publications > open file report > OFR 2004-1448 > appendixes > Appendix F

Appendix F. Lead-210 for 02-5-21-2.
Core Location: 02-5-21-2
Core ID	Depth (cm)	Mean Depth (cm)	Total Pb-210 Activity (dpm/g)	Total Pb-210 Activity Error (+/-)	Excess Pb-210 Activity (dpm/g)	Calc. Ln Exc. Pb-210 Activity (dpm/g)
02-05-21-2	0-1	0.5	26.14	0.489	24.78	3.31
02-05-21-2	1-2	1.5	28.30	0.465	26.94	3.22
02-05-21-2	2-3	2.5	23.36	0.620	22.00	3.14
02-05-21-2	3-4	3.5	21.25	0.737	19.89	3.06
02-05-21-2	4-5	4.5	25.13	0.616	23.77	2.98
02-05-21-2	5-6	5.5	19.24	0.514	17.88	2.89
02-05-21-2	6-7	6.5	21.60	0.505	20.24	2.81
02-05-21-2	7-8	7.5	13.38	0.341	12.02	2.73
02-05-21-2	8-9	8.5	5.97	0.279	4.61	--
02-05-21-2	9-10	9.5	7.02	0.137	5.66	--
02-05-21-2	10-11	10.5	4.07	0.104	2.71	--
02-05-21-2	11-12	11.5	2.50	0.091	1.14	--
02-05-21-2	12-13	12.5	1.24	0.055	-0.12	--
02-05-21-2	13-14	13.5	1.17	0.048	-0.19	--
02-05-21-2	14-15	14.5	1.17	0.049	-0.19	--
02-05-21-2	15-16	15.5	1.37	0.059	0.01	--
02-05-21-2	16-17	16.5	1.37	0.057	0.01	--
02-05-21-2	17-18	17.5	1.71	0.072	0.35	--
02-05-21-2	18-19	18.5	1.33	0.079	-0.03	--
02-05-21-2	19-20	19.5	1.51	0.049	0.15	--
			1.36
Average accumulation rate 0-8 cm = 0.4 cm/yr Estimated Ra-226 activity = 1.36 dpm/g, average of Total Pb-210 activity 12-20cm. Linear best fit of Ln Excess Pb-210 data (0-8cm). *Calc. Ln Excess = (-0.08295 * z) + 3.3468 r2 = 0.80