ITEM TITLE:
title
Update on New Municipal Well
body
SUBMITTED BY: Jason Miles, Capital Facilities Director
FISCAL NOTES:
Expenditure Required: $28,000
Unencumbered Balance: $41,651.32
Funding Source: Account Code 15-350-1602 New Water Well
RECOMMENDATION:
rec
N/A
end
SUMMARY STATEMENT:
New Well Project Update
Over the past year we have been working with Shannon & Wilson and Dean Day of Day Engineering to determine a preferred location for an additional well. The reports from both Shannon & Wilson and Day Engineering are optimistic regarding developing a new well near Hermon Hutchens Elementary School.
Summary of the Aquifer Modeling Report from Shannon & Wilson (full report is attached):
'Based on nearly 4-months of water level measurements at Boring B-1 the current operation of Well 4 has a minimal impact on water levels in Boring B-1. If Well 4 is operated for longer periods of time in the future we would expect more significant impact to water levels in the vicinity of Boring B-1. Using the current pumping scenario, the model predicts that steady-state conditions are reached in the aquifer after 20 days with a maximum predicted drawdown of 2.4 feet at Boring B-1. Based on the water level measurements, the aquifer appears to respond rapidly to recharge events; however, based on the information available, we are unsure if the recharge events were precipitation or snow melt.
Based on our conclusion about the similarity of the aquifer between the two locations and the results of the numerical modeling, it appears that a production well located near Boring B-1 should be able to produce similar amounts of water as Well 4. To achieve this production a significant development effort would be needed and there is the possibility that the aquifer can't be developed enough to realize similar production. If operated simultaneously for longer periods of time than Well 4 is currently operated it is likely that additional interference (increased drawdown and pot...
Click here for full text