00000000nam 2200000zi 4500
0019.874138
003CaOODSP
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006m     o  d f      
007cr bn|||||||||
008190603s1995    onca    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-on
0861 |aEn13-5/95-196E-PDF
1001 |aCrowe, Allan, |d1952- |eauthor.
24512|aA model for managing the impact of pesticide on groundwater at multiple geographical scales : |bwatershed to soil profile / |cby A.S. Crowe & W.G. Booty.
264 1|a[Ottawa] : |bEnvironment Canada, Water Science and Technology Directorate = Environnement Canada, Direction générale des sciences et de la technologie, eau, |c[1995]
300 |a1 online resource (7 unnumbered pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |a[NWRI contribution] ; |v95-196
500 |aCover title.
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"The multi-level pesticide assessment methodology developed here permits regulatory personnel to undertake a variety of assessments on the potential for groundwater contamination from pesticides in agricultural areas at an increasingly detailed geographical scale of investigation. This approach accounts for a variety of assessment objectives, geographical scales, restrictions on the availability and accuracy of data, time available to undertake the assessment, and the expertise of the decision maker. The Level 1: regional scale ranks the relative potential for groundwater contamination among several districts. The Level 2: local scale assesses the potential for groundwater contamination of soils within a district at a soil polygon scale. A Level 3: soil profile scale allows the user to simulate the migration of a pesticide within a specific soil profile, and to determine the extent and timing of leaching of the pesticide. The system developed here integrates, GIS, data bases, data management systems, knowledge-based systems, and pesticide assessment models"--Abstract.
69207|2gccst|aPesticides
69207|2gccst|aGroundwater
69207|2gccst|aWater pollution
7001 |aBooty, William G., |eauthor.
7101 |aCanada. |bEnvironment Canada.
7101 |aCanada. |bWater Science and Technology Directorate.
7102 |aNational Water Research Institute (Canada)
830#0|aNWRI contribution ;|v95-196.|w(CaOODSP)9.844121
85640|qPDF|s1.44 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-95-196-eng.pdf