Md. Code Regs. 26.04.07.16

Current through Register Vol. 51, No. 24, December 2, 2024

Section 26.04.07.16 - Sanitary Landfills - Rubble Landfills - Phase III

A. Phase III-Engineering Plans and Specifications. Ten complete sets of plans and engineering reports covering the proposed project, prepared, signed, and bearing the seal of a registered professional engineer shall be submitted to the Approving Authority. These plans and specifications shall include the following information in sufficient detail to permit a comprehensive review of the project:

(1) A map which designates the property boundaries, the actual area to be used for filling, and existing and proposed structures and on-site roads.

(2) A description of any vehicle weighing facilities, communications (telephones, radios), maintenance and equipment storage facilities, and water supply and sewerage systems. On-site water supply and sewerage systems shall be approved by the Approving Authority.

(3) A description of the:

(a) Types of solid waste:

(i) To be accepted,

(ii) Not to be accepted;

(b) Area and population to be served by the facility.

(4) The anticipated quantities of solid waste to be accepted and the calculations used to determine the useful life of the facility.

(5) Proposed methods of collecting and reporting data on the quantities and types of solid waste received and for revising facility life expectancy projections.

(6) The volume and type of available cover material, the calculated volume of earth needed for periodic, intermediate, and final cover, the location of earth stockpiles, and provisions for saving topsoil for use as final cover.

(7) Proposed means of controlling unauthorized access to the site.

(8) Proposed operating procedures including:

(a) Hours and days of operation;

(b) Number and types of equipment to be used;

(c) Number of employees and their duties;

(d) Provisions for fire prevention and control;

(e) Means of preventing public health hazards and nuisances from blowing paper, odors, rodents, vermin, noise, and dust; and

(f) Proposed method of daily operation including wet weather operation.

(9) The location and depth of solid waste cells and the sequence of filling.

(10) Natural or artificial screening to be used.

(11) Methods of controlling on-site drainage, drainage leaving the site, and drainage onto the site from adjoining areas. Erosion and sediment control provisions shall be approved by the local soil conservation district and satisfy the requirements of Environment Article, Title 4, Subtitle 1, and COMAR 26.09.01.

(12) A contingency plan for preventing or mitigating the pollution of the waters of this State.

(13) Proposed methods for covering and stabilizing completed areas.

(14) A system for monitoring the quality of the waters of the State around and beneath the site, including the location and types of monitoring stations, and the methods of construction of monitoring wells. Wells shall be installed by a State licensed well driller in accordance with COMAR 26.04.04.

(15) If the Department determines that contamination of waters of the State has occurred or is liable to occur as a result of operation of the landfill, the Approving Authority may:

(a) Require the permit holder to periodically collect and analyze ground water or surface waters at the permitted site and to submit the results to the Approving Authority;

(b) Specify the number and location of the sampling stations, the frequency of the analyses, the sampling and analyses procedures, the pollutants to be monitored, and the reporting period.

(16) A schedule for implementing construction and implementation of the operation plans and engineering specifications once the refuse disposal permit has been issued.

(17) A landfill closure and post-closure plan to be followed over a period of not less than 5 years after application of final cover.

(18) The name, address, and telephone number of the person or agency responsible for the maintenance and operation of the site. Changes to this information shall be submitted to the Approving Authority once effected.

(19) An engineered design, as described in §C of this regulation, for a liner system and leachate collection system for the proposed rubble landfill based upon geotechnical information developed in Regulations .14 and .15 of this chapter.

(20) A proposed method, engineering specifications, and plans for the collection, management, treatment, and disposal of leachate generated at the facility, including the calculations used to determine the estimated quantities of leachate to be generated, managed, stored, treated, and disposed.

B. Phase III-Plan Review. The plan review shall be conducted in accordance with the provisions of Regulation .08D of this chapter.

C. Liner and Leachate Collection System.

(1) The design of the liner and leachate collection system shall comply with the minimum requirements of this section.

(2) A liner system shall be designed, constructed, and installed to contain and facilitate the collection of leachate generated in the landfill in order to prevent the migration of pollutants out of the landfill to the adjacent subsurface soil, ground water, or surface water. A liner may be constructed of natural earthen materials excavated from the site or imported from another location. A liner may also be constructed of a synthetic or manufactured membrane material.

(3) A liner system shall:

(a) Be constructed of materials having sufficient strength and thickness to prevent failure from pressure gradients, physical contact with waste or leachate, climatic conditions, installation, or daily landfilling operation;

(b) Include a liner constructed with a minimum thickness of 1 foot of clay or other natural material having an in-place permeability of less than or equal to 1 x 10^-7 centimeters/second, or one or more unreinforced synthetic membranes with a combined minimum thickness of 50 mil or a single reinforced synthetic membrane with a minimum thickness of 30 mil which has a permeability less than or equal to 1 x 10^-10 centimeters/second;

(c) Include a liner installed over a prepared subbase, free of objects which could damage the liner material, with a minimum thickness of 2 feet and having a permeability less than or equal to 1 x 10^-5 centimeters/second;

(d) Be installed to cover all surrounding earth likely to be in contact with the waste or leachate; and

(e) Be constructed with a minimum slope of 2 percent to facilitate the movement of leachate towards the leachate collection system and to prevent the ponding of leachate on the landfill floor.

(4) Under §C(3)(c) of this regulation, the subbase shall be constructed to support the liner and be resistant to pressure gradients above and below the liner in order to prevent failure of the liner due to settlement, compression, uplift, puncturing, tearing, cutting, or landfilling operations.

(5) Upon completion of the installation and testing, the liner and leachate collection system shall be covered with a minimum of 2 feet of sized gravel or other highly permeable material to provide for the free passage of leachate to the liner and to serve as a protective layer for the liner and leachate collection systems.

(6) A liner system shall be located entirely above the composite high ground water elevation as determined in Regulation .15A(4) of this chapter, and the elevation of bedrock as determined in Regulation .15A(6) of this chapter. A minimum vertical buffer distance shall be required between the bedrock elevation or the maximum expected ground water elevation, whichever is higher, and the bottom of the liner system including the subbase as specified in this regulation, as follows:

(a) Except as specified in §C(6)(b) of this regulation, the minimum vertical buffer distance shall be 3 feet;

(b) In Queen Anne's, Talbot, Caroline, Dorchester, Wicomico, Somerset, and Worcester counties, the minimum vertical buffer distance shall be 1.5 feet unless otherwise specified by the Approving Authority, which shall establish a minimum vertical buffer distance of 1.5 to 3.0 feet.

(7) An engineered leachate collection and removal system, located immediately above the liner, shall be designed, constructed, operated, and maintained to collect and remove leachate from the landfill. The leachate collection and removal system shall be:

(a) Constructed of materials that are chemically resistant to the waste managed in the landfill and the leachate expected to be generated;

(b) Of sufficient strength and thickness to prevent collapse or failure from loadings applied by overlying wastes, waste cover materials, and equipment used for landfilling operations;

(c) Designed and operated to function without clogging;

(d) Designed and operated to ensure that the depth of leachate over the liner does not exceed 30 centimeters (1 foot); and

(e) Designed to operate solely by the force of gravity in all areas where the system will directly underlie solid waste.

Md. Code Regs. 26.04.07.16

Regulations .16, Solid Waste Management, adopted effective March 7, 1988 (15:5 Md. R. 618)
Regulation .16 amended effective September 22, 1997 (24:17 Md. R. 1342)