In the construction industry they have a large container for processing
water that might be contaminated, sort of a square tanker they leave on site
and then cart away to process. At least that seemed to be the state of the
art for I-95 in Connecticut, in Bridgeport. Nothing like finding the
undocumented water feed to the local ice cream factory. The guys come out in
snow suits given out ice cream sandwiches to speed along the repair.

I am not sure anyother way one could do it. I haven't seen to many water
screens where they just used whatever was available. In Cold Spring, the
West Point Foundry, they had a screen on a small truck two wheel trailer to
back up near the marsh. The locals also were afraid of hitting undocumented
waterlines and overloading the small water system and at one time a water
tanker truck was arranged. Cleanup involved those pump sprayers used for
small fire fighting, worn on the back to spray off the crew as there was no
water pressure, ironically in a former water powered foundry.

----- Original Message -----
From: "Daniel H. Weiskotten" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 25, 2004 9:50 PM
Subject: Water Screening


> All this talk of screens and such has me pondering water screening, which
I
> recall only using once up in NY.  We pumped water out of the nearby ditch
> and all it did was more quickly freeze the cold soil into a giant mass of
> glacier-like ice on the screens.  (that was the same site that Marty
> Pickens set up a small tent so he could dig all winter, only to find that
> the warm humid air in tent condensed on the colder tent fabric and it
> rained on him all day long!)
>
> Anecdotes aside (I'm starting to sound like George M.!) I did refrained
> from using water sifting on one site because it would have created a great
> morass that would not have gone over well with the land owner.  It also
> would not have been feasible to take the soil back the lab for sifting.
>
> How does one logisticize (?) water screening in those situations where the
> soil needs to go back into the hole, where there is little drainage, or
> there are other problems ...?
>
>         Dan W.
>