Washington Administrative Code › Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508) › Chapter 173-308 - Biosolids management › Section 173-308-160 - Biosolids pollutant limits

Current through Register Vol. 24-14, July 15, 2024
This section sets pollutant concentration limits and cumulative
				pollutant loading rate limits for biosolids that are applied to the
				land.
(1)
Table 1.
Table
			 1 of this section sets the maximum allowable concentration (ceiling limit) of
			 pollutants in biosolids that are applied to the land. Sewage sludge that
			 contains any pollutant listed in Table 1 of this section at a concentration
			 greater than the allowable ceiling limit is not biosolids, is a solid waste,
			 and may not be applied to the land.
(2)
Table 2.
Table 2 of this
			 section sets the maximum quantities of pollutants that may be added to an area
			 of land, also referred to as the cumulative pollutant loading rate. The
			 cumulative pollutant loading rates in Table 2 apply when the concentration of
			 any pollutant in biosolids that are applied to the land exceeds the allowable
			 pollutant concentration limit in Table 3 of this section.
(a) A person may not apply bulk biosolids
			 subject to the cumulative pollutant loading rates in Table 2 of this section to
			 a land application site, if any of those rates have been reached on the
			 site.
(b) Before bulk biosolids
			 subject to the cumulative pollutant loading rates in Table 2 of this section
			 are applied to the land, the person who proposes to apply the bulk biosolids
			 must contact the local health jurisdiction and the department to determine
			 whether bulk biosolids subject to the cumulative pollutant loading rates were
			 applied to the site before the effective date of this chapter.
(i) If bulk biosolids subject to the
			 cumulative pollutant loading rates in Table 2 of this section have been applied
			 to the site since July 20, 1993, and the cumulative amount of each pollutant
			 applied to the site since that date is known, in addition to any amount
			 subtracted in (b)(iii) of this subsection, the amount previously applied must
			 be subtracted from the cumulative pollutant loading rate for each pollutant, to
			 determine the remaining amount of pollutant that may be applied to the
			 site.
(ii) If bulk biosolids
			 subject to the cumulative pollutant loading rates in Table 2 of this section
			 have been applied to the site since July 20, 1993, and the cumulative amount of
			 each pollutant applied to the site in the bulk biosolids since that date is not
			 known, additional biosolids subject to the cumulative pollutant loading rates
			 in Table 2 of this section may not be applied to the site.
(iii) If bulk biosolids were applied to the
			 site prior to July 20, 1993, and the cumulative amount of each pollutant
			 applied to the site prior to that date can be determined, in addition to any
			 amount subtracted in (b)(i) of this subsection, the amount applied must be
			 subtracted from the cumulative pollutant loading rate for each pollutant, to
			 determine the remaining amount of pollutant that may be applied to the
			 site.
(iv) If bulk biosolids
			 subject to the cumulative pollutant loading rates in Table 2 of this section
			 have not been applied to the site, the cumulative amount of each pollutant
			 listed in Table 2 of this section may be applied to the site.
(v) Any person who applies bulk biosolids to
			 the land, which are subject to the cumulative pollutant loading rates in Table
			 2 of this section, must provide written notice prior to the initial application
			 of bulk biosolids to the land. Notice must be submitted to the department, and
			 to any local health jurisdiction in whose jurisdiction the biosolids will be
			 applied. The department and the local health jurisdiction must retain and
			 provide access to the notice. The notice must include the following:
(A) The location of each site, either by
			 street address, the latitude and longitude of the approximate center, or the
			 section, township and range of each quarter section,
and
a map(s)
			 with the application area(s) clearly shown.
(B) The name, address, telephone number, and
			 National Pollutant Discharge Elimination System (NPDES) or state waste
			 discharge permit number and state biosolids permit number (if applicable) of
			 the person who prepared the biosolids and also of the person who applies (if
			 applicable) the bulk biosolids.