OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details
PWS ID: OR41 95139
PWS Name: MONMOUTH KINGDOM HALL
 
Who Was Contacted and Phone: Zach Erdman (503) 871-4533
Contact Date: 01/13/2012
Contacted By: FARRELLY, PETER (DWP)
Contact Method/Location: Office
 
Assistance Type: PLAN REVIEW
Reasons: Coliform
None
 
Details: SUMMARY: Assessment sampling of unconfined well with UV treatment and nearby septic field DETAILS: These are corrections/amendments of previous contact report

Zach measured the following setback distrances:

144 from well head to septic tank/pump
223 from well head to septic sand filter
235 to drainfield

Also, the WS uses the Hallet 15XS-- an NSF 55 class A certified UV unit that is not validated to appropriate, post-2009, standards. Therefore, no inactivation credit is granted.
(UV acceptance criteria changed since the original plan review submission in late 2006.) ACTION NEEDED: Review well & UV plans when they arrive.
Since the current UV unit potentially masks accurate routine coliform sampling results, assessment sampling at the wellhead is recommended.


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