View
6
Download
0
Category
Preview:
Citation preview
AmbientAirPlanAppendixDModification 9/19/2016
APPENDIX D
Site Selection for DRR Monitoring Near the Lhoist – Montevallo, Alabama Location
AmbientAirPlanAppendixDModification 9/19/2016
Site Selection for DRR Monitoring Near the Lhoist – Montevallo, Alabama Location
The site chosen to meet the Data Requirements Rule for the affected facility, Lhoist – Montevallo is
described below. Included is a site description and the report of modelling used to support the placement
of the monitor. The site selected is near the main facility entrance along Highway 25 to the northwest of
the plant. The site will be referred to as Hwy25‐west. This site is in Shelby County in the Birmingham‐
Hoover MSA.
The ADEM Air Division has reviewed modeling associated with the Lhoist‐Montevallo facility for the
placement of a SO2 monitor to support compliance with the 1‐hour SO2 NAAQS. The modeling followed
recommendations outlined in EPA’s Modeling Technical Assistance Document (TAD). The ADEM Air
Division agrees that the modeling was performed consistent with the TAD.
In addition, staff from the Air Division, the Air Assessment Unit, and US EPA Region 4 visited the facility to
determine if the proposed site would meet 40 CFR 58, Appendix E probe siting criteria. ADEM found that
there are no obstructions or other influences that will keep the site from meeting Appendix E
requirements for probe siting.
According to Appendix D and the TAD the monitor will be classified as middle scale since it is
approximately 200 meters from the source and the objective will be Highest Concentration.
The monitor will be operated by a Lhoist contactor as part of the ADEM Primary Quality Assurance
Organization (PQAO) following the ADEM QAPP. The ADEM QAPP is being modified to include industry
monitoring and specifically for this DRR monitor. The QAPP will be submitted to US EPA Region 4 – SESD
to be approved prior to the start monitoring. Lhoist specific SOPs will be submitted for ADEM and EPA
approval no later than 6 months after the start of monitoring. Monitoring and data submittal will meet
the quality assurance requirements of 40CFR58 A. A reference or equivalent method will be used monitor
sulfur dioxide as required by 40 CFR 58, Appendix C. The monitor will continuously measure sulfur dioxide
in the ambient air and will report 1‐hour averages and 5‐minute averages to EPA’s Air Quality System
(AQS) database.
In summary, the proposed site and monitoring activities will meet the requirements of 40 CFR part 58,
Appendices A, B, C, D and E with the monitoring objective of Highest Concentration.
AmbientAirPlanAppendixDModification 9/19/2016
Lhoist North America of Alabama, LLC > Montevallo Plant 01‐117‐9001 7444 State Hwy 25 Latitude: 33.0928 Calera, Alabama 35040 Longitude: ‐86.8072 Shelby County
AERIAL PHOTOGRAPH ¼ mile radius
Pollutant Scale
Type
Monitoring Objective/CBSA
Meth
od
Schedule
NAAQS
Proposed Start Date
Comment
SO2 M S Highest Concentration – SO2 DRR / Birmingham‐Hoover MSA
P C Y 1/1/2017
AmbientAirPlanAppendixDModification 9/19/2016
Proposed Monitor Location Facing North Proposed Monitor Location Facing South
Proposed Monitor Location Facing East Proposed Monitor Location Facing East
Proposed Site Monitoring Specifications
Monitor Height of inlet
Distance of inlet from supporting structure
Distance of probe or inlet from trees
Distance of probe or inlet from dripline of trees
Distance of probe or monitor from roadway
Type of ground cover around site
Probe material
Bell Housing Material
SO2 ~4m >1m >50m >50m >20m Grass and pavement
Teflon Teflon
P= pulsed fluorescent monitor S= SLAMS C= Continuous Operation M= Middle Scale
Recommended