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MAY 16 1994 BOOK 57 PAA04 rack of membranes within sixty days after receipt of your order. The installation of the remaining three racks of membranes may be spaced out thru 1985 when this offer expires. All new membranes will carry the standard DuPont three year warrantee, commencing when the membranes are placed in service. The warrantee in effect for membranes currently in service will not be affected in any way as a result of this proposed modification. The significance of this special pricing can best be realized by comparing the unit cost for the membranes offered in this proposed modification with our current list price for these membranes. The current list price for these membranes is 10,750.00 each or a 301,000.00 for twenty eight (28) membranes. This WSA proposal offers these membranes for only 6,250.00 ea or $ 175,000.00 if purchased in 1984. There are also several other circumstances which justify the necessity to act promptly upon this propsed modification. This proposal is specifically offered to WSA for use at. the Indian River RO plant. In order to take advantage of this special pricing it will be necessary to accept this offer and install the first seven (7) membranes by May 1, 1984. Since this offer is being made thru the DuPont Licensee who supplid the Indian River Plant, this offer will in no way affect the existing warrantee. The necessity to protect the existing warrantee is one reason that the WSA offer can not be matched by any other supplier. In order to fully protect the county with respect to the plant warrantee, it would be necessary for any other supplier to also accept the full plant warrantee and to secure a performance bond to support that wa--rantee. This increased liability for another supplier can only result in increased cost to the county. WSA has also investigated the use of alternate membranes for use in this modification as WSA is also a licensee of both Dow and Pilmtech membranes. However, our evaluation has `concluded that; first, no significant savings could be made without extensive equipment modification, secondly, the use of an alternate membrane would greatly compromise the options available for modifying the pretreatment system to reflect the latest cost saving technological developments. In summary, this proposed plant modification is an excellent opportunity for Indian River to expand its R.O. Plant camacity at the lowest posible capital cost while also reducing the operating cost of producing water at this facility. Should you have any questions concerning this matter please feel free to contact me at ( 305) 755-1874 . Yours very truly, -/Serge Latour Regional Manager 71