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Bergerson - Caswell Inc. 5115 Industrial Street • Maple Plain, MN 55359 Telephone: 763 - 479 - 3121 Fax: 763 - 479 – 2183 E-Mail: info@BergersonCaswell.com Equal Opportunity Employer/Contractor Bergerson - Caswell Inc. 5115 Industrial Street Maple Plain, MN 55359 (763) 479-3121 Fax: (763) 479-2183 April 28, 2023 CITY OF NEW BRIGHTON Attn: Mr. Jesse Hartman (651) 755‐1529 cell 803 Old Hwy 8 NW (651) 638‐2114 office New Brighton, MN 55112‐2792 (651) 638‐2044 fax RE: WELL PUMP #6 PREVENTATIVE MAINTENANCE INSPECTION 2023 BID Bergerson‐Caswell Inc. Appreciates the opportunity to assist you and your well pump needs. I requested we are providing a bid to perform your Preventative Maintenance Inspection to this installation. You recently informed us that this well is running much hotter than other wells in your community, but during the 2006 inspection we were asked to add a stage to the Peerless pump to generate more head from this well there were plenty of Plant graphs and multiple wells running to attempt to get to targeted flow rates from certain wells and. The modifications were requested by Mr. Les Proper and although adding a stage increased the pump and operating HP we never did anything with the motor because that was already over‐sized. Where my thought are heading is that all your wells that are similar to this were also oversized, for many reasons but one may have been the length of power leads between the control; room and the well houses. The physical size of the wires makes a huge difference, and the voltage drop over these long runs can increase the heat that the motors put off. In addition well #6 has a Yaskawa VHS motor. They are no longer manufactured and I am not sure if they carry the same service factor as a US motors model like many of your other installations. I said we can get together next week and take a look at the facility and heat generated. Below is the current pricing for maintenance inspection and services to well #6, and I provided the current new motor price for a premium efficient inverter rated US Motors model DN11. PROJECT COST: 1) Furnish Labor & Equipment necessary Remove, Inspect, & Reinstall pump unit #6 $11,500.00 2) Deliver & pickup from motor shop, (Replacement with US 150 Hp model DN11 $21,370.00) 3) Performance testing on pump installation & provide results to city $ 750.00 4) Measure the well depth (521’original & 505’ in 2015) $ 100.00 5) Perform video inspection provide DVD, flash drive, and hard copy report to city $ 2,500.00 6) Disinfect well casing with 200 ppm solution of chlorine as performed per city $ 2,000.00 7) Disassemble the pump bowl assembly $ 650.00 8) Rebuild Peerless 12‐LD‐6 stage bowl assembly Replace bowl shaft, bearings, and wear rings $ 5,650.00 9) Provide(2)each 1”x 310’ PVC tubes for level monitoring @ $3.50/ft $ 2,170.00 Additional materials recommended for replacement 10"x 10' T & C drop pipe (16 each) @ $1,375.00 $22,000.00 10”x 10’ tail pipe @ $1,100.00/ea $ 1,100.00 10”x 5’ T & C drop pipe (1 each) @ $980.00/ea $ 980.00 31 each 1.5”x 2.5” rubber line shaft bearings @ $35.00/each $ 1,085.00 Replace Base/Head shaft 1.68”x 65.5” $ 950.00 Recondition Discharge head bearing and packing $ 550.00 Replace 10” Lakewood Bleed‐back flow control valve $ 2,200.00 Replace 1 each 1.68”SS Line shaft sleeve @ $160.00/each (labor included) $ .00 TOTAL PROJECT ESTIMATED AMOUNT $54,185.00 **Note** There is no motor costs included in the amount above Well Information: SWL 204’ Well Casing Depth 446’ Current Well Depth ’ Original Depth 505’ Well Pump Information: Pump setting 310’ Column 10”x 1‐11/16” Pump Peerless 12 LD‐ 6 stage: 900 Gpm @ 466’ TDH If you have any questions, or require additional information, please do not hesitate to contact us and schedule the pump inspection at (612) 479‐3121, or cell (612) 369‐3652. Sincerely; BERGERSON CASWELL INC. Tim D. Berquam Project Manager