The policy applies in all vulnerable areas, except WHPA-A, where the storage of agricultural source material in a temporary field nutrient storage site is or would be a significant drinking water threat (existing activity or future activity).

Establishment of a Risk Management Plan is required. Agricultural source material may only be stored in a temporary field nutrient storage site in accordance with an approved Risk Management Plan. Therefore, the storage of agricultural source material in a temporary field nutrient storage site is designated for the purposes of s.58 of the Clean Water Act.

The Risk Management Plan shall satisfy the following provisions:
The Risk Management Plan shall follow the guidelines with respect to the contents of a nutrient management strategy established under Part III of O.Reg. 267/03 under the Nutrient Management Act. It is recommended that NMAN software or similar be utilized to assist in calculations. The calculations shall be reviewed annually and the Risk Management Plan updated so that it accurately reflects the anticipated operation on the farm unit during the following year.
The Risk Management Plan shall not allow for the expansion of an existing temporary field nutrient storage site.
The Risk Management Plan shall not allow for the establishment of a new temporary field nutrient storage site for agricultural source material unless:
the temporary field site is identified in the Risk Management Plan; and
prior to the use of a site, a notice is obtained from the Risk Management Official that specifies the location of the site and limits the period of use to not more than 30 days, or a lesser time period if deemed appropriate; and
sufficient land base to accommodate the application of the stored agricultural source material is documented elsewhere in the Risk Management Plan.

The Risk Management Plan shall be renewed every five years or at the discretion of the Risk Management Official.

For properties where the person engaging in the activity has or intends to obtain, a nutrient management strategy approval as per the Nutrient Management Act, the person engaging in the activity may be deemed to be exempt from the requirement for a Risk Management Plan if the process described in O.Reg. 287/07, s. 61, is followed.

All locations for Risk Management Plans for existing activities shall be inventoried within three years and plans established with five years of the effective date of the Source Protection Plan.

Monitoring policies MP-24 and MP-25 apply.

MP-24: The Risk Management Official shall, by February 1 each year, provide to the local Source Protection Authority a summary report for the preceding calendar year that gives an inventory of the number of locations where Risk Management Plans will be negotiated. This inventory must be completed by February 1 of the year following the third anniversary of the effective date.

MP-25: The Risk Management Official shall, by February 1 each year, provide to the local Source Protection Authority a summary report for the preceding calendar year that gives information on the number of plans, a summary of the plans and a summary of any violations.