OHA Drinking Water Services
OR41
PWS ID: 05364 ---- MT TERRACE MHP
GW/GWUDI Source Detail

Non-purchased Groundwater/GWUDI Sources:
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SRC-AA:  WELL #1 - LOWER
GW, Active, Permanent ---- Operating Period Unknown
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: High   Surface water within 500 feet: No
Construction adequate?: Yes   Surface water type: Unknown
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 2/21/2023
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 4/1/2010 - 12/31/2011
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+ 		1
0
0		 1
1
0		 1
0
0		 1
0
0		 1
0
0		 1
1
0		 0
-
-		 1
0
0		 1
1
0		 1
1
0		 2
0
0		 2
1
0		 13
5
0
Outcome/Determination:  Chronic Total Coliform
No historic GWUDI data were found.
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SRC-AD:  WELL #4
GW, Active, Permanent ---- 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: Yes   Data last updated: 2/21/2023
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-AB:  WELL #2 - UPPER
GW, Inactive (Abandoned), Other ---- Operating Period: Jan 1 - Dec 31
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: High   Surface water within 500 feet: No
Construction adequate?: No - Inappropriate Materials   Surface water type: Unknown
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 2/21/2023
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 4/1/2010 - 12/31/2011
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+ 		1
0
0		 1
0
0		 1
0
0		 1
0
0		 1
0
0		 1
0
0		 0
-
-		 1
0
0		 1
0
0		 1
0
0		 2
1
0		 2
1
0		 13
2
0
Outcome/Determination:  Low Risk
No historic GWUDI data were found.
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SRC-AC:  WELL #3 (UNAPPROVED)
GW, Inactive (Disconnected), Other ---- 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: Yes   Data last updated: 1/9/2018
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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