OHA Drinking Water Services
PWS ID: 94713 ---- COLUMBIA RIDGE LANDFILL/RECYCL
Excel Spreadsheet

MCL = 10 mg/L; MCL exceedances are indicated with red text.
ND = Not detected at the minimum reporting level.
Nitrate Samples
Sample ID Sample
Date		 Date
Received		 Analyte Name Source Name Source
ID		 Result
(mg/L)		 Comments
204071401-I 04/06/2022 05/06/2022 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.67
T2C160401-I 03/16/2022 03/18/2022 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.53
T1J140101-I 10/13/2021 10/19/2021 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.78
T0K190201-I 11/18/2020 12/09/2020 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.83
190318N4-I 03/18/2019 03/22/2019 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.32
180619B4 06/18/2018 07/05/2018 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A2.19
170504E1-I 05/04/2017 05/22/2017 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.8
160211K1B-I 02/11/2016 02/16/2016 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.88
150406J1B-I 04/06/2015 05/08/2015 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-AND
150406J2B-I 04/06/2015 05/08/2015 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-AND
409800802-I 04/07/2014 05/09/2014 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-AND
409800801-I 04/07/2014 05/09/2014 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.62
312700603-I 05/06/2013 05/16/2013 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.8
717TD-I 04/03/2012 04/11/2012 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.5
718TD-I 04/03/2012 04/11/2012 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-AND
710TD-I 02/14/2012 02/16/2012 NITRATE Distribution System DIST-A1.8
PUA0347-I 01/12/2011 01/27/2011 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.22
PTG079801-I 07/28/2010 08/16/2010 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A0.26
PSA078602-I 01/28/2009 03/20/2009 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.6
PRB049102-I 02/18/2008 05/05/2008 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.51
A71107P1-I 11/06/2007 01/10/2008 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.8
A70501V1 04/30/2007 05/14/2007 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.4
A60907AP1 09/06/2006 09/18/2006 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.2
A50908BY-1 09/07/2005 09/26/2005 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.4
A40914P-1I 09/13/2004 10/27/2004 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.3
A30828AD-1 08/27/2003 09/10/2003 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A0.2
A30827BB-1 08/26/2003 09/05/2003 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A1.3
A20925K-1 09/24/2002 10/14/2002 NITRATE EP FOR WELLFIELD (WELLS #1, #2, #6) EP-A0.07
 

Archived Nitrate Samples
Sample ID Sample
Date		 Date
Received		 Analyte Name Source Name Source
ID		 Result
A10808W*A 08/07/2001 09/10/2001 Nitrate WELLFIELD (WELLS #1 & #2) A1.2
A10725M*A 07/24/2001 09/06/2001 Nitrate WELLFIELD (WELLS #1 & #2) A1.2
A10725MAA 07/24/2001 07/30/2001 Nitrate WELL 1 AA1.2
A01107B*A 11/06/2000 11/14/2000 Nitrate WELLFIELD (WELLS #1 & #2) AND
990930N*A 09/29/1999 10/15/1999 Nitrate WELLFIELD (WELLS #1 & #2) A1.2
9909300*A 09/29/1999 10/15/1999 Nitrate WELLFIELD (WELLS #1 & #2) AND
990930O*A 09/29/1999 03/13/2001 Nitrate WELLFIELD (WELLS #1 & #2) AND
980917Q*A 09/16/1998 10/14/1998 Nitrate WELLFIELD (WELLS #1 & #2) A1.3
980227N*A 02/26/1998 03/05/1998 Nitrate WELLFIELD (WELLS #1 & #2) A0.1
971014K*A 10/13/1997 10/23/1997 Nitrate WELLFIELD (WELLS #1 & #2) A0.07
970305Q*A 03/04/1997 03/17/1997 Nitrate WELLFIELD (WELLS #1 & #2) A0.03
960925AW*A 09/24/1996 10/23/1996 Nitrate WELLFIELD (WELLS #1 & #2) A0.07
950706G*A 07/05/1995 09/19/1995 Nitrate WELL #2 AB0.04
940406J*A 04/05/1994 06/02/1994 Nitrate WELLFIELD (WELLS #1 & #2) A0.8
930730F*A 07/29/1993 02/25/1994 Nitrate WELLFIELD (WELLS #1 & #2) A0.04
 



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