90872 GW/GWUDI Source Detail | Data Online | Oregon Drinking Water Services

OHA Drinking Water Services

PWS ID: 90872 ---- NORTHWEST ALUMINUM COMPANY ---- INACTIVE

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:	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:	12/20/2019

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 1/26/2011 - 2/9/2011

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total
# Samples TC+ E. coli+	1 0 0	1 0 0	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	2 0 0
Outcome/Determination: Low Risk

No historic GWUDI data were found.

SRC-AB: WELL #3

GW, Inactive, Emergency ---- 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:	12/20/2019

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 1/26/2011 - 2/9/2011

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total
# Samples TC+ E. coli+	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -
Outcome/Determination: N/A

No historic GWUDI data were found.

SRC-CA: WELL #4

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

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:	Yes	Data last updated:	12/20/2019

Monthly Assessment Monitoring Data

Monthly Assessment Monitoring Required? No

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 1/26/2011 - 2/9/2011

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total
# Samples TC+ E. coli+	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -	0 - -
Outcome/Determination: N/A

No historic GWUDI data were found.

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