HomeMy WebLinkAbout2843 Adeline Drive - ResolutionRESOLUTION NO. 39-2009
RESOLUTION OF THE CITY COUNCIL OF THE CITY OF BURLINGAME, DENYING THE APPEAL OF
ART AND KEALANI LABRIE AND UPHOLDING THE PLANNING COMMISSION'S MARCH 9, 2009,
APPROVAL OF THE APPLICATION FOR DESIGN REVIEW, HILLSIDE AREA CONSTRUCTION
PERMIT, VARIANCE FOR HEIGHT AND SPECIAL PERMIT FOR AN ATTACHED GARAGE FOR A
NEW, THREE AND ONE HALF STORY SINGLE FAMILY DWELLING AT 2843 ADELINE DRIVE, ON
PROPERTY SITUATED WITHIN A SINGLE-FAMILY RESIDENTIAL (R-1) ZONE
RESOLVED, BY THE CITY COUNCIL OF THE CITY OF BURLINGAME THAT:
WHEREAS, on March 9, 2009, the Planning Commission approved an application for Design
Review, Hillside Area Construction Permit, Variance for height and Special Permit for an attached
garage for a new, three and a half story single family dwelling located at 2843 Adeline Drive (APN: 027-
093-310), owned by Denham LLC, 851 Burlway Road Suite 710, Burlingame, California, 94010; and
WHEREAS, the Planning Commission's March 9, 2009 approval was appealed by Art and
Kealani Labrie, and the City Council conducted a public hearing on the appeal on April 20, 2009;
denying the appeal and upholding the Planning Commission's approval.
NOW, THEREFORE, IT IS RESOLVED AND DETERMINED BY THE CITY COUNCIL THAT:
1. The City Council hereby denies the appeal and upholds the Planning--Commission's-March-9,
2009 approval of the application for Design Review, Hillside Area Construction Permit, Variance
for height and Special Permit for attached garage, based upon the Council's finding that the new
three and a half story single family dwelling and attached garage is well -designed, is consistent
with the mass and bulk in the neighborhood, that the architectural style is consistent throughout
the house and that it will improve the character of the block and enhance the design of the
community. Additional findings for the City Council's action are as set forth in the minutes and
recording of the City Council meeting of April 20, 2009.
2. On the basis of the Initial Study and the documents submitted and reviewed, and comments
received and addressed by this council, it is hereby found that there is no substantial evidence
that the project set forth above will have a significant effect on the environment, and categorical
exemption, per CEQA Article 19, Section: 15303 (a), which states that construction of a limited
number of new, small facilities or structures including one single family residence or a second
dwelling unit in a residential zone is exempt from environmental review. In urbanized areas, up to
three single-family residences maybe constructed or converted under this exemption.
3. Said Design Review, Hillside Area Construction Permit, Variance and Special Permit are
approved subject to the conditions set forth in Exhibit "A" attached hereto.
4. It is further directed that a certified copy of this resolution be recorded in the official records of the
County of San Mateo.
^ G
Mayor
L4 S
t (LL F
V�;`' i 'G09
1
I, Mary Ellen Kearney, City Clerk of the City of Burlingame, do hereby certify that the foregoing
resolution was introduced and adopted at a regular meeting of the City Council held on the 20th day of
April, 2009 by the following vote:
AYES: COUNCILMEMBERS: DEAL, KEIGHRAN, NAGEL, BAYLOCK, WMAHONY
NOES: COUNCILMEMBERS: NONE
ABSENT: COUNCILMEMBERS: NONE
City Cler�C
MAY -- 6 Z009 2
f
EXHIBIT A
CONDITIONS OF APPROVAL — 2843 ADELINE DRIVE
DESIGN REVIEW, HILLSIDE AREA CONSTRUCTION PERMIT, HEIGHT VARIANCE AND
SPECIAL PERMIT
that the project shall be built as shown on the plans submitted to the Planning Division date
stamped January 27, 2009, sheets A02 through A09, and date stamped December 2, 2008,
sheets A00 through A01c, A10 through A16 and Preliminary Grading and Drainage Plan;
2. that the deck lying adjacent to bedrooms 2 and 3 shall be reduced in size to one-half of the depth
and one-half of the width, as shown on the approved plans;
3. that tree protection measures shall be implemented for the Oak tree across the street from the
property (near 2838 Adeline Drive) during project construction; to the satisfaction of the City
Arborist;
4. that the planting plan for the trees to be located along the left side of the structure shall be
presented to the Planning Commission as an FYI, prior to issuance of a Building Permit;
5. ghat -any chanty es to buildin materials, exterior finishes, windows, architectural features, roof
height or pitch, and amount or type of hardscape materials shall be subject -to Planing -Division
or Planning Commission review (FYI or amendment to be determined by Planning staff);
6. that any changes to the size or envelope of the basement, first or second floors, or garage, which
would include adding or enlarging a dormer(s), shall require an amendment to this permit;
7. that if the structure is demolished or the envelope changed at a later date the Special Permit and
Variance as well as any other exceptions to the code granted here will become void;
8. that the property owner shall be responsible for implementing and maintaining all tree protection
measures as defined in the arborist report by Peninsula Tree Care Inc. and date stamped by the
Planning Department on June 30, 2008;
9. that the conditions of the Chief Building Official's July 2, 2008 memo, the City Engineer's July 22,
2008 memo, the Fire Marshal's July 7, 2008 memo, the City Arborist's July 30, 2008 memo, and
the NPDES Coordinator's July 7, 2008 memo shall be met;
10. that demolition for removal of the existing structures and any grading or earth moving on the site
shall not occur until a building permit has been issued and such site work shall be required to
comply with all the regulations of the Bay Area Air Quality Management District;
11. that prior to issuance of a building permit for construction of the project, the project construction
plans shall be modified to include a cover sheet listing all conditions of approval adopted by the
Planning Commission, or City Council on appeal; which shall remain a part of all sets of approved
plans throughout the construction process. Compliance with all conditions of approval is
required; the conditions of approval shall not be modified or changed without the approval of the
Planning Commission, or City Council on appeal;
MAY -. 6 2009
CITY of BURLIN AME_ 1
ti
EXHIBIT A
CONDITIONS OF APPROVAL — 2843 ADELINE DRIVE
DESIGN REVIEW, HILLSIDE AREA CONSTRUCTION PERMIT, HEIGHT VARIANCE AND
SPECIAL PERMIT
12. that all air ducts, plumbing vents, and flues shall be combined, where possible, to a single
termination and installed on the portions of the roof not visible from the street; and that these
venting details shall be included and approved in the construction plans before a Building permit
is issued;
13. that the project shall comply with the Construction and Demolition Debris Recycling Ordinance
which requires affected demolition, new construction and alteration projects to submit a Waste
Reduction plan and meet recycling requirements; any partial or full demolition of a structure,
interior or exterior, shall require a demolition permit;
14. that during demolition of the existing residence, site preparation and construction of the new
residence, the applicant shall use all applicable "best management practices" as identified in
Burlingame's Storm Water Ordinance, to prevent erosion and off -site sedimentation of storm
water runoff;
15. that the project shall meet all the requirements of the a i ornia buildin" g an -Uniform-Fire-Codes,
2007 Edition, as amended by the City of Burlingame;
THE FOLLOWING CONDITIONS SHALL BE MET DURING THE BUILDING INSPECTION PROCESS
PRIOR TO THE INSPECTIONS NOTED IN EACH CONDITION
16. that prior to scheduling the foundation inspection, a licensed surveyor shall locate the property
corners, set the building footprint and certify the first floor elevation of the new structure(s) based
on the elevation at the top of the form boards per the approved plans; this survey shall be
accepted by the City Engineer;
17. that prior to scheduling the framing inspection the project architect or residential designer, or
another architect or residential design professional, shall provide an architectural certification that
the architectural details shown in the approved design which should be evident at framing, such
as window locations and bays, are built as shown on the approved plans; architectural
certification documenting framing compliance with approved design shall be submitted to the
Building Division before the final framing inspection shall be scheduled;
18. that prior to scheduling the roof deck inspection, a licensed surveyor shall shoot the height of the
roof ridge and provide certification of that height to the Building Department; and
19. that prior to final inspection, Planning Department staff will inspect and note compliance of the
architectural details (trim materials, window type, etc.) to verify that the project has been built
according to the approved Planning and Building plans.
i LECEE`.'P eF
MAY - a 2009
CITY OF E:URLINGA,1 17-
?1ANNINC3 DEPT 2
RESOLUTION APPROVING CATEGORICAL EXEMPTION, DESIGN REVIEW,
HILLSIDE AREA CONSTRUCTION PERMIT, VARIANCE AND SPECIAL PERMIT
RESOLVED, by the Planning Commission of the City of Burlingame that:
WHEREAS, a categorical exemption has been proposed and application has been made for
Design Review, Hillside Area Construction Permit, Variance for height and Special Permit for
attached garage for a new, three and a half story, single family dwellinq with attached garage at
2843 Adeline Drive, zoned R-1, Denham Llc, property owner, 851 Burlway Road, Suite 710,
Burlingame, CA, APN: 027-093-310;
WHEREAS, said matters were heard by the Planning Commission of the City of Burlingame on
March 9, 2009, at which time it reviewed and considered the staff report and all other written
materials and testimony presented at said hearing;
NOW, THEREFORE, it is RESOLVED and DETERMINED by this Planning Commission that:
On the basis of the Initial Study and the documents submitted and reviewed, and
comments received and addressed by this commission, it is hereby found that there is
no substantial evidence that the project set forth above will have a significant effect on
the environment, and categorical exemption, per CEQA Article 19, Section: 15303 (a),
which states that construction of a limited number of new, small facilities or structures
including one single family residence or a second dwelling unit in a residential zone is
exempt from environmental review. In urbanized areas, up to three single-family
residences maybe constructed or converted under this exemption, is hereby approved.
2. Said Design Review, Hillside Area Construction Permit, Variance and Special Permit are
approved subject to the conditions set forth in Exhibit "A" attached hereto. Findings for
such Design Review, Hillside Area Construction Permit, Variance and Special Permit are
set forth in the staff report, minutes, and recording of said meeting.
3. It is further directed that a certified copy of this resolution be recorded in the official
records of the County of San Mateo. —'�_—
I, , Secretary of the Planning Commission of the City of Burlingame, do hereby
certify that the foregoing resolution was introduced and adopted at a regular meeting of the
Planning Commission held on the 9th day of March, 2009 by the following vote:
Secretary
EXHIBIT "A"
Conditions of approval for Categorical Exemption, Design Review, Hillside Area Construction
Permit, Variance and Special Permit.
2843 Adeline Drive
Effective March 19, 2009
that the project shall be built as shown on the plans submitted to the Planning Division
date stamped January 27, 2009, sheets A02 through A09, and date stamped December
2, 2008, sheets A00 through A01c, A10 through A16 and Preliminary Grading and
Drainage Plan;
2. that any changes to building materials, exterior finishes, windows, architectural features,
roof height or pitch, and amount or type of hardscape materials shall be subject to
Planning Division or Planning Commission review (FYI or amendment to be determined
by Planning staff);
3. that any changes to the size or envelope of the basement, first or second floors, or
garage, which would include adding or enlarging a dormer(s), shall require an
amendment to this permit;
4. that if the structure is demolished or the envelope changed at a later date the Special
Permit and Variance as well as any other exceptions to the code granted here will
become void;
5. that the property owner shall be responsible for implementing and maintaining all tree
protection measures as defined in the arborist report by Peninsula Tree Care Inc. and
date stamped by the Planning Department on June 30, 2008;
6. that the conditions of the Chief Building Official's July 2, 2008 memo, the City Engineer's
July 22, 2008 memo, the Fire Marshal's July 7, 2008 memo, the City Arborist's July 30,
2008 memo, and the NPDES Coordinator's July 7, 2008 memo shall be met;
7. that demolition for removal of the existing structures and any grading or earth moving on
the site shall not occur until a building permit has been issued and such site work shall
be required to comply with all the regulations of the Bay Area Air Quality Management
District;
8. that prior to issuance of a building permit for construction of the project, the project
construction plans shall be modified to include a cover sheet listing all conditions of
approval adopted by the Planning Commission, or City Council on appeal; which shall
remain a part of all sets of approved plans throughout the construction process.
Compliance with all conditions of approval is required; the conditions of approval shall
not be modified or changed without the approval of the Planning Commission, or City
Council on appeal;
9. that all air ducts, plumbing vents, and flues shall be combined, where possible, to a
single termination and installed on the portions of the roof not visible from the street; and
that these venting details shall be included and approved in the construction plans
before a Building permit is issued;
10. that the project shall comply with the Construction and Demolition Debris Recycling
Ordinance which requires affected demolition, new construction and alteration projects
to submit a Waste Reduction plan and meet recycling requirements; any partial or full
EXHIBIT "A'
Conditions of approval for Categorical Exemption, Design Review, Hillside Area Construction
Permit, Variance and Special Permit.
2843 Adeline Drive
Effective March 19, 2009
demolition of a structure, interior or exterior, shall require a demolition permit;
11. that during demolition of the existing residence, site preparation and construction of the
new residence, the applicant shall use all applicable "best management practices" as
identified in Burlingame's Storm Water Ordinance, to prevent erosion and off -site
sedimentation of storm water runoff;
12. that the project shall meet all the requirements of the California Building and Uniform
Fire Codes, 2007 Edition, as amended by the City of Burlingame;
THE FOLLOWING CONDITIONS SHALL BE MET DURING THE BUILDING INSPECTION
PROCESS PRIOR TO THE INSPECTIONS NOTED IN EACH CONDITION:
13. that prior to scheduling the foundation inspection, a licensed surveyor shall locate the
property corners, set the building footprint and certify the first floor elevation of the new
structure(s) based on the elevation at the top of the form boards per the approved plans;
this survey shall be accepted by the City Engineer;
14. that prior to scheduling the framing inspection the project architect or residential
designer, or another architect or residential design professional, shall provide an
architectural certification that the architectural details shown in the approved design
which should be evident at framing, such as window locations and bays, are built as
shown on the approved plans; architectural certification documenting framing
compliance with approved design shall be submitted to the Building Division before the
final framing inspection shall be scheduled;
15. that prior to scheduling the roof deck inspection, a licensed surveyor shall shoot the
height of the roof ridge and provide certification of that height to the Building
Department; and
16. that prior to final inspection, Planning Department staff will inspect and note compliance
of the architectural details (trim materials, window type, etc.) to verify that the project has
been built according to the approved Planning and Building plans.
Project Comments
Date: July 1, 2008
To: Y City Engineer
(650) 558-7230
❑ Chief Building Official
(650) 558-7260
❑ City Arborist
(650) 558-7254
From: Planning Staff
❑ Recycling Specialist
(650) 558-7271
❑ Fire Marshal
(650) 558-7600
❑ NPDES Coordinator
(650) 342-3727
❑ City Attorney
Subject: Request for Design Review, Special Permit for attached garage, and
Variance for height for a new two -and -half story single family dwelling
with attached garage at 2843 Adeline Drive, zoned R-1, APN: 027-
093-310
Staff Review: July 7, 2008
1. See attached.
2. Sewer backwater protection certification is required. Contact Public Works —
Engineering Division at (650) 558-7230 for additional information.
3. Driveway approach appears to extend beyond property line projection to the
street. The entire driveway must stay within the property line projection to the
street.
Reviewed by: V V
Date: 7/22/2008
PUBLIC WORKS DEPARTMENT ENGINEERING DIVISION
PLANNING REVIEW COMMENTS OW 'rw, tin A*T
Project Name: S IW4LO 'f
Project Address: fLy'3 �91'u ac$�
The following requirements apply to the project
1 A property boundary survey shall be preformed by a licensed land
surveyor. The survey shall show all property lines, property corners,
easements, topographical features and utilities. (Required prior to the
/ building permit issuance.)
2 The site and roof drainage shall be shown on plans and should be made to
drain towards the Frontage Street. (Required prior to the building permit
issuance.)
3. The applicant shall submit project grading and drainage plans for
approval prior to the issuance of a Building permit.
4 The project site is in a flood zone, the project shall comply with the City's
flood zone requirements.
5 A oanitary sewer lateral M is required for the project in accordance with
the City's standards. ( )
6. The project plans shall show the required Bayfront Bike/Pedestrian trail
and necessary public access improvements as required by San Francisco
Bay Conservation and Development Commission.
7. Sanitary sewer analysis is required for the project. The sewer analysis
shall identify the project's impact to the City's sewer system and any
sewer pump stations and identify mitigation measures.
8 . Submit traffic trip generation analysis for the project.
9. Submit a traffic impact study for the project. The traffic study should
identify the project generated impacts and recommend mitigation
measures to be adopted by the project to be approved by the City
Engineer.
10. The project shall file a parcel map with the Public Works Engineering
Division. The parcel map shall show all existing property lines, easements,
monuments, and new property and lot lines proposed by the map.
Page 1 of 3
UAprivate development\PLANNING REVIEW COMMENTS.doc
PUBLIC WORKS DEPARTMENT ENGINEERING DIVISION
11. A latest preliminary title report of the subject parcel of land shall be
submitted to the Public Works Engineering Division with the parcel map
for reviews.
12 Map closure/lot closure calculations shall be submitted with the parcel
map.
13 The project shall submit a condominium map to the Engineering Divisions
/ in accordance with the requirements of the Subdivision Map Act.
14 The project shall, at its own cost, design and construct frontage public
improvements including curb, gutter, sidewalk and other necessary
appurtenant work.
15 The project shall, at its own cost, design and construct frontage streetscape
improvements including sidewalk, curb, gutters, parking meters and poles,
trees, and streetlights in accordance with streetscape master plan.
16 By the preliminary review of plans, it appears that the project may cause
adverse impacts during construction to vehicular traffic, pedestrian traffic
and public on street parking. The project shall identify these impacts and
provide mitigation measure acceptable to the City.
17 The project shall submit hydrologic calculations from a registered civil
engineer for the proposed creek enclosure. The hydraulic calculations
must show that the proposed creek enclosure doesn't cause any adverse
impact to both upstream and downstream properties. The hydrologic
calculations shall accompany a site map showing the area of the 100-year
flood and existing improvements with proposed improvements.
18 Any work within the drainage area, creek, or creek banks requires a State
Department of Fish and Game Permit and Army Corps of Engineers
Permits.
19 No construction debris shall be allowed into the creek.
20 V The project shall comply with the City's NPDES permit requirement to
prevent storm water pollution.
21 The project does not show the dimensions of existing driveways, re-
submit plans with driveway dimensions. Also clarify if the project is
proposing to widen the driveway. Any widening of the driveway is subject
to City Engineer's approval.
22y The plans do not indicate the slope of the driveway, re -submit plans
showing the driveway profile with elevations
Page 2 of 3
UAprivate development\PLANNING REVIEW COMMENTS.doc
PUBLIC WORKS DEPARTMENT ENGINEERING DIVISION
23 The back of the driveway/sidewalk approach shall be at least 12" above
the flow line of the frontage curb in the street to prevent overflow of storm
water from the street into private property.
24. For the takeout service, a garbage receptacle shall be placed in front. The
sidewalk fronting the store shall be kept clean 20' from each side of the
property.
25. For commercial projects a designated garbage bin space and cleaning area
shall be located inside the building. A drain connecting the garbage area to
the Sanitary Sewer System is required.
Page 3 of 3
UAprivate development\PLANNING REVIEW COMIENTS.doc
Project Comments
Date: July 1, 2008
To: ❑ City Engineer
(650) 558-7230
X Chief Building Official
(650) 558-7260
❑ City Arborist
(650) 558-7254
From: Planning Staff
❑ Recycling Specialist
(650) 558-7271
❑ Fire Marshal
(650) 558-7600
❑ NPDES Coordinator
(650) 342-3727
❑ City Attorney
Subject: Request for Design Review, Special Permit for attached garage, and
Variance for height for a new two -and -half story single family dwelling
with attached garage at 2843 Adeline Drive, zoned R-1, APN: 027-
093-310
Staff Review: July 7, 2008
1) On the plans specify that this project will comply with the 2007 California Building Codes (CBC).
2) Prior to applying for a Building Permit the applicant must obtain a change of address from the
Engineering Department. The County records show this parcel address as 12 Vista Lane. The
correct address must be referenced on all pages of the plans.
3) Provide fully dimensioned plans.
4) Provide existing and proposed elevations.
5) Show the distances from all exterior walls to property lines or to assumed property lines
6) When you submit your plans to the Building Division for plan review provide a completed
Supplemental Demolition Permit Application. NOTE: The Demolition Permit will not be issued
until a Building Permit is issued for the project.
7) Comply with the 2005 California Energy Efficiency Standards for low-rise residential / non-
residential buildings. Go to http://www.energy.ca.gov/title24 for publications and details.
8) Rooms that can be used for sleeping purposes must have at least one window or door that
complies with the egress requirements. Specify the size and location of all required egress
windows on the elevation drawings.
9) Provide guardrails at all landings. NOTE: All landings more than 30" in height at any point are
considered in calculating the allowable floor area. Consult the Planning Department for details if
your project entails landings more than 30" in height.
10) Provide handrails at all stairs where there are four or more risers.
11) Provide lighting at all exterior landings.
12) The fireplace chimney must terminate at least two feet higher than any portion of the building
within ten feet. Sec. 2113.9
13) NOTE: A written response to the items noted here and plans that specifically address
items 1, 2, and 8 must be re-submi ed before this project can move forward for Planning
Commission action.
Reviewed by Date: nF'a/-zL
Date:
July 1, 2008
Project Comments
To: ❑ City Engineer
(650) 558-7230
❑ Chief Building Official
(650) 558-7260
C9'City Arborist
(650) 558-7254
From: Planning Staff
❑ Recycling Specialist
(650) 558-7271
❑ Fire Marshal
(650) 558-7600
❑ NPDES Coordinator
(650) 342-3727
❑ City Attorney
Subject: Request for Design Review, Special Permit for attached garage, and
Variance for height for a new two -and -half story single family dwelling
with attached garage at 2843 Adeline Drive, zoned R-1,
APN: 027-093-310
Staff Review: July 7, 2008
Reviewed by: , ��� Date: 7/-7 o
Project Comments
Date: July 1, 2008
To: ❑ City Engineer
(650) 558-7230
❑ Chief Building Official
(650) 558-7260
❑ City Arborist
(650) 558-7254
From: Planning Staff
❑ Recycling Specialist
(650) 558-7271
of Fire Marshal
(650) 558-7600
❑ NPDES Coordinator
(650) 342-3727
❑ City Attorney
Subject: Request for Design Review, Special Permit for attached garage, and
Variance for height for a new two -and -half story single family dwelling
with attached garage at 2843 Adeline Drive, zoned R-1, APN: 027-
093-310
Staff Review: July 7, 2008
Provide a residential fire sprinkler throughout the residence.
1. Provide a minimum 1 inch water meter.
2. Provide backflow prevention device/double check valve assembly —
Schematic of water lateral line after meter shall be shown on Building
Plans prior to approval indicating location of the device after the split
between domestic and fire protection lines.
3. Drawings submitted to Building Department for review and approval shall
clearly indicate Fire Sprinklers shall be installed and shop drawings
shall be approved by the Fire Department prior to installation.
The furthest point of the structure shall not exceed 150 feet distance from approved
fire apparatus access. Provide fire apparatus access 20 feet wide to the structure
consistent with §503, IFC 2006. Driveway maximum slope shall not exceed 16% and
the angles of approach shall not exceed 5%. Turning maximum turning radius shall
comply with Central County Fire Department's standards.
Engineer shall ensure at least fire hydrants can provide at least 1,500 gpm fire flow
for 2 hours and a fire hydrant shall be accessible within 400 feet of the furthest point
of the structure along fire apparatus access.
Reviewed by: ,�� --�G�` Date: 7,i,;�7 csFe
Project Comments
Date: July 1, 2008
To: City Engineer
(650) 558-7230
Chief Building Official
(650) 558-7260
City Arborist
(650) 558-7254
From: Planning Staff
Recycling Specialist
(650) 558-727
Fire Marshal
(650) 558-7600
✓ NPDES Coordinator
(650) 342-3727
City Attorney
Subject: Request for Design Review, Special Permit for attached garage, and
Variance for height for a new two -and -half story single family dwelling
with attached garage at 2843 Adeline Drive, zoned R-1, APN: 027-
093-310
Staff Review: July 7, 2008
Any construction project in the City, regardless of size, shall comply with the City
NPDES permit requirement to prevent stormwater pollution from construction
activities. Project proponent shall ensure all contractors implement Best
Management Practices (BMPs) during construction.
Include a list of BMPs and erosion and sediment control measure plan as project
notes when submitting plans for a building permit. Please see attached brochures
for guidance.
For additional assistance, contact Eva J. at 650/342-3727.
Reviewed by: E5- Date: 07/07/2008
Remember: The property owner and the contractor share ultimate responsibility for the activities that occur on a construction
site. }Cou will be held responsible for any environmental damages and associated clean-up costs.
San.Mateo Countywide StormwaterPollutionPreventionProgram
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Pollution Prevention It.'s Part of the- Plan
It is your responsibility to do the job right!
Runoff from streets and other paved areas is a•maior source of pollutionia local creeks, San Francisco Bay and the Pacific Ocean.
Construction activities can directly affect the health of our waters unless contractors and crews plan ahead to keep dirt, debris, and other
construction waste away from storm drains and creeks. Following these guidelines will ensure your compliance with local stormwater
ordinance requirements. Remember, ongoing monitoring and maintenance of installed controls is crucial to proper implementation.
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WHY SHOULD WE WORRY ABOUT SOIL EROSION?
Water and wind carry soil from our Bay Area land down into our
streams, lakes and the Bay. This soil carries with it pollu-
tants such as oil and grease, chemicals, fertilizers, animal
wastes and bacteria, which threaten our water quality.
Such erosion also costs the home construction industry, local
government, and the homeowner untold millions of dollars
a year.
Nature slowly wears away land, but human activities such as
construction increase the rate of erosion 200, even 2, 000 times
that amount. When we remove vegetation or other objects that
hold soil in place, we expose it to the action of wind and water
and increase its chances of eroding.
The loss of soil from a construction site results in loss of topsoil,
minerals and nutrients, and it causes ugly cuts and gullies in the
landscape. Surface runoff and the materials it carries with it clog
our culverts, flood channels and streams. Sometimes it destroys
wildlife and damages recreational areas such as lakes and re-
servoirs.
As an example, road and home building in the Oakland hills
above Lake Temescal filled the lake to such an extent that it had
to be dredged in 1979 at a public cost of $750,000.
NEED MORE INFORMATION?
ABAG has produced a slide/tape show on soil erosion
called "Money Down the Drain." It is available for showing
to any interested group. Call ABAG Public Affairs at (415)
841-9730.
ABAG has also published a "Manual of Standards for Sur-
face Runoff Control Measures" which deals extensively
with designs and practices for erosion prevention, sedi-
ment control, and control of urban runoff. The manual
addresses problems and solutions as they apply to
California and the Bay Area. It can be purchased from
ABAG and is available on reference at many local libraries
and in city and county public works and planning depart-
ments.
USDA Soil Conservation Service personnel are willing to
provide more information on specific erosion problems.
This brochure is a cooperative project of the Association of
Bay Area Governments and the East Bay Regional Park
District.
ASSOCIATION EAST BAY REGIONAL
/"►al'7l78AV AREA
64 —ENTs PARK DISTRICT
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PROTECTING
YOUR
PROPERTY
FROM
EROSION
EROSION CONTROL CAN PROTECT
YOUR. PROPERTY AND PREVENT
FUTURE. HEADACHES
Vegetation -stabilized Bare Slope: Headaches
1 Slope: Security and Liability
f li) •soil in place • mudslide danger
• minimum of loss of topsoil
erosion • dogged storm `
• fewer winter clean- drains, flooding
up problems problems rtr
• protection for • expensive ;
house fours- cleanup r '
dations • eroded or
1�r buried house
foundationsop
;
ti
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TIPS FOR THE HOMEOWNEF
"Winterise" your property by mid -September. Don't
wait until spring to put in landscaping. You need
winter protection. Final landscaping can be done
later.
Inexpensive measures installed by fall will give you
protection quickly that will last all during the wet
season.
In one afternoon you can:
• Dig trenches to drain surface runoff water away
from problem areas such as steep, bare slopes.
• Prepare bare areas on slopes for seeding by raking
the surface to loosen and roughen soil so it will
hold seeds.
Seeding of bare slopes
• Hand broadcast or use a "breast seeder." A typical
yard can be done in Iess than an hour.
• Give seeds a boost with fertilizer.
• Mulch if you can, with grass clippings and leaves,
bark chips or straw.
• Use netting to hold soil and seeds on steep slopes.
• Check with your local nursery for advice.
Winter alert
• Check before storms to see that drains and ditches
are not clogged by leaves and rubble.
Check after major storms to be sure drains are clear
and vegetation is holding on slopes. Repair as
necessary.
Spot seed any bare areas.
WHAT YOU CAN DO TO
CONTROL EROSION
AND PROTECT
YOUR PROPERTY
Soil erosion costs Bay Area homeowners millions of dol-
lars a year. We lose valuable topsoil. We have to pay for
damage to roads and property. And our tax money has to
be spent on cleaning. out sediment from storm drains,
channels,lakes and the Bay.
You can protect your prop-
erty and prevent future
headaches by following
these guidelines:
BEFORE AND
DIIRING
CONSTRUC?ION
• Plan construction activities during spring and summer,
so that erosion control measures can be in place when
the rain comes.
• Examine your site carefully before building. Be aware of
the slope, drainage patterns and soil types. Proper site
design will help you avoid expensive stabilization work.
Preserve existing vegeta-
tion as much as possible.
Limit grading and plant
removal to the areas
under current construc-
tion. (Vegetation will
naturally curb erosion,
improve the appearance
and the value of your
property, and reduce the
cost of landscaping later.)
• Use fencing to protect plants from fill material and traffic.
If you have to pave near trees, do so with permeable as-
phalt or porous paving blocks.
• Preserve the natural contours of the Iand and disturb the
earth as little as possible. Limit the time in which graded
areas are exposed. -
• Minimize the length and
steepness of slopes by
benching, terracing, or
constructing diversion
structures. Landscape
~' benched areas to stabilize
the slope and improve its
appearance.
• As soon as possible after grading a site, plant vegetation
on all areas that are not to be paved or otherwise
covered.
• Control dust on graded areas by sprinkling with water,
restricting traffic to certain routes, and paving or gravel-
ing access roads and driveways.
TEMPORARY MEASURES TO
STABILIZE THE SOIL
Grass provides the
cheapest and most ef-
fective short-term ero-
sion control. It grows
quickly and covers the
ground completely. To
fund the best seed mix-
tures and plants for
your area, check with
your Local nursery, the
U.S. Department of Ag-
riculture Soil Conserva-
tion Service, or the
University of California
Cooperative Extension.
Mulches hold soil moisture and provide ground protection
from rain damage. They also provide a favorable envi-
ronment for starting and growing plants. Easy -to -obtain
mulches are grass clippings, leaves, sawdust, bark chips
and straw.
Straw mulch is nearly IGO% effective when held in place by
spraying with an organic glue or wood fiber (tackifiers), by
punching it into the soil with a shovel or roller, or by tack-
ing a netting over it.
Commercial applications of
wood fibers combined with
various seeds and fertilizers
(hydraulic mulching) are effec-
tive in stabilizing sloped areas. -
Hydraulic mulching with a
tackifier should -
be done in two _
separate appli-
cations: the first r
composed of seed fertilizer and half the mulch, the second
composed of the remaining mulch and tackifier. Commer-
cial hydraulic mulch applicators —who also provide other
erosion control services — are listed under "landscaping" in
the phone book.
Mats of excelsior, jute netting and plastic sheets can be ef-
fective temporary covers, but they must be in contact with
the soil and fastened securely to work effectively.
Roof drainage can be collected in barrels or storage con-
tainers or routed into lawns, planter boxes and gardens.
Be sure to cover stored water so you don't collect mos-
quitos, too. Excessive runoff should be directed away from
your house. Too much water can damage trees and make
foundations unstable.
STRUCTURAL RUNOFF CONTROLS
Even with proper timing and planting, you may need to
protect disturbed areas from rainfall until the plants have
time to establish themselves. Or you may need permanent
ways to transport water across your property so that it
doesn't cause erosion.
To keep water from carrying soil from your site and dump-
ing it into nearby lots, streets, streams and channels, you
need ways to reduce its volume and speed. Some exam-
ples of what you might use are:
perimeter dike
straw mulch
Riprap (rock lining) —to
protect channel banks
from erosive water flow
• Sediment trap —to
stop runoff carrying
sediment and trap the
sediment
• Storm drain outlet
protection —to reduce
the speed of water flow-
ing from a pipe onto
open ground or irito a
natural channel
• Diversion dike or perimeter dike —to divert excess
water to places where it can be disposed of properly
• Straw bale dike —to stop and detain sediment from
'small unprotected areas
(a short-term measure)
• Perimeter swale—to divert
runoff from a disturbed area
or to contain runoff within
a disturbed area
• Grade stabilization structure —to carry concentrated
runoff down a slope
sediment trap
jute netting
lrirlplrr)ri,1 Wf ,n•.•
outlet protection
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