##### QADATA Summary -- November 2003

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 04/01/03 through 10/28/03;
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.

Charts containing all data received as of 11/17/03 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 blue, 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

Orthophosphate, Filtered, Colorimetric, Labcode 1974, Parmcode 0671H . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 3

Barium, Whole-Water Recoverable, ICP, Labcode 2352, Parmcode 1007C . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 4

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

Cadmium, Filtered, GFAA, Labcode 1554, Parmcode 1025F . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 5

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

Iron, Whole Water Recoverable, ICP, Labcode 2359, Parmcode 1045C . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . 6

**OWQRL**

Analyte

**Phosphorus, Filtered,** Colorimetric, Labcode 1983, Parmcode 0666D . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 7

**Phosphorus, Whole-Water Recoverable,** Colorimetric, Labcode 1984,
Parmcode 0665D . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 7

**Phosphorus, Whole-Water Recoverable, EPA,** Colorimetric, Labcode
1993, Parmcode 0665E . . . . . . . . . . . . . . . . . . . .. . . . . .
. . . . . . . . . 7

**Arsenic, Whole-Water Recoverable,** GFAA, Labcode 3119, Parmcode
1002(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . 8

**Chromium, Filtered,** GFAA, Labcode 1936, Parmcode 1030(1) . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 9

**Selenium, Whole-Water Recoverable,** GFAA, Labcode 3124, Parmcode
1147(0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . 9

**Alkalinity, Whole-Water Recoverable,** Titrimetric, Labcode 0070,
Parmcode 90410A . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . 9

**Alkalinity, Filtered,** Titrimetric, Labcode 3160, Parmcode 29801(0) .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . 9

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.**

+---------+---+-----------------+-------------------+--------------------+
| **N     |   | **Problem**     | **NWQL**          | **Corrective**     |
| utrient |   |                 |                   |                    |
| De      |   |                 | **Lab Comment**   | **Action**         |
| termina |   |                 |                   |                    |
| tions** |   |                 |                   |                    |
+=========+===+=================+===================+====================+
| [O      |   | **NS10 is still | **NS10 still      | **The NWQL will    |
| rthopho |   | showing a       | exhibits a        | continue to seek   |
| sphate, |   | negative\       | negative bias     | causes for the     |
| Fi      |   | bias (-7.9%).   | that is not       | negative bias for  |
| ltered] |   | The OWQRL       | representative of | NS10. We will      |
| (http:/ |   | shows\          | other QC samples  | continue to        |
| /bqs.us |   | a -2.6 % bias   | with a similar    | monitor            |
| gs.gov/ |   | for this        | concentration. A  | performance for    |
| bsp/QAD |   | reference       | stronger cleaning | NS10 and other     |
| ATA_all |   | material.**     | protocol for the  | certified          |
| /NOV03N |   |                 | analytical line   | reference samples  |
| WQL0067 |   | **The overall   | instituted in     | at a similar       |
| 1H.gif) |   | negative bias   | August at first   | concentration.**   |
|         |   | demonstrated by | seemed to improve |                    |
| **Color |   | this analytical | the performance   |                    |
| imetric |   | line is         | for NS10, but     |                    |
| labcode |   | minimal\        | later samples     |                    |
| 1974    |   | (-2.2%) and is  | still exhibit the |                    |
| p       |   | due exclusively | negative bias     |                    |
| armcode |   | to data from    | observed for some |                    |
| 0671H** |   | NS10.**         | time.**           |                    |
+---------+---+-----------------+-------------------+--------------------+
| *P      |   |                 |                   |                    |
| revious |   |                 |                   |                    |
| c       |   |                 |                   |                    |
| omments |   |                 |                   |                    |
| for     |   |                 |                   |                    |
| o       |   |                 |                   |                    |
| rthopho |   |                 |                   |                    |
| sphate, |   |                 |                   |                    |
| fi      |   |                 |                   |                    |
| ltered, |   |                 |                   |                    |
| labcode |   |                 |                   |                    |
| 1974,   |   |                 |                   |                    |
| p       |   |                 |                   |                    |
| armcode |   |                 |                   |                    |
| 0671H*  |   |                 |                   |                    |
+---------+---+-----------------+-------------------+--------------------+
| From    | R |                 | A new vial of the | The Nutrients Unit |
|         | e |                 | NIST certified    | will continue to   |
| >       | s |                 | reference sample  | monitor IBSP       |
|  QADATA | u |                 | purchased by the  | control charts and |
| >       | l |                 | NWQL was opened   | will analyze the   |
| Summary | t |                 | and a sample at a | new QC samples as  |
| > Se    | s |                 | concentration     | well as on-line    |
| ptember | f |                 | similar to NS10   | NIST QC samples.   |
| > 2003  | o |                 | was prepared and  | We will continue   |
|         | r |                 | analyzed. Values  | to look for other  |
|         | N |                 | were slightly     | causes for the low |
|         | S |                 | higher than the   | bias for NS10.     |
|         | 1 |                 | calculated mean   |                    |
|         | 0 |                 | value. Samples    |                    |
|         | a |                 | made at three     |                    |
|         | r |                 | concentrations    |                    |
|         | e |                 | from a new        |                    |
|         | s |                 | commercially      |                    |
|         | t |                 | prepared          |                    |
|         | i |                 | certified         |                    |
|         | l |                 | reference         |                    |
|         | l |                 | material were     |                    |
|         | d |                 | also analyzed.    |                    |
|         | e |                 | The values for    |                    |
|         | m |                 | these samples     |                    |
|         | o |                 | were close to but |                    |
|         | n |                 | slightly lower    |                    |
|         | s |                 | than the          |                    |
|         | t |                 | calculated mean.  |                    |
|         | r |                 |                   |                    |
|         | a |                 |                   |                    |
|         | t |                 |                   |                    |
|         | i |                 |                   |                    |
|         | n |                 |                   |                    |
|         | g |                 |                   |                    |
|         | a |                 |                   |                    |
|         | n |                 |                   |                    |
|         | e |                 |                   |                    |
|         | g |                 |                   |                    |
|         | a |                 |                   |                    |
|         | t |                 |                   |                    |
|         | i |                 |                   |                    |
|         | v |                 |                   |                    |
|         | e |                 |                   |                    |
|         | b |                 |                   |                    |
|         | i |                 |                   |                    |
|         | a |                 |                   |                    |
|         | s |                 |                   |                    |
|         | w |                 |                   |                    |
|         | i |                 |                   |                    |
|         | t |                 |                   |                    |
|         | h |                 |                   |                    |
|         | a |                 |                   |                    |
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|         | o |                 |                   |                    |
|         | u |                 |                   |                    |
|         | t |                 |                   |                    |
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|         | - |                 |                   |                    |
|         | h |                 |                   |                    |
|         | a |                 |                   |                    |
|         | l |                 |                   |                    |
|         | f |                 |                   |                    |
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|         | t |                 |                   |                    |
|         | h |                 |                   |                    |
|         | e |                 |                   |                    |
|         | N |                 |                   |                    |
|         | S |                 |                   |                    |
|         | 1 |                 |                   |                    |
|         | 0 |                 |                   |                    |
|         | d |                 |                   |                    |
|         | a |                 |                   |                    |
|         | t |                 |                   |                    |
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|         | f |                 |                   |                    |
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|         | . |                 |                   |                    |
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|         | d |                 |                   |                    |
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|         | d |                 |                   |                    |
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|         | \ |                 |                   |                    |
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|         | 2 |                 |                   |                    |
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|         | . |                 |                   |                    |
+---------+---+-----------------+-------------------+--------------------+
|         |   |                 |                   |                    |
+---------+---+-----------------+-------------------+--------------------+

+---------+---+------------------+-------------------+-------------------+
| **Trace | * |                  | **NWQL**          | **Corrective**    |
| Metal   | * |                  |                   |                   |
| De      | P |                  | **Lab Comment**   | **Action**        |
| termina | r |                  |                   |                   |
| tions** | o |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**     | * |                  | **The NWQL will   | **No corrective   |
| Barium, | * |                  | continue to       | action needed at  |
| Whol    | T |                  | monitor WWR       | this time,        |
| e-Water | h |                  | barium QC on the  | however internal  |
| Recover | e |                  | new instruments   | QC including      |
| able**] | r |                  | to determine if a | NIST-traceable    |
| (http:/ | e |                  | bias continues.** | third party check |
| /bqs.us | a |                  |                   | standards will be |
| gs.gov/ | r |                  |                   | used for          |
| bsp/QAD | e |                  |                   | monitoring bias   |
| ATA_all | n |                  |                   | and               |
| /NOV03N | o |                  |                   | variability.**    |
| WQL0100 | t |                  |                   |                   |
| 7C.gif) | e |                  |                   |                   |
| **ICP** | n |                  |                   |                   |
|         | o |                  |                   |                   |
| **      | u |                  |                   |                   |
| labcode | g |                  |                   |                   |
| 2352**  | h |                  |                   |                   |
|         | d |                  |                   |                   |
| **p     | a |                  |                   |                   |
| armcode | t |                  |                   |                   |
| 1007C** | a |                  |                   |                   |
|         | f |                  |                   |                   |
|         | r |                  |                   |                   |
|         | o |                  |                   |                   |
|         | m |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | w |                  |                   |                   |
|         | I |                  |                   |                   |
|         | C |                  |                   |                   |
|         | P |                  |                   |                   |
|         | s |                  |                   |                   |
|         | ( |                  |                   |                   |
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|         |   |                  |                   |                   |
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|         | A |                  |                   |                   |
|         | n |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| barium, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| ICP,    |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 2352,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1007C*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | T |                  | New ICP           | The NWQL will     |
|         | h |                  | instrumentation   | continue to       |
| >       | e |                  | went online       | monitor WWR       |
|  QADATA | n |                  | beginning in      | barium QC on the  |
| >       | e |                  | August. There is  | new instruments   |
| Summary | g |                  | no IBSP data      | to determine if a |
| > Se    | a |                  | provided from     | bias continues.   |
| ptember | t |                  | this time to      |                   |
| > 2003  | i |                  | date. Online QC   |                   |
|         | v |                  | data for these    |                   |
|         | e |                  | new instruments   |                   |
|         | b |                  | indicate no       |                   |
|         | i |                  | appreciable bias  |                   |
|         | a |                  | at these          |                   |
|         | s |                  | concentrations. A |                   |
|         | ( |                  | Rapi-Note and an  |                   |
|         | - |                  | NWQL Technical    |                   |
|         | 5 |                  | Memorandum will   |                   |
|         | . |                  | be issued in the  |                   |
|         | 2 |                  | near future       |                   |
|         | % |                  | detailing the use |                   |
|         | f |                  | of the new ICPs   |                   |
|         | o |                  | for Whole-Water   |                   |
|         | r |                  | Recoverable       |                   |
|         | W |                  | analyses.         |                   |
|         | Y |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | l |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | m |                  |                   |                   |
|         | p |                  |                   |                   |
|         | r |                  |                   |                   |
|         | o |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | T |                  | The NWQL agrees   | The NWQL will     |
|         | h |                  | with IBSP that    | continue to       |
| >       | e |                  | the barium bias   | monitor the       |
|  QADATA | h |                  | is getting worse. | barium WWR line   |
| >       | i |                  | New ICP           | on the different  |
| Summary | s |                  | instrumentation   | instrument to see |
| > July  | t |                  | has come online   | if there is an    |
| > 2003  | o |                  | for the dissolved | improvement. The  |
|         | r |                  | line.             | ICP WWR method    |
|         | i |                  |                   | has been moved to |
|         | c |                  |                   | a different       |
|         | a |                  |                   | instrument that   |
|         | l |                  |                   | has had recent    |
|         | n |                  |                   | maintenance. We   |
|         | e |                  |                   | will reanalyze    |
|         | g |                  |                   | IBSP samples on   |
|         | a |                  |                   | this              |
|         | t |                  |                   | instrumentation.  |
|         | i |                  |                   | We plan to have   |
|         | v |                  |                   | the new Perkin    |
|         | e |                  |                   | Elmer ICP         |
|         | b |                  |                   | instrumentation   |
|         | i |                  |                   | online this       |
|         | a |                  |                   | summer.           |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | m |                  |                   |                   |
|         | p |                  |                   |                   |
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|         | o |                  |                   |                   |
|         | v |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | y |                  |                   |                   |
|         | b |                  |                   |                   |
|         | e |                  |                   |                   |
|         | g |                  |                   |                   |
|         | e |                  |                   |                   |
|         | t |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | g |                  |                   |                   |
|         | w |                  |                   |                   |
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|         | r |                  |                   |                   |
|         | s |                  |                   |                   |
|         | e |                  |                   |                   |
|         | . |                  |                   |                   |
|         | I |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | g |                  |                   |                   |
|         | a |                  |                   |                   |
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|         | m |                  |                   |                   |
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|         | d |                  |                   |                   |
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|         | h |                  |                   |                   |
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|         | p |                  |                   |                   |
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|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
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|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | r |                  |                   |                   |
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|         | s |                  |                   |                   |
|         | u |                  |                   |                   |
|         | l |                  |                   |                   |
|         | t |                  |                   |                   |
|         | s |                  |                   |                   |
|         | b |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
|         | z |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | o |                  |                   |                   |
|         | f |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | w |                  |                   |                   |
|         | I |                  |                   |                   |
|         | C |                  |                   |                   |
|         | P |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | m |                  |                   |                   |
|         | p |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | T |                  | Online QC charts  | The NWQL will     |
|         | h |                  | show that the     | reanalyze samples |
| >       | e |                  | negative bias     | on the new ICPs   |
|  QADATA | h |                  | increased         | to compare the    |
| >       | i |                  | significantly     | data, once we     |
| Summary | s |                  | during mid-March. | have assessed the |
| > May   | t |                  | Several           | WWR prove-out     |
| > 2003  | o |                  | troubleshooting   | data for the new  |
|         | r |                  | measures were     | instruments. We   |
|         | i |                  | checked on the    | will continue to  |
|         | c |                  | instrument        | monitor online QC |
|         | a |                  | including: plasma | charts to see if  |
|         | l |                  | power, pump       | the negative bias |
|         | n |                  | efficiency,       | has improved as a |
|         | e |                  | cleaning of       | result of the     |
|         | g |                  | nebulizer and     | optical path      |
|         | a |                  | spray chamber,    | adjustment.       |
|         | t |                  | dark current      |                   |
|         | i |                  | test, all of      |                   |
|         | v |                  | which showed no   |                   |
|         | e |                  | indication of a   |                   |
|         | b |                  | problem. The only |                   |
|         | i |                  | test that showed  |                   |
|         | a |                  | a significant     |                   |
|         | s |                  | problem was that  |                   |
|         | p |                  | the Purged        |                   |
|         | e |                  | Optical Path,     |                   |
|         | r |                  | which needed      |                   |
|         | s |                  | adjusting.        |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
|         | I |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | m |                  |                   |                   |
|         | m |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | u |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | o |                  |                   |                   |
|         | f |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | w |                  |                   |                   |
|         | I |                  |                   |                   |
|         | C |                  |                   |                   |
|         | P |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
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|         | m |                  |                   |                   |
|         | p |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**C    | * |                  | **The bias is not | **New calibration |
| admium, | * |                  | evident on NWQL   | standards were    |
| Whol    | A |                  | QC charts.**      | made and verified |
| e-Water | p |                  |                   | for use at the    |
| Recover | o |                  |                   | end of July.      |
| able**] | s |                  |                   | NIST-traceable    |
| (http:/ | i |                  |                   | third party check |
| /bqs.us | t |                  |                   | standards (TPC)   |
| gs.gov/ | i |                  |                   | were implemented  |
| bsp/QAD | v |                  |                   | in September.     |
| ATA_all | e |                  |                   | There is not      |
| /NOV03N | b |                  |                   | enough data       |
| WQL0102 | i |                  |                   | collected from    |
| 7F.gif) | a |                  |                   | the TPC standards |
| **GFAA  | s |                  |                   | for evaluation.   |
| labcode | i |                  |                   | We will continue  |
| 1555    | s |                  |                   | to monitor        |
| p       | s |                  |                   | internal QC and   |
| armcode | t |                  |                   | IBSP charts for   |
| 1027F** | i |                  |                   | bias and          |
|         | l |                  |                   | variability. If   |
|         | l |                  |                   | the TPC standards |
|         | e |                  |                   | indicate a bias,  |
|         | v |                  |                   | calibration       |
|         | i |                  |                   | standards will be |
|         | d |                  |                   | remade and        |
|         | e |                  |                   | verified.**       |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | , |                  |                   |                   |
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|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| admium, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| GFAA,   |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1555,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1027F*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| 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.             |                   |
|         | f |                  |                   |                   |
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|         | m |                  |                   |                   |
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|         | r |                  |                   |                   |
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|         | f |                  |                   |                   |
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|         | r |                  |                   |                   |
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|         | n |                  |                   |                   |
|         | c |                  |                   |                   |
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|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
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|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | s |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
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|         | y |                  |                   |                   |
|         | z |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | O |                  |                   |                   |
|         | W |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | R |                  |                   |                   |
|         | L |                  |                   |                   |
|         | d |                  |                   |                   |
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|         | t |                  |                   |                   |
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|         | x |                  |                   |                   |
|         | h |                  |                   |                   |
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|         | i |                  |                   |                   |
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|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| 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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|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**C    | * |                  | **The bias is not | **New calibration |
| admium, | * |                  | evident on NWQL   | standards were    |
| Filt    | A |                  | QC charts.**      | made and verified |
| ered**] | p |                  |                   | for use at the    |
| (http:/ | o |                  |                   | end of July.      |
| /bqs.us | s |                  |                   | NIST-traceable    |
| gs.gov/ | i |                  |                   | third party check |
| bsp/QAD | t |                  |                   | standards (TPC)   |
| ATA_all | i |                  |                   | were implemented  |
| /NOV03N | v |                  |                   | in September.     |
| WQL0102 | e |                  |                   | There is not      |
| 5F.gif) | b |                  |                   | enough data       |
| **GFAA  | i |                  |                   | collected from    |
| labcode | a |                  |                   | the TPC standards |
| 1554    | s |                  |                   | for evaluation.   |
| p       | i |                  |                   | We will continue  |
| armcode | s |                  |                   | to monitor        |
| 1025F** | d |                  |                   | internal QC and   |
|         | e |                  |                   | IBSP charts for   |
|         | m |                  |                   | bias and          |
|         | o |                  |                   | variability. If   |
|         | n |                  |                   | the TPC standards |
|         | s |                  |                   | indicate a bias,  |
|         | t |                  |                   | calibration       |
|         | r |                  |                   | standards will be |
|         | a |                  |                   | remade and        |
|         | t |                  |                   | verified.**       |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | 8 |                  |                   |                   |
|         | . |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | % |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | T |                  |                   |                   |
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|         | a |                  |                   |                   |
|         | d |                  |                   |                   |
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|         | i |                  |                   |                   |
|         | u |                  |                   |                   |
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|         | , |                  |                   |                   |
|         | w |                  |                   |                   |
|         | h |                  |                   |                   |
|         | o |                  |                   |                   |
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|         | - |                  |                   |                   |
|         | w |                  |                   |                   |
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|         | t |                  |                   |                   |
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|         | r |                  |                   |                   |
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|         | l |                  |                   |                   |
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|         | y |                  |                   |                   |
|         | G |                  |                   |                   |
|         | F |                  |                   |                   |
|         | A |                  |                   |                   |
|         | A |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Ch   | * |                  | **NWQL also       | **New whole water |
| romium, | * |                  | identifies a      | recoverable       |
| Whol    | A |                  | chromium whole    | calibration       |
| e-Water | n |                  | water negative    | standards were    |
| Recover | e |                  | bias. New         | made and verified |
| able**] | g |                  | intermediate      | October 20th.     |
| (http:/ | a |                  | stocks were       | NIST-traceable    |
| /bqs.us | t |                  | prepared in July. | third party check |
| gs.gov/ | i |                  | Dissolved and     | standards (TPC)   |
| bsp/QAD | v |                  | whole water       | were implemented  |
| ATA_all | e |                  | calibration       | in September. As  |
| /NOV03N | b |                  | standards were    | of yet, we do not |
| WQL0103 | i |                  | made from the     | have enough data  |
| 4E.gif) | a |                  | fresh stocks in   | to evaluate bias  |
| **GFAA  | s |                  | July. The QC      | and variability   |
| labcode | ( |                  | charts for        | with the TPC. We  |
| 1937    | - |                  | dissolved         | continue to       |
| p       | 1 |                  | chromium do not   | monitor internal  |
| armcode | 5 |                  | show a bias.**    | QC and IBSP       |
| 1034E** | . |                  |                   | charts for bias   |
|         | 0 |                  |                   | and variability   |
|         | % |                  |                   | after these       |
|         | ) |                  |                   | changes.**        |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | d |                  |                   |                   |
|         | e |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | l |                  |                   |                   |
|         | o |                  |                   |                   |
|         | p |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | J |                  |                   |                   |
|         | u |                  |                   |                   |
|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [       | * |                  | **One of the      | **The ICP-OES     |
| **Iron, | * |                  | three results     | instrumentation   |
| Whole   | S |                  | outside of 6      | has the ability   |
| Water   | i |                  | f-pseudosigma     | to monitor        |
| Recover | n |                  | from the MPV was  | elemental         |
| able**] | c |                  | due to a sample   | concentration     |
| (http:/ | e |                  | login mixup. The  | during the rinse. |
| /bqs.us | A |                  | sample has been   | To prevent        |
| gs.gov/ | u |                  | relogged and is   | carryover in the  |
| bsp/QAD | g |                  | pending analysis. | future, the       |
| ATA_all | u |                  | The other two     | software will be  |
| /NOV03N | s |                  | outliers were due | set to monitor Fe |
| WQL0104 | t |                  | to carryover      | concentrations    |
| 5C.gif) | 2 |                  | where the         | greater than 250  |
|         | 0 |                  | previous samples  | ug/L and increase |
| **ICP   | 0 |                  | had Fe            | the rinse time if |
| labcode | 3 |                  | concentrations    | necessary. In     |
| 2359    | , |                  | greater than      | addition to       |
| p       | t |                  | 20,000 ug/L.**    | in                |
| armcode | h |                  |                   | strument/software |
| 1045C** | e |                  |                   | corrections,      |
|         | d |                  |                   | analyst and       |
|         | a |                  |                   | reviewers will be |
|         | t |                  |                   | instructed to     |
|         | a |                  |                   | watch for         |
|         | i |                  |                   | carryover when    |
|         | n |                  |                   | performing the    |
|         | d |                  |                   | secondary data    |
|         | i |                  |                   | review.** **The   |
|         | c |                  |                   | data packets will |
|         | a |                  |                   | also be rechecked |
|         | t |                  |                   | to look for any   |
|         | e |                  |                   | other samples the |
|         | h |                  |                   | may have been     |
|         | i |                  |                   | affected by       |
|         | g |                  |                   | carryover and if  |
|         | h |                  |                   | necessary samples |
|         | v |                  |                   | will be rerun and |
|         | a |                  |                   | updated.**        |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
|         | y |                  |                   |                   |
|         | . |                  |                   |                   |
|         | T |                  |                   |                   |
|         | h |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | e |                  |                   |                   |
|         | o |                  |                   |                   |
|         | f |                  |                   |                   |
|         | 1 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | v |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | u |                  |                   |                   |
|         | e |                  |                   |                   |
|         | s |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 3 |                  |                   |                   |
|         | % |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | g |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | 6 |                  |                   |                   |
|         | f |                  |                   |                   |
|         | - |                  |                   |                   |
|         | p |                  |                   |                   |
|         | s |                  |                   |                   |
|         | e |                  |                   |                   |
|         | u |                  |                   |                   |
|         | d |                  |                   |                   |
|         | o |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | g |                  |                   |                   |
|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | f |                  |                   |                   |
|         | r |                  |                   |                   |
|         | o |                  |                   |                   |
|         | m |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

###### 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** |   |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**Phos |   | **From May       | **The bias for    | **New stock       |
| phorus, |   | through October  | this parameter    | solutions were    |
| F       |   | 2003, a negative | and the total     | made on           |
| iltered |   | bias is          | phosphorus, which | 10/2/2003. All    |
| **](htt |   | demonstrated     | is run at the     | tubing has been   |
| p://bqs |   | (-9.8%). The     | same time, seems  | changed and all   |
| .usgs.g |   | same pattern is  | to be worse for   | annual            |
| ov/bsp/ |   | shown for        | low level samples | maintenance was   |
| QADATA_ |   | phosphorus,      | than for high     | performed ahead   |
| all/NOV |   | whole-water      | level. The        | of schedule.      |
| 03OWQRL |   | recoverable.**   | average bias for  | Preliminary       |
| 00666D. |   |                  | all blind samples | results have      |
| gif)**\ |   | **The NWQL is    | above 0.1 mg/L is | shown that this   |
| Colorim |   | not showing this | -3.1% for total   | might have helped |
| etric** |   | bias.**          | and dissolved     | eliminate the     |
|         |   |                  | phosphorus. The   | bias. We will     |
| labcode |   |                  | bias in the lower | also be checking  |
| 1983    |   |                  | part of the       | calibration       |
| p       |   |                  | calibration is    | procedures.**     |
| armcode |   |                  | also evident in   |                   |
| 0666D   |   |                  | our internal      |                   |
|         |   |                  | control charts.** |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| phos    |   |                  |                   |                   |
| phorus, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1983,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0666D*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| 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 |   | **From June      | **See comment for | **See comment for |
| phorus, |   | through October  | Phosphorus,       | Phosphorus,       |
| Whol    |   | 2003, a negative | Filtered (labcode | Filtered (labcode |
| e-Water |   | bias is          | 1983, parmcode    | 1983, parmcode    |
| Reco    |   | demonstrated     | 0666D).**         | 0666D).**         |
| verable |   | (-10.8%). The    |                   |                   |
| **](htt |   | same pattern is  |                   |                   |
| p://bqs |   | shown for        |                   |                   |
| .usgs.g |   | phosphorus,      |                   |                   |
| ov/bsp/ |   | filtered.**      |                   |                   |
| QADATA_ |   |                  |                   |                   |
| all/NOV |   | **The NWQL is    |                   |                   |
| 03OWQRL |   | not showing this |                   |                   |
| 00665D. |   | bias.**          |                   |                   |
| gif)**\ |   |                  |                   |                   |
| Colorim |   |                  |                   |                   |
| etric** |   |                  |                   |                   |
|         |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1984    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0665D   |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| >       |   | **From May       | **See comment for | **See comment for |
| [**Phos |   | through October  | Phosphorus,       | Phosphorus,       |
| phorus, |   | 2003, a negative | Filtered (labcode | Filtered (labcode |
| > Whol  |   | bias is          | 1983, parmcode    | 1983, parmcode    |
| e-Water |   | demonstrated     | 0666D).**         | 0666D).**         |
| > Recov |   | (-10.2%). The    |                   |                   |
| erable, |   | same pattern is  |                   |                   |
| > EPA   |   | shown for        |                   |                   |
| **](htt |   | phosphorus,      |                   |                   |
| p://bqs |   | filtered.**      |                   |                   |
| .usgs.g |   |                  |                   |                   |
| ov/bsp/ |   | **The NWQL is    |                   |                   |
| QADATA_ |   | not showing this |                   |                   |
| all/NOV |   | bias.**          |                   |                   |
| 03OWQRL |   |                  |                   |                   |
| 00665E. |   |                  |                   |                   |
| gif)**\ |   |                  |                   |                   |
| >       |   |                  |                   |                   |
| Colorim |   |                  |                   |                   |
| etric** |   |                  |                   |                   |
| >       |   |                  |                   |                   |
| >       |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| > 1993  |   |                  |                   |                   |
| > p     |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| > 0665E |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Trace |   | **Problem**      | **OWQRL**         | **Corrective**    |
| Metal   |   |                  |                   |                   |
| De      |   |                  | **Lab Comment**   | **Action**        |
| termina |   |                  |                   |                   |
| tions** |   |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**A    |   | High variability | **Due to factors  | **The cost        |
| rsenic, |   | is still         | beyond our        | reduction         |
| Whol    |   | demonstrated.    | control and the   | policies have     |
| e-Water |   | Three of the     | uncertainty of    | been discontinued |
| Reco    |   | last seven       | this facility's   | for FY04. Samples |
| verable |   | values received  | continued         | will be retested  |
| **](htt |   | (43%) are        | existence,        | to see if any     |
| p://bqs |   | outside of +/-2  | certain cost      | biases are        |
| .usgs.g |   | SD.              | reduction         | detected.**       |
| ov/bsp/ |   |                  | policies were     |                   |
| QADATA_ |   |                  | initiated in      |                   |
| all/NOV |   |                  | April, 2003. This |                   |
| 03OWQRL |   |                  | may have led to   |                   |
| 010021. |   |                  | undetected        |                   |
| gif)**\ |   |                  | instrument        |                   |
| GFAA    |   |                  | deficiencies over |                   |
| labcode |   |                  | time in the trace |                   |
| 3119    |   |                  | metals section.** |                   |
| 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    |   | 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              |
|         |   | SD with 3 of 19  |                   | multi-element     |
|         |   | (16%) outside of |                   | mode to help      |
|         |   | +/-3 SD.         |                   | increase          |
|         |   |                  |                   | sensitivity and   |
|         |   |                  |                   | 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  |                   |                   |
|         |   | SD with 3 of 13  |                   |                   |
|         |   | (23%) outside of |                   |                   |
|         |   | +/-3 SD.         |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| 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.        |
|         |   | SD.              |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| 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    |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Ch   |   | **The three most | **See comment for | **See comment for |
| romium, |   | recent values    | Arsenic, WWR      | Arsenic, WWR      |
| F       |   | are all outside  | (labcode 3119,    | (labcode 3119,    |
| iltered |   | +/-2 SD          | parmcode          | parmcode          |
| **](htt |   | indicating high  | 1002\[1\]).**     | 1002\[1\]).**     |
| p://bqs |   | variability.     |                   |                   |
| .usgs.g |   | These values are |                   |                   |
| ov/bsp/ |   | all from the     |                   |                   |
| QADATA_ |   | same reference   |                   |                   |
| all/NOV |   | material which   |                   |                   |
| 03OWQRL |   | is used for      |                   |                   |
| 01030I. |   | chromium,        |                   |                   |
| gif)**\ |   | whole-water      |                   |                   |
| GFAA**  |   | recoverable      |                   |                   |
|         |   | (OWQRL and NWQL) |                   |                   |
| labcode |   | and chromium,    |                   |                   |
| 1936    |   | filtered (NWQL)  |                   |                   |
| p       |   | with no apparent |                   |                   |
| armcode |   | problems.**      |                   |                   |
| 1030(I) |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Se   |   | **The            | **See comment for | **See comment for |
| lenium, |   | variability has  | Arsenic, WWR      | Arsenic, WWR      |
| Whol    |   | recently         | (labcode 3119,    | (labcode 3119,    |
| e-Water |   | increased. Two   | parmcode          | parmcode          |
| Reco    |   | of the last six  | 1002\[1\]).**     | 1002\[1\]).**     |
| verable |   | values received  |                   |                   |
| **](htt |   | (33%) are        |                   |                   |
| p://bqs |   | outside of +/-2  |                   |                   |
| .usgs.g |   | SD.\             |                   |                   |
| ov/bsp/ |   | **               |                   |                   |
| QADATA_ |   |                  |                   |                   |
| all/NOV |   |                  |                   |                   |
| 03OWQRL |   |                  |                   |                   |
| 011470. |   |                  |                   |                   |
| gif)**\ |   |                  |                   |                   |
| GFAA**  |   |                  |                   |                   |
|         |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 3124    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1147(0) |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Major | * |                  | **OWQRL**         | **Corrective**    |
| De      | * |                  |                   |                   |
| termina | P |                  | **Lab Comment**   | **Action**        |
| tions** | r |                  |                   |                   |
|         | o |                  |                   |                   |
|         | b |                  |                   |                   |
|         | l |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+=========+===+==================+===================+===================+
| [**Alka | * |                  | **A new analyst   | **After the bias  |
| linity, | * |                  | was being trained | was detected, the |
| Whol    | L |                  | in July. The      | analyst was       |
| e-Water | o |                  | protocol for      | retrained. No low |
| Reco    | w |                  | setting the       | level blind       |
| verable | e |                  | titrator speed    | samples for       |
| **](htt | r |                  | was not explained | alkalinity have   |
| p://bqs | - |                  | properly at       | been received     |
| .usgs.g | l |                  | first, leading to | since the end of  |
| ov/bsp/ | e |                  | the bias shown on | July.**           |
| QADATA_ | v |                  | the chart for     |                   |
| all/NOV | e |                  | July for the low  |                   |
| 03OWQRL | l |                  | level samples.**  |                   |
| 90410A. | r |                  |                   |                   |
| gif)**\ | e |                  |                   |                   |
| Titr    | f |                  |                   |                   |
| imetric | e |                  |                   |                   |
| labcode | r |                  |                   |                   |
| 0070    | e |                  |                   |                   |
| p       | n |                  |                   |                   |
| armcode | c |                  |                   |                   |
| 9       | e |                  |                   |                   |
| 0410A** | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | ) |                  |                   |                   |
|         | w |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [**Alka | * |                  | **See above       | **See above       |
| linity, | * |                  | comment for       | comment for       |
| F       | L |                  | Alkalinity, WWR   | Alkalinity, WWR   |
| iltered | o |                  | (labcode 0070,    | (labcode 0070,    |
| **](htt | w |                  | parmcode          | parmcode          |
| p://bqs | e |                  | 90410A).**        | 90410A).**        |
| .usgs.g | r |                  |                   |                   |
| ov/bsp/ | - |                  |                   |                   |
| QADATA_ | l |                  |                   |                   |
| all/NOV | e |                  |                   |                   |
| 03OWQRL | v |                  |                   |                   |
| 298010. | e |                  |                   |                   |
| gif)**\ | l |                  |                   |                   |
| Titr    | r |                  |                   |                   |
| imetric | e |                  |                   |                   |
| labcode | f |                  |                   |                   |
| 3160    | e |                  |                   |                   |
| p       | r |                  |                   |                   |
| armcode | e |                  |                   |                   |
| 298     | n |                  |                   |                   |
| 01(0)** | c |                  |                   |                   |
|         | e |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+