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HomeMy WebLinkAbout1986-01-07; City Council; 8467; Encina Sewer Metering ProjectCHQOF CARLSBAD — AGENIQBILL 1-7-MTG.. PEPT. U/M ENCINA PROJECT oLU a. Q. O § U ou RECOMMENDED ACTION: Approve Resolution No.which authorizes a sewer metering project at Encina and direct a fund transfer for the project budget. ITEM EXPLANATION: The Encina flows are metered by the member agencies and at the plant. Carlsbad contributes flows at various locations to the Vista, San Marcos, Buena and Leucadia trunk lines which cross the city. Carlsbad's flows are not metered but are mathematically developed by summing the agency flows and then subtracted from the plant flow. Metering all Carlsbad connections is estimated to cost $200,000 - $300,000 and would result in a considerable annual maintenance cost. The present method of determining Carlsbad flows is straight forward, however any meter malfunction of the member agencies can adversely affect the calculations. Accurate flow information is needed to determine Carlsbad's charges from Encina (about 60% of total operating costs are variable costs based on flow) and to accurately project remaining capacity and the gallons per average EDU. It is proposed that Carlsbad install a single meter at the Encina influent structure which will serve as a check meter on the Vista and Leucadia meters and/or the plant meter. A schematic diagram is included as Exhibit A. This meter will assist in more accurately determining Carlsbad's flows to the plant and is considered a more cost effective alternative than metering all of Carlsbad's connections. The total project budget is estimated to be $49,500. The Encina Technical Advisory Committee recommended to the JAC that this metering program be implemented. The JAC approved the proposal at its meeting of August 28, 1985. FISCAL IMPACT; The Sewer Construction Fund is estimated at $3.3 million at year end. The project is a permanent addition to Encina and is appropriately funded from the Sewer Construction Fund. EXHIBITS: A. Encina Meter Schematic B. Resolution No. Coordination copy to: Engineering Department Finance Department Buena Meter B San Marcos Meter Carlsbad Flow Vista Meter I A Buena Outfall ' Meter ^ I I Proposed Meter i S~\ Q Carlsbad Flow "1 r ENCINA San Marcos Outfall Meter Carlsbad Flow I | Plant Flow or H (corrected) E,F + G (proposed) Carlsbad Flow H (corrected) - (A+B+C+D) or E,F + G (proposed) - (A+B+C+D) I Effluent Meters Carlsbad Flow Leucadia Flow Leucadia Meter Encinitas Flow 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. 8341 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CARLSBAD, CALIFORNIA, APPROVING A SEWER METER PROJECT AND AUTHORIZING THE TRANSFER OF FUNDS WHEREAS, the City of Carlsbad is a party to the Encina Joint Powers Agency for the construction, operation and maintenance of the Encina Water Pollution Control facility; and, WHEREAS, the City of Carlsbad does not meter the city sewage flows to the Encina facility but determines Carlsbad flows by subtracting the sura of the other five agencies' flows from the total plant flow; and, WHEREAS, the method of calculating Carlsbad's flow is affected by the operation and accuracy of the other agency flows; and, WHEREAS, the Manager of the Encina facility proposes to install a meter which will serve as a check on the other agency meters and the plant meters which will result in more accurate calculation of Carlsbad's flow; NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of carlsbad as follows: 1. The above recitations are true and correct. 2. The Sewer Meter Project as outlined by letter from the Manager of the Encina Water Pollution Control Facility attached hereto and made a part hereof is approved. 3. The Director of Finance is directed to transfer forty-nine thousand five hundred dollars ($49,500) from the Sewer Construction Fund Reserve to the Sewer Meter Project budget. 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 PASSED, APPROVED AND ADOPTED at a regular meeting of the City Council of the City of Carlsbad held on the 7th day of January 1986, by the follwoing vote, to wit: AYES: Council Members Casler, Lewis, Kulchin, Chick NOES: Council Member Pettine ABSENT: None y. MARY H. 0ASLER, Mayor ATTEST: ALETHA L. RAUTENKRANZ, City Clerk (SEAL) c ENCINA WATER POLLUTION CONTROL FACILITY 6200 Avenida Encinas Carlsbad, CA 92008-0171 Telephones (619) 438-3941 (619)438-3954December 16, 19, City of Carlsbad 1200 Elm Avenue Carlsbad, California 92008 Attention: Mr. Roger Greer Subject: Carlsbad Sewage Metering Station Proposal for Engineering Services UTILITIES & c MAINTENANCE '-.'-; DEPT. • •' Ref: 1F.1326 At the 3uly, 1985 OAC meeting the TAG recommendation that Carlsbad install a meter at the Encina plant was approved. The purpose of the meter is to provide a more direct measurement of Carlsbad flow and a redundancy to assist in metering accuracy rather than relying only on periodic calibrations. Also, the meter would assist in addressing the Basic Agreement, Section 18 - Infiltration Distribution and the need for a 3 year Flow/EDU analysis to correct for past inaccuracies. I recommend Encina through Leucadia County Water District (LCWD) award and admi- nister the meter design and construction efforts. Pursuant to this I requested Wilson Engineering to submit the attached design and construction services pro- posal. The proposal and fee appear reasonable. Since this project was not included in the Encina budget funding needs to be provided. I would recommend the following total project budget: Engineering: Construction: Design Construction Services Contingency Contingency Total $5,500 2,500 1,500 35,000 5,000 $9,500 $40,000 49,500 With Carlsbad's concurrence and funding I will recommend to LCWD approval of the letter proposal from Wilson Engineering. NOW SERVING THE CITY OF VISTA, CITY OF CARLSBAD, BUENA SANITATION DISTRICT, SAN MARCOS COUNTY WATER DISTRICT, LEUCADIA COUNTY WATER DISTRICT AND ENCINITAS SANITARY DISTRICT Mr. Roger Greer Subject: Carlsbad Sewage Metering Station December 16, 1985 Page 2 At this stage I would estimate a July 1, 1986 on line date in accordance with the following schedule: NTP Wilson Engineering Design and Specifications Preparation Bid Award Construction On Line Please call if you have any questions. Very truly yours, January, 1986 February-March, 1986 April, 1986 May, 1986 May-June, 1986 July 1, 1986 Richard General Mana; RWGrmaj Attachment ENCINA WATER POLLUTION CONTROL FACILITY 6200 Avenida Encinas, Carlsbad, CA 92008-0171 (619) 438-3941, (619) 438-3954 .Serving North San Diego County '**«*'' WILSON ENGINEERING December 3, 1985 Encina Water Pollution Control Facility 6200 Avenida Encinas ^.vVp P.O. Box 1005 Carlsbad, CA 92008 Attention: Richard W. Graff Subject: Proposal for Engineering Services Carlsbad Sewage Metering Station We are pleased to provide the Encina WPCF with the following proposal for Engineering services for design of a sewage metering station. We propose to do the work on an hourly rate 'basis with a cost ceiling of $5,500 for Tasks 1 and 2. Task 3 will be done on an hourly rate basis with an estimated cost ceiling of $2,500. SCOPE OF SERVICES Wilson Engineering will do the following Tasks 1. Perform an analysis to determine the future influent metering requirements of the Encina Plant and recommend facilities to be installed as part of this project. Parshall vs. Palmer Bowlus Flumes will be considered. Station cost, accuracy, and constructabili ty will be among the criteria analyzed. 2. Based upon the recommendation from Task 1, biddable plans and specifications will be produced. Design drawings and specifications will include mechanical, structural and electrical details and will be comprised of flume, flume support pad, flume access structure, flow measurement and recording instrumentation, telemetry equipment for transmission to the Encina main control panel and all necessary structural, electrical and mechanical appurtenances. The specifications will include a recommended construction sequence to ensure that raw sewage flow is uninterrupted during construction of the metering station. DEXTER S WILSON PE KEVIN E SCHMIDT PE ir c: e. i v t- 3138 ROOSEVELT STREET. SUITE "M"CARLSBAD. CALIFORNIA 92OO8 (619) 434-7O19 Richard W. December Page Two December 3, 1985*"*'' Assistance during construction including inspection review of submittals, clarifications during bidding and, construction and change orders if necessary. This task will be done as needed based on the contractors work schedule. At the present time we estimate that 30 hours of on site inspection will be needed. TIME OF COMPLETION We estimate that Task 1 can be completed within a week of your notice to proceed with the work. We estimate that Task 2 will be 100% complete in six weeks after completion of Task 1. Task 3 will take approximately 4 months. COMPENSATION Work completed under this contract will be billed on a monthly basis. Fees will be calculated on an hourly rate basis by multiplying the actual hours worked on the job in each work classification by the rates in the schedule attached as Exhibit "A". QUALIFICATIONS Dexter S. Wilson will coordinate the services described above. Mr. Wilson is a Registered Civil Engineer in California and graduated from Stanford University with a Bachelor of Science in Chemistry, and from the University of Arizona with a Master of Science in Engineering. A copy of his resume is attached. We appreciate the opportunity to submit this proposal for Engineering services. We look forward to working with you on the project. Respectfully submitted, Wilson Engineering_ Dexter S. Wilson DSWrmry Attachments Richard W. Grafff*^ December 3, Page Three I accept the proposal and authorize the work described above to be performed. Encina WPCF Date December, 1985 EXHIBIT "A" WILSON ENGINEERING Rate Schedule CLASSIFICATION: Office Personnel Engineering Design Engineer Project Engineer (RCE) Principal Engineer (RCE) Drafting Draftsman Clerical Secretary HOURLY RATE $40.00 $50.00 $55.00 $30.00 $15.00 DEXTER S. WILSON EDUCATION Bachelor of Science, Chemistry, Stanford University, 1977. Master's Degree, Civil Engineering, University of Arizona, 1979 PROFESSIONAL AFFILIATIONS Registered Professional Engineer, No. C-33692, California. Member, Water Pollution Control Federation. Member, American Water Works Association. EXPERIENCE 1978-1981 1981-1983 1983-Present SCOPE OF ACTIVITIES Brown and Caldwell, Tucson, Arizona and Pasadena, California Fraser, Wilson & Associates, Carlsbad, California Wilson Engineering, Carlsbad, California The following projects are categorized to indicate the scope of professional activities. WATER SYSTEMS Investigative study of nitrate in Arizona drinking water supplies for the State of Arizona, Department of Health Services. The study dealt with sources and removal methods for nitrate in water supplies, as well as identification of current and projected problem areas - Project Engineer. Water system review and design of pressure reducing station for 110 unit subdivision in Carlsbad, California - Project Manager. Design of water systems, including potable, non-potable and reclaimed water for 18 mgd wastewater treatment plant. Design included backflow prevention, pumping stations, chemical feeders, strainers, and piping systems - Project Engineer. Design of water booster pumping station for 200 unit sub- division in Escondido, California - Project Manager. STORM DRAINAGE SYSTEMS Preliminary study and project report for stormwater control facilities for a 1000 unit subdivision in Seal Beach, California. A 200 cfs stormwater pumping facility was included in this study - Project Manager. Design of storm drainage system for a 20 acre waste- water treatment plant site. The design included a 1300 foot section of 30 foot wide channel which carried a peak flow of 2000 cfs through the site - Project Engineer. WASTEWATER SYSTEMS Design of an 18 mgd activated sludge plant for the Encina Joint Powers, Carlsbad, California. The plant was designed for modular expansion to 45 mgd and includes a cogeneration system to produce on-site electrical power. The $55,000,000 project was divided into four equipment pre-purchase contracts and three construction contracts - Project Engineer. Phase III-A Project Report for the Encina Water Pollution Control Facility for expansion of the plant from 18 mgd to 22.5 mgd -Project Engineer. Sludge management study and chemical characterization of sludge for the City of Tucson - Project Engineer. Master Plan of Sewers for the Vista Sanitation District, Vista, California - Project Engineer. Facilities plan for the City of Colorado Springs, Colorado • Project Engineer. Industrial Waste Survey Procedures Manual for the Maricopa Association of Government - Project Engineer. Industrial waste monitoring for the City of Simi Valley - Project Engineer. Design and prepare plans and specifications for wastewater pumping station for 110 unit subdivision, Carrillo Unit #2, Carlsbad, California - Project Engineer. Design and prepare plans and specifications for wastewater pumping station for 200 unit subdivision, Quail Ridge, Carlsbad, California - Project Engineer. Consultant to the Vista Sanitation District for the setup of procedures for maintenance, management and operation of the District, Vista, California - Project Engineer. GOVERNhgNT CONTRACTS U.S. Navy, open end contract, 32nd Street Naval Base, San Diego, California. Specific projects included repairs to a;pier, repairing of a parking lot, design of a golf cart washing area and installation of chain link fencing - Project ' Mahajger. U.S. Marine Corps, replacement of water main, Camp Pendleton, Oceanside, California - Project Engineer.