820326_Complete File - Historical_20020915

OPERATION AND MAINTENANCE PLAN
SHEET 1 OF 2
This lagoon is designed for waste treatment (permanent storage) and
180 days of temporary storage. The time required for the planned
fluid level (permanent and temporary storage) to be reached may vary
due to site conditions, weather, flushing operations, and the amount
of fresh water added to the system.
The designed temporary storage consists of 180 days storage for:
(1) waste from animals and (2) excess rainfall after evaporation. Also
included is storage for the 25 yr - 24 hr storm for the location and a
heavy rain factor. The volume of waste generated from a given number
of animals will be fairly constant throughout the year and from year to
year, but excess rainfall will vary from year to year. The heavy rain
factor and 25 yr rainfall will not be a factor to consider in an annual
pumping cycle, but this storage volume must always be available.
The waste produced by the animals shall be utilized
an approved waste utilization plan.; Highly visible
installed to mark the upper and lower elevations of
storage (pumping volume). Pumping shall be done as
maintain the liquid level between these markers.
Pumping can be started or stopped at any time between these two
elevations for operating convenience as site conditions permit, such as
weather, soils, crop, and equipment in order to apply waste without
runoff or leaching.
Land application of waste water is recognized as an acceptable
method of disposal. Methods of application.include solid set,
center pivot, guns, and traveling gun irrigation. Care should be
taken when applying waste to prevent damage to crops.
in accordance with
markers shall be
the temporary
necessary to
The following items are to be carried out:
1. Before wastes are introduced, the waste treatment lagoon shall be
charged to 1/2 its treatment volume to prevent excessive odors during
start-up. Pre -charging reduces the concentration of the initial
waste entering the lagoon thereby reducing odors. Solids should be
covered with effluent at all times. When precharging is complete,
flush buildings with recycled lagoon liquid. Fresh water should not
be used for flushing after initial filling.
2. The attached waste utilization plan shall be followed. This
plan recommends sampling and testing of waste (see attachment)
before land application.
3. Begin temporary storage pump -out of the lagoon when fluid level
reaches the elevation 51.52 as marked by permanent marker. Stop pump -
out when the fluid level reaches elevation 48.67 This temporary
storage less 25 yr and heavy rain contains 776823 cubic feet or
5810635 gallons.
C00101010743

{
SHEET 2 OF 2
4. The recommended maximum amount to apply per irrigation and
recommended maximum application rate is shown in the waste utilization
plan. Refer to the 'waste utilization plan for further details.
5. Keep vegetation on the embankment and areas adjacent to the
lagoon mowed annually. Vegetation should be fertilized as needed
to maintain a vigorous stand.
6. Repair any eroded areas or areas damaged by rodents and
establish in vegetation.
7. Repair areas of the embankment that settle below the design settled
height or areas where cracking, sloughing, or "jug" holes develop.
8. Repair waste inlet pipes that develop cracks or separate at the
joints.
9. Remove undesirable vegetative growth and floating or lodged debris.
10. All surface runoff is to be diverted from the lagoon to stable
outlets when not included as part of the design temporary storage.
11. After five years the waste treatment lagoon shall be checked for
sludge accumulation annually. If sludge has encroached into the
treatment volume, the sludge will be removed and applied at agronomic
rates based on analysis of the sludge. Treatment volume must have
a minimum of 4 feet of depth *free of sludge at all times.
12. In December 1992, the Environmental Management Commission (EMC)
in North Carolina revised water quality regulations that address
animal operations. These rules became effective on February 1,
1993 (15A NCAC 2H .0200). This animal operation shall be operated
within the requirements of these rules and regulations.
1 13.
Pipes that are used for recycling effluent to use as flush water
and irrigation intakes must be placed 18 inches below the surface and
as far from the inlet discharge pipes as possible in order to provide
a cleaner effluent for flushing and to reduce odors when irrigating on
land. When these pipes are.placed through the embankment, they should
be installed no more than two feet below top of embankment and not in
the highest section of fill. The pipe trench shall be compacted with
clayey material or other material as approved by an engineer.
C 00101010744