Abstract
The US Environmental Protection Agency maintains networks of pollution monitors for two basic purposes: to check and enforce the attainment of national ambient air quality standards (NAAQS) and to provide useful data for studying pollution and its effects. These purposes imply conflicting criteria for the locations of a limited number of monitors. To check the attainment of standards, monitors are placed where pollution levels are highest. Monitors are not required where standards have always been met and there are no new pollution sources. To provide useful data for studying pollution and its effects, monitors would be placed to observe outcomes under a variety of pollution levels. This study asks the following questions. What factors affect when a monitor is retired from the network? What drives the decision to add a new site? What causes year-to-year changes in the number of monitors? We tackle these questions with a particular focus on the role of regulatory compliance and pollution levels in the context of monitors for tropospheric ozone (O3). Using a panel dataset of monitors in the contiguous US spanning the years 1993 to 2011, we find that the peak O3 readings in the prior period are significantly associated with the regulator’s decision of whether to add or to drop a monitor in the following period. While compliance with the NAAQS for O3 is not consistently associated with network composition, compliance with the PM2.5 NAAQS does appear to affect changes to the network.

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Notes
In its recent Integrated Science Assessment for Ozone and Related Photochemical Oxidants [22], the USEPA investigated the correlation among monitors in the networks of 20 cities (CITE). This investigation, however, sought high correlations in support of health studies based upon aggregate pollution measures.
This process, and guideline for it, is described by the USEPA at http://www.epa.gov/ttn/scram/guidance/guide/final-03-pm-rh-guidance.pdf
Baldauf et al. [4] note that the primary objective of the NAAQS is the protection of human health. Hence, a methodology focusing on, effectively, a ranking of sites by health risks is still motivated by regulatory concerns, rather than purely measurement.
We computed goodness-of-fit tests for these parametric models using the approach described in Andrews [2]. Despite fitting the data reasonably well, these tests reject the parametric models because the sample sizes are quite large. Given the qualitative agreement among our parametric models, we remain confident that the parameter estimates give an accurate representation of the patterns in the data.
This is how attainment status is coded by the USEPA (see: http://www.epa.gov/oaqps001/greenbk/data_download.html)
References
Adams, R. M., Glyer, J. D., Johnson, S. L., & McCarl, B. A. (1989). A reassessment of the economic effects of ozone on United States agriculture. Journal of the Air Pollution Control Association, 39, 960–968.
Andrews, D. W. K. (1988). Chi-square diagnostic tests for econometric models: theory. Econometrica, 56(6), 1419–1453.
Baldauf, R. W., Lane, D. D., & Marote, G. A. (2001). Ambient air quality monitoring network design for assessing human health impacts from exposures to airborne contaminants. Environmental Monitoring and Assessment, 66, 63–76.
Baldauf, R. W., Lane, D. D., Marotz, G. A., Barkman, H. W., & Pierce, T. (2002). Application of a risk assessment based approach to designing ambient air quality monitoring networks for evaluating non-cancer health impacts. Environmental Monitoring and Assessment, 78, 213–227.
Bell, M. L., McDermott, A., Zeger, S. L., Samet, J. M., & Domenici, F. (2004). Ozone and short-term mortality in 95 US urban communities, 1987–2000. Journal of the American Medical Association, 17, 2372–2378.
Chang, N. B., & Tseng, C. C. (1997). Optimal design of a multipollutant air quality monitoring network in a metropolitan region using Kaoshung, Taiwan as an example. Environmental Modeling and Assessment, 57, 121–148.
Hoel, M. (1997). Environmental policy with endogenous plant locations. Scandanavian Journal of Economics, 99(2), 241–259.
Jerrett, M., Burnett, R. T., Pope, C. A., Ito, K., Thurston, G., Krewski, D., Shi, Y., Calle, E., & Thun, M. (2009). Long-term ozone exposure and mortality. The New England Journal of Medicine., 360, 1085–1095.
Kainuma, Y., Shiozawa, K., & Okamoto, S. (1990). Study of the optimal allocation of ambient air monitoring stations. Atmospheric Environment, 24B(3), 395–406.
Lesser, V. M., Rawlings, J. O., Spruill, S. E., & Somerville, M. C. (1990). Ozone effects on agricultural crops: statistical methodologies and estimated dose-response relationships. Crop Science., 30, 148–155.
Liu, M. K., Avrin, J., Pollack, R. I., Behar, J. V., & McElroy, J. L. (1986). Methodology for designing air quality monitoring networks. Environmental Monitoring and Assessment, 6, 1–11.
Markusen, J. R., Morey, E. R., & Olewiler, N. (1995). Competition in regional environmental policies when plant locations are endogenous. Journal of Public Economics, 5, 55–77.
Modak, P. M., & Lohani, B. N. (1985). Optimization of ambient air quality monitoring networks. Environmental Monitoring and Assessment, 5, 1–19.
Muller, N. Z., Mendelsohn, R., & Nordhaus, W. D. (2011). Environmental accounting for pollution in the United States economy. American Economic Review, 101, 1649–1675.
Oates, W., R. Schwab. 1996. “The theory of regulatory federalism: the case of environmental management,” in W. Oates, the economics of environmental regulation (Aldershot, U.K.: Edward Elgar. 1996), pp. 319–331.
United States. Federal register. 76 FR 48207.
United States. United States code, 42 USC § 7410.
United States. Code of federal regulations, 40 C.F.R. § 58.
United States Environmental Protection Agency. (1999). The benefits and costs of the clean air act: 1990–2010. USEPA Report to Congress. USEPA 410-R-99-001, office of air and radiation, office of policy, Washington, D.C.
United States Environmental Protection Agency. (2010a). The benefits and costs of the clean air act: 1990–2020. USEPA report to congress. Office of Air and Radiation, Office of Policy, Washington, D.C. http://www.epa.gov/air/sect812/aug10/fullreport.pdf.
United States Environmental Protection Agency (USEPA). 2012. http://aqsdr1.epa.gov/aqsweb/aqstmp/airdata/download_files.html.
United States Environmental Protection Agency. (2013). Final report: integrated science assessment of ozone and related photochemical oxidants. http://cfpub.epa.gov/ncea/isa/recordisplay.cfm?deid=247492.
United States Environmental Protection Agency. (2016). http://www.epa.gov/aboutepa/our-mission-and-what-we-do.
Venegas, L. E., & Mazzeo, N. A. (2003). Design methodology for background air pollution monitoring site selection in an urban area. International Journal of Environment and Pollution, 20(1–2), 185–195.
World Health Organization (WHO). (1977). “Air monitoring programme design for urban and industrial areas.” Global Environmental Monitoring System. WHO Offset Publication No., 38.
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Muller, N.Z., Ruud, P.A. What Forces Dictate the Design of Pollution Monitoring Networks?. Environ Model Assess 23, 1–14 (2018). https://doi.org/10.1007/s10666-017-9553-7
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DOI: https://doi.org/10.1007/s10666-017-9553-7

