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Council reviews Crossgates wastewater audit; staff details exceedances and corrective monitoring

St. Tammany Parish Council · August 7, 2026
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Summary

Council reviewed the 2025 environmental audit for the Crossgates sewage treatment plant; staff reported CBOD, ammonia and biomonitoring exceedances in early 2025 tied to equipment failures and plant flow transfers and said the issues were corrected with additional monitoring.

Council members discussed the 2025 municipal water pollution prevention environmental audit for the Crossgates sewage treatment facility and moved to acknowledge receipt and review of the report. Staff answered specific questions about permit exceedances and biomonitoring failures and explained corrective steps taken.

In response to council questions, staff said the plant experienced carbonaceous biochemical oxygen demand (CBOD) exceedances and coliform issues in January 2025 due to blower failures, and additional ammonia and total suspended solids exceedances during March 2025 when flows were shifted between plants during construction. Staff said they failed a March biomonitoring test but passed subsequent quarterly testing in April, May and June after adjustments and additional monitoring.

Council adopted the resolution to acknowledge receipt and review of the audit; staff noted that corrective actions were documented in reports submitted to the Department of Environmental Quality.