SCHEDULE 3

PART I REQUIREMENTS FOR DISCHARGES FROM TREATMENT PLANTS

Analyses concerning discharges from lagooning shall be carried out on filtered samples; however, the concentration of total suspended solids in unfiltered water samples shall not exceed 150 mg/l.

TABLE 2 REQUIREMENTS FOR DISCHARGES FROM URBAN WASTE WATER TREATMENT PLANTS TO SENSITIVE AREAS WHICH ARE SUBJECT TO EUTROPHICATION AS IDENTIFIED IN SUB-PARAGRAPH (a) OF PART I OF SCHEDULE 1

One or both parameters may be applied depending on the local situation. The values for concentration or for the percentage of reduction shall apply.

Parameters

Concentration

Minimum percentage of reduction {s003}

Reference method of measurement

Total phosphorus

2 mg/l P (10,000—100,000 p.e.) 1 mg/l P (more than 100,000 p.e.)

80

Molecular absorption spectrophotometry

Total nitrogen {s004}

15 mg/l N (10,000—100,000 p.e.) 10 mg/l N (more than 100,000 p.e.)

70—80

Molecular absorption spectrophotometry

{s003} Reduction in relation to the load of the influent.

{s004} Total nitrogen means: the sum of total Kjeldahl-nitrogen (organic N + NH3), nitrate (NO3)-nitrogen and nitrite (NO2)-nitrogen.