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Home My WebLink About205b Contract Change Order w/CPH - North Water Reclamation FacilityCONTRACT CHANGE ORDER 50640.03 November 8, 2005 Sanford North Water Reclamation Facility (SNWRF) Additive This change order addresses items required to ensure a complete, safe and durable Primary Treatment/Disinfection System as well as the treatment capabilities of the Sanford North Water Reclamation Facility. The changes included in this change order are the removal and replacement of the existing Secondary Clarifier No. 3 sludge rake mechanism and bridge structure and the addition of a second automatic continuous cleaning bar screen and a screenings conveyor at the new influent structure. This change order also includes credits from the contractor for Owner Direct Purchase items. Reason for Change: Secondary Clarifier No. 3 has been in operation for 20 years which is the typical life expectancy for clarifier equipment. Due to the age of the equipment, continued increases in time and cost for maintenance and to ensure reliability of treatment and continuous operation, the total replacement of the operational mechanism has become necessary. This will complete the replacement of all of the SNWRF's clarifier equipment which was begun three years ago. A automatic continuous cleaning second bar screen is being added to the new influent structure in the channel already constructed for this purpose. This will provide the new influent structure with the capability of accommodating the entire raw wastewater flow to the SNRWF and will allow for the demolition of the existing grit and wastewater screening structure and eliminate another source of wastewater plant odors. Due to the efficiency of the new bar screens installed in the new influent structure, waste screenings have increased significantly, resulting in additional operator time to monitor, rotate and empty the screening dumpsters. The addition of a screenings conveyor will allow for the removal of water from the screenings, reducing the volume of waste being collected in the dumpster, and will allow for the use of a single dumpster to handle both mechanical bar screens. This will reduce operator time currently being dedicated to the new influent structure. ADDITIONS a.) Furnish and install new bar screen and screenings conveyor and all $240,000.00 associated appurtenances and electrical controls. (CHP -35 ) b.) Remove and replace Clarifier No. 3 equipment and bridge structure.$355,000.00 (CHP -36) 11 C.) Owner Direct Purchase deduction for Clarifier and Bar screen equipment. (CHP -39) Subtotals: ($316,875.70) 00 11 ($316.875.70 Recommended by: Engineer Date Accepted by: i P r-, aw / 5 v Contractor Date Accepted by: wner Date NOV704-2005 FRI 01:56 PM W -H SMITH 8'' " ADMIN November 4, 2005 CP14 Enginters, Inc 500 W. Fulton Street Sanford, Fl. 32771 A.TTN: Benjamin M. Fries RE: Barscreen and Compactor . Dear Mr. Fries; FAX NO, 407321468 P. 02/02 Wharton -Smith, Inc. CONSTRUCTION GROUP The cost to add a second barscreen, a compactor and a new control panel on the influent structure on the Sanford North PT/D job will be $240 ,000.00. Please log this as proposed change order ##35. We request a time extension of 90 days from proposal acceptance due to equipment lead time and installation time, Please advise on how you would like -us to proceed. Sincerely, Wharton -Smith, INC. Christopher Gayner Project Manager CC: bile 04-003 C- l0A & C-8 A 750 County Road 15 - P.O. Box 471028 • Lake Monrou, r1,5rida 32747-1028 • Phone: 407/321-8410 • Pux 407/323-1236 CG C03266q PC (:048585 CU C056506 NOV,07-2005 MON 02:10 PM FAX NO. V. uz/u� Wharton -Smift), Inc. CONSTRUCTION GROUP October 5, 2005 CPH Engineers, Inc SOO W. Fulton Street Sanford, Fl. 32771 ATTN: Benjamin M, Pries RE, Clarifier #3 Dear Mr. Fries: The cost to demolish the existing clarifier #3 mechanism and add a new mechanism on, the Sanford North PT/D job will be $355,000.00. Please log this as change proposal #36, We request a time extension of 90 days fToin proposal acceptance due t . o equipment lead time and installation time. Please advise on bow you would like us to proceed. Sincerely, Wharton -Smith, INC. Christopher Gayner Project Manager CC: File 04-003 C -10A & C -BA 750 County Road 15 - PC). Box 47102A i -alto Monroe, Floridu 32747-1028 - Pholla: 4071321-h410 , Fnx-4071323-1236 CG C032669 01COSW6. N04#7,04-2005 FRI 02:43 PM W -H SMITH F' ' ADMIN FAX NO. 407321468e P. 02 November 4, 2005 CPH Engineers, Inc 500 W. Fulton Street Sanford, Fl. 32771 ATTN: Benj ainin M. Fries RE: Owner Direct Purchase-Barscreen and Clarifier Dear Mr. Fries: Wharton -Smith, Inc. CONSTRUCTION GROUP Attached is the deduct for the owner direct purchase of the second cond barscreea mechanism and the clarifier mechanism. in tank #3 on the Sanford North. WR.F job. The deduct will be $316,875.70. Plense advise on how you would like us to proceed. Sincerely, Wharton -Smith, INC. Cli0stopher Gayner 'I-09ect Manager CC- 'file 04-003 C-1 OA & C -SA 750 County.Rnad 15 - P.O. Box 471028 - 7-akf: MOLIMC, Florida 32747-1029 - Phone: 4071321-8410 - Fax 407/123-1236 CCI C*03266t) PC C048385 CLIC0,56916 NOV-.04-2005 FR 02:44 PM W -H SMITH P^7 ADMIN FAX NO. 40732146810 P. 03 Summary VAvvian-SinrWth. lnr--. PROPOSAL SUMMARY Revision 0 PCO 1111039-1 TE 1 Credit to the City to purchaso equipment directly from vendors and utilize their tax exempt status, —THIS IS FOR THE CLARIFIER AND SECOND BARSCREEN EQUIPMENT... Theirs Is one additional adder for some ductwork that was added to tho DEI order. The duration for the additional work outlined In this proposal I., JQ working days. 11. 11 The Contract Time Extension due to this-Ohaage-Ordar, 1working days. 2 3 4 5 - 6 7 7.. 8 9 101 .. .... ... 11 From Page 2 $ (316,875.70) 12 13 14 875'(7A.) 16 17 From Page 3 0 18 201 .. ... .. ... 21 77 77777777=1, 22 From Page 4 23 24 25 26 j, , Tax i't ... . ....... I �I� ix fT�14. .I it 27, S"ij9CQNTR4� INV 281 291 30 31 33 34 .. ... ........... .. 11tarkii xk 35 0 ii i ............ .... tl�"!Q7�,y�;!,:i�'!",:,*,!;:**"';":! I ....... .... ... I it 36 Extended Project Overhead 0 Days Cost Per Day $ 37, Additional Insurance 0.00% M + L + T&E + S S (316,875.70 38 Additional Bond 0.00% M + L T&E + S $ (316,875.70) 39 40 41 421 43 V, VJICITA 44 ........................... (316,875.70)3 I NOV-104-2005 FRI 02:44 PM W -H SMITH P"" ADMIN FAX NO. 40732146814 P. 04 Pg 2 Materials MATERIAL ESTIMATE 13M IEM= UNI. -Tax an above a■Ef'.nviroquip-Clarifier Jax an above ONION ME INNEENIENIN 0110001001 ININE mm NNEINNIN ININEN INNNIN INNN NNININ No m.NIN NNIN INNNIN WOTAL TAX SAVINGS Mor NONE 00 INNIN MIN NIN INIEN ma � I ININNINIENE MKIN - 000110001 INNNINNNI m m 01100 m