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Purpose
The following instructions
were developed by the Environmental Programs
Division to ensure that sand-blasting permits are
restricted to projects for which it has been
demonstrated that lead levels are below appropriate
thresholds. These guidelines should be reviewed
before issuing a sand-blasting permit to the public.
Where
Do I Get a Sandblasting Permit?
Applications for sand-blasting
permits are issued by the Building and Safety
Division located in City Hall. For more information
please call (310) 458-8355.
How Many Samples are
Required?
The intent of sampling is to
develop a representative picture of the lead content
of all surfaces to be sandblasted. A ‘surface’ is
defined as The number of samples that is deemed
representative can change from site to site, for
example, multiple structures with larger surfaces
will require more samples. If you are uncertain,
please contact Environmental Programs Division staff
for assistance.
MULTIPLE SURFACES (Each
Stand-Alone Structure with Multiple Surfaces)
RULE -- One (1) Sample From EACH Surface
For each building
structure, at least
one sample is required from EACH surface
to be sandblasted. Each wall of a single-story
structure is a separate surface and requires a
separate sample. Each wall of each additional
story constitutes an additional surface. For an
average one-story single-family home with four
exterior walls, a minimum of 4 samples is
required. Each sample should be taken from a
different wall on the building. A detached
garage constitutes a separate structure.
SINGLE SURFACE
(Detached or Attached)
RULE -- Two (2) Samples From The Surface
If a permit application includes a single
surface such as one wall of a building or a
stand-alone wall, or other materials such as
hand railing, then two samples are required for
that surface.
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Example |
DESCRIPTION
Surfaces to be Sandblasted |
Number of
Samples |
|
1 |
Four (4) sides from a single-story house |
FOUR (4) samples, one from each wall |
|
2 |
Four (4) sides from a single-story house with detached stucco wall |
SIX (6) samples, one from each wall of house and two from the detached wall. |
|
3 |
Four (4) sides from a single-story house [first structure] with three (3) walls from a detached garage [second structure]. |
SEVEN (7) samples, one from each wall of the house and one from each wall of the garage. |
|
4 |
One stucco wall |
TWO (2) samples from the detached wall. |
|
5 |
Four (4) sides from a two (2) story apartment building. |
EIGHT (8) samples, one from each wall of each story. |
|
6 |
Four (4) sides from a large two (2) story commercial / industrial building. |
SIXTEEN (16) samples, Two from each wall of each story. |
Test Methods
There are two tests that can be used to test for lead. Basic descriptions are provided below including
the unit of analysis and the threshold for each method. If one or more samples exceeds the given
threshold, then the sandblasting permit shall be denied.
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Paint-Chip Analysis
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Unit of Analysis: |
parts per million (ppm) = milligrams/kilogram (mg/kg) |
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Threshold: |
600 (ppm) or 600 (mg/kg) |
If one or more samples exceeds 600 parts per million (ppm) or 600 (mg/kg), then the sandblasting
permit shall be denied. Test results shall be expressed as the actual concentration of lead detected
by the analysis and not as ‘positive’ or ‘negative’; please refer such cases to the Environmental
Programs Division.
Sampling Methods for Paint-Chip Analysis
The paint-chip sample should be representative of the surface. Federal HUD Guidelines recommend
collection of at least a 4-square-inch area to be placed in a sealable rigid container. Plastic tubes
or jars with a screw top are better than plastic bags. Paint-chip collection should include, as a
priority, collection of all the paint layers from the substrate, while minimizing any collection of
actual substrate. (For further details, refer to ASTM ES 28-94.)
Analysis for Paint-Chips
The analysis must be performed by a laboratory that is certified in the state of California to perform
lead tests. A list of some laboratories is provided.
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X-Ray Flouresence (XRF)
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Unit of Analysis: |
milligrams per square centimeter (mg/cm2) |
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Threshold: |
0.7 (mg/cm2) |
If one or more samples exceeds 0.7 (mg/cm2), then the sandblasting permit shall be denied.
Sampling Methods for XRF
The XRF method requires special equipment and
training and is typically used only by environmental
consultants who are hired to conduct the sampling. A
list of some consultants is provided.
Results at or above the thresholds require a state certified lead abatement contractor to do any work
that will disturb the lead contaminated materials including the proper management of the waste. Lists of
laboratories, lead consultants, and lead abatement contractors are provided. Please note, these are not
to be construed as endorsements by the City Of Santa Monica. If you have any questions, please contact EPD.
Reporting Illegal
Sandblasting: If you suspect that someone is operating without a valid sand-blasting permit please call the:
City of Santa
Monica Code Compliance Office
(310) 4580-4984 with
Building and Safety
(310) 458-8355.
If you suspect a
public health risk but no sand-blasting is evident please call the
County of Los Angeles Health Department
(323) 869-7066.
Office of
Sustainability and the Environment
Hazardous Materials Section
200 Santa Monica Pier, Suite C
Santa Monica, CA 90401
Attn:
James Conway
(310) 458-8711
or
(310) 458-8916, Ext. 2
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This page was last modified on
08/06/2008
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