250 R.I. Code R. 250-RICR-150-10-3.34

Current through November 21, 2024

Section 250-RICR-150-10-3.34 - Appendix 7 - Maximum Cumulative Loading Rates

METAL	DRY TONS PER ACRE
Arsenic	41 kg As/hectare (ppm As) x 0.002
Cadmium	39 kg Cd/hectare (ppm Cd) x 0.002
Copper	1500 kg Cu/hectare (ppm Cu) x 0.002
Lead	300 kg Pb/hectare (ppm Pb) x 0.002
Mercury	17 kg Hg/hectare (ppm Hg) x 0.002
Nickel	420 kg Ni/hectare (ppm Ni) x 0.002
Selenium	100 kg Se/hectare (ppm Se) x 0.002
Zinc	2800 kg Zn/hectare (ppm Zn) x 0.002
The parts per million of each metal are provided in the sludge analyses. The lowest value is chosen from the above nine (9) calculations as the maximum cumulative tons of sludge which can be applied per acre.