##### QADATA Summary -- August 2005

The Inorganic Blind Sample Project (IBSP) of the Branch of Quality
Systems reviews about 110 inorganic analytical lines at the National
Water Quality Laboratory (NWQL) using double-blind, quality-control
samples. A summary of this review, the QADATA Summary, is a short report
commenting on only those analytical lines for which the quality-control
charts indicate or have indicated a bias and/or higher than expected
variability. Overall, the vast majority of the inorganic methods at the
NWQL demonstrate acceptable variability and little or no bias.

The data reviewed in this summary is for the time period 01/01/05
through 08/04/05; however, longer-range charts are used when they add
clarity to the problem. The attached quality-control charts contain data
from samples that have been subject to the same laboratory handling
procedures as the samples submitted by the USGS district offices, and
the data have the same level of quality-control review as the data
released to the districts. Therefore, any factors that affect the data
displayed on the IBSP quality-control charts should also affect the
districts' data in a similar manner. Data from samples known to have
been affected by a problem independent of the laboratory are not
displayed on the charts.

In this report, the "Problem" is determined and written by IBSP and then
sent to the NWQL. The NWQL then gets two weeks to respond to the issue
by writing a "Lab Comment" and a "Corrective Action." Comments from the
lab are incorporated into the QADATA Summary as received. The most
recent comments and responses are in bold followed by comments and
responses from previous QADATA Summaries. Approximately one month after
the QADATA Summary is distributed, the NWQL and IBSP personnel meet to
follow-up on corrective actions and their impact on new data.

Current charts (updated twice weekly) may be accessed at
<http://bqs.usgs.gov/bsp/FY05charts.htm>. Laboratory and district
personnel can also make their own custom QADATA retrieval to parallel
their objectives by using the QADATA Application online at
[http://bqs.usgs.gov/bsp](http://bqs.usgs.gov/bsp/mainpage.html) (select
QADATA Application button). Charts pertaining specifically to this
report can be accessed electronically by following the underlined
hyperlinks embedded within the report and associated with each analysis
discussed.

Historical QADATA Summaries may be accessed at
<http://bqs.usgs.gov/bsp/QAData.htm>.

*Tedmund M. Struzeski*

<struzesk@usgs.gov>

Table of Contents

Report Highlights Page

[One-Page Summary](#Highlights) 3

Detailed Description by Analyte

Nutrients

[Phosphorus, Whole-Water Recoverable,](#nwql2333) Colorimetry, Labcode
2333, Parmcode 0665G 4

Trace Metals

[Barium, Whole-Water Recoverable,](#nwql2374) ICP-MS, Labcode 2374,
Parmcode 1007D 5

[Cadmium, Filtered,](#nwql1788) ICP-MS, Labcode 1788, Parmcode 1025G 5

[Copper, Whole-Water Recoverable,](#nwql1559) GFAA, Labcode 1559,
Parmcode 1042F 6

[Copper, Whole-Water Recoverable,](#nwql2379) ICP-MS, Labcode 2379,
Parmcode 1042H 7

[Mercury, Filtered,](#nwql2707) CVAF, Labcode 2707, Parmcode 71890C 7

Majors

[Fluoride, Filtered,](#nwql0031) ISE, Labcode 0031, Parmcode 0950B 8

> []{#Highlights .anchor}**Report Highlights**

######### Note: Click the underlined text to access the control chart associated with the comment.

1.  [Copper](http://bqs.usgs.gov/bsp/QADATA_all/05AUG/AUG05NWQL01042F.gif)
    by GFAA, whole-water recoverable, parmcode 1042F -- No longer
    monitored by BQS due to low demand.

2.  [Copper](http://bqs.usgs.gov/bsp/QADATA_all/05AUG/AUG05NWQL01042H.gif)
    by ICP-MS, whole-water recoverable, parmcode 1042H -- Positive bias
    starting around mid-November 2004.

3.  [Fluoride](http://bqs.usgs.gov/bsp/QADATA_all/05AUG/AUG05NWQL00950B.gif)
    by ISE, filtered, parmcode 0950B -- Positive bias starting
    mid-November 2004.

4.  [Mercury](http://bqs.usgs.gov/bsp/QADATA_all/05AUG/AUG05NWQL71890C.gif)
    by CVAA, filtered, parmcode 71890C -- Negative bias throughout June
    2005 and part of July.

NWQL PERFORMANCE ON IBSP SAMPLES

######### **Note: Click the underlined text in the left-hand column to access the control chart for the associated comment.**

+---------+---+------------------+-------------------+-------------------+
| **N     |   | **Problem**      | **NWQL**          | **Corrective**    |
| utrient |   |                  |                   |                   |
| De      |   |                  | **Lab Comment**   | **Action**        |
| termina |   |                  |                   |                   |
| tions** |   |                  |                   |                   |
+=========+===+==================+===================+===================+
| [[]{#n  |   | **Corrective     |                   |                   |
| wql2333 |   | actions taken by |                   |                   |
| .anchor |   | the NWQL appear  |                   |                   |
| }**Phos |   | to have          |                   |                   |
| phorus, |   | corrected the    |                   |                   |
| Whol    |   | bias. Results    |                   |                   |
| e-Water |   | received since   |                   |                   |
| Recove  |   | May 18 show      |                   |                   |
| rable** |   | little bias and  |                   |                   |
| ](http: |   | little           |                   |                   |
| //bqs.u |   | variability.**   |                   |                   |
| sgs.gov |   |                  |                   |                   |
| /bsp/QA |   | **No corrective  |                   |                   |
| DATA_al |   | action           |                   |                   |
| l/05AUG |   | necessary.**     |                   |                   |
| /AUG05N |   |                  |                   |                   |
| WQL0066 |   |                  |                   |                   |
| 5G.gif) |   |                  |                   |                   |
| **Lo    |   |                  |                   |                   |
| w-level |   |                  |                   |                   |
| Colo    |   |                  |                   |                   |
| rimetry |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 2333    |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0665G** |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| phos    |   |                  |                   |                   |
| phorus, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| low     |   |                  |                   |                   |
| -level, |   |                  |                   |                   |
| color   |   |                  |                   |                   |
| imetry, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 2333,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0665G*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | Working standards | Since the         |
|         | l |                  | prepared and put  | preparation of    |
| >       | l |                  | online April 4th  | new standards,    |
|  QADATA | r |                  | appear to have    | the bias seems to |
| >       | e |                  | been prepared     | have improved. We |
| Summary | s |                  | from a degrading  | will continue to  |
| >       | u |                  | stock. After high | closely monitor   |
| > June  | l |                  | bias was noted by | the line.         |
| > 2005  | t |                  | analyst, a new    |                   |
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|         | r |                  | was ordered. New  |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Trace | * |                  | **NWQL**          | **Corrective**    |
| Metal   | * |                  |                   |                   |
| De      | P |                  | **Comment**       | **Action**        |
| termina | r |                  |                   |                   |
| tions** | o |                  |                   |                   |
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+=========+===+==================+===================+===================+
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| wql2374 | * |                  |                   |                   |
| .an     | R |                  |                   |                   |
| chor}** | e |                  |                   |                   |
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| Whol    | u |                  |                   |                   |
| e-Water | l |                  |                   |                   |
| Recove  | t |                  |                   |                   |
| rable** | s |                  |                   |                   |
| ](http: | f |                  |                   |                   |
| //bqs.u | o |                  |                   |                   |
| sgs.gov | r |                  |                   |                   |
| /bsp/QA | s |                  |                   |                   |
| DATA_al | a |                  |                   |                   |
| l/05AUG | m |                  |                   |                   |
| /AUG05N | p |                  |                   |                   |
| WQL0100 | l |                  |                   |                   |
| 7D.gif) | e |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [[]{#n  | * |                  |                   |                   |
| wql1788 | * |                  |                   |                   |
| .anc    | R |                  |                   |                   |
| hor}**C | e |                  |                   |                   |
| admium, | s |                  |                   |                   |
| Fil     | u |                  |                   |                   |
| tered** | l |                  |                   |                   |
| ](http: | t |                  |                   |                   |
| //bqs.u | s |                  |                   |                   |
| sgs.gov | f |                  |                   |                   |
| /bsp/QA | r |                  |                   |                   |
| DATA_al | o |                  |                   |                   |
| l/05AUG | m |                  |                   |                   |
| /AUG05N | s |                  |                   |                   |
| WQL0102 | a |                  |                   |                   |
| 5G.gif) | m |                  |                   |                   |
| *       | p |                  |                   |                   |
| *ICP-MS | l |                  |                   |                   |
| labcode | e |                  |                   |                   |
| 1788    | s |                  |                   |                   |
| p       | a |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | A |                  |                   |                   |
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|         | d |                  |                   |                   |
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|         | l |                  |                   |                   |
|         | o |                  |                   |                   |
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|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
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|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
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|         | h |                  |                   |                   |
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|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | x |                  |                   |                   |
|         | t |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | A |                  |                   |                   |
|         | D |                  |                   |                   |
|         | A |                  |                   |                   |
|         | T |                  |                   |                   |
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|         | u |                  |                   |                   |
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|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | y |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | d |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | r |                  |                   |                   |
|         | i |                  |                   |                   |
|         | b |                  |                   |                   |
|         | u |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| admium, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| ICP-MS, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1788,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1025G*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | D |                  | Online QC charts  | We have no        |
|         | a |                  | do not indicate a | explanation for   |
| >       | t |                  | bias. The         | the bias observed |
|  QADATA | a |                  | calibration       | in the BQS        |
| >       | i |                  | standards were    | charts. We will   |
| Summary | n |                  | run by ICP with a | work with BQS to  |
| > June  | d |                  | percent           | identify the      |
| > 2005  | i |                  | difference of 2%  | cause of the      |
|         | c |                  | or less. SRS T145 | bias.             |
|         | a |                  | was run with a    |                   |
|         | t |                  | result of 9.8ug/L |                   |
|         | e |                  | (limits are 8.51  |                   |
|         | a |                  | -- 10.15 ug/L). A |                   |
|         | p |                  | NIST standard was |                   |
|         | o |                  | run with a value  |                   |
|         | s |                  | of 20.18 ug/L     |                   |
|         | i |                  | (Theoretical      |                   |
|         | t |                  | value= 20 ug/L).  |                   |
|         | i |                  |                   |                   |
|         | v |                  |                   |                   |
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|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [[]{#n  | * |                  | **GFAA analyses   | []{.mark}         |
| wql1559 | * |                  | will be replaced  |                   |
| .an     | D |                  | by ICP-MS methods |                   |
| chor}** | u |                  | as of October 1,  |                   |
| Copper, | e |                  | 2005**            |                   |
| Whol    | t |                  |                   |                   |
| e-Water | o |                  |                   |                   |
| Recove  | t |                  |                   |                   |
| rable** | h |                  |                   |                   |
| ](http: | e |                  |                   |                   |
| //bqs.u | l |                  |                   |                   |
| sgs.gov | o |                  |                   |                   |
| /bsp/QA | w |                  |                   |                   |
| DATA_al | n |                  |                   |                   |
| l/05AUG | u |                  |                   |                   |
| /AUG05N | m |                  |                   |                   |
| WQL0104 | b |                  |                   |                   |
| 2F.gif) | e |                  |                   |                   |
| **\     | r |                  |                   |                   |
| GFAA    | o |                  |                   |                   |
| labcode | f |                  |                   |                   |
| 1559    | d |                  |                   |                   |
| p       | i |                  |                   |                   |
| armcode | s |                  |                   |                   |
| 1042F** | t |                  |                   |                   |
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+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| copper, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| GFAA,   |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 1559,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1042F*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | There have been   | We will continue  |
|         | p |                  | several service   | to monitor        |
| >       | o |                  | calls made on the | performance and   |
|  QADATA | s |                  | GFAA instrument   | work with BQS to  |
| >       | i |                  | since the         | identify the      |
| Summary | t |                  | beginning of the  | cause of the      |
| > June  | i |                  | year. The furnace | bias.             |
| > 2005  | v |                  | has been serviced |                   |
|         | e |                  | and is planned to |                   |
|         | b |                  | be replaced when  |                   |
|         | i |                  | the part arrives  |                   |
|         | a |                  | within the next 2 |                   |
|         | s |                  | weeks. The        |                   |
|         | i |                  | temperature       |                   |
|         | s |                  | program for the   |                   |
|         | s |                  | furnace have been |                   |
|         | t |                  | reviewed and      |                   |
|         | i |                  | optimized.        |                   |
|         | l |                  |                   |                   |
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|         | t |                  |                   |                   |
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|         | t |                  |                   |                   |
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|         | a |                  |                   |                   |
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|         | . |                  |                   |                   |
|         |   |                  |                   |                   |
|         | T |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | i |                  |                   |                   |
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|         | t |                  |                   |                   |
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|         | r |                  |                   |                   |
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|         | l |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | d |                  |                   |                   |
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|         | I |                  |                   |                   |
|         | C |                  |                   |                   |
|         | P |                  |                   |                   |
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|         | M |                  |                   |                   |
|         | S |                  |                   |                   |
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|         | 1 |                  |                   |                   |
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|         | 9 |                  |                   |                   |
|         | 1 |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | R |                  | The slight bias   | We have no        |
|         | e |                  | on internal QC    | explanation for   |
| >       | s |                  | charts described  | the continued     |
|  QADATA | u |                  | in the last       | bias and          |
| >       | l |                  | summary has       | variability, and  |
| Summary | t |                  | lessened since    | will continue to  |
| > April | s |                  | mid-January 2005. | work with BQS to  |
| > 2005  | r |                  | The in-bottle     | resolve the bias  |
|         | e |                  | digestion spike   | and variability.  |
|         | c |                  | charts show no    |                   |
|         | e |                  | bias or changes   |                   |
|         | i |                  | in variability    |                   |
|         | v |                  | from October 2004 |                   |
|         | e |                  | to present. The   |                   |
|         | d |                  | QC for the runs   |                   |
|         | s |                  | with the outlier  |                   |
|         | i |                  | BQS samples was   |                   |
|         | n |                  | acceptable. There |                   |
|         | c |                  | were no carryover |                   |
|         | e |                  | problems or       |                   |
|         | t |                  | sample mispours.  |                   |
|         | h |                  |                   |                   |
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|         | a |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | A |                  | NWQL QC charts    | We will work with |
|         | p |                  | continue to show  | BQS to resolve    |
| >       | o |                  | slight positive   | the bias issue.   |
|  QADATA | s |                  | bias, but within  |                   |
| >       | i |                  | acceptance        |                   |
| Summary | t |                  | criteria since    |                   |
| > F     | i |                  | standards were    |                   |
| ebruary | v |                  | prepared          |                   |
| > 2005  | e |                  | September 27,     |                   |
|         | b |                  | 2004.             |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
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|         | h |                  |                   |                   |
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|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
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|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | D |                  | NWQL QC charts    | NWQL will         |
|         | a |                  | from May to       | continue to       |
| >       | t |                  | September show a  | closely monitor   |
|  QADATA | a |                  | positive bias of  | analysis for a    |
| >       | s |                  | about 5%. New     | bias.             |
| Summary | h |                  | standards were    |                   |
| > N     | o |                  | prepared and      |                   |
| ovember | w |                  | verified on       |                   |
| > 2004  | a |                  | September 27th,   |                   |
|         | p |                  | 2004. The current |                   |
|         | o |                  | bias is \<1%.     |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | % |                  |                   |                   |
|         | ) |                  |                   |                   |
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|         | M |                  |                   |                   |
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|         | V |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [[]{#n  | * |                  | **The NWQL has    | **NWQL will       |
| wql2379 | * |                  | reviewed the      | continue to       |
| .an     | A |                  | digestion process | analyze this      |
| chor}** | p |                  | by running        | bias.**           |
| Copper, | o |                  | blanks, but these |                   |
| Whol    | s |                  | show no           |                   |
| e-Water | i |                  | contamination.    |                   |
| Re      | t |                  | The same stock    |                   |
| coverab | i |                  | solutions are     |                   |
| le**](h | v |                  | used to make the  |                   |
| ttp://b | e |                  | calibration       |                   |
| qs.usgs | b |                  | standards for     |                   |
| .gov/bs | i |                  | filtered and      |                   |
| p/QADAT | a |                  | whole-water       |                   |
| A_all/0 | s |                  | recoverable       |                   |
| 5AUG/AU | i |                  | samples, but only |                   |
| G05NWQL | s |                  | the results for   |                   |
| 01042H. | s |                  | filtered samples  |                   |
| gif)**\ | t |                  | show no bias. New |                   |
| ICP-MS  | i |                  | acid has been     |                   |
| labcode | l |                  | used with no      |                   |
| 2379    | l |                  | change in         |                   |
| p       | d |                  | results.**        |                   |
| armcode | e |                  |                   |                   |
| 1042H** | m |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
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|         | t |                  |                   |                   |
|         | s |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | o |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | l |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | i |                  |                   |                   |
|         | g |                  |                   |                   |
|         | h |                  |                   |                   |
|         | t |                  |                   |                   |
|         | m |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | s |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | h |                  |                   |                   |
|         | i |                  |                   |                   |
|         | g |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | g |                  |                   |                   |
|         | e |                  |                   |                   |
|         | t |                  |                   |                   |
|         | v |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | u |                  |                   |                   |
|         | e |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         |   |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
|         | T |                  |                   |                   |
|         | h |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | v |                  |                   |                   |
|         | i |                  |                   |                   |
|         | d |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | f |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | f |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | p |                  |                   |                   |
|         | p |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | b |                  |                   |                   |
|         | y |                  |                   |                   |
|         | I |                  |                   |                   |
|         | C |                  |                   |                   |
|         | P |                  |                   |                   |
|         | - |                  |                   |                   |
|         | M |                  |                   |                   |
|         | S |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | l |                  |                   |                   |
|         | c |                  |                   |                   |
|         | 1 |                  |                   |                   |
|         | 7 |                  |                   |                   |
|         | 9 |                  |                   |                   |
|         | 1 |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | . |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| copper, |   |                  |                   |                   |
| whol    |   |                  |                   |                   |
| e-water |   |                  |                   |                   |
| recov   |   |                  |                   |                   |
| erable, |   |                  |                   |                   |
| ICP-MS, |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 2379,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 1042H*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | D |                  | An NIST standard  | We continue to    |
|         | a |                  | analyzed using    | have no           |
| >       | t |                  | the previous      | explanation of    |
|  QADATA | a |                  | calibration       | the bias. We will |
| >       | s |                  | standards was     | continue to       |
| Summary | t |                  | 263.9 ug/L with a | monitor.          |
| > June  | i |                  | theoretical value |                   |
| > 2005  | l |                  | of 262.3 ug/L.    |                   |
|         | l |                  | After preparing   |                   |
|         | d |                  | new standards the |                   |
|         | e |                  | NIST standard was |                   |
|         | m |                  | 265.4 ug/L        |                   |
|         | o |                  | showing a percent |                   |
|         | n |                  | difference of     |                   |
|         | s |                  | 1.2%. As          |                   |
|         | t |                  | discussed at the  |                   |
|         | r |                  | QA meeting,       |                   |
|         | a |                  | digested and      |                   |
|         | t |                  | undigested spike  |                   |
|         | e |                  | standards were    |                   |
|         | a |                  | analyzed. The     |                   |
|         | p |                  | results for the   |                   |
|         | o |                  | digested spike    |                   |
|         | s |                  | are: 52.395 ug/L  |                   |
|         | i |                  | (expected value   |                   |
|         | t |                  | 50 ug/L) giving a |                   |
|         | i |                  | 4.8% percent      |                   |
|         | v |                  | difference. The   |                   |
|         | e |                  | results for the   |                   |
|         | b |                  | undigested spike  |                   |
|         | i |                  | are: 52.78 ug/L   |                   |
|         | a |                  | (expected value   |                   |
|         | s |                  | 50 ug/L) giving a |                   |
|         | . |                  | 5.4 percent       |                   |
|         | A |                  | difference.       |                   |
|         | b |                  |                   |                   |
|         | i |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | o |                  |                   |                   |
|         | f |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | m |                  |                   |                   |
|         | a |                  |                   |                   |
|         | g |                  |                   |                   |
|         | n |                  |                   |                   |
|         | i |                  |                   |                   |
|         | t |                  |                   |                   |
|         | u |                  |                   |                   |
|         | d |                  |                   |                   |
|         | e |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | n |                  |                   |                   |
|         | o |                  |                   |                   |
|         | t |                  |                   |                   |
|         | d |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | o |                  |                   |                   |
|         | n |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | r |                  |                   |                   |
|         | a |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | f |                  |                   |                   |
|         | o |                  |                   |                   |
|         | r |                  |                   |                   |
|         | f |                  |                   |                   |
|         | i |                  |                   |                   |
|         | l |                  |                   |                   |
|         | t |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | c |                  |                   |                   |
|         | o |                  |                   |                   |
|         | p |                  |                   |                   |
|         | p |                  |                   |                   |
|         | e |                  |                   |                   |
|         | r |                  |                   |                   |
|         | b |                  |                   |                   |
|         | y |                  |                   |                   |
|         | I |                  |                   |                   |
|         | C |                  |                   |                   |
|         | P |                  |                   |                   |
|         | - |                  |                   |                   |
|         | M |                  |                   |                   |
|         | S |                  |                   |                   |
|         | ( |                  |                   |                   |
|         | l |                  |                   |                   |
|         | c |                  |                   |                   |
|         | 1 |                  |                   |                   |
|         | 7 |                  |                   |                   |
|         | 9 |                  |                   |                   |
|         | 1 |                  |                   |                   |
|         | ) |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | R |                  | As discussed at a | We have no        |
|         | e |                  | meeting with BQS, | explanation for   |
| >       | s |                  | the internal      | the continued     |
|  QADATA | u |                  | charts have shown | bias and suggest  |
| >       | l |                  | no bias and no    | further work with |
| Summary | t |                  | changes in        | BQS to ascertain  |
| > April | s |                  | variability in    | the cause of      |
| > 2005  | r |                  | performance going | bias.             |
|         | e |                  | back to October   |                   |
|         | c |                  | 2003.             |                   |
|         | e |                  |                   |                   |
|         | i |                  | []{.mark}         |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | d |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | c |                  |                   |                   |
|         | e |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | e |                  |                   |                   |
|         | l |                  |                   |                   |
|         | a |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | A |                  |                   |                   |
|         | D |                  |                   |                   |
|         | A |                  |                   |                   |
|         | T |                  |                   |                   |
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|         | S |                  |                   |                   |
|         | u |                  |                   |                   |
|         | m |                  |                   |                   |
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|         | a |                  |                   |                   |
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|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | t |                  |                   |                   |
|         | h |                  |                   |                   |
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|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | D |                  | The NWQL QC       | The NWQL will     |
|         | a |                  | charts do not     | review and        |
| >       | t |                  | show an upward    | compare internal  |
|  QADATA | a |                  | trend.            | QC information    |
| >       | e |                  |                   | with BQS in one   |
| Summary | x |                  |                   | month. The NWQL   |
| > F     | h |                  |                   | will work with    |
| ebruary | i |                  |                   | BQS if the trend  |
| > 2005  | b |                  |                   | continues.        |
|         | i |                  |                   | []{.mark}         |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | n |                  |                   |                   |
|         | u |                  |                   |                   |
|         | p |                  |                   |                   |
|         | w |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | d |                  |                   |                   |
|         | t |                  |                   |                   |
|         | r |                  |                   |                   |
|         | e |                  |                   |                   |
|         | n |                  |                   |                   |
|         | d |                  |                   |                   |
|         | s |                  |                   |                   |
|         | t |                  |                   |                   |
|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | t |                  |                   |                   |
|         | i |                  |                   |                   |
|         | n |                  |                   |                   |
|         | g |                  |                   |                   |
|         | m |                  |                   |                   |
|         | i |                  |                   |                   |
|         | d |                  |                   |                   |
|         | - |                  |                   |                   |
|         | N |                  |                   |                   |
|         | o |                  |                   |                   |
|         | v |                  |                   |                   |
|         | e |                  |                   |                   |
|         | m |                  |                   |                   |
|         | b |                  |                   |                   |
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|         | r |                  |                   |                   |
|         | 2 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 0 |                  |                   |                   |
|         | 4 |                  |                   |                   |
|         | . |                  |                   |                   |
|         |   |                  |                   |                   |
|         | A |                  |                   |                   |
|         | n |                  |                   |                   |
|         | a |                  |                   |                   |
|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
|         | s |                  |                   |                   |
|         | i |                  |                   |                   |
|         | s |                  |                   |                   |
|         | s |                  |                   |                   |
|         | h |                  |                   |                   |
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|         | l |                  |                   |                   |
|         | d |                  |                   |                   |
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|         | s |                  |                   |                   |
|         | e |                  |                   |                   |
|         | l |                  |                   |                   |
|         | y |                  |                   |                   |
|         | m |                  |                   |                   |
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|         | d |                  |                   |                   |
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|         | n |                  |                   |                   |
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|         | h |                  |                   |                   |
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|         | n |                  |                   |                   |
|         | e |                  |                   |                   |
|         | x |                  |                   |                   |
|         | t |                  |                   |                   |
|         | Q |                  |                   |                   |
|         | A |                  |                   |                   |
|         | D |                  |                   |                   |
|         | A |                  |                   |                   |
|         | T |                  |                   |                   |
|         | A |                  |                   |                   |
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|         | m |                  |                   |                   |
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|         | a |                  |                   |                   |
|         | r |                  |                   |                   |
|         | y |                  |                   |                   |
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|         | d |                  |                   |                   |
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|         | s |                  |                   |                   |
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|         | d |                  |                   |                   |
|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| []      |   |                  |                   |                   |
| {.mark} |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| [[]{#n  | * |                  |                   |                   |
| wql2707 | * |                  |                   |                   |
| .anc    | A |                  |                   |                   |
| hor}**M | n |                  |                   |                   |
| ercury, | e |                  |                   |                   |
| Fil     | g |                  |                   |                   |
| tered** | a |                  |                   |                   |
| ](http: | t |                  |                   |                   |
| //bqs.u | i |                  |                   |                   |
| sgs.gov | v |                  |                   |                   |
| /bsp/QA | e |                  |                   |                   |
| DATA_al | b |                  |                   |                   |
| l/05AUG | i |                  |                   |                   |
| /AUG05N | a |                  |                   |                   |
| WQL7189 | s |                  |                   |                   |
| 0C.gif) | i |                  |                   |                   |
| **CVAF  | s |                  |                   |                   |
| labcode | d |                  |                   |                   |
| 2707    | e |                  |                   |                   |
| p       | m |                  |                   |                   |
| armcode | o |                  |                   |                   |
| 7       | n |                  |                   |                   |
| 1890C** | s |                  |                   |                   |
|         | t |                  |                   |                   |
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|         | y |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

+---------+---+------------------+-------------------+-------------------+
| **Major | * |                  | **NWQL**          | **Corrective**    |
| De      | * |                  |                   |                   |
| termina | P |                  | **Comment**       | **Action**        |
| tions** | r |                  |                   |                   |
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|         | m |                  |                   |                   |
|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+=========+===+==================+===================+===================+
| [[]{#n  | * |                  | **We are          | **The line will   |
| wql0031 | * |                  | continuing to see | be monitored for  |
| .anch   | A |                  | if we can improve | improvement.**    |
| or}**Fl | l |                  | the line          |                   |
| uoride, | t |                  | performance.**    |                   |
| Fil     | h |                  |                   |                   |
| tered** | o |                  |                   |                   |
| ](http: | u |                  |                   |                   |
| //bqs.u | g |                  |                   |                   |
| sgs.gov | h |                  |                   |                   |
| /bsp/QA | a |                  |                   |                   |
| DATA_al | p |                  |                   |                   |
| l/05AUG | o |                  |                   |                   |
| /AUG05N | s |                  |                   |                   |
| WQL0095 | i |                  |                   |                   |
| 0B.gif) | t |                  |                   |                   |
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|         | * |                  |                   |                   |
|         | * |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| *P      |   |                  |                   |                   |
| revious |   |                  |                   |                   |
| c       |   |                  |                   |                   |
| omments |   |                  |                   |                   |
| for     |   |                  |                   |                   |
| fl      |   |                  |                   |                   |
| uoride, |   |                  |                   |                   |
| fi      |   |                  |                   |                   |
| ltered, |   |                  |                   |                   |
| ISE,    |   |                  |                   |                   |
| labcode |   |                  |                   |                   |
| 0031,   |   |                  |                   |                   |
| p       |   |                  |                   |                   |
| armcode |   |                  |                   |                   |
| 0950B*  |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | D |                  | New standards     | Continue          |
|         | a |                  | prepared early    | monitoring line   |
| >       | t |                  | May and new       | and discuss with  |
|  QADATA | a |                  | electrode         | BQS during next   |
| >       | s |                  | installed May 18. | meeting.          |
| Summary | t |                  | Only two data     |                   |
| > June  | i |                  | points on BQS     |                   |
| > 2005  | l |                  | charts since mid  |                   |
|         | l |                  | May.              |                   |
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|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
| From    | D |                  | The NWQL agrees   | We are ordering   |
|         | a |                  | with the          | new stock         |
| >       | t |                  | observation.      | standards and     |
|  QADATA | a |                  |                   | will prepare and  |
| >       | s |                  |                   | verify new        |
| Summary | i |                  |                   | working standards |
| > April | n |                  |                   | by April 29,      |
| > 2005  | c |                  |                   | 2005. We also     |
|         | e |                  |                   | ordered a new     |
|         | m |                  |                   | electrode to see  |
|         | i |                  |                   | if the current    |
|         | d |                  |                   | electrode is      |
|         | - |                  |                   | contributing to   |
|         | N |                  |                   | the bias.         |
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|         | . |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+
|         |   |                  |                   |                   |
+---------+---+------------------+-------------------+-------------------+

######