2011 nata review n.
Skip this Video
Loading SlideShow in 5 Seconds..
2011 NATA Review PowerPoint Presentation
Download Presentation
2011 NATA Review

Loading in 2 Seconds...

play fullscreen
1 / 43

2011 NATA Review - PowerPoint PPT Presentation

  • Updated on

2011 NATA Review. Agenda. Region 9 Introduction – Ken Davidson Goals and features of NATA – Madeleine Strum Modeling Emissions Risk Schedule for NATA – Madeleine Strum Review – Madeleine Strum Location of data Reports in EIS Comments on Nonpoint NATA – Madeleine Strum

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

2011 NATA Review

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
  • Region 9 Introduction – Ken Davidson
  • Goals and features of NATA – Madeleine Strum
    • Modeling
    • Emissions
    • Risk
  • Schedule for NATA – Madeleine Strum
  • Review – Madeleine Strum
    • Location of data
    • Reports in EIS
  • Comments on Nonpoint NATA – Madeleine Strum
  • ARBs Instructions for NATA – Chris Nguyen
key features of 2011 nata
Key Features of 2011 NATA


2011 NATA will be based on version 2 of the 2011 NEI.

Preliminary air quality and risk estimates are being calculated based on 2011 NEI v1 & released only to state/local agencies.

This will assist with state review (not public) of v1 and will allow for early feedback of 2011 NATA results.

Improvements to key source categories emissions/characterization, e.g., ports, oil and gas wells.

key features of 2011 nata1
Key Features of 2011 NATA


AERMOD: Dispersion model will be run for all air toxic pollutants to estimate pollutant concentrations at all US census tracts and blocks.

CMAQ: Multipollutant version will be run for the US (lower 48) at 12km grid resolution. Model currently includes about 40 air toxic pollutants.

Utilize gridded met data consistent with both CMAQ and AERMOD.

To best characterize ambient concentrations of directly emitted and secondarily formed air toxics, a hybrid approach that combines data from AERMOD, CMAQ and ambient measurements will be applied.

key features of 2011 nata2
Key Features of 2011 NATA

Risk Characterization:

Health benchmarks are consistent with those used in RTR rulemakings. Several benchmarks have been updated since 2005 NATA but none appear to be risk drivers.

Will continue to use 1991 IRIS unit risk value for formaldehyde. The IRIS review is ongoing.

Will continue to provide risk apportionment information (i.e., source, pollutants). This allows states to use NATA to focus their air toxics efforts.

2011 current schedule
2011 Current Schedule

2011 NEI V1 Released on public website on 9/30/13.


Have completed preliminary risk modeling of 2011 NEI V1 point sources.

Using AERMOD and 2011 WRF met data, we have developed facility level census block max cancer risks and noncancer hazards for each point source facility.

Expect to complete nonpoint source modeling within the next few weeks. (Except for CMV)

Maximum risk results for each facility are available for S/L/Ts to review on the password protected review site

Provided risk results as part of NEI review to help facilitate review and identify potential outliers and focus review on key emissions.

Inventory review geared towards S/L/T inventory and toxic staff but APMs may want to let Regional and S/L/T risk staff know of data availability

2011 NEI V1 review period ends 3/31/14

2011 current schedule cont
2011 Current Schedule (cont)

Remodel point/nonpoint/mobile with NEI V2 - Fall 2014

This will include both AERMOD and CMAQ modeling of NEI V2.

Develop NATA website and technical support document.

Begin S/L/T preview of all NATA risks results – Dec 2014

We expect the preview to be similar to earlier NATA S/L/T previews with state specific data, webinars, & communication materials

Expected public release date: Mar 2015


2011 NATA Current Milestones/Schedule

Key Milestones:

Point Source Risk Results (NEIV1) to S/L/Ts

Nonpoint Source Risk Results (NEIV1) to S/L/Ts

Start 2011 NATA S/L/T Preview

Public Release of 2011 NATA

NEI V1 Released

Sept 2013




Jan –Mar





Jan-Mar 2015

April 2015

2011 NATA S/L/T Preview

NEI V1 S/L/T Review

Develop NEI V2 (Final NATA Inventory)

2011 NATA Modeling (based on NEI V2)

Project Schedule:

nata point review

NATA / Point Review

Without Airports

nata risk review
NATA Risk Review
  • NATA Risk Criteria – risk thresholds to consider
    • Facility exceeds 10 in a million risk for cancer, and/or
    • Facility noncancer risk for any target organ group (respiratory, neurological, etc.) exceed a hazard quotient of 1
  • Review the NATA Facilities file for
    • Pollutant(s) at facility contributing to risk
    • Emissions values for all pollutants
    • Facility emission release points for these pollutants
      • Emission Release Point Type
      • Emission Release Point Parameters
      • Emission Release Point Lat/Lon
review files
Review Files
  • The password protected review files, and instruction sheets, are located at
    • http://www.epa.gov/ttn/chief/natareview/
    • Login: reviewer
    • Password: 2011nata
    • Not for public review
  • Website contains two sets of reviews
    • Point, no airports
    • TRI
review example
  • Recology Grover Environmental Products
  • EIS 15843311; Agency ID 3914307709
  • Facility: Location: Various Specified Locations, SJVUAPCD, CA, 00000
  • Lat/Lon – 37.946481, -121.316289
  • Top 20 High Risk Facility in Nation

2. Max pollutant cancer and

non-cancer risks

1. First Filter on the Program System

Code for California - CARB


Release Point Types

1 = Fugitive

2 = Vertical

3 = Horizontal

4 = Goose Neck

5 = Vertical with Rain Cap

6 = Downward-facing vent


If parameters are not provided for

fugitive releases, then defaults are

used for modeling.

process level
Process Level
  • The spreadsheet provides release point emissions.
  • Process level emissions may be seen either individually on the Gateway, or
  • Emissions Process Report
    • Gateway Reports
      • Request Reports
      • Emission Summaries
      • By Facility
      • Report Type: Emissions Process
      • Dataset: 2011 NEI v1 with biogenics
      • Pollutant: Active HAPS
      • Either select the State “CA” OR the individual Counties.
      • Select “Request Download”
    • Pick up reports on the Gateway under Report Downloads
      • Reports run every 15 minutes.





Type in “2011 nei” in the search

box. Then select.


You may select a particular pollutant

by using the search box. Or you may

select the pre-selected buttons such

as “All Active”.


Next select your geographic region. Either

select your State OR you may select individual

counties under Counties. Do not select both.


There are additional filters which can be

used to refine your report such as SCC or NAICs.

Next select “Request Download”





Summary reports are run every 15 minutes. A “x”(1) indicates that the

report has not been run. The magnifying glass (2) expands to show the

report parameters. When the report is ready for download you will

see a page icon (3) which when click will allow you to download the report

In .csvformat.

emission process report
Emission Process Report
  • CA Emission Process Report with data source
what should be reviewed
What should be reviewed?
  • Emissions
    • Are they correct?
  • Release Points
    • Type
      • Fugitive or Stack
    • Parameters (if stack)
      • Height, Diameter, Temp, Exit Gas Flow Rate or Velocity.
    • Location
      • Facility
      • Release Points
  • Facilities
    • Would you expect the facility to be high risk?
    • Are there facilities which you believe are high risk but appear as very low risk in the table?
nata tri review1
  • File contains list of facility-pollutant combinations with HIGH risk based on 2011 Toxic Release Inventory
  • Emissions missing from EIS (2011 v1)
    • EIS facility matched missing these high risk pollutants
    • Cannot find a matching facility in EIS.
  • Dependent on your comments, facilities/TRI emissions may be included in 2011 NEI v2 and NATA
nonpoint review
Nonpoint Review
  • Comments
  • Will be posted to the same password protected website this week
  • Comments due by 3/31/2014
  • Any questions may be referred to:
      • Ron Ryan, ryan.ron@epa.gov 919-541-4330
      • Sally Dombrowski, dombrowski.sally@epa.gov, 919-541-3269
arb additional notes
ARB - Additional Notes
  • EIS Data were downloaded by the ARB
  • Agency ID has been disaggregated into COABDIS
  • Contact tnguyen@arb.ca.gov
  • Contact districts’ liaisons for specific emissions inventory data
  • Districts’ data will be emailed
  • Update emissions by device, by process
  • Update Stack Parameters:
    • STKHT
    • GT
    • GF or GV
  • Submit a Transaction Format File