8D
Date: April 8, 2025
To: Honorable Mayor and Members of the City Council
From: Aram Chaparyan, City Manager
By: Carlos Huizar, Management Associate | [email protected] Subject: City Manager – Approve First Amendment to Consulting Service s Agreement for Torrance Regional Transit Center Soil Management Plan. Expenditure: $227,000 (General Fund).
RECOMMENDATION
Recommendation of the City Manager that City Council approve a first amendment to the consulting services agreement with GSI Environmental, Inc. of Houston, Texas (C2023 -023), in the amount of $227,000 , for a new not-to-exceed amount of $317,000, for Torrance Regional Transit Center Soil Management Plan and to extend the contract term for an additional one-year period beginning March 1, 2025 and ending February 28, 2026.
FUNDING
Funding is available from OP41-4030-OP0001 - Remediate Soil at RTC Site Project.
DISCUSSION
On November 15, 2022, City Council approved projects and appropriated funding from the Land Management Signing Fee Revenue Fund to fund critical projects. Of those projects, $100,000 was appropriated towards the Regional Transit Center (RTC) Deed Restriction Removal Guidance Effort.
Site Background
Prior to the City’s acquisition, PPG Industries (PPG) occupied the 13.3-acre site at 465 Crenshaw Boulevard from 1950 to 2000, where it manufactured paint coatings and resins. In 2000, all on-site structures and fixtures were demolished and removed. Under the oversight of the California Department of Toxic Substances Control (DTSC), environmental sampling and remediation efforts were conducted, culminating in the recording of a Covenant to Restrict Use of Property, Environmental Restriction (LUC) on May 21, 2010. Due to residual metal contaminants in the soil exceeding residential cleanup thresholds, the site was restricted to industrial and commercial use. However, prior remediation efforts successfully met industrial cleanup standards.
In preparation for future development, soil was over-excavated and recompacted up to five feet, with additional infill of up to eight feet placed. The Mary K. Giordano Regional Transit Center was constructed and opened to the public on June 9, 2023.
1 City Council
April 8, 2025
Soil Management Plan and Implementation
To facilitate the removal of the land use covenant and support unrestricted land development, the City entered into a consulting services agreement (C2023-023) with GSI Environmental, Inc. on March 1, 2023. The consultant was tasked with coordinating discussions with DTSC and preparing a Soil Management Plan (SMP) for the RTC site. Over the past 18 months, GSI has collaborated with DTSC, culminating in DTSC’s approval of the SMP on January 14, 2025.
To fully implement the SMP, the City and GSI wishes to execute the First Amendment to the Consulting Services Agreement (C2023-023). This amendment:
1. Extends the contract term through February 28, 2026, ensuring sufficient time for investigative work.
2. Allocates an additional $227,000, increasing the total contract amount to an amount not-to-exceed of $317,000, to fund all necessary work for SMP implementation.
3. Authorizes further site investigation and soil sampling to delineate the lateral and vertical extent of contamination exceeding residential screening levels.
Staff recommends that the City Council approve the First Amendment to Consulting Services Agreement (C2023-023) with GSI Environmental, Inc., which includes a one-year extension of the contract term through February 28, 2026, and an increase in compensation of $227,000, for a new total not-to-exceed amount of $317,000. This amendment will allow for the completion of the full implementation of the Soil Management Plan (SMP) and the necessary remediation efforts required to facilitate the revocation of the Land Use Covenant (LUC). These actions will enable further development opportunities at the site and ensure the c ontinued success of the Mary K.
Giordano Regional Transit Center project.
ATTACHMENTS
1. First Amendment to Consulting Services Agreement (C2023-23)
2. Consulting Services Agreement (C2023-23)
3. Soil Management Plan (Limited Distribution)
4. DTSC Approval Letter (Limited Distribution)
2 3
ATTACHMENT 1
4 5
6 7
8 A
CONSULTING SERVICES AGREEMENT
This CONSULTING SERVICES AGREEMENT ("Agreement") is made and entered into as of March 1,2023 (the "Effective Date"), by and between the CITY OF TORRANCE, a municipal corporation ("C|TY"), and GSI Environmental, Inc., a Texas corporation ('coNSULTANT").
REGITALS:
CITY wishes to retain the services of an experienced and qualified CONSULTANT to prepare and implement a Soil Management Plan (SMP) for the former PPG lndustries site located at 465 Crenshaw Boulevard, Torrance, CA, and assist the City in coordinating with the Department of Toxic Substance Control (DTSC) in revoking a Land Use Covenant (LUC) in support of unrestricted land use redevelopment.
B. CONSULTANT represents that it is qualified to perform those services AGREEMENT:
1 SERVICES TO BE PERFORMED BY CONSULTANT
CONSULTANT will provide the services listed in the Scope of Services attached as Exhibit A. CONSULTANT warrants that all work and services set forth in the Scope of Services will be performed in a competent, professional and satisfactory manner.
TERM
Unless earlier terminated in accordance with Paragraph 4 below, this Agreement will continue in full force and effect from the Effective Date through February 28, 2025.
COMPENSATION
A. CONSULTANT's Fee
For services rendered pursuant to this Agreement, CONSULTANT will be paid in accordance with the Compensation Schedule attached as Exhibit B, provided, however, that in no event will the total amount of money paid CONSULTANT, for services initially contemplated by this Agreement, exceed the sum of $90,000 ("Agreement Sum"), unless otherwise first approved in writing by CITY.
B. Schedule of Payment.
Provided that CONSULTANT is not in default under the terms of this Agreement, upon presentation of an invoice, CONSULTANT will be paid the fees described in Paragraph 3.4. above, according to the <?
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9 ATTACHMENT 2
Compensation Schedule. Payment will be due within 30 days after the date of the invoice.
4. TERMINATION OF AGREEMENT
A. Termination by CITY for Convenience
Clry may, at any time, terminate the Agreement for CITY's convenience and without cause.
2 Upon receipt of written notice from CITY of such termination for CITY's convenience, CONSULTANT will:
cease operations as directed by CITY in the notice;
take actions necessary, or that CITY may direct, for the protection and preservation of the work; and
except for work directed to be performed prior to the
effective date of termination stated in the notice, terminate all existing subcontracts and purchase orders and enter into no further subcontracts and purchase orders.
ln case of termination for CITY's convenience, CONSULTANT will be entitled to receive payment for work executed, together with costs incurred by reason of the termination, along with reasonable overhead and profit on work not executed.
B. Termination for Cause
lf either party fails to perform any term, covenant or condition in this Agreement and that failure continues for 15 calendar days after the nondefaulting party gives the defaulting party written notice of the failure to perform, this Agreement may be terminated for cause; provided, however, that if during the notice period the defaulting party has promptly commenced and continues diligent efforts to remedy the default, the defaulting party will have such additional time as is reasonably necessary to remedy the default.
ln the event this Agreement is terminated for cause by the default of CONSULTANT, CITY may, at the expense of CONSULTANT
and its surety, complete this Agreement or cause it to be completed. Any check or bond delivered to the CITY in connection with this Agreement, and the money payable thereon, will be forfeited to and remain the property of the CITY. All moneys due CONSULTANT under the terms of this Agreement will be retained by CITY, but the retention will not release CONSULTANT and its surety from liability for the default. Under these circumstances, however, CONSULTANT and its surety will be credited with the amount of money retained, toward any amount by which the cost of 1 a.
b.
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10 completion exceeds the Agreement Sum and any amount
authorized for extra services.
Termination for cause will not affect or terminate any of the rights of CITY as against CONSULTANT or its surety then existing, or that may thereafter accrue because of the default; this provision is in addition to all other rights and remedies available to the CITY under law.
C. Termination for Breach of Law
ln the event CONSULTANT or any of its officers, directors, shareholders, employees, agents, subsidiaries or affiliates is convicted (i) of a criminal offense as an incident to obtaining or attempting to obtain a public or private contract or subcontract, or in the performance of a contract or subcontract; (ii) under state or federal statutes of embezzlement, theft, forgery, bribery, falsification or destruction of records, receiving stolen property, or any other offense indicating a lack of business integrity or business honesty that currently, seriously, and directly affects responsibility as a public consultant or CONSULTANT; (iii) under state or federal antitrust statutes arising out of the submission of bids or proposals; or (iv) of violation of Paragraph 19 of this Agreement; or for any other cause CITY determines to be so serious and compelling as to affect CONSULTANT's responsibility as a public consultant or CONSULTANT, including but not limited to, debarment by another governmental agency, then CITY reserves the unilateral right to terminate this Agreement or to impose such other sanctions (which may include financial sanctions, temporary suspensions or any other condition deemed appropriate short of termination) as it deems proper. CITY will not take action until CONSULTANT has been given notice and an opportunity to present evidence in mitigation.
5. FORCE MAJEURE
lf any party fails to perform its obligations because of strikes, lockouts, labor disputes, embargoes, acts of God, inability to obtain labor or materials or reasonable substitutes for labor or materials, governmental restrictions, governmental regulations, governmental control, judicial orders, enemy or hostile governmental action, civil commotion, fire or other casualty, or other causes beyond the reasonable control of the party obligated to perform, then that party's performance will be excused for a period equal to the period of that cause for failure to perform.
6. RETENTION OF FUNDS
CONSULTANT authorizes CITY to deduct from any amount payable to CONSULTANT (whether or not arising out of this Agreement) any amounts the payment of which may be in dispute or that are necessary to compensate CITY for any losses, costs, liabilities, or damages suffered by CITY, and all amounts for which CITY may be liable to third parties, by reason of CONSULTANT's acts 3 3[00395789.docx]
11 8
or omiss¡ons in performing or failing to perform CONSULTANT's obligations under this Agreement. ln the event that any claim is made by a third party, the amount or validity of which is disputed by CONSULTANT, or any indebtedness exists that appears to be the basis for a claim of lien, CITY may withhold from any payment due, without liability for interest because of the withholding, an amount sufficient to cover the claim. The failure of CITY to exercise the right to deduct or to withhold will not, however, affect the obligations of CONSULTANT to insure, indemnify, and protect CITY as elsewhere provided in this Agreement.
7. CITY REPRESENTATIVE
Danny Santana, Assistant City Manager is designated as the "City Representative," authorized to act in its behalf with respect to the work and services specified in this Agreement and to make all decisions in connection with this Agreement. Whenever approval, directions, or other actions are required by CITY under this Agreement, those actions will be taken by the City Representative, unless othenruise stated. The City Manager has the right to designate another City Representative at any time, by providing notice to CONSULTANT.
CONSULTANT REPRESENTATIVEIS)
The following principal(s) of CONSULTANT are designated as being the principal(s) and representative(s) of CONSULTANT authorized to act in its behalf with respect to the work specified in this Agreement and make all decisions in connection with this Agreement:
Farid Achour, Ph.D PG, Principal Hydrogeologist
Bita Tabatabai, PE, Principal Engineer
9. INDEPENDENT CONTRACTOR
CONSULTANT is, and at all times will remain as to CITY, a wholly independent contractor. Neither CITY nor any of its agents will have control over the conduct of CONSULTANT or any of CONSULTANT's employees, except as otherwise set forth in this Agreement. CONSULTANT's agents and employees are not and shall not be considered employees of CITY for any purpose. CONSULTANT may not, at any time or in any manner, represent that it or any of its agents or employees are in any manner agents or employees of CITY. CITY has no duty, obligation, or responsibility to CONSULTANT's agents or employees under the Affordable Care Act. CONSULTANT is solely responsible for any tax penalties associated with the failure to offer affordable coverage to its agents and employees under the Affordable Care Act and any other liabilities, claims and obligations regarding compliance with the Affordable Care Act with respect to CONSULTANT's agents and employees. CITY is not responsible and shall not be held liable for CONSULTANT's failure to comply with CONSULTANT's duties, obligations, and responsibilities under the Affordable Care Act. CONSULTANT agrees to defend, indemnify and hold CITY harmless for any and alltaxes and penalties that may be assessed against CITY as a result of CONSULTANT's obligations under the Affordable Care Act relating to CONSULTANT's agents and employees.
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12 IO. BUSINESS LICENSE
CONSULTANT must obtain a City business license prior to the start of work under this Agreement, unless CONSULTANT is qualified for an exemption.
11. OTHER LICENSES AND PERMITS
CONSULTANT warrants that it has all professional, contracting and other permits and licenses required to undertake the work contemplated by this Agreement.
12. FAMILIARITY WITH WORK
By executing this Agreement, CONSULTANT warrants that CONSULTANT (a) has thoroughly investigated and considered the scope of services to be performed, (b) has carefully considered how the services should be performed, and (c) fully understands the facilities, difficulties and restrictions attending performance of the services required under this Agreement. lf the services involve work upon any site, CONSULTANT warrants that CONSULTANT has or will investigate the site and is or will be fully acquainted with the conditions there existing, prior to commencement of the services set forth in this Agreement.
Should CONSULTANT discover any latent or unknown conditions that will materially affect the performance of the services set forth in this Agreement, CONSULTANT must immediately inform CITY of that fact and may not proceed except at CONSULTANT's risk until written instructions are received from CITY. t3. CARE OF WORK
CONSULTANT must adopt reasonable methods during the term of the Agreement to furnish continuous protection to the work, and the equipment, materials, papers, documents, plans, studies and other components to prevent losses or damages, and will be responsible for all damages to persons or property, until acceptance of the work by CITY, except those losses or damages as may be caused by CITY's own negligence.
14. GONSULTANT'S ACCOUNTING RECORDS: OTHER PROJECT RECORDS Records of CONSULTANT's time pertaining to the project, and records of accounts between CITY and CONSULTANT, will be kept on a generally recognized accounting basis. CONSULTANT will also maintain all other records, including without limitation, specifications, drawings, progress reports and the like, relating to the work and services identified in Exhib¡t A. All records will be availabte to CITY during normalworking hours. CONSULTANT will maintain these records for three years after final payment.
15. INDEMNIFICATION
To the fullest extent permitted by law, CONSULTANT shall indemnify, defend and hold harmless Agency and any and all of its officials, officers, employees, agents, successors, and volunteers ("lndemnified Parties") from and against any and all claims, actions, lawsuits, arbitration proceedings, losses, liabilities, damages, costs and expenses, including reasonable attorney's fees and costs, to the extent they arise out of, pertain to, or relate to the negligence, recklessness, or willful misconduct of the CONSULTANT. CONSULTANT's duty to defend any 5[00395789.docx]
13 claim, action, lawsuit, or arbitration proceeding (collectively, "Claim") shall consist of reimbursement of defense costs incurred by Agency in direct proportion to the CONSULTANT's proportionate percentage of fault concerning such Claim.
Notwithstanding the previous sentence: (1) in the event one or more defendants is unable to pay its share of defense costs due to bankruptcy or dissolution of the business then the design professional shall meet and confer with other parties regarding unpaid defense costs and shall be liable for any such defense costs allowable by law; (2) CONSULTANT's duty to defend any Claim shall consist of reimbursement of all defense costs where a project-specific general liability policy insures all project participants for general liability exposures on a primary basis and also covers all design professionals for their legal liability arising out of their professional services on a primary basis.
I6. NON-LIABILITY OF CITY OFFICERS AND EMPLOYEES
No officer or employee of CITY will be personally liable to CONSULTANT, in the event of any default or breach by the CITY or for any amount that may become due to CONSULTANT.
17. INSURANCE
A CONSULTANT and its subCONSULTANTS must maintain for the duration of the Agreement at their sole expense the following insurance, which will be full coverage, not subject to self-insurance provisions:
1 Automobile Liability, including owned, non-owned and hired vehicles, with at least the following limits of liability:
a Primary Bodily lnjury with limits of at least $500,000 per person, $1,000,000 per occurrence; and
Primary Property Damage of at least $250,000 per
occurrence; or
c. Combined single limits of $1,000,000 per occurrence
Commercial General Liability including coverage for premises, products and completed operations, independent
CONSULTANTs/vendors, personal injury and contractual
obligations with combined single limits of coverage of at least $2,000,000 per occurrence, $4,000,000 aggregate.
Workers' Compensation coverage as required by the Labor Code of the State of California and, if workers' compensation is required, employer's liability insurance with minimum limits of ($t,000,000) per occurrence or occupational illness. The Workers' Compensation policy shall be endorsed with a waiver of subrogation in favor of the CITY for all work performed by the CONSULTANT, its employees, agents and subcontractors.
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4 Professional Liability (Errors and Om issions) : I nsu rance appropriate to the CONSULTANT's profession, with limit no less than $2,000,000 per occurrence or claim, $4,000,000 aggregate.
The insurance provided by CONSULTANT will be primary and non- contributory.
CITY, the Successor Agency to the Former Redevelopment Agency of the City of Torrance, the City Council and each member thereof, members of boards and commissions, every officer, agent, official, employee and volunteer must be named as additional insureds under the automobile and general liability policies. Coverage can be provided in the form of an endorsement to the CONSULTANT's insurance or applicable policy language.
CONSULTANT must provide certificates of insurance including all required amendatory endorsements (or copies of the applicable policy language effecting coverage required by this clause) indicating appropriate coverage, to the City Clerk of the City of Torrance before the commencement of work.
Each insurance policy required by this Paragraph must contain a provision that no termination, cancellation or change of coverage can be made without notice to the CITY.
lf the CONSULTANT maintains broader coverage and/or higher limits than the minimums shown above, the CITY requires and shall be entitled to the broader coverage and/or the higher limits maintained by the CONSULTANT. Any available insurance proceeds in excess of the specified minimum limits of insurance and coverage shall be available to the CITY.
The procuring of insurance shall not be construed as a limitation on liability nor as full performance of the indemnification provisions of the CONSULTANT.
Claims Made Policies
lf any of the required policies provide coverage on a claims-made basis:
a. The Retroactive Date must be shown and must be before the date of the contract or the beginning of contract work.
b. Insurance must be maintained and evidence of insurance must be provided for at /easf five (5) years after completion of the contract of work. c. lf coverage is canceled or non-renewed, and not replaced with another claims-made policy form with a Retroactive Date prior to the contract effective date, the CONSULTANT must purchase "extended reporting" coverage for a minimum of five (5) years after completion of contract work.
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15 CONSULTANT hereby grants to CITY a waiver of any right to subrogation which any insurer of said CONSULTANT may acquire against the CITY by virtue of the payment of any loss under such insurance. CONSULTANT agrees to obtain any endorsement that may be necessary to affect this waiver of subrogation, but this provision applies regardless of whether or not the CITY has received a waiver of subrogation endorsement from the insurer.
I8. SUFFICIENCY OF INSURERS
lnsurance required by this Agreement will be satisfactory only if issued by companies admitted to do business in California, rated "A" or better in the most recent edition of Best's Key Rating Guide, and only if they are of a financial category Class Vll or better, unless these requirements are waived by the Risk Manager of CITY ("Risk Manager") due to unique circumstances. In the event the Risk Manager determines that the work or services to be performed under this Agreement creates an increased or decreased risk of loss to CITY, the CONSULTANT agrees that the minimum limits of any insurance policies or performance bonds required by this Agreement may be changed accordingly upon receipt of written notice from the Risk Manager; provided that CONSULTANT will have the right to appeal a determination of increased coverage by the Risk Manager to the City Council of CITY within 10 days of receipt of notice from the Risk Manager.
GONFLICT OF INTEREST
A. No officer or employee of the CITY may have any financial interest, direct or indirect, in this Agreement, nor may any officer or employee participate in any decision relating to the Agreement that affects the officer or employee's financial interest or the financial interest of any corporation, partnership or association in which the officer or employee is, directly or indirectly interested, in violation of any law, rule or regulation.
No person may offer, give, or agree to give any officer or employee or former officer or employee, nor may any officer or employee solicit, demand, accept, or agree to accept from another person, a gratuity or an offer of employment in connection with any decision, approval, disapproval, recommendation, preparation or any part of a program requirement or a purchase request, influencing the content of any specification or procurement standard, rendering of advice, investigation, auditing, or in any other advisory capacity in any way pertaining to any program requirement, contract or subcontract, or to any solicitation or proposal.
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B.
20. NOTICE
A. All notices, requests, demands, or other communications under this Agreement will be in writing. Notice will be sufficiently given for all purposes as follows:
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16 SOIL MANAGEMENT PLAN
FORMER PPG INDUSTRIES
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Prepared for:
City of Torrance
3031 Torrance Boulevard
Torrance, California 90503
310-618-5880
Prepared by:
GSI Environmental Inc.
7595 Irvine Center Dr, Suite 250
Irvine, California 92618
949.679.1070
GSI Job No. 6609
Issued: December 2, 2024
17 ATTACHMENT 3
GSI Job No. 6609
Issued: December 2, 2024
465 Crenshaw Boulevard
Torrance, CA
-i- Soil Management Plan
Former PPG Industries
SOIL MANAGEMENT PLAN
465 Crenshaw Boulevard
Torrance, California
PROFESSIONAL CERTIFICATION
This Soil Management Plan was prepared by the staff of GSI Environmental Inc. (GSI), under the supervision of the Geologist(s) and/or Engineer(s) whose signatures appear hereon.
The findings, recommendations, specifications, or professional opinions were prepared in accordance with generally accepted professional engineering and/or geologic practice. No warranty is expressed or implied.
Bita Tabatabai, PE
Vice President/Principal Engineer
Farid Achour, PhD, PG
Vice President/Principal Hydrogeologist
18 GSI Job No. 6609
Issued: December 2, 2024
SOIL MANAGEMENT PLAN
465 Crenshaw Boulevard
Torrance, California
TABLE OF CONTENTS
465 Crenshaw Boulevard
Torrance, CA
-ii- Soil Management Plan
Former PPG Industries
1.0 INTRODUCTION ............................................................................................................ 1
2.0 MANAGEMENT OF THE SMP ....................................................................................... 2
3.0 BACKGROUND ............................................................................................................. 2 Site Setting ......................................................................................................... 2 Historical Use ...................................................................................................... 3 Site Hydrogeology ............................................................................................... 3 Environmental Assessments ............................................................................... 3 Site-Wide Soil Investigation ..................................................................... 4 Site-Wide Groundwater Investigation ...................................................... 4 Remediation and Completion Report ....................................................... 4 Land Use Covenant (LUC) – May 2010 .............................................................. 4 Grading and Fill During Transit Center Development .......................................... 5 Soil Sampling to be Conducted Prior to Redevelopment ..................................... 5
4.0 SAMPLING PLAN AND EXCAVATIONS ....................................................................... 5 Objective and Screening Criteria ......................................................................... 5 Mobilization/Pre-Field Preparation ...................................................................... 5 Field Records ...................................................................................................... 6 Decontamination Activities .................................................................................. 7 Soil and Soil Vapor Sampling Rationale and Plan ............................................... 7 Excavation and Post-Excavation Confirmation Sampling .................................... 8 Reporting ............................................................................................................ 9
5.0 SOIL MANAGEMENT – POST-SAMPLING PROGRAM ............................................... 9 Contractor Health & Safety ................................................................................. 9 Regulatory Requirements ................................................................................... 9 Access Control .................................................................................................... 9 General Soil Handling Guidelines – Potentially-Affected Soil and Import ...........10 Grading Observation, Monitoring, and Soil Screening ........................................ 10 SCAQMD Rule 403 – Dust Monitoring .................................................... 11 SCAQMD Rule 1166 Permitting and Monitoring – VOC-impacted Soils .11 SCAQMD Rule 1466 Permitting and Monitoring – Heavy Contaminants 11 Stockpiled Soil Characterization ............................................................. 11 Disposal Facility ..................................................................................... 12 Documentation ....................................................................................... 12 Equipment Decontamination................................................................... 13 Unanticipated Conditions ................................................................................... 13 Management of Open Excavations during Grading/Redevelopment Activities ...13 Dust Control ....................................................................................................... 13
6.0 DATA MANAGEMENT AND REPORTING ................................................................... 14 Quality Assurance/Quality Control ..................................................................... 14 19 GSI Job No. 6609
Issued: December 2, 2024
SOIL MANAGEMENT PLAN
465 Crenshaw Boulevard
Torrance, California
TABLE OF CONTENTS
465 Crenshaw Boulevard
Torrance, CA
-iii- Soil Management Plan
Former PPG Industries
Field Records ..................................................................................................... 14
7.0 REPORTING ................................................................................................................. 14
8.0 CONTACT INFORMATION ........................................................................................... 14
9.0 REFERENCES .............................................................................................................. 15
TABLES
Table 1: Soil Vapor – Residential Screening Levels for VOCs Table 2: Soil – Residential Screening Levels for Volatile Organic Compounds (VOCs) Table 3: Soil – Residential Screening Levels for Metals Table 4: Soil – Residential Screening Levels for Total Petroleum Hydrocarbons (TPH) Table 5: Soil – Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Table 6: Soil – Residential Screening Levels for Polycyclic Aromatic Hydrocarbons (PAHs) Table 7: Soil – Residential Screening Levels for Polychlorinated Biphenyls (PCBs) Table 8: Soil – Residential Screening Levels for Dioxins and Furans
FIGURES
Figure 1. Site Location Map
Figure 2. Location of 2009 Soil Remedial Action Excavations Figure 3. Proposed Sampling Locations
APPENDICES
Appendix A. SMP Responsible Parties Contact Information Appendix B. Soil Management Plan Acknowledgment Form
Appendix C. Site-Specific Health and Safety Plan (HASP
Appendix D. Disposal Facilities Location Map
20 GSI Job No. 6609
Issued: December 2, 2024
465 Crenshaw Boulevard
Torrance, CA
-1- Soil Management Plan
Former PPG Industries
SOIL MANAGEMENT PLAN
465 Crenshaw Boulevard
Torrance, California
1.0 INTRODUCTION
On behalf of the City of Torrance (City), GSI Environmental Inc. (GSI) has prepared this Soil Management Plan (SMP) for the property located at 465 Crenshaw Boulevard , Torrance, California (Site), which includes Assessor Parcel Numbers 7352-002-911, 7352 -002-912, 7352-002-913, and 7352 -002-914. The Site is known as the Former PPG Industries/Torrance Regional Transit Center (Figure 1). The City acquired the property in December 2009.
Prior to the City’s acquisition, PPG Industries (PPG) occupied the 13.3-acre Site from 1950 to 2000 and manufactured paint coatings and resins. In 2000, the PPG on -Site structures and fixtures were demolished and removed. Under the oversight of the California Department of Toxic Substances Control (DTSC), sampling and remedial activities were conducted, cumulating in a “Covenant to Restrict Use of Property, Environmental Restriction” (LUC) being recorded for the Site on May 21, 2010. The use of the Site was restricted to industrial/commercial activities due to impacts in soil for metals that exceeded residential cleanup goal. The soil removal actions were successful in achieving industrial cleanup goals.
In preparation of the development, soil was over excavated and recompacted up to 5 feet, and infill of up to 8 feet was placed. The Mary K Giordano Torrance Regional Transit Center (also known as the Torrance Transit Center), which is operated by the Torrance Transit System (6.68 acres) was constructed . The grand opening of the Torrance Transit Center was on June 9, 2023.
The City would like to further develop the Site for beneficial use by the public and to provide City services to the community, opening the door to diverse and community-focused redevelopment.
The City is seeking to rescind the May 2010 LUC to facilitate additional development options for the Site. In this effort, this comprehensive SMP includes a soil sampling plan to identify the lateral and vertical extent of soil impacts that exceed residential screening levels. As requested by the DTSC, a full assessme nt of the Site will be conducted to identify areas with contaminants exceeding residential risk assessment, Regional Screening Levels (RSLs), or HERO notes. The sampling includes a Site-wide grid soil sampling program and additional points at historical excavation areas. These results will be evaluated to identify areas that exceed acceptable residential concentrations. The results and recommendations will be presented to the DTSC. If warranted, areas of soil exceedances will be excavated under the oversight of the DTSC. This SMP includes responses to the DTSC’s comment letter dated October 14, 2024.
After completion of the soil sampling program, a technical memorandum will be submitted, which will include the evaluation of the soil sampling results and the proposed excavation areas.
Following interactions with the DTSC with respect to the 2021 LUC and DTSC concurrence, the protocols in this SMP and modifications included in the technical memorandum, if any, will be implemented during future redevelopment of the Site. Procedures presented in the SMP include the management of suspected and/or identified impacted soil, unknown subsurface structures, and/or debris discovered during Site earthwork or grading activities. 21 GSI Job No. 6609
Issued: December 2, 2024
465 Crenshaw Boulevard
Torrance, CA
-2- Soil Management Plan
Former PPG Industries
2.0 MANAGEMENT OF THE SMP
Under the oversight of the DTSC, the “SMP Team” members are responsible for implementation of the SMP. The SMP Team members include:
• SMP Manager
• Owner/Developer Project Manager
• Waste Manifest Signatory
• State-Licensed Professional Engineer (PE) or Professional Geologist (PG) responsible for oversight of SMP implementation and reporting activities (the Environmental Professional or EP)
• DTSC, Oversight Agency
• Contractors (general excavation and grading contractors) • Additional Members: P roject Geotechnical Engineer (GE) and geotechnical field technician(s), as well as other related project engineers, technicians, and waste disposal professionals
The SMP Team members and contact information are listed in Appendix A. The SMP Acknowledgment Form is included as Appendix B. Short-term contractors may access the Site who may not be included in the SMP Team and may include those accessing public utilities such as electricity, sewer, water, gas, etc. Short-term contractors will be provided a copy of the SMP, as appropriate for their scope of work.
SMP Team members will acknowledge that they have read, understood, and agreed to implement the SMP. 1 Project contractors will also confirm that they hold the appropriate licenses and certifications to implement the SMP. A pre -field meeting should be conducted prior to Site construction and redevelopment activities that will include, at a minimum, all of the SMP Team members identified in Appendix A.
The SMP Manager will communicate SMP updates to the SMP Team and document the receipt of such communications. 2 At the discretion of the SMP Manager, additional meetings will be conducted prior to implementation of specific work activities , as necessary. Updated contact information will be stored with the SMP Manager.
3.0 BACKGROUND
This section includes information for project contractors and Site workers to understand environmental impacts at the Site and residual chemical impacts to soil and soil vapor that may be encountered during grading and conducting subsurface activities. The information in this section provides the basis for establishing contractor -specific health and safety plan ( HASP), notifications, permits, and monitoring requirements during grading and conducting subsurface activities, and rationale for soil management procedures presented in this SMP.
Background information on historical Site use, setting, and prior environmental Site assessments are provided in the following sections.
Site Setting
The Site is approximately 13.3 acres in size and located at 465 Crenshaw Boulevard, Torrance, California. Historically the Site was occupied by PPG. Former PPG areas are identified on Figure 2, as an overlay on the current layout of the Site. Currently, the Site is partially redeveloped (6.68 acres) as the Mary K . Giordano Regional Transit Center with a main building and paved
1 The SMP will be provided to the SMP Team members in digital or hard-copy form. 2 Communication by email does not require acknowledgement as receipt, but text communications should be acknowledged by the recipient.
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surface parking areas and driveways. The current layout of the Site is shown on Figure 3.
Surrounding properties are mixed commercial and residential.
Historical Use
The Site was previously owned and occupied by PPG which operated as a manufacturing facility producing aqueous and solvent based paints and synthetic resins for industrial and automotive clients from 1950 to 2000 (Figure 2). Manufacturing operations were scaled down in 1999 to distribution only, in preparation for their closure and demolition of the facility. All prior structures and fixtures at the Site related to PPG were demolished and removed in 2000.
Site Hydrogeology
Based on previous Site assessment reports from Earth Tech AECOM (Earth Tech AECOM, 2010) “The Site is located in the southwestern portion of the Los Angeles Basin, north of the Palos Verdes Hills, and east of the El Segundo Sand Hills. The generalized shallow stratigraphy of this portion of the Los Angeles Basin is Holocene alluvium and Pleistocene sediments of the informal Older Dune Sand Formation at the surface, underlain in sequence by the upper Pleistocene Lakewood Formation and the lower Pleistocene San Pedro Formation. The Older Dune Sand consists primarily of sand with minor silt, clay, and gravel lenses (California Department of Water Resources [DWR], 1961). The Lakewood and San Pedro Formations are generally composed of interbedded silty sand, sand, clay, and gravel (DWR, 1961).
The uppermost named aquifer is the Gage aquifer (Gage) within the Lakewood Formation.
The top of the Gage sand occurs at approximately 40 feet bgs. The sands become saturated at approximately 85 feet bgs beneath the property. The groundwater flow direction in the Gage in the Site vicinity is toward east to northeast at a horizontal gradient of approximately 0.007 feet per linear foot (ft/ft). A perched aquifer has been reported at approximately 30 feet bgs at the Exxon-Mobil Oil refinery, north of the facility.”
Environmental Assessments
PPG formerly occupied the Site from approximately 1950 until 2000. Prior to vacating the Site, multiple subsurface investigations including soil removal and groundwater remediation, and monitoring activities were conducted. Site demolition began in 2000, and all fixtures and structures were removed that same year. A detailed history of demolition, soil removal, groundwater remediation , and monitoring activities is described in the Site-Wide Soil and Groundwater Investigation Report (SWI Report, Earth Tech, 2007).
Site-wide soil and groundwater investigation (SWI) commenced in March 2007 and concluded in July 2008. Two phases (March – September 2007 and June – July 2008) of sampling events were conducted. The SWI supplemented previous soil sampling events at the Sit e. The 2007 phase included 128 soil sampling locations, 52 soil vapor sampling locations, and groundwater sampling from four on -Site groundwater monitoring wells. Sampling analysis included volatile organic compounds ( VOCs), metals, total petroleum hydrocarbons (TPH), semi -volatile organic compounds (SVOCs), poly-cyclic aromat ic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and dioxins/furans. A total of 34 areas of investigation (AOIs) were identified in the SWI workplan. The AOIs addressed potential sources of contaminants of concern (COCs) including chemical storage tanks, drum and raw material storage areas, waste handling areas, loading dock areas, cleaning areas, resin plant, sumps, clarifiers, and storm water collection areas.
Residential screening levels for soil vapor are shown in Table 1. Residential screening levels for soil for VOCs, metals, TPH, SVOCs, PAHs, PCBs, and dioxin s/furans are shown in Tables 2 through 8, respectively.
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Site-Wide Soil Investigation
Between 2007 and 2008 a total of 588 soil samples were collected from 146 soil borings throughout the 34 AOIs. In 2008, a total of 114 soil samples were collected from 24 soil borings advanced to a depth of 25 -feet (ft) below ground surface (bgs) . Soil samples from the 34 AOIs were used to characterize the potential COCs including VOCs, SVOCs, TPH, PAHs, PCBs, and dioxins/furans. Additionally, VOCs in soil vapor were characterized at 52 locations with vapor probes set at 5 and 15 ft bgs. The results of the SWI were used to successfully cover data gaps.
The SWI identified infrequent and low concentrations of the Site COCs with the exception of TPH in Areas 1 and 3. Detections of COCs that exceeded regulatory screening levels were detected in shallow soils in Areas 8, 15, 21, and the former transformer storage area. These AOIs were subsequently removed in the removal action performed in 2009.
Site-Wide Groundwater Investigation
Groundwater monitoring was conducted at the Site throughout 2001 until 2008 under the oversight of the Los Angeles Regional Water Quality Control Board (LARWQCB) and the DTSC.
In 2008, three groundwater monitoring wells were installed at the Site for a total of 17 groundwater monitoring wells (at the Site and downgradient). Monitoring results showed that groundwater was impacted with low-level VOCs (up to 30 micrograms per liter [µg/L] of trichloroethene [TCE]).
Remediation and Completion Report
In 2009, PPG implemented a Removal Action Workplan (RAW) which included 6 excavation areas to remove contaminated soil identified during 2008 investigations . A Human Health Risk Assessment (HHRA), dated July 10, 2009, was submitted to the DTSC and approved by DTSC on August 31, 2009. The Removal Action Completion Report (RACR) included a land use covenant (LUC) to be recorded with the County of Los Angeles to restrict the future use of the entire Site to commercial/industrial purposes. The DTSC concurred and the Ci ty and DTSC prepared the LUC which was recorded on May 21, 2010.
Land Use Covenant (LUC) – May 2010
On May 21, 2010, a “Covenant to Restrict Use of Property, Environmental Restriction” (also known as a LUC) was recorded with the Los Angeles County Recorder’s Office for the Site.
Although the removal action achieved industrial cleanup goals, the LUC is required because concentrations of metals remain that are greater than unrestricted residential cleanup goals in soils at depths of up to 10 feet below the surface at areas described as “isolated”. DTSC concluded that there would be an unacceptable human health risk if the Site was used as a residence, hospital, pre-school, kindergarten, elementary school, middle school, high school or day care center. However, DTSC concluded that use of the Site limited to commercial and industrial uses does not present an unacceptable threat to human health or safety or the environment.
Portions of the Site have been redeveloped as the Mary K. Giordano Torrance Regional Transit Center (Torrance Transit Center) operated by the Torrance Transit System, a municipal transportation agency that serves the public in the South Bay region of Los Angeles County, a commercial land use. The City would like to further develop other portions of the Site for beneficial use by the public and to provide City services to the community. The City is seeking to rescind the May 2010 LUC to facilitate unrestricted development of the Site.
This SMP includes a soil sampling plan to identify the lateral and vertical extent of residual impacts in the soil that exceed residential screening levels. In addition, the sampling program includes soil vapor sampling for VOCs. Soil sampling will include VOCs, metals, and TPH at all locations. At four locations , SVOCs, PAHs, PCBs (including in the former transformer 24 GSI Job No. 6609
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area), and dioxins/furans will be analyzed. Soil samples from other locations may be analyzed for PCBs, SVOCs, PAHS, and dioxins/furans, based on the result of the initial four locations.
The results of the soil sampling program, described in Section 4.0 of this SMP, will be used to identify the areas that exceed residential screening levels and extent of soil to be excavated to address the identified impacts. Soil sampling and excavation activities will be conducted under the oversight of the DTSC.
Grading and Fill During Transit Center Development
During the redevelopment of the Site for the Transit Center, soil was over excavated and recompacted up to 5 feet, followed by placement of up to 8 feet of fill. Therefore, GSI’s proposed depth of the soil borings will extend beyond the depths of historical excavation and the depth of fill placed during Site redevelopment.
Soil Sampling to be Conducted Prior to Redevelopment
Prior to redevelopment activities, soil sampling will be conducted to characterize residual impacts at the Site. The sampling plan is presented in Section 4.0 and includes metals, VOCs, and TPH-full range at all locations shown on Figure 3 . SVOCs, PAHs, PCBs (including the former transformer area, Figure 3, Location number 17), and diox ins/furans will be analyzed at four locations. The SVOCs, PAHs, PCBs, and dioxins/furans will be compared to c urrent residential screening levels, and if needed, soil samples from other locations will be analyzed (Tables 2 to 8).
Based on soil sampling results, impacted soil above residential screening levels will be delineated, excavated to where technically feasible, and properly disposed off-Site. The soil sampling results and proposed areas for excavation will be submitted to DTSC for their concurrence.
4.0 SAMPLING PLAN AND EXCAVATIONS
In an effort to support the request to the DTSC for rescinding the industrial/commercial LUC (2021), soil impacts that exceed residential screening levels will be investigated, and if needed, excavated. Impacts to soil include metals, specifically hexavalent chromium. In addition, the sampling program will include VOCs and TPH-full range at all locations (Figure 3).
Four locations
will be analyzed for PCBs (including the former transformer area, Figure 3, Location number 17), SVOCs, PAHs, and diox ins/furans. These results will be compared to current residential screening levels, and if needed, additional locations analyzed (Tables 2 to 8).
Objective and Screening Criteria
The objective of th e soil and soil vapor sampling program is to identify impacts that exceed residential screening levels that were not addressed during previous remedial efforts. Impacted soil will be designated for excavation. The sample results will be compared to the DTSC-modified Screening Levels (DTSC -SLs) (DTSC, 2022a and 2002b) and United States Environmental Protection Agency (USEPA), Regional Screening Levels (RSLs) (USEPA, 2024).
Mobilization/Pre-Field Preparation
Prior to field work, a Site-specific HASP will be prepared and enforced during sampling activities.
Subcontractors will be required to prepare their own HASP. The potential risks to the personnel performing sampling and excavation activities will be addressed in the HASPs.
Prior to sampling the proposed boring locations will be cleared of underground utilities and other obstructions and Underground Service Alert (USA/DIGALERT) will be notified at least 48 hours prior to intrusive work . USA will contact utility owners of record within the vicinity of the Site to notify them of the intention to conduct subsurface work. The utility owners of record, or their designated agents, will mark the utilities entering the Site. 25 GSI Job No. 6609
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Field Records
Field personnel will complete records of field activities, as appropriate, including daily field notes, field sampling data (record of field measured parameters), and chain -of-custody records with instructions to the laboratory as to the appropriate analytical method/s for each sample.
These field records will be maintained and will include descriptions of the activities conducted, visual and olfactory observations and field measurements, location and type of samples collected, if any, and field equipment calibration logs.
Information shall be recorded on the field notes form on a daily basis. At the begin ning of each day, the start time, weather, field personnel present, level of personnel protection, and na me of the person making the entry will be recorded. Information pertinent to the sampling event will be recorded. At a minimum, as appropriate to the activity, entries will include:
• Description of the sampling location
• Name(s) and title(s) of the field crew
• Name(s) and title(s) of Site visitors
• Type of media being sampled or measured
• Sample depth
• Sample collection or measurement method
• Volume of water purged (if appropriate)
• Number and volume of sample(s) collected
• Description of sample (i.e., grain size, sorting, color, turbidity etc.) • Date and time of collection
• Unique sample identification number
• Duplicate/replicate sample cross-reference identification • Sample preservative
• References to maps
• Field measurements
• References to all pertinent data collection forms
Samples submitted to the analytical laboratory will be accompanied by a chain-of-custody form.
Each chain-of-custody will be prepared in triplicate, and two of the t hree copies will accompany the samples to the laboratory. One copy will be retained in the project file. The chain-of-custody form makes provision for documenting sample integrity and the identity of any personnel involved in sample transfer. Information on the chain-of-custody includes the following:
• Project name and number
• Project location
• Sample numbers
• Sampler/recorder’s signature
• Date and time of collection of each sample
• Sample type
• Analyses requested
• Name of person receiving the sample
• Date of receipt of sample
• Name, address, and telephone number of laboratory
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Sample shipping containers will be sealed in the field with the co mpleted chain-of-custody document inside. The chain-of-custody record will have the signature of the relinquishing field geologist and courier or shipper’s form document tracking number.
If corrections are necessary on the chain-of-custody, these shall be made by drawing a single line through the original entry (in such a manner that the original entry can still be read). The corrected entry shall be written alongside the corrections and shall be initialed and dated.
Decontamination Activities
All equipment that may directly or indirectly contact samples will be decontaminated prior to use.
This includes sampling devices, drill bits, drill rods, and i nstruments. In ad dition, care will be taken to prevent sa mples and sa mpling equipment from coming into contact with p otentially contaminated substances such as fugitive dust, tape, oil, engine exhaust, corroded surfaces, dirt, or airborne source of contamination. A temporary decontamination station shall be set up at the Site to contain decontamina tion water. Deconta mination water will be containerized in Department of Transportation (DOT)-rated drums, or equivalent.
Soil and Soil Vapor Sampling Rationale and Plan
Soil and soil vapor sampling is proposed at areas of historical excavation (pre-2010 LUC areas) and on a grid pattern across the Site. The depth of the soil samples at historical excavations will extend beyond the backfill placed post-excavation as well as the depth of infill. Proposed sample locations are shown on Figure 3. There are 3 sampling groups; locations in the Tarplant Preserve, locations at historical excavations, and locations placed on a grid pattern across the Site.
Sampling in the Tarplant Preserve is subject to approval by the California Department of Fish and Wildlife (CDFW). Upon DTSC’s approval of this SMP, the City of Torrance and GSI will work with CDFW for permission to sample within the Tarplant Preserve.
At each historical excavation areas, soil samples will be collected at the surface (0.5), 2, 5, 10, 15 and 25 feet bgs. Within the Tarplant Preserve and Site-Wide Grid soil samples will be collected at surface (0.5), 5, and 15 feet bgs. 3 Soil to be analyzed for VOCs will be collected per USEPA Method 5035 using a disposable soil sampling tool to minimize volatilization. Disposable sampling tools include Terra Cores, En Core, Easy Draw Syringe, or equivalent products.
Select soil samples collected at the surface (0.5), 5, and 15 feet bgs (the 2, 10, and 25 feet bgs samples will be placed on hold) will be analyzed for:
• VOCs by USEPA 8260B4
• Metals by USEPA Methods 6010B , 7196A or 7199 (for hexavalent chromium), and 7471A (for mercury)
• TPH – full range by USEPA Method 8015M
• SVOCs by USEPA Method 8270C
• PAHs by USEPA Method 8270C/D/E SIM
• PCBs by USEPA Method 8082
• Dioxins/furans by USEPA 8280A, 8290 high resolution MS/GC
3 Permission from the California Department of Fish and Wildlife (CDFW). is necessary prior to sampling in the Tarplant Preserve.
4 Soil to be analyzed for VOCs will be collected per USEPA Method 5035 using a disposable soil sampling tool to minimize volatilization. Disposable sampling tools include Terra Cores, En Core, Easy Draw Syringe, or equivalent products.
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The soil samples collected from depths of 2, 10, and 25 feet will be placed on hold pending the results of surface (0.5), 5, and 15 feet bgs soil samples. Efforts will be made to achieve reporting limits below residential screening levels.
Following soil sample collection at the boring locations, soil vapor probes will be placed and soil vapor sampled at depths of 5 and 15 feet bgs. Two rounds of soil vapor sampling , one before excavation and one post excavation, approximately six months apart, will be conducted prior to removal of the soil vapor probes. Soil vapor probe installation and sampling will be in accordance with DTSC’s Soil Vapor Guidance. Soil vapor will be analyzed for VOCs by USEPA Method 8260B modified and select soil vapor samples for TPH by USEPA TO-3. Efforts will be made to achieve soil vapor reporting limits below residential screening levels derived using an attenuation factor of 0.03.
The soil sample results will be compared to the DTSC-SLs (DTSC, 2022a and 2002b) and USEPA RSLs (USEPA, 2024) to identify areas which exceed residential screening levels for step -out sampling or excavation. For compounds without an established screening level, soil results will be compared to San Francisco Regional Water Quality Control Board’s (SFRWQCB) residential Environmental Screening Levels (ESLs) ; in particular for TPH . Arsenic soil results will be evaluated using HERO Note 11 and lead soil data will be evaluated using regional background concentrations.
Soil vapor will be compared to USEPA RSLs (USEPA, 2024) and SFBRWQCB’s ESLs using an attenuation factor (AF) of 0.03 (DTSC’s 2023 Vapor Intrusion Guidance).
A technical memorandum with the soil and soil vapor sampling results and the proposed excavation areas will be submitted to the DTSC for concurrence prior to excavation activities.
Excavation and Post-Excavation Confirmation Sampling
The initial extent of each excavation area will be identified b ased on the sampling program. At each excavation, confirmation soil samples will be collected to verify the impacted soil has been adequately removed. The soil analytical results will be compared to the screening criteria (DTSC- SLs and RSLs). Additional excavation will be conducted, as needed, based on step-out sampling and confirmation sampling analytical results. Soil sampling frequency and locations are detailed below.
Confirmation Soil Sampling Plan
• Excavation bottom: 20-foot grid (minimum 2 samples)
• Sidewall (minimum 2 samples)
o Depth:
If depth is 10 feet or less: mid-point of sidewall
If depth is greater than 10 feet: one sample at 5 feet depth and one at 14 feet or 1-foot above the bottom of the excavation
o Spacing: every 10 linear feet along the sidewalls
• Analytical Program: same as the Site-wide sampling program o VOCs by USEPA 8260B
• Metals by USEPA Methods 6010B, 7196A or 7199 (for hexavalent chromium), and 7471A (for mercury)
Excavated soil will be stockpiled and profiled for appropriate off -Site disposal. Documentation of the disposition of the soil will be included in the excavation technical memorandum. 28 GSI Job No. 6609
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Reporting
A technical memorandum, which will include the evaluation of the soil vapor and soil sampling results and the proposed excavation areas, will be submitted to the DTSC for concurrence prior to proceeding with excavation activities. This technical memorandum may include modifications to this SMP, if necessary.
Details of the excavations, the results of the confirmation sampling program, and post-excavation soil vapor sampling will be provided to the DTSC in a technical memorandum.
5.0 SOIL MANAGEMENT – POST-SAMPLING PROGRAM
The purpose of the SMP and soil management measures described herein is to provide guidelines to be followed, after the soil sampling program presented in Section 4.0 is complete, during potential excavation, grading, or other soil disturbance activities conducted as part of the redevelopment at the Site. Although areas with impacts or suspected environmental issues have been identified and addressed at the Site (Section 4.0), it is possible that unforeseen impacted soil, subsurface structures, and/or debris could be encountered during grading and development activities at the Site.
The soil management measures presented in this section are to be used by the SMP Team and additional parties involved in activities where disturbance of soil may occur.
Contractor Health & Safety
Each contractor engaged in subsurface disturbance activities shall prepare a HASP for its employees that describes standard safety precautions for workers and protective measures related to subsurface construction activities at the project Site. It is not the intent of this section to outline or provide a comprehensive HASP, but only to establish the requirement that a HASP be developed consistent with applicable federal, state, and local regulations and codes relating to health and safety.
Regulatory Requirements
Grading or earth moving activities may be subject to federal, state, and local laws and regulations, including those promulgated by the USEPA and California EPA (Cal/EPA). These laws address issues such as dust generation, VOC emissions, hazardous waste, storm water, and Community Right-to-Know. While some of these items are discussed in this SMP, it is the responsibility of the general contractor and grading contractor to ensure that grading and excavation activities comply with current applicable laws and regulations.
Access Control
During grading/earth moving activities access is to be controlled and restricted to authorized personnel. If residual impacts remain at the Site, v ehicle and personnel access to areas where potentially affected soil is encountered shall be controlled. Caution tape, cones, steel plates, or other measures shall be used to clearly designate the active area and to prevent access by the public.
Soil that is potentially impacted will be contained in stockpiles. Stockpiles of potentially affected and affected soil shall be covered with plastic sheeting and secured to prevent unauthorized access (Section 5.5.3). Depending on Site conditions and soil management logistics, impacted soil may also be containerized in roll-off soil bins or steel drums (Section 5.5). 29 GSI Job No. 6609
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General Soil Handling Guidelines – Potentially-Affected Soil and Import Prior to grading/redevelopment activities, a reas with remaining impacts or suspected environmental issues at the Site will be identified. However, areas of unforeseen soil impacts could be encountered during redevelopment work. During grading or soil disturbing activities, at a minimum, the following soil handling guidelines will be implemented. These guidelines identify appropriate steps to take to manage soil handling activities. • Identifying Affected Soil. Based on the intended redevelopment of the Site for residential or commercial use, whichever is the intended land use, it is prudent to plan for the potential for previously unidentified impacts to the subsurface. If potentially affected soil is encountered, the SMP Manager and Site EP will be notified, and soil will be handled as described in this document.
• Handling of Potentially Affected Soil During Soil Moving Activities. During excavation, grading or other soil disturbance activities , potentially affected soil shall be placed on plastic sheeting or similar material in a designated stockpile area. Access to stockpile areas should be controlled in a manner to prevent unauthorized persons accessing exposed soil. Potentially affected soil will be segregated and will be screened using the soil screening criteria listed in Section 4.5 for profiling and disposition planning. • Securing Soil Stockpiles (Section 5.5.3 for characterization). Plastic sheeting will be secured on the stockpiles with sandbags or other weighted methods to avoid storm water run-off or wind erosion and provide dust control. Stockpiled soil will be monitored and managed in accordance with South Coast Air Quality Manag ement District (SCAQMD) Rules, including 1166 and 1466, as applicable. 5 Stockpiles will be protected from storm water using temporary perimeter sediment barriers such as berms, fiber rolls, silt fences, sandbags, or straw bale barriers.
• Fill/Import Material. Soil brought to the Site as fill material, in addition to being geotechnically acceptable, shall be characterized to assess whether chemicals may be present in the soil at concentrations exceeding criteria for residential use. Characterization may be based on knowledge of the source (e.g., material directly from a quarry) or analytical results. The Site EP should be consulted for all import material to assess adequacy of analysis of the fill/import soil. The SMP Manager, the Site EP, and the project geotechnical engineer should be consulted to define appropriate criteria for evaluation of fill/import soil prior to transportation to the Site. GSI will follow the October 2001 DTSC Advisory on Clean Imported Fill Material for backfill material to ensure suitable clean fill will be used.
Grading Observation, Monitoring, and Soil Screening
During soil movement activities, the contractor performing the earthwork will visually observe disturbed or graded soils to assess for signs of contamination. The Site EP will conduct periodic evaluations such as visual observations for oily or discolored soils, olfactory (chemical or hydrocarbon odors), or screening for total VOCs using a photoionization detector (PID).
If soil exhibiting odors or staining is encountered, soil will be segregated/stockpiled for subsequent characterization and/or off-Site disposal, as applicable. If potential impacts are suspected during subsequent soil removal, the contractor will notify the SMP Manager and the Site EP, and discontinue work in that area, while the Site EP evaluates the soil and performs additional soil screening using a PID and/or conducts laboratory analysis for profiling purposes and soil disposition.
5 SCAQMD Rule 1166 applies to VOC -impacted soil. SCAQMD Rule 1466 applies to soil impacted with heavy toxic contaminants, such as metals.
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SCAQMD Rule 403 – Dust Monitoring
During soil movement activities, the contractor performing the earthwork will monitor for dust in accordance with SCAQMD Rule 4036.
SCAQMD Rule 1166 Permitting and Monitoring – VOC-impacted Soils If VOC-impacted soils are identified at the Site during soil disturbance activities, monitoring and compliance in accordance with Rule 1166 will become necessary during soil removal activities at the Site.
The requirements to control VOC emissions from excavating, grading, soil handling, and treating of VOC -impacted soil are outlined in SCAQMD Rule 1166. 7 The selected contractor will be responsible for Rule 1166 permitting and monitoring.
1. If greater than 2,000 cubic yards (cy) of VOC-impacted soil will be excavated from the Site, a Rule 1166 Site-specific plan will be necessary.
2. If less than 2,000 cy of VOC-impacted soil will be excavated from the Site, a Rule 1166 Various Locations Plan may be utilized.
During soil excavation monitoring, if it is determined that soil segregation is necessary, segregated soil will be placed on and covered with plastic sheeting in a designated stockpile area and secured. Soil stockpiles will be identified and classified as “Potential Non-Hazardous Soil Pending Waste Characterization Analysis” and “Potential Hazardous Soil Pending Waste Characterization Analysis” prior to final waste characterization/disposition.
SCAQMD Rule 1466 Permitting and Monitoring – Heavy Contaminants If heavy contaminants (e.g., lead or other metals) which exceed regulatory screening levels for residential land use remain at the Site, monitoring and compliance in accordance with Rule 1466 will become necessary during grading/redevelopment activities at the Site.The requirements to minimize off-Site fugitive dust emissions which may contain toxic air contaminants are outlined in SCAQMD Rule 1466.8 The General Contractor will be responsible for Rule 1466 compliance.
The Rule 1466 requirements include reducing particulate emissions in the ambient air caused by earth-moving activities of impacted soil (i.e. excavating, grading, soil handling, treating, stockpiling, and transferring/disposal). Included in the monitoring program is real time monitoring of dust as PM10 with at least one upwind and one downwind monitor during earth moving activities. If the PM10 concentration averaged over two hours exceeds 25 micrograms per cubic meter, then mitigation measures such as use of dust suppressants will be implemented prior to resumption of excavation activities.
Stockpiled Soil Characterization
It is not expected that graded/excavated soil will be characterized as hazardous (Regulatory Levels, Characteristic of Toxicity 9). However, if contaminated soils are encountered, the grading/excavation contractor will be responsible for selecting an appropriate off -Site disposal facility and identifying the data needs for profiling the soil to be transported to the selected facility before off-Site transportation.
6 https://www.aqmd.gov/home/rules-compliance/compliance/rule-403-dust-control-information 7 http://www.aqmd.gov/home/rules-compliance/compliance/rule-1166-site-specific-and-various-locations-soil- mitigation-plan
8 https://www.aqmd.gov/home/rules-compliance/compliance/rule-1466 9 22 CCR § 66261.24 Characteristic of Toxicity (a)(1)(B) Table I: Regulatory Levels. 31 GSI Job No. 6609
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As appropriate, based on soil disposition planning and receiving facility waste classification and sampling requirements, characterization sampling of the excavated soil will be conducted in general accordance with procedures outlined in the USEPA Test Methods for Evaluating Solid Waste (SW-846), Chapter Nine (1986), and ASTM International Standard Guide for Sam pling Waste Piles (D6009-96, Reapproved in 2006). It is assumed that stockpiles of soil will be non - stratified and exhibit a non-homogenous distribution of contaminants. The following sampling will be done at a minimum.
• Sampling will include one discrete sample for every 250 cy or less of stockpiled soil. • Each sample will be submitted for chemical analysis for soil characterization purposes, as required. Soil samples will be collected using EPA Method 5035 protocols including Encore sampler for collecting soil samples which will be analyzed in accordance with USEPA Method 8260B for VOCs, USEPA Method 8015 for TPH, and USEPA Method 6010/7471 for metals, and potentially other USEPA methods for additional constituents, if required by the off-Site soil disposal facility. • Characterization samples will be clearly labeled and placed in a chilled ice chest for transport to a state-certified analytical laboratory under chain-of-custody procedures.
Based on the results of sample analysis, soil will be classified as either non-hazardous waste or state or federal Resource Conservation and Recovery Act (RCRA) waste. The waste contractor will work with the SMP Manager and Site EP to coordinate and assess necessary and required additional waste characterization requirements with the selected disposal facility a nd for performing additional landfill-required waste characterization to allow for off-Site disposal.
Disposal Facility
After stockpiling and analyzing the excavated soil (profiling for disposal) , the stockpiles will be transported and disposed at the following landfills, depending on the chemical results of soil analysis:
1) Hazardous soil will be transported to the “La Paz County Landfill”, 26999 AZ -95, Parker, AZ 85344.
2) Non-Hazardous soil will be transported to “Soil Safe of California” located at 12328 Hibiscus Rd, Adelanto, CA 92301
The detailed routes to both landfills are shown in Appendix D.
Documentation
A daily stockpile soil management field log will be maintained , and the following information will be recorded for stockpiles and containers:
• excavation date;
• excavation location;
• stockpile or container designation;
• estimated size of stockpile and volume of soil in stockpile or container; • stockpile or container location;
• samples collected from stockpile or container and analysis performed; • description of mitigation measures employed for management of dust and odors , as applicable;
• stockpile or container disposition; and
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• notes regarding contractor and regulatory personnel activities related to excavated soils, as applicable.
Equipment Decontamination
Equipment contacting potentially impacted soil should be decontaminated using water (e.g., pressure washing). If vehicles are exposed to potentially impacted soil, decontamination procedures will include removing loose soil from the vehicle exterior with brooms or brushes. Soil not removed by brushing should be removed by washing with soap and water or steam-cleaning.
Water from the cleaning processes shall be collected , containerized, and sampled prior to disposal. Small equipment can be cleaned directly in a container that will be used for storing the water before disposal (e.g., bucket or drum). For larger equipment or vehicles that must be washed, a temporary decontam ination area should be set up for collecting and containerizing wash water. Access to the decontamination area should be restricted. Other methods for handling decontamination water (e.g., disposal to se wer or storm drain, on -Site use for dust control in affected soil areas) may be used if approved by the appropriate agency.
Unanticipated Conditions
It is possible that unknown subsurface features and structures (such as underground vaults, dry wells, septic systems, underground storage tanks [USTs], or piping) may be present on the Site.
If unanticipated underground structures or conditions are identified, the following steps should be followed:
• stop work in the area,
• secure the affected area, and
• notify the SMP Manager and Site EP.
Management of Open Excavations during Grading/Redevelopment Activities For excavations that must be left open after the end of a workday, dust control measures will be implemented to prevent dust generation while the excavation is unattended. The excavated areas will be covered with plastic sheeting and temporary barriers such as sandbags and caution tape will be installed around the perimeter of each excavation to prevent stormwater runoff. In addition, public access to the excavation will be controlled by implementation of access controls.
Dust Control
Dust may be generated by Site construction activities. The SCAQMD generally prohibits visible dust emissions beyond property lines as defined in Rule 403. When earthwork activities occur, dust control measures shall be implemented to minimize dust generati on. Implementation of appropriate dust control is the responsibility of the contractor; however, recommended general dust control measures include:
• apply water on the graded/excavated area to maintain soil moisture at least twice daily; • cover all trucks hauling soil, sand or other loose materials or require all trucks to maintain at least 2 feet of freeboard;10
• apply water three times daily, or apply soil stabilizers (non-toxic) on all unpaved roadways, parking areas, or staging areas;
• sweep daily all paved access roads, parking areas and staging areas;11
10 Trucks hauling soil off Site must secure the load in accordance with California and United States Department of Transportation regulations.
11 Affected soil will not be carried outside of the work area. 33 GSI Job No. 6609
Issued: December 2, 2024
465 Crenshaw Boulevard
Torrance, CA
-14- Soil Management Plan
Former PPG Industries
• sweep streets daily if visible soil material is carried onto adjacent public streets; • restrict non-essential traffic;
• minimize drop heights while loading transportation vehicles; and • cover exposed affected soil or stockpiles
6.0 DATA MANAGEMENT AND REPORTING
Critical to implementation of the SMP is an understanding of the purpose of the work and regulatory requirements, the conditions present at the Site, the potential for unknown conditions, maintaining quality assurance and quality control protocols, and documentation of the work.
Communication and coordination between the DTSC, the City of Torrance, GSI, and between parties conducting the work is essential.
Quality Assurance/Quality Control
QA/QC measures will be employed throughout the sampling and analytical testing associated with the activities described in this SMP such that representative and reliable data are generated to facilitate making decisions.
Field Records
Field records will be maintained by the parties conducting the work and GSI. Records will include logs of activities, and hauling records, if any. These records will include descriptions of the activities conducted, visual and olfactory observations and field measurements, location and type of samples collected, if any, and field equipment calibration logs. Where field observations indicate soil staining or an unanticipated condition, it will be documented based on its location.
7.0 REPORTING
Throughout the implementation of the SMP, the DTSC will be notified of the schedule and findings.
Technical memorandums will be generated and submitted to the DTSC. Anticipated documents include:
• Technical memorandum for results of soil sampling with comparison to soil screening levels for identification of excavation areas , for the first round of soil vapor results and comparison to screening levels, an update of the Conceptual Site Model (CSM) , and a screening level Human Health Risk Assessment (SL -HHRA), which will guide areas for excavation; this memorandum will be submitted to DTSC for concurrence prior to proceeding with excavation activities;
• Technical memorandum with excavation details (including figures showing extent of excavation), confirmation soil sampling results , post-excavation soil vapor sampling results, and a post-remediation HHRA; and
• SMP completion report and closure request.
8.0 CONTACT INFORMATION
For questions regarding this SMP, please contact Farid Achour, PhD, PG of GSI at 949-679-1070, or refer to the contact information for the SMP Manager in Appendix A.
34 GSI Job No. 6609
Issued: December 2, 2024
465 Crenshaw Boulevard
Torrance, CA
-15- Soil Management Plan
Former PPG Industries
9.0 REFERENCES
Department of Toxic Substances Control (DTSC), 2022a. Human Health Risk Assessment (HHRA) Note 3, HHRA Note 3, DTSC -modified Screening Levels (DTSC -SLs). California Environmental Protection Agency. May.
Department of Toxic Substances Control (DTSC), 2022b. Human Health Risk Assessment (HHRA) Note 3, HHRA Note 11, Southern California Ambient Arsenic Screening Level.
California Environmental Protection Agency. May.
United States Environmental Protection Agency (USEPA), 2024. U.S. EPA Regional Screening Levels. https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables (RSLs). May. 35 GSI Job No. 6609
SOIL MANAGEMENT PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Tables
Table 1: Soil Vapor – Residential Screening Levels for VOCs Table 2: Soil – Residential Screening Levels for Volatile Organic Compounds (VOCs) Table 3: Soil – Residential Screening Levels for Metals Table 4: Soil – Residential Screening Levels for Total Petroleum Hydrocarbons (TPH) Table 5: Soil – Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Table 6: Soil – Residential Screening Levels for Polycyclic Aromatic Hydrocarbons (PAHs) Table 7: Soil – Residential Screening Levels for Polychlorinated Biphenyls (PCBs) Table 8: Soil – Residential Screening Levels for Dioxins and Furans
36 GSI Job No. 6609
Table 1: Soil Vapor - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Vapor Screening Levels (SLs)1 Units
Tetra-
chloro-
ethene
(PCE)
Tri-
chloro-
ethene
(TCE)
cis-
1,2-DCE trans-
1,2-DCE Vinyl
Chloride Acetone
t-Amyl
Methyl
Ether
(TAME)
Benzene Bromobe
nzene
Bromo-
chloro-
methane
Bromo-
dichloro-
methane
Bromo-
form Bromo-
methane t-Butanol
(TBA)
2-
Butanone
(MEK)
n-Butyl-
benzene
sec-Butyl-
benzene
tert-Butyl-
benzene
Carbon
Di-
sulfide
Carbon
Tetra-
chloride
Chloro-
benzene
DTSC-SL for Residential Soil Vapor
µg/m3 15.3 16.0 277 1,400 0.30 NA NA 3.2 2,100 1,400 2.5 87 173 173,330 173,330 7,000 14,000 14,000 24,330 15.7 1,730 DTSC-SL for Commercial Soil Vapor
µg/m3 67 100 1,170 6,000 5.3 NA NA 14.0 8,670 6,000 11.0 367 733 733,330 733,330 29,330 60,000 60,000 103,330 67 7,330 37 GSI Job No. 6609
Soil Vapor Screening Levels (SLs)1 Units Chloro-
ethane Chloro-
form Chloro-
methane
2-Chloro-
toluene
4-Chloro-
toluene
Dibromo-
chlorome
thane
1,2-
Dibromo-
ethane
(EDB)
1,2-
Dibromo-
3-Chloro
propane
Dibromo-
methane
1,2-
Dichloro-
benzene
1,3-
Dichloro-
benzene
1,4-
Dichloro-
benzene
Dichloro-
difluoro-
methane
1,1-
Dichloro-
ethane
1,2-
Dichloro-
ethane
1,1-
Dichloro-
ethene
1,2-
Dichloro-
propane
1,3-
Dichloro-
propane
2,2-
Dichloro-
propane
1,1-
Dichlorop
ropene
cis-1,3-
Dichlorop
ropene
trans-1,3-
Dichlorop
ropene
DTSC-SL for Residential Soil Vapor
µg/m3 140,000 4.0 3,130 2,770 2,770 4.3 0.20 0.00 140 7,000 NA 8.7 3,330 60 3.7 137 25 2,770 NA NA NA NA DTSC-SL for Commercial Soil Vapor
µg/m3 600,000 17.7 13,000 11,670 11,670 19.3 0.70 0.10 600 29,330 NA 37 14,670 257 15.7 567 110 11,670 NA NA NA NA 465 Crenshaw Boulevard, Torrance, California
Table 1: Soil Vapor - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
38 GSI Job No. 6609
Soil Vapor Screening Levels (SLs)1 Units
Diisopro-
pyl Ether
(DiPE)
Ethyl-
benzene
Ethyl-t-
Butyl
Ether
(EtBE)
Hexa-
chloro-
butadiene
2-Hexa-
none
Isopropyl
benzene
4-Iso-
propyl-
toluene
Methyl-
ene
Chloride
4-Methyl-2-
Pentanone
(MIBK)
Methyl-t-
butyl
Ether
(MtBE)
Naph-
thalene
n-Propyl-
benzene
Styrene
1,1,1,2-
Tetra-
chloro-
ethane
1,1,2,2-
Tetra-
chloro-
ethane
Toluene
1,2,3-Tri-
chloro-
benzene
1,2,4-Tri-
chloro-
benzene
1,1,1-Tri-
chloro-
ethane
1,1,2-Tri-
chloro-
ethane
1,2,3-Tri-
chloro-
propane
DTSC-SL for Residential Soil Vapor
µg/m3 24,330 37 1,170 4.3 1,030 14,000 1,400 33 103,330 367 2.8 33,330 31,330 12.7 1.6 10,330 110 12.7 33,330 6.0 0.00 DTSC-SL for Commercial Soil Vapor
µg/m3 103,330 163 5,000 18.7 4,330 60,000 6,000 400 433,330 1,570 12.0 146,670 130,000 57 7.0 43,330 467 57 146,670 26 0.10 Table 1: Soil Vapor - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
39 GSI Job No. 6609
Soil Vapor Screening Levels (SLs)1 Units
Tri-
chloro-
fluoro-
methane
Trichloro-
trifluoro-
ethane
1,2,4-Tri-
methyl-
benzene
1,3,5-Tri-
methyl-
benzene
m,p-
Xylenes o-Xylene p-isopropyl-
toluene
DTSC-SL for Residential Soil Vapor
µg/m3 43,330 173,330 2,100 2,100 NA 3,330 7,000
DTSC-SL for Commercial Soil Vapor
µg/m3 176,670 733,330 8,670 8,670 NA 14,670 29,330
Notes:
Abbreviations:
µg/m3 = micrograms per cubic meter
PCE = tetrachloroethene
TCE = trichloroethene
cis-1,2-DCE = cis-1,2-dichloroethene
trans-1,2-DCE = trans-1,2-Dichloroethene
DTSC = California Department of Toxic Substances Control USEPA = United States Environmental Protection Agency
VOC = volatile organic compound
References:
DTSC, 2022. Human Health Risk Assessment (HHRA) Note, HERO HHRA Note 3, May.
DTSC, California State Water Resources Control Board, 2023. Supplemental Guidance: Screening and Evaluating Vapor Intrusion, February.
USEPA, 2024. Regional Screening Levels (RSLs), https://www.epa.gov/risk/regional-screening-levels-rsls-users-guide. November.
Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
1. The commercial/industrial soil vapor screening levels are calculated by applying the attenuation factor recommended by DTSC (2024) for soil vapor (0.03) to Regional Screening Levels (RSLs) for commercial/industrial air published by USEPA (2023) and endorsed or modified by DTSC (2022; DTSC-SLs).
Table 1: Soil Vapor - Residential Screening Levels for Volatile Organic Compounds (VOCs) 40 GSI Job No. 6609
Table 2: Soil - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit PCE TCE
cis-1,2-
DCE
trans-1,2-
DCE
Vinyl
Chloride
1,1,1,2-
Tetra
chloro
ethane
1,1,1-Tri
chloroeth
ane
1,1,2,2-
Tetra
chloro
ethane
1,1,2-
Trichloro-
1,2,2-
trifluoro
ethane
1,1,2-
Trichloro
ethane
1,1-
Dichloro
ethane
1,1-
Dichloro
ethene
1,1-
Dichloro
propene
1,2,3-
Trichloro
benzene
1,2,3-
Trichloro
propane
1,2,4-
Trichloro
benzene
DTSC-SL for Residential Soil μg/kg 590 940 18,000 70,000 8.2 2,000 1,700,000 600 6,700,000 1,100 3,600 4,800 NA 40,000 1.5 7,800 DTSC-SL for Commercial Soil
μg/kg
2,700
6,000
84,000
300,000
150
8,800
7,200,000
2,700
28,000,000
5,000
16,000
20,000
NA
300,000
21.0 35,000
Abbreviations:
PCE = tetrachloroethene
TCE = trichloroethene
DCE = dichloroethene
41 GSI Job No. 6609
Table 2: Soil - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit
1,2,4-
Trimethyl
benzene
1,2-
Dibromo-
3-Chloro
propane
1,2-
Dibromo
ethane
1,2-
Dichloro
benzene
1,2-
Dichloroe
thane
1,2-
Dichlorop
ropane
1,3,5-
Trimethyl
benzene
1,3-
Dichloro
benzene
1,3-
Dichlorop
ropane
1,4-
Dichlorob
enzene
1,4-
Dioxane
2,2-
Dichloro
propane
2-Butanone
(MEK)
2-Chloro
toluene 2-Hexanone
4-Chloro
toluene
DTSC-SL for Residential Soil μg/kg 300,000 4.3 36.0 1,800,000 460 2,500 270,000 NA 410,000 2,600 5,300 NA 27,000,000 470,000 200,000 440,000 DTSC-SL for Commercial Soil
μg/kg
1,800,000
57.0 160
9,300,000
2,000
11,000
1,500,000
NA
2,200,000
11,000
24,000
NA
190,000,000
2,500,000
1,300,000
2,300,000
42 GSI Job No. 6609
Table 2: Soil - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit
4-Methyl-2-
pentanone
(MIBK) Acetone Benzene
Bromo
benzene
Bromo
chlorom
ethane
Bromo
dichloro
methane
Bromo
form
Bromom
ethane
Carbon
disulfide
Carbon
tetra
chloride
Chloro
benzene
Chloro
ethane
Chloro
form
Chloro
methane
cis-1,2-
Dichloro
ethene
cis-1,3-
Dichloro
propene
DTSC-SL for Residential Soil μg/kg 33,000,000 70,000,000 330 290,000 150,000 290 19,000 6,800 770,000 650 280,000 5,400,000 320 110,000 18,000 NA DTSC-SL for Commercial Soil
μg/kg
140,000,000
1,100,000,000
1,400
1,800,000
630,000
1,300
86,000
30,000
3,500,000
2,900
1,300,000
23,000,000
1,400
460,000
84,000
NA
43 GSI Job No. 6609
Table 2: Soil - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit
Dibromo
chloro
methane
Dibromo
methane
Dichlorod
ifluorome
thane
Di-
isopropyl
ether
(DIPE) Ethanol
Ethyl
benzene
Ethyl-t-
butyl
ether
(ETBE)
Isopropyl
benzene
m,p-
Xylene
Methylene
Chloride
Methyl-t-
Butyl
Ether
(MTBE)
Naphtha
lene
n-Butyl
benzene
N-Propyl
benzene o-Xylene
p-
Isopropyl
toluene
DTSC-SL for Residential Soil μg/kg 940 24,000 87,000 2,200,000 NA 5,800 130,000 1,900,000 NA 2,200 47,000 2,000 2,400,000 3,800,000 640,000 170,000 DTSC-SL for Commercial Soil
μg/kg
4,100
99,000
370,000
9,400,000
NA
25,000
560,000
9,900,000
NA
26,000
210,000
6,500
18,000,000
24,000,000
2,800,000
1,100,000
44 GSI Job No. 6609
Table 2: Soil - Residential Screening Levels for Volatile Organic Compounds (VOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit
sec-Butyl
benzene Styrene
Tert-amyl-
methyl ether
(TAME)
tert-Butyl
benzene
Tetra
chloro
ethene Toluene
trans-1,2-
Dichloro
ethene
trans-1,3-
Dichloro
propene
Trichloro
ethene
Trichloro
fluoro
methane
Vinyl
acetate
Vinyl
chloride
Xylenes,
Total
DTSC-SL for Residential Soil μg/kg 2,200,000 5,600,000 NA 2,200,000 590 1,100,000 70,000 NA 940 1,200,000 910,000 8.2 580,000 DTSC-SL for Commercial Soil
μg/kg
12,000,000
32,000,000
NA
12,000,000
2,700
5,300,000
300,000
NA
6,000
5,400,000
3,800,000
150
2,500,000
Abbreviations:
PCE = tetrachloroethene
TCE = trichloroethene
DCE = dichloroethene
DTSC = Department of Toxic Substances Control
MEK = methyl ethyl ketone
μg/kg = microgram per kilogram
SL = Screening Level
References:
USEPA Regional Screening Levels (RSLs) are from U.S. Environmental Protection Agency (USEPA). 2024. Regional Screening Levels (RSLs). November.
DTSC Screening Levels (DTSC-SLs) are from California Environmental Protection Agency (Cal/EPA). 2022. Department of Toxic Substances Control (DTSC). Human Health Risk Assessment (HHRA) Note, HERO HHRA Note 3, DTSC-modified Screening Levels (DTSC-SLs). May. 45 GSI Job No. 6099
Table 4: Soil - Residential Screening Levels for Total Petroleum Hydrocarbons (TPH) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Gasoline Range
Organics
(C4-C12)
Diesel Range Organics
(C13-C22)
Oil Range Organics
(C23-C40)
DTSC-SL for Residential Soil 96.0 96.0 18.0
DTSC-SL for Commercial Soil
440
440
220
Notes:
Abbreviations:
mg/kg = micrograms per kilogram
References:
DTSC Screening Levels (DTSC-SLs) are from California Environmental Protection Agency (Cal/EPA). 2022. Department of Toxic Substances Control (DTSC). Human Health Risk Assessment (HHRA) Note, HERO HHRA Note 3, DTSC-modified Screening Levels (DTSC-SLs). May.
Soil Screening Levels
mg/kg
The TPH carbon ranges used in the RSLs are not intended to screen against gasoline, diesel, and oil-range organics.
The DTSC-SL used in this table for gasoline, diesel, and oil-range organics is the RSL for the aromatic high-fraction of petroleum- related compounds, which is the most conservative (lowest) RSL for petroleum-related compounds.
USEPA Regional Screening Levels (RSLs) are from U.S. Environmental Protection Agency (USEPA). 2024. Regional Screening Levels (RSLs). May.
46 GSI Job No. 6099
Table 5: Soil - Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
N-
Nitrosodimet
hylamine
(NDMA) Pyridine Aniline
Bis(2-
chloro
ethyl)
ether Phenol
2-Chloro
phenol
1,3-
Dichlorob
enzene
1,4-
Dichlorob
enzene
1,2-Dichloro
benzene
Benzyl
alcohol
Bis(2-
chloro
isopropyl)
ether 2-Methylphenol
Hexa
chloro
ethane
N-Nitrosodi-
n-propylamine
DTSC-SL for Residential Soil μg/kg 2.0 58,000 95,000 100 19,000,000 340,000 NA 2,600 1,800,000 6,300,000 NA 3,200,000 1,800 78.0 DTSC-SL for Commercial Soil
μg/kg
34.0 530,000
260,000
470
160,000,000
3,900,000
NA
11,000
9,300,000
53,000,000
NA
26,000,000
8,000
210
47 GSI Job No. 6099
Table 5: Soil - Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
4-Methyl
phenol
Nitro
benzene
Iso
phorone
2-Nitro
phenol
2,4-
Dimethyl
phenol
Bis(2-
chloro
ethoxy)
methane Benzoic acid
1,2,4-
Trichlorobe
nzene
Naphth
alene
4-Chloro
aniline
Hexa
chloro
butadiene
4-Chloro-3-
methylphenol
(p-Chloro-m-
cresol)
2-Methyl
naphtha
lene
2,6-
Dichloro
phenol
DTSC-SL for Residential Soil μg/kg 1,300,000 5,100 570,000 NA 1,300,000 190,000 250,000,000 7,800 2,000 2,700 1,200 6,300,000 190,000 NA DTSC-SL for Commercial Soil
μg/kg
16,000,000
22,000
1,600,000
NA
11,000,000
1,600,000
2,100,000,000
35,000
6,500
7,400
5,300
53,000,000
1,300,000
NA
48 GSI Job No. 6099
Table 5: Soil - Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
Hexachloro
cyclo
pentadiene
2,4,6-
Trichloro
phenol
2,4,5-
Trichloro
phenol
2-Chloro
naphthalene 2-Nitroaniline
Ace
naphthylene
Dimethyl
phthalate
2,6-
Dinitro
toluene
Ace
naphthene
3-
Nitroaniline
2,4-Dichloro
phenol
Dibenzo
furan
2,4-Dinitro
phenol
DTSC-SL for Residential Soil μg/kg 1,800 7,800 6,300,000 4,100,000 630,000 NA NA 360 3,300,000 NA 190,000 66,000 130,000 DTSC-SL for Commercial Soil
μg/kg
7,500
21,000
53,000,000
27,000,000
5,200,000
NA
NA
990
23,000,000
NA
1,600,000
650,000
1,100,000
49 GSI Job No. 6099
Table 5: Soil - Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
2,4-
Dinitro
toluene
4-Nitro
phenol Fluorene
4-Chlorophenyl
phenyl ether
Diethyl
phthalate
4-
Nitroanili
ne
4,6-Dinitro-2-
methylphenol
(4,6-Dinitro-o-
cresol)
N-Nitrosodi
phenylamine
1,2-Diphenyl
hydrazine
as Azobenzene
4-Bromo-
phenyl
phenyl
ether
Hexachloro
benzene
Penta
chloro
phenol
Phen
nthrene
DTSC-SL for Residential Soil μg/kg 1,700 NA 2,300,000 NA 51,000,000 27,000 5,100 110,000 680 NA 190 1,000 NA DTSC-SL for Commercial Soil
μg/kg
4,700
NA
17,000,000
NA
420,000,000
74,000
42,000
300,000
1,900
NA
860
2,000
NA
50 GSI Job No. 6099
Table 5: Soil - Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
Anthra
cene
Di-n-butyl
phthalate
Fluor
anthene Benzidine Pyrene
Butyl benzyl
phthalate
3,3´-
Dichlorobenzi
dine
Benzo(a)
anthracene
(1,2-Benzanthracene) Chrysene
Bis(2-
ethylhexyl)
phthalate
(DEHP)
Di-n-octyl
phthalate
DTSC-SL for Residential Soil μg/kg 17,000,000 6,300,000 2,400,000 0.24 1,800,000 290,000 450 1,100 110,000 39,000 630,000 DTSC-SL for Commercial Soil
μg/kg
130,000,000
53,000,000
18,000,000
3.0 13,000,000
780,000
1,200
12,000
1,300,000
110,000
5,300,000
51 GSI Job No. 6099
Table 5: Soil - Residential Screening Levels for Semi-Volatile Organic Compounds (SVOCs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
Benzo(b)fluoranthe
ne
(3,4-Benzofluor
anthene)
Benzo(k)
fluoranthene
(11,12-Benzofluor
anthene)
Benzo(a)pyrene (3,4-
Benzopyrene)
Indeno(1,2,3-
cd)pyrene
Dibenzo(a,h)
anthracene
(1,2,5,6-
Dibenzanthracene)
Benzo(ghi)
perylene
(1,12-
Benzoperylene)
DTSC-SL for Residential Soil μg/kg 1,100 11,000 110 1,100 28.0 NA DTSC-SL for Commercial Soil
μg/kg
13,000
130,000
1,300
13,000
310
NA
Abbreviations:
PCE = tetrachloroethene MEK = methyl ethyl ketone
TCE = trichloroethene
μg/kg = microgram per kilogram
DCE = dichloroethene
SL = Screening Level
DTSC = Department of Toxic Substances Control
References:
USEPA Regional Screening Levels (RSLs) are from U.S. Environmental Protection Agency (USEPA). 2024. Regional Screening Levels (RSLs). November.
DTSC Screening Levels (DTSC-SLs) are from California Environmental Protection Agency (Cal/EPA). 2022. Department of Toxic Substances Control (DTSC). Human Health Risk Assessment (HHRA) Note, HERO HHRA Note 3, DTSC-modified Screening Levels (DTSC-SLs). May. 52 GSI Job No. 6609
Table 6 - Soil - Residential Screening Levels for Polycyclic Aromatic Hydrocarbons (PAHs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit Naphthalene Acenaphthylene Acenaphthalene Fluorene Phenanthrene Anthracene Fluoranthene Pyrene Benzo[a]
anthracene Chrysene
Benzo[k]
fluoranthene
Benzo[b]
fluoranthene
Benzo[a]
pyrene
Indeno[1,2,3, c,d]
pyrene
Dibenzo[a,h]
anthracene
Benzo[g,h,i]
perylene
DTSC-SL for Residential Soil μg/kg 2,000 NA 3,300,000 2,300,000 NA 17,000,000 2,400,000 1,800,000 1,100 110,000 11,000 1,100 110 1,100 28.0 NA DTSC-SL for Commercial Soil
μg/kg
6,500
NA
23,000,000
17,000,000
NA
130,000,000
18,000,000
13,000,000
12,000
1,300,000
130,000
13,000
1,300
13,000
310
NA
Abbreviations:
μg/kg = microgram per kilogram
SL = Screening Level
DTSC = Department of Toxic Substances Control
References:
USEPA Regional Screening Levels (RSLs) are from U.S. Environmental Protection Agency (USEPA). 2024. Regional Screening Levels (RSLs). November.
DTSC Screening Levels (DTSC-SLs) are from California Environmental Protection Agency (Cal/EPA). 2022. Department of Toxic Substances Control (DTSC). Human Health Risk Assessment (HHRA) Note, HERO HHRA Note 3, DTSC-modified Screening Levels (DTSC-SLs). May. 53 GSI Job No. 6609
Table 7: Soil - Residential Screening Levels for Polychlorinated Biphenyls (PCBs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
Aroclor-
1016
Aroclor-
1221
Aroclor-
1232
Aroclor-
1242
Aroclor-
1248
Aroclor-
1254
Aroclor-
1260
Aroclor-
1262
Aroclor-
1268
~Aroclor
5460
Heptachloro
biphenyl,
2,3,3',4,4',5,5
'- (PCB 189)
Hexachlorob
iphenyl,
2,3',4,4',5,5'-
(PCB 167)
Hexachlorob
iphenyl,
2,3,3',4,4',5'-
(PCB 157)
Hexachlorob
iphenyl,
2,3,3',4,4',5-
(PCB 156)
DTSC-SL for Residential Soil μg/kg 4,000 200 170 230 230 240 240 NA NA 35,000 130 120 120 120 DTSC-SL for Commercial Soil
μg/kg
17,000
530
490
580
580
590
600
NA
NA
260,000
310
310
300
300
54 GSI Job No. 6609
Table 7: Soil - Residential Screening Levels for Polychlorinated Biphenyls (PCBs) Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels
Unit
Pentachloro
biphenyl,
2',3,4,4',5-
(PCB 123)
Pentachloro
biphenyl,
2,3',4,4',5-
(PCB 118)
Pentachloro
biphenyl,
2,3,3',4,4'-
(PCB 105)
Pentachloro
biphenyl,
2,3,4,4',5-
(PCB 114)
Pentachloro
biphenyl,
3,3',4,4',5-
(PCB 126)
Tetrachlorob
iphenyl,
3,3',4,4'-
(PCB 77)
Tetrachlorob
iphenyl,
3,4,4',5-
(PCB 81)
DTSC-SL for Residential Soil μg/kg 120 120 120 120 0.04 38.0 12.0 DTSC-SL for Commercial Soil
μg/kg
300
300
300
300
0.09 94.0
30.0 Abbreviations:
μg/kg = microgram per kilogram
SL = Screening Level
DTSC = Department of Toxic Substances Control
References:
USEPA Regional Screening Levels (RSLs) are from U.S. Environmental Protection Agency (USEPA). 2024. Regional Screening Levels (RSLs).
November.
55 GSI Job No. 6609
Table 8 - Soil - Residential Screening Levels for Dioxins and Furans Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit Naphthalene Acenaphthylene Dibenzofuran Furan Tetrahydrofuran 2,3,7,8-
Tetrachloro
dibenzo-p-
dioxin
(TCDD)
1,2,3,7,8-
Pentachlor
odibenzo-p-
dioxin
(PeCDD)
40321-76-4
1,2,3,4,7,8-
Hexachloro
dibenzo-p-
dioxin
(HxCDD)
39227-28-6
DTSC-SL for Residential Soil μg/kg 2,000 NA 66,000 9,500 18,000,000 0.00 NA NA DTSC-SL for Commercial Soil
μg/kg
6,500
NA
650,000
44,000
92,000,000
0.02 NA
NA
56 GSI Job No. 6609
Table 8 - Soil - Residential Screening Levels for Dioxins and Furans Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit
1,2,3,6,7,8-
Hexachloro
dibenzo-p-
dioxin
(HxCDD)
57653-85-7
1,2,3,7,8,9-
Hexachloro
dibenzo-p-
dioxin
(HxCDD)
19408-74-3
1,2,3,4,6,7,8-
Heptachlorodi
benzo-p-
dioxin
(HpCDD)
35822-46-9
1,2,3,4,5,6,7,8-
Octachlorodib
enzo-p-dioxin
(OCDD) 3268-
87-9
2,3,7,8-
Tetrachloro
dibenzofura
n (TCDF)
51207-31-9
1,2,3,7,8-
Pentachlor
odibenzofu
ran
(PeCDF)
57117-41-6
2,3,4,7,8-
Pentachlor
odibenzofu
ran
(PeCDF)
57117-31-4
1,2,3,4,7,8-
Hexachloro
dibenzofura
n (HxCDF)
70648-26-9
1,2,3,6,7,8-
Hexachloro
dibenzofura
n (HxCDF)
57117-44-9
1,2,3,7,8,9-
Hexachloro
dibenzofura
n (HxCDF)
72918-21-9
2,3,4,6,7,8-
Hexachloro
dibenzofura
n (HxCDF)
60851-34-5
DTSC-SL for Residential Soil μg/kg NA NA NA NA NA NA NA NA NA NA NA DTSC-SL for Commercial Soil
μg/kg
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
57 GSI Job No. 6609
Table 8 - Soil - Residential Screening Levels for Dioxins and Furans Former PPG Industries
465 Crenshaw Boulevard, Torrance, California
Soil Screening Levels Unit
1,2,3,4,6,7,8-
Heptachloro
dibenzofura
n (HpCDF)
67562-39-4
1,2,3,4,7,8,9-
Heptachloro
dibenzofura
n (HpCDF)
55673-89-7
1,2,3,4,5,6,7
,8-
Octachloro
dibenzofura
n (OCDF)
39001-02-0
Total
Tetrachloro
dibenzo-p-
dioxin
(TCDD)
41903-57-5
Total
Pentachlor
odibenzo-p-
dioxin
(PeCDD)
36088-22-9
Total
Hexachloro
dibenzo-p-
dioxin
(HxCDD)
34465-46-8
Total
Heptachlor
odibenzo-p-
dioxin
(HpCDD)
37871-00-4
Total
Tetrachloro
dibenzofura
n (TCDF)
55722-27-5
Total
Pentachlor
odibenzofu
ran
(PeCDF)
30402-15-4
Total
Hexachloro
dibenzofura
n (HxCDF)
55684-94-1
Total
Heptachlor
odibenzofu
ran
(HpCDF)
38998-75-3
DTSC-SL for Residential Soil μg/kg NA NA NA NA NA 0.10 NA NA NA NA NA DTSC-SL for Commercial Soil
μg/kg
NA
NA
NA
NA
NA
0.39 NA
NA
NA
NA
NA
Abbreviations:
μg/kg = microgram per kilogram
SL = Screening Level
NA = not applicable/not available
DTSC = Department of Toxic Substances Control
References:
USEPA Regional Screening Levels (RSLs) are from U.S. Environmental Protection Agency (USEPA). 2024. Regional Screening Levels (RSLs). November. 58 GSI Job No. 6609
SOIL MANAGEMENT PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Figures
Figure 1. Site Location Map
Figure 2. Location of 2009 Soil Remedial Action Excavations Figure 3. Proposed Sampling Locations
59 Appv'd By:
Chk'd By:
Drawn By:
Map ID:
Issued:
GSI job No.
Former PPG Industries, Inc.
465 Crenshaw Boulevard, Torrance, California
SITE LOCATION MAP
6609LocMap
9-Aug-2024
6609
FIGURE 1
DRAFT
RMZ
DM
1 91
405
405
105105
Del Aire
Manhattan
Beach
Lawndale
El Segundo
Hawthorne
Gardena
213
107
405
405
Palos Verdes
Shoreline
Preserve
City of Torrance
Open Space
Rolling Hills
Estates
Lomita
Hermosa
Beach
Palos Verdes
Estates
Redondo
Beach
Torrance
91 105105
West Rancho
Dominguez
1 405
405
110
West Carson
Carson
California
Reference map provided by Esri ArcGIS Online, 2023.
r
0 1.50.75
Miles
Site Location
60 r
Appv'd By:
Chk'd By:
Drawn By:
Map ID:
Issued:
GSI job No.
LEGEND
0 120
60 Feet
Projected Coordinate System
Datum: NAD 83
State Plane California Zone V
Units: Feet
Note
Aerial imagery downloaded from Nearmap dated May 5, 2024.
LOCATION OF 2009 SOIL
REMEDIAL ACTION EXCAV
A
TIONS
PPG Industries, Inc.
465 Crenshaw Boulevard, T
orrance, California
FIGURE
2 6609
28-May-2024
PPGT_2009RAE_2
AV
FA
2009 Excavation Area
BT
61 Metro
Metro
AlaskaAve
Metro
W 208th St
Crenshaw
Blvd
Crenshaw
Blvd
M
etro Metro
Dominguez St
Crenshaw
Blvd
Crenshaw
Blvd
W 208th St
Dominguez St
W 208th St
36 37
31 33 34
08 19
27 30
43 03
14 23 25
39 41 01 12 13 21
05 09
07 32
16 17
38 29
40 42
04 10
02 06
11 15
22 18
20 28
24 26
35 Appv'd By:
Chk'd By:
Drawn By:
Map ID:
Issued:
GSI job No.
LEGEND
r
0 12060
Feet
1) Aerial imagery downloaded from Nearmap dated May 5, 2024. 2) Sampling in Tarplant Preserve area is subject to approval by the California Department of Fish and Wildlife.
Note
FIGURE 3
Projected Coordinate System
Datum: NAD 83
State Plane California Zone V
Units: Feet
PPGT_2009RAE_1224
2-Dec-2024
6609
FA
BT
DM
Former PPG Industries, Inc.
465 Crenshaw Boulevard, Torrance, California
PROPOSED SAMPLING LOCATIONS
Soil and Soil Vapor Sampling Location
(Historical Excavation Areas)
Soil and Soil Vapor Sampling Location
(Site-Wide Grid)
Soil and Soil Vapor Sampling Location
(Tarplant Preserve)
Parcel Boundary
62 GSI Job No. 6609
SOIL MANAGEMENT PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Appendices
Appendix A. SMP Responsible Parties Contact Information
63 GSI Job No. 6609
465 Crenshaw Boulevard Soil Management Plan
Torrance, California Appendix A
SMP Responsible Parties Contact Information
The following parties are responsible for the implantation of the SMP. Contact information must be updated as necessary and stored in the SMP Manager’s files.
SMP Manager – The SMP Manager will be selected prior to the selection of the general contractor and will serve for the life of the project as the person responsible for SMP compliance. The SMP Manager will oversee all aspects of SMP compliance and will be included in the formulation of bid packages, bid walks, and communications with contractors.
Owner/Developer – Both the owner and the developer must be familiar with the guidelines identified in the SMP.
Waste Manifest Signatory – The person responsible for signing both hazardous and non - hazardous waste manifests must be identified prior to the implementation of the SMP. This person is usually a representative of the property owner.
Environmental Professional (EP) – The Site EP, a licensed engineer or geologist in the State of California, is a consultant to the SMP Manager and Owner/Developer and is responsible for sampling and analysis of potentially-impacted material.
General Contractor – Acknowledgement of the SMP should be included in the General Contractor’s bid package and SMP compliance costs should be identified.
Grading Contractor – Acknowledgement of the SMP should be included in the General Contractor’s bid package and SMP compliance costs should be identified.
Additional parties who will be responsible for the implementation of the SMP should acknowledge the SMP and include SMP compliance in their bid packages. These additional parties may include engineers, technicians, geotechnical professionals, environmental professionals, and waste disposal professionals.
Contact Information
Name Title Company/ Affiliation Contact
Phone No.
Carlos Huizar SMP Manager City of Torrance 310-618-5965 Danny Santana Owner/Developer City of Torrance 310-618-5880 Aram Chaparyan Waste Manifest Signatory City of Torrance 310-618-5880 Farid Achour, PHD, PG
Bita Tabatabai, PE
Environmental Professional (EP)
Environmental Professional (EP)
GSI Environmental Inc.
714-338-9618
949-679-1070
949-395-8182
Shahir Haddad, PE
Johnson Abraham
Joe Hwong, PG, CHG
Unit Chief
Project Manager
Senior Engineering Geologist
DTSC
714-484-5368
714-484-5380
714-484-5449
64 GSI Job No. 6609
SOIL MANAGEMENT PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Appendices
Appendix B. Soil Management Plan Acknowledgment Form
65 GSI Job No. 6609
465 Crenshaw Boulevard Soil Management Plan
Torrance, California Appendix B
Soil Management Plan Acknowledgment Form
The undersigned acknowledges:
• Receipt of the August 30, 2024 Soil Management Plan (SMP) for the property located at 465 Crenshaw Boulevard, Torrance, California; • He/She has reviewed and fully understands Site conditions and the requirements of the SMP;
• He/She will comply with all the requirements set forth in the SMP; and • He/She will assure that those under his/her supervision are knowledgeable and will adhere to the requirements of the SMP.
______________________________________________
Name (Printed)
______________________________________________
Name (Signature)
______________________________________________ ____________________ Affiliation Date
66 GSI Job No. 6609
SOIL MANAGEMENT PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Appendices
Appendix C. Site-Specific Health and Safety Plan (HASP
67 Samantha Curtis
THE COUNTY OF SAN DIEGO
SITE SPECIFIC HEALTH AND SAFETY PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Prepared for:
City of Torrance
3301 Torrance Boulevard
Torrance, California 90503
310-618-5880
Prepared by:
GSI Environmental Inc.
7595 Irvine Center Drive, Suite 250
Irvine, California 92618
949.679.1070
GSI Job No. 6609
Issued: November 2024
68 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California i
Project Health and Safety Plan
GSI Job No.: 6609 Revision No.: 0
Plan Prepared By: Corey Bair Date: 11/25/2024
Plan Reviewed By: F. Achour, B. Tabatabai Date:
Plan Approved: Farid Achour, Bita Tabatabai Date:
11/25/2024
11/25/2024
69 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California ii
Project Health and Safety Plan
ACKNOWLEDGEMENT
I, the undersigned, have been provided with a copy of this Site-Specific Project Health and Safety Plan. I have read the Plan, have attended a project safety orientation session conducted by GSI Environmental Inc. (GSI), and have had the opportunity to ask questions about health and safety issues relating to this project. I understand that it is my responsibility to abide by this Plan, and that physical injury, damage and other harm to myself or others could result from my failure to do so.
Name and Company
(Please Print) Signature Date
70 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California iii
Project Health and Safety Plan
T ABLE OF CONTENTS
1.0 SCOPE AND APPLICATION ................................................................ ................ 5
2.0 PROJECT DESCRIPTION
................................................................ .................... 5
2.1 Site Description
................................................................................................ ..... 5
2.2 Project Tasks
................................................................................................ ......... 6
3.0 EMERGENCY RESPONSE PROCEDURES
................................
........................ 7
3.1 STOP WORK AUTHORITY
................................................................ ................... 7
3.2 EMERGENCY ACTIONS
................................................................ ...................... 8
4.0 PROJECT ORGANIZATION, PERSONNEL, & TRAINING REQUIREMENTS ... 9
4.1 Key Personnel
................................................................................................ ....... 9
4.2 Training Requirements – Check all that apply and list any additional ................... 9
4.3 Requirements for Respirator Use
................................................................ .......... 9
4.4 Personnel Documents
................................................................ ........................... 9
5.0 POTENTIAL HAZARDS & HAZARD CONTROL MEASURES .......................... 10
5.1 General Site Access Control
................................................................ ............... 10
5.2 Project Personnel Access Control
................................................................ ....... 10
5.3 Underground Utilities Clearance
................................................................ .......... 10
5.4 General Work Hazards and Avoidance
................................
............................... 11
5.4.1 Housekeeping Measures:
................................................................ ........ 11
5.4.2 General Safe Work Practices:
................................................................ . 11
5.5 Fire and Explosion Hazard Mitigation
................................................................ .. 12
5.6 Heat-Related Illness
................................................................ ............................ 13
5.7 Heavy Equipment Operations
................................................................ .............. 14
5.8 Confined Space and Excavation Safety
................................
.............................. 14
5.9 Potential Chemical Exposure Hazards
................................................................ 14
5.10 Other Potential Hazards
................................................................ ...................... 16
6.0 AIR QUALITY MONITORING
................................................................ ............. 17
7.0 PERSONAL PROTECTIVE EQUIPMENT (PPE)
................................
................ 19
7.1 Level D PPE
................................................................................................ ........ 19
7.2 Supplemental Level D PPE
................................................................ ................. 19
7.3 Level C PPE
................................................................................................ ........ 20
7.4 Level B PPE
................................................................................................ ........ 20
8.0 DECONTAMINATION PROTOCOL
................................................................ .... 21
9.0 ADDITIONAL INFORMATION
................................................................ ............ 22
71 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
iv
Project Health and Safety Plan
Figures
Figure 1 Site Map
Figure 2 Urgent Care Map
Figure 3 Emergency Room Location Map
Attachments
Attachment 1. Safety Forms
Attachment 2. Applicable NIOSH Pocket Guide Pages
72 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
5 Project Health and Safety Plan
1.0 SCOPE AND APPLICATION
This Project Health and Safety Plan (HASP) has been prepared in accordance with 29 CFR §1910.120, and is a site-specific supplement to the GSI Environmental, Health & Safety Program Manual for Field Operations (EHS Program Manual), which specifies GSI’s general health and safety policies and procedures. This site -specific plan is to be provided to all site workers under the direction of GSI for their review. In addition, this plan, the GSI EHS Program Manual and applicable client safety guidelines will remain on -site at all times during the project and will be available to all project personnel upon request from the GSI Site Safety Officer (SSO) or other designated representative.
This SS-HASP specifies health and safety protocol to be followed during implementation of the project work scope by all Site personnel under the direction of GSI, including employees and subcontractors. In the event of conflicting standards between this plan or the GSI EHS Program Manual and client health and safety requirements, the more protective standard shall apply. All personnel are required to comply with this SS-HASP and to indicate their agreement to do so by signing the cover page.
2.0 PROJECT DESCRIPTION
Client/Site Owner City of Torrance
Project Name and
General Description 654 Crenshaw Boulevard
Project Location
(Physical Address) 654 Crenshaw Boulevard, Torrance, California Detailed Location
Information
The Site is a 13.3-acre property which was partially redeveloped to build the Mary K Giordano Torrance Regional Transit Center (also known as the Torrance Transit Center) which is operated by the Torrance Transit System (6.68 acres).
Start Date/Duration/
Other Schedule Info. SMP Implementation
2.1 Site Description
The Site is approximately 13.3 acres in size and located at 465 Crenshaw Boulevard, Torrance, California. Historically the Site was occupied by PPG. Former PPG areas are identified on Figure 2, as an overlay on the current layout of the Site. Currently, the Site is partially redeveloped (6.68 acres) as the Mary K. Giordano Regional Transit Center with a main building and paved surface parking areas and driveways. Surrounding properties are mixed commercial and residential.
The Site was previously owned and occupied by PPG which operated as a manufacturing facility producing aqueous and solvent based paints and synthetic resins for industrial and automotive clients from 1950 to 2000 (Figure 2). Manufacturing operations were s caled down in 1999 to 73 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
6 Project Health and Safety Plan
distribution only, in preparation for their closure and demolition of the facility. All prior structures and fixtures at the Site related to PPG were demolished and removed in 2000.
PPG formerly occupied the Site from approximately 1950 until 2000. Prior to vacating the Site, multiple subsurface investigations including soil removal and groundwater remediation, and monitoring activities were conducted. Site demolition began in 2000, and all fixtures and structures were removed that same year. A detailed history of demolition, soil removal, groundwater remediation, and monitoring activities is described in the Site-Wide Soil and Groundwater Investigation Report (SWI Report, Earth Tech, 2007).
2.2 Project Tasks
The project tasks will include the following to be completed under GSI oversight:
Prior to redevelopment activities, soil sampling will be conducted to characterize residual impacts at the Site. Based on soil sampling results, impacted soil above residential screening levels will be delineated, excavated to where technically feasible, and properly disposed off-Site.
In an effort to support the request to the DTSC for rescinding the industrial/commercial LUC (2021), soil impacts that exceed residential screening levels will be investigated, and if needed, excavated. Impacts to soil include metals, specifically hexavalent chromium.
Soil and Soil Vapor Sampling Rationale and Plan
Soil and soil vapor sampling is proposed at areas of historical excavation (pre -2010 LUC areas) and on a grid pattern across the Site. The depth of the soil samples at historical excavations will extend beyond the backfill placed post-excavation as well as the depth of infill. Proposed sample locations are shown on Figure 3. There are 3 sampling groups; locations in the Tarplant Preserve, locations at historical excavations, and locations placed on a grid pattern across the Site.
At each historical excavation areas, soil samples will be collected at the surface (0.5), 2, 5, 10, 15 and 25 feet bgs. Within the Tarplant Preserve and Site -Wide Grid soil samples will be collected at surface (0.5), 5, and 15 feet bgs. Soil to be analyzed for VOCs will be collected per USEPA Method 5035 using a disposable soil sampling tool to minimize volatilization. Disposable sampling tools include Terra Cores, En Core, Easy Draw Syringe, or equivalent products.
The soil samples collected at the surface (0.5), 5, and 15 feet bgs (the 2, 10, and 25 feet bgs samples will be placed on hold) will be analyzed for:
• VOCs by USEPA 8260B3
• Metals including chromium and lead by USEPA Methods 6010B/7471A (for mercury) The soil samples collected from depths of 2, 10, and 25 feet will be placed on hold pending the results of surface (0.5), 5, and 15 feet bgs soil samples.
Following soil sample collection at the boring locations, temporary soil vapor probes will be placed and soil vapor sampled at depths of 5 and 15 feet bgs. Soil vapor probe installation and sampling will be in accordance with DTSC’s Soil Vapor Guidance. Soil vapor will be analyzed for USEPA Method 8260B modified.
74 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
7 Project Health and Safety Plan
The sample results will be compared to the DTSC -SLs (DTSC, 2022a and 2002b) and USEPA RSLs (USEPA, 2024) to identify areas which exceed residential screening levels for step -out sampling or hotspot excavation.
Hotspot Excavation and Post-Excavation Confirmation Sampling The initial extent of each hotspot excavation will be identified based on the sampling program. At each excavation, confirmation soil samples will be collected to verify the impacted soil has been adequately removed. The soil analytical results will be compared to the screening criteria (DTSC- SLs and RSLs). Additional excavation will be conducted, as needed, based on step-out sampling and confirmation sampling analytical results. Soil sampling frequency and locations are detailed below.
Confirmation Soil Sampling Plan
• Excavation bottom: 20-foot grid (minimum 2 samples)
• Sidewall (minimum 2 samples)
o Depth:
If depth is 10 feet or less: mid-point of sidewall
If depth is greater than 10 feet: one sample at 5 feet depth and one at 14 feet or 1-foot above the bottom of the excavation
o Spacing: every 10 linear feet along the sidewalls
• Analytical Program: same as the Site-wide sampling program o VOCs by USEPA 8260B
o Metals including chromium and lead by USEPA Methods 6010B/7471A (for mercury)
Excavated soil will be stockpiled and profiled for appropriate off -Site disposal. Documentation of the disposition of the soil will be included in the excavation technical memorandum.
3.0 EMERGENCY RESPONSE PROCEDURES
Specify emergency reporting contact. Call 911 for emergencies.
Report all accidents immediately to:
Bita Tabatabai (GSI Environmental): (949) 395-8182
Corey Bair (GSI Environmental): (714) 803-7520
Carlos Huizar (Client Contact – City of Torrance) (310) 618-5965 NOTE: Specific emergency contact information and applicable directions to the nearest medical facility are contained in Figures 2 and 3. SECURE the safety of yourself and those working under your direction and then contact appropriate site and GSI representatives that are referenced above.
3.1 STOP WORK AUTHORITY
All GSI employees have the authority and obligation to stop any task or operation where concerns and/or questions regarding the control of risk exist, are not clearly established, or are 75 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
8 Project Health and Safety Plan
not understood. Management is responsible for creating a culture where Stop Work Authority is exercised freely and without fear of retribution or intimidation.
3.2 EMERGENCY ACTIONS
Location of emergency assembly area(s) and evacuation route.
In case of an emergency, assemble on north side of the Site along West 208th Street Describe other applicable emergency response measures to be taken (decontamination and/or medical treatment).
In case of emergency, call 911
Location and phone number of nearest urgent care facility Directions to the urgent care facility are shown on Figure 2. 1st Stop Urgent Care & Family Practice
2406 Torrance Boulevard
Torance, CA 90501
Phone
+1 (310) 328-3421
Refer to Figure 2 - Urgent Care Location Map
Location and phone number of nearest hospital with emergency room Directions to the emergency room facility are shown in Figure 3.
Providence Emergency Department - Torrance
4101 Torrance Boulevard
Ground Floor
Torrance, CA 90503
Phone
+1 (310) 303-5600
Refer to Figure 3 – Emergency Room Location Map
76 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
9 Project Health and Safety Plan
4.0 PROJECT ORGANIZATION, PERSONNEL, & TRAINING REQUIREMENTS
4.1 Key Personnel
Position Name Phone
GSI Principal Bita Tabatabai (949) 395-8182
GSI Principal Farid Achour (714) 338-9618
GSI Project Team Leader (PTL) Michelle Zulauf (949) 679-1070 (office) GSI Site Manager Corey Bair (714) 803-7520
GSI H&S Coordinator Tiam Novin (949) 412-6217
Client Project Manager Carlos Huizar (310) 618-5965
Client H&S Representative TBD TBD
Subcontractor Foreman TBD TBD
4.2 Training Requirements – Check all that apply and list any additional X OSHA 40-hr HAZWOPER X OSHA 8-hr Annual Refresher
Contractor Safety Council (CSC) –
Basic +
TWIC Card
Site-Specific (CSC or on-Site)
Unit-Specific
4.3 Requirements for Respirator Use
Will respirator use potentially be required? Yes X No If yes, GSI Respiratory Protection Plan, found in Section 6.0 of the GSI HASP, is applicable.
Affected personnel must have physician’s written opinion certifying fitness to use respirator based on pulmonary function test and other considerations, be trained in proper respirator use, and have quantitative fit test.
4.4 Personnel Documents
List documentation of training or medical fitness project personnel will be required to provide.
All field project personnel, including subcontractors, are to maintain training and medical records at their respective offices and provide to GSI if requested. OSHA 40-hour HAZWOPER training with 8-hour refresher courses is required of all field personnel. 77 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
10 Project Health and Safety Plan
5.0 POTENTIAL HAZARDS & HAZARD CONTROL MEASURES
5.1 General Site Access Control
Specify Site control measures as necessary to prevent unauthorized persons from entering work area (e.g., fencing, barricades, tape, signs, etc.).
To ensure the safety of all personnel and prevent unauthorized access to the work area during the implementation of the soil management plan, the following site control measures will be implemented:
1. Fencing: Temporary fencing may be erected around the perimeter of the work area if warranted. The fencing should be constructed of durable materials to prevent easy breach.
2. Warning Tape : High -visibility warning tape should be used to demarcate the boundaries of the work area. The tape will be placed at eye level and will be regularly inspected and maintained to ensure visibility.
3. Signage: Clear and visible signs will be posted around the perimeter of the work area.
Signs will include warnings such as "Authorized Personnel Only," "Danger: Excavation in Progress," and "No Trespassing." Signs will be in multiple languages if necessary to accommodate all site personnel and visitors.
4. Access Control Log : An access control log will be maintained to record the names, affiliations, and times of entry and exit for all personnel entering the site. This log will be reviewed regularly to ensure compliance with access protocols.
5. Visitor Protocol: All visitors must sign in at the site, receive a safety briefing, and be escorted by authorized personnel at all times while on site. Visitors must wear appropriate personal protective equipment (PPE) as required.
6. Emergency Access: Clear access routes for emergency vehicles will be maintained at all times. These routes will be marked and kept free of obstructions.
By implementing these site control measures, we aim to maintain a safe and secure work environment, preventing unauthorized access and ensuring the safety of all personnel involved in the soil management plan.
5.2 Project Personnel Access Control
Specify sign -in and sign out procedures for project personnel, and means of notifying Site manager if unable to be on-Site.
Sign in and out with the GSI Site Safety Officer.
5.3 Underground Utilities Clearance
Specify procedures for obtaining clearance of locations for drilling, excavation, or other subsurface penetrations. Utility clearance will include at least a 48 -hour notification to 78 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
11 Project Health and Safety Plan
Underground Service Alert (USA) of California, the state underground utility notification authority.
Specify date of call, response and case or serial no. For clearance of Site-owned utilities, provide contact and response information. Include a copy of any emails or other notifications of clearance at the end of this SS-HASP.
Include a copy of any emails or other notifications of clearance at the end of this SS-HASP.
Utility clearance will include at least a 48-hour notification to Underground Service Alert (USA) of California, the state underground utility notification authority. Below are the color designations to be used by the underground utilities surveyor.
WHITE – PROPOSED EXCAVATION
PINK – TEMPORARY SURVEY MARKINGS
RED – ELECTRIC POWER LINES, CABLES, CONDUIT AND LIGHTING CABLES YELLOW – GAS, OIL, STEAM, PETROLEUM OR GASEOUS MATERIALS ORANGE – COMMUNICATION, ALARM OR SIGNAL LINES, CABLES OR CONDUIT BLUE – POTABLE WATER
PURPLE – RECLAIMED WATER, IRRIGATION AND SLURRY LINES
GREEN – SEWERS AND DRAIN LINES
5.4 General Work Hazards and Avoidance
General work hazards include slip, trip, and fall hazards, head or foot injuries from falling or dropped objects, strains from over -exertion or incorrect lifting, electrical shocks, etc. These hazards can be controlled by good housekeeping measures and safe work practices, as outlined below. See also GSI EHS Program Manual.
5.4.1 Housekeeping Measures:
• The job Site must be kept clean and free of trash and debris. Trash will be placed in bags or other suitable containers when generated. Disposable PPE must be disposed in designated containers upon removal.
• Materials such as lumber, well screen and riser pipe, filter pack sand, cement, etc. will be neatly stored in a designated area.
• Tools and equipment must be returned to the tool box or designated area when no longer in use.
5.4.2 General Safe Work Practices:
• Use buddy system.
• Stay alert at all time to activities in your surroundings. Watch for on-coming vehicles, other workers, and overhead hazards.
• Work at a deliberate pace; do not rush a job.
• Avoid heavy lifting and lift with knees bent.
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GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
12 Project Health and Safety Plan
• Use tools only for their intended use, and make sure tools are in good condition. Inspect power tool and extension cords prior to use.
• Maintain safe distance (at least 10 feet and an additional 4 inches for every 10 kilovolts (kV) over 50 kV) between drill rig mast or other overhead equipment and overhead lines. • Avoid unauthorized entry to restricted areas including confined space areas. • Proper PPE (specified below) must be worn at all times. PPE must be inspected regularly and properly maintained.
• Remove gloves and wash hands before handling food or tobacco products.
5.5 Fire and Explosion Hazard Mitigation
• All drilling or excavation locations must be properly cleared for the presence of underground utilities prior to drilling or digging. (Utility clearance procedures are specified above).
• Gasoline and other fuels must be stored in steel safety cans with mesh flame arresters and spring -mounted relief vent mechanisms. Flammable and combustible materials including paints and solvents must be properly stored away from sources of ignition. • Fire extinguishers must be present on all vehicles and drilling and excavation equipment, and in all areas where spark producing equipment is in use.
Other Measures (check as applicable):
X Smoking permitted only in designated areas
Matches and lighters not permitted on-Site
Hot-work permits must be obtained for spark-producing equipment in designated areas.
Other
80 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
13 Project Health and Safety Plan
5.6 Heat-Related Illness
The major varieties of heat -related illnesses, their related symptoms and appropriate treatment are listed below in order of increasing severity.
Condition and
Related Symptoms Heat Stress Heat Exhaustion or
Heat Syncope Heat Stroke
Cramping May be present May be present Absent
Mental State Faint, dizzy, fatigue May be disoriented Stupor or coma Skin & Complexion Cool, moist, flush; rash may
be present Cool, pale, moist Red, hot, dry
Temperature Normal Normal to low Very high (>105° F)
Pulse Rapid (>110 beat /min) Rapid, weak Rapid, bounding Blood Pressure May be low May be low May be high in early stages Treatment
Give water & electrolytes,
loosen or remove clothing,
move to shade
Give water &
electrolytes, loosen or
remove clothing, move to
shade
Provide rapid cooling by
immersion; cover in wet
cloth and transport to
emergency room
Prevention Measures: Heat disorders are caused by loss of fluids and the body's inability to cool itself. Heat stress can be prevented by the following measures:
• Pre- hydrate before going into the field: water or water -electrolyte drinks are preferable to caffeinated beverages or soft drinks. Refrain from alcohol the night before field work. • Drink water or water-electrolyte drinks in the field frequently. Numerous small drinks at a tepid temperature are better than rapid, large volume intakes of iced drinks. • Rest at least a few minutes every hour or two and in the shade if possible. • Observe co-workers for signs of heat stress and communicate to the project team if you or another person needs rest or fluids.
OSHA identifies the following Risk Levels for given values of the heat index and recommends increasing Protective Measures to be implemented at each level.
Heat Index Risk Level Protective Measures
< 91° F Lower (Caution) Basic heat safety and planning
91° to 103° F Moderate Implement precautions and heighten awareness 103° to 115° F High Additional precautions to protect workers > 115° F Very High to
Extreme Aggressive measures (e.g., reschedule non-essential work) In addition to the above, GSI staff will review weather conditions prior to each work day and the SSO will remind staff to take breaks in the shade and stay hydrated. Proper hydration, before, during and after field work, is critical; OSHA recommends four cups of cool water per hour. 81 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
14 Project Health and Safety Plan
Periodic rest breaks of at least a few minutes every hour or two gives the body a chance to release heat. Rest is more effective in a shaded place out of the direct sun. GSI will provide a shade canopy if temperatures are expected to exceed 80 degrees Fahrenheit. In addition, cold water and Gatorade will be provided by GSI for field personnel.
5.7 Heavy Equipment Operations
Drilling and other equipment must be in good condition. Particular attention should be paid to the condition of cables and hoisting equipment. The equipment must be equipped with a back -up beeper. Barricades or caution tape should be used as needed to exclude unauthorized personnel from the work area.
During drilling, the drill rig should be positioned to allow for adequate work room and the area kept free of trip and slip hazards. Care must be taken to avoid the catching of loose clothing in moving parts, and to keep hands free of pinch points. Proper PPE including hard hat, safety glasses, gloves, hearing protection, and safety shoes must be worn.
All vehicles or mechanical equipment that may have all or parts of its structure near energized overhead lines should maintain an operating distance of at least 10 feet of clearance with distance increased by 4 inches for every 10 kV over 50kV.
5.8 Confined Space and Excavation Safety
All personnel must obey all posted restrictions on entry to confined spaces. Excavations deeper than 4 ft should not be entered for any purpose unless 1) the excavation walls are properly shored or are sloped at a 1:1 slope, or less steep, and there is no danger of collapse or engulfment; 2) a suitable means of egress such as ramp, stairs or ladder is located so as to require no more than 25 feet of lateral travel to reach it; and 3) testing demonstrates a hazardous atmosphere is not present.
5.9 Potential Chemical Exposure Hazards
Summarize primary constituents of concern, relevant exposure levels, and the maximum expected concentrations in soil and/or groundwater, to the extent known. Provide Safety Data Sheets (SDSs) in Attachment 2.)
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
15 Project Health and Safety Plan
Constituents of
Concern (COCs) Exposure Limits1 Max. Expected Concentration or Free-Phase (FP)5
Health Hazard
Target Organ
Route of Entry
Chemical Name/
CAS No.
PEL/
TLV
(ppm)
STEL/
REL
(ppm)
IDLH
(ppm)
Soil
(mg/kg)
Ground
water
(mg/L)
Soil Gas
(mg/m3)
Ca = Carcinogen
Abs = Skin Absorption
Con = Skin or Eye
Contact
Inh = Inhalation
Ing = Ingestion
Lead
[7439-92-1]
0.05 mg/m3 NPV 100
mg/m3 520 -- -- Inh, Ing, Con, Ca
Polychlorinated
Biphenyls (PCBs)
[11097-69-1]
0.5 mg/m3 NPV
5 mg/m3 0.71 -- -- Inh, Abs, Ing, Con, Ca
Trichloroethene (TCE)
[79-01-6]
25 135
1000
--
0.030
--
Inh, Abs, Ing, Con, Ca
Tetrachloroethene
(PCE)
[127-18-4]
100
100
150
--
0.0081
--
Inh, Abs, Ing, Con, Ca
1,2-dichloroethane
(1,2-DCA)
[107-06-2]
1 2
50 --
0.00092
--
Inh, Ing, Abs, Con, Ca
1,1-dichloroethane
(1,1-DCA)
[75-35-3]
100
100
3000
--
0.020
--
Inh, Ing, Con
Cis-1,2-
dichloroethene
(c-1,2-DCE)
[156-59-2]
NPV
NPV
NPV
--
0.022
--
Inh, Ing, Con
1 Unless otherwise noted, Permissible Exposure Limits (PEL) and Threshold Limit Values (TLVs) are permissible time-weighted average exposure limits (ppm in air), which must not be exceeded for an 8-hour work-day/40-hour work week. Short-Term Exposure Limits (STELs) must not be exceeded over a 15-minute period. 2 IDLH = Immediately Dangerous to Life or Health; must not be exceeded at any time. 3 NPV = No published value
4 Exposure limits and associated health hazards can be found in the NIOSH Pocket Guide to Chemical Hazards and the ACGIH Guide to TLVs and BEIs. 5 Concentrations summarized from Environmental Site Investigation Report, Amec Foster Wheeler, July 2018 6 TPHg = gasoline-range total petroleum hydrocarbons
7 TPHd = diesel-range total petroleum hydrocarbons
8 ND = Not detected above laboratory reporting limits
9 NA = Not applicable
83 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
16 Project Health and Safety Plan
To minimize potential chemical exposure, the following measures will be taken:
• SDS must be provided for any chemical brought on-Site for project use. • Workers should remain upwind of contaminated materials to the extent practical. • PPE specified below will be worn prevent skin or eye contact with constituents. • Air quality monitoring will be conducted and respiratory protective equipment used as needed, as described below.
• Eating, drinking, smoking, gum chewing and oral tobacco use are not permitted in areas where chemical exposure could occur.
• Workers must remove gloves in the work area and drink from a water source outside the immediate work zone.
• PPE must be removed and hands thoroughly washed prior to breaking for meals.
5.10 Other Potential Hazards
List other potential hazards associated with the Site and/or specific tasks and describe hazard mitigation methods.
Potential Hazards:
1. Exposure to Contaminants: The primary concern is exposure to contaminated soil and vapors, which may contain hazardous substances such as heavy metals, volatile organic compounds (VOCs), or other toxic chemicals.
Inhalation of these vapors or direct contact with contaminated soil can lead to acute or chronic health effects, including respiratory issues, skin irritation, and long-term systemic toxicity.
2. Physical Injuries: The physical activities involved in excavation and sampling pose risks such as accidental injuries from heavy machinery, slips, trips, and falls, and potential cave-ins or collapses of excavation sites. The use of heavy equipment also introduces noise hazards, which can lead to hearing damage if proper protective measures are not taken.
3. Underground Utilities: There is a significant hazard of encountering underground utilities or other hidden obstructions, which can cause serious injury or damage if struck during excavation.
Avoidance Measures:
1. Exposure to Contaminants:
• Personal Protective Equipment (PPE): Ensure all personnel wear appropriate PPE, including respirators, gloves, and protective clothing, to minimize exposure to contaminants.
• Air Monitoring: Conduct regular air monitoring to detect the presence of hazardous vapors and ensure levels remain below permissible exposure limits.
84 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
17 Project Health and Safety Plan
• Decontamination Procedures: Establish decontamination stations for personnel and equipment to prevent the spread of contaminants.
2. Physical Injuries:
• Training and Safety Briefings: Provide comprehensive training and regular safety briefings to all personnel on the proper use of equipment and safe work practices.
• Site Control Measures: Implement strict site control measures, including fencing, barricades, and clear signage, to prevent unauthorized access and ensure that only trained and equipped personnel enter the work area.
• Equipment Maintenance: Ensure all machinery and equipment are regularly inspected and maintained to prevent malfunctions and accidents.
3. Underground Utilities:
• Utility Location: Conduct thorough site assessments and use utility locating services to identify and mark the locations of underground utilities before beginning excavation.
• Excavation Protocols: Follow established excavation protocols, including hand-digging in areas near marked utilities and using non- destructive methods when possible.
By implementing these avoidance measures, we aim to mitigate the identified hazards and maintain a safe working environment for all personnel involved in the soil management plan.
6.0 AIR QUALITY MONITORING
Air Monitoring Instrument
X Photoionization Detector (PID)
Drager Tube (specify compound & use)
Personal Badges (specify compound & use)
Lower Explosive Level (LEL) Meter
Other (Specify)
Monitoring Frequency and Location
Identify tasks during which air monitoring is to be performed? 85 GSI Job No.: 6609
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SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
18 Project Health and Safety Plan
A PID will be used to intermittently monitor worker’s breathing zone.
In the event that sustained levels (1 minute) of 5 ppm in measured vapors are detected in the breathing zone, stop work and notify the SSO. Adjustments to the field practice such as ventilation and engineering controls will be implemented as needed prior to returning to the field activities.
Specify where will monitoring be performed (e.g., Worker’s breathing zone , Site perimeter, contaminant source area, or other area) and Monitoring Frequency (e.g., Continuous, Periodic {hourly, etc.}, on detection of noticeable odor).
Workers breathing zone and contaminant source area. Air monitoring will be performed using a Phocheck Tiger or MiniRAE 3000 Photo Ionization Detector (PID) (calibrated to 100 ppm Isobutylene standard)
86 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
19 Project Health and Safety Plan
7.0 PERSONAL PROTECTIVE EQUIPMENT (PPE)
7.1 Level D PPE
A minimum of Level D PPE is required for all Site personnel at all times, upgraded as necessary depending on task and conditions. Basic Level D PPE shall include the following elements: 1) Hard Hat (w/ mono goggles); 2) Safety Glasses (w/side shields); 3) Safety Shoes (w/steel toes); 4) Body Covering (long pants, shirt w/ sleeves, collar). Basic Level D equipment will be supplemented as follows:
7.2 Supplemental Level D PPE
Item When/Where to be Used
Flame Retardant Clothing
(FRC)
X Hearing Protection When using heavy equipment or if standing in the vicinity of the heavy equipment
X Work gloves
X Latex or vinyl surgical gloves
X Neoprene or Nitrile gloves While handling samples or sampling equipment.
Tyvek Coveralls
Polycoat Tyvek Coveralls
Chemical-resistant boots
Face Shield
X High-Visibility Vest/Shirt While working on Site
Face covering/Face mask
87 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
20 Project Health and Safety Plan
7.3 Level C PPE
Specify action level conditions for Level C PPE (use of Air-Purifying Respirator).
Level C PPE will not be required for this project
Specify equipment and limitations
Half-face Respirator up to ppm, TOV or ppm (compound) by Draeger Full Face Respirator up to ppm, TOV or ppm (compound) by Draeger Specify Cartridge Type
Specify action level conditions for Level B (Supplied Air) if applicable, or suspension of work.
Not applicable for this project
7.4 Level B PPE
Specify Level B Equipment (pressure demand, continuous flow, etc.) Level B PPE will not be required for this scope of work.
Specify Level B Procedures (personnel, air supply monitoring, etc.) Not applicable to this project.
Specify conditions for project shut-down.
Not applicable to this project.
88 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
21 Project Health and Safety Plan
8.0 DECONTAMINATION PROTOCOL
Specific procedures for personnel decontamination and management of disposable PPE.
Personal Decontamination: Wash hands thoroughly before leaving the Site or eating.
Disposable PPE (e.g. nitrile gloves) will be disposed in trash bags and disposed appropriately.
Equipment Decontamination: Equipment contacting potentially -impacted soil should be decontaminated using potable water (e.g., pressure washing with a steam cleaner). Re-usable sampling equipment will be decontaminated using laboratory grade detergent and p otable water, and rinsed twice with potable water, or a high -pressure steam cleaner will be used.
Investigation derived waste (i.e., tubing, paper towels, nitrile gloves, etc.) will be placed in trash bags, and disposed according to state and local regulations. Additionally, “Visqueen” or other plastic sheeting will be laid down in the work area to help prevent cross decontamination and keep the work area clean.
Specify procedures for response to non-emergency chemical release.
No Chemicals will be used during this project.
89 GSI Job No.: 6609
Issued: November 2024
SITE SPECIFIC HEALTH AND SAFETY PLAN
GSI Environmental Inc.
465 Crenshaw Boulevard
Torrance, California
465 Crenshaw Boulevard
Torrance, California
22 Project Health and Safety Plan
9.0 ADDITIONAL INFORMATION
GSI will conduct a review of the Site -specific Health and Safety Plan with subcontractors and other personnel on -Site before the project is started. For each subsequent field day, GSI will conduct a Site Safety Meeting before the start of work each day. The SSO wil l record items discussed on the Daily Site Safety Record (Attachment 1). As a means of tracking attendance, all on-Site personnel are expected to review and sign the HASP. The SSO will track on -Site / off-Site times on the Daily Site Safety Record. After lunch each day, GSI will hold a brief meeting to discuss any safety issues encountered during the morning hours that needs to be addressed in the afternoon, and to refresh all field personnel on the safety issues associated with the project tasks.
At the conclusion of each work day, the SSO will complete the Daily Site Safety Record form (Attachment 1).
90 GSI Job No.: 6609
TABLE OF CONTENTS
Figures
Figure 1 Site Map
Figure 2 Urgent Care Map
Figure 3 Emergency Room Location
91 Appv'd By:
Chk'd By:
Drawn By:
Map ID:
Issued:
GSI job No.
Former PPG Industries, Inc.
465 Crenshaw Boulevard, Torrance, California
SITE LOCATION MAP
6609LocMap
9-Aug-2024
6609
FIGURE 1
DRAFT
RMZ
DM
1 91
405
405
105105
Del Aire
Manhattan
Beach
Lawndale
El Segundo
Hawthorne
Gardena
213
107
405
405
Palos Verdes
Shoreline
Preserve
City of Torrance
Open Space
Rolling Hills
Estates
Lomita
Hermosa
Beach
Palos Verdes
Estates
Redondo
Beach
Torrance
91 105105
West Rancho
Dominguez
1 405
405
110
West Carson
Carson
California
Reference map provided by Esri ArcGIS Online, 2023.
r
0 1.50.75
Miles
Site Location
92 Collected via Google Maps:
1. Head east toward Crenshaw Boulevard
2. Turn right onto Crenshaw Boulevard
3. Turn left onto Torrance Boulevard
4. Turn right onto Accacia and 1St Stop Urgent Care is located on the right hand side
Google.com/maps
Not To Scale
FIGURE 2
URGENT CARE LOCATION MAP
1st Stop Urgent Care & Family Practice
2406 Torrance Boulevard, Torrance, CA
6609
93 Collected via Google Maps:
1. Head east toward Crenshaw Boulevard
2. Turn right onto Crenshaw Boulevard
3. Turn right onto Torrance Boulevard
4. Turn right onto Plaza Lane (immediately after Hawthorne Bo ulevard) Emergency Room is on the left.
Google.com/maps
Not To Scale
FIGURE 3
HOSPITAL LOCATION MAP
Providence Emergency Department - Torrance
4101 Torrance Boulevard, Torrance, CA 90503
6609
94 GSI Job No.: 6609
Attachments
95 GSI Job No.: 6609
Attachment 1
Safety Forms
96 GSI Job No.: 6109
GSI ENVIRONMENTAL INC.
DAILY SITE SAFETY RECORD
Project: GSI Job No.:
Location: Date:
Field Personnel:
Time Time
Name Company Onsite-Offsite Onsite-Offsite 1)
2)
3)
4)
5)
Additional Personnel (Attach additional sheets as needed.) Work Item/Personal Protective Equipment Level:
Task: PPE:
Task: PPE:
Task: PPE:
Air Quality Monitoring: Required (See record on next page.) Not Required
Safety Awareness Issues Discussed:
Site Safety Officer: Confirmation: “I have visually inspected the site for proper housekeeping, absence of slip or trip hazards, etc.”
Signature: Date:
97 GSI Job No.: 6109
HEAVY EQUIPMENT USE (IF APPLICABLE)
Type of Equipment & Model: Owned: Rented:
Certification: “I have been properly trained on the use of this equipment. I have inspected this equipment and confirmed it to be in good working condition.” Signature: Date:
ACCIDENTS/INJURIES/INCIDENTS
(Description of incident and actions taken. Attach additional sheets as needed.)
Air Quality Monitoring:
Photo Ionizing Detector (PID) Other (Specify)
Calibration Check: 10 X Scale Reading (ppm)
(95 ppm Methane Gas) 100 X Scale Reading (ppm)
Reading*
Time Activity Sample Point (ppm)
98 GSI Job No.: 6109
* Reading above background, sustained for 1 minute period.
Action Level ppm Action Level Exceeded?
Action Taken
Remarks
99 GSI Job No.: 6109
GSI ENVIRONMENTAL INC.
DAILY TAILGATE SAFETY MEETING
Project/Location: GSI Job No.
Site Safety Officer: Date:
Meeting Conducted By:
Meeting Attended By:
NAME COMPANY SIGNATURE
Additional Personnel (See Next Page)
Tasks to be Performed:
Potential Hazards and Hazard Avoidance Measures:
See Reverse
100
GSI Job No.: 6109
GSI ENVIRONMENTAL INC.
DAILY TAILGATE SAFETY MEETING
Heat Stress:
Chemical Exposure:
Biological Hazards:
Other:
Mechanical Hazards:
101
GSI Job No.: 6609
Attachment 2
Applicable NIOSH Pocket Guide Pages
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GSI Job No. 6609
SOIL MANAGEMENT PLAN
465 CRENSHAW BOULEVARD
TORRANCE, CALIFORNIA
Appendices
Appendix D. Disposal Facilities Location Map
128
Appv'd By:
Chk'd By:
Drawn By:
Map ID:
Issued:
GSI job No.
6609_SiteLocMap
26-Nov-2024
6609
FIGURE D-1
DRAFT
CBJ
DM
Former PPG Industries, Inc.
465 Crenshaw Boulevard, Torrance, California
DISPOSAL FACILITIES
LOCATION MAP
Sierra National
Forest
Sequoia
National Park
Sequoia
National Forest
Santa Clarita
Oxnard
Long Beach
Visalia
Lancaster
Bakersfield
Los Angeles
Desert National
Wildlife Range
Mesquite
Mojave National
Preserve
Death Valley
National Park
Angeles
National Forest
Avi Kwa Ame
National
Monument
Grand
Canyon-Parashant
NM
Henderson
Palmdale
Lake Havasu City
Cathedral City
Oceanside
Victorville
Indio
Murrieta
Mexicali
Las Vegas
San Diego
Tijuana
Riverside
El Pinacate and
Gran Desierto
de Altar
Biosphere
Reserve
Ensenada
California
Notes:
1) Reference map provided by Esri ArcGIS Online, 2023.
2) Hazardous soil will be transported to the “La Paz County Landfill” Located at 26999 AZ-95, Parker, AZ 85344.
3) Non-Hazardous soil will be transported to “Soil Safe of California” Located at 12328 Hibiscus Rd, Adelanto, CA 92301.
r
0 5025
Miles
Site Location
Soil Safe of California
La Paz County Landfill
129
Printed on Recycled Paper
https://dtsc.ca.gov/
January 14, 2025 SENT VIA ELECTRONIC MAIL
Mr. Aram Chaparyan
City Manager
Office of the City Manager
City of Torrance
3031 Torrance Boulevard
Torrance, California 90503
[email protected]
CONDITIONAL APPROVAL OF SOIL MANAGEMENT PLAN, FORMER PPG INDUSTRIES, 465 CRENSHAW BOULEVARD, TORRANCE (SITE CODE: 402059)
Dear Mr. Chaparyan:
The Department of Toxic Substances Control (DTSC) reviewed the revised “Soil Management Plan” (SMP) (GSI Environmental Inc., December 6, 2024), received on December 6, 2024, for the Former PPG (PPG) Industries site (Site), currently known as Mary K Giordano Torrance Regional Transit Center (also known as the Torrance Transit Center). The SMP was revised in response to DTSC comments on the draft version forwarded in a letter dated October 14, 2024. The SMP includes a soil sampling plan to identify the lateral and vertical extent of soil impacts that exceed residential screening levels to rescind the May 2010 land use covenant (LUC) to facilitate additional development options for the Site.
The Site is triangular and covers approximately 13.3 acres located immediately west of Crenshaw Boulevard, north of a railroad right of way, and between Del Amo Boulevard to the north and Maricopa Street to the south. PPG operated a manufacturing facility that produced paint coatings and resin at the Site from 1950 to 2000. PPG facility was constructed in 1950 and has been occupied and operated by PPG since that time.
Manufacturing operations were scaled down in 1999 to distribution only, in preparation for closure and demolition of the facility. The Site included an office, manufacturing 130
ATTACHMENT 4
Mr. Aram Chaparyan
January 14, 2025
buildings, and distribution facilities that were located in the central and southeastern portions of the PPG property. An asphalt-paved parking lot was located on the northeastern portion, a container storage area was located centrally on the north side, and the west corner was an open unpaved area used as a storm water retention basin.
All structures and fixtures onsite were demolished and removed in 2000. The Site is currently vacant with exposed soil at the surface. The Site is surrounded by mixed residential/commercial/industrial properties.
In 1988, a Resource Conservation and Recovery Act Feasibility Assessment defined 22 solid waste management units and three (3) areas of concern at the facility. PPG divided the Site into 26 conceptual areas based on functions or processes that characterized the areas. Phase II investigations and grid-based soil sampling indicated widely distributed low level volatile organic chemicals (VOCs) on the Site. The primary areas affected by VOCs were the former above-ground tank farms and former tank- cleaning areas. Elevated soil pH was detected in many parts of the Site. Scattered elevated levels of arsenic, cadmium, lead and mercury were also discovered.
The underground storage tank (UST) removal and subsequent soil and groundwater sampling indicated that gasoline had affected soil and groundwater in area 20 of the Site. PPG constructed a soil-vapor extraction system in the UST area in 2000 including the installation of ten (10) groundwater monitoring wells and has performed quarterly groundwater monitoring and sampling with Regional Water Quality Control Board (RWQCB) oversight. PPG completed groundwater remediation and the RWQCB issued a letter on November 18, 2008, indicating that no further action related to the petroleum release(s) at the Site is required, and requested proper abandonment of all UST-related wells. PPG abandoned 17 UST-related wells, including ten (10) monitoring wells, three (3) extraction wells, two (2) soil vapor extraction wells and two (2) sparge wells, and submitted a report to the RWQCB on March 3, 2009.
The Human Health Risk Assessment concluded that the Site poses insignificant risk under an industrial use scenario and the Removal Action Completion Report concluded that a deed restriction in the form of a Covenant to Restrict the Use of Property (Land Use Covenant or LUC) to industrial/commercial. The LUC identifies specific activities that are restricted at the Site. DTSC and the current property owner signed the LUC on May 10, 2010, which was recorded with the County of Los Angeles on May 21, 2010. As such, DTSC should be notified of any changes in use of the Site in the future.
131
Mr. Aram Chaparyan
January 14, 2025
DTSC hereby approves the SMP provided the enclosed comments are incorporated during future fieldwork and/or reports. Revisions to the SMP are no longer necessary.
Please submit a response-to-comments table along with the future report. The table should restate each comment and provide the associated response. Please notify DTSC a minimum of ten days in advance of fieldwork so that DTSC staff can be present at the Site during field activities.
If you have any questions regarding this project, please contact Mr. Johnson Abraham, Project Manager, at (714) 484-5380 or by e-mail at
[email protected]
o r
contact me at (714) 484-5472 or by e-mail at [email protected] .
Sincerely,
Aslam Shareef
Unit Chief
Brownfields Restoration and Schools Evaluation Branch
Site Mitigation and Restoration Program
mm/ja/as
Enclosure
cc: (via e-mail)
Mr. Danny Santana
Assistant City Manager
City of Torrance
[email protected]
Mr. Carlos Huizar
Management Associate
City of Torrance
[email protected]
132
Mr. Aram Chaparyan
January 14, 2025
cc: (via e-mail cont.)
Mr. Farid Achour, PhD, PG
Principal Hydrogeologist
GSI Environmental Inc.
[email protected]
Ms. Bita Tabatabai, PE
Principal Engineer
GSI Environmental Inc.
[email protected]
Ms. Ruby Kwan-Davis
Senior Environmental Scientist
California Department of Fish and Wildlife
[email protected]
Dr. Brian Estrella, Ph.D.
Staff Toxicologist
DTSC/Human and Ecological Risk Office
[email protected]
Mr. Andrew Leavitt
Senior Engineering Geologist
DTSC/Geological Services Branch
[email protected]
Mr. Johnson P. Abraham
Project Manager
DTSC/Brownfields Restoration and Schools Evaluation Branch [email protected]
Mr. Shahir Haddad, P.E.
Branch Chief
DTSC/Brownfields Restoration and Schools Evaluation Branch [email protected]
Brownfields Restoration and Schools Evaluation Branch Reading File – Cypress 133
DTSC COMMENTS
SOIL MANAGEMENT PLAN
FORMER PPG INDUSTRIES
465 CRENSHAW BOULEVARD
TORRANCE
The following DTSC staff reviewed and provided comments herein to the “Soil Management Plan” (SMP). Please contact the Project Manager if you have any questions regarding the comments. Original comments are available for review in DTSC project files.
Johnson Abraham
Project Manager
Brownfields Restoration and Schools Evaluation Branch
COMMENT:
1. Section 1.0, Introduction:
Response to DTSC comments (RTC) are adequate. The information provided in the RTC should be incorporated in the SMP and in the upcoming report.
Dr. Brian Estrella, Ph.D.
Staff Toxicologist
Human and Ecological Risk Office
At the request of the Site Mitigation and Restoration Program (SMRP), the Human and Ecological Risk Office (HERO) reviewed the documents titled,
a. “Response to DTSC Comments to the August 30, 2024, “Soil Management Plan” (SMP), DTSC Letter dated October 14, 2024, 465 Crenshaw Boulevard, Torrance”. The Response to Comments (RTC) was prepared by GSI Environmental Inc. for the City of Torrance and is dated December 2, 2024.
b. “Soil Management Plan, Former PPG Industries, 465 Crenshaw Boulevard, Torrance, California.” The revised Soil management Plan (SMP) was prepared by GSI Environmental Inc. for the City of Torrance and is dated December 6, 2024.
134
DTSC Comments
Soil Management Plan
Former PPG Industries
January 14, 2025
In September 2024, a SMP was provided to DTSC for HERO’s review. HERO provided comments in a memorandum dated October 1, 2024. The RTC and revised SMP were prepared in response to the comments and a revised version of the SMP was submitted for DTSCs review.
GENERAL COMMENTS:
1. HERO Comment #1 - 2: Addressed.
2. HERO Comment #3: Addressed. Soil and soil vapor samples will be evaluated for Total petroleum hydrocarbons (TPHs). HERO notes that in Section 4.5 it states, “The soil sample results will be compared to the DTSC-SLs (DTSC, 2022a and 2002b) and USEPA RSLs (USEPA, 2024) to identify areas which exceed residential screening levels for step-out sampling or excavation. For compounds without an established screening level, soil results will be compared to San Francisco Regional Water Quality Control Board’s (SFRWQCB) residential Environmental Screening Levels (ESLs); in particular for TPH.” Please note that for the evaluation of any sampling data in future reports, in accordance with the Toxicity Criteria Rule, the DTSC-SLs provided in DTSC HERO HHRA Note Number 3 should be used to evaluate chemical concentrations in environmental media at California sites and facilities. If a chemical is not listed in Note Number 3, the USEPA Regional Screening Levels (RSLs) should be used (November 2024). ESLs are only recommended for the evaluation of TPHs.
3. HERO Comment #4 – 7: Addressed.
4. HERO Comment #8: HERO recommended that soil vapor samples are collected in the winter and summer months to address temporal variability. The RTC states that the purpose of the soil and soil vapor sampling events is to delineate areas to be excavated. Following excavation, a second round of soil vapor sampling will be conducted. HERO recommends clarifying if imported fill will be used to backfill excavated area prior to soil vapor sampling. If clean soils are used to fill the excavated areas, soil vapor samples should be collected after an equilibrate period of typically 3 to 6 months post excavation. The post excavation soil and soil vapor sampling data should be used in the post-remediation human health risk assessment (HERO Comment #6). Additionally, clean import fill material 135
DTSC Comments
Soil Management Plan
Former PPG Industries
January 14, 2025
brought onto the property should conform with DTSC’s Information Advisory for Clean Import Fill Material, 2001 requirements.
5. HERO Comment #9 - 10: Addressed.
136