House Journal: Page 1455: Friday, April 12, 2002
10 establish a phosphorus index by rule in order to
11 determine the manner and timing of the application to
12 a land area of manure originating from a confinement
13 feeding operation. The phosphorus index shall provide
14 for the application of manure on a field basis. The
15 phosphorus index shall be used to determine
16 application rates, based on the number of pounds of
17 phosphorus that may be applied per acre and
18 application practices. The phosphorus index shall be
19 based on the field office technical guide for Iowa as
20 published by the United States department of
21 agriculture, natural resources conservation service,
22 which sets forth nutrient management standards.
23 (b) The department shall develop a state
24 comprehensive nutrient management strategy. Prior to
25 developing the state comprehensive nutrient management
26 strategy, the department shall complete all of the
27 following:
28 (i) The development of a comprehensive state
29 nutrient budget for the maximum volume, frequency, and
30 concentration of nutrients for each watershed that
31 addresses all significant sources of nutrients in a
32 water of this state on a watershed basis.
33 (ii) The assessment of the available nutrient
34 control technologies required to identify and assess
35 their effectiveness.
36 (iii) The development and adoption of
37 administrative rules pursuant to chapter 17A required
38 to establish a numeric water quality standard for
39 phosphorus.
40 (c) Regardless of the development of the state
41 comprehensive nutrient management strategy as provided
42 in subparagraph subdivision (b), the department shall
43 adopt rules required to establish a phosphorus index.
44 The department shall cooperate with the United States
45 department of agriculture natural resource
46 conservation service technical committee for Iowa to
47 refine and calibrate the phosphorus index in adopting
48 the rules. Rules adopted by the department pursuant
49 to this subparagraph shall become effective on July 1,
50 2003.
Page 35
1 (d) The department shall conduct a study that
2 considers the effects on waters of this state from
3 phosphorus originating from municipal and industrial
4 sources and from farm and lawn and garden use. The
5 department shall report the results of its study to
6 the general assembly by January 1, 2004.
7 (e) A person submitting a manure management plan
8 shall include a phosphorus index as part of the manure
© 2002 Cornell College and
League of Women Voters of Iowa
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