Grain and Dry Chemical Storage and Transfer
Grain and Dry Chemical Transfer and Storage Facility Equipment are used at facilities where grains and dry chemicals are received, stored and transferred for distribution or direct use. Grains and chemicals are unloaded from trucks, rail car or ships by conveyors, pneumatic transfer or bucket elevator into storage silos, hoppers or warehouses, from which the grains and dry chemicals are distributed or transferred to manufacturing process.
This equipment is typically found at breweries to store and transfer grains or at cement warehouses to store and distribute cements. Air contaminants emitted from Grain and Dry Chemical Transfer and Storage Facility Equipment include particulate matter and toxic air contaminants. Particulate matter emissions are controlled by enclosed transfer lines and by venting the silos, hopper or warehouses to baghouses or filter systems.
The information on this page will assist in the completion and submittal of an application for each shredder or grinder. Each section of the page contains important information needed to submit an application.
The District collects information about equipment and processes that are required to have a permit by asking for completion of application forms. These forms tell us about your operation and allow us to permit your process. It is very important that these forms are filled out completely and accurately. Errors and missing information may lead to delayed processing time and additional charges if revisions are required. Please carefully review and complete the forms. You may contact the District with any questions.
-Facility Plot Plan including equipment location, nearby building dimensions and property boundary line (if storing material containing toxics)
-Control equipment specification data sheet including control efficiency of filters and test method used to measure filter efficiency
-BACT analysis including manufacturer/supplier cost estimates (if applicable)
The general and equipment specific application forms along with
required attachments must be submitted with each application
The correct fee must be submitted with your application in order for it to be accepted. For this type of equipment, depending on the application type, the fees are either listed in the table(s) below or are determined based on the time and materials required to conduct the review. If your application type is not listed in the table(s), a fee estimate must be obtained from the District prior to submittal. Please note that the fees listed in these tables are estimated and the final fee may be more or less than this amount based on time and materials spent processing the application. The District maintains work records for this purpose.
Before submitting an application not listed in the table(s), contact the District (see bottom of page) to obtain an application fee estimate for application submittal. Please note that an additional fee may also apply depending on the method of payment. A breakdown of how the application fee(s) are determined can be seen here. Additional information can be found in District Rule 40.
These fees may be paid by check payable to "Air Pollution Control District" or by credit card (Visa, MasterCard, Discover, and American Express).
If you choose to email or fax your application and intend on paying with a credit card, you must provide contact information (name and phone number) so that the District can complete payment.
Please note that credit card payments are assessed a transaction fee of 2.2% that is charged by the credit card provider.
If a piece of equipment or a process emits more than 10 pounds per day of particulate matter (PM10), oxides of nitrogen (NOx), volatile organic compounds (VOC) or oxides of sulfur (SOx), the application must include a best available control technology (BACT) analysis. The District has a BACT guide to assist with the analysis. If you have questions or need assistance reference the contact information at the bottom of this page. Please review District Rules 20.1 and 20.2.
District Rule 1200 applies to any new, relocated, or modified emission unit which may increase emissions of one or more toxic air contaminant(s). The proposed project must comply with Rule 1200. Proposed equipment may require toxics best available control technology (TBACT) depending on the project. Please review District Rule 1200 for further details.
District rules address how information that is submitted to the District is managed. District Regulation IX contains District rules 176 and 177. Please refer directly to these rules when submitting trade secret information. However, be aware that you will need to submit:
1. A letter disclosing the proprietary information. This can be submitted electronically.
2. A letter for the public record explaining why the information needs to be held as trade secret.
The inclusion of proprietary information can significantly delay permit applications. In an effort to expedite the permit application process it is recommended that you contact the manufacturer or vendor of any proprietary materials that are used in the process and prepare the required letters as part of your application submittal.
In 1989, the California state legislature passed a law, AB 3205, designed to protect schoolchildren from hazardous air contaminants. The law, as currently written, requires the District to notify parents of schoolchildren, neighboring businesses and residents of all new or modified equipment that emits any hazardous air contaminant into the air which will be installed within 1,000 feet of a school site. The law also requires the District to consider any comments before authorizing construction. Please review your proposed location. If a school property boundary is located within 1,000 feet of the proposed emissions point, the AB3205 process will be initiated. This process requires a 30 day public comment period and the overall process will delay projects by at least six weeks.
10124 Old Grove Rd
San Diego, CA 92131-1649
Select equipment type applications can now be submitted online through Citizen Access. Sign up today to get connected to your applications and permits.
The District will act on
complete applications as soon as possible but at most
within 180 days. The engineer assigned to your application will review
it and contact you within 30 days of receipt to confirm that it is
complete or request additional information. Typically permits are
issued in about 60 days. More complex processes will take
Ensuring your application is complete is the best way to reduce processing time. Complete emissions data is the most important factor in minimizing application processing time and iterative information requests. If you have any questions about what information is required, please contact the District using the information at the bottom of this page. Learn more about the rules that govern application processing time.
Sign up for Citizen Access to get up to date information on the status of your application.
Learn more about the application process and what to expect.
This equipment is not typically subject to these rules. Very large operations may be subject to NSPS rules for bulk terminals.
There are no equipment specific rules for this equipment. A complete listing of the District's rules can be found here.
The District has not prepared default emission calculation procedures for grain and dry chemical storage and transfer; however, applicable emission factors and procedure can be found at the AP-42 link below. To obtain assistance identifying a procedure or emission factors for calculating emissions, contact the District.
If available, manufacturer provided equipment specific emission
data or source test results should be utilized before using default
emission factors. Sources of all emission data used must be included
as attachments to the application.
AP-42 - An alternative compilation of emission factors and calculation procedures prepared by the EPA that may be utilized by the District in some situations for some equipment types.