HomeMy WebLinkAboutSDP 16-03; CARLSBAD OAKS NORTH LOT 7; BMP CERTIFICATION - BIO-FILTRATION BASINS A - G; 2020-03-11EXCEL ENGINEERING
440 State Place • Escondido, CA 92029
March 11, 2020
City of Carlsbad
Construction Inspection Department
1635 Faraday Ave.
Carlsbad, CA 92008
LEVIN & DENTINO INC D.B A. EXCEL ENGINEERING
(760) 745-8118 • Fax (760) 745-1890
Regarding: BMP Certification for Bio-Filtration Basins A-G of Carlsbad Oaks North Lot 7,
Whip Tail Loop East (Reference Project No. SDP 16-03, Dwg No. 494-2A)
To Whom it May Concern,
This letter is written to certify that the Bio-Filtration Basins, identified as BMP's A-G as detailed
on Drawing No. 494-2A have been constructed in substantial conformance with the approved
plans and that the Basin BMP's are operating as intended.
The basins were inspected and surveyed at several stages during construction over the course of
2019. Please refer to attached survey plats that confirmed the bottom size and depth, the top of
the pea gravel storage layer and finish surface for Basins A-G.
On March 6, 2020, a representative of this firm conducted a final field inspection of the
completed Bio Filtration basins. The purpose of the later inspection was to visually confirm that
the basins were built to plan in regard to the plantings, the inlets, the overflow outlets and the
storage depths. See attached photos to show that the basins have been constructed in substantial
conformance with the approved plans.
Additionally, a Maintenance Agreement is in place and all future maintenance of the BMP
facilities will be completed as stated in that recorded document.
Sincerely,
Robert D. Dentino, PE
3/11/20 3:56 PM V:\17\17080\Survey\Certs\BIOBASIN\Cert#2\Bio Basin Cert-Lot 7.doc
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2020. 3. 8