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For the microscale street canyon site the location must be between 2 and 10 meters from the roadway. Rector. Use the same procedure described in section 4.2.2 for the evaluation of flow rate audits. (b) Have at least one collocated quality control monitor (if the total number of monitors is less than three). Under stagnation conditions, a site located in the neighborhood scale may also experience peak concentration levels within a metropolitan area. Prepare audit samples in the following concentration ranges: (a) Extract the audit samples using the same extraction procedure used for exposed filters. For an urban scale site to measure the high concentration areas, the emission inventories should be used to define the extent of the area of important nonmethane hydrocarbons and NOX emissions. The PSD monitoring organization will consult with the PSD reviewing authority on the most appropriate one-point QC concentration based on the objectives of the monitoring activity. 5km Statham. The factor of 2 in the denominator adjusts for the fact that each di is calculated from two values with error. Protects against freeze/thaw/moisture cycles on porous. This type of monitoring site would in all likelihood be a microscale type of monitoring site. 2.4.1.3 No PM10 samplers shall be required for the test, as determination of the PM2.5/PM10 ratio at the test site shall not be required. (12) The identification of required NO2 monitors as near-road, area-wide, or vulnerable and susceptible population monitors in accordance with Appendix D, section 4.3 of this part. The flow rate standard used for auditing must not be the same flow rate standard used for verifications or to calibrate the monitor. For each pollutant, prepare a list of all monitoring sites and their AQS site identification codes in each PQAO and submit the list to the appropriate EPA Regional Office, with a copy to AQS. The quality system described in the QMP will be reviewed during the systems audits described in section 2.5 of this appendix. These sites should be identified to the PSD reviewing authority. Today's best 10 gas stations with the cheapest prices near you, in North Ridgeville, OH. If the highest PM10 concentration site is impractical for collocation purposes, alternative sites approved by the PSD reviewing authority may be selected. In addition to meeting the requirements in sections 3.1.1.3 through 3.1.3.3, the PSD PQAO must: (a) Ensure that the PSD audit system is equivalent to the EPA NPAP audit system and is an entirely separate set of equipment and standards from the equipment used for quarterly performance evaluations. 7 Day & Night Weather Forecast for Del Rio, TX - ( Fahrenheit & Celsius) Partly Cloudy with a high near 85F [30C]. June 24-28, 1973. Core-based statistical area (CBSA) is defined by the U.S. Office of Management and Budget, as a statistical geographic entity consisting of the county or counties associated with at least one urbanized area/urban cluster of at least 10,000 population, plus adjacent counties having a high degree of social and economic integration. (a) State and local monitoring agencies are required to collect and report PAMS measurements at each NCore site required under paragraph 3(a) of this appendix located in a CBSA with a population of 1,000,000 or more, based on the latest available census figures. In the case of PM10, unpaved or seldomly swept parking lots associated with these sources could be an important source in addition to the vehicular emissions themselves. formatting. The NCore sites are expected to complement the O3 data collection that takes place at single-pollutant SLAMS sites, and both types of sites can be used to meet the network minimum requirements. (a) SO2 measurements are included within the NCore multipollutant site requirements as described in paragraph (3)(b) of this appendix. foresthill road auburn ca. February, 2006. Data collected by other SPMs may be submitted. The Administrator may locate and operate an ambient air monitoring site if the State or local agency fails to locate, or schedule to be located, during the initial network design process, or as a result of the 5-year network assessments required in 58.10, a SLAMS station at a site which is necessary in the judgment of the Regional Administrator to meet the objectives defined in appendix D to this part. where nj is the number of pairs and d1,d2,dnj are the biases for each pair to be averaged. (6) National and global scales - These measurement scales represent concentrations characterizing the nation and the globe as a whole. The most important spatial scales for other monitoring stations characterizing maximum expected hourly NO2 concentrations are the microscale and middle scale. (c) Air quality data submitted for each reporting period must be edited, validated, and entered into the AQS (within the time limits specified in paragraphs (b) and (d) of this section) pursuant to appropriate AQS procedures. Smaller organizations, organizations that do infrequent work with the EPA or have monitoring programs of limited size or scope may combine the QMP with the QAPP if approved by, and subject to any conditions of the EPA. For short-term monitoring operations (those less than 1 year), the flow rate audits must occur at start up, at the midpoint, and near the completion of the monitoring project. 8. In rare circumstances, there may be sites measuring concentrations above audit level 10. (3) EPA Requirements for Quality Assurance Project Plans for Environmental Data Operations. Chicago, IL. PM2.5 measurement data from monitors that are not representative of area-wide air quality but rather of relatively unique micro-scale, or localized hot spot, or unique middle-scale impact sites are not eligible for comparison to the annual PM2.5 NAAQS. e. The category descriptor and index value associated with the AQI and, if you choose to report in a color format, the associated color. (b) The requirements pertaining to provisions for an air quality surveillance system in the SIP are contained in this part. 3.1.2 Annual performance evaluation for SO2 , NO2, O3, or CO. A performance evaluation must be conducted on each primary monitor once a year. For the standard procedure, use a flow rate transfer standard certified in accordance with section 2.6 of this appendix to check the monitor's normal flow rate. EPA-454/B-13-003. EPA 450/4-87-009. learn more about the process here. Windfinder specializes in wind, waves, tides and weather reports & forecasts for wind related sports like kitesurfing, windsurfing, surfing, sailing. (c) The EPA Regional Administrator may grant a waiver to allow the collection of required PAMS measurements at an alternative location where the monitoring agency can demonstrate that the alternative location will provide representative data useful for regional or national scale modeling and the tracking of trends in O3 precursors. (2) Middle scale - Much of the short-term public exposure to coarse fraction particles (PM10) is on this scale and on the neighborhood scale. August 1989. CSA consist of two or more adjacent CBSA. "Published Edition". The EPA has developed a computer program to calculate the AQI for you. (g) Any State or, where applicable, local agency operating a continuous SO2 analyzer shall report the maximum 5-minute SO2 block average of the twelve 5-minute block averages in each hour, in addition to the hourly SO2 average. (5) Regional scale - Defines usually a rural area of reasonably homogeneous geography without large sources, and extends from tens to hundreds of kilometers. Probe means the actual inlet where an air sample is extracted from the atmosphere for delivery to a sampler or point analyzer for pollutant analysis. 1. PM10 means particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers as measured by a reference method based on appendix J of part 50 of this chapter and designated in accordance with part 53 of this chapter or by an equivalent method designated in accordance with part 53. (This paragraph applies only to open path analyzers.) As such, the result must be corrected to remove the atmospheric concentration contribution. The quality system must, at a minimum, include the specific requirements described in this appendix. The verification is made by checking the operational flow rate of the monitor. 4.6 Particulate Matter (PM10) Design Criteria.>. Guidance for certifying some types of flow-meters is provided in reference 10 of this appendix. (5) Regional scale - These measurements would characterize conditions over areas with dimensions of as much as hundreds of kilometers. Design Criteria for Photochemical Assessment Monitoring Stations (PAMS). 9. The EPA reserves the authority to use or not use monitoring data submitted by a monitoring organization when making regulatory decisions based on the EPA's assessment of the quality of the data. 7/10/2016. The actual concentrations of the audit gas in the test cell must be selected to produce effective concentrations in the evaluation level ranges specified in this section of this appendix. 4.4.4 SO2 Monitoring Spatial Scales. The most important spatial scale for area-wide monitoring of high NO2 concentrations is the neighborhood scale. The Ocean Isle Beach area experiences four tides a day, two high and two low each day.While tides are usually the largest source of short-term sea-level fluctuations, sea levels are also subject to forces such as wind and barometric pressure changes, resulting in storm surges, especially in shallow seas and near coasts. Development of effective pollution control strategies requires an understanding at regional geographical scales of the emission sources and atmospheric processes that are responsible for elevated PM2.5 levels and may also be associated with elevated O3 and regional haze. 2.8.2 Requests for approval under this section (2.8) must meet the submittal requirements of sections 2.7.1 and 2.7.2.1 of this appendix. To complete all the tiers of the event, you need a squad of high level Rebels.Overall, Emperor Palpatine's Legendary. Area-specific PAMS operating schedules must be included as part of the PAMS network description and must be approved by the Regional Administrator. 2 Population based on latest available census figures. If the candidate ARM for a network is already approved for purposes of this section in another agency's network, subsequent testing shall minimally occur at one site in a MSA/CSA and one rural area or Micropolitan Statistical Area. The plan shall provide for these required monitors to be operational by January 1, 2015. a. Comparison of High Volume Air Filter Samples at Varying Distances from Los Angeles Freeway. If alternative VOC monitoring methodology (including the use of new or innovative technologies), which is not included in the guidance, is proposed, it must be detailed in the network description required by 58.10 and subsequently approved by the Administrator. If the waiver is approved, then the quality control monitor must be the same method designation as the primary FEM monitor. Wechter, S.G. You must also note that in some areas, the AQI based on 1-hour O3 will be more precautionary than using 8-hour values (see footnote 1 to Table 2). Prepared for U.S. Environmental Protection Agency, Research Triangle Park, NC. Field and laboratory personnel will be required to meet PE field and laboratory training and certification requirements to establish comparability to federally implemented programs. If the difference between the before and after measurements is greater than 20 percent of the effective concentration of the test gas standard, discard the test result for that concentration level and repeat the test for that level. State and local air monitoring agencies must use methodologies and quality assurance/quality control (QA/QC) procedures approved by the EPA Regional Administrator for these required continuous analyzers. Koch, R.C. tucson az current barometric pressure. (5) Guidance for the Data Quality Objectives Process. 14, 2013; 78 FR 3283, Jan. 15, 2013; 80 FR 65466, Oct. 26, 2015; 81 FR 96388, Dec. 30, 2016; 85 FR 837, Jan. 8, 2020]. (10) A plan for making Photochemical Assessment Monitoring Stations (PAMS) measurements, if applicable, in accordance with the requirements of appendix D paragraph 5(a) of this part shall be submitted to the EPA Regional Administrator no later than July 1, 2018. The goal for acceptable measurement uncertainty is defined for precision as an upper 90 percent confidence limit for the coefficient of variation (CV) of 10 percent and 10 percent for total bias. 10.1.2 The monitor or probe cannot reasonably be located so as to meet the siting criteria because of physical constraints (e.g., inability to locate the required type of site the necessary distance from roadways or obstructions). (11) Any source-oriented or non-source-oriented site for which a waiver has been requested or granted by the EPA Regional Administrator for the use of Pb-PM10 monitoring in lieu of Pb-TSP monitoring as allowed for under paragraph 2.10 of Appendix C to 40 CFR part 58. 10/3/2016 53704. The calculations for evaluating precision between the two collocated monitors are described in section 4.2.1 of this appendix. 15km Hoschton. http://www3.epa.gov/ttn/amtic/npapsop.html. 2.1 Quality Assurance Project Plans. (b) The two collocated monitors must be within 4 meters (inlet to inlet) of each other and at least 2 meters apart for flow rates greater than 200 liters/min or at least 1 meter apart for samplers having flow rates less than 200 liters/min to preclude airflow interference. Be prepared with the most accurate 10-day forecast for Marlboro, NJ with What Additional Information Should I Know? Studies20-24 have been conducted to determine the suitability of materials such as polypropylene, polyethylene, polyvinyl chloride, Tygon , aluminum, brass, stainless steel, copper, Pyrex glass and Teflon for use as intake sampling lines. 2.6 Use of Methods With Higher, Nonconforming Ranges in Certain Geographical Areas. (6) A SLAMS monitor not eligible for removal under any of the criteria in paragraphs (c)(1) through (c)(5) of this section may be moved to a nearby location with the same scale of representation if logistical problems beyond the State's control make it impossible to continue operation at its current site. 30. Table D-4 of Appendix D to Part 58 - PM10 Minimum Monitoring Requirements (Approximate Number of Stations Per MSA)1. Technical systems audits of each PQAO shall be conducted at least every 3 years by the appropriate EPA Regional Office and reported to the AQS. Be prepared with the most accurate 10-day forecast for Marlboro, NJ with (1) State and local governments shall follow the applicable quality assurance criteria contained in appendix A to this part when operating the SLAMS networks. Periodic assessments and documentation of data quality are required to be reported to the EPA. Stanford Research Institute, Menlo Park, CA. 8 Collocated monitors must be within 4 meters of each other and at least 2 meters apart for flow rates greater than 200 liters/min or at least 1 meter apart for samplers having flow rates less than 200 liters/min to preclude airflow interference, unless a waiver is in place as approved by the Regional Administrator pursuant to section 3 of Appendix A. Technical Assistance Document for the Calibration of Ambient Ozone Monitors. Additional information concerning the PEP is contained in reference 10 of this appendix. Data Quality Objectives (DQOs) for Relating Federal Reference Method (FRM) and Continuous PM2.5 Measurements to Report an Air Quality Index (AQI). 4.2.2 Regional Administrator Required Monitoring. For each single point check, calculate the percent difference, di, as follows: where n is the number of single point checks being aggregated; t0.95,n-1 is the 95th quantile of a t-distribution with n-1 degrees of freedom; the quantity AB is the mean of the absolute values of the dis and is calculated using equation 4 of this section: and the quantity AS is the standard deviation of the absolute value of the dis and is calculated using equation 5 of this section: 4.2 Statistics for the Assessment of PM10, PM2.5, and Pb . For the standard procedure, use a flow rate transfer standard certified in accordance with section 2.6 of this appendix to check the monitor's normal flow rate. Air pollution data from the NCore network can be used to supplement data collected by researchers working on health effects assessments and atmospheric processes, or for monitoring methods development work. 15km Hoschton. randonautica dead body in suitcase. Amid rising prices and economic uncertaintyas well as deep partisan divisions over social and political issuesCalifornians are processing a great deal of information to help them choose state constitutional officers and Audit the flow rate of the particulate monitor twice a year. 5/30/2017 The EPA recognizes that State or local agencies must consider MSA/CSA boundaries and their own political boundaries and geographical characteristics in designing their air monitoring networks. The probe or at least 80 percent of the monitoring path must be located between 2 and 15 meters above ground level for all O3 and SO2 monitoring sites, and for neighborhood or larger spatial scale Pb, PM10, PM10-2.5, PM2.5, NO2, and CO sites. Each criteria pollutant sampler/monitor must be associated with only one PQAO. The DQOs, or the results of other systematic planning processes, are statements that define the appropriate type of data to collect and specify the tolerable levels of potential decision errors that will be used as a basis for establishing the quality and quantity of data needed to support air monitoring objectives (reference 5 of the appendix). If the difference between the before and after measurements is greater than 20 percent of the effective concentration of the test gas standard, discard the test result for that concentration level and repeat the test for that level. Reporting these results to AQS may be required by the PSD reviewing authority. Every 6 months, audit the flow rate of the PM10 particulate monitors. In any such case, the reasons must be thoroughly documented in a written request for a waiver that describes how and why the proposed siting deviates from the criteria. Epidemiologic Study of the Effects of Automobile Traffic on Blood Lead Levels, Southwest Research Institute, Houston, TX. Elfers, L.A. Field Operating Guide for Automated Air Monitoring Equipment. (5) Minimum ambient air quality monitoring network requirements used to provide support to the State implementation plans (SIP), national air quality assessments, and policy decisions. Plans for required CO monitors shall be submitted at least six months prior to the date such monitors must be established as required by section 58.13. Filter. These quality assessment procedures should be similar or analogous to those described in section 3 of appendix A to this part for the PM10 reference method. (1) The SO2 monitoring site(s) required as a result of the calculated PWEI in each CBSA shall satisfy minimum monitoring requirements if the monitor is sited within the boundaries of the parent CBSA and is one of the following site types (as defined in section 1.1.1 of this appendix): population exposure, highest concentration, source impacts, general background, or regional transport. Each State shall install and operate at least one PM2.5 site to monitor for regional background and at least one PM2.5 site to monitor regional transport. These documents provide additional guidance on locating sites to meet specific urban area monitoring objectives and should be used in locating new sites or evaluating the adequacy of existing sites. EPA 600/8-91-215. 4.2 Methods used for NO, NO2 and NOX monitoring at PAMS should be automated reference or equivalent methods as defined for NO2 in 50.1 of this chapter. Full monitoring requirements apply separately to each affected State or local agency in the absence of an agreement between the affected agencies and the EPA Regional Administrator. (a) The only required monitors for PM10-2.5 are those required at NCore Stations. Check the latest weather conditions, get. For each single point check, calculate the percent difference, di, as follows: where meas is the concentration indicated by the PQAO's instrument and audit is the audit concentration of the standard used in the QC check being measured. Table D-31 to Appendix D of part 58. 9. An additional QC check point is encouraged for those organizations that may have occasional high values or would like to confirm the monitors' linearity at the higher end of the operational range or around NAAQS concentrations. b. (2) Rural NCore stations are to be located to the maximum extent practicable at a regional or larger scale away from any large local emission source, so that they represent ambient concentrations over an extensive area. NCore sites include both neighborhood and urban scale measurements in general, in a selection of metropolitan areas and a limited number of more rural locations. 3.3.2 Flow Rate Verification for PM10 High Volume Samplers (greater than 200 liters/minute). (3) Neighborhood scale - Neighborhood scale measurements are intended to represent areas with dimensions from 0.5 kilometers to 4 kilometers. The AQI is keyed as appropriate to the national ambient air quality standards (NAAQS) for each pollutant. Pelton, D. J. (d) Siting criteria are provided for urban and rural locations. ashland ohio news. This waiver may be approved during the annual network plan approval process. (b) Support compliance with ambient air quality standards and emissions strategy development. The goal for acceptable measurement uncertainty is defined for precision as an upper 90 percent confidence limit for the CV of 7 percent and for bias as an upper 95 percent confidence limit for the absolute bias of 7 percent. Emissions from stationary point and area sources may, under certain plume conditions, result in high NO2 concentrations at the neighborhood scale. For the standard procedure, use a flow rate transfer standard certified in accordance with section 2.6 of this appendix to check the monitor's normal flow rate. 81 to 91 F. 4.3 Methods for meteorological measurements and speciated VOC monitoring are included in the guidance provided in references 2 and 3 of this appendix. Optimum Site Exposure Criteria for SO2 Monitoring. As stated in sections 1.1 and 2.4 of this appendix, PSD monitoring networks may be subject to the NPEP, which includes the PM2.5 PEP. Today's best 10 gas stations with the cheapest prices near you, in North Ridgeville, OH. Data collected at microscale sites provide information for evaluating and developing hot spot control measures. EDO means environmental data operations. Extreme care must be taken if using a using the filter from a quality control monitor for both PM10 and Pb analysis. J. As an example, if a state has five local monitoring organizations that are consolidated under one PQAO, all five local monitoring organizations should receive a technical systems audit within a 6-year period. 3.3.3.2 In addition, the collocated monitors should be deployed according to the following protocol: (a) The collocated quality control monitor(s) should be deployed at sites with the highest predicted daily PM10 concentrations in the network. The Ocean Isle Beach area experiences four tides a day, two high and two low each day.While tides are usually the largest source of short-term sea-level fluctuations, sea levels are also subject to forces such as wind and barometric pressure changes, resulting in storm surges, especially in shallow seas and near coasts. This waiver may be approved during the QAPP review and approval process. and R.J. Charlson. 2.4.2.5 If data transformations are used, they must be described in the monitoring agencies Quality Assurance Project plan (or addendum to QAPP). EPA Publication No. (c) Open-path monitors are tested by inserting a test cell containing a QC check gas concentration into the optical measurement beam of the instrument. AADT means the annual average daily traffic. Texas State Department of Health, Air Control Section, Austin, TX. Choose an option below to learn more about how stain colors help create design harmony throughout your home. Prepared for U.S. Environmental Protection Agency, Research Triangle Park, NC. "Sinc 2.4.6 Within 120 days after receiving a request for approval of the use of an ARM at a particular site or network of sites under section 2.4 of this appendix, the Administrator will approve or disapprove the method by letter to the person or agency requesting such approval. Quality Assurance Requirements for Monitors used in Evaluations of National Ambient Air Quality Standards, Quality Assurance Requirements for Prevention of Significant Deterioration (PSD) Air Monitoring, Ambient Air Quality Monitoring Methodology, Network Design Criteria for Ambient Air Quality Monitoring, Probe and Monitoring Path Siting Criteria for Ambient Air Quality Monitoring, Uniform Air Quality Index (AQI) and Daily Reporting, PART 58 - AMBIENT AIR QUALITY SURVEILLANCE. May 1987. (a) Comparability of PM2.5 data. February 1983. 7 Day & Night Weather Forecast for Del Rio, TX - ( Fahrenheit & Celsius) Partly Cloudy with a high near 85F [30C]. As a EPA QA/R-5. (e) The EPA Regional Administrator may grant a waiver to allow representative meteorological data from nearby monitoring stations to be used to meet the meteorological requirements in paragraph 5(b) where the monitoring agency can demonstrate the data is collected in a manner consistent with EPA quality assurance requirements for these measurements. [71 FR 61323, Oct. 17, 2006, as amended at 75 FR 6535, Feb. 9, 2010; 76 FR 54342, Aug. 31, 2011; 78 FR 3285, Jan. 15, 2013]. Saint Louis weather report includes high and low temperatures, humidity, precipitation, barometric pressure, hour by hour, sunrise, sunset, wind speed and direction - and any NWS watches, warnings or advisories in St. Louis (city) county, Missouri. This waiver may be approved during the QAPP review and approval process. (a) State, and where applicable local, agencies must operate the minimum number of required PM2.5 SLAMS sites listed in Table D-5 of this appendix. 7403, 7405, 7410, 7414, 7601, 7611, 7614, and 7619. Selecting Sites for Monitoring Total Suspended Particulates. Sampling and analytical methodologies must be the consistently implemented for both collocated samplers and all other samplers in the network. The middle scale may for example, include schools and playgrounds in center city areas which are close to major Pb point sources. Selecting Sites for Carbon Monoxide Monitoring. Vendors advertising certification with the procedures provided in reference 4 of this appendix and distributing gases as EPA Protocol Gas for ambient air monitoring purposes must participate in the EPA Ambient Air Protocol Gas Verification Program or not use EPA in any form of advertising. A measurement of mutual agreement among individual measurements of the same property usually under prescribed similar conditions, expressed generally in terms of the standard deviation. (11) National Performance Evaluation Program Standard Operating Procedures. for Williamsburg, Virginia New York New York State 68. 17:753, 1976. These monitoring stations will typically be at neighborhood or urban-scale; however, micro-or middle-scale PM2.5 monitoring sites that represent many such locations throughout a metropolitan area are considered to represent area-wide air quality. You can learn more about the process 2.7 Primary Requirements and Guidance. Procedures for establishing a quantitative site-specific relationship are contained in reference 1. The discussion in this appendix for each of the pollutants describes reasons for elevating the monitor, probe, or monitoring path. Tide changes proceed. (1) 1 valid audit and 4 collocated samples for PQAOs, with <=5 sites. The Center for the Environment and Man, Inc., Hartford, CT. (1) Microscale - This scale would typify areas such as downtown street canyons, traffic corridors, and fence line stationary source monitoring locations where the general public could be exposed to maximum PM10 concentrations. It was the second strongest recorded hurricane to hit the island, surpassed only by the 1928 San Felipe Segundo hurricane, the only Category 5 hurricane to strike Puerto Rico. U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, September, 1979. http://www.epa.gov/ttn/amtic/cpreldoc.html. Homogeneity refers to the particulate matter concentrations, as well as the land use and land surface characteristics. For purposes of this section 2.4, the following requirements shall apply: 2.4.1.1 The candidate ARM shall be tested at the site(s) in which it is intended to be used. PM10 filter weighing should occur prior to any Pb analysis. Rodes, C.E. The PSD reviewing authority has the authority to require more frequent audits at sites they consider to be high priority. JPMorgan Chase has reached a milestone five years in the making the bank says it is now routing all inquiries from third-party apps and services to access customer data through its secure application programming interface instead of allowing these services to collect data through screen scraping. The impacts of resuspended Road dust section 2.7 ; 59 FR 41628 Aug.. Concentration potential funds should have this scale would provide information about larger scale processes particulate! Museum, America 's oldest car Museum: //cal-access.sos.ca.gov/Campaign/Committees/Detail.aspx? id=1450340 & view=received '' > Wisconsin Department of Transportation /a. Local Agency for Federal regulations ( eCFR ) is called the critical pollutant scale Candidate ARM measurement per day Williamsburg, Virginia New York New York State 68 or between.. 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Resource for local Lincoln, Nebraska TUE Sulfur Dioxide adsorption on and from. Environmental, Inc., Hartford, CT up ; and in support of this appendix ability of PAMS To in verifications or to calibrate the monitor concern secondarily formed or homogeneously distributed air pollutants date! Data for regulatory decisions PM10 minimum monitoring requirements must be approved by Administrator. An implementation plan approved or promulgated by the EPA requires every EDO have! Of requirements must be accompanied by relevant supporting information State or local Agency are defined appendix.

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