N.J. Admin. Code § 7:26-2A.5

Current through Register Vol. 56, No. 24, December 18, 2024

Section 7:26-2A.5 - Additional engineering design submittal requirements for sanitary landfills

(a) In addition to the requirements of N.J.A.C. 7:26-2.10, the engineering design submission requirements for sanitary landfills shall include the following:

1. A regional map prepared and submitted in accordance with N.J.A.C. 7:26-2.10(b)4 which shall include, but not be limited to, the following additional information:

i. Location of all public community water supply wells and all wells permitted to pump over 100,000 gallons per day or 70 gallons per minute within one and one-half miles of the property line of the landfill. The service areas, if any, of the public community water systems, as defined in N.J.A.C. 7:10-1.3, within one and one-half miles of the property line of the sanitary landfill; and

ii. Location of all water wells within one-half mile of the property line of the sanitary landfill;

2. A site plan map delineating the existing contours of the proposed sanitary landfill area prepared and submitted in accordance with N.J.A.C. 7:26-2.10(b)6 which shall include, but not be limited to, the following additional information:

i. Delineation of the area-wide modular development of the sanitary landfill's construction and operations and, where applicable, the lateral limits of previously filled areas;

ii. Delineation of the vertical and horizontal control monuments and property corner markers. The North American Datum of 1983 is required for mapping in the horizontal plane. The North American Vertical Datum of 1988 should be used when possible rather than the National Geodetic Vertical Datum of 1929 (Mean Sea Level 1929) for elevations;

iii. Location of all monitoring devices including, but not limited to, all groundwater monitoring wells, lysimeters, gas monitoring wells, gas vents, piezometers, inclinometers and bore hole extensometers. Elevations of the monitoring wells and piezometers shall be determined to the top of the outercasing and for the adjacent ground surface. The horizontal and vertical location shall be represented as required by N.J.A.C. 7:26-2.10(b)6 i. In areas, as dictated by the site geology, the vertical location accuracy may be required to be accurate to the nearest 0.01 foot; and

iv. Location of all borings, excavations and test pits. The horizontal and vertical location of all borings shall be represented as required by N.J.A.C. 7:26-2.10(b)6 i. In areas, as dictated by the site geology, the vertical location accuracy may be required to be accurate to the nearest 0.01 foot;

3. Additional site plan maps which delineate in plan view and in detailed cross-sectional view the following:

i. The initial elevations of the proposed sanitary landfill showing all grades of the liner and, where applicable, the subgrade;

ii. The final elevations of any excavation showing all grades of the excavation and, where applicable, all grades of the subgrade;

iii. The leachate collection system showing all grades of the collection pipe, pipe envelope drainage layer, filter manhole/clean-out risers and sumps;

iv. All berms, dikes, ditches, swales or other protection devices as needed to divert or collect surface water run-on or run-off;

v. The system utilized for venting and monitoring the gases generated within the sanitary landfill and, if applicable, from beneath the liner;

vi. The final elevations and grades of the capping system including the subgrade for the impervious cap, the drainage and vegetative layers, the drainage pipes and drainage envelope;

vii. All grades of leachate treatment and disposal systems including the leachate removal pipes, the equalization pond, treatment or pre-treatment ponds or storage facilities; and

viii. All proposed landscaping and screening techniques to be utilized to minimize the visual impact of the sanitary landfill.

4. Additional engineering drawings, designs or maps which describe, in sufficient detail, the construction specifications of the systems utilized in the sanitary landfill. These maps or drawings may be combined with those required by N.J.A.C. 7:26-2A.5(a)3 so long as the required details are clearly distinguishable and identifiable. They shall include, but not be limited to, the following:

i. Subgrade;

ii. Liner/cut-off wall;

iii. Drainage layer and filter;

iv. Collection pipe and drain envelope;

v. Inlet/outlet structures;

vi. Manholes, sumps, pumps, and pump station;

vii. Leachate storage tanks;

viii. Leachate treatment impoundments or tanks;

ix. Leachate disposal systems;

x. Gas vents, manifolds and pump station;

xi. Monitoring wells/devices;

xii. Surface drainage and erosion controls; and

xiii. Cap.

5. An engineering report which includes, but is not limited to, the following additional information:

i. A description of the general installation methods and procedures for construction of the facility including materials required, equipment utilized, and scheduling of construction events and phases. To insure that the construction requirements of this subchapter are properly implemented, the description shall include, but not be limited to, the following:

(1) Site preparation;

(2) Subgrade;

(3) Liner/cut-off wall;

(4) Drainage layer and filter;

(5) Collection pipes and drain envelope;

(6) Inlet/outlet structures;

(7) Manholes, sumps, pumps, and pump station;

(8) Leachate storage tanks;

(9) Leachate treatment impoundments or tanks;

(10) Leachate disposal;

(11) Gas vents, manifolds and pump stations;

(12) Monitoring wells;

(13) Surface drainage and erosion controls; and

(14) Caps.

ii. A description of the estimated solid waste capacity of the site in tons and cubic yards. Projection shall be made to determine the life expectancy of the site based on current and anticipated loading;

iii. The results with sufficient, clearly noted, calculations to verify the results, of the material testing required by this subchapter including, but not limited to, where applicable, the following:

(1)N.J.A.C. 7:26-2A.5(a)6 vi(9) and (10);

(2)N.J.A.C. 7:26-2A.7(b)3;

(3)N.J.A.C. 7:26-2A.7(c)2 i, vii, and ix;

(4)N.J.A.C. 7:26-2A.7(c)3 i, ii, and x;

(5)N.J.A.C. 7:26-2A.7(c)4 i, iv(1) and (2), and ix;

(6)N.J.A.C. 7:26-2A.7(c)5 i;

(7)N.J.A.C. 7:26-2A.7(c)6 i and iv;

(8)N.J.A.C. 7:26-2A.7(c)7 i, ii and v;

(9)N.J.A.C. 7:26-2A.7(c)8 ii and v;

(10)N.J.A.C. 7:26-2A.7(c)9 i and iv;

(11)N.J.A.C. 7:26-2A.7(c)10 i, ii, iii and iv;

(12)N.J.A.C. 7:26-2A.7(d)2 ii;

(13)N.J.A.C. 7:26-2A.7(d)3 i, iii, ix and xvii;

(14)N.J.A.C. 7:26-2A.7(f)6, 12 and 14ii;

(15)N.J.A.C. 7:26-2A.7(g)4 and 8;

(16)N.J.A.C. 7:26-2A.7(i)3;

(17)N.J.A.C. 7:26-2A.7(i)9 iv;

(18)N.J.A.C. 7:26-2A.7(i)10 i; and

(19)N.J.A.C. 7:26-2A.7(d)2 x(1).

iv. A description of how the sanitary landfill will meet the environmental performance standards required by N.J.A.C. 7:26-2A.6 and the design standards and construction requirements in N.J.A.C. 7:26-2A.7. The description shall provide sufficient, clearly notated design calculations to verify the results, including, but not limited to, the following:

(1) Foundation and slope stability analysis;

(2) Liner/cut-off wall efficiency and performance;

(3) Leachate collection system's capacity, performance, and structural stability;

(4) Mass transport modeling, or other modeling approved by the Department as provided for at N.J.A.C. 7:26-2A.6(f), for the sanitary landfill performance;

(5) Pumping system's performance;

(6) Leachate treatment and disposal system's capacity and performance;

(7) Run-on/run-off system's capacity and performance;

(8) Gas venting and/or collection system's performance;

(9) Monitoring system's efficiency;

(10) Capping system's efficiency and performance; and

(11) Cover material quantity analysis.

v. A delineation of the environmentally sensitive areas listed in N.J.A.C. 7:26-2A.6(g) that are impacted by the sanitary landfill and a description of the additional design and construction measures that will be implemented at the sanitary landfill to increase performance of the environmental control systems of the sanitary landfill that will be utilized to minimize and control the potential adverse impacts and prevent pollution in accordance with N.J.A.C. 7:26-2A.6(h).

6. A geotechnical report prepared by a qualified geologist, or geotechnical engineer which includes, but is not limited to, the following requirements or items:

i. A narrative section which contains:

(1) A general description of the major characteristics of the geological formations of the region where the proposed sanitary landfill will be located including thickness, lithology, structural features, degree of weathering and amount of overburden; and

(2) A site specific description, based on the data collected pursuant to vi below, of the soils, rocks, water levels and flows. Soils test data and evaluations of the soils or rocks underlying the sanitary landfill shall be submitted, including any recommendations for site design which may be appropriate, to minimize any adverse impacts from the construction of the sanitary landfill;

ii. A soils map shall be provided for the area including the sanitary landfill and vicinity. The soils map provided shall be a copy of the map published by the United States Department of Agriculture, Soil Conservation Service or by the State soils or geologic agencies;

iii. A generalized geologic map and geologic cross sections, based on published or unpublished material and mapping available from the United States Geological Survey and New Jersey Geological Survey or unpublished mapping acceptable to the New Jersey Geological Survey, shall be provided for the area including the sanitary landfill and region, and should include, but not be limited to, the following information:

(1) Bedrock outcrop;

(2) Dip and strike of sedimentary formations and foliation trend and dip angles of igneous and metamorphic rocks;

(3) Faults and prominent shear zone trends;

(4) Joint or fracture trends in bedrock including dip angles;

(5) Trend direction of solution channels in carbonate rocks and sink holes; and

(6) Location of any active or abandoned mine workings.

iv. A generalized potentiometric map shall be provided for the area, including the sanitary landfill and the region, based upon available data including, but not limited to, existing topography, surface drainage and existing well data;

v. A well report describing the use, depth, and yield of all wells located on the regional map required by 1i and ii above and the diversion allocation for all public community water supply wells and wells yielding 100,000 gallons per day or greater;

vi. In preparing the site specific report, required by (a)6i(2) above and the site specific geological maps and detailed cross sections required by (a)6vii and viii below, sufficient borings shall be made of the proposed landfill site to characterize and verify the geology and groundwater conditions beneath the site with respect to the types of material, uniformity, hydraulic conductivity, porosity, and depth to groundwater. Borings of the proposed sanitary landfill site shall be provided at a minimum, in accordance with Table I below:

TABLE I

BORINGS

Acreage	Total Number of Borings	Number of Deep Borings
Required
Less than 10	4	1
10-49	8	2
50-99	14	4
100-200	20	5
More than 200	24 + 1 boring/each	6 + 1 boring/each
additional 10 acres	additional 40 acres

(1) The Department reserves the right to require additional borings in areas in which the number of borings required by Table I above is not sufficient to describe the geologic formations and groundwater flow patterns below the proposed sanitary landfill in regard to potential contaminant migration paths;

(2) In highly uniform geologic formations, the number of borings may be reduced, as approved by the Department, if other techniques are employed, as recommended in (a)6vi(6) below, to correlate data collected from these methods to the boring data;

(3) The borings should employ a grid pattern, wherever possible, such that there is, at a minimum, one boring in each major geomorphic feature. The borings pattern shall enable the development of detailed cross sections through the sanitary landfill in order to sufficiently define the geology. It is recommended that the soil borings be performed in a phased approach and that the number of borings in the proposed active landfilling area be minimized;

(4) Subsurface data obtained by borings shall be collected by standard undisturbed soil sampling techniques for engineering properties, and split spoon sampling or standard penetration tests for engineering indexes and classification. Diamond bit coring shall be used for rock boring. Samples shall not be composited. The sampling interval for the boring required by Table I above shall be determined by the geologist or geotechnical engineer and be approved by the Department. It is recommended that sampling be performed on a continuous basis for the first 20 feet below the lowest elevation of the sanitary landfill and collected at five foot intervals thereafter;

(5) All borings shall be a minimum depth of 20 feet below the lowest elevation of the sanitary landfill. The Department reserves the right to require a deeper minimum depth in areas in which 20 feet is not sufficient to describe the geological formation and groundwater flow patterns below the proposed sanitary landfill in regard to potential contaminant migration paths;

(6) The depth of deep borings shall be determined on a case by case basis. The depth should be, at a minimum, equal to or greater than the design height of the sanitary landfill;

(7) Excavations, test pits and geophysical methods may be employed to supplement the soil boring investigation;

(8) Field and final boring logs shall be submitted for each boring, recording soils or rock conditions encountered. Each log shall include a soil or rock description in accordance with the Unified Soil Classification System or the Rock Qualification Description System, the method of sampling, the depth of soil or rock, the water levels encountered, the blow counts, the soil tests and date. All depths of soil and rock as described within the boring log shall be corrected to National Geodetic Vertical Datum;

(9) In addition to the sampling and testing requirements for foundation analysis set forth in N.J.A.C. 7:26-2A.7(b), at a minimum three separate soil samples for each significant soil/rock class encountered shall be analyzed for unit weight, porosity, laboratory classification, cation exchange capacity, and hydraulic conductivity. The soil samples shall be taken from three separate borings;

(10) It is recommended that a sufficient number of samples, as determined by the geologist or geotechnical engineer, be analyzed for the index properties to verify the uniformity or nonuniformity of the geological formation encountered and to correlate the soils engineering properties. A soil profile for the index properties should be developed at intervals determined on-site;

(11) At a minimum, four of the borings shall be converted to water level observation wells or well nests. The total number of wells or well nests shall be determined on a case-by-case basis as approved by the Department based on the complexity of the geology of the site;

(12) The groundwater shall be sampled and analyzed for each distinct aquifer encountered below the site in accordance with the NJPDES requirements, N.J.A.C. 7:14A. It is recommended that the groundwater be sampled and analyzed in accordance with N.J.A.C. 7:14A, for one year prior to operation of the sanitary landfill;

(13) All borings, not to be utilized as permanent monitoring wells, and wells within the active disposal area shall be sealed in accordance with N.J.A.C. 7:9-9, Sealing of Abandoned Wells, and excavations and test pits shall be backfilled and properly compacted to prevent possible paths of leachate migration.

vii. Geologic maps of the proposed sanitary landfill area, based on the site specific geologic investigation required by (a)6vi above or literature review, prepared at a scale of one inch equals 200 feet (1'=200') and with contour intervals which sufficiently define the ground surface contours, and various geologic formations and aquifers beneath the proposed landfill;

viii. Detailed site specific cross sections which shall sufficiently describe the geologic formations identified by the geologic maps prepared in accordance with (a)6vii above prepared at a scale which clearly defines the geologic formations; and

ix. Potentiometric maps prepared at a scale of one inch equals 200 feet (1'= 200') with contour intervals which sufficiently define the groundwater conditions in all aquifers encountered below the proposed sanitary landfill area based upon stabilized groundwater elevations developed as part of the site specific geologic investigation required by (a)6vi above. It is recommended that two seasonal contour maps based on stabilized water levels in the wells be developed, one representing the yearly low flow condition and the other representing yearly high flow condition.

7. A quality assurance (QA) and quality control (QC) plan for the construction phase meeting the requirements set forth at N.J.A.C. 7:26-2A.7(a)7 through 24 shall be submitted. It shall include, but not be limited to, the following information:

i. A delineation of the QA and QC management structures, including the chain of command of the QA and QC inspectors and describing the quality control and corrective action implementation responsibilities of the QA and QC inspectors and the contractors;

ii. A description of the required level of experience for the contractor and the contractor's crew for every major phase of construction which shall be sufficient to insure that the installation methods and procedures as required in (a)5i above are property implemented;

iii. A description of the required level of experience of the QA and QC inspectors for every major phase of construction to insure that the QA and QC testing as required by (a)7vi below is properly implemented;

iv. A description of the required level of training, if necessary, to be provided for the contractor's personnel and the inspectors, to insure that the installation methods and procedures and the contingency methods, as required by (a)5i and ii above, are properly implemented and that corrective action will be properly employed, when necessary;

v. A description of the QA and QC testing and inspections for every major phase of construction, which shall include but not be limited to the following:

(1) The frequency of inspections;

(2) The frequency of field testing;

(3) The frequency of sampling for laboratory testing;

(4) The sampling and field testing procedures to be utilized;

(5) The sampling and field testing equipment to be utilized;

(6) The calibration of field testing equipment;

(7) The frequency of system or performance audits;

(8) The sampling size;

(9) The soils or geotechnical laboratory to be used;

(10) The laboratory procedures to be utilized; and

(11) The calibration of laboratory equipment and QA/QC of laboratory procedures.

vi. The QC testing and inspections shall include, but not limited to, the following:

(1)N.J.A.C. 7:26-2A.7(b)4 viii and x;

(2)N.J.A.C. 7:26-2A.7(c)2 v, vii, x and xi;

(3)N.J.A.C. 7:26-2A.7(c)5 iii through ix.

(4)N.J.A.C. 7:26-2A.7(c)6 v;

(5)N.J.A.C. 7:26-2A.7(c)7 vi;

(6)N.J.A.C. 7:26-2A.7(c)9 vii and viii;

(7)N.J.A.C. 7:26-2A.7(c)10 x, xi, xii, and xvii;

(8)N.J.A.C. 7:26-2A.7(d)2 vii and viii;

(9)N.J.A.C. 7:26-2A.7(d)3 viii and xxi;

(10)N.J.A.C. 7:26-2A.7(g)6 and 7; and

(11)N.J.A.C. 7:26-2A.7(i)9 iv and 10i.

vii. The QA and QC plan shall include a report listing technical specifications for all materials to be used in the construction of the sanitary landfill. The report shall describe the product specifications for the materials used, and state the acceptable range of tolerances, if any. The QA and QC plan shall contain a construction contingency plan for the construction phase which shall describe procedures for responding to construction deficiencies resulting from circumstances including, but not limited to, inclement weather, defective materials or construction inconsistent with specifications as demonstrated by quality control testing. The plan shall provide a description of the criteria to be utilized in evaluating deficiencies, selecting corrective action methodology and implementing corrective action.

viii. For liner systems using a geomembrane, the QA and QC plan shall provide for an electrical leak location test of the primary geomembrane, or other equivalent post-construction test method, required at N.J.A.C. 7:26-2A.7(a)19.

8. The O and M manual for the sanitary landfill shall include the following, in addition to the O and M requirements set forth in the general engineering requirements, N.J.A.C. 7:26-2.10(b)9:

i. A description of how the operations and maintenance of the sanitary landfill will meet the requirements set forth in N.J.A.C. 7:26-2A.8;

ii. An occupational health and safety plan established in conformance with the safety and health standards of the Federal Department of Labor, Occupational Safety and Health Administration pursuant to 29 CFR 1926 and 1910 Safety and Health Standards and Industrial Standards;

iii. A community relations plan for facilities with a design capacity of 500 tons per day or greater, identifying the steps that the owner and/or operator will take to transfer information and solicit input from the community in which the facility is located. The community relations plan should contain the following:

(1) An opportunity for two open meetings with local officials, or their representatives, and the general public of the district affected by the proposed facility prior to and during facility construction. The purpose of such meetings will be to inform the community of the nature of operations proposed for the facility, including the progress of construction and projected initial tipping fees;

(2) An opportunity for an annual open meeting with the community or its representatives subsequent to the initial startup of operations. The purpose of these meetings is to allow community input and to provide a forum for exchanging ideas; and

(3) A notification procedure, whereby the community is provided a report of findings in the case of an emergency incident at the facility;

iv. A facility staffing plan containing the following:

(1) A written job description for each position, including duties and performance standards. The description shall include the requisite skills, education, and other qualifications deemed necessary for employees assigned to each position; and

(2) An explanation of the criteria and reasons used in selecting the required number and types of positions;

v. A written training plan which shall include the type and amount of both the initial and annual followup training to be provided to facility personnel;

vi. An emergency contingency plan which delineates procedures for responding to fire, explosions or any unplanned sudden or non-sudden releases of harmful constituents to the air, soil or surface water. The emergency contingency plan shall be submitted to the local police and fire departments, and to the local and county health departments or other offices of emergency management. The emergency contingency plan shall contain:

(1) A description of the actions facility personnel shall take in the event of various emergency situations;

(2) A description of arrangements made with the Department and local police and fire departments which allow for immediate entry into the facility by their authorized representatives should the need arise, such as in the case of personnel responding to an emergency situation; and

(3) A list of names, addresses and phone numbers (office and home) of all persons qualified to act as emergency coordinator for the facility. This list shall be kept up to date. Where more than one person is listed, one shall be named as primary emergency coordinator and the others shall be listed in the order in which they will assume responsibility as alternates; and

vii. A table that summarizes all inspection and maintenance programs, frequencies and reporting requirements for the landfill.

N.J. Admin. Code § 7:26-2A.5

Amended by R.1996 d.578, effective 12/16/1996.
See: 28 New Jersey Register 2114(a), 28 New Jersey Register 5248(a).
Substantially amended (a).
Amended by R.2001 d.86, effective 3/5/2001.
See: 32 New Jersey Register 2536(a), 33 New Jersey Register 880(a).
In (a)2ii, rewrote the second sentence.
Amended by R.2002 d.181, effective 6/17/2002.
See: 33 New Jersey Register 4218(a), 34 New Jersey Register 2049(a).
In (a)5, deleted the footnote and its reference and inserted "shall include" in the second sentence of i, rewrote iii(6) and added iii(19); in (a)7, rewrote vi(3) and added viii; in (a)8, added vii.