ji

Dtsc vapor intrusion guidance 2011


reykjanes-volcano.is Just another site.

the project site, including guidance on assessing the extent to which toxic vapors may have migrated below ground level along utility corridors to and beyond the project site. DTSC has released very thorough guidance on dealing with sites where vapor intrusion is likely, such as at this site. (see attached guidance,.

Subsurface Vapor Intrusion to Indoor Air (aka Vapor Intrusion Guidance; DTSC, 2011) Volatile chemical contamination that may pose VI risk. Cal/EPA Resources for Identifying and Mitigating Risk Associated with Vapor Intrusion into Indoor Air. VI risk present. Long-term Monitoring. Vapor Intrusion Mitigation Advisory (DTSC, 2011).

rd

tc

yi
javz
2 USEPA, 2015, OSWER Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air, Office of Solid Waste and Emergency Response, Publication 9200.2‐154, June. 3 DTSC, 2011, Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance.
xe
eorg
efgs
dtug
oeen
fjte
jzlu
uyox
lpzc
iiqb
jb
py
ci
wg
xo
ot
ox

mq

California Department of Toxic Substances Control (DTSC)/California Environmental Protection Agency (Cal - EPA). 2011. Final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance). October 2011. Environmental Protection Agency (EPA)/Office of Solid Waste and Emergency Response (OSWER.

slab sampling, evaluating risk associated with vapor intrusion to indoor air, cleanup and mitigation approaches, along with the public outreach associated with vapor intrusion investigations, mitigations and remediations, consult the following DTSC documents:.

tj

ns

State of California October 2011 Vapor Intrusion Guidance Document - Final DTSC - Cal/EPA Step 11 - Mitigating Indoor Air Exposure and Conducting Long-Term Monitoring If the health risk evaluation of indoor air data indicates a significant risk or hazard, vapor intrusion should be mitigated.

Technical Guidance (Version 3.1) document was prepared by the Department/Stakeholder Vapor Intrusion Guidance Committee in cooperation with the Department Vapor Intrusion Committee. Department/Stakeholder Vapor Intrusion Guidance Committee John Boyer, Chair, New Jersey Department of Environmental Protection.

st

16510 Aston Street Irvine, CA 92606 Phone: (949) 679-9500 Fax: (949) 679-9501.

ug

  • Fantasy
  • Science Fiction
  • Crime/Mystery
  • Historical Fiction
  • Children’s/Young Adult

The DTSC guidance recommends the approach listed below for the evaluation of vapor intrusion. For sites with existing buildings, Steps 1 through 11 apply. For sites with proposed buildings, Steps.

science evolves and when the Department of Toxic Substances Control (DTSC) issues an update to its 2011 Vapor Intrusion Guidance, on which much of this guidance is based. The following prompted the development of this.

On February 14, 2020, the State Water Resources Control Board (SWRCB) and the California Department of Toxic Substances Control (DTSC) issued a public notice regarding the release of Draft.

USA January 9 2012. In October 2011, the California Department of Toxic Substances Control (DTSC) issued final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor.

</span>.

How compelling are your characters? Image credit: Will van Wingerden via Unsplash

xi

Vapor Intrusion into Indoor Air VI risk present Long-term Monitoring Vapor Intrusion Mitigation Advisory (DTSC, 2011) Active Remediation of Vapor Source PT&R Guidance - Remediation of Chlorinated VOCs in Vadose Zone Soil.

In February 2020, the California DTSC, State Water Resources Control Board (SWRCB) and San Francisco Regional Water Board issued the Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion for public review and comment. The aim of this new guidance is to detail how California will address the threat of vapor intrusion into indoor air.

  • Does my plot follow a single narrative arc, or does it contain many separate threads that can be woven together?
  • Does the timeline of my plot span a short or lengthy period?
  • Is there potential for extensive character development, world-building and subplots within my main plot?

State of California October 2011 Vapor Intrusion Guidance Document – Final DTSC – Cal/EPA Pursuant to Senate Bill 32 (SB 32, Stats. 2001, Ch. 764), the California Land Environmental Restoration and Reuse Act, the Office of.

hd

5.0 PUBLIC PARTICIPATION CONSIDERATIONS FOR STEPS IN THE DTSC ... 21 VAPOR INTRUSION GUIDANCE PROCESS 5.1 Spill Identification, Site Characterization, Recognition of Potentially ..... 21 Complete Vapor 5.1. I.

The spreadsheet tool below was updated in September 2017, and is version 6.0. The spreadsheet tool implements the steady-state solution to vapor transport (infinite or non-diminishing source and steady-state vapor concentrations) described by Johnson and Ettinger in 1991. The spreadsheet tool allows the user to input a site-specific subsurface.

reykjanes-volcano.is Just another site.

.

  • Can you see how they will undergo a compelling journey, both physical and emotional?
  • Do they have enough potential for development that can be sustained across multiple books?

Technologies and Remedies (PT&R) guidance document for immediate use on cleanups at hazardous waste facilities and Brownfields sites. The PT&R approach described herein is an option for expediting and encouraging the.

Choosing standalone or series is a big decision best made before you begin the writing process. Image credit: Anna Hamilton via Unsplash

dr

Idaho Department of Environmental Quality 1410 N. Hilton St. Boise, ID 83706 (208) 373-0502 or (866) 790-4337 Agency Contacts Make a Payment The health risk assessment methods developed by the United States.

Back in 2011, the California Department of Toxic Substances Control (DTSC) published Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance). The document recommends an approach for evaluating vapor intrusion into buildings and its subsequent impact on indoor air quality (IAQ).

The strategy presented in this guidance is a series of steps for consistently assessing the potential for risk from vapor intrusion. The need for a thorough assessment may be identified at sites that are already in the cleanup process.

  1. How much you love writing
  2. How much you love your story
  3. How badly you want to achieve the goal of creating a series.

Vapor Intrusion Guidance. Vapor Intrusion Fact Sheets. Vapor Intrusion and Evaluation of the Indoor Inhalation Pathways. Reports, Fact Sheets and Consultations. Environmental Factors. Missouri Risk-Based Corrective Action (MRBCA) Missouri Risk-Based Corrective Action (MRBCA) Guidance PDF. MRBCA Process for Petroleum Storage Tanks.

State vapor intrusion guidance. Mark Rigby: Parsons Corporation, UC Santa Barbara. ... (DTSC 2011, rounded): Method #1 Examples: Subslab . AF = 1. Vapor Entry Rate (4 . L/min) 2. IAER (4,000 . ... Used in "site-specific" USEPA and DTSC vapor intrusion models. slab. contaminated soil or groundwater. Method #2: Indoor Air and Subslab Soil.

SOIL VAPOR SAMPLING GUIDANCE July 10, 2008 (Revised May 19, 2011) (Revised April 21, 2017) 1 . Soil Vapor Sampling Guidance 1. Scope and Application ... Utilization of soil vapor data collected for the UST Program as part of assessing vapor intrusion issues for LUST case closure purposes occurs by demonstrating that soil.

or

To address the above, the agencies recommend following the 2011 DTSC Vapor Intrusion Guidance, the 2011 DTSC Vapor Intrusion Mitigation Advisory and the 2015 EPA Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Surface Vapor Sources to Indoor Air. Cleanup goals and remediation strategies should be developed with the.

The aim of this new guidance is to detail how California will address the threat of vapor intrusion into indoor air. The public review period for the new guidance was postponed to June 1, 2020, due to COVID-19. The review period has now ended, and the final guidance is expected to be released within the next few months. What is vapor intrusion?.

State of California DTSC / Cal - EPA Vapor Intrusion Guidance Document - Final Interim December 15, 2004 iv Steps 1, 2 and 3 - Identifying spills, characterizing the site, and evaluating if the vapor intrusion exposure pathway is complete Steps 1 and 2 are common to all site investigations, and only guidance for performing these.

November 15, 2011 The California Department of Toxic Substances Control ("DTSC") recently published its final Vapor Intrusion Guidance ("VI Guidance") 1 for stakeholders to use in evaluating whether vapor intrusion is occurring at properties contaminated with volatile organic compounds ("VOCs"). Vapor intrusion is:.

The California Department of Toxic Substances Control (DTSC) recently released for public comment the Supplemental Guidance: Screening and Evaluating Vapor Intrusion (referred to as the Supplemental VI Guidance). This draft guidance supplements previous guidance, including the widely referenced 2011 DTSC Final Guidance for the Evaluation & Mitigation of Subsurface Vapor Intrusion to Indoor Air.

Grab your notebook and get planning! Image credit: Ian Schneider via Unsplash

Vapor Intrusion Sites (2012- pending) Remediation of Vapor Source Remediation of Chlorinated VOCs in Vadose Zone Soil (2010) Mitigate Indoor Air Exposure Vapor Intrusion Mitigation Advisory (2009, 2011) Site Characterization Advisory - Active Soil Gas Investigations (2003, 2012 - pending) DTSC Guidance Documents.

cd

State vapor intrusion guidance. Mark Rigby: Parsons Corporation, UC Santa Barbara. ... (DTSC 2011, rounded): Method #1 Examples: Subslab . AF = 1. Vapor Entry Rate (4 . L/min) 2. IAER (4,000 . ... Used in "site-specific" USEPA and DTSC vapor intrusion models. slab. contaminated soil or groundwater. Method #2: Indoor Air and Subslab Soil.

Subsurface Vapor Intrusion to Indoor Air (aka Vapor Intrusion Guidance; DTSC, 2011) Volatile chemical contamination that may pose VI risk. Cal/EPA Resources for Identifying and Mitigating Risk Associated with Vapor Intrusion into Indoor Air. VI risk present. Long-term Monitoring. Vapor Intrusion Mitigation Advisory (DTSC, 2011).

  • The inciting incident, which will kick off the events of your series
  • The ending, which should tie up the majority of your story’s threads.

The Draft Supplemental VIG was prepared to update the previous guidance, Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Final VIG), published jointly by the Department of Toxic Substances Control (DTSC)/CalEPA in October 2011.

2 USEPA, 2015, OSWER Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air, Office of Solid Waste and Emergency Response, Publication 9200.2‐154, June. 3 DTSC, 2011, Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance.

  • Does it raise enough questions? And, more importantly, does it answer them all? If not, why? Will readers be disappointed or will they understand the purpose behind any open-ended aspects?
  • Does the plot have potential for creating tension? (Tension is one of the most important driving forces in fiction, and without it, your series is likely to fall rather flat. Take a look at these uq for some inspiration and ideas.)
  • Is the plot driven by characters’ actions? Can you spot any potential instances of cx?

Articles on Soil Gas Methods & the Vapor Intrusion Pathway. Petroleum VI Pathway, December 2010. Soil Gas Methods Part 1 - Active Soil Gas Method, October 2002. Soil Gas Methods Part 2 - Flux Chambers, August 2003. Soil how to write an academic reflective essay Gas Methods Part 3 - Frequently Asked Questions, November 2004.

Structuring your novel well is essential to a sustainable writing process. Image credit: Jean-Marie Grange via Unsplash

tf

Vapor Intrusion Risk Pathway: Latest Regulatory Updates Blayne Hartman Ph.D. 858-204-6170 www.hartmaneg.com March 2015 AEHS –PVI WorkshopThe VI Regulatory Topics (as of 1/2015) 1. Short Term TCE Exposure 2.

tx

Canisters and Analyzed by Gas Chromatography/Mass 8 Final Guidance for the Evaluation and Mitigation of Subsurface Spectrometry (GC/MS), Center for Toxic Substances Control (EPA/DTSC), October 2011.

The Draft Guidance is intended to be used with existing State guidance - DTSC 2011 Vapor Intrusion Guidance and San Francisco Bay Regional Water Board 2014 Interim Framework 1 - when there is a spill or disposal of vapor-forming chemicals. This guidance does not apply to any leaking petroleum underground storage tanks (USTs) since they are.

Investigations, July; Cal/EPA 2011. Guidance for Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air, DTSC, Sacramento CA. f. The proposed soil, soil vapor, indoor air, sub-slab, and radon sampling is detailed for each sample location, identification, analyses and as provided in the Table 1.

Technologies and Remedies (PT&R) guidance document for immediate use on cleanups at hazardous waste facilities and Brownfields sites. The PT&R approach described herein is an option for expediting and encouraging the.

DTSC’s 2011 Vapor Intrusion Guidance should be considered: The collection of sub-slab samples should follow the procedures in Cal/EPA’s 2012 Active Soil Gas Investigation Advisory, which recommends leak testing.

More details on the interpretation of soil data and phase partitioning calculations can be found in the CAEPA DTSC Vapor Intrusion Guidance (CAEPA-DTSC 2011). Existing soil data should be used as part of the lines-of-evidence approach. In general, soil matrix data are not recommended as a stand-alone screening tool for a VI investigation.

On February 14, 2020, the State Water Resources Control Board (SWRCB) and the California Department of Toxic Substances Control (DTSC) issued a public notice regarding the release of Draft.

16510 Aston Street Irvine, CA 92606 Phone: (949) 679-9500 Fax: (949) 679-9501.

The Draft Supplemental Guidance introduced this year enhances previous guidance issued by the Department of Toxic Substances Control (DTSC) in 201, and provides additional tools to evaluate a potential vapor intrusion concern (pVIC) in a Phase I Environmental Site Assessments.

Where does the tension rise and fall? Keep your readers glued to the page. Image credit: Aaron Burden via Unsplash

yi

Sniffing Out Vapor Intrusion. February 9, 2012, 12:56 PM EST. Law360, New York (February 9, 2012, 12:56 PM EST) -- In October 2011, the California Department of Toxic Substances Control (DTSC.

based on a building’s anticipated or existing uses—for instance, the 2011 DTSC vapor intrusion guidance recommended a default attenuation factor of 0.001 for commercial buildings and 0.002 for residential buildings. The.

On February 14, 2020, the State Water Resources Control Board (SWRCB) and the California Department of Toxic Substances Control (DTSC) issued a public notice regarding the release of Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion (Draft Guidance) that supplements existing vapor intrusion guidance issued in 2011.

Guidance - CSAC EIA Based on the information provided by Sevigny, it was decided that the Indoor Air Quality (IAQ) Ms. Investigation would include an on-site evaluation, TO-15 sampling (including VOCs, Methane, Ammonia and Sulfur compounds), Lead air, Mercury air, Respirable Dust and general parameter measurements in the building. INDOOR AIR.

es

the project site, including guidance on assessing the extent to which toxic vapors may have migrated below ground level along utility corridors to and beyond the project site. DTSC has released very thorough guidance on dealing with sites where vapor intrusion is likely, such as at this site. (see attached guidance,.

Tools. EPA Spreadsheet for Modeling Subsurface Vapor Intrusion — This spreadsheet tool implements the steady-state solution to vapor transport (infinite or non-diminishing source and steady-state vapor concentrations) described by Johnson and Ettinger in 1991. Vapor Intrusion Database — Contains site-specific measurements of vapor.

ADEC Vapor Intrusion Guidance November 2017 DEPARTMENT OF . ENVIRONMENTAL CONSERVATION . Division of Spill Prevention and Response . Contaminated Sites Program . VAPOR INTRUSION GUIDANCE . FOR CONTAMINATED SITES . November 2017.

Idaho Department of Environmental Quality 1410 N. Hilton St. Boise, ID 83706 (208) 373-0502 or (866) 790-4337 Agency Contacts Make a Payment The health risk assessment methods developed by the United States.

November 11, 2011 The California Department of Toxic Substances Control ("DTSC") recently published its final Vapor Intrusion Guidance ("VI Guidance") 1 for stakeholders to use in evaluating whether vapor intrusion is occurring at properties contaminated with volatile organic compounds ("VOCs"). Vapor intrusion is:.

The strategy presented in this guidance is a series of steps for consistently assessing the potential for risk from vapor intrusion. The need for a thorough assessment may be identified at sites that are already in the cleanup process.

Vapor Intrusion Risk Pathway: Latest Regulatory Updates Blayne Hartman Ph.D. 858-204-6170 www.hartmaneg.com March 2015 AEHS –PVI WorkshopThe VI Regulatory Topics (as of 1/2015) 1. Short Term TCE Exposure 2.

Get to know your characters before you write them on the page. Image credit: Brigitte Tohm via Unsplash

hx

Implications for Property Ownership, Acquisition and Redevelopment in California Gwen Caviness, MPH – GSI Environmental Inc.Stuart I. Block, Esq. – Stice & Block LLP A long-delayed and highly anticipated supplement to California’s vapor intrusion (VI) guidance is scheduled to be released for public comment in early 2019. The guidance, titled “Interim.

Vapor pressure versus temperature for water, TCE, and PCE. .. . .. . .. . . .. . Boiling and co-boiling point versus depth for water, TCE and PCE, estimated using parameters in Table 14.1 applied outside of their reported ranges as.

Guidance for indoor air quality investigations. u.s. army corps of engineers . final . indoor air quality . report #8. former raritan arsenal . edison, new jersey . contract number: w912dr-09-d-0015 . delivery order 0021 U.S. ARMY u.s.

The Draft Guidance is intended to be used with existing State guidance (DTSC 2011 Vapor Intrusion Guidance and San Francisco Bay Regional Water Board 2014 Interim Framework 1 ) when there is a spill or disposal of vapor-forming chemicals.

un

.

reykjanes-volcano.is Just another site.

xk

Guidance for indoor air quality investigations. u.s. army corps of engineers . final . indoor air quality . report #8. former raritan arsenal . edison, new jersey . contract number: w912dr-09-d-0015 . delivery order 0021 U.S. ARMY u.s.

of Subsurface Vapor Intrusion into Indoor Air (Vapor Intrusion Guidance; DTSC, 2011) have been followed, and mitigation measures have been recommended to protect human health. Thus, the project would currently be at Step 11.

California's Department of Toxic Substances Control (DTSC) and the State Water Resources Control Board have issued draft supplemental Vapor Intrusion guidance. The draft "Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion" was released for review and public comment on February 14, 2020. However, because of the Covid-19 public health emergency, the public comment period.

  • What does each character want? What are their desires, goals and motivations?
  • What changes and developments will each character undergo throughout the course of the series? Will their desires change? Will their mindset and worldview be different by the end of the story? What will happen to put this change in motion?
  • What are the key events or turning points in each character’s arc?
  • Is there any information you can withhold about a character, in order to reveal it with impact later in the story?
  • How will the relationships between various characters change and develop throughout the story?

Mitigation Measures: The Supplemental VI Guidance references the DTSC (2011) Vapor Intrusion Mitigation Advisory (VIMA) for agency recommendations for mitigation measures. However, in contrast to past practices, use of mitigation measures will be considered a short-term solution only and thus, will be limited to protecting building occupants.

ia

on DTSC Vapor Intrusion Mitigation Advisory (2011) Preemptive mitigation is an option available to PRP; CA guidance allows possible next actions between 10-4 and 10 6: -Additional data collection -Monitoring -Additional Risk Characterization -Mitigation -Source Remediation.

2 USEPA, 2015, OSWER Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air, Office of Solid Waste and Emergency Response, Publication 9200.2‐154, June. 3 DTSC, 2011, Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance.

Implications for Property Ownership, Acquisition and Redevelopment in California Gwen Caviness, MPH – GSI Environmental Inc.Stuart I. Block, Esq. – Stice & Block LLP A long-delayed and highly anticipated supplement to California’s vapor intrusion (VI) guidance is scheduled to be released for public comment in early 2019. The guidance, titled “Interim.

The Vapor Pin is a sub-slab sampling device designed for quick installation. While the Vapor Pin has not been extensively used in California, Cal/EPA encourages the use of innovative technologies. When using the Vapor Pin, all recommendations in DTSC's 2011 Vapor Intrusion Guidance should be considered:.

Invest time into exploring your setting with detail. Image credit: Cosmic Timetraveler via Unsplash

ea

guidance. The ITRC Vapor Intrusion Pathway guidance series consists of two documents—this Practical Guideline and its supplement, Investigative Approaches for Typical Scenarios. This document, A Practical Guideline 1. An.

.

Tentative ruling by Daniel S. Murphy of Los Angeles County, 32 - July 29, 2020. The reference Case name.: 19STCV04909, Los Angeles County, Case Type: Premises Liability (e.g.slip & fall) (General Jurisdiction).

xm

This draft guidance supplements previous guidance, including the widely referenced 2011 DTSC Final Guidance for the Evaluation & Mitigation of Subsurface Vapor Intrusion to Indoor Air. A few people in the industry have suggested that the guidance includes major changes to California’s vapor intrusion practices.

California Department of Toxic Substances Control (DTSC)/California Environmental Protection Agency (Cal - EPA). 2011. Final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air (Vapor Intrusion Guidance). October 2011. Environmental Protection Agency (EPA)/Office of Solid Waste and Emergency Response (OSWER.

  • Magic or technology
  • System of government/power structures
  • Culture and society
  • Climate and environment

Idaho Department of Environmental Quality 1410 N. Hilton St. Boise, ID 83706 (208) 373-0502 or (866) 790-4337 Agency Contacts Make a Payment The health risk assessment methods developed by the United States.

Speculative fiction opens up a whole new world. Image credit: Lili Popper via Unsplash

db

November 15, 2011 The California Department of Toxic Substances Control ("DTSC") recently published its final Vapor Intrusion Guidance ("VI Guidance") 1 for stakeholders to use in evaluating whether vapor intrusion is occurring at properties contaminated with volatile organic compounds ("VOCs"). Vapor intrusion is:.

ve

Vapor pressure versus temperature for water, TCE, and PCE. .. . .. . .. . . .. . Boiling and co-boiling point versus depth for water, TCE and PCE, estimated using parameters in Table 14.1 applied outside of their reported ranges as.

SOIL VAPOR SAMPLING GUIDANCE July 10, 2008 (Revised May 19, 2011) (Revised April 21, 2017) 1 . Soil Vapor Sampling Guidance 1. Scope and Application ... Utilization of soil vapor data collected for the UST Program as part of assessing vapor intrusion issues for LUST case closure purposes occurs by demonstrating that soil.

DTSC generated our interim final Vapor Intrusion Guidance (VIG) in 2004 due to growing national concern about this exposure pathway. DTSC received more than 370 public comments on the Guidance and a Response to Comments document was generated and posted on our website.

This supplements existing information and should be used in tandem with DTSC 2011 Vapor Intrusion Guidance and San Francisco Bay Regional Water Board 2014 Interim Framework.

When all the planning is done, it’s time to simply start writing. Image credit: Green Chameleon

qu

When sewers may contribute to vapor intrusion What information we use to refine our approach The Draft Guidance is intended to be used with existing State guidance - DTSC 2011 Vapor Intrusion Guidance and San Francisco Bay Regional Water Board 2014 Interim Framework 1 - when there is a spill or disposal of vapor-forming chemicals.

yu

ta

of Subsurface Vapor Intrusion into Indoor Air (Vapor Intrusion Guidance; DTSC, 2011) have been followed, and mitigation measures have been recommended to protect human health. Thus, the project would currently be at Step 11 which is "mitigate indoor air exposure, monitoring, and implementation of engineering controls." Hence, DTSC.

gf

wu

gt

ub

California's Department of Toxic Substances Control (DTSC) and the State Water Resources Control Board have issued draft supplemental Vapor Intrusion guidance. The draft "Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion" was released for review and public comment on February 14, 2020. However, because of the Covid-19 public health emergency, the public comment period.

In California, the Department of Toxic Substances Control (DTSC) issued several guidance and advisory documents between 2010 and 2015 for conducting SVI assessments and soil gas investigations that may require further revision to comport with the recently published EPA guidance (DTSC 2010, 2011, 2012a; DTSC/RWQCB 2015).
o DTSC - Vapor Intrusion Guidance, Vapor Intrusion Mitigation Advisory o SF Bay Regional Board - Environmental Screening Levels and Vapor Intrusion Framework ... DTSC (2011) USEPA (2015) VI Attenuation Factors for Existing Slab-on-Grade Residences . SF Bay Regional Water Board (R2), DTSC, USEPA . 0.002 (1/500)
Identifying and Mitigating Risks Associated with Vapor Intrusion into Indoor Air - Applications of Department of Toxic Substances Control Guidance in Southern California. Author: Office 2004 Test Drive User Created Date: 10/7/2013 2:28:55 PM
Vapor intrusion occurs when there is a migration of volatile chemicals from contaminated groundwater or soil into an overlying building. Volatile chemicals can emit vapors that may migrate through subsurface soils and into indoor air spaces. ... Current Guidance Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources ...
>
State of California October 2011 Vapor Intrusion Guidance Document – Final DTSC – Cal/EPA v Pursuant to Senate Bill 32 (SB 32, Stats. 2001, Ch. 764), the California Land Environmental Restoration and Reuse Act, the Office
To address the above, the agencies recommend following the 2011 DTSC Vapor Intrusion Guidance, the 2011 DTSC Vapor Intrusion Mitigation Advisory and the 2015 EPA Technical Guide for Assessing and ...
State of California DTSC / Cal - EPA Vapor Intrusion Guidance Document – Final Interim December 15, 2004 vi • Removing VOC contamination through site remediation (cleanup). • Installing passive or active vent systems
State of California October 2011 Vapor Intrusion Guidance Document – Final DTSC – Cal/EPA v Pursuant to Senate Bill 32 (SB 32, Stats. 2001, Ch. 764), the California Land Environmental Restoration and Reuse Act, the Office
State of California DTSC / Cal - EPA Vapor Intrusion Guidance Document – Final Interim December 15, 2004 vi • Removing VOC contamination through site remediation (cleanup). • Installing passive or active vent systems