Operational Agricultural Sludge Application
Research initiated in 1991 demonstrated the benefit of land application of sludge on agricultural land. Based on these results, operational landspreading on farm fields began in 1993.
Regulatory requirements associated with operational sludge spreading on farm fields evolved with time. Initial requirements included:
- One time only maximum application of 25 dry t/ha
- Pre and post-application soil sampling in 15 and 20 cm intervals to 3 m at 6-10 random locations for each 16 ha parcel of land (1 sample/5 ha)
- Soil analyses were to be conducted for the following parameters: pH, EC, SAR, %saturation, soluble ions, nitrate, nitrite, ammonium, phosphate, Total Kjeldahl N, Total Organic Carbon