Section 02.03.01.400 - DETERMINING PESTICIDE AREA BOUNDARIESSection 400 describes the methods for determining the pesticide area boundaries for the response levels in Section 200. (3-31-22)
01.Pesticide Area Boundary Factors. In determining the area of pesticide concern, restricted area, or prohibition area the Director shall implement Section 200 and may consider but not be limited to the following factors: (3-31-22) a. Pesticide detections from reliable ground water test samples; (3-31-22)b. Number and frequency of detections; (3-31-22)c. Statistical trends of detections; (3-31-22)d. Location of detections; (3-31-22)e. Hydrogeology of the aquifer; (3-31-22)f. Well depth and construction; (3-31-22)g. Aquifer vulnerability and susceptibility; (3-31-22)h. Pesticide physical and chemical characteristics; (3-31-22)i. Pesticide use; or (3-31-22)j. Other scientifically defensible information. (3-31-22)02.Determining Boundaries. An area of pesticide concern, restricted area, or a prohibition area may encompass land areas which, in the Director's judgment, are susceptible to pesticide contamination of ground water based on the factors identified in Subsection 400.01. The boundaries of an area of pesticide concern, restricted area, or a prohibition area shall be sufficient to meet Section 200 requirements. The boundaries may include any of the following: (3-31-22) a. Mapped boundaries between soil types or other hydrogeologic features; (3-31-22)b. Ground water or surface water divides such as watershed boundaries; (3-31-22)c. Legal land description boundaries; (3-31-22)d. Public roads; or (3-31-22)e. Other recognizable boundaries. (3-31-22)Idaho Admin. Code r. 02.03.01.400