HomeMy WebLinkAboutContracts & Agreements_151-13_CCv0001.pdf EXHIBIT "C"
WORK PLAN
LORGEOTECHNICAL GROUP, INC.
Soil Engineering • Geology A Environmental
REMOVAL, EXCAVATION, AND
RESTORATION WORK PLAN
ASTs, TRANSFER TANK, AND
NEAR SURFACE DIESEL-IMPACTED SOIL
CITY OF REDLANDS PROPERTY
APN 0171-022-13
REDLANDS, CALIFORNIA
MAY 8, 2013
Prepared for:
City of Redlands
210 East Citrus Street
Redlands, California 92373
Prepared by:
LOR Geotechnical Group, Inc.
6121 Quail Valley Court
Riverside, California 92507
LOR Project No. 62934.23
6121 Quail Valley Court A Riverside, CA 92507 • (951)653-1760 A (951)653-1741(Fax) • www.lorgeo.com
19-438 Ruppert Street • P.O. Box 580799 A N. Palm Springs, CA 92258 • (760)329-2727 • (760) 329-2626 (Fax)
L OR
GEOTECHNICAL GROUP, INC.
Soil Engineering • Geology • Environmental
May 8, 2013
City of Redlands Project No. 62934.23
210 East Citrus Street
Redlands, California 92373
Attention: Mr. Oscar Orci, Development Services Director
Subject: Removal, Excavation, and Restoration Work Plan, ASTs, Transfer Tank,
and Near Surface Diesel-Impacted Soil, City of Redlands Property, APN
0171-022-13, Redlands, California
LOR Geotechnical Group, Inc. is pleased to submit this Removal, Excavation, and
Restoration Work Plan for the removal of aboveground storage tanks (ASTs), transfer
tank, and diesel-impacted soil at Assessor's Parcel Number (APN) 0171-022-13, an
approximate 1.37-acre property located on the north side of Redlands Boulevard,
approximately 400 feet west of Texas Street, City of Redlands, California.
We welcome any questions or comments you have regarding this work plan. We can
be reached by telephone at (951) 653-1760 or by email at mhunt@lorgeo.com or
kosmun@lorgeo.com.
Respectfully submitted,
LOR Geotechnical Group, Inc.
6121 Quail Valley Court • Riverside, CA 92507 • (951)653-1760 • (951) 653-1741 (Fax) • www.lorgeo.com
19-438 Ruppert Street • P.O. Box 580799 • N. Palm Springs, CA 92258 • (760) 329-2727 • (760)329-2626 (Fax)
Table of Contents
Page No.
EXECUTIVE SUMMARY 3
INTRODUCTION 3
SITE LOCATION AND BACKGROUND 4
SLUDGE, WATER REMOVAL. AND CLEANING 5
Analytical Results of the Sludge and Water 5
REMOVAL OF DIESEL-IMPACTED SOIL 5
Profile Sampling 6
Offsite Waste Transport 6
Offsite Disposal Facilities 7
Confirmation Soil Sampling Rationale 8
Analytical Results of Diesel-Impacted Soil 8
SITE RESTORATION 8
RECORD KEEPING 9
HEALTH AND SAFETY 9
PROJECT ORGANIZATION 9
Owner 9
Environmental Consultant 10
Remediation Contractor . . . . . . . . . . . . . . . . . . . . . . . 10
Regulatory Agencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0
Responsibilities of The Environmental Consultant 1 0
LOR GEOTECHNICAL GROUP,INC.
Table of Contents
Page No.
Responsibilities of Remediation Contractor 10
ESTIMATED PROJECT SCHEDULE 11
CLOSURE REPORT 11
CLOSURE 12
REFERENCES 13
APPENDICES
Table 6.1 AST and Transfer Tank Analytical Results . . . . . . . . . . . . Appendix A
Table 6.2 Analytical Results of Soil Samples from the AST Area Appendix B
LIST OF FIGURES
Color Aerial Photograph Figure 1
Soil Boring Locations on Color Aerial Photograph Figure 2
LOR GEOTECHNICAL GROUP,INC.
City of Redlands Project No. 62934.23
May 8, 2013
EXECUTIVE SUMMARY
This Removal, Excavation, and Restoration Work Plan has been prepared by LOR
Geotechnical Group, Inc. for the City of Redlands to address the removal of five (5)
existing aboveground storage tanks (ASTs), one (1) transfer tank, and diesel-impacted
soil associated with these structures at Assessor's Parcel Number (APN) Ql71-O22'
13. This work plan describes the logistical procedures and field work that will be
carried out at the site (see Figure 1) for the removal and disposal of the sludge and
water in the ASTs and transfer tank, the recycling of the ASTs, transfer tank, and
piping, and the removal and disposal of associated diesel-impacted soil. After the
removal of the ASTs, transfer tank, and associated diesel-impacted soil, the site will
be restored to a condition that maintains the current westerly flow of runoff. All
contractors working on this project shall comply with applicable Federal, state and
local regulations governing health and safety, including all applicable California OSHA
requirements as promulgated in Title 8 of the California Code of Regulation (8 CCR),
Chapter 4, Subchapter 4, Construction Safety Orders, and Chapter 4, Subchapter 7,
General Industry Safety Orders.
The Site Characterization Study (SCS) conducted by this firm documents the rough
lateral and vertical extent of the hydrocarbon-impacted (mostly diesel-range
hydrocarbons) soil associated with the ASTs and transfer tank. The data gathered
during the SCS was used to evaluate the risks and hazards associated with leaving the
ASTs, transfer tank, and associated diesel-impacted soil in place. Based on the
information gathered during the SCS''ronnovo| of the ASTs and transfer tank, and
excavation and offsite disposal of diesel-impacted soil was selected as the remedy to
restore the site to a state acceptable for closure by the United States Environmental
Protection Agency, Region IX (USEPA). The amount of diesel-impacted soil directly
beneath the ASTs was not determined during the SCS; therefore, the location and
removal depth of the impacted soil directly beneath the ASTs will be determined in the
field after the removal of the ASTs. However, the removal of the diesel-impacted soil
will not exceed a maximum depth of approximately 3 feet below ground surface (bgs)
for this pr 'ect'
The removal, excavation, and restoration activities are anticipated to last
approximately four weeks. Site activities will begin by removing the sludge and water
present in the five ASTs and transfer tank for disposal. The amount of sludge and
water in the ASTs and transfer tank is roughly estimated to be 50,000 gallons. The
five corrugated sheet metal ASTs and transfer tank will then be cleaned, dismantled,
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City of Redlands Project No. 62934'23
May 8, 2[}13
and removed for recycling. Underground and aboveground piping associated with the
ASTs and transfer tank is present, and should be removed, cleaned as necessary, and
recycled. Once the ASTs, piping, and transfer tank are oernoved, the diesel-impacted
soil around and under the ASTs will be removed for offsite disposal. The ASTs sif on
asphalt concrete. The exact thickness was not determined, but the asphalt concrete
is deteriorated and should be considered part of the removal of the impacted soil.
Based on a maximum removal depth of 3 feet below the AST area, we have estimated
400 cubic yards (cy) of diesel-impacted soil will be excavated for disposal. However,
during excavation operations, yardage will increase due to the nature of earth removal
operations. A factor of 30 percent was applied to arrive at an estimate of
approximately 520 cy that will be removed for offsite disposal. Using a conversion
factor of 1 '5 for cy of soil to tons of soil gives approximately 780 tons of
diesel-impacted soils for disposal.
Once excavation activities be8in, the diesel-impacted soil should be removed within
a week. The excavated soil may be stockpiled on and covered with plastic or placed
directly into disposal containers. It is the contractors responsibility to determine the
suitability of their methods and means for the removal of the diesel-impacted soil.
The diesel-impacted soil will be profiled in accordance with the requirements of the
facility accepting the waste. After profile sample results are obtained and the facility
provides written acceptance of the waste soil, it will be transported to the waste
facility under manifest for offsite disposal. Confirmation sampling will be conducted
in areas where soils in the AST area were removed to a depth of less than 3 feet bgs.
For example, if the removal depth in an area was down to 2 feet bgs, then a
confirmation sample would be obtained to demonstrate the diesel-range petroleum
hydrocarbons were removed to the cleanup goal of 83 mg/kg or less, and continued
excavation in that area is unnecessary. Once the removal of diesel-impacted soil is
' completed, the excavated area will be backfilled with clean import soil. The area of
the ASTs and transfer tank will be brought to an elevation that allows the original
drainage to remain unimpeded, that is, the site should drain to a small drainage west
of the AST area.
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City of Redlands Project No. 62934.23
May 8, 2013
INTRODUCTION
This Removal, Excavation, and Restoration Work Plan (Work Plan) has been prepared
by LOR Geotechnical Group, Inc. (LOR) to implement the removal of the ASTs, .
transfer tank, and diesel-impacted soil from the City of Redlands Property, APN 0171-
022-13,
171'O22-13, an approximate 1 .37-acre property located on the north side of Redlands
Boulevard, approximately 400 feet west of Texas Street, City of Redlands, California
(Figure 1). This Work Plan describes the removal of the ASTs, transfer tank, and
associated piping, the excavation, management, and disposal of diesel-impacted soil,
and site restoration after removal activities are completed.
The remediation contractor is solely responsible for the safe performance of all agreed
services by its employees and/or subcontracted service providers and implementation
of any appropriate/required written health and safety documentation. The work to be
performed will be classified as HAZWOPER and will require employees to possess 40-
hour training certification. All work will be performed in accordance with applicable
Federal, state and local regulations governing health and safety, including all applicable
California OSHA requirements as promulgated in Title 8 of the California Code of
Regulation (8 CCR), Chapter 4, Subchapter 4, Construction Safety Orders, and
Chapter 4, Subchapter 7, General Industry Safety Orders.
The remediation contractor must take all reasonable steps and precautions to prevent
accidents and/or ijuries to site personnel, visitors, or the surrounding environment and
community. The contractor will immediately report all ijuries, illnesses, and accidents
and provide follow-up documentation. The contractor is responsible for providing its
employees with all necessary personal protective equipment (PPE) and supplies as
warranted by the actions of its employees. At a minimum, contractor personnel will
be required to wear the following PPE, regardless of existing site conditions/hazards;
hard hat, safety-toe boots, safety glasses, chemically-protective gloves. Tank tops,
shorts, or sleeveless shirts will not be permitted on-site at any time.
Implementation of this plan generally consists of the following steps:
• Prepare a site-specific Health and Safety Plan for the following work;
• Removal and disposal of the sludge and water currently in the five ASTs and
one transfer tank (roughly estimated at 50'000 gallons);
• Rinse out the five corrugated steel ASTs and one corrugated steel transfer tank,
and remove them and the associated steel piping for recycling;
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• Excavate and remove diesel-impacted soil from beneath and around the ASTs
and transfer tank to a maximum depth of 3 feet bgs, for disposal at an
appropriate offsite disposal facility (estimated at 780 tons);
• Conduct profile sampling, as required by the disposal facility, for the
acceptance of the waste soil;
• Conduct confirmation sampling, in those areas where less than 3 feet of
diesel-impacted soil was removed to determine whether cleanup goals of less
than 83 mk/kg diesel-range hydrocarbons have been satisfied, and if needed,
conduct further excavation followed by additional confirmation sampling or the
maximum 3-foot removal depth is attained; and
• Restore the area by obtaining clean import soil for filling, and grading to restore
the site so that it drains to the existing small drainage west of the AST area
(estimated 500 cubic yards).
SITE LOCATION AND BACKGROUND
The site, APN 0171-022-13, is an approximate 1 .37-acre property located on the
north side of Redlands Boulevard, approximately 400 feet west of Texas Street, City
of Redlands, California (Figure 1). The area of concern is the northeast portion of the
site where five (5) ASTs and one (1) transfer tank are located (Figure 2). The ASTs
are 25 feet in diameter, and at least 15 feet tall. The ASTs are constructed of
corrugated metal construction, and sit on a thin layer of deteriorating asphalt concrete.
The area of the ASTs is topographically higher than the adjacent ground to the south,
where an old concrete retaining wall is present.
The transfer tank, also corrugated metal construction, is approximately 6 feet deep
and 6 feet in diameter, and is located between AST #2 and AST #3 (see Figure 2). It
is buried in the ground with approximately 2 feet above ground, and has an easily
removable top.
Underground and aboveground piping is present connecting the ASTs, and possibly,
the transfer tank. No dried product was visible in the portion of the piping that was
on the surface, so the piping should be cleaned out as necessary, and removed at the
same time as the ASTs, and recycled.
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L OR GEOTECHNICAL GROUP,INC,
City of Redlands Project No. 62934.23
May 8, 2013
SLUDGE, WATER REMOVAL, AND CLEANING
A vacuum truck will be needed to remove the sludge and water from the ASTs and
transfer tank. Some of the ASTs have partial openings at the top, and some are
closed. The removal of the top of the ASTs would seem the most cost effective
method for pumping out the ASTs; however, it will be the contractor's responsibility
to determine the means and methods for pumping out the sludge and water from the
ASTs and transfer tank, and cleaning them for recycling. We have estimated two to
three feet of sludge and water (approximately 50'000 gallons) is present in the five
ASTs and transfer tank. The cleaning of the ASTs for recycling will probably require
pressure washing. Entering a closed or partially closed tank(s) will require the
contractor to complete the necessary permitted confined space entry requirements
(California Code of Regulations, Title 8, Section 5157, Confined
Spaces).
Analytical Results of the Sludge and Water
Based on the results of the referenced SCS conducted by this firm (LOR, 2012), the
sludge and water in the ASTs and transfer tank had reportable concentrations of
petroleum hydrocarbons in the diesel range up to 930'000 mg/kg and 46.9 milligrams
per liter, respectively. Concentrations of select metals were reported in the sludge and
water samples, with none above USEPA Regional Screening Levels (RSLs), except for
the water sample with 0.0246 mg/L cadmium and 17.2 mg/L zinc, both of which
exceed the RSLs for tap water. PCBs were reported in all of the sludge samples with
Aroclor 1[)16 up to 3.6 mg/kg and Aroclor 1260 up to 2.9 mg/kg, and in the water
sample, 36 pg/I Aroclor 1016 and 29 pg/I Aroclor 1260. The semi-volatile organic
compounds (SVOCs) 2-methylnaphthalene at 298 mg/kg and phenanthrene at 388
mg/kg, and the volatile organic compounds (VOCs) naphthalene up to 6.8 mg/kg and
1 '2'4''trinnotMV|benzeno up to 0.85 mg/kg, were reported in some of the samples.
Concentrations of organochlorine pesticides (OCPs) were not reported. The table of
analytical results for the ASTs sludge samples and transfer tank water sample are
provided within Appendix A.
REMOVAL OF DIESEL-IMPACTED SOIL
Once the ASTs, transfer tank, and associated piping have been removed, then the
underlying asphalt concrete and diesel-impacted soil can be excavated for disposal.
Eleven soil borings (B'l through B-11) were placed, where accessible, around the
ASTs and transfer tank (Figure 2). Based on the analytical results, there appears to be
variable depths of diesel-impacted soil around the ASTs. The area of impacted soil is
roughly 60 feet by 80 feet. Equipment, appropriate for the size of the area, should be
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Project �o'
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May 8, 2013
used. The removal depth will not exceed 3 feet bgs. In areas where there is no
significant indication of the presence of diesel-impacted soil and/or the removal depth
is less than 3 feet bgs, then confirmation samples will be taken to document the
absence of diesel-impacted soil at those locations. All impacted soil beneath 3-feet
deep will be left in place, and covered with the' clean fill soil during restoration
activities.
Based on a maximum removal depth of 3 feet below the AST area, we have estimated
400 cubic yards (cy) of diesel-impacted soil will be excavated for disposal. However,
during excavation operations, yardage will increase due to the nature of earth removal
operations. A factor of 30 percent was applied to arrive at an estimate of
approximately 520 cy that will be removed for offsite disposal. Using a conversion
factor of 1 .5 for cy of soil to tons of soil gives approximately 780 tons of
diesel-impacted soils for disposal.
Profile Sampling
The number of profile samples and the analysis required will be determined by the
facility accepting the liquid or solid waste. All profile samples will be tested in
accordance with EPA Publication, SW-846, "Test Methods for Evaluating Solid Waste,
Physical, Chemical Methods", Third Edition or as required by the waste facility.
Offsite Waste Transrort
The contractor will be responsible for arranging transport of the diesel-impacted soil.
The transporter will be fully licensed and insured to transport the impacted soil.
Material for offsite disposal will be transported in covered trucks to the designated
disposal facility. Prior to loading, all trucks will be staged to avoid impacts to the local
streets. Traffic will be coordinated in such a manner that, at any given time, no more
than around three trucks will be at the site, to reduce truck traffic on surrounding
surface streets and reduce dust generation during transportation. While at the site, all
vehicles will be required to maintain slow speeds for safety purposes and for dust
control measures.
Trucks will be loaded at the designated portion of the excavation staging area.
Excavated soil will be loaded onto trucks for transportation to the designated disposal
facility. Rattle gates will be utilized at the entrance to the site during the loading
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City of Redlands Project No. 62934.23
May 8, 2013
operation, thereby avoiding the creation of dust in the air or dirt from the truck tires
on the street. The trucks will be covered to prevent soil and/or dust from spilling out
of the truck during transport to the disposal facility. Prior to leaving the load-out area,
each truck will be inspected by the remediation contractor personnel to ensure that
the soil is adequately covered, the trucks are cleaned of overburdened soil, andth-e
shipment is properly manifested. Each truck will have the proper transport placards
displayed and paper work. Water spray or mist, as appropriate, will be applied during
soil loading operations to minimize dust.
Transportation of the excavated material will be on arterial streets and/or freeways
approved for truck traffic, to minimize any potential impact on the local neighborhood.
In general, the transport trucks will exit the site on Redlands Boulevard, and travel
west to Tennessee or Alabama Streets, to either the 1-10 or 1-210 Freeway, on route
to the designated facility.
The remediation contractor will be required to have a contingency plan prepared for
emergency situations, including vehicle breakdown, accident, waste spill, waste leak,
fire, explosion, etc. during transportation of excavated soils from the site to the
designated disposal facility.
Offsite Disposal Facilities
Based on the results of the waste profile and classification, the liquid and soil will be
transported to a proper offsite disposal facility. Disposal of the tank contents and rinse
water and the excavated soil will be performed in accordance with all applicable laws
and regulations.
Facilities that may accept the liquid/sludge, upon confirmation of analysis and profile,
inc|ude; Qemnanno Kerdon, Crosby&Overton, Waste Management(McKitric), Republic
Services (Copper Mountain), and Clean Harbors (Buttonwillow).
Facilities that may accept the diesel-impacted soil, upon confirmation of analysis and
profile, include; Soil Safe Adelanto, Clean Harbors Buttonwillow, Republic Services
(Lapaz, AZ), Republic Services (CopperMountoin),VVamtm Managements (Butterfield
or Mckitric facilities), Waste Management, Thermal Remediation Solutions (Azusa).
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City of Redlands Project No. 62934.23
May 8, 2013
The City of Redlands onsite representative will be provided with copies of shipping
documentation for each truckload of material transported offsite for disposal.
Confirmation Soil Sampling Rationale
As documented in the SCS soil sample analytical data, concentrations of diesel-range
hydrocarbons are present only around the ASTs. No other compounds of concern were
detected at reportable or significant concentrations. Therefore, diesel-range
hydrocarbons are the only compound of concern that warrants analysis for the
confirmation sampling (USEPA Method 8015). The proposed cleanup goal of 83 mg/kg
or less is based on the California Regional Water Quality Control Board, San Francisco
Bay Region, Environmental Screening Levels (2013) for shallow residential soil (<3
m bgs) where groundwater is a current or potential source of drinking water.
Field conditions will dictate the number of confirmation samples take; however, a
minimum of six confirmation samples at the bottom of the excavations should be
anticipated for analysis of diesel-range hydrocarbons. The confirmation samples will
be obtained by the City of Redlands onsite representative, and will have a maximum
five-day turnaround time.
Analytical Results of Diesel-|nnpactod3oi|
The analytical results include reportable concentrations of select metals, none greater
than USEPA RSLs. Diesel-range hydrocarbons were reported up to 4,910 mg/kg, to
a maximum depth of 15 feet bgs. Petroleum hydrocarbons, in the oil range, were
reported up to 690 mg/kg at near surface depths. PCBs, reported as Aroclor 1260'
were reported in four of the samples at concentrations less than USEPA RSLs.
Concentrations of OCPs, VOCs, and SVOCs were not reported. No significant debris
was encountered in the borings. A complete table of the analytical results for the soils
around the ASTs and transfer tank are provided within Appendix B.
SITE RESTORATION
Following successful removal of the ASTs, transfer tank, and piping, and the
excavation and removal of diesel-impacted soil, clean import will be used to backfill
the excavation area. The contractor should determine the amount of import soil
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City of Redlands Project No. 62934.23
May 8, 2013
needed after the excavation and removal operation is completed. The area of the ASTs
will be contour graded to drain to the west to the shallow drainage currently present
or as directed by the City of Redlands.
RECORD KEEPING
The City Redlands onsite representative will be responsible for maintaining a field
logbook during the removal activities. The field logbook will serve to document
observations, personnel onsite, truck arrival and departure times, and other vital
project information. The field logbook may be supplemented with other
documentation, including a soil sample log, photograph log, etc.
HEALTH AND SAFETY
A site-specific health and safety plan (HASP) will be prepared by the remediation
contractor who will provide the methods, means, and personnel to conduct the work.
The HASP will be approved by the City of Redlands. The HASP should be available
onsite during field activities. All personnel working at the subject site should be
familiar with the HASP and sign a daily sign-in sheet.
On a daily basis, prior to commencement of field activities, a health and safety
meeting should be held to brief site personnel on chemical and physical hazards related
to the prject, pject scope, emergency procedures, and the location and route to the
nearest medical facility. Typical personal protective equipment (PPE) around heavy
equipment will include steel-toed boots, long pants, hard hat, safety glasses, safety
vest, and gloves.
PROJECT ORGANIZATION
A qualified and experienced project team wiU execute the excavation, removal, and
disposal activities identified in this work plan. The following project team will apply
for this project:
Owner: City of Redlands; the contact is Mr. Oscar Orci.
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LOR GEOTECHNICAL GROUP,INC.
City of Redlands Project No. 62934.23
May 8, 2013
Environmental Consultant: LOR Geotechnical Group; the contact is Mr. M. Kevin
Osmun or Mr. Mathew Hunt.
Remediation Contractor: To be determined.
Regulatory Agencies: The lead agency is the USEPA; the contact is Mr. Robert Wise.
Responsibilities of The Environmental Consultant
The Environmental Consultant will provide overall field management and technical
services for the project, to include confirmation sampling of the excavation bottom
and final report to the USEPA for site closure.
Responsibilities of Remediation Contractor
The City will contract with a qualified remediation contractor for the removal of the
ASTs, transfer tank, and all associated piping, excavation of diesel-contaminated soil,
not to exceed 3 feet bgs, offsite transportation and disposal of the non-hazardous soil,
and restoring the site to a contour graded condition. The selected contractor will be
fully licensed, certified, registered, permitted, and/or insured to conduct the work
described.
The responsibilities of the remediation contractor will include:
• Removal of the sludge and water within the ASTs and transfer tank;
• Rinsing of the ASTs, transfer tank, and piping as necessary;
• Dismantling/removal of the ASTs, transfer tank, and piping for recycling;
• Excavation of diesel-contaminated soil to-a maximum of 3 feet bgs;
• Waste profile sampling and analysis of the excavated soil for offsite disposal
to an appropriate disposal facility; and
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City of Redlands Project No. 62934.23
May 8, 2013
• Finish contour grading of the area for drainage into the small drainage located
to the west of the AST area.
In fulfilling the above responsibilities, the remediation contractor needs to perform the
following tasks:
• Obtain all appropriate permitting associated with the excavation, transport, and
disposal of the non-hazardous material, complying with local, State, and
Federal regulations (no underground storage tank (UST) permits will be
required, per the US EPA);
• Manage the work area, including work area control (with the assistance of the
City), engineering controls (including dust control), and securing the work area
following daily activities;
• Develop and implement a HASP;
*
Equipment decontamination; and
• Drainage control.
ESTIMATED PROJECT SCHEDULE
The project should require about four weeks to complete.
CLOSURE REPORT
A closure report will be prepared, documenting the field activities associated with the
removal of the ASTs, transfer tank, piping, and diesel-contaminated soil, and
restoration activities. The report will include appropriate figures, tables, photographs,
disposal documentation, etc. Conclusions e-nd recommendations will be developed
within the report, supporting a request for closure of the site by the EPA. The closure
of the site by the EPA does not mean that the site has unrestricted use.
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City of Redlands Project No. 62934.23
May 8, 2013
CLOSURE
We appreciate this opportunity to be of service and trust this work plan provides the
information desired at this time. Should questions arise, please do not hesitate to
contact this office.
Respectfully submitted,
LOR Geotechnical Group, Inc.
Muir
\solFNEs,3/04,1e,,
Mathew L. Hunt, REA I 7902 o,
Environmental Scientist g
No. C55116 grin
Kcp.06/30/1
, ier
M. Kevin Osmun, CE 55116
Vice President
MKO:MLH\amp
Distribution: Addressee (2) and PDF
Mr. Robert Wise, USEPA (1 )
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LOR GEOTECHNICAL GROUP,INC.
REFERENCES
California Regional Water Quality Control Board, San Francisco Bay Region, 2013,
Summary Table A, Environmental Screening Levels (ESLs), Shallow Soils ( m
bgs), Groundwater is Current or Potential Source of Drinking Water, February,
2013.
LOR Geotechnical Group, Inc., Sampling and Analysis Plan, Assessor's Parcel
Number [)171-022-13' Redlands, California, Project Number 62934.2, dated
November 7, 2012.
LOR Geotechnical Group, Inc., Site Characterization Study, Assessor's Parcel
Number 0171-022-13, Rod|andm, California, Project Number 62934.22, dated
March 1 , 2013.
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APPENDIX A
Table 6. 1 AST and Transfer Tank
Analytical Results
11\.113. GEOTECHNICAL GROUP,INC.
TABLE 6.1
AST AND TRANSFER TANK ANALYTICAL RESULTS
Sample Date Total Metals TPH-D TPH-MO OCPs VOCs PCBs SVOCs
ID Sampled (mg/kg) (IMAM (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg)
Ba-0,611,Cd-2.32,Cu-0.818,Pb-31.8,
AST-1 12/12/12 172,000 ND ND ND Arodor 1016-2.8 ND
Ni-0.509,V-1.0,Zn-347
AST-2 12/12/12 Ba-63.3,Cu-0.540,Pb-38.6,Zn-46.0 936,000 ND ND ND Arodor 1016-2.4 ND
. .
Ba-3.60,Cd-1.08,Cu-0.886,Pb-28.2, naphthalene-1.1
AST-3 12/12/12 314,000 ND ND Aroclor 1016-3.2 ND
V-0.833,Zn-384 1,2,4,-trimethylbenzene-0.28
Cr-1,28,Pb-4.73,Ni-0.701,V-0.516, naphthalene-6.8 Arodor 1016-3.6 2-methylnaphthalene-298
AST-4 12/12112 130,000 ND ND
Zn-40.3 1,2,4,-trimethylbenzene-0.85 Aroclor 1260-2.9 phenanthrene-388
Ba-1.50,Cd-1.88,Cu-2.71,Pb-41.6,
AST-5 12/12/12 368,000 ND ND ND Aroclor 1016-1.8 ND
V-1.10,Zn-376
Ba-0.0987*,Cd-0.0246',Cu-0.0182*, Aroclor 1016-36**
17-1 12112/12 46.9* ND ND ND ND
Pb-0.902*,Ni-0.0146*,Zn-17.2* Aroclor 1260-29**
_ .
Notes:
ID=identification
mg/kg=milligrams per kilogram
TPH-D=total petroleum hydrocarbons as diesel
TPH-MO=total petroleum hydrocarbons as motor oil
OCPs=organochlorine pesticides
VOCs=volatile organic compounds
PCBs=polychlorinate biphenyls
SVOCs=semi-volatile organic compounds
Ba=barium;Cd=cadmium;Cr=chromium;Cu=copper;Pb=lead;Ni=nickel;V=vanadium;and Zn=zinc
ND=not detected(ND)at the laboratory reporting limit(RL)
6.8=analytical results greater than the United States Environmental Protection Agency Region IX Regional Screening Levels(November 2012)for residential soil or tap water are shown in BOLD
* analytical result in milligrams per liter
**=.analytical result in micrograms per liter
Page 1 of 1
APPENDIX B
Table 6.2 Analytical Results of
Soils Samples from the AST Area
L OR GEOTECHNICAL GROUP,INC.
TABLE 6.2
ANALYTICAL RESULTS OF SOIL SAMPLES FROM THE AST AREA
. _
Sample
Sample Date Metals TPH-D TPH-MO SVOCa OCPs PCBs VOCs
Depth
ID Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg)
(feet bgs)
Ba-32.3,Cr-11.4,Co-4.68,Cu-8.03,Pb-2.75,Ni-7.38,
B-1-3 12/17/12 3 ND ND ND ND ND ND
V-19.0,Zn-23.3
Ba-34.4,Cr-10.6,Co-5.03,Cu-8.80,Pb-1.86,Ni-7.25,
8-1-9 12/17/12 9 ND ND NA NA NA ND
V-18.8,Zn-22.4
Ba-33.1,Cr-10.1,Co-4.69,Cu-7.57,Pb-1.93,Ni-6.77,
B-1-15 12/17/12 15ND ND NA NA NA ND
V-18.1,Zn-20.9
Ba-38.0,Cr-15.4,Co-7.32,Cu-16.0,Pb-2.76,Ni-10.7,
B-1-20 12/17/12 20 ND ND NA NA NA ND
V-30.7,Zn-26.2
. ,
Ba-41.3,Cd-2.76,Cr-11.3,Co-4.76,Cu-17.9,Pb-134,
B-2-1 12/17/12 1300 ND ND NA NA NA
Ni-8.19,V-22.2,Zn-464
Ba-35.0,Cr-13.5,Co-5.68,Cu-9.39,Pb-3.00,Ni-7.95,
8-2-3 12/17/12 3ND ND ND ND ND ND
V-22.5,Zn-23.5
Ba-46.8,Cr-11.7,Co-5.27,Cu-8.68,Pb-2.32,Ni-7.34,
B-3-3 12/17/12 3400 72.0 ND ND Aroclor 1260 -0.05 ND
V-22.1,Zn-23.6
Ba-28.5,Cr-12.6,Co-4.97,Cu-8.90,Pb-2.24,Ni-6.76,
B-3-9 12/17/12 9460 78,0 ND NA NA NA
V-27.5,Zn-19.5
Ba-36.6,Cr-11.2,Co-4.49,Cu-8.51,Pb-1.88,Ni-6.45,
B-3-15 12/17/12 15980 96.0 ND NA NA NA
V-16.2,Zn-20.6
, .
Ba-54.5,Cr-14.6,Co-6.28,Cu-10.3,Pb-2.44,Ni-9.36,
B-3-20 12/17/12 20ND ND ND NA NA NA
V-22.0,Zn-28.1
. ,
Ba-37.2,Cd-1.42,Cr-9.70,Co-4.38,Cu-13.6,Pb-37.5,
B-4-0 12/17/12 04,910 690 ND NA NA NA
Ni-6.84,V-16.1,Zn-320
Ba-35.0,Cr-11.6,Co-5.06,Cu-8.16,Pb-2.35,Ni-7.36,
B-4-3 12/17/12 356.0 ND ND ND ND ND
V-22.6,Zn-22.4
' .
Ba-42.7,Cr-14.4,Co-6,20,Cu-13.7,Pb-2.49,Ni-8.94,
8-5-3 12/17/12 3ND ND ND ND ND ND
V-28.5,Zn-25.9
.
Ba-48.2,Cr-15.3,Co-7.08,Cu-10.3,Pb-2.72,Ni-10.2,
B-6-3 12/17/12 3490 78.0 ND ND Aroclor 1260-0.05 ND
V-24.9,Zn-115
.
Ba-59.1,Cr-15.4,Co-6.01,Cu-10.2,Pb-10.4,Ni-10.2,
B-7-3 12/17/12 3916 ND ND ND Aroclor 1260-0.14 ND
V-24.1,Zn-98.0
Ba-62.4,Cr-16.4,Co-8.79,Cu-10.7,Pb-2.91,Ni-10.5,
8-7-3 Dup 12/17/12 3 629 ND ND ND Aroclor 1260-0,15 ND
V-25.6,Zn-65.4
. ,
Ba-67.5,Cr-15.7,Co-6.82,Cu-10.7,Pb-2.62, Ni-10.3,
B-8-3 12/17/12 3ND ND ND ND ND ND
V-27.0,Zn-233
Page 1 of 2
TABLE 6.2
ANALYTICAL RESULTS OF SOIL SAMPLES FROM THE AST AREA
Sample
Sample Date Metals TPH-D TPH-MO SVOCs OCPs PCBs VOCs
Depth
ID Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg)
(feet bgs)
Ba-28.2,Cr-9.59,Co-4.38,Cu-7.22,Pb-3.74,Ni-8.55,
8-9-3 12/17/12 3 ND ND NA ND NA NA
V-16.7,Zn-35.4
Ba-36.7,Cr-11.1,Co-4.74,Cu-7.71,Pb-2.93,Ni-7.14,
8-9-9 12/17/12 9 ND ND ND NA NA NA
V-16.3,Zn-31.9
Ba-30.5,Cr-10.4,Co-3.87,Cu-7.76,Pb-1.71,Ni-6.18,
B-9-14 12/17/12 14 ND ND ND NA NA NA
V-14.2,Zn-19.6
Ba-58.7,Cr-15.6,Co-7.07,Cu-12.2,Pb-3.11,Ni-10.8,
B-10-3 12/17/12 3 ND ND NA ND NA NA
V-23.2,Zn-32.5
Ba-25.8,Cr-8,61,Co-3.54,Cu-6.81,Pb-1.91,Ni-5.85,
B-11-3 12/18/12 3 ND ND NA ND NA NA
V-13,5,Zn-16.7,Hg-0.052
Ba-39.4,Cr-14.4,Co-5.91,Cu-11.2,Pb-2.47,Ni-8.32,
B-11-9 12/18/12 9ND ND ND NA NA NA
V-26.6,Zn-21.6
Ba-63.8,Cr-14.1,Co-5.95,Cu-8.18,Pb-1.71,Ni-8.79,
B-11-14 12/18/12 14ND ND ND NA NA NA
V-20.3,Zn-26.9
- .
Notes:
ID=identification
bgs=below ground surface
mg/kg=milligrams per kilogram
TPH-D=total petroleum hydrocarbons as diesel
TPH-MO=total petroleum hydrocarbons as motor oil
SVOCs=semi-volatile organic compounds
OCPs=organochlorine pesticides
PCBs=polychlorinated biphenyls
VOCs=volatile organic compounds
Ba=barium;Cd=cadmium;Co=cobalt;Cr=chromium;Cu=copper;Pb=lead;Hg=mercury;Ni=nickel;V=vanadium;and Zn=zinc
ND=not detected(ND)at the laboratory reporting limit(RL)
NA=not analyzed
Page 2 of 2
Figures
Color Aerial Photograph and
Soil Boring Locations on Color Aerial Photograph
LOR GEOTECHNICAL GROUP,INC.
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Source:Google Earth Computer Program
SOIL BORING LOCATIONS ON COLOR AERIAL PHOTOGRAPH
PROJECT: CITY OF REDLANDS PROPERTY,APN 0171-022-13,REDLANDS,SAN BERNARDINO COUNTY,CA PROJECT NO.: 62934.23
CLIENT: CITY OF REDLANDS FIGURE: 2
DATE: MARCH 2013
LOR Geotechnical Group, Inc. APPROX.SCALE: 1"=86'