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2013.10.01 Work Session Packet (2nd)CRYSTAL CITY COUNCIL SECOND WORK SESSION AGENDA Tuesday, October 1, 2013 To immediately follow the Regular City Council Meeting Conference Room A Pursuant to due call and notice given in the manner prescribed by Section 3.01 of the City Charter, the second work session of the Crystal City Council was held at p.m. on Tuesday, October 1, 2013 in Conference Room A located at 4141 Douglas Drive, Crystal, Minnesota. I. Attendance Council members Libby Peak Selton Adams Budziszewski Deshler Hoffmann Staff Norris Therres Mathisen Norton Revering Serres Il. Agenda The purpose of the work session is to discuss the following agenda items: • Introduction to Sanitary Sewer Smoke Testing for Inflow and Infiltration — Project #2013-10 • Update on pending personnel litigation (portions of this discussion may be closed pursuant to State law)* * Denotes no supporting information included in the packet. III. Adjournment The work session adjourned at p.m. COUNCIL STAFF REPORT crernf Sanitary Sewer Smoke Testing Project ;CRYSTAL FROM: Tom Mathisen, Public Works Director & City Engineer TO: Anne Norris, City Manager (for October 1 City Council Meeting) DATE: September 26, 2013 RE: Work Session - Inflow and Infiltration Detection Project # 2013-10 The City of Crystal sanitary sewer system is known as a "collection system" due to the fact the City has no treatment plant. Like all other Twin Cities cities, the Crystal system collects sewerage and sends it "downstream" into the Metropolitan Council Environmental Services (MCES) Division system and ultimately to the treatment plant at Pigs Eye on the Mississippi River. Inflow and infiltration (I & 1) plagues all collection systems ever built. This is clear water, made up of both rain and ground water, that gets into the underground sewer pipes, significantly increasing the volume of water that must be treated at the treatment plant. This is of particular importance during wet weather. In Crystal, it is suspected, as in many cities, that a high percentage of the I&I gets into the collection system via footing drains (drain tile) around building foundations. Many of these drains were plumbed directly into the property sewer service during original construction, and are not visible in the basement or any other location. Other I&I entrance points are leaking pipe joints, broken cleanout covers, yard and driveway drains, and manhole covers. One of the most cost effective ways to locate these sources of I&I is through a simple process called "smoke testing." This technique uses a harmless white smoke that is blown down a manhole and subsequently up property sewer services to the building. The smoke will rise out the vent stack on the roof of the building, and will also be seen rising along the outside of foundation walls if there is drain tile connected to the sewer line, or in the grass or street above the location of bad joints or leaking pipes. Funds have been budgeted in 2013 to perform smoke testing in the Winnetka Hills neighborhood (map attached). This area has long been known as a major source of I&I. The best time to do this work is late fall which is typically the driest time of year when soils have pulled away from the foundation allowing any of the white smoke to escape and be observed. This will be the first area ever smoke tested in the city. The information collected will be used to determine the extent of the problem and devise policies and programs to get these illegal connections disconnected from the sanitary sewer system. Total Gravity -27,119' Incl .Winnetka and 32nd Ave Mains 11,441'N of 32nd, W of Winnetka Winnetka N. o 32nd Ave: 1,439' Gravity, 1,811' Force 2,362' on 32nd A 10,707'S of 32nd, W of Winnetka TrM a _ - ERFORMAaNCE COUNTS HURCO's Smoketesting System • Teamed with HURCO's original RIPCORD Smoker Liqui-Smoke " is the safest and cleanest way to smoke test a sewer line. • Utilizing the patented SuperJet"' smoke generator, produces more smoke faster for less dollars - one gallon of Liqui-Smokell-, will last up to 3 hours. • Cost less to operate -- HURCO's RIPCORD Smoker functions operator free, no additional worker required to make srnoke, • Ensure that your smoke testing program is done correctly with HURCO's complete training and support system. 7 �. If any HURCO product does not perform exactly as we claim, let us know within the first 10 days after purchase and we'll refund your money. Training & Support System On line support www.smoketesting.com provides information regarding sewer system smoke testing activities 24 hours a day seven clays a week. Community Awareness Package We also offer a "Public Service Announcement" kit with broadcast ready TV and radio commercials, and print. Training Video and powerpoint training materials are available at www.gethurco.corn. 11111PHIM IRS1e1 in -But s„ .Y s xra z1 � u e TrM a _ - ERFORMAaNCE COUNTS HURCO's Smoketesting System • Teamed with HURCO's original RIPCORD Smoker Liqui-Smoke " is the safest and cleanest way to smoke test a sewer line. • Utilizing the patented SuperJet"' smoke generator, produces more smoke faster for less dollars - one gallon of Liqui-Smokell-, will last up to 3 hours. • Cost less to operate -- HURCO's RIPCORD Smoker functions operator free, no additional worker required to make srnoke, • Ensure that your smoke testing program is done correctly with HURCO's complete training and support system. 7 �. If any HURCO product does not perform exactly as we claim, let us know within the first 10 days after purchase and we'll refund your money. Training & Support System On line support www.smoketesting.com provides information regarding sewer system smoke testing activities 24 hours a day seven clays a week. Community Awareness Package We also offer a "Public Service Announcement" kit with broadcast ready TV and radio commercials, and print. Training Video and powerpoint training materials are available at www.gethurco.corn. 11111PHIM IRS1e1 in -But SMOKE TESTING SEWER LINES Your city Is conducting a smoke test of its sanitary sewer system. Work crews will be in your area starting Month/Day/Year A "SMOKE TEST" survey will assist our inspection crews in locating breaks and defects in our sewer system. The smoke you see coming from the vent stacks on hous- es or holes in the ground is NON-TOXIC, NON -STAIN- ING, HAS NO ODOR, WHITE TO GRAY IN COLOR AND CREATES NO FIRE HAZARD. The smoke should not enter your home unless you have defective plumbing or dried tip drain traps. It is advisable for the home owner to pour a gallon of water into each floor drain prior to our testing. If smoke enters your home there is good reason to assume that dangerous sewer gases may also be entering your home or business. You should evacuate immediately and noti- fy our work crews. If you are not home and discover smoke when you return, please call us at Phone Number. IMPORTANT! If there is any individual in your home or business who has respiratory problems and is immobile, please notify us at Phone Number prior to testing.