg/kg, 

 respectively. DEQE policy requires that soils with total 

 chloride concentrations in excess of 250 mg/kg be disposed 

 of at areas which drain directly into a marine environment. 



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