Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 391 - DESIGN CRITERIA FOR SLUDGE APPLICATION ON LAND
Subpart E - SAMPLE COLLECTION AND ANALYSIS
Section 391.503 - Analyses of Sludge Samples
Universal Citation: 35 IL Admin Code ยง 391.503
Current through Register Vol. 48, No. 38, September 20, 2024
a) It is recommended that the following parameters be analyzed according to the referenced sections in Standard Methods for Examination of Water and Wastewater (14th ed), or as approved in 40 CFR 136. Other analyses or methodologies are acceptable provided equivalent results are obtainable. The permittee or applicant shall demonstrate that equivalent results are obtainable based on the nature of the test methodology, the nature of the parameter and the level of statistical accuracy.
1) Ammonia nitrogen, Part 418(D)
2) Total Kjeldahl nitrogen, Part 421
(Macro-Kjeldahl Method in 15th Edition)
3) pH, part 424, glass electrode
method
4) Volatile acids (total
organic acids), Part 504-A, chromatographic method
5) % total solids, Part 208-G, "Procedure",
Subpart 3.a.l. "Total Residue"
6) %
volatile solids, Part 224-G, "Procedure", Subpart 3.a.2. "Volatile
Residue"
7) Phosphorus (total),
Part 425-C
8) Potassium (total),
Part 317-B
b) Heavy Metals
1) Metals Other Than Mercury
A) Homogenize wet sludge sample in blender,
ultrasonic homogenizer, or other suitable device.
B) An aliquot of homogenized sludge suitable
to provide 5-10 grams of dry material is dried at 103° C for 48
hours.
C) Accurately weigh about 1
gram of dry sludge to the nearest 0.1 mg and place in a "Tallform" beaker
containing 20 ml of reagent grade nitric acid.
D) Place a watch glass over the mouth of the
beaker, and warm the mixture on a hot plate, allowing the acid to gently reflux
off the watch glass.
E) Reflux the
mixture until a clear solution is obtained (45-50 minutes). Sand and other
non-digestible material present in the sample will settle out.
F) Using quantitative technique, filter the
cooled, digested sample, and make the filtrate up to 100.0 ml in a volumetric
flask.
G) Analyze according to
USEPA procedures specified in "Methods for Chemical Analysis of Water and
Waste," March 1979.
H) Repeat steps
(C) through (G) on two additional 1 gram samples. It is the intent that
triplicate analysis be performed.
I) Report all results.
2) Mercury: Tentative procedure
Analyze three separate portions according to USEPA procedure "Mercury in Sediment".
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