Question

4. The aquifer of the example in note 4/4 has an organic fraction, foc, of 0.006, a dry bulk density, ρb, of 2,100 kg/m3, Kow = 240, and a porosity, Φ of 0.35. Estimate the total amount of TCE present by assuming Vbulk = 18750 m3, and Cavg = 129 mg/L.

Answer 1

hence average contamination is 111.60  μg/L

EXCEL SHEET IS

	depth(m)
location	5	10	15	avg row
a	20	50	75	48.33
b	10	30	65	35.00
c	180	300	350	276.67
d	340	650	700	563.33
e	60	90	110	86.67
f	30	55	70	51.67
g	3	5	70	26.00
h	15	25	30	23.33
i	1	3	6	3.33
j	0	2	3	1.67
		avg total=		111.60