RAQC 1999 Summer Ozone Reduction Campaign

Data Tables

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Table 1. 8-Hour Ozone Concentrations (ppb)

Monitor		1999
County	Location	4^th Max		3^rd Max		2^nd Max		1^st Max
Jefferson	NREL, 20^th & Quaker	80	6/26	81	7/6	84	7/13	85	7/27
Jefferson	Rocky Flat X1 16600 Hy 128	80	6/26	81	7/27	87	7/1	92	7/13
Boulder	S. Boulder Crk Foothills Pkwy	75	7/1	77	7/7	83	7/27	86	7/13
Douglas	Chatfield Reservoir	75	7/28	77	8/26	79	6/26	79	7/13
Jefferson	Arvada 57^th & Garrison	72	7/17	72	7/7	76	7/27	81	7/13

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Table 2. Annual 4^th Maximum 8-Hour Concentrations (ppb)

Monitor		1996	1997	1998	1999	1996/98 3 Yr Ave	1997/99 3 Yr Ave	2000 Allowable
County	Location
Jefferson	NREL, 20^th & Quaker	82	75	95	80	84	83	79
Jefferson	Rocky Flat X1 16600 Hy 128	83	76	92	80	83	82	82
Boulder	S. Boulder Crk Foothills Pkwy	75	72	89	75	78	78	90
Douglas	Chatfield Reservoir	79	75	81	75	78	77	98
Jefferson	Arvada 57^th & Garrison	73	70	89	72	77	77	93

Violation: 3 year average of 4^th maximum is equal to or greater than 85 ppb

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Table 3. Annual Maximum 1-Hour Concentrations (ppb)

Monitor		1996	1997	1998	1999
County	Location
Jefferson	NREL, 20^th & Quaker	112	99	121	107
Jefferson	Rocky Flat X1 16600 Hy 128	104	99	120	105
Boulder	S. Boulder Crk Foothills Pkwy	88	94	112	103
Douglas	Chatfield Reservoir	104	99	132	94
Jefferson	Arvada 57^th & Garrison	102	98	111	98
Arapahoe	Highland Resrv. 8100 S University	105	83	124	105

Violation: 2 year average of exceedances equal to or greater than 1. An exceedance is a monitored 1-hour value greater than 125 ppb.

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Table 4. Maximum 8-Hour Ozone Concentrations

Correct Calls & Accuracy above 75 ppb

Date