HomeMy WebLinkAboutSDP200500133 Correspondence 2006-02-21John Jordan, Jr.
Jordan Consulting Engineers
2540 Professional Road
Richmond, VA 23235
February 20, 2006
Dear Sirs
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A Growing Idea in Stormwater Filtration.
Plan Review of Filterra®
Peter Jefferson Place 5 &6 Proiect, Albemarle County
Thank you for submitting the partial plans on 17 February 2006 for our review of the
Peter Jefferson Place 5 &6 project.
Filterra® structures FBI (8x6), F132A (6x10), F13213 (6x4), FB20A (10x6), FB20B (6x4),
FB40A (8x6), FB40B (8x6), FB41A (6x12), and FB41B (6x12) were studied for;
• Planned Filterra® box size
• Filterra® contributing drainage area meeting project's regional sizing specification
• Spot elevations (TC) for Filterra® and bypass relief
• Filterra® invert elevations are 3.5' below TC
• Filterra® invert elevations are higher than effluent invert elevations
• The bypass is lower than the Filterra® elevation (spot elevations)
• The grading pattern encourages cross linear flow and not head -on flow
• The Filterra® outlet drain pipe is sized correctly and exits perpendicular to the wall
• For any conflicting structures such as storm drain pipes below Filterra®
• For most efficient placement of Filterra® units
• 4 -6" opening throat detail and standard notes on plans
The plan review concluded that the Filterra® structures listed above were sited and sized
appropriately to treat stormwater to our published specifications.
Operational consistency with these specifications is contingent upon the stormwater units
being installed correctly and according to the plans, as well as regular maintenance being
performed. Installation Help documents will be forwarded to the Buyer at time of order.
The Filterra® Installation, Operation and Maintenance Manual will be forwarded to the
Owner when the units are activated by Americast.
Yours sincerely
Dean Baddorf
Filterra® Stormwater Bioretention Filtration System AK
Manufactured by Americast T: (804) 798 -6068 J�%�f �������
11352 Virginia Precast Road F: (804) 798 -8400 f�] �jLl f�
Ashland, VA 23005 E: design @filterra.com www.filterra.com