Leach Table 1. Table summarizing analytical results for solutions leached from WTC dust and beam coating samples. Details of the leach test methods are summarized in the text.

Leach Table 1
	Outdoor dust samples
	WTC-01-2	WTC-01-3	WTC-01-05	WTC-01-06	WTC-01-14
pH	10.1	9.51	9.9	9.65	9.68
Specific Conductance mS/cm	1.58	1.31	1.9	2.01	2.03
Chloride mg/L	7.8	3.7	nm	nm	5.1
Fluoride mg/L	<.8	<.8	nm	nm	<1.6
Nitrate mg/L	1.5	0.5	nm	nm	1.4
Calcium mg/L	388	314	577	523	544
Magnesium mg/L	1.75	2.83	3.2	3.65	3.52
Potassium mg/L	6	3.8	7.71	6.33	6.9
Silicon mg/L	5.8	4.5	8.1	5.9	6.4
Phosphorous mg/L	0.05	0.1	0.04	0.03	0.05
Sodium mg/L	6.1	2.84	7.69	5.76	3.05
Sulfate mg/L	834	694	1210	1040	1250
Aluminum µg/L	111	44.6	24.3	26	30.3
Antimony µg/L	33.1	22.9	46.3	42	35.9
Arsenic µg/L	1	1	< 3	< 3	1
Barium µg/L	36.5	28.4	38.3	36	45.1
Beryllium µg/L	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05
Bismuth µg/L	< 0.005	0.01	< 0.005	< 0.005	0.01
Cadmium µg/L	0.44	0.26	1.08	0.82	0.37
Cerium µg/L	< 0.01	0.03	0.02	0.02	0.01
Cesium µg/L	0.08	0.05	0.04	0.04	0.06
Chromium µg/L	25.9	9	25.1	18.2	31.4
Cobalt µg/L	1.23	0.72	1.04	1.02	1.15
Copper µg/L	19.2	19.8	22.4	13.5	11.4
Gallium µg/L	0.23	0.1	0.1	0.1	0.1
Germanium µg/L	0.07	0.09	0.1	0.08	0.07
Iron µg/L	< 50	< 50	< 50	< 50	< 50
Lanthanum µg/L	< 0.01	0.01	< 0.01	0.01	< 0.01
Lead µg/L	0.64	0.5	0.5	0.51	0.97
Lithium µg/L	11.2	4.1	11.2	9.4	9.8
Manganese µg/L	1	3.2	2	3.8	2.3
Mercury ng/L	nm	nm	18	7	nm
Molybdenum µg/L	56.8	14	45.7	42.2	30.8
Nickel µg/L	18.1	14.4	21.4	19.4	25.2
Niobium µg/L	< 0.02	0.03	0.1	0.1	0.02
Rubidium µg/L	12.6	8.08	12.4	12.9	14.1
Scandium µg/L	1.8	1.3	2.2	1.9	1.9
Selenium µg/L	2.5	1	< 5	< 5	1.9
Silver µg/L	< 3	< 3	nm	nm	< 3
Strontium µg/L	834	561	1150	1100	1230
Thallium µg/L	< 0.05	< 0.05	0.2	0.06	< 0.05
Thorium µg/L	0.04	0.09	0.8	0.37	0.06
Titanium µg/L	17.9	13.4	18.9	18.7	25.7
Uranium µg/L	0.03	0.15	0.08	0.09	0.06
Vanadium µg/L	6.2	6	11.8	8.8	9.7
Yttrium µg/L	< 0.01	< 0.01	0.08	0.08	0.11
Zinc µg/L	10.7	7.7	15.6	20.9	11.6
Zirconium µg/L	0.07	0.1	0.5	0.3	0.08
nm - not measured; ppm - parts per million; mg/L - milligrams per liter; µg/L - micrograms per liter; ng/L - nanograms per liter; mS/cm - milliSiemens per centimeter
Leach Table 1, continued
	Outdoor dust samples, continued
	WTC-01-15	WTC-01-16	WTC-01-17	WTC-01-21	WTC-01-22
pH	10	8.22	9.47	9.98	10.4
Specific Conductance mS/cm	2.01	2.08	1.96	2.02	2.02
Chloride mg/L	3.4	8.5	nm	7.8	8.1
Fluoride mg/L	<1.6	<1.6	nm	<1.6	<1.6
Nitrate mg/L	1.5	<1.6	nm	2.4	1.5
Calcium mg/L	528	526	517	549	529
Magnesium mg/L	1.71	20.2	2.54	2.61	2.12
Potassium mg/L	5.9	9.2	4.83	7.7	5.2
Silicon mg/L	4.9	4.3	2	5.8	5.4
Phosphorous mg/L	0.02	0.03	< 0.01	0.04	0.05
Sodium mg/L	2.65	5.09	4.81	4.11	5.69
Sulfate mg/L	1230	1350	1110	1270	1170
Aluminum µg/L	53.9	6.33	50.6	53.6	153
Antimony µg/L	15.3	28.6	11.2	21.2	17
Arsenic µg/L	< 1	2	< 3	1	< 1
Barium µg/L	28.9	23.2	17.5	33.9	32.2
Beryllium µg/L	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05
Bismuth µg/L	0.01	0.01	< 0.005	0.006	0.01
Cadmium µg/L	0.55	0.39	0.47	0.25	0.16
Cerium µg/L	0.01	0.02	0.02	0.01	0.02
Cesium µg/L	0.05	0.05	0.03	0.06	0.05
Chromium µg/L	42	20.8	17.4	19.3	27.7
Cobalt µg/L	1.02	1.29	1.04	1.16	0.98
Copper µg/L	10.2	15.6	14.4	6.2	9.6
Gallium µg/L	0.1	0.05	0.08	0.2	0.27
Germanium µg/L	0.06	0.1	0.05	0.05	0.04
Iron µg/L	< 50	< 50	< 50	< 50	< 50
Lanthanum µg/L	< 0.01	0.01	< 0.01	< 0.01	< 0.01
Lead µg/L	1.5	0.4	0.3	1.1	0.68
Lithium µg/L	6.4	11.2	6.9	7.4	7.8
Manganese µg/L	1.2	35.1	1.7	1.4	1
Mercury ng/L	nm	nm	8	nm	nm
Molybdenum µg/L	10.6	46.3	35.5	10.7	7.42
Nickel µg/L	22.2	25	21.9	24.6	24.8
Niobium µg/L	0.02	0.02	0.07	0.04	0.04
Rubidium µg/L	12.4	14.1	8.91	14.1	10
Scandium µg/L	1.5	1.2	0.8	1.7	1.5
Selenium µg/L	< 1	3	< 5	2.2	1.6
Silver µg/L	< 3	< 3	nm	< 3	< 3
Strontium µg/L	1060	999	1000	1020	943
Thallium µg/L	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05
Thorium µg/L	0.06	0.24	0.2	0.1	0.17
Titanium µg/L	24.8	25.1	19.4	25.9	24
Uranium µg/L	0.03	0.52	0.01	0.02	0.02
Vanadium µg/L	6.6	6.5	2.7	8	5.5
Yttrium µg/L	0.1	0.1	0.05	0.1	0.07
Zinc µg/L	10.6	24.1	12.7	9.6	6.5
Zirconium µg/L	0.2	0.2	0.09	0.2	0.2
nm - not measured; ppm - parts per million; mg/L - milligrams per liter; µg/L - micrograms per liter; ng/L - nanograms per liter; mS/cm - milliSiemens per centimeter
Leach Table 1, continued
	Outdoor dust samples, continued
	WTC-01-25	WTC-01-27	WTC-01-28	WTC-01-30	WTC-01-34
pH	9.37	10	9.93	9.63	9.8
Specific Conductance mS/cm	2.16	2.31	2.02	1.9	2.02
Chloride mg/L	37	52	12	nm	nm
Fluoride mg/L	<1.6	<1.6	<1.6	nm	nm
Nitrate mg/L	11	3	3.2	nm	nm
Calcium mg/L	558	568	553	461	524
Magnesium mg/L	6.15	2.01	2.85	5.27	3.2
Potassium mg/L	11.7	9.7	11.3	3.22	5.06
Silicon mg/L	8.1	7.2	8.6	5	4.2
Phosphorous mg/L	0.06	0.04	0.04	0.02	0.02
Sodium mg/L	12.9	12.7	5.57	4.28	2.76
Sulfate mg/L	1240	1240	1250	986	1180
Aluminum µg/L	23.8	33.4	45	22.6	27.8
Antimony µg/L	73.6	25.5	43.6	35.5	33.5
Arsenic µg/L	3.2	3	2	< 3	< 3
Barium µg/L	58.4	38.6	43.5	53.9	32.4
Beryllium µg/L	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05
Bismuth µg/L	0.01	0.01	0.007	< 0.005	< 0.005
Cadmium µg/L	1.56	0.38	0.54	1.06	1.04
Cerium µg/L	0.02	0.02	0.02	0.02	0.02
Cesium µg/L	0.08	0.05	0.1	0.04	0.03
Chromium µg/L	24.4	15.7	34.5	26.1	16.2
Cobalt µg/L	3.18	1.17	1.25	0.72	0.87
Copper µg/L	39	21.5	9	14	10.6
Gallium µg/L	0.1	0.2	0.2	0.1	0.1
Germanium µg/L	0.2	0.05	0.08	0.09	0.08
Iron µg/L	< 50	< 50	< 50	< 50	< 50
Lanthanum µg/L	0.01	< 0.01	0.02	0.01	< 0.01
Lead µg/L	11.5	0.4	0.83	0.2	0.5
Lithium µg/L	29.7	24.3	11.2	9.6	7.9
Manganese µg/L	4.9	1	2	3.3	1.8
Mercury ng/L	nm	nm	nm	12	10
Molybdenum µg/L	140	126	50.4	30.6	27.9
Nickel µg/L	32.1	27	25.9	18.1	20.7
Niobium µg/L	0.03	0.06	0.03	0.07	0.06
Rubidium µg/L	19.3	14.9	25	9.26	10.8
Scandium µg/L	2.2	2.1	2.5	1.6	1.4
Selenium µg/L	7.4	8.8	3.5	< 5	< 5
Silver µg/L	< 3	< 3	< 3	nm	nm
Strontium µg/L	1240	1440	1160	1540	1070
Thallium µg/L	< 0.05	< 0.05	< 0.05	< 0.05	< 0.05
Thorium µg/L	0.13	0.16	0.08	0.12	0.1
Titanium µg/L	25.5	25	26.3	16.5	18.9
Uranium µg/L	0.13	0.008	0.04	0.09	0.03
Vanadium µg/L	13.2	16.1	12.2	7.2	7
Yttrium µg/L	0.11	0.09	0.12	0.08	0.07
Zinc µg/L	11	8.4	12.1	5.3	12.2
Zirconium µg/L	0.2	0.2	0.2	0.2	0.1
nm - not measured; ppm - parts per million; mg/L - milligrams per liter; µg/L - micrograms per liter; ng/L - nanograms per liter; mS/cm - milliSiemens per centimeter
Leach Table 1, continued
	Indoor dust samples		Girder coatings
	WTC-01-20	WTC-01-36	WTC-01-8	WTC-01-9
pH	11.8	11.8	INS	10.8
Specific Conductance mS/cm	3.41	3.4	INS	1.43
Chloride mg/L	45	40	16	3
Fluoride mg/L	<1.6	<1.6	<.8	<.8
Nitrate mg/L	9.1	17	62	4.1
Calcium mg/L	718	888	528	336
Magnesium mg/L	0.11	0.08	10.3	1.1
Potassium mg/L	10.9	12.3	3	1
Silicon mg/L	3.4	3.2	6.7	11.3
Phosphorous mg/L	0.09	0.09	< 0.01	< 0.01
Sodium mg/L	15.3	18.3	2.1	1.54
Sulfate mg/L	1320	1640	1090	674
Aluminum µg/L	611	702	10.8	121
Antimony µg/L	20.8	17.1	8.72	7.97
Arsenic µg/L	3.3	3.3	< 3	< 3
Barium µg/L	61.7	57.2	22.8	10.4
Beryllium µg/L	< 0.05	< 0.05	< 0.05	< 0.05
Bismuth µg/L	0.02	< 0.005	< 0.005	< 0.005
Cadmium µg/L	0.18	0.18	0.02	0.02
Cerium µg/L	< 0.01	0.01	0.26	0.4
Cesium µg/L	0.09	0.08	0.02	< 0.01
Chromium µg/L	69.4	109	18	408
Cobalt µg/L	1.84	2.21	1.27	0.75
Copper µg/L	15.1	33.6	5.6	3.5
Gallium µg/L	0.59	0.97	0.08	0.38
Germanium µg/L	0.05	0.07	0.1	< 0.02
Iron µg/L	< 50	< 50	< 50	< 50
Lanthanum µg/L	0.01	0.01	0.05	0.18
Lead µg/L	5.8	10.9	0.4	0.3
Lithium µg/L	18.5	19.5	1.3	0.3
Manganese µg/L	1.3	1.7	5.5	2.1
Mercury ng/L	130	125
Molybdenum µg/L	73.8	72.9	1.74	1.18
Nickel µg/L	36.2	42.6	24.9	16.6
Niobium µg/L	0.08	0.05	0.08	< 0.02
Rubidium µg/L	17.7	20.8	3.54	1.35
Scandium µg/L	1.2	2.1	3.6	5.5
Selenium µg/L	10.5	10.3	< 5	< 5
Silver µg/L	< 3	< 3	< 3	< 3
Strontium µg/L	1420	1690	990	758
Thallium µg/L	0.08	< 0.05	< 0.05	< 0.05
Thorium µg/L	0.51	0.38	0.52	0.18
Titanium µg/L	25.5	28.4	24.9	15.3
Uranium µg/L	0.01	< 0.005	0.02	0.006
Vanadium µg/L	6.5	7.8	13.8	14.4
Yttrium µg/L	0.13	0.16	0.31	0.27
Zinc µg/L	28.4	61.8	20.1	15.8
Zirconium µg/L	0.4	0.4	3.7	0.2
nm - not measured; ppm - parts per million; mg/L - milligrams per liter; µg/L - micrograms per liter; ng/L - nanograms per liter; mS/cm - milliSiemens per centimeter
Leach Table 1, continued
	minimum	maximum	mean*
pH	8.22	11.8	10.00
Specific Conductance mS/cm	1.31	3.41	2.03
Chloride mg/L	3	52	11.27
Fluoride mg/L	<1.6	<1.6	***
Nitrate mg/L	0.5	62	3.69
Calcium mg/L	314	888	519.83
Magnesium mg/L	0.08	20.2	2.27
Potassium mg/L	1	12.3	6.03
Silicon mg/L	2	11.3	5.43
Phosphorous mg/L	0.02	0.1	0.04
Sodium mg/L	1.54	18.3	5.16
Sulfate mg/L	674	1640	1121.72
Aluminum µg/L	6.33	702	49.68
Antimony µg/L	7.97	73.6	24.37
Arsenic µg/L	1	3.3	1.83
Barium µg/L	10.4	61.7	33.90
Beryllium µg/L	< 0.05	< 0.05	***
Bismuth µg/L	0.006	0.02	0.01
Cadmium µg/L	0.02	1.56	0.33
Cerium µg/L	0.01	0.4	0.02
Cesium µg/L	0.02	0.1	0.05
Chromium µg/L	9	408	29.50
Cobalt µg/L	0.72	3.18	1.17
Copper µg/L	3.5	39	13.21
Gallium µg/L	0.05	0.97	0.15
Germanium µg/L	0.04	0.2	0.07
Iron µg/L	<50	<50	***
Lanthanum µg/L	0.01	0.18	0.02
Lead µg/L	0.2	11.5	0.83
Lithium µg/L	0.3	29.7	7.91
Manganese µg/L	1	35.1	2.31
Mercury ng/L	7	130	21.26
Molybdenum µg/L	1.18	140	25.54
Nickel µg/L	14.4	42.6	23.46
Niobium µg/L	0.02	0.1	0.05
Rubidium µg/L	1.35	25	11.02
Scandium µg/L	0.8	5.5	1.82
Selenium µg/L	1	10.5	3.58
Silver µg/L	< 3	< 3	***
Strontium µg/L	561	1690	1083.10
Thallium µg/L	0.06	0.2	0.10
Thorium µg/L	0.04	0.8	0.16
Titanium µg/L	13.4	28.4	21.65
Uranium µg/L	0.006	0.52	0.04
Vanadium µg/L	2.7	16.1	8.24
Yttrium µg/L	0.05	0.31	0.11
Zinc µg/L	5.3	61.8	13.38
Zirconium µg/L	0.07	3.7	0.22
*Geometric mean for all parameters except pH; ***Geometric mean not calculated due to one or more samples having concentrations below detection limit; nm - not measured; ppm - parts per million; mg/L - milligrams per liter; µg/L - micrograms per liter;
ng/L - nanograms per liter; mS/cm - milliSiemens per centimeter

ins - insufficient leachate solution volume to measure pH and conductivity

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U.S. Department of the Interior | U.S. Geological Survey URL: https://pubsdata.usgs.gov/pubs/of/2001/ofr-01-0429/leach1/WTCleachtable.html Questions or Assistance: USGS Web Contact Page Last Modified: Wed Dec 7 18:28 EST 2016