South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-9 - Water Pollution Control Permits
Subchapter 61-9.503 - STANDARDS FOR THE USE OR DISPOSAL OF SEWAGE SLUDGE
Part C - SURFACE DISPOSAL
Section 61-9.503.C.23 - Pollutant limits (other than domestic septage)

Universal Citation: SC Code Regs 61-9.503.C.23

Current through Register Vol. 48, No. 9, September 27, 2024

(a) Active sewage sludge unit without a liner and leachate collection system

(1) Except as provided in section 503.503.23(a)(2)3(a)(2) and section503.23(b)(b), the concentration of each pollutant listed in Table 1 of section503.23 in sewage sludge placed on an active sewage sludge unit shall not exceed the concentration for the pollutant in Table 1 of section503.23(a)(2).

TABLE 1 OF Section503.23 - POLLUTANT CONCENTRATIONS - ACTIVE SEWAGE SLUDGE UNIT WITHOUT A LINER AND LEACHATE COLLECTION

Pollutant	Concentration (milligrams per kilograms) Dry weight basis
Arsenic	73
Chromium	600
Nickel	420

(2) Except as provided in section503.23(b)(b), the concentration of each pollutant listed in Table 1 of section503.23 in sewage sludge placed on an active sewage sludge unit whose boundary is less than 150 meters from the property line of the surface disposal site shall not exceed the concentration determined using the following procedure.

(i) The actual distance from the active sewage sludge unit boundary to the property line of the surface disposal site shall be determined.

(ii) The concentration of each pollutant listed in Table 2 of section503.23 in the sewage sludge shall not exceed the concentration in Table 2 of section503.23 that corresponds to the actual distance in section503.23(a)(2)(i)(a)(2)(i).

TABLE 2 OF Section503.23 - POLLUTANT CONCENTRATIONS - ACTIVE SEWAGE SLUDGE UNIT WITHOUT A LINER AND LEACHATE COLLECTION SYSTEM THAT HAS A UNIT BOUNDARY TO PROPERTY LINE DISTANCE LESS THAN 150 METERS

Pollutant concentration (Dry weight Basis)
Unit boundary to property	Arsenic	Chromium	Nickel
line distance. (meters)	(mg/kg)	(mg/kg)	(mg/kg)
0 to less than 25	30	200	210
25 to less than 50	34	220	240
50 to less than 75	39	260	270
75 to less than 100	46	300	320
100 to less than 125	53	360	390
125 to less than 150	62	450	420

(b) Active sewage sludge unit without a liner and leachate collection system -site-specific limits

(1) At the time of permit application, the owner/operator of a surface disposal site may request site-specific pollutant limits in accordance with section503.23(b)(2)(b)(2) for an active sewage sludge unit without a liner and leachate collection system when the existing values for site parameters specified by the Department are different from the values for those parameters used to develop the pollutant limits in Table 1 of section503.23 and when the Department determines that site-specific pollutant limits are appropriate for the active sewage sludge unit.

(2) The concentration of each pollutant listed in Table 1 of section503.23 in sewage sludge placed on an active sewage sludge unit without a liner and leachate collection system shall not exceed either the concentration for the pollutant determined during a site-specific assessment, as specified by the Department, or the existing concentration of the pollutant in the sewage sludge, whichever is lower.

(c) Additional parameters may be required in the initial analysis and subsequent monitoring thereafter, but such needs will be assessed on an individual project basis. Any pollutant required for monitoring under effluent guidelines ( 40 CFR Part 136; Sub Chapter N ( 40 CFR Part 400 through 402 and 404 through 471)) may be required (in a permit) to be monitored for in the sewage sludge.

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