MEMORANDUM

Subject: Input data for final RIA (human health be nefits analysis) complete using BenMAPCE as part of the Ozone NAAQS review

Date: September, 2015

EPA placed into the docket (EPA

‐ HQ

‐ OAR

‐ 2013

‐ 0169) a DVD containing the input files used in the environmental Benefits Mapping and Analysis Program—Community Edition (BenMAPCE) to estimate the human health-related benefits estimates for ozone as part of the regulatory impact analysis (RIA) completed for the curre nt Ozone NAAQS review (excluding those data pre-loaded in the BenMAP-CE tool and documented in the user manual). 1 The files on the DVD include (a) inputs to the BenMAP model (Ben MAP-CE version 1.0.8) used to generate both health incidence estimates and associated dollar benefits associated with simulated changes in ozone associated with the Final Rule and (b) spreadsheets containi ng input data and calculations used in generating incidence- per-ton and dollar-per-ton based c obenefits for reductions in PM 2.5 associated with the Final Rule. The specific subd irectories (and associated files) docketed on the DVD include:

I. Files used to estimate oz one-related central benefits:

a) BenMAP-CE files : BenMAP-CE-related files associated with ozone-benefits simulations (including *.AQGXs, *.CFGXs, *.CFGRXs, *.APVXs and *. APVRXs) are included in the subdirectory titled <BenMAP files_ozone>. Most of these files include specification of (a) simulation year (2025 or 2038), (b) air metric (1hrmax or 8hrmax – used for modeling different health endpoints – see below) and (c) specificati on of the air quality scenarios evaluated (e.g., 75-70 – change in benefits associated with going from the current standard to an alte rnative standard of 70 - in cluding whether the scenario reflected full attainment “f” or partial a ttainment “p”). Specific details regarding individual file types include:

a. *.AQGXs: In creating air quality grids (*.AQGXs), we used the CMAQ 12km Nation coverage included in BenMAP . Note that the “...1hrmax...” .*.AQGX files contain the 1hr max values used in the long-term mortality simulations, while the “...8hrmax...” files contain the 8hrmax values used in modeling shortterm exposure endpoints. b. *.CFGX and *.CFGRXs: There are significantl y less of these files since, for most simulations EPA generated dollar benefits and for that reason, went all the through specification of *.APVXs and generation of *.APVRXs. *.CFGX and *.CFGRXs were only saved for simula tion runs where EPA only generated incidence estimates (mainly spec ific sensitivity analyses).

c. *.APVX and *.APVRXs: Note that the *.APVRX files including “...asthexacer_corrected...” in their file names reflect updated simulations

1 For example, we used pre-packaged baseline incidence an d prevalence rates as well as demographic data included in the public-release BenMAP-CE model in completing our be nefits estimates and consequently, those data inputs are not included in this docketing action.reflecting the modification in the method us ed to generate asthma exacerbations and respiratory HA for ozone (see sec tion 6.6.3.5 of the final ozone RIA). b) BenMAP-derived incidence and benefits estimates: The subdirectory <Core_and_supplemental_results _ozone> includes all of the BenMAP output files (outputted in csv format) which have been pul led into Excel files for ready access. This subdirectory includes both core, supplemental and sensitivity analys is results. Specific files include:

a. Core 8hrmax (short-term endpoint) estimat es: This file <8hrmax-summarytotalOzone_finalRIA> includes BenMAP core short-term morbidity and mortality results including inciden ce and dollar benefits.. b. Core and sensitivity analysis 1hrmax (long-term mortality) estimates: This file <1hrmax-summarytotal-Ozone_FinalRIA> includes core incidence and sensitivity-analysis related dollar benef it estimates generated for long-term ozone mortality.

c. Sensitivity analysis (threshold analysis for long-term mortality): These files <FinalRIA_2025_1hrmax_Thresh_75-70f> and <FinalRIA_2025_1hrmax_Thresh_75-65f>.contai n the estimates resulting from application of the range of thresholds c onsidered for long-term ozone respiratoryrelated mortality. d. Supplemental analyses (plots of distributi on of short-term mortality and baseline ozone levels): This file <8hr_2025_mor tality-bselineozone-PLOTS_finalRIA> contains data used in generating the pl ots (also included) of (a) short-term mortality against baseline ozone leve ls and (b) exposed population against baseline ozone levels.

e. Supplemental analyses (east-west and CA apportionment of core short-termmortality estimates): This file <E-WCA_ST_mortality_apportionment_finalRIA> includes estimates based on application of east-west regional and California apportionment of short-term mortality. Note, that in these files, the ro w attribute designates East (2), California (1) and West (3). f. Supplemental analyses (series of age-di fferentiated mortality based analyses): These files <2025_75-70-lifeyears> and <2025_75-65-lifeyears> include estimates of core short-term mortality by age range supports several supplemental analyses including (a) estimated reduction in life years lost, (b) distribution of mortality incidence reductions across age ranges, and (c) estimated reductions in baseline mortality incidence rates by age group.

II. Files used in ozone supplementa l analysis for worker productivity:

a) BenMAP-CE files : BenMAP-CE-related files associated with ozone-benefits supplemental analysis simulations (incl uding *.AQGXs, *.CFGXs, *.CFGRXs, *.APVXs and *.APVRXs) are included in the subdirectory titled <Core_and_supplemental_resu lts_ozone\Supplemental Analysis (Worker Productivity)>. Most of these files include specification of (a) simulation year (2025), (b) air metric (9hraverage) and (c) specification of the ai r quality scenarios evaluated. Specific details regarding individual f ile types include:a. *.AQGXs: In creating air quality grids (*.AQGXs), we used the CMAQ 12km Nation coverage included in BenMAP. b. *.CFGX and *.CFGRXs: We provide one file for each scenario.

c. *.APVX and *.APVRXs: As above, we pr ovide one file for each scenario.

III. Files used to estimate PM 2.5 -related benefits:

a) Excel spreadsheets (inputs and calculations for PM 2.5 cobenefits): Files in the subdirectory < Dollar_and_incidence_per_ton_P M> contain the dollar-per-ton values and NOx emissions reductions (together with the computati onal shell) associated with generating PM 2.5 cobenefits including incidence and dollar benefit reductions.

Point of contact: Zachary Pekar, U.S. EPA, Office of Air Quality Planning and Standards, email: pekar.zachary@epa.gov)