Statutes, codes, and regulations
Pennsylvania Code (Rules and Regulations)
Title 25 - ENVIRONMENTAL PROTECTIONPart I - Department of Environmental ProtectionSubpart D - Environmental Health and SafetyArticle IX - Residual Waste ManagementChapter 289 - RESIDUAL WASTE DISPOSAL IMPOUNDMENTSSubchapter E - ADDITIONAL REQUIREMENTS FOR CLASS II RESIDUAL WASTE DISPOSAL IMPOUNDMENTS
ADDITIONAL OPERATING REQUIREMENTS- LEACHATE TREATMENT
Appendix A

Pa. Code tit. 25, pt. I, subpt. D, art. IX, ch. 289, subch. E, ADDITIONAL OPERATING REQUIREMENTS- LEACHATE TREATMENT, app A

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Current through Register Vol. 54, No.43, October 26, 2024
Appendix A

TABLE I

MINIMUM LINER DESIGN STANDARDS

Liner MaterialFunctionMinimum Field Thickness (Units as Specified)Liner Density (Tests as Specified) Remarks
GeosyntheticsPrimary or Secondary Liner30 mil N/A1. A greater thickness may be required depending upon the recommendations of the manufacturer. HDPE liners shall be at least 60 mil.
GeosyntheticsCap30 milN/A 1. A greater thickness may be required depending upon the recommendations of the manufacturer.
Natural & Remolded Clay Secondary Liner, Cap, Composite Component

2 feet

2 feet

1 foot

[GREATER THAN EQUAL TO] 90%*

[GREATER THAN EQUAL TO] 90%*

[GREATER THAN EQUAL TO] 90%*

1. Minimum of 30% fines by weight less than 0.074 mm particle size (#200 sieve).

2. Plasticity Index greater than or equal to 10.

3. No coarse fragments greater than 3/4 inch in diameter.

Sodium bentonite & Bentonite-like materials/soil mixtures Secondary Liner, Cap, Composite Component

2 feet

2 feet

1 foot

[GREATER THAN EQUAL TO] 90%*

[GREATER THAN EQUAL TO] 90%*

[GREATER THAN EQUAL TO] 90%*

1. Minimum of 8% powdered sodium bentonite or manufacturer's recommendations, whichever is greater.

2. No coarse fragments greater than 3/4 inch in diameter.

3. No organic matter.

4. Coarse fragment content (those materials greater than 4.76 mm. in diameter) shall not exceed 10% by weight.

Geosynthetic clay liner (GCL) Composite Component N/A N/A 1. Minimum of 3/4 pound of powdered or granular sodium bentonite per square foot.

* Percentage of maximum when using Standard Proctor method of design (Pa. PTM No. 106, Method B).

Cross References

This table is cited in 25 Pa. Code § 289.242 (relating to cover); 25 Pa. Code § 289.434 (relating to secondary liner); and 25 Pa. Code § 289.436 (relating to primary liner).

TABLE II

MINIMUM LINER DESIGN STANDARDS

Liner MaterialFunctionMinimum Field Thickness (Units as Specified)Liner Density (Tests as Specified)Remarks
GeosyntheticsLiner Cap 30 milN/A 1. A greater thickness may be required depending upon the recommendations of the manufacturer. HDPE liners shall be at least 60 mil.
Natural & Remolded Clay Cap, Composite Component

2 feet

1 foot

[GREATER THAN EQUAL TO] 90%*

[GREATER THAN EQUAL TO] 90%*

1. Minimum of 30% fines by weight less than 0.074 mm particle size (#200 sieve).

2. Plasticity Index greater than or equal to 10.

3. No coarse fragments greater than 3/4 inch in diameter.

Sodium bentonite & Bentonite-like materials/soil mixtures Cap, Composite Component

2 feet

1 foot

[GREATER THAN EQUAL TO] 90%*

[GREATER THAN EQUAL TO] 90%*

1. Minimum of 8% powdered sodium bentonite or manufacturer's recommendations, whichever is greater.

2. No coarse fragments greater than 3/4 inch in diameter.

3. No organic matter.

4. Coarse fragment content (those materials greater than 4.76 mm. in diameter), shall not exceed 10% by weight.

Geosynthetic Clay Liner (GCL) Composite Component N/AN/A 1. Minimum of 3/4 pound of powdered or granular sodium bentonite per square foot.

* Percentage of maximum when using Standard Proctor method of design (Pa. PTM No. 106, Method B).

Pa. Code tit. 25, pt. I, subpt. D, art. IX, ch. 289, subch. E, ADDITIONAL OPERATING REQUIREMENTS- LEACHATE TREATMENT, app A

This table cited in 25 Pa. Code § 289.535 (relating to liner).