13 - Project #196 - Sole Source By-Pass Pumps Costa Mesa San itary District …an Independent Special District Protecting our community’s health and the environment by providing solid waste and sewer collection services. www.cmsdca.gov Memorandum To: Operations Committee Via : Scott Carroll, General Manager From: Rob Hamers, District Engineer Date: May 21 , 2013 Subject: Project # 196 – Installation of Backup Power and Pumping Capability Sole Source Findings Summary The project includes the purchase and installation of emergency response equipment at six pumping stations, including standby diesel gen erators at the Irvine and Canyon pumping stations and standby complete pumping systems at the Elden, 23 rd , Mendoza, and Victoria pum ping stations. The District has been utilizing a sole source vendor since 1985 for the Flygt pumps provided by Xylem for the District’s pumping stations. Standardization of the pumps simplifies emergency response, operations and maintenance, compatibility with other components, pumps and parts inventory, pump maintenance training, and allows continuation of the use of the advanced pump design from Flygt. The District is now considering backup pumping equipment at four stations and the District has the opp ortunity to continue maintaining this compatibility by making sole source findings for using Godwin backup pumping, also provided by Xylem. Staff Recommendation That the Operations Committee recommends the Board of Directors approves the following actio n:
Operations Committee May 21 , 2013 Page 2 of 3 1. Find that for reasons of conformity, uniformity, compatibility, simplification of maintenance and emergency response, it is in the best interests of the public for the District to approve the sole source of Godwin Pumps for the purchase of four (4) c omplete backup pumping station units at the Elden, 23 rd , Mendoza, and Victoria Pumping Stations. 2. Authorize the General Manager to negotiate directly with Xylem to purchase the four Godwin backup pumping units that will be installed as part of the constr uction contract for the above referenced Project #196 at an estimated cost of $300,000. The District will solicit bids to install the pumping units. Analysis In 1984, the District competitively bid and accepted an alternate pump style for the 23 rd Pumpin g Station, which was being remodeled to submersible design due to confined space entry issues and to conform to the design of the other pumping stations. The pumps accepted were ABS wastewater pumps and although submersib le, other deviations to the sta nda rd design were required, including a different guide rail system, discharge bases, and electrical controls. Within a short period of time, staff recommended a retrofit of the station to Flygt pumps due to a long list of reasons, including incompatibility w ith other District stations, the necessity of excess repairs, and the delayed receipt of parts and repairs. Ever since the 23 rd Pumping Station problems occurred, the District has been making sole source findings and directly purchasing Flygt pumps for t he stations. Plans and specifications for remodeling pumping stations are prepared with notes stating the District will furnish the pumps and other selected materials and equipment. In order to judge the available backup pumping equipment offered in the m arket, staff provides the attached comparison chart where other manufacturers’ equipment is compared to the Godwin units. Godwin units appear to be superior in many of the areas reviewed. Strategic Plan Element & Goal This item adheres to the objective a nd strategy of Strategic Element 1 .0, Infrastructure , which states: “Objective: Our objective is to collect and transport wastewater to meet the needs of existing and future customers
Operations Committee May 21 , 2013 Page 3 of 3 Strategy: We will do this by the careful management of the collection i nfrastructure using prudent planning and maintenance, with financial strategies to maintain sufficient capacity and respond to changing regulatory demands .” Legal Review The Flygt pumps have been determined to be the only product that meets the District ’s needs, as demonstrated in the feature listing in the attached matrix. Flygt pumps are therefore necessary for compatibility with other equipment presently in use in the District’s system in accordance with Public Contract Code Section 2200. Through co rporate purchase, Flygt pumps and Godwin Pumps are now owned by Xylem. These pumps employ similar features and are compatible. Xylem, the owner/the distributor, is the sole source of these pumps. Pursuant to District Operations Code 4.04.120, the Board, in approving this purchase, is making the determination that no competitive market exists and that the best interests of the District will be served by making a negotiated purchase from Xylem Financial Review The total cost to purchase and install four b y -pass pumps is estimated at $300,000. Currently, there is approximately $997,000 available in Project #196. Public Notice Process Copies of this report are on file and will be included with the entire agenda packet for the May 21 , 2013 Operations Commit tee regular meeting at District Headquarters and on District’s website. Alternative Actions 1. Do not approve sole sourcing the permanent by -pass pumps and direct staff to prepare and solicit RFPs. 2. Refer the matter back to staff. Attachments A: Compariso n chart of manufacturer’s equipment
CMSD #196 Backup Pumping May 17, 2013 Subject: Dry -Prime Backup Systems Comparison Flygt / Godwin DBS Features & Benefits Gorman Rupp Thompson ACME Dynamics (Charles King Co) Pioneer Proven Flygt N -Pump hydraulic tec hnology (no cleaning & higher sustained efficiency) for three smaller DBS’s, (handles rags & stringy materials much better than all others). St’d impeller on 12” No - Open impeller (low efficiency No - Closed impeller (clogs easily) No - Screw style (hard on wear plates, some clogging) No - Closed impeller (clogs easily) Standard “Hard Iron” High Chrome impeller material 60 HRC hardness (6x harder, higher abrasion resistance & much longer life) Ductile Iron = 9 HRC Cast Iron < 9 HRC Ductile Iron = 9 HRC Du ctile Iron = 9 HRC Silicon Carbide mechanical seal w/ external oil bath cooling (highest quality seal & runs cooler when not pumping fluids) Mech. Seal lubricated by pumpage Comparable mech. seal NO - SS ring against PTFE Graphite packing No data Compr essed air venture vacuum Dry Priming System (no mechanical vacuum pump parts, indefinite dry priming without damage, faster priming than diaphragm pumps) Comparable venturi system Comparable venturi system Oil flooded sliding vane vacuum pump (mech. parts wear out, Much noisier) Mech. diaphragm vacuum pump (diaphragm wears out much quicker, Much noisier) Priming lift capacity ratings same for all companies NA NA NA NA Critically Silenced system: Heavy 12 & 14 Gauge sheet metal for stronger enclosure Alum inum sheet encl. No specs Varies on case by case basis No specs 2” of Polydamp acoustical sound deadening material (does not absorb moisture or breed bacteria & longer life without breakdown No data Plastic/fiberglass Non standard – case by case basis Foi l covered styrofoam Hospital grade silenced muffler standard Standard muffler Standard muffler Silencer added to muffler for hospital Standard muffler
grade Sound level rating 63 – 68 dBa 63 – 68 dBa 70 dBa Custom built 68 - 70 dBa Engine mount vibratio n dampeners for reduced operating noise Unknown Unknown Unknown Unknown Silenced priming exhaust None None None None Basic enclosure features: (3) Large hinged doors for easy access, easily removable access panels & removable enclosure Similar Similar Similar Similar More Features UL Double walled fuel tank standard No data on design Double wall Single wall tank No Design Data Diesel Interim Tier 4 certified ultra -low emissions engine (California is implementing Interim Tier 4 requirements over t he next 8 months. The small DBS require the IT4 now the large DBS in a couple of months) Tier 3 Tier 3 Tier 3 Tier 3 PrimeGuard Controller -Fully programmable microprocessor engine controller. Touchpad, menu driven for easy programming and data viewing, password protection. Inputs from floats or pressure transducer, automatic & manual control, start/stop & level control, alarm output, mounted in NEMA 4 enclosure Start/Stop control only, no level control Analog relay control w/ electronic upgrade. Start/S top only, no level control Analog w/ manual start/stop Start/Stop control only, no level control Standard Trickle charger or Solar Trickle charge Standard charger No data No data Standard charger Internal lighting for nighttime use No No No No Service C apability: Godwin/Flygt has 2 stocking facilities within 45 miles and a soon to be 3 rd stocking facility within 65 miles of Costa Mesa. All centers have multiple diesel and pump certified technicians. 24/7 emergency response. Not comparable Not comparabl e Not comparable Not comparable