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Home My WebLink About2012-12 MRLS L-385; WBO; ARGOSY COMPLEX PRESSURE RELIEF WELLS; ---------- Forwarded message ---------- From: Jason Davis <jdavis@affinis.us> Date: Fri, Dec 7, 2012 at 9:05 AM Subject: RE: MRLS L-385; WBO; ARGOSY COMPLEX PRESSURE RELIEF WELLS; LEVEE STATIONS QL 183+00 thru QL 187+00; COE RECORD NO. 2012-116; REQUEST FOR ADDITIONAL INFORMATION (UNCLASSIFIED) To: "Detrick, Charles W NWK" <Charles.W.Detrick@usace.army.mil> Cc: "Harmon, Brandon T NWK" <Brandon.T.Harmon@usace.army.mil>, Ben Drake <hbentondrake@sbcglobal.net>, Rick Worrel <rworrel@affinis.us>, Blake Madden <bmadden@affinis.us>, "mmcginness@mcginness-shaw.com" <mmcginness@mcginness-shaw.com>, "Greg Personelli (greg.personelli@pngaming.com)" <greg.personelli@pngaming.com>, Brent Miles <bmiles@northpointkc.com>, "Don Coleman (donpcoleman@yahoo.com)" <donpcoleman@yahoo.com>, "jeffg@completehomeconcepts.com" <jeffg@completehomeconcepts.com>, "Richie Benninghoven (rcb@usckc.com)" <rcb@usckc.com>, Ron Super <rsuper@kc.rr.com> Charlie, I have attached the submittal USACE requested for additional information from the screen manufacturer and the testing company. Al Smith (Johnson Screens) believes that the filter media requires rearrangement and recommends jetting. In order to perform this we have a few options. 1. Jetting concurrently with pumping 2. "Bore blasting" - procedure patent by Layne 3. Compressed nitrogen (impulse generation) Speaking with Greg Sloan from Layne there are options for maintaining the relief wells if needed in the future. 1. Most brushes would collapse enough to pass the anomaly to perform scrubbing of the screen. 2. A tight fitting surge block would likely not pass the anomaly. However, a smaller surge block would provide agitation and the ability to dissipate energy and chemical treatments into the filter media. 3. Jetting could provide a mechanism for cleaning of the screens and redevelopment. Feel free to contact me with any questions or comments. Thanks, Jason Jason D. Davis, P.E., Vice President, Federal Services Affinis Corp | BUILDING LONG-LASTING RELATIONSHIPS | www.affinis.us Named a "Best Firm to Work for in Civil Engineering" by CE News - 2007, 2008, 2010 & 2012 7401 W. 129th Street, Suite 110 | Overland Park, KS 66213 Direct: 913-239-1106 | Mobile: 913-634-6278 | Fax: 913-239-1111 | Toll-free: 1-877-527-5468 Follow us on: and This email and any files transmitted with it are confidential and are solely intended for the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the email to the recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. If you have received this email in error, please reply to sender and take the steps necessary to delete this message completely from your computer system. Thank you. -----Original Message----- From: Detrick, Charles W NWK [mailto:Charles.W.Detrick@usace.army.mil] Sent: Thursday, July 19, 2012 2:30 PM To: Ben Drake; Jason Davis Cc: Harmon, Brandon T NWK Subject: MRLS L-385; WBO; ARGOSY COMPLEX PRESSURE RELIEF WELLS; LEVEE STATIONS QL 183+00 thru QL 187+00; COE RECORD NO. 2012-116; REQUEST FOR ADDITIONAL INFORMATION (UNCLASSIFIED) Classification: UNCLASSIFIED Caveats: NONE Jason and Ben, Reference the subject above. This email is a follow-up to the June 28th submittal from RQLD and the July 16th teleconference with the two of you, Brandon Harmon (ED-GG), and me. We have reviewed the submittal and the recommendations presented in the June 28th Affinnis correspondence. Our comments and request for additional information are as follows: 1. There are two issues with Argosy Pressure Relief Wells 9 and 11. The primary issue is the deformed screen since it may reduce the screen structural integrity, allow filter and foundation materials to enter the well assembly, or prevent equipment/devices (pump, surge block) from entering the well assembly. The second issue is the reduced specific capacity. 2. The well screen manufacturer's recommendations of the current condition should be submitted and should address both the structural integrity and the screen performance during a flood event. 3. The 2010 test pump rates were almost double the 2005 test rates. Increasing the rates may have pulled foundation material into the filter and reduced the filter hydraulic conductivity. The reasoning behind increasing the pump rates should be submitted as well as the testing company's comments with respect to increased pump rates clogging the filter. 4. The Argosy Pressure Relief Wells were installed as a condition to the Argosy Complex parking garage encroachment. The pressure relief wells are not necessary for the MRLS L-385 performance but may be necessary for a flood fight should a seepage problem develop during a flood event. It is in everyone's best interest to verify the pressure relief well structural integrity and capacity during scheduled inspections and testing. Anomalies, such as reduced specific capacity, need to be understood to ensure performance when/if the pressure relief wells are needed during a flood fight. The testing company should provide comments to the observations of reduced specific capacity and screen deformation. 5. The submittal should include future pump, development equipment (surge block), and devices access recommendations. 6. The submittal should include testing findings, observations, and recommendations addressing such observations as the accumulated material within the pressure relief wells and possible rejuvenation techniques that may improve the specific capacity. These recommendations should account for the deformed screen as a hindrance to access. Once this additional information is received, this office will complete a review and provide our comments or finding of no comment within signed correspondence. Questions or concerns, don't hesitate to email or telephone. Thank you, Charles W. Detrick CENWK-ED-GD 816-389-3605 Classification: UNCLASSIFIED Caveats: NONE ######################################################################## ############# Scanned by MailMarshal - Marshal's comprehensive email content security solution. Download a free evaluation of MailMarshal at www.marshal.com ######################################################################## #############