The URL can be used to link to this page

Home My WebLink About1979-06-19; City Council; 5840-1; Lease and installation of dewatering equipment; OT-TX/ nr onrti onnn r^. I I L~2'CITY OF CARLSBAD Q l j tA r** AGENDA BILL NO. 5840 Supplpment. #1 Initial: Dept. Hd. DATE: June 19. J979 DEPARTMENT: Purchasing _ c> Mgr> SUBJECT: Lease and Installation of Mechanical Dewatering Equipment Statement of the Matter On May 15, 1979, Council Adopted Resolution No. 5766, approving specifications and authorizing the Clerk to invite bids for the lease and installation of Me- chanical Dewatering Equipment for the Encina Water Pollution Control Facility. In accordance with Section 3.28.120 of the Municipal Code, Notice to Bidders was published and Request for Bids was made. Four responses were received, opened, witnessed and recorded on June 4, 1979. The lowest responsive bid that met the specifications was from Ralph B. Carter Company; 192 Atlantic Street; Hackensack, New Jersey 07602 in the amount of $2,120 per month, plus transportation and start-up charges of $3,750. Exhibit 1. Tabulation of Bids - Exhibit "A". 2. Letter from CM Engineering Associates dated June 5, 1979 - Exhibit "B". 3. Resolution No. ^^OS'- Recommendation It is recommended that the Contract for the lease and installation of the Me- chanical Dewatering Equipment be awarded to Ralph B. Carter Company. If Council concurs, they should adopt Resolution No. " Council Action 6-19-79: Council adopted Resolution No. 5805 Vendor TABULATION OF BID NO. 16 Lease and Installation of Dewatering Equipment Monthly Transportation Credit Start Lease Charges Toward Up Purchase Charges Total Monthly lease, trans. & Set- up Ashbrook $3,000 Simon-Harley 11600 E. Hardy Houston, Texas 77092 (alternate BID) $1,800 Bird Machine 24050 Madison St. Torrance, CA 90505 $1,541 Ralph B. Carter Co. $2,120 192 Atlantic St. Hackensack, NJ 07602 Ingersoll-Rand Co. 150 Burke St. Nashua, NH 03061 $4,000 $2,500 $2,500 $ 900 $3,000 $1,200 ($2,400 Mo.) $800 ($1,500 mo.) $800 (100%) Inc. (48%) (90%) $750 $1,065 $6,300 $5,100* $2,441* (plus tax) $5,870 $6,265 *Does not meet specifications Exhibit "A" Exhibit "8" CIVIL & ENVIRONMENTAL ENGINEERING . ENGINEERING ASSOCIATES LAND PLANNING AND SURVEYING. June 5, 1979 Mr. Les Evans Encina Joint Powers 6200 Avenida Encinas Carlsbad, CA 92008 Dear Les: Per your request, C M has reviewed the dewatering equipment manufacturers' bids received by the City of Carlsbad on 4 June 1979. Of the four manufacturers contacted to submit bids only Carter and Kruger have equipment available for immediate delivery. Cost Analysis The Carter 32-1.5M belt press and the Kruger 250 Scroll centrifuge would provide the needed dewatering capacity to process the daily Encina sludge volume. The estimated total costs associated with dewatering via the Carter belt filter and the Kruger centrifuge are summarized in Tables 1 and 2 respectively. Interim Sludge Dewatering Recommendation Based on the equipment available and the cost estimates in Tables 1 and 2 it is C M's recommendation that Encina secure the use of the Carter 32-1.5M belt press. This recommendation is based on the following: (1) The cost analysis indicates a substantial cost savings with the belt filter. (2) The plant expansion and upgrading plans incorporate the use of belt filters for the ultimate dewatering system. The use of belt filters for the interim system affords the operators the opportunity to gain valuable operating experience on belt filter operations. (3) Previous on-site investigations at Encina WPCF indicate belt filters are capable of consistently 550 West Vista Way • Melrose Center • Vista, California 92083 • Phone (714) 758-3680 225 E. Airport Dr. • P.O. Box 6087, San Bernardino, California 92412 • Phone (714) 884-8804 or (714) 825-9562 Mr. Les Evans June 5, 1979 Page 2 producing dewatered sludge concentrations of 25% TS on digested primary sludge. The possibility exists to reduce hauling cost by $60 per day if a dewatered sludge of 25% is consistently achieved because the Bonsall landfill site would be available for final disposal. This potential cost saving is not evident with centrifugation based on the on-site experiments conducted by C M. C M appreciates the opportunity to be of service and remains available to provide immediate assistance in the design and installation of the interim dewatering station. Very truly yours, C M .ENGINEERING ASSOCIATES J^o/in S. Murk jw TABLE 1 ENCINA WPCF CARTER 1.5M BELT PRESS COST ESTIMATE FOR 18 MONTHS ITEM COST Dewatering Costs Capital § Installation (1). . . $ 40,000 . . . $/day 7J5 Power Installed hp 13 Auxiliary hp 11 $/day _5 Chemical (2) Ib/day 415 $/day 85 Operator hr/day 3 $/day 30^ Lease $/day 70 Maintenance $/day _5_ Disposal Costs Hauling $/day 160 Dumping $/day 100 TOTAL 18 Month Cost $/day 521 (1) Includes cost for auxiliary equipment, engineering and installation (2) Based on Aqua Ben 1124 polymer ,•*••*. TABLE 2 ENCINA WPCF KRUGER CENTRIFUGE COST ESTIMATE FOR 18 MONTHS ITEM COST Dewatering Costs Capital $ Installation (1). . . $ . . . $/day Power Installed hp Auxiliary hp $/day Chemical (2) Ib/day $/day Operator hr/day $/day Lease $/day Maintenance $/day Disposal Costs Hauling $/day Dumping $/day TOTAL 18 Month Cost $/day 40,000 73 35 9 li 415 83 3 30 131 160 100 592 (1) Includes cost for auxiliary equipment, engineering and installation. (2) Based on Aqua Ben 1124 polymer. 1 2 . 3 4 5 6 7 8 9 10 11 12 13 .14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 RESOLUTION NO. 5805 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CARLSBAD, CALIFORNIA, ACCEPTING A BID AND AUTHORIZING THE EXECUTION OF A CONTRACT FOR THE LEASE AND INSTALLATION OF MECHANICAL DEWATERING EQUIPMENT. . BE IT RESOLVED by the City Council of the City of Carlsbad as follows: 1. That the bid of Ralph B. Carter Company; 192 Atlantic Street; Hackensack, New Jersey 07602, is hereby accepted and the City Manager is hereby authorized to execute a1 contract for the lease and installation of Mechanical Dewatering Equipment at a cost of $2,120 per month, plus transportation and set up charges of $3,750. PASSED, APPROVED AND ADOPTED by the City Council of the City of Carlsbad at a regular meeting held on the 19th day of June , 1979, by the following vote, to wit: AYES: Mayor Packard, Councilman Lewis, Skotnicki, Anear and Councilwoman Casler NOES: None ' ABSENT: None RONALD C. PACKARD, Mayor ATTEST: ALETHA L. RAUTENKRANZ, City Clerk By: Anita Back Murphy, Deputy City Clerk (SEAL)