Report

Incidentreport

Underthe compliance responsibilities Part II.7 of our NDPDES permit NoND0024945 ABC Power Company wishes to submit this incident reportabout the noncompliance that happened at Power Plant 1 pond. As perthe attached laboratory tests conducted on the evening of thedischarge under 304(h) of the Clean Water Act, the solids suspendedin the sample from the discharge total to 296 mg/l, exceeding theallowed daily limit (50 mg/l) as per the permit (Environmental HealthSection permit No 0024945, 2008). On the material day, the float,usually attached to the pump hose where the suction unit is located,accidentally detached (Environmental Health Section permit No0024945, 2008. That made the suction unit sink and mud was insteadsucked out in the discharge process (Environmental Health Sectionpermit No 0024945, 2008. The sample analyzed by the laboratory wasfrom the muddy discharge process.

Thecompany’s authorized discharge procedure was carried out from1700hrs of 5thAugust 2012 through to the next day at 0700hrs of 6thAugust 2012. The plant personnel did a complete discharge set-upprocedure to lower the Power Plant 1 pond water elevation in expectedinflow so as to contain the expected runoff from severe thunderstormsthat evening. Later in the night, there were heavy winds and stormsin the area. During this period, the pump was running and the pondwater getting discharged. However, the plant personnel was attendingto another emergency at the far end of the facility and did not checkup on the pump suction end due to the thunderstorms and immense windsthat blowing through the plant at about 2100hrs. It is at this timethat the detached suction head sunk to the bottom of the pond,discharging muddy waters. The sample was picked from the far end ofthe pipe one hour later and sent to the laboratory.

Onarrival the following day at 0700hrs, the Power Plant 1 manager sawdirty water coming out of the pipe’s discharge end. The pump wasimmediately shut off, and the suction end of the pipe pulled from thebottom of the pond, thus stopping further discharge of the muddywater. The Power Plant manager immediately reprimanded the plantpersonnel to detail on the night’s events. Three hours later, thecompany received the results of the sample analysis from thelaboratory. Upon noticing the exceedance on the sample’s dischargeconcentration, the Manager called the Department of Health first todisclose the noncompliance in agreement with Part II.7.c of thepermit (Environmental Health Section permit No 0024945, 2008.

ABCPower Company wishes to affirm that it has been employing the bestmanagement practices to prevent and minimize pollution at thefacility. The company has complied with the effluent limitations andmonitoring requirements by always taking samples before the dischargewater leaves our power plant. The company has also duly filed itsmonitored samples results as per the last Discharge Monitoring form submitted to the North Dakota Department of Health on 31stJuly 2012. Further to that, submission of the report on additionalmonitoring was made on 15thJuly 2012 for the quarter period of April through June 2012. Wesincerely apologize and wish to assure the North Dakota Department ofHealth that a dedicated team has now been employed with CCTVmonitoring of the Power Plant 1 pond waters to ensure that theincident does not recur.

Reference

EnvironmentalHealth Section permit No 0024945.(2008). North Dakota Department of health. Retrieved fromwww.ndhealth.gov