06118 GW/GWUDI Source Detail | Data Online | Oregon Drinking Water Services

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Groundwater/GWUDI Source Detail for PWS 06118 ---- COLUMBIA HILLS HOA

Non-purchased Groundwater/GWUDI Sources:

SRC-AA - WELL #1
SRC-AC - WELL #4
SRC-AG - WELL #11
SRC-AB - WELL #7 (Inactive)
SRC-AD - WELL #2 (Inactive)
SRC-AE - WELL #8 (Inactive)
SRC-AF - WELL #6 (Inactive)
SRC-AH - WELL #14 (Inactive)
SRC-CA - WELL #8F1 (NOW SRC-AA IN 06211) (Inactive)

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SRC-AA: WELL #1

GW, Active, Seasonal ---- Operating Period: Jan 1 - Dec 31

Disinfection: HYPOCHLORINATION, PRE ; 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:	01/24/2013

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-AC: WELL #4

GW, Active, Seasonal ---- Operating Period Unknown

Disinfection: HYPOCHLORINATION, PRE ; RESID. MAINT. HYPOCHLORINATION

Sensitivity Analysis Data

Aquifer sensitivity:	High	Surface water within 500 feet:	No
Construction adequate?:	No - Inappropriate Depth	Surface water type:	Unknown
E. coli sources within 2-year time-of-travel:	Yes	Data last updated:	01/24/2013

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 10/01/2012 - 09/30/2013

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total
# Samples TC+ E. coli+	1 0 0	1 0 0	1 0 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	11 0 0
Outcome/Determination: Low Risk

No historic GWUDI data were found.

SRC-AG: WELL #11

GW, Active, Permanent ---- Operating Period Unknown

Disinfection: HYPOCHLORINATION, PRE ; RESID. MAINT. HYPOCHLORINATION

Sensitivity Analysis Data

Aquifer sensitivity:	Moderate	Surface water within 500 feet:	Yes
Construction adequate?:	Yes	Surface water type:	Unknown
E. coli sources within 2-year time-of-travel:	No	Data last updated:	07/19/2023

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-AB: WELL #7

GW, Inactive, Other ---- Operating Period: Jan 1 - Dec 31

Disinfection: HYPOCHLORINATION, PRE ; 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:	01/24/2013

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-AD: WELL #2

GW, Inactive, Other ---- Operating Period: Jan 1 - Dec 31

Disinfection: HYPOCHLORINATION, PRE ; 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:	03/18/2015

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-AE: WELL #8

GW, Inactive, Permanent ---- Operating Period Unknown

Disinfection: HYPOCHLORINATION, PRE ; RESID. MAINT. HYPOCHLORINATION

Sensitivity Analysis Data

Aquifer sensitivity:	Unknown	Surface water within 500 feet:	Unknown
Construction adequate?:	Unknown	Surface water type:	Unknown
E. coli sources within 2-year time-of-travel:	Unknown	Data last updated:

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? Unknown
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-AF: WELL #6

GW, Inactive, Seasonal ---- Operating Period Unknown

Disinfection: HYPOCHLORINATION, PRE ; RESID. MAINT. HYPOCHLORINATION

Sensitivity Analysis Data

Aquifer sensitivity:	Unknown	Surface water within 500 feet:	Unknown
Construction adequate?:	Unknown	Surface water type:	Unknown
E. coli sources within 2-year time-of-travel:	Unknown	Data last updated:

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? Unknown
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-AH: WELL #14

GW, Inactive, Permanent ---- Operating Period Unknown

Disinfection: HYPOCHLORINATION, PRE ; 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:	07/17/2023

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No
No monthly assessment monitoring schedule found.
No historic GWUDI data were found.

SRC-CA: WELL #8F1 (NOW SRC-AA IN 06211)

GW, Inactive (Disconnected), Other ---- Operating Period Unknown

Disinfection: None

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:	01/24/2013

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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