1993-11-15_GENERAL DOCUMENTS - C1981017 ‎(2)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 11/15/1993
• Doc Name: Bid Documents ‎(IMP)‎ Hydrology Correspondence Part ‎(1 of 2)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

` warehouse storage.
The steel vessels, comprising the critical part of the
plant system, have been fabricated. The finished vessels
are the recycle tank, the polymer tank and two floc
tanks.
The electrical work within the plant is approximately 60%
complete.
As to what remains to be done for completion of the
project:
The following items had not been received by January 25,
and must be re-ordered: the dewatering screen and
associated steelwork, the Krebs cyclone, the connection
boxes for the underground pipeline, miscellaneous pipes
and fittings to connect the treatment vessels.
The piping network connecting the tanks, and installation
of the circulating pumps, remains to be completed.
Installation of the controls and hook-up of the equipment
must still be done.
Installation of the underground screening plant remains
to be done, and also installation of the underground
electrical system.
The piping network connecting the tanks within the plant
and installation of the circulating pump must be
completed.
As you know, TR-17 did not receive MLR Board approval until
February 27, and the Department of Health has not yet issued
the amendment for this water treatment system, although the
application was made last fall.
2) . As to the the ponds, Tom Johansen did the attached
calculations concerning clean-out of the 016 ponds, given the
inflow of solids since the last cleaning, which was completed
December 17, 1990. He calculates the sediment load in the
pond(s) at 14% of the allowable volume, with little or no
addition of solids from the mine drainage, which is very
clear. As a result, no pond cleaning will be necessary for
the foreseeable future.
The 001 ponds were cleaned in September, 1990 and it is
estimated (by visual observation) that they are now at
approximately 15% of capacity; the Sutey area ponds (021) were
cleaned in August, 1990 and it is estimated (visual
observation) that they are at approximately 20% of capacity;
the warehouse ponds were cleaned last fall as well, and are
estimated at approximately 20% of capacity.