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HomeMy WebLinkAboutCorrespondenceErika Bridges From: Stephen A. Maldonado Jr. Sent: Tuesday, June 17, 2014 11:28 AM To: Israel Koite; Doug Wallace Cc: Brian Smith; Fred Surovik; Sean Ray; Erika Bridges; David Coleman Subject: FW: Tie In To Creek Meadows Force Main? Attachments: 140617115152_OOO1.pdf Doug,- Thanks for the heads up. I'm touching base with Izzy on this, but it looks like Castlegate II's contractor should not be tying any forcemains in at this time. This should be a tie-in at a future date when improvements are made to the Creek Meadows lift station as part of phase I improvements. I've attached the design report describing the phasing of improvements. They can also be described as: PHASE ONE Forcemain & Gravity Sewer Improvements o SCHEDULED FISCAL YEAR: 2014 — 2015 o DESCRIPTION: Installation of approximately 1,271 linear feet of 12" gravity sewer line, within the Castlegate 2 Subdivision, to the planned limits of the gravity collection system within this sewer service area. The terminus of this 12" gravity sewer line is near the intersection of Etonbury Avenue and Goodrich Court. From this point an 8" forcemain will be extended approximately 2,100 linear feet to the south side of Greens Prairie Trail near the common subdivision corner of Woodlake and Sweetwater. At this location the 8" forcemain will tie-in to the existing 6" forcemain and the portion of the existing forcemain, which extends to the Castlegate, Section 6, will be temporarily valved shut. PHASE TWO Creek Meadows Lift Station Pump Improvements o SCHEDULED FISCAL YEAR: 2016 —2017 o DESCRIPTION: Upgrade of the Creek Meadows Lift Station pumps (two new pumps), motors, and control panels. o PHASE THREE: Creek Meadows Forcemain & Pump Improvements SCHEDULED FISCAL YEAR: 2017 - 2018 ESTIMATED COST: $225,000.00 0 PHASE THREE Creek Meadows Forcemain & Pump Improvements o SCHEDULED FISCAL YEAR: 2017 — 2018 o DESCRIPTION: Installation of approximately 5,320 linear feet of 8" forcemain that will extend from the Creek Meadows Lift Station to the terminus point of the 8" forcemain described in Phase One improvements. This new 8" forcemain will parallel the existing 6" forcemain and the "old" 6" forcemain, discharging into the Castlegate, Section 6 manhole, will be reconnected. These two forcemains will work in tandem to facility the total required firm pumping rate. Also, a third pump will be installed at the Creek Meadows Lift Station with appropriate motors and controls. Izzy- Please see below. Can y'all verify that the Royder line under construction is plugged/physically not connected at the starting downstream manhole? We need to make sure that no I&I is entering from this construction, or any upstream construction. Once we've approved the development agreement and their contractor is on board, can you schedule a pre -con with you/our guys/contractor to meet on -site to discuss phasing/outages/sequencing? Because of Doug's concerns, I'm thinking we may want to make this future forcemain tie-in during our off-peak demand time(probably Midnight-4am). Thanks, Stephen From: Doug Wallace Sent: Tuesday, June 17, 2014 9:54 AM To: Stephen A. Maldonado Jr.; Brian Smith; Fred Surovik Subject: Tie In To Creek Meadows Force Main? Gents, Pat just called me and let me know that Israel Koite called him to set up a time for an outage at the Creek Meadows lift station so that a contractor can tie into the force main. He told Pat that the outage was anticipated to last 3 to 4 hours, and had no further details. Do y'all know anything about this project? Is this to tie in the other gravity line for Castlegate? There are a few challenges with the Creek Meadows lift station that may affect this. First, the new construction upstream of the Creek Meadows lift station does not seem to be the most secure and tight, since every rain event now causes a sizable spike in the run hours there. I am concerned that a rain event during the outage would cause problems, possibly including a bypass. Second, I am concerned about the level in the lift station backing up enough during the outage that it affects the construction upstream of the station. Third, the wetwell at Creek Meadows is so large that it takes longer to pump it down than most, if not all, of the other lift stations, so getting the wetwell level back to normal after the outage will take a good deal of time. If the outage backs up enough to cause a bypass, it will take a while to get it pumped back down. I guess my real question is: is the construction on the upstream lines far enough along to be able to handle that outage? Knowing more about the downstream project will help us determine when and how we can best plan for this. Thanks. Doug From: Ratan Metcalf [raMn®rmengineecceml Sent: Tuesday. June 17, 20144:46 PM To: Stephen A. MaWom Jr.', Erika Bdtlges Cc: 'Chris Modes' dustyyhllllps52®ymacecpm Subject Creek Meadows -CG2-Coll Staten, TX Fomamain T'ai-In AHachmants: Forcemami Pat Stephen: Per our phone conversation today I'll go with a PF of 3 for the secondary lift station design at Creek Meadows. I've also allached a quick sketch for the forcemein tie in. I would recommend adding a S'valve after the S`XV reducer so that the 8-valve can be closed (6-valve left open) until the Phase 1Impellers are installed or the Phase 2 pumps are installed. I also agree that a coordination meetin& prior to this tie-in, would be highly valuable. Please let me know what works With the city and I'll check with Chris and Dusty. Thanks, Babon A. Metal[ P.E., CF.M. L 3800 SH No. G Share JOBS q]81 P.O. 19253 College Station, a 77842 OM (979) ]64-0]04 Fax. (979) 764 0704 Erika Bridges From: Stephen A. Maldonado Jr. Sent: Tuesday, June 17, 2014 11:28 AM To: Israel Koite; Doug Wallace Cc: Brian Smith; Fred Surovik; Sean Ray; Erika Bridges; David Coleman Subject: FW: Tie In To Creek Meadows Force Main? Attachments: 140617115152_0001. pdf Doug,- Thanks for the heads up. I'm touching base with Izzy on this, but it looks like Castlegate II's contractor should not be tying any forcemains in at this time. This should be a tie-in at a future date when improvements are made to the Creek Meadows lift station as part of phase I improvements. I've attached the design report describing the phasing of improvements. They can also be described as: PHASE ONE Forcemain & Gravity Sewer Improvements o SCHEDULED FISCAL YEAR: 2014 — 2015 o DESCRIPTION: Installation of approximately 1,271 linear feet of 12" gravity sewer line, within the Castlegate 2 Subdivision, to the planned limits of the gravity collection system within this sewer service area. The terminus of this 12" gravity sewer line is near the intersection of Etonbury Avenue and Goodrich Court. From this point an 8" forcemain will be extended approximately 2,100 linear feet to the south side of Greens Prairie Trail near the common subdivision corner of Woodlake and Sweetwater. At this location the 8" forcemain will tie-in to the existing 6" forcemain and the portion of the existing forcemain, which extends to the Castlegate, Section 6, will be temporarily valved shut. • PHASE TWO Creek Meadows Lift Station Pump Improvements o SCHEDULED FISCAL YEAR: 2016 — 2017 o DESCRIPTION: Upgrade of the Creek Meadows Lift Station pumps (two new pumps), motors, and control panels. o PHASE THREE: Creek Meadows Forcemain & Pump Improvements SCHEDULED FISCAL YEAR: 2017 - 2018 ESTIMATED COST: $225,000.00 PHASE THREE Creek Meadows Forcemain & Pump Improvements o SCHEDULED FISCAL YEAR: 2017 — 2018 o DESCRIPTION: Installation of approximately 5,320 linear feet of 8" forcemain that will extend from the Creek Meadows Lift Station to the terminus point of the 8" forcemain described in Phase One improvements. This new 8" forcemain will parallel the existing 6" forcemain and the "old" 6" forcemain, discharging into the Castlegate, Section 6 manhole, will be reconnected. These two forcemains will work in tandem to facility the total required firm pumping rate. Also, a third pump will be installed at the Creek Meadows Lift Station with appropriate motors and controls. Izzy- Please see below. Can y'all verify that the Royder line under construction is plugged/physically not connected at the starting downstream manhole? We need to make sure that no I&I is entering from this construction, or any upstream construction. Once we've approved the development agreement and their contractor is on board, can you schedule a pre -con with you/our guys/contractor to meet on -site to discuss phasing/outages/sequencing? Because of Doug's concerns, I'm thinking we may want to make this future forcemain tie-in during our off-peak demand time(probably Midnight-4am). Thanks, Stephen From: Doug Wallace Sent: Tuesday, June 17, 2014 9:54 AM To: Stephen A. Maldonado Jr.; Brian Smith; Fred Surovik Subject: Tie In To Creek Meadows Force Main? Gents, Pat just called me and let me know that Israel Koite called him to set up a time for an outage at the Creek Meadows lift station so that a contractor can tie into the force main. He told Pat that the outage was anticipated to last 3 to 4 hours, and had no further details. Do y'all know anything about this project? Is this to tie in the other gravity line for Castlegate? There are a few challenges with the Creek Meadows lift station that may affect this. First, the new construction upstream of the Creek Meadows lift station does not seem to be the most secure and tight, since every rain event now causes a sizable spike in the run hours there. I am concerned that a rain event during the outage would cause problems, possibly including a bypass. Second, I am concerned about the level in the lift station backing up enough during the outage that it affects the construction upstream of the station. Third, the wetwell at Creek Meadows is so large that it takes longer to pump it down than most, if not all, of the other lift stations, so getting the wetwell level back to normal after the outage will take a good deal of time. If the outage backs up enough to cause a bypass, it will take a while to get it pumped back down. I guess my real question is: is the construction on the upstream lines far enough along to be able to handle that outage? Knowing more about the downstream project will help us determine when and how we can best plan for this. Thanks. Doug