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Mir SM <br /> TABLE 2B <br /> ESTIMATE OF TOTAL CHEMICAL MASS IN SOILS <br /> (Naphthalene and 2 Methylnaphthalene) <br /> Estimation of Residual Hydrocarbons in 40 foot diameter soil column beneath the former septic leach area <br /> Chemical Soil Soil Soil Residual Residual Chemical Chemical Chemical Residual <br /> Compound volume(1) Weight (2) Weight (3) Chemical(4) Chemical Mass (5) Specific Density(7) Density(8) Chemical Mass(9) <br /> (cubic feet) (lbs) (kg) Concentration(mg/kg) (mg) Gravity(6) (lbs/gal) (mg/gal) (gallons) <br /> I <br /> Naphthalene 1,948 196,728 89,235 25 223,087 86 10253 8 510 3860105 934 00578 <br /> Methylnaphthalene 1,948 196,728 89,235 44 392,634 64 10058 8 348 3786691 260 01037 <br /> 0 1615 <br /> Total 615,722 50 <br /> Notes <br /> (1) Based on 30 foot diameter base cone existing from surface to 31' bgs <br /> (2) Soil density treasured at 101 lbs per cubic foot(SECOR,September 30,1994) <br /> (3) Multiplied by conversion factor of (1 12 2046)kg/lb <br /> (4) Based on maximum detected residual concentration in soil boring(SB-3)sample as documented in Table B-1 <br /> (5) Average concentration multiplied by soil weight <br /> (6) Chemical specific gravity as published in handbook of Environmental Data On Organic Chemicals <br /> (7) Chemical specific gravity multiplied by density of water equal to 8 3 lbs/gal <br /> (8) Multiplied by conversion factor of 453,597 mg/lb <br /> (9) Residual chemical mass(mg)divided by the chemical density(mg/gal) <br /> (10) Concentration based on maximum detected in samples from SECOR boring SB-3 <br /> i <br /> SECOR Internwoaal Inc SECOR° CRC Eanm--mtal Rule Management I= <br /> Nournibrr 1991 <br /> N026ctt/N02601 <br />