| (a) The engineering report must identify the final
use or final disposal of the sludge. The use, disposal, and transportation
of sludge must be conducted in accordance with the requirements contained
in Chapter 312 of this title (relating to Sludge Use, Disposal, and
Transportation) or in Chapter 330 of this title (relating to Municipal
Solid Waste).
(b) Quantities of Sludge. The quantity of solids generated
by the treatment process must be estimated using a mass-balance approach
or actual data from a similar full-scale wastewater treatment facility
or pilot study. The methods, calculations, and analyses used to estimate
quantities of solids must be included in the engineering report.
(c) Final Disposition. The sludge use or disposal
option must be based on the pathogen and vector attraction characteristics
of the sludge.
(d) Sludge Constituents.
(1) The concentrations of metals in sludge must be
determined using methods approved in 40 Code of Federal Regulations
§136.3 and must be less than the levels specified in §312.63
of this title (relating to Metal Limits (Other Than Domestic Septage)).
(2) A sludge processing system must reduce pathogens
in sludge to levels that comply with §312.82 of this title (relating
to Pathogen Reduction).
(3) A sludge processing system must produce digested
sludge that complies with §312.83 of this title (relating to
Vector Attraction Reduction).
(e) Emergency Provisions for Sludge Disposal. The design
of a sludge processing system must include a secondary method of sludge
disposal to use in the event of conditions that prevent the use of
a wastewater treatment facility's primary use or primary disposal
method. The secondary sludge disposal method must be included in the
engineering report.
(f) Weather Factors. Weather factors such as rainfall,
wind conditions, and humidity must be considered as process selection
and storage constraints in the determination of the use or disposal
of sludge.
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