Indiana Administrative Code
Title 329 - SOLID WASTE MANAGEMENT DIVISION
Article 10 - SOLID WASTE LAND DISPOSAL FACILITIES
Rule 17 - Municipal Solid Waste Landfill Liner System; Design, Construction, and CQA/CQC Requirements
Section 17-13 - Optional drainage layer filter; design requirements

Universal Citation: 329 IN Admin Code 17-13

Current through September 18, 2024

Authority: IC 13-14-8-7; IC 13-15-2-1; IC 13-19-3-1

Affected: IC 13-18; IC 13-20-2; IC 36-9-30

Sec. 13.

A filter fabric may be incorporated into the drainage layer design to prevent fine soil particles of the protective soil cover from migrating into the drainage medium. The design of the filter must allow gases and water to freely enter the drainage medium and must provide the following:

(1) Adequate permeability, such that kf > 10ks, where:

(A) kf = the geotextile filter permeability; and

(B) ks = the overlying protective cover soil permeability.

(2) Soil particle retention that meets the following criteria, or an equivalent criteria:

(A) O95 of the geotextile < (2) d85 of the protective cover.

(B) O95 of the geotextile > (2) d15 of the protective cover, where:
(i) O95 = the apparent opening size of the geotextile at which ninety-five percent (95%) of the soil particles will be retained;

(ii) d85 = the protective cover soil particle size at which eighty-five percent (85%) of the particles are finer; and

(iii) d15 = the protective cover soil particle size at which fifteen percent (15%) of the particles are finer.

(3) Adequate construction survivability, with construction survivability assessed using accepted industry testing standards, which take into account:

(A) the severity of installation, with consideration of the type of material placed adjacent to the geotextile;

(B) the construction installation technique; and

(C) the minimum strength properties prescribed by applicable industry guidelines with consideration of the severity of the installation.

(4) Adequate chemical and physical resistance to:

(A) the expected waste;

(B) the overlying materials; and

(C) the leachate expected to be generated at the MSWLF.

(5) Any additional requirements necessary to obtain an adequate filter as specified in the construction plans or as determined by the commissioner.

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