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If you observe any agricultural chemical contamination, such as stains or residue in soil, or if the laboratory analyses of soil or water samples detect contamination, you should immediately notify the MDA by contacting the Minnesota Duty Officer at (651) 649-5451 or 1-800-422-0798 to report the suspected incident. MDA staff may request that a pre-construction assessment report be submitted for review. The report should include all laboratory results, a map of the facility as it looks prior to construction with the sample locations noted on it, and a map of the facility as it is proposed to be constructed.

Based on the information provided in the report, you will be given the option to continue work in the pre-construction program, enter the Agricultural Voluntary Investigation and Cleanup (AgVIC) program or have the site prioritized (MDA will rank the site in priority order with other agricultural chemical contamination sites) for review by MDA's Comprehensive Program. The AgVIC program reviews sites in the order received and estimates a 30 to 45-day review time.

Initial sampling and analytical costs incurred in conducting a pre-construction assessment are not eligible for reimbursement through the Agricultural Chemical Response and Reimbursement Account Program (ACRRA). If contamination is discovered at your site and the MDA subsequently requests that it be further investigated and/or cleaned up, you may be eligible to receive partial reimbursement from ACRRA.

Please be advised that a pre-construction assessment may not address all areas of potential contamination at the facility, and will not indicate whether the ground water beneath the site has been affected by agricultural chemicals.

Prior to sample collection, contact Stuart Orlowski at (651) 201-6148 for further guidance.

What happens if contamination is discovered?

If you observe any agricultural chemical contamination, such as stains or residue in soil, or if the laboratory analyses of soil or water samples detect contamination, you should immediately notify the MDA by contacting the Minnesota Duty Officer at (651) 649-5451 or 1-800-422-0798 to report the suspected incident. MDA staff may request that a pre-construction assessment report be submitted for review. The report should include all laboratory results, a map of the facility as it looks prior to construction with the sample locations noted on it, and a map of the facility as it is proposed to be constructed.

Based on the information provided in the report, you will be given the option to continue work in the pre-construction program, enter the Agricultural Voluntary Investigation and Cleanup (AgVIC) program or have the site prioritized (MDA will rank the site in priority order with other agricultural chemical contamination sites) for review by MDA's Comprehensive Program. The AgVIC program reviews sites in the order received and estimates a 30 to 45-day review time.

Initial sampling and analytical costs incurred in conducting a pre-construction assessment are not eligible for reimbursement through the Agricultural Chemical Response and Reimbursement Account Program (ACRRA). If contamination is discovered at your site and the MDA subsequently requests that it be further investigated and/or cleaned up, you may be eligible to receive partial reimbursement from ACRRA.

Please be advised that a pre-construction assessment may not address all areas of potential contamination at the facility, and will not indicate whether the ground water beneath the site has been affected by agricultural chemicals.

Prior to sample collection, contact Stuart Orlowski at (651) 201-6148 for further guidance.

No
  • For each construction area up to 500 square feet - collect 2 composite samples.
     
  • For each additional 5,000 square feet of construction area or fraction thereof - collect 1 additional composite sample, up to a maximum of 6 samples for the construction area. [Exception: When soil is excavated before it is sampled, additional samples are necessary from the excavated soil pile (see “How do I collect the samples?”).]
  • Choose sample areas where there is the highest potential for contamination within the proposed construction area.
     
  • Contamination should be suspected in any area where pesticides or fertilizers have been handled. This would include previous mixing, loading, equipment parking, fertilizer impregnation tower areas, earthen dike interiors, bulk storage areas, equipment repair areas, areas with pesticide staining, dead or barren vegetation areas, scale pits, pesticide container burning areas, runoff ponding areas, water fill sites, along with any areas associated with previous spills.
  • Each sample should be a composite sample, taken from an area no larger than 15 feet in diameter. Each composite sample should consist of no more than 6 subsamples from the same depth.
     
  • If the planned construction will include significant excavation, collect the samples from below the excavated area. The samples should be collected from the 6-inch interval below the excavation. This could be completed through soil borings to the depth of the planned excavation and then sampling or by excavating the soil that needs to be removed and then sampling the bottom of the excavation. If you choose to excavate the area of construction first and then sample, please be aware that you will need to secure the excavated area and the soil pile while you are awaiting laboratory results and MDA review and approval.

* Note, Minnesota statutes require written approval from the MDA for application of pesticide or fertilizer contaminated media. This means that you MUST have prior written approval from the MDA to spread or otherwise use any excavated soil which you know or suspect might be contaminated with pesticides or fertilizer. 

  • If significant excavation is not required for the structure(s), sample from the 0 - 6-inch interval, except in graveled areas where samples should be collected from the base of the gravel to 6 inches below the base of the gravel (gravel is loose gravel and/or stones).
     
  • Additional composite soil samples are needed from the soil removed during excavation in order to determine the proper treatment for excavated soil. The soil pile should be mixed before collecting the samples. The following table illustrates the additional number of samples required to evaluate the excavated soil. Refer to MDA guidance document GD11 Soil Sampling Guidance for more information on stockpiling samples.
Volume of Soil (cubic yards) Number of Samples
<200 1
200-500 2
500-1000 3
1000-2000 4

 

We suggest samples be analyzed for total Kjeldahl nitrogen (TKN), nitrate-nitrogen, MDA List 1 pesticides, and any other agricultural chemicals that, due to past practices may be present in the area of construction. The MDA List 1 pesticides are listed in Guidance Document 26 Analytical Lists for Pesticide Incident Investigations.

If you observe any agricultural chemical contamination, such as stains or residue in soil, or if the laboratory analyses of soil or water samples detect contamination, you should immediately notify the MDA by contacting the Minnesota Duty Officer at (651) 649-5451 or 1-800-422-0798 to report the suspected incident. MDA staff may request that a pre-construction assessment report be submitted for review. The report should include all laboratory results, a map of the facility as it looks prior to construction with the sample locations noted on it, and a map of the facility as it is proposed to be constructed.

Based on the information provided in the report, you will be given the option to continue work in the pre-construction program, enter the Agricultural Voluntary Investigation and Cleanup (AgVIC) program or have the site prioritized (MDA will rank the site in priority order with other agricultural chemical contamination sites) for review by MDA's Comprehensive Program. The AgVIC program reviews sites in the order received and estimates a 30 to 45-day review time.

Initial sampling and analytical costs incurred in conducting a pre-construction assessment are not eligible for reimbursement through the Agricultural Chemical Response and Reimbursement Account Program (ACRRA). If contamination is discovered at your site and the MDA subsequently requests that it be further investigated and/or cleaned up, you may be eligible to receive partial reimbursement from ACRRA.

Please be advised that a pre-construction assessment may not address all areas of potential contamination at the facility, and will not indicate whether the ground water beneath the site has been affected by agricultural chemicals.

Prior to sample collection, contact Stuart Orlowski at (651) 201-6148 for further guidance.

Agricultural Pesticides are products that bear labeling which meets federal Worker Protection Use Requirements established by 40 CFR Parts 156 and 170. These products can be readily identified by the “Agricultural Use Requirements” box on their label. This section describes Worker Protection Standard Use Requirements. These products are typically used in agriculture and non-ag industries such as greenhouse/nursery, rights-of-way, landscape and forestry. Agricultural pesticides may be classified as restricted use or non-restricted use pesticide.

What are agricultural pesticides?

Agricultural Pesticides are products that bear labeling which meets federal Worker Protection Use Requirements established by 40 CFR Parts 156 and 170. These products can be readily identified by the “Agricultural Use Requirements” box on their label. This section describes Worker Protection Standard Use Requirements. These products are typically used in agriculture and non-ag industries such as greenhouse/nursery, rights-of-way, landscape and forestry. Agricultural pesticides may be classified as restricted use or non-restricted use pesticide.

No

To identify an agricultural pesticide, look on the product label for a boxed section labeled "Agricultural Use Requirements".

How can I tell if a product is an agricultural pesticide?

To identify an agricultural pesticide, look on the product label for a boxed section labeled "Agricultural Use Requirements".

No

The MDA Registered Product Search web page is a source where you can find product information. Various searches are available based on EPA registration number, company name, or product name. The list of pesticides includes an agricultural pesticide column; when a Yes appears in the column the product meets the agricultural pesticide definition. Persons may also contact the MDA’s registration program at 651-201-6583.

Where can I identify products as agricultural pesticides and find product EPA registration numbers or MDA product numbers?

The MDA Registered Product Search web page is a source where you can find product information. Various searches are available based on EPA registration number, company name, or product name. The list of pesticides includes an agricultural pesticide column; when a Yes appears in the column the product meets the agricultural pesticide definition. Persons may also contact the MDA’s registration program at 651-201-6583.

No

Check the Registered Product Search database at the MDA Web Site.

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