HomeMy WebLinkAboutMS 06-03; OZAKI PARCEL 2; HYDROLOGY EVALUATION LETTER; 2006-02-23February 23, 2006
City of Carlsbad
Engineering Department
RE: HYDROLOGY EVALUATION - THE OZAKI TPM
1645 CHESTNUT AVENUE - CITY OF CARLSBAD
Please allow this letter to serve as the hydrology study for the subject project. The
subject Tentative Parcel Map (TPM) is a proposal to divide one existing legal lot into a
total of two lots, thereby creating one new lot. There is an existing residence and
detached garage on the property at this time with no plans to build an additional residence
on the new lot at this time. The applicant is requesting the lot split for the future, at
which time building plans, and grading plans if required, will be submitted.
Based on numerous site visits and the aerial topography map prepared by Toviill, Inc., it
is our professional opinion that there is very little off-site drainage entering onto this
project. Therefore, the only drainage affecting this Tentative Parcel Map (TPM) is the
lot(s) themselves, which is about one-half acre. Based on the County of San Diego
Design and Procedure Manual and assuming urban single-family residential conditions,
we would conservatively predict no more than 1 to 2 cfs in a 100-year storm, for the
entire project.
It is our professional opinion that typical drainage devises utilized for single family
residential construction, i.e., sheet flow, landscape areas, possible area drains, etc. will be
more than adequate to handle the anticipated drainage for this development. In addition,
appropriate BMPs, both during and after construction, will be implemented to the City's
satisfaction.
As Engineer of Work for this application, we respectively request your acceptance of this
hydrology evaluation. Should you have any questions or comments, please feel free to
contact t3.icoffice or resp9nd, as such, with plan check comments.
Si
GINF,ERING
Douglas E Logan, R.C.E. 39726
Principal
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