HomeMy WebLinkAboutCT 98-16; Worthing Subdivision; Tentative Map (CT) (20)Anne Hysong - Worthing Development, CT 98-16 __Page 1
From: Jeremy Riddle
To: Anne Hysong
Date: 4/4/00 9:28AM
Subject: Worthing Development, CT 98-16
I understand there is a difference between the grading quantities listed on the tentative map and the
grading plan. The original TM did not list any import soil. However, now that final grading plans and
engineering calculations have been submitted for city review, it appears that import is required to grade
the site. From our review of the project, the variation in soil exchange it not a result of modifying slopes
and pad elevation from the Tentative Map. The change is only a correction from the engineer-of-work,
since a critical earthwork analysis was not initially performed at the TM stage.
On your memo to me, dated April 3, 2000, you have suggested the applicant be subject to the "Substantial
Conformance Review" process as administered by the Engineering Department. You recommend this
review to verify that grading quantities are warranted to construct the pads at the elevations. Please note
that a review of the grading plans and quantity calculations has been performed through our engineering
plan check process. Based on the criteria which trigger a Substantial Conformance review, a Subtantial
Conformance Review is not warranted. It is our understanding that changes in earthwork quantities are
permitted, provided the quantities are not a result of significant changes in slopes, grades, or pad
elevations.
However, I have performed a cursory review between the grading plan an the Tentative Map and have
determined that the modifications, as they apply to earthwork, grades, and slopes, are as follows:
TM(ft) Grading Plans(ft) Change (feet)
Lot1 162.0 160.0 -2
Lot 2 162.0 162.5 +.5
Lot3 160 160 0
Lot 4 160.5 160.2 -.3
Lot5 160.5 160.5 0
Note that only one pad elevation has increased a total of 6-inches. All others have lowered. There are no
apparent pad elevation, slope, or grade changes which have triggered an unnecessary import of soil. This
has been an apparent oversight by the developer/engineer-of-work. From an engineering standpoint,
these changes are insignificant and are within the decision envelope for City Engineer approval.
In order to resolve this, I wish to provide the developer options on how to address the import issue with
Planning. You may consider requiring the developer submit items for the "Consistency Determination", if it
is warranted through your Planning review. Are additional environmental review needed for the
unaccounted loading trucks? If so, maybe this process should begin now. Maybe we should meet with
the engineer/owner to resolve this issue.
Please let me know your thoughts on how to resolve this. Thanks.
Jeremy L. Riddle
Associate Engineer
City of Carlsbad
Public Works-Engineering
jridd@ci.carlsbad.ca.us