Oakland Sewer Department Inflow Infiltration Study Update Oak/High Street September 29-30 Storm Event (2015) 90.0 0.2 9/29/2015 23:15 9/29/2015 22:30 9/29/2015 21:45 9/29/2015 21:00 9/29/2015 20:15 9/29/2015 19:30 9/29/2015 18:45 9/29/2015 18:00 9/29/2015 17:15 9/29/2015 16:30 9/29/2015 15:45 9/29/2015 15:00 9/29/2015 14:15 9/29/2015 13:30 9/29/2015 12:45 9/29/2015 12:00 9/29/2015 11:15 9/29/2015 10:30 9/29/2015 9:45 9/29/2015 9:00 9/29/2015 8:15 9/29/2015 7:30 9/29/2015 6:45 9/29/2015 6:00 9/29/2015 5:15 9/29/2015 4:30 9/29/2015 3:45 9/29/2015 3:00 9/29/2015 2:15 9/29/2015 1:30 9/29/2015 0:45 9/29/2015 0:00 1 0 30.0 Poly. (Oak Street Flow (gpm)) 50.0 40.0 Poly. (High Street Flow (gpm)) 0.05 Oak Street Flow (gpm) 0.1 60.0 Precipitation 70.0 Total daily precipitation of 1.42 inches 0.15 80.0 0.25 110.0 100.0 High Street Flow (gpm) Oak/High Street September 29-30 Storm Event (2015) 9/30/2015 23:15 9/30/2015 22:30 9/30/2015 21:45 9/30/2015 21:00 9/30/2015 20:15 9/30/2015 19:30 9/30/2015 18:45 9/30/2015 18:00 9/30/2015 17:15 9/30/2015 16:30 9/30/2015 15:45 9/30/2015 15:00 9/30/2015 14:15 9/30/2015 13:30 9/30/2015 12:45 9/30/2015 12:00 9/30/2015 11:15 9/30/2015 10:30 9/30/2015 9:45 9/30/2015 9:00 9/30/2015 8:15 9/30/2015 7:30 9/30/2015 6:45 9/30/2015 6:00 9/30/2015 5:15 9/30/2015 4:30 9/30/2015 3:45 9/30/2015 3:00 9/30/2015 2:15 9/30/2015 1:30 9/30/2015 0:45 9/30/2015 0:00 2 0 0.0 0.05 50.0 0.25 300.0 0.3 350.0 0.2 200.0 Precipitation 150.0 High Street Flow 100.0 Oak Street Flow 0.1 Total daily precipitation of 4.11 inches 250.0 0.15 Backup from Lower Oak Street 10/6/2015 23:15 10/6/2015 22:30 10/6/2015 21:45 10/6/2015 21:00 10/6/2015 20:15 10/6/2015 19:30 10/6/2015 18:45 10/6/2015 18:00 10/6/2015 17:15 10/6/2015 16:30 10/6/2015 15:45 10/6/2015 15:00 10/6/2015 14:15 10/6/2015 13:30 10/6/2015 12:45 10/6/2015 12:00 10/6/2015 11:15 10/6/2015 10:30 10/6/2015 9:45 10/6/2015 9:00 10/6/2015 8:15 10/6/2015 7:30 10/6/2015 6:45 10/6/2015 6:00 10/6/2015 5:15 10/6/2015 4:30 10/6/2015 3:45 10/6/2015 3:00 10/6/2015 2:15 10/6/2015 1:30 10/6/2015 0:45 10/6/2015 0:00 2 0 0.0 Precipitation High Street Flow Poly. (Oak Street Flow) 200.0 100.0 Poly. (High Street Flow) 0.05 Oak Street Flow 0.1 300.0 0.15 400.0 0.25 700.0 600.0 0.2 500.0 Lower Oak Street (cont.) 10/7/2015 23:15 10/7/2015 22:30 10/7/2015 21:45 10/7/2015 21:00 10/7/2015 20:15 10/7/2015 19:30 10/7/2015 18:45 10/7/2015 18:00 10/7/2015 17:15 10/7/2015 16:30 10/7/2015 15:45 10/7/2015 15:00 10/7/2015 14:15 10/7/2015 13:30 10/7/2015 12:45 10/7/2015 12:00 10/7/2015 11:15 10/7/2015 10:30 10/7/2015 9:45 10/7/2015 9:00 10/7/2015 8:15 10/7/2015 7:30 10/7/2015 6:45 10/7/2015 6:00 10/7/2015 5:15 10/7/2015 4:30 10/7/2015 3:45 10/7/2015 3:00 10/7/2015 2:15 10/7/2015 1:30 10/7/2015 0:45 10/7/2015 0:00 3 500.0 0 0.0 Oak Street Flow High Street Flow 200.0 0.05 100.0 Precipitation 0.1 300.0 0.15 400.0 This vertical drop shows For both High Street and Oak Street meters, indicating A backup on Lower Oak St That released instantaneously 0.25 700.0 600.0 0.2 Main Street Spring Runoff Flow 2016 3/18/2016 23:15 3/18/2016 22:30 3/18/2016 21:45 3/18/2016 21:00 3/18/2016 20:15 3/18/2016 19:30 3/18/2016 18:45 3/18/2016 18:00 3/18/2016 17:15 3/18/2016 16:30 3/18/2016 15:45 3/18/2016 15:00 3/18/2016 14:15 3/18/2016 13:30 3/18/2016 12:45 3/18/2016 12:00 3/18/2016 11:15 3/18/2016 10:30 3/18/2016 9:45 3/18/2016 9:00 3/18/2016 8:15 3/18/2016 7:30 3/18/2016 6:45 3/18/2016 6:00 3/18/2016 5:15 3/18/2016 4:30 3/18/2016 3:45 3/18/2016 3:00 3/18/2016 2:15 3/18/2016 1:30 3/18/2016 0:45 3/18/2016 0:00 5 0 200.0 Measured Main St Flow (gpm) 220.0 210.0 Measured Water St Level (in.) 0.05 Precipitation (in.) 0.1 Calculated Main St Flow (gpm) 230.0 0.15 250.0 0.25 280.0 270.0 260.0 0.2 240.0 Oak/High Street Spring Runoff Flow 2016 3/18/2016 23:15 3/18/2016 22:30 3/18/2016 21:45 3/18/2016 21:00 3/18/2016 20:15 3/18/2016 19:30 3/18/2016 18:45 3/18/2016 18:00 3/18/2016 17:15 3/18/2016 16:30 3/18/2016 15:45 3/18/2016 15:00 3/18/2016 14:15 3/18/2016 13:30 3/18/2016 12:45 3/18/2016 12:00 3/18/2016 11:15 3/18/2016 10:30 3/18/2016 9:45 3/18/2016 9:00 3/18/2016 8:15 3/18/2016 7:30 3/18/2016 6:45 3/18/2016 6:00 3/18/2016 5:15 3/18/2016 4:30 3/18/2016 3:45 3/18/2016 3:00 3/18/2016 2:15 3/18/2016 1:30 3/18/2016 0:45 3/18/2016 0:00 5 0 30.0 0.05 50.0 0.2 130.0 0.25 150.0 110.0 0.15 90.0 Meas. Oak Street Flow (gpm) 70.0 Precipitation (in.) 0.1 Meas. High St Flow (gpm) Main Street Dry Flow Period 2016 8/18/2016 23:15 8/18/2016 22:30 8/18/2016 21:45 8/18/2016 21:00 8/18/2016 20:15 8/18/2016 19:30 8/18/2016 18:45 8/18/2016 18:00 8/18/2016 17:15 8/18/2016 16:30 8/18/2016 15:45 8/18/2016 15:00 8/18/2016 14:15 8/18/2016 13:30 8/18/2016 12:45 8/18/2016 12:00 8/18/2016 11:15 8/18/2016 10:30 8/18/2016 9:45 8/18/2016 9:00 8/18/2016 8:15 8/18/2016 7:30 8/18/2016 6:45 8/18/2016 6:00 8/18/2016 5:15 8/18/2016 4:30 8/18/2016 3:45 8/18/2016 3:00 8/18/2016 2:15 8/18/2016 1:30 8/18/2016 0:45 8/18/2016 0:00 4 0 25 0.1 Precipitation (in.) 85 0.15 125 0.25 185 165 145 0.2 105 Measured Main St Flow (gpm) 65 0.05 45 Oak/High Street Dry Flow Period 2016 0.1 8/18/2016 23:15 8/18/2016 22:30 8/18/2016 21:45 8/18/2016 21:00 8/18/2016 20:15 8/18/2016 19:30 8/18/2016 18:45 8/18/2016 18:00 8/18/2016 17:15 8/18/2016 16:30 8/18/2016 15:45 8/18/2016 15:00 8/18/2016 14:15 8/18/2016 13:30 8/18/2016 12:45 8/18/2016 12:00 8/18/2016 11:15 8/18/2016 10:30 8/18/2016 9:45 8/18/2016 9:00 8/18/2016 8:15 8/18/2016 7:30 8/18/2016 6:45 8/18/2016 6:00 8/18/2016 5:15 8/18/2016 4:30 8/18/2016 3:45 8/18/2016 3:00 8/18/2016 2:15 8/18/2016 1:30 8/18/2016 0:45 8/18/2016 0:00 4 0 0.0 Meas. Oak Street Flow (gpm) 60.0 20.0 Precipitation (in.) 80.0 Poly. (Meas. Oak Street Flow (gpm)) 0.05 40.0 0.2 140.0 0.25 180.0 160.0 120.0 100.0 0.15 Meas. High St Flow (gpm) Video Inspection of Lower Oak Street Section from Manhole north of Fabian Oil to Manhole at the intersection with Heath Street Cleaning of Lower Oak Street Section . 743.7 - waterv1lle Sauera-e D1str1ct .- i 5.2 s, sand and . - of pipe i: 796 ?bar - 2816-87-11 11 $5 10 8.88 Ft/min 854 ?bar 92.84 Ft - .V Lower Oak Street Broken Pipe Section with Previous Repair Haterville Sederage District yo nigg??gglw ?1c Pipe Material change from Clay to PVC Pipe NOT LABLED - i? Haterville Sewerage District 882 ?bar 2816-87-12 14:86:88 58.25 Ft/min 866 ?bar Ft s: I 0? I Pipe Material Change from PVC to Cast Iron (believed to be at granite box culvert crossing 803 ?bar 2016-87-12 14:87:02 63.96 Ft/min 864 ?bar 189.85 Ft Shows open joint with stone backfill present in joint - . ne backfill showing poor joint Abandoned Sewer Service not capped. Stone showing for backfill .- Ia- Naterville Sewer-89 La . ?9 801 nbar? 2016-87-12 14:10:23 0.00 Ft/min 866 ?barv 225.KrosoftExc ., . ?Broken joint leak point NOT LABLED - (2)_0000 Naterville Sewerage 799 ?bar 2816-87-12 14 13 29 8.29 Ft/min 869 ?bar 258.osoftEx - - :m5.? ha.? a I (9 ESI I #31: 11/3/2015 . Lower Oak Street Section Conclusions  Pipe section is a contributor of Inflow & Infiltration.  Pipe section recommended for lining ..  Currently obtaining prices to have this section lined from manhole to manhole. Oak Street from Manhole at intersection with Sawtelle Road to Manhole near the High School Entrance Broken Pipe Section with roots throughout 619 ?bar 2816-18-31 fE/min 334 ?bar 193.05 Ft - Major Root Issues along Pipe run . Haterville Sauera-e District 614 ?bar . 2816-18-31 14:88:56 42.31 Ft/min 839 ?bar 153.29 Ft Oak Street Section Conclusions  Pipe section is a contributor of Inflow & Infiltration.  Pipe section is priority due to the collapsed pipe section.  Pipe section recommended for lining immediately to avoid potential for sewer backup issues.  Currently obtaining prices to have this section lined from manhole to manhole. Water Street Sewer Upgrade • In 2015/2016 cleaned and video recorded sewer main along full length of Water Street. • Found a significant amount of debris in main in the vicinity of abandoned sewer connection near Grove Street. • Plan to eliminate abandoned cross country main connection to sewer system in November 2016 Water Street Sewer Upgrade • Review MDOT Drainage Connection Agreement for connection of abandoned Sewer Main to MDOT catch basin • Agreement required due to unknown volume of flow coming from abandoned pipe. – If MDOT drainage system overloaded due to abandoned pipe, Town will work with MDOT on resolution. – Town agrees to test water to verify groundwater or surface water only. Water Street Sewer Upgrade • Should overloaded condition occur in MDOT storm water system due to connection – Town/MDOT may need to upgrade pipe size of drainage system downstream of connection, or – Town/MDOT may need to install another outlet from the overloaded catch basin to daylight Fairfield Street Cleaning and Video Work in 2016 Cleaning Process on Fairfield Street Rocks, bricks, sand and debris full length of pipe section ?a 784 ~2avi.._ 201e-10-Grease buildup in sewer main between Fairfield Street and Main Pump Station Grease build-up on sides of the existing sewer main prior to plant Fairfield Street Manhole to be repaired likely I&I Source Manhole is located in drainage low spot, open areas below rim allow water runoff entry