Current through Register Vol. 39, No. 6, September 16, 2024
(a) The
requirements in this Rule shall apply to all new and expanding
facilities.
(b) Soils report. A
soil evaluation of the disposal site shall be provided to the Division by the
applicant in a report that includes the following. If required by G.S. 89F, a
soil scientist shall prepare this evaluation:
(1) a field description of the soil profile,
based on examinations of excavation pits or auger borings, within seven feet of
land surface or to bedrock, describing the following parameters by individual
diagnostic horizons:
(A) the thickness of the
horizon;
(B) the texture;
(C) the color and other diagnostic
features;
(D) the
structure;
(E) the internal
drainage;
(F) the depth, thickness,
and type of restrictive horizon; and
(G) the presence or absence and depth of
evidence of any seasonal high water table.
Applicants shall dig pits when necessary for evaluation of
the soils at the site;
(2) recommendations concerning loading rates
of liquids, solids, other wastewater constituents, and amendments. Annual
hydraulic loading rates shall be based on in-situ measurement of saturated
hydraulic conductivity in the most restrictive horizon for each soil mapping
unit. Maximum infiltration rates shall be provided for each soil mapping
unit.
(3) a field-delineated soil
map delineating soil mapping units within each land application site and
showing all physical features, location of pits and auger borings, legends,
scale, and a north arrow. The legends shall also include dominant soil series
name and family or higher taxonomic class for each soil mapping unit;
and
(4) a Standard Soil Fertility
Analysis conducted on each land application site. The Standard Soil Fertility
Analysis shall include the following parameters:
(A) acidity;
(B) base saturation (by
calculation);
(C)
calcium;
(D) cation exchange
capacity;
(E) copper;
(F) exchangeable sodium percentage (by
calculation);
(G)
magnesium;
(H) manganese;
(I) percent humic matter;
(J) pH;
(K) phosphorus;
(L) potassium;
(M) sodium; and
(N) zinc.
[Note: The North Carolina Board for Licensing of Soil
Scientists has determined, via letter dated December 1, 2005, that preparation
of soils reports pursuant to this Paragraph constitutes practicing soil science
pursuant to G.S. 89F.]
(c) Engineering design documents. If required
by G.S. 89C, a professional engineer shall prepare these documents. The
following documents shall be provided to the Division by the applicant:
(1) engineering plans for the entire system,
including treatment, storage, application, and disposal facilities and
equipment except those previously permitted unless those previously permitted
are directly tied into the new units or are necessary to understanding the
complete process;
(2)
specifications describing materials to be used, methods of construction, and
means for ensuring quality and integrity of the finished product including
leakage testing; and
(3)
engineering calculations, including hydraulic and pollutant loading for each
treatment unit, treatment unit sizing criteria, hydraulic profile of the
treatment system, total dynamic head, and system curve analysis for each pump,
buoyancy calculations, and infiltration design.
[Note: The North Carolina Board of Examiners for Engineers
and Surveyors has determined, via letter dated December 1, 2005, that
preparation of engineering design documents pursuant to this Paragraph
constitutes practicing engineering pursuant to G.S. 89C.]
(d) Site plans. If required by
G.S. 89C, a professional land surveyor shall provide location information on
boundaries and physical features not under the purview of other licensed
professions. Site plans or maps shall be provided to the Division by the
applicant depicting the location, orientation, and relationship of facility
components including:
(1) a scaled map of the
site, with topographic contour intervals not exceeding 10 feet or 25 percent of
total site relief, showing:
(A) all
facility-related structures and fences within the treatment, storage, and
disposal areas; and
(B) soil
mapping units on all disposal sites;
(2) the location of each of the following
that are located within 500 feet of a waste treatment, storage, or disposal
site, including a delineation of their review and compliance boundaries:
(A) wells, including usage and construction
details if available;
(B)
ephemeral, intermittent, and perennial streams;
(C) springs;
(D) lakes;
(E) ponds; and
(F) other surface drainage
features;
(3) setbacks
as required by Rule .0706 of this Section; and
(4) site property boundaries within 500 feet
of all waste treatment, storage, and disposal sites.
[Note: The North Carolina Board of Examiners for Engineers
and Surveyors has determined, via letter dated December 1, 2005, that locating
boundaries and physical features, not under the purview of other licensed
professions, on maps pursuant to this Paragraph constitutes practicing
surveying pursuant to G.S. 89C.]
(e) Hydrogeologic report. A hydrogeologic
description prepared by a Licensed Geologist, Licensed Soil Scientist, or
Professional Engineer if required by Chapters 89E, 89F, or 89C, respectively,
shall be provided to the Division by the applicant for systems treating
industrial waste and any system with a design flow over 25,000 gallons per day.
Industrial facilities with a design flow less than 25,000 gallons per day of
wastewater that demonstrate that the effluent will be of quality similar to
domestic wastewater, including effluent requirements established in
15A NCAC
02T .0705(b) and 02T
.0706(b) or (c) as applicable, may request and receive an exemption from this
requirement. The hydrogeologic evaluation shall be of the subsurface to a depth
of 20 feet or bedrock, whichever is less deep. An investigation to a depth
greater than 20 feet shall be required if the respective depth is used in
predictive calculations. This evaluation shall be based on sufficient numbers,
locations, and depths of borings to define the components of the hydrogeologic
evaluation. In addition to borings, other techniques may be used to investigate
the subsurface conditions at the site, including, geophysical well logs,
surface geophysical surveys, and tracer studies. This evaluation shall be
presented in a report that includes the following components:
(1) a description of the regional and local
geology and hydrogeology;
(2) a
description, based on field observations of the site, of the site topographic
setting, streams, springs and other groundwater discharge features, drainage
features, existing and abandoned wells, rock outcrops, and other features that
may affect the movement of the contaminant plume and treated
wastewater;
(3) changes in the
lithology underlying the site;
(4)
the depth to bedrock and the occurrence of any rock outcrops;
(5) the hydraulic conductivity and
transmissivity of the affected aquifer as determined by in-situ field testing,
such as slug tests or pumping tests, in the intended area of
infiltration;
(6) the depth to the
seasonal high water table;
(7) a
discussion of the relationship between the affected aquifers of the site to
local and regional geologic and hydrogeologic features;
(8) a discussion of the groundwater flow
regime of the site prior to the operation of the proposed facility and the post
operation of the proposed facility, focusing on the relationship of the system
to groundwater receptors, groundwater discharge features, and groundwater flow
media; and
(9) a mounding analysis
to predict the level of the seasonal high water table after wastewater
application.
[Note: The North Carolina Board for Licensing of
Geologists, via letter dated April 6, 2006, North Carolina Board for Licensing
of Soil Scientists, via letter dated December 1, 2005, and North Carolina Board
of Examiners for Engineers and Surveyors, via letter dated December 1, 2005,
have determined that preparation of hydrogeologic description documents
pursuant to this Paragraph constitutes practicing geology pursuant to G.S. 89E,
soil science pursuant to G.S. 89F, or engineering pursuant to G.S. 89C.]
(f) Property Ownership
Documentation shall be provided to the Division consisting of:
(1) legal documentation of ownership, such as
a contract, deed, or article of incorporation;
(2) an agreement of an intent to purchase the
property that is written, notarized, and signed by both parties, accompanied by
a plat or survey map; or
(3) an
agreement to lease the property that is written, notarized, and signed by both
parties, indicating the intended use of the property, accompanied by a plat or
survey map. Lease agreements shall adhere to the requirements of
15A NCAC
02L .0107.
(g) Public utilities shall submit a
Certificate of Public Convenience and Necessity or a letter from the NC
Utilities Commission stating that it has received a franchise
application.
(h) A chemical
analysis of the typical wastewater to be infiltrated shall be provided to the
Division by the applicant for industrial waste, which shall include:
(1) total organic carbon;
(2) 5-day biochemical oxygen demand
(BOD5);
(3)
chemical oxygen demand (COD);
(4)
nitrate nitrogen (NO3-N);
(5) ammonia nitrogen
(NH3-N);
(6)
total kjeldahl nitrogen (TKN);
(7)
pH;
(8) chloride;
(9) total phosphorus;
(10) phenol;
(11) total volatile organic
compounds;
(12) fecal
coliform;
(13) calcium;
(14) sodium;
(15) magnesium;
(16) sodium adsorption ratio (SAR);
(17) total trihalomethanes; and
(18) total dissolved solids.
(i) A project evaluation and a
receiver site agronomic management plan (if applicable) containing
recommendations concerning cover crops and their ability to accept the proposed
application rates of liquid, solids, minerals, and other constituents of the
wastewater shall be provided to the Division.
(j) A Residuals Management Plan as required
by Rule .0708(a) of this Section is to be provided to the Division.
(k) The applicant shall provide to the
Division a water balance that determines the required effluent storage based on
the most limiting factor from the following:
(1) hydraulic loading based on the most
restrictive horizon;
(2) hydraulic
loading based on the groundwater mounding analysis;
(3) nutrient management based on agronomic
rates for the specified cover crop; or
(4) nutrient management based on crop
management.
(l)
Facilities utilizing subsurface groundwater lowering drainage systems shall
demonstrate that groundwater and surface water standards will be
protected.
Authority
G.S.
143-215.1;
143-215.3(a);
Eff. September 1, 2006;
Readopted Eff. September 1,
2018.
