Chemical properties of water treatment residuals Chemical properties of water treatment residuals

Chemical properties of water treatment residuals. Values are medians for all data collected from the literature.
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Chemical	Type of water treatment residual		Tier 2 Soil Reference Value (mg/kg)	Soil Leaching Value (mg/kg)
	Aluminum and iron	Calcium
Aluminum	51000	2211	100000
Ammonia		nd
Antimony	nd	1	100	10.8
Arsenic	35	4.3	20	11.6
Barium	205	30.3	18000	3370
Beryllium	1.55	nd	230	5.44
Boron		nd	47000	124
Cadmium	0.8	0.2	200	17.6
Calcium	16700	494367
Carbon	172500	114000
Chromium III	52.5	1.6	650	200000
Copper	48	2	9000	1400
Iron	51000	956.5	75000
Kjeldahl nitrogen		nd
Lead	49.5	2.8	700	5400
Magnesium	2300	8530
Manganese	1950	73	8100	260
Mercury	nd	nd	1.4	6.58
Molybdenum	2	0.2		32.2
Nickel	32.5	1.6	2500	352
Nitrogen	8350	330
Phosphorus	2995	74
Potassium	5550	846
Selenium	nd	1	1300	5.28
Silver	nd	1	1300	15.7
Sodium	855	335
Strontium	45	274	100000	5620
Vanadium	68	3	250	8
Zinc	183	5.4	75000	6010

nd=not detected. Reporting limits were below SRVs and SLVs.
SLV assumes 3 foot separation from groundwater and a media depth of 3 feet.
Numbers in bold exceed one or more of the risk criteria.
References: Turner et al. 2019; Elliott et al 2002; Lang, 2009; Shrestha et al, 2019; Elliott et al., 1990; 2009; EPA, 2011; Barr Engineering, 2014; Wang et al., 2014