OHA Drinking Water Services
OR41
PWS ID: 00369 ---- HEPPNER, CITY OF
GW/GWUDI Source Detail

Non-purchased Groundwater/GWUDI Sources:
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SRC-AA:  WELL #1
GW, Active, Permanent ---- Operating Period: Jan 1 - Dec 31
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: High   Surface water within 500 feet: Yes
Construction adequate?: No - Seal Missing or Unknown   Surface water type: Stream
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 03/12/2019
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 05/01/2011 - 05/31/2012
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+		1
0
0		1
0
0		1
0
0		1
0
0		2
0
0		0
-
-		1
0
0		1
0
0		1
0
0		1
0
0		0
-
-		1
0
0		11
0
0
Outcome/Determination:  Low Risk
No historic GWUDI data were found.
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SRC-AB:  WELL #3
GW, Active, Seasonal ---- Operating Period Unknown
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: Moderate   Surface water within 500 feet: Yes
Construction adequate?: Yes   Surface water type: Stream
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 03/12/2019
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? No

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 06/01/2012 - 12/31/2012
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+		0
-
-		0
-
-		0
-
-		0
-
-		0
-
-		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		7
0
0
Outcome/Determination:  Low Risk

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 05/01/2011 - 06/17/2011
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+		0
-
-		0
-
-		0
-
-		0
-
-		0
-
-		6
2
2		0
-
-		0
-
-		0
-
-		0
-
-		0
-
-		0
-
-		6
2
2
Outcome/Determination:  E. coli Confirmed
No historic GWUDI data were found.
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SRC-AC:  WELL #2
GW, Active, Seasonal ---- Operating Period: Jan 1 - Dec 31
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: High   Surface water within 500 feet: Yes
Construction adequate?: No - Inappropriate Materials   Surface water type: Stream
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 03/12/2019
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 05/01/2011 - 06/30/2012
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		0
-
-		1
0
0		11
0
0
Outcome/Determination:  Low Risk
No historic GWUDI data were found.
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SRC-AE:  WELL #5
GW, Active, Seasonal ---- Operating Period Unknown
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: Moderate   Surface water within 500 feet: No
Construction adequate?: Yes   Surface water type: Unknown
E. coli sources within 2-year time-of-travel: No   Data last updated: 03/12/2019
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.
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SRC-AD:  WELL #4
GW, Inactive (Disconnected), Other ---- Operating Period: Jan 1 - Dec 31
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: Moderate   Surface water within 500 feet: Unknown
Construction adequate?: Yes   Surface water type: Unknown
E. coli sources within 2-year time-of-travel: Unknown   Data last updated: 06/07/2010
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.
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