HomeMy WebLinkAbout056David W. Johnson
From:
Sent:
To:
Subject:
derano [derano@worldfront. com]
Tuesday, November 24,2009 11:50 AM
dwjoh nson @co.jefferson.wa. u s.
Supplemental Environmental lmpact Statement
To: David Wayne Johnson, Project Lead Planner dwjohnson(Oco.iefferson.wa.us Jefferson County
Depantment of Community Development
Thank you fon the opportunity to comment on the scoping process now taking place.
It has been stated on PUD's website, that any weII which taps into an aquifer that outcrops
in seawater is vulnerable to and /or a potential cause of seawater intrusion. Areas with a
histony of high chlonide values, above l@@ng/L, are considered highly vulnenable and based on
previous studies Brinnon is one of the areas that has been so identified. Because so littleis known about the dimensions and properties of local aquifers, thene are few areas on wells
which we can pneclude as not being vulnenable to the potential of salt water intrusion.
Statesman has used diffenent numbens in different planning documents for the amount of water
that will be needed fon the pnoposed resort.
However, none of the planning documents defines the aquifer from which the water will be
taken. It appears that no one has defined this aquifen. Thene are alneady wells with existing
waten nights of 5OOO gallons pen day. Before any water can be claimed by Statesman, thene
must be a scientific definitlon of the capacity of the entire aquifen, minus existing water
rights. Then we can begin to define what water Statesman might be able to use.
Vanious ln depth testing such as sub meter accurate surveying of wells, and numenical or
computer modeling, needs to be done to identify where salt water intrusion wiII occun. To
define the aquifer, various tests need to be done fon the next year. Wells on Black Point
need to be tested at diffenent times of the yean fon their capacity and, also, for salt water
intrusion. The pnoblem of intnusion is not limited to the specific shone sites but can effect
weIIs sevenal miles inland, in other wonds, gneater Brlnnon. The Gyben-Hertzberg Relations,
which Pud nefens to, fonmulates that fon eveny one foot drop in waten level the tnansition
zone immediately beneath will rise 40 feet, therefore even veny small changes in the waten
level can cause significant intrusion of salt water. Detailed necommendations by Waterworks
Consultants have been submitted to you during this scoping pnocess and are on the Brinnon
Group website. I suppont those testing necommendations.
Sincenely,
Olivia Alfano, Bninnon
1