The document outlines updates to the New Source Performance Standards (NSPS) for grain elevators, specifically Subpart DD and the proposed Subpart DDA. It addresses requirements for particulate matter emissions, applicability based on storage capacity, and clarifies definitions and standards for temporary and permanent storage. Key points include compliance monitoring, reporting obligations, and next steps regarding public comments and final rule preparation.

1. Midwest Environmental Compliance
Conference
Overland Park, KS – May 13, 2016
New Source Performance
Standards for Grain Elevators -
Updates

2. Senior Consultant, Manager
of Tellevate’s Training
Services
– Certified environmental and
management systems auditor
– Previous experience as a
Regulatory Inspector and
Compliance Assistance Provider
– 20+ years environmental and
auditing experience
Areas of expertise:
• Environmental
compliance
program support
• Air quality
compliance
• Multi-media
compliance
auditing
• Management
systems
• Environmental
training
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Melissa Ellis, CPEA

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40 CFR Part 60 New Source
Performance Standard (NSPS)
Subpart DD for Grain Elevators
NSPS Subpart DD for Grain Elevators
• Criteria pollutant - Particulate Matter
(PM)
• Best System of Emission Reduction
(BSER)
• History
• Promulgated 1978
• Reviewed 1984 & amended in 1988,
1989, and 2000
• Proposed amendments 7/9/2014

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Who is subject?
NSPS Subpart DD - Applicability
• Grain Terminal Elevator
• >2.5 M bushel permanent storage capacity
• Grain Storage Elevator
• >1.0 M bushel permanent storage capacity
• Constructed, modified or reconstructed
after 8/3/1978

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Particulate Matter (PM) Standards
NSPS Subpart DD - Requirements
• Dryers – Column & Rack
• 0% opacity
• Process Emissions
• PM < 0.01 gr/dscf & 0% opacity
• Fugitive Emissions
• Truck/rail unloading and rail loading < 5%
opacity
• Grain handling 0% opacity
• Truck loading < 10% opacity
• Barge/ship loading < 20% opacity

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PM Standards
NSPS Subpart DD - Requirements
• Barge/ship unloading
• Enclosed unloading leg
& ventilation to control
device
• Air ventilated > 40
ft3/bu
• Or, approved emission
control from
Administrator

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7/9/2014 Proposed
Amendments
NSPS Subpart DD - Amendments
• Clarify and revise definitions
• Grain unloading station
• Grain loading station
• Barge/ship unloading
• Clarify that where the aspiration of the
casing provides dust control at the boot of
the conveyor and receiving hopper is not
used – needs to be enclosed

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Applicability of Temporary
Storage
Temporary VS Permanent Storage
• 11/21/2007: EPA letter to Grain &
Feed
• Temporary storage with permanent
foundations and sidewalls = permanent
• 7/1/2014: EPA letter to Grain & Feed
• Rescinded 11/21/2007 letter
• Temporary not included in 1978 rule
evaluation

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40 CFR Part 60 New Source
Performance Standard (NSPS) Subpart
DD for Grain Elevators
NSPS Subpart DDa – “New” Grain
Elevators
• Proposed 7/9/2014
• Grain Storage Elevators & Grain
Terminal Elevators (same as Subpart
DD)
• Commence construction, modification, or
reconstruction after 7/9/2014

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New Definitions
NSPS Subpart DDa Proposal
• Permanent storage capacity
• Two calculations for known and unknown
throughput
• Takes into account temporary storage
• Temporary storage facility
• Asphalt, concrete, or other improved base
• Rigid, self-supporting sidewalls
• Aeration
• Covering or tarp

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New Definitions
NSPS Subpart DDa Proposal
• Grain loading station
• Grain unloading
station
• Wire screen column
dryer
• En-masse drag
conveyor
• Portable equipment

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PM Standards
NSPS Subpart DDa Proposal
• Maintain Subpart DD for rack & column
dryers
• Add provision for wire screen column
dryers
• Clarify barge/ship unloading station
requirements
• Limit opacity to 10% for some barge/ship
unloading
• Clarify applicability for equivalency
determination

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PM Standards
NSPS Subpart DDa Proposal
• Add requirement that unloading and grain
handling at temporary storage facilities
that do not use portable equipment meet:
• 0.01 gr/dscf
• < 5% opacity for truck unloading
• 0% opacity for grain handling
• Standards apply at all times including
periods of startup, shutdown, &
malfunction

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Test Methods and Procedures
NSPS Subpart DDa Proposal
• Annual opacity
testing for each
limit & facility
• PM testing every
60 months for
each limit &
facility

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Reporting & Monitoring
NSPS Subpart DDa Proposal
• Test results submitted within
60 days using Compliance
and Emissions Data
Reporting Interface (CEDRI)
• Fabric Filter/Baghouse
inspections every 6 months
• Weekly visible emissions
checks

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Recordkeeping
NSPS Subpart DDa Proposal
• Total storage capacity for each facility
(excluding temporary)
• Storage capacity of temporary facilities
• Excess emission event calculations
• Inspections/emission checks and
corrective actions
• Testing results
• Type of grain processed during test

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Wait for the final rule…
Next Steps
• EPA extended public comment period
45 days to 12/22/2014
• Check EPA’s website for updates:
https://www.epa.gov/stationary-
sources-air-pollution/grain-elevators-
new-source-performance-standards-
nsps#additional-resources
• Prepare to comply with new
requirements

18. QUESTIONS?
Melissa Ellis
402.613.3776
mellis@tellevate.com
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