HomeMy WebLinkAboutWPO201100089 Certified Engineer's Report 2022-10-25ROUDABUSH, GALE & ASSOCIATES, INC.
July 16, 2021
Albemarle County Engineering Department
ATTN: Mr. Frank Pohl
Albemarle County Department of Community Development
401 McIntire Road
Charlottesville, VA 22902
Re: Charlottesville Self Storage Stormwater Management Facility (WP0201100089)
Mr. Pohl,
Roudabush Gale & Assoc., Inc. completed their as -built survey on the CSS extended detention facility located near
Avon Street on 15JUL21. The original plans for this project date from 2011 and were amended by the County
Engineer early in 2012. The latest amendment is, in essence, a simple elevation adjustment to the approved plan
with minor alterations to the riser system. This is in the form of a Redline Drawing prepared by Roudabush in
discussions with Albemarle County Engineering in June of 2020.
I certify that I have performed an analysis from field collected data, based on accepted engineering methods and I
find that the pond meets or exceeds the overall design requirements for capacity and hydraulic functionality.
Specifically, while the construction of the individual components varies slightly from the approved plan, the
required detention metrics (2 x WQV) appears to exceed the minimum 30 hr release timeframe, and the 100 year
event appears to remain contained without overtopping the facility. Therefore I consider constructed variations to
the approved plan to be insignificant.
Visual pipe inspections, geotechnical reports, easement locations, overall drainage areas, landscaping, aquatic
plantings, management access and other design specifics were excluded from this evaluation.
Jimmy L. Taggart, P.E.