HomeMy WebLinkAboutCDP 15-25; 4394 Yuki Lane; ADDENDUM 1 UPDATED GEOTECHNICAL REPORT ADDENDUM 2; 2016-01-29GJNEERING
DESIGN GROUP
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2121 Montiel Road, San Marcos, California 92069 ·(7so) 839-7302 ·Fax: (760) 480-7477 • www.designgroupca.com
Date: January 29, 2016
To:
Re:
Pacific Beach 2014, Ltd.
c/o San Dieguito Development
Attn: Ted Montag
11 06 Second St PMB 255
Encinitas, CA 92024
p: 760.635.7633
e: tedmontag3@msn.com
JUN 1 5 2016
Proposed new residence to be located at Lot 2 Yuki Lane, Carlsbad, California
Subject: Addendum No. 1 -Updated Geotechnical Report
COP 15-25 -4394 Yuki Lane
Ref:
1. , Proposed New Single Family Residence to be
California," prepared by Engineering Design Group, dated
We have provided the following addendum in response to the City of Carlsbad Comments.
1. In the area along the north side of the house where the paved walkway provides a 2.5 feet
horizontal distance to the localized low spot for drainage we recommend the area maintain
sufficient distance below finish floors, limit pervious surfaces and provide for sufficient drainage
devices to not allow runoff to pond adjacent to new foundations and improvements.
2. Erosional rilling, surficial weathering are anticipated and the 18 inch debris fence should be
constructed atop the proposed retaining wall at the toe of the 2:1 graded slope. The retaining wall
shall be detailed with sufficient drainage facilities to not allow water to pond behind the wall.
3. As noted in Section 7.3.g, footings adjacent to slopes shall maintain a minimum horizontal
setback of 10 feet in competent compacted material. We·anticipate footings will be deepened in
areas where the proposed structure is located near the top of the slope. Deepening is anticipated
to extend to approximately 4 -5 feet deep, depending on actual conditions in the field. Foundation
excavations shall be inspected by a representative of Engineering Design Group prior to the
placement of steel, form boards and removal of excavation equipment.
NEW RESIDENCE
4934 Yuki Lane, carlsbad, California
ENGINEERING DESIGN GROUP
GEOTECHNICAL, CIVIL, STRUCTURAL CONSULTANTS
Page No.1
Job No. 155513-1
4. Regarding general red lined comments on the BMP plan, we recommend the following:
a. The bioretention area on Lot 2 is located near the existing retaining wall. We recommend
for walls over three feet an unlined bioretention area be located a minimum of 5
horizontal feet from the top of the wall or the height of the wall, whichever is greater.
Prior to the installation of an unlined bioretention area the functionality of backdrain
system of a downstream wall shall be verified.
If you have any questions with respect to this letter please do not hesitate to call our office.
Respectfully Submitted,
ENGINEERING DESIGN GROUP
Steven Norris
California GE #2590
NEW RESIDENCE
4934 Yuki Lane, Carlsbad, California
ENGINEERING DESIGN GROUP
GEOTECHNICAL, CIVIL, STRUCTURAL CONSULTANTS
Page No.2
Job No. 155513-1
ENGli'\fEERING
DESIGN GROUP
---
2121 Montiel Road, San Marcos, California 92069 • (760) 839-7302 • Fax: (760) 480-7477 • www.designgroupca.com
Date: June 13, 2016
To:
Re:
Pacific Beach 2014, Ltd.
c/o San Dieguito Development
Attn: Ted Montag
1106 Second St PMB 255
Encinitas, CA 92024
p: 760.635.7633
e: tedmontag3@msn.com
JUN l 5 2016
Proposed new residence to be located at Lot 2 Yuki Lane, Carlsbad, California
Subject: Addendum No. 2
COP 15-25 -4394 Yuki Lane
Ref:
1. Addendum No. 1 -Updated Geotechnical Report, prepared by Engineering Design Group, dated
January 29, 2015.
2. "Updated Geotechnical Recommendations, Proposed New Single Family Residence to be
located at Lot 2, Yuki Lane, Carlsbad, California," prepared by Engineering Design Group, dated
September 3, 2015.
At the request of the City of Carlsbad we provide the following recommendations with respect to the
installation of pervious concrete driveways at the above referenced site.
1. Specific constraints and details of pervious concrete in driveway area should be per the specific
manufacturer and pervious pavement industry standards and recommendations, including edge
restraints, minimum bedding specifications, base and subgrade requirements, installation
tolerances, drainage, etc.
2. As pervious concrete relates to the geotechnical aspects of the project we provide the following
recommendations:
NEW RESIDENCE
a. We recommend subgrade be compacted to 95% minimum compaction in the area of new
pervious concrete driveways.
b. Where runoff and stormwater is directed over permeable pavement and water is
anticipated to flow through into an aggregate base, sub-drains and/or underdrains to be
installed. Construction detailing to be reviewed prior to installation.
c. The specific recommendations of the pervious pavement manufacturer may supersede
the recommendations herein. Specific manufacturer recommendations shall be included
in any pervious concrete detailing.
4930 Yuki Lane, Carlsbad, California
Page No.1
Job No. 155513-1
ENGINEERING DESIGN GROUP
GEOTECHNICAL, CIVIL, STRUCTURAL CONSULTANTS
d. All other recommendations regarding biofiltration, per References 1 & 2 above, shall be
adhered.
If you have any questions with respect to this addendum, please do not hesitate to call our office.
Respectfully Submitted,
ENGINEERING DESIGN GROUP
Steven Norris
California GE #2590
Erin Rist
California RCE 65122
NEW RESIDENCE
4930 Yuki lane, Carlsbad, California
ENGINEERING DESIGN GROUP
GEOTECHNICAL, CIVIL, STRUCTURAL CONSULTANTS
Page No.2
Job No. 155513-1