HomeMy WebLinkAboutSDP 16-18; CARLSBAD RACEWAY LOT 12; BIOTENTION BASINS BMP CERTIFICATION; 2019-03-29EXCEL ENGINEERING
CORPORA TE: 440 State Place • Escondido, CA 92029
(760)745-8118 •Fax 745-8134
March 29, 2019
RE: Certification of Bio Basin Grades (BMPs A, B, C, D)
Precise Grading Plans for Carlsbad Raceway Lot 12
City of Carlsbad Drawing No. 501-2A, Project No. SOP 16-18
To Whom it May Concern:
LEVIN & DENTINO INC. D.B.A. EXCEL ENGINEERING
Excel Engineering perfonned several field surveys relating to the five installed
bioretention basins on the above-referenced project. The field surveys consisted of the
following:
-Basin bottom excavation (February 6, April 4, June 16, 2018)
-Top ofrockplacernent (December 19, 2017 & January 3 & 16, 2018)
-Finish surface and pipe works (August 10, 2018)
-Final Basin installation with landscape complete (January 1, 2019)
In all cases, the bioretention basins' grades were found to be constructed in substantial
conformance with the approved grading plans for the City of Carlsbad.
[f you have questions or need any additional information, please do not hesitate to call our
corporate office.
Sincerely,
/r~
Robert D. Dentino, PE
V:\16\1602.4\,Sur,ay\Stake\CERT\8IOBASIN\19.03.29 LOT12 blobaslns certs Final.doc
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