Blind Blank Project

The BLIND BLANK PROJECT (BBP) is designed to provide the U.S. Geological Survey's National Water Quality Laboratory (NWQL) a tool to evaluate their methods and rapidly identify method performance problems or contamination. It also aids in the determination of a Long Term Method Detection Level (LT-MDL) for many inorganic methods. The project submits double blind blank samples (identity of the sample as well as the concentration of the individual components within the sample is unknown to the analyst) to most of the inorganic analytical lines. Data are collected and analyzed to determine trends, biases, and variability. Results are expected to be within the control limits (equal to +/- the reporting limit). To see the Blind Blank scattergrams, click on the links below.

For questions please contact Ted Struzeski

Blind Blind Project Chief (struzesk@usgs.gov)
U.S. Geological Survey
Denver Federal Center
Mail Stop 401, Box 25046
Denver, CO 80225
303.236.1872

Blind Blank Charts (WY09-WY13)
Analysis	Lab Code	Test ID	Analyte	Analysis	Lab Code	Test ID	Analyte
Nutrients	2755	62854CL062	Alkaline Persulfate-Nitrogen, FCA	Ion-selective Electrode	31	00950ISE05	Fluoride, ASF, ISE, Filtered
	2758	00666CL062	Alkaline Persulfate-Phosphorous, FCA
	3116	0060800048	Ammonia, Kone	Colorimetry	1202	71865CL033	Iodide, Colorimetry, ASF, Ceric-Arsenious
	1984	00625KJ009	Colorimetry, ASF, Microkjeldahl Digestion, P, Phosphorus as P, Unf, acidified Added 02/2013		3121	00955CL151	Silica, Water, automated discrete analysis (DA)
	1985	00623KJ002	Colorimetry, ASF, Microkjeldahl Digestion, N, Ammonia + Organic Nitrogen as N, FIL
	1986	00625KJ008	Colorimetry, ASF, Microkjeldahl Digestion, N, Ammonia + Organic Nitrogen as N, Unf, acidified Added 02/2013	Arsenic Speciation	3142	62452PLM16	Arsenite [As(III)]
	1983	00666KJ005	Colorimetry, ASF, Microkjeldahl Digestion, P, Phosphorus as P, FIL		3142	62453PLM16	Arsenate [As(V)]
	2331	00666CL020	Low Level Total Phosphorus - Filtered		3142	62454PLM16	Monomethylarsenate
	2333	00665CL021	Low Level Total Phosphorus - Unfiltered, Acidified		3142	62455PLM16	Dimethylarsenate
	2332	00666CL019	Low Level Total Phosphorus - Filtered, acidified
	2188	00610CL017	Nitrogen, NH3-Unfiltered	Physical Properties	27	70300ROE10	ROE. at 180 C (TDS)
	1991	00608CL036	Nitrogen NH3 - FCA Discontinued 02/2013		69	90095WHT03	Specific Conductance
	1990	00631CL047	NITROGEN NO2+NO3-FCA Discontinued 02/2013		70	90410TT040	Acid Neutralizing Capacity (ANC), TOT LAB-CaCO3
	3117	0061300049	Nitrite, Kone		165	00500ROE12	ROE at 105 Degrees C, Total
	2754	62854CL063	Total Nitrogen, (NO2+NO3+NH3+Organic-N), Fil, Alkaline Persulfate Digestion		169	00530SLD04	ROE at 105 Degrees C, Suspended
	2756	62855AKP01	Total Nitrogen, (NO2+NO3+NH3+Organic-N), Unf, Acidified, Alkaline Persulfate Digestion		2109	29801TT040	Alkalinity, Filtered
	2757	00666CL063	Total Phosphorus, Filtered, Alkaline Persulfate Digestion		2187	63676TS098	Turbidity, NTRU
	2759	00665AKP01	Total Phosphorus, Unfiltered, Acidified, Alkaline Persulfate Digestion
	3118	0067100048	Ortho-PO4, Kone	ICP-OES Unfiltered	2352	01007PLA15	Barium
	3156	00631RED01	Nitrate plus Nitrite as N, Fil New Method 10.17.2011		2353	01012PLA15	Beryllium
	3157	00631RED01	Nitrate plus Nitrite as N, Fil, Low-level New Method 10.17.2011		2354	01022PLA15	Boron
					2355	01027PLA15	Cadmium
ICP-OES Filtered	641	01005PLA11	Barium		2356	00916PLA15	Calcium
	655	01010PLA11	Beryllium		2357	01034PLA15	Chromium
	2110	01020PLA13	Boron		2391	01037PLA15	Cobalt
	673	01025PLA11	Cadmium		2358	01042PLA15	Copper
	659	00915PLA11	Calcium		2359	01045PLA15	Iron
	722	01030PLA11	Chromium		2361	01132PLA15	Lithium
	644	01035PLA11	Cobalt		2362	00927PLA15	Magnesium
	657	01040PLA11	Copper		2363	01055PLA15	Manganese
	645	01046PLA11	Iron		2364	01062PLA15	Molybdenum
	664	01130PLA11	Lithium		2365	01067PLA15	Nickel
	663	00925PLA11	Magnesium		2775	00937PLO01	Potassium
	648	01056PLA11	Manganese		2366	00956PLA15	Silica
	649	01060PLA11	Molybdenum		2367	01077PLA15	Silver
	721	01065PLA11	Nickel		2368	00929PLA15	Sodium
	2774	00935PLO02	Potassium LL		2369	01082PLA15	Strontium
	2773	00935PLO03	Potassium		2370	01087PLA15	Vanadium
	667	00955PLA11	Silica		2371	01092PLA15	Zinc
	723	01075PLA11	Silver
	675	00930PLA11	Sodium	ICP-MS	2372	01105PLM48	Aluminum
	652	01080PLA11	Strontium	Unfiltered	2373	01097PLM48	Antimony
	653	01085PLA11	Vanadium		3123	01002PLM11	Arsenic, Collision
	671	01090PLA11	Zinc		2374	01007PLM47	Barium
					2375	01012PLM47	Beryllium
ICP-MS	1784	01106PLM43	Aluminum		2501	01022PLM47	Boron
Filtered	1785	01095PLM43	Antimony		2376	01027PLM47	Cadmium
	3122	01000PLM10	Arsenic, Collision		3127	01034PLM11	Chromium, Collision
	1786	01005PLM43	Barium		3125	01037PLM11	Cobalt, Collision
	1787	01010PLM43	Beryllium		3129	01042PLM11	Copper, Collision
	2504	01020PLM40	Boron		2380	01051PLM48	Lead
	1788	01025PLM43	Cadmium		2381	01132PLM48	Lithium
	3126	01030PLM10	Chromium, Collision		2382	01055PLM48	Manganese
	3124	01035PLM10	Cobalt, Collision		2383	01062PLM48	Molybdenum
	3128	01040PLM10	Copper, Collision		3131	01067PLM11	Nickel, Collision
	1792	01049PLM43	Lead		3133	01147PLM11	Selenium, Collision
	2505	01130PLM40	Lithium		2386	01077PLM48	Silver
	1793	01056PLM43	Manganese		2387	01082PLM48	Strontium
	1794	01060PLM43	Molybdenum		2388	01059PLM48	Thallium
	3130	01065PLM10	Nickel, Collision		3137	01154PLM11	Tungsten, Collision
	3132	01145PLM10	Selenium, Collision		2389	28011PLM48	Uranium
	1796	01075PLM43	Silver		3135	01187PLM11	Vanadium, Collision
	2507	01080PLM40	Strontium		3139	01092PLM11	Zinc, Collision
	2508	01057PLM40	Thallium
	3136	01155PLM10	Tungsten	Carbon	0096	38260SPEC2	MBAS, Total
	1797	22703PLM43	Uranium		2606	00694COMB6	Total Particulate Carbon (TPC)
	3134	01085PLM10	Vanadium, Collision		2607	49570COMB7	Total Particulate Nitrogen (TPN)
	3138	01090PLM10	Zinc, Collision		2608	0068800127	Particulate Inorganic Carbon (PIC)
					2613	00681OX008	Dissolved Organic Carbon (DOC),
Mercury	2707	71890CV014	Hg, Fil, CVAF		3211	00680COMB9	Carbon, Organic, TOT
	2708	71900CV018	Hg, UnFil, CVAF		2613	00681OX008	Dissolved Organic Carbon (DOC),
					3211	00680COMB9	Carbon, Organic, TOT

				UV Absorb	2614	50624UV005	UV Absor Orgn 254nm
					2615	61726UV007	UV Absor Orgn 280nm

				Radon	1369	82303LSC01	Radon-222,Unfiltered

Name	Function	email	phone
George Ritz	Branch Chief	gfritz@usgs.gov	303-236-1835
Delicia Beaty	NFQA,OBSP	dbeaty@usgs.gov	303-236-1817
Brooke Connor	LEP, LTMDL	bfconnor@usgs.gov	303-236-1877
Suranne Stineman	OBSP	stineman@usgs.gov	303-236-1821
Amy Ludtke	Hydrologist	asludtke@usgs.gov	303-236-1876
RoseAnn Martin	BBP	ramartin@usgs.gov	303-236-1874
Mark Nilles	Acid Rain Project	manilles@usgs.gov	303-236-1878
Ted Struzeski	IBSP	struzesk@usgs.gov	303-236-1872
Scott Townsend	IT	satownse@usgs.gov	303-236-1871
Greg Wetherbee	PCQA	wetherbe@usgs.gov	303-236-1837
Mark Woodworth	SLQA,SRS	woodwort@usgs.gov	303-236-1875

	National Atmospheric Deposition Program National Trends Network	National Water Quality Laboratory	Office of Water Quality
	USGS Water Resources Discipline Publications	USGS Water Resources Discipline, Water Data

Blind Blank Charts (WY09-WY13)