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Michigan Administrative Code (Last Updated: November 16, 2016) |
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Department EQ. Environmental Quality |
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Water Resources Division |
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Chapter Water Resources Protection -- Part 22. Groundwater Quality |
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Part 22. GROUNDWATER QUALITY |
Section 323.2232. Monitoring and limiting certain discharges.
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A discharge authorized under R 323.2216(2) or (3) shall be limited and monitored by the discharger as follows:
(a) Flow shall be measured.
(b) Unless otherwise approved by the department under subdivision (d) of this rule, grab samples shall be collected and analyzed twice each month for the following parameters:
(i) Ammonia-nitrogen.
(ii) Nitrate-nitrogen.
(iii) Nitrite-nitrogen.
(iv) Sodium.
(v) Chloride.
(vi) Phosphorus.
(vii) The pH.
(viii) Dissolved oxygen for a primary cell described in R 323.2231(1) (d)(ii).
(c) For a discharge authorized under R 323.2216(3), the effluent limitations are as follows:
(i) Total inorganic nitrogen is limited to 20 mg/l in the effluent if the discharge is done under R 323.2233 and R 323.2234 or R 323.2235.
(ii) Total inorganic nitrogen is limited to 5 mg/l in the effluent if the discharge is done under R 323.2233 and R 323.2236.
(iii) Sodium is limited to 150 mg/l in the effluent.
(iv) Chloride is limited to 250 mg/l in the effluent.
(v) Total phosphorus is limited to 5 mg/l in the effluent if the discharge is done under R 323.2233 and either R 323.2234 or R 323.2235.
(vi) Total phosphorus is limited to 2 mg/l in the effluent if the discharge is done under R 323.2233 and R 323.2236.
(vii) The pH of the effluent shall be between 5.5 and 10.0 standard units.
(d) The application rate of the discharge shall be determined by direct measurement or calculation. If the discharge in done in accordance with R 323.2233 and R 323.2234 or R 323.2235, then the flow volume shall be reported in gallons per day and the application rate of the discharge shall be
reported both in units of inches per day and inches per week. If the discharge is done in accordance with R 323.2233 and R 323.2236, then the flow volume shall be reported in gallons per day.
(e) Alternative measurement frequencies may be approved by the department if the discharger demonstrates that results are representative of the discharge.
(f) ) Monitoring reports shall be submitted in accordance with R 323.2225.
History: 1980 AACS; 1998-2000 AACS