HomeMy WebLinkAboutAV 91-12; Hill Residence; Administrative Variance (AV) (14)h
PROPERTY DEVLJPMENT ENGINEERS, INC.
1859 S. ESCONDIDO BLVD., ESCONDIDO, CA 92025
JOHN E. VERNON, PRESIDENT, RCE 21121. GE 858
CHARLES W. DAVIS, VICE PRESIDENT. ACE 21719
BARRY L. MUNSON. PROJECT ENGINEER, RCE 40980
FREDERICK F. BRONSON, CHIEF OF SURVEYS. LS 5085
DELBERT C. DANIELS. CHIEF OF MAPPING, LS 3351
May 27, 1993
Mr. Steve Hill
3317 Cadencia St.
Carlsbad, CA 92009
Subject: Engineer's Review of Wall/Roof to ease drainage problem
Site: 3317 Cadencia St., CarlsbaC
* To whom it may concern:
This is to confirm that I have made a field review of reported seepage problems at the subject site. Evidence of under slab
seepage was observed along the base of the easterly property line
retaining wall as well as at other critical locations along the
house footing area. Evidence also is visible on the adjacent lot . uphill from this site. Underground seepage is common in this
area of La Costa hillside (as evidenced by seepage through the road surface and in gutters of /Cadencia nearby).
In a 100 year design storm with rainfall intensity of 4.3
inches per hour, about 27,000 gallons of rain would fall on the
subjec.t roof and approximately 5000 gallons more would fall off
the adjacent roof. This volume is displaced 20' away from the
footings by the roof.
With the persistent seepage problem inside the house adjacent
to the subject roof, it stands to reason that removing 27,000
gallons of storm water from the problem area would be a
beneficial method to mitigate excess moisture in the problen;
area.
In summary, it is my professional opinion that the addition of the 2O'xSO' roof has minimized inundation of storm waters into
aquifers leading to problem seepage areas inside the house.
PROPERTY DEVELOPMENT ENGINEERS, INC.
TEL. (619) 743-8868 FAX (619) 743-7466
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