NSPS Notebook
Grain Elevators -  Subpart DD

Applicability: eCFR Subpart DD [ecfr.gov]

This subpart applies to:
  1. Grain terminal elevators and grain storage elevators that commence construction after Aug 3, 1978.
Affected facilities:
  1. Truck loading or unloading stations;
  2. Barge and ship loading or unloading stations;
  3. Railcar loading or unloading stations;
  4. Grain dryers;
  5. Grain handling operations.
Definition of "Grain terminal elevator"
  • Any grain elevator which has a permanent storage capacity of more than 2.5 million U.S. bushels, except those located at animal food manufacturers, pet food manufacturers, cereal manufacturers, breweries, and livestock feedlots.
Definition of "Grain storage elevator"
  • Any grain elevator located at any wheat flour mill, wet corn mill, dry corn mill (human consumption), rice mill, or soybean oil extraction plant which has a permanent storage capacity of 1 million bushels.

Modifications (by themselves) do not include:
  1. Addition of gravity loadout spouts to existing grain storage or grain transfer bins.
  2. Installation of automatic grain weighing scales.
  3. Replacement of motor and drive units driving existing grain handling equipment.
  4. Installation of permanent storage capacity with no increase in hourly grain handling capacity.
If permanent storage capacity increases over the applicability threshold (previous existing storage capacity below threshold), then only the affected facilities that were added or modified are subject to this subpart. Sources should document which affected facilities were added or modified due to the installation of storage capacity.
Known Sources in NDEQ Jurisdiction:
Date of Original Final Rule: 8/3/78
Amendments Dates: 10/17/2000 (65 FR 61759)
02/14/1989 (54 FR 6674)
11/05/1987 (52 FR 42434)
State Regulations: Title 129, Chapter 18, Section 001.19
Federal Regulations: 40 CFR 60.300
Related Rules:

NESHAP - 40 CFR Part 63

Subpart CCCC - Nutritional Yeast Manufacturing
Subpart GGGG - Solvent Extraction for Vegetable Oil Production
Subpart DDDDDDD - Prepared Feeds Manufacturing
Regulations and Federal Registers: eCFR Subpart DD [ecfr.gov]
FAQs, Fact Sheets, and Rule Summaries: Rule Flowchart - Texas CEQ [tceq.state.tx.us]

EPA determination related to permanent grain storage.(See attached file: 11-21-07 Response to National Grain & Feed Association0001.pdf)

EPA determinations related to expansions and capacity.
(See attached file: 1982 EPA applicability - grain storage expansion.pdf)
(See attached file: 2-2005- EPA capacity and expansion applicability.pdf)

SizeFile Name
99 KB 11-21-07 Response to National Grain & Feed Association0001.pdf
13 KB 1982 EPA applicability - grain storage expansion.pdf
19 KB 2-2005- EPA capacity and expansion applicability.pdf
Other Information and Resources:
Page Last Updated: 4/21/14