Section 20260 - SWRCB - Class III: Landfills for Nonhazardous Solid Waste. (C15: s2533) (California Code of Regulations)

§ 20260. SWRCB - Class III: Landfills for Nonhazardous Solid Waste. (C15: s2533)

(a) General -Class III landfills shall be located where site characteristics provide adequate separation between nonhazardous solid waste and waters of the state. The classification criteria in this section shall be used for reclassification of existing landfills at disposal sites approved as Class II-1 or II-2 (under previous versions of these SWRCB regulations) and any expansions of such landfills.

(b) Geologic Setting.

(1) MSW landfills are subject to the SWRCB-promulgated waste containment requirements of this subdivision and of SWRCB Resolution No. 93-62. New Class III and existing Class II-2 landfills shall be sited where soil characteristics, distance from waste to ground water, and other factors will ensure no impairment of beneficial uses of surface water or of ground water beneath or adjacent to the landfill. Factors that shall be evaluated include:

(A) size of the landfill:

(B) hydraulic conductivity and transmissivity of underlying soils;

(C) depth to ground water and variations in depth to ground water;

(D) background quality of ground water;

(E) current and anticipated use of the ground water; and

(F) annual precipitation.

(2) Where consideration of the factors in ¶(b)(1) indicates that site characteristics alone do not ensure protection of the quality of ground water or surface water, Class III landfills shall be required to have a single clay liner with hydraulic conductivity of 1x10-6 cm/sec or less.

(c) Flooding -New Class III and existing Class II-2 landfills shall be designed, constructed, operated, and maintained to prevent inundation or washout due to floods with a 100-year return period. MSW landfills are also subject to any more-stringent flood plain and wetland siting requirements referenced in SWRCB Resolution No. 93-62 (i.e., see ss 258.11, 258.12, and 258.16 of 40CFR258).

(d) Ground Rupture -New Class III and expansions of existing Class II-2 landfills shall not be located on a known Holocene fault. However, existing landfills assigned a Class II-2 designation under previous versions of the SWRCB regulations may be located on a known Holocene fault, provided that the Unit's containment structures are capable of withstanding ground accelerations associated with the maximum probable earthquake (see s20370).

(e) Rapid Geologic Change -New Class III and unreclassified existing Class II-2 landfills can be located within areas of potential rapid geologic change only if the RWQCB finds that the Unit's containment structures are designed, constructed, and maintained to preclude failure. MSW landfills are also subject to any more-stringent unstable area siting requirements referenced in SWRCB Resolution No. 93-62 (see s258.15 and s258.16 of 40CFR258).

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TABLE 3.1 SWRCB's GEOLOGIC AND SITTING CRITERIA FOR CLASSIFIED UNITS

Unit Classification

Site

           

Charac-

[Reserved [FN1,4]

  

Reclassification of

  

teristics

  

New Class II [FN2]

Existing Class II

New Class III [FN3]

Geologic

  

Substantial isolation from ground

As for new Class II

Adequate separation

Setting

  

water; see s20250(b)

  

from ground water;

           

characteristics other than

           

hydraulic conductivity will be

           

considered; see s20260(b).

Flooding

  

<<----------

No Siting

---------->>

        

Restriction [FN5]

  

Ground

  

200' setback from known

Exempt [FN5], except

Not located on known

Rupture

  

Holocene fault.

that expansions are

Holocene fault.

        

as for new Class II.

  

Rapid

  

<<----------

No Siting

---------->>

Geologic

     

Restriciton [FN5]

  

Change

           

Tidal

  

<<------------No siting restriction------------->>

     

Waves [FN6]

           

[FN1] [Reserved.] Note: These standards removed because thay apply only to Class I Units (see Chapter 15, Div. 3., Title 23, CCR).

[FN2] This category is defined in s20250(a).

[FN3] This category is defined in s20260(a).

[FN4] [Reserved.] Note: Left in Ch-15. Applies only to Class I Units.

[FN5] Exemption from siting criteria does not release dischargers from the obligation to protect Units from the geologic or environmental hazards involved. Exemption is conditions on such protection.

[FN6] The term "Tidal Waves" includes tsunamis, seiches, and surge condition.

(1. New section and Table 3.1 filed 6-18-97; operative 7-18-97 (Register 97, No. 25).)

Note: Authority cited: Section 1058, Water Code. Reference: Sections 13172 and 13360, Water Code; and Section 43103, Public Resources Code.

Disclaimer: Lawrina makes great effort to keep legal information accurate and updated. However, we cannot guarantee that Section 20260 SWRCB - Class III: Landfills for Nonhazardous Solid Waste. (C15: s2533) is an exact copy of the official text as updates may have been made. Please check the accuracy of the information provided against the official resources.

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