Soilworks products are the industry’s top standard due to our insistence on creating high performance soil stabilization and dust control products that stand up to rigorous testing – both in the lab and in the field. Our commitment to quality and performance has led to our involvement and testing in hundreds of real-world situations. The following library of reports, presentations, specifications, approvals and other similar documents provide you, our customer, the transparency and dependable assurance that is expected from Soilworks.
MANAGING NATURALLY OCCURRING ASBESTOS, SOLUTIONS FOR ALASKA
Youngdahn Consulting Group, Inc.
Building Innovative Solutions
Kotzebue, Alaska, September 27th, 2011
David C. Sederquist, P.G., C.E.G, C.HG., Slide 1
Overview
David C. Sederquist, P.G., C.E.G, C.HG., Slide 2
California
More than 25 years of experience
David C. Sederquist, P.G., C.E.G, C.HG., Slide 3
Serpentinite Aggregate
Serpentinite is easy to mine and was popular in California as a road surfacing material. The California Air Resources Board developed Test Method 435 specifically to screen serpentinite aggregate for asbestos.
David C. Sederquist, P.G., C.E.G, C.HG., Slide 4
Then the Media Hit
Projects in El Dorado churning up asbestos: Potential cancer hazard in unearthed bedrock Sunday, March 29th, 1998.
By Chris Bowman, Sacramento Bee
Construction in the fast-developing foothills of El Dorado County has been unearthing and stirring up naturally occurring asbestos, creating a potential cancer hazard to some residents – especially children.
The threat is largely unknown to county officials and the many families who moved to the golden hills in pursuit of a cleaner environment.
Tests commissioned by The Bee confirmed the presence of a particularly hazardous kind of asbestos in neighborhoods of El Dorado Hills and Latrobe. The fibers were small enough to reach deep into the lung, yet large enough to lodge there for life and cause cancer.
David C. Sederquist, P.G., C.E.G, C.HG., Slide 5
California Statewide Regulations
Final Regulation Order |
ASBESTOS AIRBORNE TOXIC CONTROL MEASURE (ATCM) FOR SURFACING APPLICATION |
Section 93106. Asbestos Airborne Toxic Control Measure for Surfacing Applications |
Final Regulation Order |
ASBESTOS AIRBORNE TOXIC CONTROL MEASURE FOR CONSTRUCTION, GRADING, QUARRYING, AND SURFACE MINING OPERATIONS |
Section 93105. Asbestos Airborne Toxic Control Measure for Construction, Grading, Quarrying, and Surface Mining Operations |
David C. Sederquist, P.G., C.E.G, C.HG., Slide 6
California Remote Area Exemption, CCR Section 93106
(9)
Surfacing Applications in Remote Locations:
(A)
The APCO may provide an exemption from the requirements of subsection (c) if the owner / operator can
demonstrate that:
percent or less is not reasonably available.
David C. Sederquist, P.G., C.E.G, C.HG., Slide 7
Schools
Oak Ridge High School, El Dorado Hills
Lakeview Elementary School, El Dorado Hills
David C. Sederquist, P.G., C.E.G, C.HG., Slide 8
NOA and Industrial Grade Asbestos
– Crocidolite
– Amosite
– Tremolite
– Actinolite
– Anthophyllite
Image from Wikipedia
David C. Sederquist, P.G., C.E.G, C.HG., Slide 9
Non-Asbestos Amphiboles
David C. Sederquist, P.G., C.E.G, C.HG., Slide 10
Some NOA is Truly Asbestos
Mass grading in NOA containing materials
David C. Sederquist, P.G., C.E.G, C.HG., Slide 11
Cleavage Fragments
David C. Sederquist, P.G., C.E.G, C.HG., Slide 12
Cleavage Fragments Versus Fibers
David C. Sederquist, P.G., C.E.G, C.HG., Slide 13
USGS El Dorado Hills
David C. Sederquist, P.G., C.E.G, C.HG., Slide 14
Cleavage Fragment Risk Assessments
David C. Sederquist, P.G., C.E.G, C.HG., Slide 15
Ground Truth
David C. Sederquist, P.G., C.E.G, C.HG., Slide 16
Most Amphibole Asbestos Looks Like This
David C. Sederquist, P.G., C.E.G, C.HG., Slide 17
Health Risks
David C. Sederquist, P.G., C.E.G, C.HG., Slide 18
NOA Health Risk Studies
David C. Sederquist, P.G., C.E.G, C.HG., Slide 19
Nolan Paper
David C. Sederquist, P.G., C.E.G, C.HG., Slide 20
ASTDR in Ambler
David C. Sederquist, P.G., C.E.G, C.HG., Slide 21
ATSDR In El Dorado Hills
David C. Sederquist, P.G., C.E.G, C.HG., Slide 22
El Dorado Hills Risk
David C. Sederquist, P.G., C.E.G, C.HG., Slide 23
Asbestos Concentrations
Ambler Values:
Lead ATV 0.051
Trailing ATV > 0.212
Walking 0.212
f/cc PCMe
Table 3 Ambler Report
David C. Sederquist, P.G., C.E.G, C.HG., Slide 24
Mesothelioma Rates In El Dorado County
David C. Sederquist, P.G., C.E.G, C.HG., Slide 25
ATSDR Recommendations
David C. Sederquist, P.G., C.E.G, C.HG., Slide 26
Mitigation of NOA During Construction
David C. Sederquist, P.G., C.E.G, C.HG., Slide 27
Asbestos Dust Mitigation Plan
David C. Sederquist, P.G., C.E.G, C.HG., Slide 28
Fugitive Dust
David C. Sederquist, P.G., C.E.G, C.HG., Slide 29
Extreme Example
Good Blast
Bad Blast
David C. Sederquist, P.G., C.E.G, C.HG., Slide 30
Excavated Soil Management
David C. Sederquist, P.G., C.E.G, C.HG., Slide 31
Post Construction Stabilization
David C. Sederquist, P.G., C.E.G, C.HG., Slide 32
Pools
David C. Sederquist, P.G., C.E.G, C.HG., Slide 33
Example of 3D Geotextile
David C. Sederquist, P.G., C.E.G, C.HG., Slide 34
Example of Slope Covering
3-D geotextile slope covering being installed over slope previously covered by straw for erosion control
David C. Sederquist, P.G., C.E.G, C.HG., Slide 35
Air Quality Monitoring
Sensitive receptors
David C. Sederquist, P.G., C.E.G, C.HG., Slide 36
Typical School NOA Mitigation
David C. Sederquist, P.G., C.E.G, C.HG., Slide 37
Worker Safety
David C. Sederquist, P.G., C.E.G, C.HG., Slide 38
But Alaska is Not California
David C. Sederquist, P.G., C.E.G, C.HG., Slide 39
Key Points of Study
as the gas pipeline is built, it will require very large quantities of gravel
plan.
David C. Sederquist, P.G., C.E.G, C.HG., Slide 40
Start with the Simplest Methods
Palliatives.
David C. Sederquist, P.G., C.E.G, C.HG., Slide 41
From NR Transportation Forum Friday, October 22, 2010
by Clark Milne, PE AkDOT&PF; Northern Region M&O
David C. Sederquist, P.G., C.E.G, C.HG., Slide 42
Uses for Gravels With NOA
David C. Sederquist, P.G., C.E.G, C.HG., Slide 43
Vegetation
David C. Sederquist, P.G., C.E.G, C.HG., Slide 44
Soil
David C. Sederquist, P.G., C.E.G, C.HG., Slide 45
Wood Chips
David C. Sederquist, P.G., C.E.G, C.HG., Slide 46
Portland Cement Concrete and Asphaltic Concrete
David C. Sederquist, P.G., C.E.G, C.HG., Slide 47
Awareness and Education
David C. Sederquist, P.G., C.E.G, C.HG., Slide 48
Copyright Soilworks, LLC 2003-. All Rights Reserved. Soilworks®, Soiltac®, Gorilla-Snot®, and Durasoil®are registered trademarks of Soilworks, LCC.
Copyright Soilworks, LLC 2003-. All Rights Reserved. Soilworks®, Soiltac®, Gorilla-Snot®, and Durasoil® are registered trademarks of Soilworks, LCC.