310035_Accidental Discharge Response_20190523

Murphy -Brown.
Murphy Brown East
May 23, 2019
David Powell
NCDENR — Division of Water Resources
127 Cardinal Drive Extension
Wilmington, N.C. 28405
RE: M&M Farm 2748
Facility # 31-035
Accidental Discharge 5/20/19
Po Box 856
Warsaw, NC 28398 RECEIVED/NCDENR/DWR
MAY 2 8 2019
Water Quality Regional
Operations Section
Wilmington Regional Office
Dear Mr. Powell,
This letter is the follow-up to an accidental discharge on farm 2748 reported to Kristen Miguez
with DWR on May 20, 2019. The sequence of events on Monday 5/20/2019 was as follows:
1) Farm personnel found a discharge from the recycle system while completing their daily
farm inspections on Monday at 7am. The farm staff immediately shut off the pump system
and notified management.
2) When the LNM complex manager arrived, he tracked the flow to see where the effluent
had flowed and determined the best possible way for containment. Recovery and
remediation efforts were immediately initiated, which included bringing in heavy equipment
to effectively contain the effluent. The combined group effort focused on containment of
the flow and returning recovered effluent to the farm's manure management system.
3) When equipment arrived, a containment dam was constructed. Pumps were set up and
remediation began at approximately 11:30am. The effluent mixed water was returned to
the farms lift station. I called Kristen Miguez with DWR at approximately 2:40 pm to report
the spill and give details of the situation.
4) David Powell and Michael Mellinger with DWR arrived Monday 5/20/19 at approximately
4:30pm to inspect the incident and recovery efforts.
5) Recovery and remediation included pumping the effluent back to the lift station (to the
farms lagoon) from the containment dam. Cleanup efforts were carried on into the night
on 5/20/19 and on 5/21/19. As part of the recovery efforts the ditch was flushed with fresh
water to ensure that all effluent was returned.
6) Our LNM crew invested over 55-man hours in efforts to recover as much effluent from the
spill as possible at a cost of approximately $2,995.00.
7) Root Cause: A 3" PVC hose inside the lagoon dike failed causing a crack in the line
spraying effluent into the air inside the dike with a small portion of that spraying outside of
the dike.
Estimate of the discharge:
A) We estimate approximately 13,200 gallons was sprayed from the recycle line and that
no more than 804 gallons of that reached waters of the state. Through our efforts we
feel that no more than approximately 50 gallons escaped below our constructed dam.

• Page 2 May 23, 2019
The remaining was returned to the sites manure management system by way of
recovery pumps. See estimate of discharge attached
Corrective Actions taken:
1) The cracked PVC hose was replaced
2) Engineering and production are reviewing the site/system for improvements
Included with this letter is a copy of the most current waste analysis as required by the permit along
with a copy of the estimate of discharge.
I have outlined all currently available information about this incident. Murphy -Brown LLC staff has
responded in an appropriate and responsible manner in accordance with our Environmental
Management System emergency response plan and in keeping with our responsibilities under the state
permit.
Our Environmental Management System (EMS) proved its' effectiveness by providing the structure and
protocol that all parties involved in the response and ensuring, that they did so in a timely and effective
manner.
If I can be of any further assistance, please feel free to contact me
Sincerely,
Michael Norris
Environmental Resource Specialist
Murphy -Brown LLC
[phone]

Estimate of discharge, recovery, & impact
ponded
0.33 ft deep
12 ft wide
infiltrated
0.17 ft deep
3 ft wide
3.96 cf/ft
0.51 cf/ft
7.48 gal/cf
7.48 gal/cf
29.6 gal/ ft
3.8 gal/ ft
206 ft length
1650 ft length
6,102 gallons
6,294 gallons
6,102 ponded / flowing
/ recovered 4" x 12' x 206'
6,294 infiltrated 2"
x 3' x 1650'
12,396 total
22 estimate max run time ( hr)
10 flowrate (gpm)
13200 max gallons leaked beyond the lagoons
804 gallons which went beyond the 1650' dry ditch
750 gallons recovered within ditch water
54 gallons escaped
The majority of the water which sprayed out of the crack landed on the HPDE liner and drained back into the lagoon. The rate
of flow of the water which escaped the lagoon is estimated to be approximately 10 GPM (site and spray was observed by
engineering). With the recycle pump capacity and the site last viewed at 9 am by an employee it is estimated that the
maximum runtime would not have exceeded 22 hours. The maximum volume is approximately 13,200 gallons. At this
reasonably slow rate, a significant portion of the water infiltrated into the dry soils along its path. The volume is assumed to be
2" of depth of absorption along a 1,650' flow path at an average of 3' which equals 6,294 gallons. There was some volume that
reached flowing water in the ditch beyond the 1,650' of the previously dry flow path. This volume was approximately 804
gallons of the total spill which reached waters of the state. Only a fraction of this volume approximately 54 gallons passed
beyond the tempory dam. This is supported by the minnows and tad poles which were observed swimming through all
portions of the ditch both upstream and down stream of the temporary dam. The spill and recovery operations took place
entirely within our property boundary.

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