##### QADATA Summary -- January 2004

The Inorganic Blind Sample Project (IBSP) reviews 108 inorganic
analytical lines at the National Water Quality Laboratory (NWQL) and 79
inorganic analytical lines at the Ocala Water Quality and Research
Laboratory (OWQRL) using double-blind, quality-assurance samples. The
QADATA Summary is a short summary of only those analytical lines for
which the quality-assurance charts indicate or have indicated a bias
and/or higher than expected variability. Overall, the vast majority of
the analyses at the NWQL and OWQRL demonstrate acceptable variability
and little or no bias.

The data reviewed is for the time period 06/01/03 through 01/15/04;
however, longer-range charts are shown when they add clarity to the
problem. The attached quality-assurance charts contain data from samples
that have been subject to the same laboratory handling procedures as the
samples that are submitted by the USGS district offices, and the data
have the same level of quality control review as the data released to
the districts. Thus, any factors that affect the districts' data should
also affect the data shown in the IBSP quality-assurance charts. Samples
for which the results are outside of control limits\
(+/-2 f-pseudosigma) are reanalyzed, but the values are not updated.
Data from samples that are known to have deteriorated or are known to
have been affected by a problem at IBSP are not displayed on the charts.

In this report, the "Problem" is determined and written by IBSP. The
"Problem" is then sent to the laboratories that then get two weeks to
respond to the issue by writing a "Lab Comment" and a "Corrective
Action." The labs' comments are incorporated into the QADATA Summary as
received. Comments from previous QADATA Summaries are included in this
report when they help provide a clearer perspective of the overall
concern.

Current charts (updated twice weekly) may be accessed at
<http://bqs.usgs.gov/bsp/FY03_04charts.htm>. Laboratory and district
personnel can also make their own QADATA retrieval to parallel their
project's sampling period by using the QADATA Application online at
[http://bqs.usgs.gov/bsp](http://bqs.usgs.gov/bsp/mainpage.html) (select
QADATA Application button). Charts pertaining specifically to this
report can be accessed electronically by following the underlined
hyperlinks embedded within the report and associated with each analysis
discussed.

*Tedmund M. Struzeski*

<struzesk@usgs.gov>

Table of Contents

Note: All analytes are hyperlinked to their respective positions within
the report.

NWQL

Analyte Page

Aluminum, Whole-Water Recoverable, ICP-MS, Labcode 2372, Parmcode 1105E
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 3

Arsenic, Filtered, GFAA, Labcode 2160, Parmcode 1000C . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 3

Beryllium, Whole-Water Recoverable, ICP, Labcode 2353, Parmcode 1012C .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 4

Cadmium, Filtered , ICP-MS, Labcode 1788, Parmcode 1025G . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . 4

Cadmium, Filtered , GFAA, Labcode 1554, Parmcode 1025F . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 4

Cadmium, Whole-Water Recoverable, GFAA, Labcode 1555, Parmcode 1027F . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 5

Chromium, Whole-Water Recoverable, GFAA, Labcode 1937, Parmcode 1034E .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 6

Copper, Filtered , GFAA, Labcode 1558, Parmcode 1040F . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 6

Iron, Whole Water Recoverable, ICP, Labcode 2359, Parmcode 1045C . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . 7

Manganese, Filtered, ICP, Labcode 0648, Parmcode 1056C . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 7

Magnesium, Filtered, ICP, Labcode 0663, Parmcode 0925C . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 8

Sodium, Filtered, ICP, Labcode 0675, Parmcode 0930C . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . 8

Potassium, Filtered, ICP, Labcode 2773, Parmcode 0935C . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . 8

**OWQRL**

Analyte

**Ammonia, Filtered,** Colorimetric, Labcode 1980, Parmcode 0608H . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 9

**Phosphorus, Filtered,** Colorimetric, Labcode 1983, Parmcode 0666D . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 9

**Phosphorus, Whole-Water Recoverable,** Colorimetric, Labcode 1984,
Parmcode 0665D . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 10

**Antimony, Whole-Water Recoverable,** GFAA, Labcode 3122, Parmcode
1097(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 11

**Arsenic, Whole-Water Recoverable,** GFAA, Labcode 3119, Parmcode
1002(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . 11

**Cadmium, Filtered,** GFAA, Labcode 1554, Parmcode 1025F . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 12

**Chromium, Filtered,** GFAA, Labcode 1936, Parmcode 1030(1) . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 13

**Selenium, Whole-Water Recoverable,** GFAA, Labcode 3124, Parmcode
1147(0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . 13

**Alkalinity, Whole-Water Recoverable,** Titrimetric, Labcode 0070,
Parmcode 90410A . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . 14

Alkalinity, Filtered, Titrimetric, Labcode 3160, Parmcode 29801(0) . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 14

Table 1

NWQL PERFORMANCE ON IBSP SAMPLES

######### **Note: Click the blue, underlined text in the left column to access the control chart for the associated parameter.**

+---------+---+------------------+-------------------+-------------------+
| **Trace | * |                  | **NWQL**          | **Corrective**    |
| Metal   | * |                  |                   |                   |
| De      | P |                  | **Lab Comment**   | **Action**        |
| termina | r |                  |                   |                   |
| tions** | o |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**Al   |   | Data indicate a  | **The in-bottle   | **As soon as the  |
| uminum, |   | large positive   | digestion process | source of         |
| Whol    |   | bias for part of | (INBD) was        | contamination was |
| e-Water |   | November 2003.   | experiencing an   | determined, the   |
| Rec     |   | Although all     | aluminum          | dispenser was     |
| overabl |   | biased data are  | contamination     | replaced with an  |
| e**](ht |   | from the same    | during this time  | appropriate       |
| tp://bq |   | reference        | period. The       | dispenser and the |
| s.usgs. |   | material, other  | HCl-acid          | acid bottle was   |
| gov/bsp |   | methods for      | dispenser broke   | disposed of. The  |
| /QADATA |   | filtered         | and was replaced  | contamination for |
| _all/JA |   | aluminum (NWQL   | with a temporary  | all five elements |
| N04NWQL |   | and OWQRL)       | dispenser while   | has been          |
| 01105E. |   | indicate no      | another one was   | eliminated. The   |
| gif)**\ |   | apparent         | ordered. The      | INBD process is   |
| ICP-MS  |   | problems with    | dispenser was     | monitored closely |
| labcode |   | this reference   | rinsed several    | for contamination |
| 2372    |   | material.        | times and there   | by the use of     |
| p       |   |                  | was no evidence   | INBD prep blanks. |
| armcode |   |                  | of contamination. | Whole-Water       |
| 1105E** |   |                  | Over a short time | Recoverable       |
|         |   |                  | period, however,  | Samples from      |
|         |   |                  | the dispenser     | these three sets  |
|         |   |                  | started "freezing | that were         |
|         |   |                  | up" and was       | affected by       |
|         |   |                  | difficult to use. | contamination     |
|         |   |                  | It was determined | from any of the   |
|         |   |                  | later that it was | five elements     |
|         |   |                  | not adequate for  | were given an "E" |
|         |   |                  | use with acids    | when a value was  |
|         |   |                  | and the           | detected at less  |
|         |   |                  | contamination was | than 10X the      |
|         |   |                  | due to this       | contamination in  |
|         |   |                  | dispenser. Three  | the blank.**      |
|         |   |                  | INBD sets were    |                   |
|         |   |                  | affected by this  |                   |
|         |   |                  | contamination. In |                   |
|         |   |                  | addition, small   |                   |
|         |   |                  | concentrations    |                   |
|         |   |                  | (above the LRL)   |                   |
|         |   |                  | of Boron, Copper, |                   |
|         |   |                  | Strontium and     |                   |
|         |   |                  | Lead showed up in |                   |
|         |   |                  | the set blanks,   |                   |
|         |   |                  | however, Aluminum |                   |
|         |   |                  | showed the        |                   |
|         |   |                  | largest           |                   |
|         |   |                  | contamination.    |                   |
|         |   |                  | The large         |                   |
|         |   |                  | Aluminum positive |                   |
|         |   |                  | bias for part of  |                   |
|         |   |                  | November 2003 was |                   |
|         |   |                  | due to this       |                   |
|         |   |                  | contamination.**  |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**A    | * |                  | **New standards   | **New calibration |
| rsenic, | * |                  | were made in      | standards will be |
| Filt    | D |                  | November of 2003  | remade and        |
| ered**] | a |                  | including         | verified as of    |
| (http:/ | t |                  | Continuing        | February 6^th^,   |
| /bqs.us | a |                  | Calibration       | 2004. The element |
| gs.gov/ | s |                  | Verifications     | will continue to  |
| bsp/QAD | i |                  | (CCV) and         | be monitored      |
| ATA_all | n |                  | Third-Party Check | closely for a     |
| /JAN04N | c |                  | standards (TPC).  | bias.**           |
| WQL0100 | e |                  | Both the CCV's    |                   |
| 0C.gif) | O |                  | and TPC's for     |                   |
| *       | c |                  | arsenic are       |                   |
| *GFAA** | t |                  | showing a         |                   |
|         | o |                  | positive bias on  |                   |
| **      | b |                  | QC charts.**      |                   |
| labcode | e |                  |                   |                   |
| 2160**  | r |                  |                   |                   |
|         | 2 |                  |                   |                   |
| **p     | 0 |                  |                   |                   |
| armcode | 0 |                  |                   |                   |
| 1000C** | 3 |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
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|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Ber  | * |                  | **New standards   | **New calibration |
| yllium, | * |                  | were made in      | standard will be  |
| Whol    | N |                  | November 2003.    | remade and        |
| e-Water | e |                  | Since then, QC    | verified by       |
| Recover | w |                  | charts for CCV's  | February 2^nd^,   |
| able**] | I |                  | and TPC's show a  | 2004. The element |
| (http:/ | C |                  | slight positive   | will continue to  |
| /bqs.us | P |                  | bias. The six BQS | be monitored      |
| gs.gov/ | i |                  | samples were      | closely for a     |
| bsp/QAD | n |                  | rerun and showed  | bias.**           |
| ATA_all | s |                  | a slight positive |                   |
| /JAN04N | t |                  | bias. Before the  |                   |
| WQL0101 | r |                  | standards were    |                   |
| 2C.gif) | u |                  | made in November, |                   |
| **ICP   | m |                  | Beryllium was     |                   |
| labcode | e |                  | showing a         |                   |
| 2353    | n |                  | slightly high     |                   |
| p       | t |                  | bias and the      |                   |
| armcode | a |                  | standards were    |                   |
| 1012C** | t |                  | nearing their     |                   |
|         | i |                  | expiration date,  |                   |
|         | o |                  | thus,             |                   |
|         | n |                  | necessitating the |                   |
|         | c |                  | need for new      |                   |
|         | a |                  | calibration       |                   |
|         | m |                  | standards.**      |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**C    | * |                  | **The bias is not | **New calibration |
| admium, | * |                  | evident on NWQL   | standards were    |
| Filt    | D |                  | QC charts.**      | made and verified |
| ered**] | a |                  |                   | for use at the    |
| (http:/ | t |                  |                   | end of December   |
| /bqs.us | a |                  |                   | 2003. We will     |
| gs.gov/ | f |                  |                   | continue to       |
| bsp/QAD | o |                  |                   | monitor internal  |
| ATA_all | r |                  |                   | QC and IBSP       |
| /JAN04N | t |                  |                   | charts for bias   |
| WQL0102 | h |                  |                   | and variability.  |
| 5G.gif) | e |                  |                   | If the TPC        |
| *       | l |                  |                   | standards         |
| *ICP-MS | a |                  |                   | indicate a bias,  |
| labcode | s |                  |                   | calibration       |
| 1788    | t |                  |                   | standards will be |
| p       | s |                  |                   | remade and        |
| armcode | i |                  |                   | verified.**       |
| 1025G** | x |                  |                   |                   |
|         | m |                  |                   |                   |
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|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
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|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**C    | * |                  | **The laboratory  |                   |
| admium, | * |                  | has and will      |                   |
| Filt    | A |                  | continue to       |                   |
| ered**] | p |                  | closely monitor   |                   |
| (http:/ | o |                  | this analysis.**  |                   |
| /bqs.us | s |                  |                   |                   |
| gs.gov/ | i |                  |                   |                   |
| bsp/QAD | t |                  |                   |                   |
| ATA_all | i |                  |                   |                   |
| /JAN04N | v |                  |                   |                   |
| WQL0102 | e |                  |                   |                   |
| 5F.gif) | b |                  |                   |                   |
| **GFAA  | i |                  |                   |                   |
| labcode | a |                  |                   |                   |
| 1554    | s |                  |                   |                   |
| p       | i |                  |                   |                   |
| armcode | s |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| admium, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| GFAA,   |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1554,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1025F*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         | A |                  | The bias is not   | New calibration   |
|         | p |                  | evident on NWQL   | standards were    |
|         | o |                  | QC charts.        | made and verified |
|         | s |                  |                   | for use at the    |
|         | i |                  |                   | end of July.      |
|         | t |                  |                   | NIST-traceable    |
|         | i |                  |                   | third party check |
|         | v |                  |                   | standards (TPC)   |
|         | e |                  |                   | were implemented  |
|         | b |                  |                   | in September.     |
|         | i |                  |                   | There is not      |
|         | a |                  |                   | enough data       |
|         | s |                  |                   | collected from    |
|         | i |                  |                   | the TPC standards |
|         | s |                  |                   | for evaluation.   |
|         | d |                  |                   | We will continue  |
|         | e |                  |                   | to monitor        |
|         | m |                  |                   | internal QC and   |
|         | o |                  |                   | IBSP charts for   |
|         | n |                  |                   | bias and          |
|         | s |                  |                   | variability. If   |
|         | t |                  |                   | the TPC standards |
|         | r |                  |                   | indicate a bias,  |
|         | a |                  |                   | calibration       |
|         | t |                  |                   | standards will be |
|         | e |                  |                   | remade and        |
|         | d |                  |                   | verified.         |
|         | ( |                  |                   |                   |
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|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**C    | * |                  | **For one of the  | To help alleviate |
| admium, | * |                  | samples, a blank  | human error when  |
| Whol    | A |                  | was accidentally  | putting data into |
| e-Water | s |                  | sent to the LIMS  | the LIMS, the     |
| Recover | o |                  | instead of a      | GFAA section has  |
| able**] | f |                  | sample and a zero | implemented the   |
| (http:/ | J |                  | went in the       | use of an         |
| /bqs.us | u |                  | database. There   | additional QC     |
| gs.gov/ | l |                  | is no obvious     | check sheet that  |
| bsp/QAD | y |                  | explanation as to | is included in    |
| ATA_all | 2 |                  | why the other two | all data packets. |
| /JAN04N | 0 |                  | points are        | This sheet lists  |
| WQL0102 | 0 |                  | outside\          | all samples that  |
| 7F.gif) | 3 |                  | +/- 6             | have to be rerun  |
| **GFAA  | t |                  | f-pseudosigma.    | due to QC         |
| labcode | h |                  | The QC            | failures,         |
| 1555    | e |                  | surrounding these | dilutions,        |
| p       | p |                  | samples was in    | possible          |
| armcode | o |                  | control and the   | mispours, and     |
| 1027F** | s |                  | instrument was    | bottles that      |
|         | i |                  | running within    | cannot be found.  |
|         | t |                  | specifications.** | The analyst       |
|         | i |                  |                   | initials each     |
|         | v |                  |                   | sample when the   |
|         | e |                  |                   | action is         |
|         | b |                  |                   | performed in      |
|         | i |                  |                   | LIMS. This should |
|         | a |                  |                   | help alleviate    |
|         | s |                  |                   | the problem of    |
|         | h |                  |                   | incorrect data    |
|         | a |                  |                   | going into LIMS.  |
|         | s |                  |                   | In addition, the  |
|         | i |                  |                   | section will      |
|         | m |                  |                   | closely monitor   |
|         | p |                  |                   | internal QC and   |
|         | r |                  |                   | IBSP charts for   |
|         | o |                  |                   | bias and          |
|         | v |                  |                   | variability.      |
|         | e |                  |                   |                   |
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|         | ( |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 7 |                  |                   |                   |
|         | % |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | o |                  |                   |                   |
|         | u |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | + |                  |                   |                   |
|         | / |                  |                   |                   |
|         | - |                  |                   |                   |
|         | 6 |                  |                   |                   |
|         | f |                  |                   |                   |
|         | - |                  |                   |                   |
|         | p |                  |                   |                   |
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|         | u |                  |                   |                   |
|         | d |                  |                   |                   |
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|         | s |                  |                   |                   |
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|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| admium, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| GFAA,   |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1555,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1027F*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | The bias is not   | New calibration   |
|         | p |                  | evident on NWQL   | standards were    |
| >       | o |                  | QC charts.        | made and verified |
|  QADATA | s |                  |                   | for use at the    |
| >       | i |                  |                   | end of July.      |
| Summary | t |                  |                   | NIST-traceable    |
| > N     | i |                  |                   | third party check |
| ovember | v |                  |                   | standards (TPC)   |
| > 2003  | e |                  |                   | were implemented  |
|         | b |                  |                   | in September.     |
|         | i |                  |                   | There is not      |
|         | a |                  |                   | enough data       |
|         | s |                  |                   | collected from    |
|         | i |                  |                   | the TPC standards |
|         | s |                  |                   | for evaluation.   |
|         | s |                  |                   | We will continue  |
|         | t |                  |                   | to monitor        |
|         | i |                  |                   | internal QC and   |
|         | l |                  |                   | IBSP charts for   |
|         | l |                  |                   | bias and          |
|         | e |                  |                   | variability. If   |
|         | v |                  |                   | the TPC standards |
|         | i |                  |                   | indicate a bias,  |
|         | d |                  |                   | calibration       |
|         | e |                  |                   | standards will be |
|         | n |                  |                   | remade and        |
|         | t |                  |                   | verified.         |
|         | ; |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
| From    | T |                  | Began using new   | Improvement is    |
|         | h |                  | standards July 9, | noted since       |
| >       | e |                  | 2003. Online QC   | standards were    |
|  QADATA | r |                  | charts prior to   | made. NWQL will   |
| >       | e |                  | July 9 show some  | continue to       |
| Summary | s |                  | bias, but bias    | monitor data      |
| > Se    | u |                  | has decreased     | quality.          |
| ptember | l |                  | since new         |                   |
| > 2003  | t |                  | standards were    |                   |
|         | s |                  | made.             |                   |
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+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | NWQL QC charts    | Instrument has    |
|         | s |                  | show variable but | recently been     |
| >       | o |                  | acceptable data.  | optimized, and    |
|  QADATA | f |                  |                   | the NWQL will     |
| >       | J |                  |                   | continue to       |
| Summary | a |                  |                   | monitor.          |
| > July  | n |                  |                   |                   |
| > 2003  | u |                  |                   |                   |
|         | a |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Ch   | * |                  |                   |                   |
| romium, | * |                  |                   |                   |
| Whol    | T |                  |                   |                   |
| e-Water | h |                  |                   |                   |
| Recover | e |                  |                   |                   |
| able**] | b |                  |                   |                   |
| (http:/ | i |                  |                   |                   |
| /bqs.us | a |                  |                   |                   |
| gs.gov/ | s |                  |                   |                   |
| bsp/QAD | s |                  |                   |                   |
| ATA_all | h |                  |                   |                   |
| /JAN04N | o |                  |                   |                   |
| WQL0103 | w |                  |                   |                   |
| 4E.gif) | n |                  |                   |                   |
| **GFAA  | p |                  |                   |                   |
| labcode | r |                  |                   |                   |
| 1937    | e |                  |                   |                   |
| p       | v |                  |                   |                   |
| armcode | i |                  |                   |                   |
| 1034E** | o |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
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|         | y |                  |                   |                   |
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|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| ch      |   |                  |                   |                   |
| romium, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| GFAA,   |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1937,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1034E*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | NWQL also         | New whole water   |
|         | n |                  | identifies a      | recoverable       |
| >       | e |                  | chromium whole    | calibration       |
|  QADATA | g |                  | water negative    | standards were    |
| >       | a |                  | bias. New         | made and verified |
| Summary | t |                  | intermediate      | October 20th.     |
| > N     | i |                  | stocks were       | NIST-traceable    |
| ovember | v |                  | prepared in July. | third party check |
| > 2003  | e |                  | Dissolved and     | standards (TPC)   |
|         | b |                  | whole water       | were implemented  |
|         | i |                  | calibration       | in September. As  |
|         | a |                  | standards were    | of yet, we do not |
|         | s |                  | made from the     | have enough data  |
|         | ( |                  | fresh stocks in   | to evaluate bias  |
|         | 1 |                  | July. The QC      | and variability   |
|         | 5 |                  | charts for        | with the TPC. We  |
|         | . |                  | dissolved         | continue to       |
|         | 0 |                  | chromium do not   | monitor internal  |
|         | % |                  | show a bias.      | QC and IBSP       |
|         | ) |                  |                   | charts for bias   |
|         | h |                  |                   | and variability   |
|         | a |                  |                   | after these       |
|         | s |                  |                   | changes.          |
|         | d |                  |                   |                   |
|         | e |                  |                   |                   |
|         | v |                  |                   |                   |
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|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**     | * |                  |                   |                   |
| Copper, | * |                  |                   |                   |
| Filt    | F |                  |                   |                   |
| ered**] | r |                  |                   |                   |
| (http:/ | o |                  |                   |                   |
| /bqs.us | m |                  |                   |                   |
| gs.gov/ | J |                  |                   |                   |
| bsp/QAD | u |                  |                   |                   |
| ATA_all | n |                  |                   |                   |
| /JAN04N | e |                  |                   |                   |
| WQL0104 | 2 |                  |                   |                   |
| 0F.gif) | 0 |                  |                   |                   |
| **GFAA  | 0 |                  |                   |                   |
| labcode | 3 |                  |                   |                   |
| 1558    | t |                  |                   |                   |
| p       | h |                  |                   |                   |
| armcode | r |                  |                   |                   |
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|         | . |                  |                   |                   |
|         | D |                  |                   |                   |
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|         | i |                  |                   |                   |
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|         | e |                  |                   |                   |
|         | N |                  |                   |                   |
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|         |   |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | N |                  |                   |                   |
|         | o |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | r |                  |                   |                   |
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|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | c |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | n |                  |                   |                   |
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|         | y |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [       | * |                  |                   |                   |
| **Iron, | * |                  |                   |                   |
| Whole   | T |                  |                   |                   |
| Water   | h |                  |                   |                   |
| Recover | e |                  |                   |                   |
| able**] | h |                  |                   |                   |
| (http:/ | i |                  |                   |                   |
| /bqs.us | g |                  |                   |                   |
| gs.gov/ | h |                  |                   |                   |
| bsp/QAD | v |                  |                   |                   |
| ATA_all | a |                  |                   |                   |
| /JAN04N | r |                  |                   |                   |
| WQL0104 | i |                  |                   |                   |
| 5C.gif) | a |                  |                   |                   |
| **ICP   | b |                  |                   |                   |
| labcode | i |                  |                   |                   |
| 2359    | l |                  |                   |                   |
| p       | i |                  |                   |                   |
| armcode | t |                  |                   |                   |
| 1045C** | y |                  |                   |                   |
|         | p |                  |                   |                   |
|         | r |                  |                   |                   |
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|         | v |                  |                   |                   |
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|         | r |                  |                   |                   |
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|         | 3 |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | N |                  |                   |                   |
|         | o |                  |                   |                   |
|         | c |                  |                   |                   |
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|         | c |                  |                   |                   |
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|         | i |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| iron,   |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| ICP,    |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 2359,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1045C*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | S |                  | One of the three  | The ICP-OES       |
|         | i |                  | results outside   | instrumentation   |
| >       | n |                  | of 6              | has the ability   |
|  QADATA | c |                  | f-pseudosigma     | to monitor        |
| >       | e |                  | from the MPV was  | elemental         |
| Summary | A |                  | due to a sample   | concentration     |
| > N     | u |                  | login mix-up. The | during the rinse. |
| ovember | g |                  | sample has been   | To prevent        |
| > 2003  | u |                  | relogged and is   | carryover in the  |
|         | s |                  | pending analysis. | future, the       |
|         | t |                  | The other two     | software will be  |
|         | 2 |                  | outliers were due | set to monitor Fe |
|         | 0 |                  | to carryover      | concentrations    |
|         | 0 |                  | where the         | greater than 250  |
|         | 3 |                  | previous samples  | ug/L and increase |
|         | , |                  | had Fe            | the rinse time if |
|         | t |                  | concentrations    | necessary. In     |
|         | h |                  | greater than      | addition to       |
|         | e |                  | 20,000 ug/L.      | in                |
|         | d |                  |                   | strument/software |
|         | a |                  |                   | corrections,      |
|         | t |                  |                   | analyst and       |
|         | a |                  |                   | reviewers will be |
|         | i |                  |                   | instructed to     |
|         | n |                  |                   | watch for         |
|         | d |                  |                   | carryover when    |
|         | i |                  |                   | performing the    |
|         | c |                  |                   | secondary data    |
|         | a |                  |                   | review. The data  |
|         | t |                  |                   | packets will also |
|         | e |                  |                   | be rechecked to   |
|         | h |                  |                   | look for any      |
|         | i |                  |                   | other samples the |
|         | g |                  |                   | may have been     |
|         | h |                  |                   | affected by       |
|         | v |                  |                   | carryover and if  |
|         | a |                  |                   | necessary samples |
|         | r |                  |                   | will be rerun and |
|         | i |                  |                   | updated.          |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
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|         | l |                  |                   |                   |
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|         | o |                  |                   |                   |
|         | f |                  |                   |                   |
|         | 1 |                  |                   |                   |
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|         | l |                  |                   |                   |
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|         | s |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | % |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
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|         | f |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Man  | * |                  |                   |                   |
| ganese, | * |                  |                   |                   |
| Filt    | F |                  |                   |                   |
| ered**] | r |                  |                   |                   |
| (http:/ | o |                  |                   |                   |
| /bqs.us | m |                  |                   |                   |
| gs.gov/ | m |                  |                   |                   |
| bsp/QAD | i |                  |                   |                   |
| ATA_all | d |                  |                   |                   |
| /JAN04N | - |                  |                   |                   |
| WQL0105 | S |                  |                   |                   |
| 6C.gif) | e |                  |                   |                   |
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| labcode | e |                  |                   |                   |
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| p       | b |                  |                   |                   |
| armcode | e |                  |                   |                   |
| 1056C** | r |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Major | * |                  | **NWQL**          | **Corrective**    |
| De      | * |                  |                   |                   |
| termina | P |                  | **Lab Comment**   | **Action**        |
| tions** | r |                  |                   |                   |
|         | o |                  |                   |                   |
|         | b |                  |                   |                   |
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|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**Mag  | * |                  |                   |                   |
| nesium, | * |                  |                   |                   |
| Filt    | F |                  |                   |                   |
| ered**] | r |                  |                   |                   |
| (http:/ | o |                  |                   |                   |
| /bqs.us | m |                  |                   |                   |
| gs.gov/ | m |                  |                   |                   |
| bsp/QAD | i |                  |                   |                   |
| ATA_all | d |                  |                   |                   |
| /JAN04N | - |                  |                   |                   |
| WQL0092 | S |                  |                   |                   |
| 5C.gif) | e |                  |                   |                   |
| **ICP   | p |                  |                   |                   |
| labcode | t |                  |                   |                   |
| 0663    | e |                  |                   |                   |
| p       | m |                  |                   |                   |
| armcode | b |                  |                   |                   |
| 0       | e |                  |                   |                   |
| 0925C** | r |                  |                   |                   |
|         | t |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**     | * |                  | **The laboratory  |                   |
| Sodium, | * |                  | has and will      |                   |
| Filt    | T |                  | continue to       |                   |
| ered**] | h |                  | closely monitor   |                   |
| (http:/ | e |                  | this analysis.**  |                   |
| /bqs.us | d |                  |                   |                   |
| gs.gov/ | a |                  |                   |                   |
| bsp/QAD | t |                  |                   |                   |
| ATA_all | a |                  |                   |                   |
| /JAN04N | d |                  |                   |                   |
| WQL0093 | i |                  |                   |                   |
| 0C.gif) | s |                  |                   |                   |
| **ICP   | p |                  |                   |                   |
| labcode | l |                  |                   |                   |
| 0675    | a |                  |                   |                   |
| p       | y |                  |                   |                   |
| armcode | a |                  |                   |                   |
| 0       | n |                  |                   |                   |
| 0930C** | o |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Pot  | * |                  | **The laboratory  |                   |
| assium, | * |                  | has and will      |                   |
| Filt    | T |                  | continue to       |                   |
| ered**] | h |                  | closely monitor   |                   |
| (http:/ | e |                  | this analysis.**  |                   |
| /bqs.us | d |                  |                   |                   |
| gs.gov/ | a |                  |                   |                   |
| bsp/QAD | t |                  |                   |                   |
| ATA_all | a |                  |                   |                   |
| /JAN04N | d |                  |                   |                   |
| WQL0093 | i |                  |                   |                   |
| 5C.gif) | s |                  |                   |                   |
| **ICP   | p |                  |                   |                   |
| labcode | l |                  |                   |                   |
| 2773    | a |                  |                   |                   |
| p       | y |                  |                   |                   |
| armcode | a |                  |                   |                   |
| 0       | n |                  |                   |                   |
| 0935C** | o |                  |                   |                   |
|         | v |                  |                   |                   |
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|         | - |                  |                   |                   |
|         | D |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | b |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | . |                  |                   |                   |
|         | A |                  |                   |                   |
|         | l |                  |                   |                   |
|         | l |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | u |                  |                   |                   |
|         | l |                  |                   |                   |
|         | t |                  |                   |                   |
|         | s |                  |                   |                   |
|         | d |                  |                   |                   |
|         | u |                  |                   |                   |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | m |                  |                   |                   |
|         | e |                  |                   |                   |
|         | p |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | o |                  |                   |                   |
|         | d |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | v |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | u |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | g |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | i |                  |                   |                   |
|         | r |                  |                   |                   |
|         | m |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | v |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | u |                  |                   |                   |
|         | e |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         |   |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | D |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | i |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | i |                  |                   |                   |
|         | d |                  |                   |                   |
|         | - |                  |                   |                   |
|         | D |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | b |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | w |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         |   |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | A |                  |                   |                   |
|         | n |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | u |                  |                   |                   |
|         | l |                  |                   |                   |
|         | d |                  |                   |                   |
|         | b |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | l |                  |                   |                   |
|         | o |                  |                   |                   |
|         | s |                  |                   |                   |
|         | e |                  |                   |                   |
|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
|         | m |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | u |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | x |                  |                   |                   |
|         | t |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | A |                  |                   |                   |
|         | D |                  |                   |                   |
|         | A |                  |                   |                   |
|         | T |                  |                   |                   |
|         | A |                  |                   |                   |
|         | S |                  |                   |                   |
|         | u |                  |                   |                   |
|         | m |                  |                   |                   |
|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | y |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | d |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | b |                  |                   |                   |
|         | u |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

###### Table 2

OWQRL PERFORMANCE ON IBSP SAMPLES

######### **Note: Click the blue, underlined text in the left column to access the control chart for the associated parameter.**

+---------+---+------------------+-------------------+-------------------+
| **N     |   | **Problem**      | **OWQRL**         | **Corrective**    |
| utrient |   |                  |                   |                   |
| De      |   |                  | **Lab Comment**   | **Action**        |
| termina |   |                  |                   |                   |
| tions** |   |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**A    |   | **Data are       | **Our internal    | **New reagents    |
| mmonia, |   | biased negative  | control charts    | were made. New    |
| F       |   | starting         | for this          | data shows that   |
| iltered |   | November 2003.   | parameter also    | the bias no       |
| **](htt |   | Although all     | showed a problem  | longer evident.   |
| p://bqs |   | biased data are  | with this SRS     | This line will be |
| .usgs.g |   | from the same    | during the same   | monitored to be   |
| ov/bsp/ |   | reference        | time period as    | sure that the     |
| QADATA_ |   | material (N79),  | the blind         | bias has been     |
| all/JAN |   | this material is | samples.**        | corrected.**      |
| 04OWQRL |   | not showing a    |                   |                   |
| 00608H. |   | bias for other   |                   |                   |
| gif)**\ |   | ammonia methods  |                   |                   |
| Color   |   | at the OWQRL or  |                   |                   |
| imetric |   | the NWQL.**      |                   |                   |
| Low-    |   |                  |                   |                   |
| level** |   | **Analysis       |                   |                   |
|         |   | should be        |                   |                   |
| labcode |   | closely          |                   |                   |
| 1980    |   | monitored until  |                   |                   |
| p       |   | the next QADATA  |                   |                   |
| armcode |   | Summary is       |                   |                   |
| 0608H   |   | distributed.**   |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Phos |   | **The negative   |                   |                   |
| phorus, |   | bias has         |                   |                   |
| F       |   | improved. Since  |                   |                   |
| iltered |   | October 2003,    |                   |                   |
| **](htt |   | the overall      |                   |                   |
| p://bqs |   | negative bias is |                   |                   |
| .usgs.g |   | \<2%. There is   |                   |                   |
| ov/bsp/ |   | no bias          |                   |                   |
| QADATA_ |   | indicated after  |                   |                   |
| all/JAN |   | December 2003.** |                   |                   |
| 04OWQRL |   |                  |                   |                   |
| 00666D. |   | **No corrective  |                   |                   |
| gif)**\ |   | action           |                   |                   |
| Colorim |   | necessary.**     |                   |                   |
| etric** |   |                  |                   |                   |
|         |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1983    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0666D   |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| phos    |   |                  |                   |                   |
| phorus, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1983,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0666D*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | F |                  | The bias for this | New stock         |
|         | r |                  | parameter and the | solutions were    |
| >       | o |                  | total phosphorus, | made on           |
|  QADATA | m |                  | which is run at   | 10/2/2003. All    |
| >       | M |                  | the same time,    | tubing has been   |
| Summary | a |                  | seems to be worse | changed and all   |
| > N     | y |                  | for low level     | annual            |
| ovember | t |                  | samples than for  | maintenance was   |
| > 2003  | h |                  | high level. The   | performed ahead   |
|         | r |                  | average bias for  | of schedule.      |
|         | o |                  | all blind samples | Preliminary       |
|         | u |                  | above 0.1 mg/L is | results have      |
|         | g |                  | -3.1% for total   | shown that this   |
|         | h |                  | and dissolved     | might have helped |
|         | O |                  | phosphorus. The   | eliminate the     |
|         | c |                  | bias in the lower | bias. We will     |
|         | t |                  | part of the       | also be checking  |
|         | o |                  | calibration is    | calibration       |
|         | b |                  | also evident in   | procedures.       |
|         | e |                  | our internal      |                   |
|         | r |                  | control charts.   |                   |
|         | 2 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | , |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | g |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | d |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | r |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | 9 |                  |                   |                   |
|         | . |                  |                   |                   |
|         | 8 |                  |                   |                   |
|         | % |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | . |                  |                   |                   |
|         | T |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | m |                  |                   |                   |
|         | e |                  |                   |                   |
|         | p |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | n |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | w |                  |                   |                   |
|         | n |                  |                   |                   |
|         | f |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | p |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | s |                  |                   |                   |
|         | p |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
|         | , |                  |                   |                   |
|         | w |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | - |                  |                   |                   |
|         | w |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | . |                  |                   |                   |
|         |   |                  |                   |                   |
|         | T |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | N |                  |                   |                   |
|         | W |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | L |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | t |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | w |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | Most of the data  | The cause of the  |
|         | l |                  | points exhibiting | bias is currently |
| >       | l |                  | the negative bias | being             |
|  QADATA | d |                  | are a             | investigated.     |
| >       | a |                  | commercially      | This line is      |
| Summary | t |                  | obtained sample   | being monitored   |
| > Se    | a |                  | that has also     | closely.          |
| ptember | r |                  | exhibited a       |                   |
| > 2003  | e |                  | negative bias     |                   |
|         | c |                  | when run at the   |                   |
|         | e |                  | NWQL. Other blind |                   |
|         | i |                  | samples are also  |                   |
|         | v |                  | showing a         |                   |
|         | e |                  | negative bias,    |                   |
|         | d |                  | though not as     |                   |
|         | s |                  | much as the       |                   |
|         | i |                  | commercial one.   |                   |
|         | n |                  | Whole-water       |                   |
|         | c |                  | recoverable       |                   |
|         | e |                  | phosphorus, which |                   |
|         | M |                  | is analyzed on    |                   |
|         | a |                  | the same          |                   |
|         | y |                  | instrument at the |                   |
|         | 1 |                  | same time, is not |                   |
|         | , |                  | showing this same |                   |
|         | 2 |                  | bias. The same    |                   |
|         | 0 |                  | commercially      |                   |
|         | 0 |                  | obtained sample   |                   |
|         | 3 |                  | is not submitted  |                   |
|         | , |                  | for Total         |                   |
|         | i |                  | Phosphorus.       |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | i |                  |                   |                   |
|         | c |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | g |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
|         |   |                  |                   |                   |
|         | T |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | N |                  |                   |                   |
|         | W |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | L |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | t |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | w |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Phos |   | **The negative   |                   |                   |
| phorus, |   | bias has         |                   |                   |
| Whol    |   | improved. Since  |                   |                   |
| e-Water |   | October 2003,    |                   |                   |
| Reco    |   | the overall      |                   |                   |
| verable |   | negative bias is |                   |                   |
| **](htt |   | \<4%. There is   |                   |                   |
| p://bqs |   | no bias          |                   |                   |
| .usgs.g |   | indicated after  |                   |                   |
| ov/bsp/ |   | December 2003.** |                   |                   |
| QADATA_ |   |                  |                   |                   |
| all/JAN |   | **No corrective  |                   |                   |
| 04OWQRL |   | action           |                   |                   |
| 00665D. |   | necessary.**     |                   |                   |
| gif)**\ |   |                  |                   |                   |
| Colorim |   |                  |                   |                   |
| etric** |   |                  |                   |                   |
|         |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1984    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0665D   |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| phos    |   |                  |                   |                   |
| phorus, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1984,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0665D*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | F |                  | The bias for this | New stock         |
|         | r |                  | parameter and the | solutions were    |
| >       | o |                  | total phosphorus, | made on           |
|  QADATA | m |                  | which is run at   | 10/2/2003. All    |
| >       | J |                  | the same time,    | tubing has been   |
| Summary | u |                  | seems to be worse | changed and all   |
| > N     | n |                  | for low level     | annual            |
| ovember | e |                  | samples than for  | maintenance was   |
| > 2003  | t |                  | high level. The   | performed ahead   |
|         | h |                  | average bias for  | of schedule.      |
|         | r |                  | all blind samples | Preliminary       |
|         | o |                  | above 0.1 mg/L is | results have      |
|         | u |                  | -3.1% for total   | shown that this   |
|         | g |                  | and dissolved     | might have helped |
|         | h |                  | phosphorus. The   | eliminate the     |
|         | O |                  | bias in the lower | bias. We will     |
|         | c |                  | part of the       | also be checking  |
|         | t |                  | calibration is    | calibration       |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Trace |   | **Problem**      | **OWQRL**         | **Corrective**    |
| Metal   |   |                  |                   |                   |
| De      |   |                  | **Lab Comment**   | **Action**        |
| termina |   |                  |                   |                   |
| tions** |   |                  |                   |                   |
+=========+===+==================+===================+===================+
| [An     |   | **From September |                   |                   |
| timony, |   | through October  |                   |                   |
| Whol    |   | 2003, a negative |                   |                   |
| e-Water |   | bias is          |                   |                   |
| Recover |   | demonstrated.    |                   |                   |
| able](h |   | All data since   |                   |                   |
| ttp://b |   | November are     |                   |                   |
| qs.usgs |   | within one\      |                   |                   |
| .gov/bs |   | f-pseudosigma of |                   |                   |
| p/QADAT |   | the median.**    |                   |                   |
| A_all/J |   |                  |                   |                   |
| AN04OWQ |   | **No corrective  |                   |                   |
| RL01097 |   | action           |                   |                   |
| 1.gif)\ |   | necessary.**     |                   |                   |
| GFAA    |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 3122    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1097(1) |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**A    |   | The data still   | **Service         | **The GFAA was    |
| rsenic, |   | indicate high    | agreement         | recently serviced |
| Whol    |   | variability. Two | discontinued in   | by the            |
| e-Water |   | of the last      | April has been    | manufacturer and  |
| Reco    |   | seven values     | renewed.**        | several problems  |
| verable |   | received (29%)   |                   | corrected. It     |
| **](htt |   | are outside of   |                   | will be monitored |
| p://bqs |   | +/-2             |                   | closely to be     |
| .usgs.g |   | f-pseudosigma.   |                   | sure that         |
| ov/bsp/ |   |                  |                   | problems with the |
| QADATA_ |   |                  |                   | instrument do not |
| all/JAN |   |                  |                   | recur.**          |
| 04OWQRL |   |                  |                   |                   |
| 010021. |   |                  |                   |                   |
| gif)**\ |   |                  |                   |                   |
| GFAA    |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 3119    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 10      |   |                  |                   |                   |
| 02(1)** |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| a       |   |                  |                   |                   |
| rsenic, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 3119,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1       |   |                  |                   |                   |
| 002(1)* |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | High variability | Due to factors    | The cost          |
|         |   | is still         | beyond our        | reduction         |
| QADATA  |   | demonstrated.    | control and the   | policies have     |
| Summary |   | Three of the     | uncertainty of    | been discontinued |
| Nov     |   | last seven       | this facility's   | for FY04. Samples |
| 2003    |   | values received  | continued         | will be retested  |
|         |   | (43%) are        | existence,        | to see if any     |
|         |   | outside of +/-2  | certain cost      | biases are        |
|         |   | f-pseudosigma.   | reduction         | detected.         |
|         |   |                  | policies were     |                   |
|         |   |                  | initiated in      |                   |
|         |   |                  | April, 2003. This |                   |
|         |   |                  | may have led to   |                   |
|         |   |                  | undetected        |                   |
|         |   |                  | instrument        |                   |
|         |   |                  | deficiencies over |                   |
|         |   |                  | time in the trace |                   |
|         |   |                  | metals section.   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | The most         | Problems with low | All of our lamp   |
|         |   | recently         | energy from the   | power supplies    |
| QADATA  |   | received data    | Arsenic lamp have | for the graphite  |
| Summary |   | indicate         | led to increased  | furnace have been |
| Sept    |   | on-going         | variability and   | evaluated and     |
| 2003    |   | problems with    | decreased         | those that need   |
|         |   | variability and  | sensitivity.      | to be replaced    |
|         |   | a positive bias. |                   | have been         |
|         |   |                  |                   | identified. The   |
|         |   | Since October    |                   | instrument is     |
|         |   | 2002, five out   |                   | also currently    |
|         |   | of 19 points     |                   | being run in the  |
|         |   | (26%) are        |                   | single rather     |
|         |   | outside of +/-2  |                   | than              |
|         |   | f-pseudosigma    |                   | multi-element     |
|         |   | with 3 of 19     |                   | mode to help      |
|         |   | (16%) outside of |                   | increase          |
|         |   | +/-3 f-          |                   | sensitivity and   |
|         |   | pseudosigma.     |                   | decrease the      |
|         |   |                  |                   | variability.      |
+---------+---+------------------+-------------------+-------------------+
| From    |   | The two new      | The problems with | We will continue  |
|         |   | values received  | the GFAA at low   | to monitor the    |
| QADATA  |   | since the last   | wavelengths have  | GFAA closely to   |
| Summary |   | QADATA Summary   | been corrected.   | be sure that the  |
| July    |   | are both within\ |                   | problems do not   |
| 2003    |   | one              |                   | reappear.         |
|         |   | f-pseudosigma of |                   |                   |
|         |   | the median.      |                   |                   |
|         |   |                  |                   |                   |
|         |   | Analysis should  |                   |                   |
|         |   | be closely       |                   |                   |
|         |   | monitored until  |                   |                   |
|         |   | the next QADATA  |                   |                   |
|         |   | Summary is       |                   |                   |
|         |   | distributed.     |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | The variability  | We will be        | More service work |
|         |   | is beyond        | running a new     | was done to       |
| QADATA  |   | acceptable       | Demonstration of  | correct problems  |
| Summary |   | levels. IBSP     | Capability for    | with the GFAA.    |
| May     |   | recommends that  | Arsenic before    | Past samples have |
| 2003    |   | the source of    | any more samples  | been checked by   |
|         |   | the problem be   | are analyzed.     | other techniques  |
|         |   | determined       |                   | (ICP, ICP/MS) to  |
|         |   | before any more  |                   | make sure that    |
|         |   | analyses of      |                   | values reported   |
|         |   | environmental    |                   | are correct.      |
|         |   | samples are      |                   |                   |
|         |   | performed.       |                   |                   |
|         |   |                  |                   |                   |
|         |   | Since October    |                   |                   |
|         |   | 2002, four out   |                   |                   |
|         |   | of 13 points     |                   |                   |
|         |   | (31%) are        |                   |                   |
|         |   | outside of +/-2  |                   |                   |
|         |   | f-pseudosigma    |                   |                   |
|         |   | with 3 of 13     |                   |                   |
|         |   | (23%) outside of |                   |                   |
|         |   | +/-3             |                   |                   |
|         |   | f-pseudosigma.   |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | High variability | A problem with    | Service was       |
|         |   | is still         | the beam combiner | performed on the  |
| QADATA  |   | exhibited. Since | on the SIMAA      | AA to correct the |
| Summary |   | late October     | graphite furnace  | problem. Samples  |
| March   |   | 2002, three out  | may have led to   | are being rerun   |
| 2003    |   | of 9 points      | some erratic      | to see if any     |
|         |   | (33%) are        | results.          | data needs to be  |
|         |   | outside of +/-2  |                   | corrected.        |
|         |   | f-pseudosigma.   |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | Increased        | Problem with      | Amount of matrix  |
|         |   | variability      | matrix modifier.  | modifier used was |
| QADATA  |   | starting late    |                   | adjusted to give  |
| Summary |   | October 2002.    |                   | more consistent   |
| January |   |                  |                   | results.          |
| 2003    |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**C    |   | High variability |                   |                   |
| admium, |   | demonstrated     |                   |                   |
| F       |   | during October   |                   |                   |
| iltered |   | 2003. The three  |                   |                   |
| **](htt |   | most recent      |                   |                   |
| p://bqs |   | values are       |                   |                   |
| .usgs.g |   | within one       |                   |                   |
| ov/bsp/ |   | f-pseudosigma of |                   |                   |
| QADATA_ |   | the median.      |                   |                   |
| all/JAN |   |                  |                   |                   |
| 04OWQRL |   | **No corrective  |                   |                   |
| 01025F. |   | action           |                   |                   |
| gif)**\ |   | necessary.**     |                   |                   |
| GFAA**  |   |                  |                   |                   |
|         |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1554    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1025(F) |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Ch   |   | High variability | **Service         | **The GFAA was    |
| romium, |   | demonstrated     | agreement         | recently serviced |
| F       |   | throughout       | discontinued in   | by the            |
| iltered |   | September and    | April has been    | manufacturer and  |
| **](htt |   | October 2003.    | renewed.**        | several problems  |
| p://bqs |   | Although all     |                   | corrected. It     |
| .usgs.g |   | these data are   |                   | will be monitored |
| ov/bsp/ |   | from the same    |                   | closely to be     |
| QADATA_ |   | reference        |                   | sure that         |
| all/JAN |   | material, this   |                   | problems with the |
| 04OWQRL |   | material is not  |                   | instrument do not |
| 01030I. |   | showing a        |                   | recur.**          |
| gif)**\ |   | problem for      |                   |                   |
| GFAA**  |   | whole-water      |                   |                   |
|         |   | recoverable      |                   |                   |
| labcode |   | chromium         |                   |                   |
| 1936    |   | (labcode 3019)   |                   |                   |
| p       |   | or for chromium  |                   |                   |
| armcode |   | at the NWQL.     |                   |                   |
| 1030(I) |   |                  |                   |                   |
|         |   | **The three most |                   |                   |
|         |   | recent values    |                   |                   |
|         |   | are within one   |                   |                   |
|         |   | f-pseudosigma of |                   |                   |
|         |   | the median.**    |                   |                   |
|         |   |                  |                   |                   |
|         |   | **Analysis       |                   |                   |
|         |   | should be        |                   |                   |
|         |   | closely          |                   |                   |
|         |   | monitored until  |                   |                   |
|         |   | the next QADATA  |                   |                   |
|         |   | Summary is       |                   |                   |
|         |   | distributed.**   |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| ch      |   |                  |                   |                   |
| romium, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1936,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1       |   |                  |                   |                   |
| 030(1)* |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | The three most   | Due to factors    | The cost          |
|         |   | recent values    | beyond our        | reduction         |
| QADATA  |   | are all outside  | control and the   | policies have     |
| Summary |   | +/-2             | uncertainty of    | been discontinued |
| Nov     |   | f-pseudosigma    | this facility's   | for FY04. Samples |
| 2003    |   | indicating high  | continued         | will be retested  |
|         |   | variability.     | existence,        | to see if any     |
|         |   | These values are | certain cost      | biases are        |
|         |   | all from the     | reduction         | detected.         |
|         |   | same reference   | policies were     |                   |
|         |   | material which   | initiated in      |                   |
|         |   | is used for      | April, 2003. This |                   |
|         |   | chromium,        | may have led to   |                   |
|         |   | whole-water      | undetected        |                   |
|         |   | recoverable      | instrument        |                   |
|         |   | (OWQRL and NWQL) | deficiencies over |                   |
|         |   | and chromium,    | time in the trace |                   |
|         |   | filtered (NWQL)  | metals section.   |                   |
|         |   | with no apparent |                   |                   |
|         |   | problems.        |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Se   |   | **The            | **Service         | **The GFAA was    |
| lenium, |   | variability has  | agreement         | recently serviced |
| Whol    |   | improved.        | discontinued in   | by the            |
| e-Water |   | Although data    | April has been    | manufacturer and  |
| Reco    |   | are now biased   | renewed.**        | several problems  |
| verable |   | slightly         |                   | corrected. It     |
| **](htt |   | negative, all    |                   | will be monitored |
| p://bqs |   | data received    |                   | closely to be     |
| .usgs.g |   | since            |                   | sure that         |
| ov/bsp/ |   | mid-September    |                   | problems with the |
| QADATA_ |   | 2003 are within  |                   | instrument do not |
| all/JAN |   | one              |                   | recur.**          |
| 04OWQRL |   | f-pseudosigma of |                   |                   |
| 011470. |   | the median.**    |                   |                   |
| gif)**\ |   |                  |                   |                   |
| GFAA**  |   | **Analysis       |                   |                   |
|         |   | should be        |                   |                   |
| labcode |   | closely          |                   |                   |
| 3124    |   | monitored until  |                   |                   |
| p       |   | the next QADATA  |                   |                   |
| armcode |   | Summary is       |                   |                   |
| 1147(0) |   | distributed.**   |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| se      |   |                  |                   |                   |
| lenium, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 3124,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1       |   |                  |                   |                   |
| 147(0)* |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | The variability  | Due to factors    | The cost          |
|         |   | has recently     | beyond our        | reduction         |
| QADATA  |   | increased. Two   | control and the   | policies have     |
| Summary |   | of the last six  | uncertainty of    | been discontinued |
| Nov     |   | values received  | this facility's   | for FY04. Samples |
| 2003    |   | (33%) are        | continued         | will be retested  |
|         |   | outside of +/-2  | existence,        | to see if any     |
|         |   | f-pseudosigma.   | certain cost      | biases are        |
|         |   |                  | reduction         | detected.         |
|         |   |                  | policies were     |                   |
|         |   |                  | initiated in      |                   |
|         |   |                  | April, 2003. This |                   |
|         |   |                  | may have led to   |                   |
|         |   |                  | undetected        |                   |
|         |   |                  | instrument        |                   |
|         |   |                  | deficiencies over |                   |
|         |   |                  | time in the trace |                   |
|         |   |                  | metals section.   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Major | * |                  | **OWQRL**         | **Corrective**    |
| De      | * |                  |                   |                   |
| termina | P |                  | **Lab Comment**   | **Action**        |
| tions** | r |                  |                   |                   |
|         | o |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**Alka | * |                  |                   |                   |
| linity, | * |                  |                   |                   |
| Whol    | C |                  |                   |                   |
| e-Water | o |                  |                   |                   |
| Reco    | r |                  |                   |                   |
| verable | r |                  |                   |                   |
| **](htt | e |                  |                   |                   |
| p://bqs | c |                  |                   |                   |
| .usgs.g | t |                  |                   |                   |
| ov/bsp/ | i |                  |                   |                   |
| QADATA_ | v |                  |                   |                   |
| all/JAN | e |                  |                   |                   |
| 04OWQRL | a |                  |                   |                   |
| 90410A. | c |                  |                   |                   |
| gif)**\ | t |                  |                   |                   |
| Titr    | i |                  |                   |                   |
| imetric | o |                  |                   |                   |
| labcode | n |                  |                   |                   |
| 0070    | t |                  |                   |                   |
| p       | a |                  |                   |                   |
| armcode | k |                  |                   |                   |
| 9       | e |                  |                   |                   |
| 0410A** | n |                  |                   |                   |
|         | b |                  |                   |                   |
|         | y |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | O |                  |                   |                   |
|         | W |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | R |                  |                   |                   |
|         | L |                  |                   |                   |
|         | a |                  |                   |                   |
|         | p |                  |                   |                   |
|         | p |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | o |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | f |                  |                   |                   |
|         | i |                  |                   |                   |
|         | x |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
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|         | d |                  |                   |                   |
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|         | o |                  |                   |                   |
|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | i |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
|         | D |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | A |                  |                   |                   |
|         | u |                  |                   |                   |
|         | g |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | w |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | c |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | p |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | v |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
|         | y |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         |   |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | N |                  |                   |                   |
|         | o |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | c |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | y |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| alka    |   |                  |                   |                   |
| linity, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 0070,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 90      |   |                  |                   |                   |
| 410(A)* |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | Lower-level      | A new analyst was | After the bias    |
|         |   | reference        | being trained in  | was detected, the |
| QADATA  |   | materials        | July. The         | analyst was       |
| Summary |   | exhibit a large  | protocol for      | retrained. No low |
| Nov     |   | positive bias    | setting the       | level blind       |
| 2003    |   | (up to 38%) with | titrator speed    | samples for       |
|         |   | the bias         | was not explained | alkalinity have   |
|         |   | decreasing as    | properly at       | been received     |
|         |   | the alkalinity   | first, leading to | since the end of  |
|         |   | increases. The   | the bias shown on | July.             |
|         |   | bias started     | the chart for     |                   |
|         |   | around the       | July for the low  |                   |
|         |   | beginning of     | level samples.    |                   |
|         |   | July 2003.       |                   |                   |
|         |   |                  |                   |                   |
|         |   | Past laboratory  |                   |                   |
|         |   | comments suggest |                   |                   |
|         |   | that perhaps the |                   |                   |
|         |   | autotitrator     |                   |                   |
|         |   | speed is set too |                   |                   |
|         |   | fast for         |                   |                   |
|         |   | low-level        |                   |                   |
|         |   | samples.         |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Alka | * |                  |                   |                   |
| linity, | * |                  |                   |                   |
| F       | C |                  |                   |                   |
| iltered | o |                  |                   |                   |
| **](htt | r |                  |                   |                   |
| p://bqs | r |                  |                   |                   |
| .usgs.g | e |                  |                   |                   |
| ov/bsp/ | c |                  |                   |                   |
| QADATA_ | t |                  |                   |                   |
| all/JAN | i |                  |                   |                   |
| 04OWQRL | v |                  |                   |                   |
| 298010. | e |                  |                   |                   |
| gif)**\ | a |                  |                   |                   |
| Titr    | c |                  |                   |                   |
| imetric | t |                  |                   |                   |
| labcode | i |                  |                   |                   |
| 3160    | o |                  |                   |                   |
| p       | n |                  |                   |                   |
| armcode | t |                  |                   |                   |
| 298     | a |                  |                   |                   |
| 01(0)** | k |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | b |                  |                   |                   |
|         | y |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | O |                  |                   |                   |
|         | W |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | R |                  |                   |                   |
|         | L |                  |                   |                   |
|         | a |                  |                   |                   |
|         | p |                  |                   |                   |
|         | p |                  |                   |                   |
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|         | a |                  |                   |                   |
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|         | s |                  |                   |                   |
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|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | f |                  |                   |                   |
|         | i |                  |                   |                   |
|         | x |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | p |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | v |                  |                   |                   |
|         | i |                  |                   |                   |
|         | o |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
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|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | i |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
|         | D |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | A |                  |                   |                   |
|         | u |                  |                   |                   |
|         | g |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
|         | w |                  |                   |                   |
|         | l |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
|         | t |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | c |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | p |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | v |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
|         | y |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         |   |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | N |                  |                   |                   |
|         | o |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | c |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | y |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| alka    |   |                  |                   |                   |
| linity, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 3160,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 29      |   |                  |                   |                   |
| 801(0)* |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    |   | Lower-level      | A new analyst was | After the bias    |
|         |   | reference        | being trained in  | was detected, the |
| QADATA  |   | materials        | July. The         | analyst was       |
| Summary |   | exhibit a        | protocol for      | retrained. No low |
| Nov     |   | positive bias    | setting the       | level blind       |
| 2003    |   | with the bias    | titrator speed    | samples for       |
|         |   | decreasing as    | was not explained | alkalinity have   |
|         |   | the alkalinity   | properly at       | been received     |
|         |   | increases. The   | first, leading to | since the end of  |
|         |   | bias started     | the bias shown on | July.             |
|         |   | around the       | the chart for     |                   |
|         |   | beginning of     | July for the low  |                   |
|         |   | July 2003.       | level samples.    |                   |
|         |   |                  |                   |                   |
|         |   | Past laboratory  |                   |                   |
|         |   | comments suggest |                   |                   |
|         |   | that perhaps the |                   |                   |
|         |   | autotitrator     |                   |                   |
|         |   | speed is set too |                   |                   |
|         |   | fast for         |                   |                   |
|         |   | low-level        |                   |                   |
|         |   | samples.         |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+