Piseco Lake Air Monitoring Site Trends (1987-2006)

Piseco Lake Acid Deposition Data, 1987 - 2006
Year	Precip. in	pH	[SO4] ippm	[NO3] ippm	[NH4] ippm	SO4 Dep. kg/ha	NO3 Dep. kg/ha	NH4 Dep. kg/ha
87
88	45.38	4.37	2.36	1.34	0.28
89	54.76	4.29	1.86	1.48	0.51	25.82	20.59	7.08
90	64.72	4.26	2.20	1.62	0.34	36.12	26.62	5.63
91	40.11	4.20	2.48	1.87	0.35	25.23	19.08	3.57
92	47.97	4.25	2.24	1.59	0.29	27.26	19.43	3.56
93	46.72	4.29	2.03	1.57	0.29	24.06	18.58	3.50
94	40.33	4.35	2.04	1.55	0.34	20.92	15.84	3.50
95	40.39	4.33	1.82	1.64	0.35	18.69	16.85	3.62
96	53.51	4.40	1.66	1.31	0.29	22.53	17.79	3.99
97	39.05	4.35	1.67	1.63	0.33	16.58	16.18	3.24
98	37.40	4.40	1.65	1.56	0.33	15.67	14.78	3.14
99	36.45	4.41	1.42	1.32	0.22	13.16	12.25	2.00
00	54.81	4.32	1.44	1.52	0.29	19.97	21.21	4.06
01	39.56	4.43	1.29	1.51	0.28	13.00	15.21	2.78
02	50.13	4.54	1.34	1.33	0.27	17.03	16.99	3.49
03	54.66	4.59	1.21	1.30	0.34	16.49	18.33	4.96
04	46.64	4.58	1.42	1.10	0.27	16.86	13.09	3.23
05	48.94	4.70	0.91	1.16	0.32	12.01	16.86	4.68
06	66.83	4.76	0.98	0.69	0.23	17.11	11.85	4.02

Blanks indicate that the rainfall criteria were not satisfied. That is, analysis of at least 75% of the annual and 50% of the quarterly precipitation.