GIS for Network Review

What is the Difference Between a Network Plan and a Network

Assessment? Network Plan - Not a new requirement [40 CFR 58.10(a)]Due every yearSimple accounting of changes expected for

that year

• Network Assessment – Once every 5 yearsDetailed evaluation of networks and objectives

Requirements: Required by new monitoring rule

[40 CFR Part 58.10(d)]Once every 5 yearsFirst assessment due July 1, 2010

EPA guidance document http://www.epa.gov/ttnamti1/files/ambient/pm25/datamang/network-assessment- guidance.pdf

Network Assessment Step 1: Prepare a Regional

Description Topography •Climate •Population •Demographic trends •Major emissions sources •Current air quality conditions

Additional Steps: Perform situational analyses

demographic shifts, density or sparseness of

existing networks, New findings on health

impacts Political factors

Resources

GIS Simple displays can be made using

GoogleEarth or Google Maps. • Statistical software and database

packages allow you to organize, manipulate, create, analyze, and display data. These packages include Microsoft Excel and Access, and tools from ITEP/TAMS

Data Analysis Tools from TAMS Center:

Resources EPA AirData offers yearly summaries of

U.S. air pollution data extracted from EPA's air pollution databases. Includes emissions and ambient monitoring.

• EPA AIRNow-Tech offers AIRNow observational data. Navigator tool is a customizable, air quality GIS tool that allows you to display site information with multiple geographic, pollutant, and meteorological features.

Data tool allows you to create personalized site lists, access predefined queries, and download AIRNow observational data.