Coalition for Urban River Evaluation
1697 Cole Blvd., Ste 200, Golden, Colorado 80401 ● Ph: (303) 239-5411 ● Fax: (303) 239-5454
SP CURE Monitoring Committee Meeting
Tuesday, October 11, 2011 – 9:00 a.m.
Meeting Location: SACWSD
9702 Monaco Street, Henderson, Co 80640
Host: Stephen Ellis
(720) 206-0460
October Meeting Summary
1.
Discuss and Approve June Meeting Summary
June meeting minutes were discussed and approved without changes.
2.
Round Robin Report (Phil Russell)
Phil Russell summarized the results of the Round Robin. Constituents analyzed were Ammonia,
Selenium, and E.coli. A total of seven labs participated in the Round Robin; data have been received and
summarized for all participating labs except Metro Wastewater Reclamation District. All reporting labs
showed similar results for the ammonia samples (within +/-20%).
Much more variability was observed in the selenium results. For the lab sampels, 3 labs submitted
numerical data with the other 3 labs reporting values below their detection limit of 5 µg/L. For the
instream selenium sample, 2/3 of the labs were within 20% of each other. Only 1 lab was grossly
different. The question was asked whether all labs should adopt a method detection limit below 5µg/L, or
potentially 3 µg/L?
The E.coli wastewater sample contained unusually high levels of E.coli as the samples were taken prior to
chlorination. All reporting labs were within +/- 20% for the wastewater samples; E.coli river sample
values were all very close as well. Phil Russell conducted additional tests to investigate the impact of
hold times on E.coli results. Tests showed that a 3-day hold time had little impact on results.
3.
SAP/QAPP – Update Status
The SAP/QAPP is not up to date but a completion deadline has been set for February 14, 2012. Phil
Russel has agreed to take the lead on the completion effort. It was decided that sections requiring yearly
updates would be included in the form of an appendix. All SP CURE parties agreed to go through the site
list to confirm the accuracy of the information listed about their sites. In addition, a QA/QC Section needs
to be added to the SAP/QAPP.
4.
DSN 2010 Data Upload Status
All SP CURE members have submitted data but not all data are ready for final upload. Brown and
Caldwell reported the following status:
SACWSD – Waiting for Release Form
Aurora – Complete
DEH – Still working with DSN to resolve issues
Thornton – Complete
Littleton Englewood – Waiting for corrections
Centennial – Waiting for Release Form
5.
DSN Labeling Conventions
It has been suggested that all entities submit their DSN data using a standardized format in order to
preserve consistency within the database. It was agreed that Nitrogen would be reported as “N” and that
Phosphorous would be reported as “P”. In addition, it was agreed that the “Result Detection Condition”
field would be the used as the first means to qualify a sample if needed, with EPA qualifier flags only
being used for situations not covered by the “Result Detection Condition” field options.
 Brown and Caldwell will add the EPA Qualifier field to the 2011 DSN upload template.
6.
New Business
 Jon Novick mentioned that the State is currently looking into implementing a new water quality
database. The new database would likely require a new and different input format which may
lead to issues for some users.
 DEH has lost all of their temperature probes which include probes on Cherry Creek at Champa,
Upstream of the Cherry Creek Confluence, and Downstream of the Cherry Creek Confluence.
Denver Environmental Health has no intention of replacing any of the lost probes at this point.
7.
Next Meeting Dates
December 13, 2011 – L/E WWTP
February 14, 2012 – Aurora
April 10, 2012 – Centennial
Meeting summary was prepared by Sarah Reeves.
Approved by:
___________________________________
Christine Johnston, Secretary
____________________
Date Approved
SP CURE Monitoring Committee Meeting – October 11, 2011
Attendance Record
Present
X
X
X
Linda Boyle
Randy Giffin
Al Baker
Nick Tino
Organization
City of Aurora
City of Aurora
Centennial W&S District
Centennial W&S District
X
X
Jon Novick
Al Polonsky
Alan Searcy
Phil Russell
Jim Dorsch
Denver Environmental Health
Denver Environmental Health
City of Lakewood
Littleton/Englewood WWTP
Metro District
X
Steven Ellis
South Adams County W&S
X
Vic Lucero
Shay Shih
Christine Johnston
City of Thornton
City of Thornton
Xcel Energy
Sarah Reeves
Tony VanHaverbeke
Coordinator - Brown and Caldwell
Brown and Caldwell
X
X
Name