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Appendix E2
Phase II Environmental Site Assessment
MASTER CASE NO. 20-073
INITIAL STUDY
Offices In: California • Nevada
PO Box 904, Clayton, CA 94517 ● (925) 673-5500 / fax (925) 673-5507
July 8, 2020 Project #20-5052A
Mr. Steve Landis
MV AMCV LLC
8628 Hillside Road
Alta Loma, CA 91701
RE: Limited Shallow Soil Sampling – Proposed Residential Development
(Approximately 9 Acres) APNs 0233-122-60-0000, 0233-122-63-0000, 0233-
122-28-0000, and 0233-122-29-0000 (9092 Catawba Avenue)
Dear Mr. Landis:
Pinnacle Environmental, Inc. (PEI) completed a Phase I Environmental Site Assessment (ESA)
of the above-referenced subject property dated May 26, 2020 for MV AMCV, LLC (Client).
The Phase I ESA concluded (directly excerpted):
● PEI’s historical review indicates the subject property was utilized for agricultural
purposes (possibly intermittently) from at least 1938 until at least 2004, and most
recently on the eastern parcels by Orchid Way, Inc. (circa 2003-2004). Agricultural
chemicals in use today are applied in dilute concentrations and, when used properly,
degrade relatively quickly. However, environmentally persistent pesticides commonly
applied prior to the 1980s can linger in the soil for many years. It is not known if
environmentally persistent pesticides have been applied to the subject site in the past.
Based upon the apparent length of time that has elapsed since the majority of the
agricultural usage has occurred, and the apparent lack of intensive agricultural usage,
there appears to be a lower likelihood of potential former usage of pesticides
significantly environmentally impairing the subject property, or which would require
remedial actions. However, since the past operational usage is unknown and the
property is planned for residential re-development, additional investigation of potential
pesticides would be prudent. Additionally, the on-site residence and related storage
structures have been on-site since 1945, and persistent termiticides were commonly
applied to such structures and underlying soils prior to the 1980s. It would also be
prudent to evaluate this potential issue.
Based upon the above conclusions and recommendations, PEI provided the Client with a Limited
Soil Sampling proposal dated May 27, 2020, and accepted by the Client on June 18, 2020.
Based on the historic agricultural use of the property, shallow soil sampling for Organochlorine
Pesticides (OCPs), arsenic and total lead (in a targeted area) was completed for the subject
property. The scope of work for the shallow sampling was proposed as follows:
9-Acre Property Soil Sampling
Fontana, CA
Page 2 of 5
The property will be divided into five (5) distinct grid sections (see attached figure). Four (4)
soil sample locations were selected from each grid for a total of 20 locations. PEI will obtain
two soil samples (at approximately 0-6 inches and 24 inches below ground surface [bgs]) via
hand tools (e.g., hand auger) from each of the 20 locations in general accordance with the
2008 DTSC Interim Guidelines for Sampling Agricultural Properties. The soil samples from
each boring will be labeled, and placed in an iced cooler for transportation to a California
certified laboratory under chain-of-custody. The 20 shallow soil samples (e.g., 0-6 inches
bgs) will be composited into 5 samples by personnel at the laboratory. The 5 soil samples
will then be analyzed by the laboratory for Organochlorine Pesticides (OCPs) by EPA
Method 8081A and arsenic by EPA Method 6010 as specific in the 2008 guidelines. The
remaining individual soil samples collected from 24 inches bgs will be held at the laboratory
pending laboratory analysis of the composited samples. Additional sampling beyond the 5
composite soil samples is not included in this scope of work.
In addition to the agricultural pesticide evaluation above, PEI proposes collecting four soil
samples from exposed soil areas adjoining the residential dwelling and outbuildings. The
soil samples from this area will be labeled, transported, and analyzed as described above. In
addition to OCPs, and arsenic, the composite sample from these samples will also be
analyzed for total lead by USEPA Method 6010.
Additional analysis (e.g., deeper samples), if recommended and approved by the Client, will
be completed on a time and materials basis at $150/sample. A letter report of findings will be
prepared.
On June 25 and 26, 2020, PEI visited the subject property to sample shallow soils. The weather
during the site visit was approximately 88-91 degrees with partly cloudy skies.
Based on the proposed sampling methodology referenced above, PEI divided the approximately
9-acre parcel into five approximately equal rectangular sections. The sections were numbered 1
through 5 from west to east. Four discreet soil samples were collected in each sampling area for
a total of 20 discreet sampling locations.
In addition to the five sections above, four soil samples were collected within 1 foot of the
residence, garage, and two sheds located in the southeastern portion of the site. The samples
around the structures were designated as section 6. The sections and sampling locations are
shown in the attached Figure 1.
Two soil samples were collected from each of 24 sample locations using hand-auger equipment.
Initial shallow soil samples were collected from approximately 0 to 6-inches below ground
surface. It was anticipated that deeper soils samples could be collected at depths of 24 inches.
However, due to soil conditions (e.g., gravel and loose soils) present during the assessment, the
deeper samples were collected as noted on the chain-of-custody form varying from 6 inches bgs
to 12 to 18 inches bgs.
Samples were labeled according to the section designation, sample location, and the depth of the
corresponding soil sample:
9-Acre Property Soil Sampling
Fontana, CA
Page 3 of 5
1-1 0”-6” = Soil sample collected in section 1, location 1, at 0 to 6 inches depth (bgs);
4-3 6”-12” = Soil sample collected in section 4, location 3, at 6 to 12 inches depth (bgs).
A total of forty-eight (48) soil samples were collected from the subject property (e.g., two
samples per each of the 24 sampling locations). Soil sample locations are noted on Figure 1.
Soils encountered during the sampling activities at the subject property consisted of light brown,
loose, dry silty sand (SM) with gravel to 3-4 inches. A surficial growth of knee-high grasses,
weeds, shrubs and trees was present onsite, in addition to four greenhouses, a dilapidated shack,
two concrete water tanks, a hose bib, a residence, a garage, and two sheds.
Two soil samples from each soil boring location (6 inches and deeper than 6 inches bgs) were
placed into glass jars and sealed with Teflon-lined lids. The jars were labeled and preserved in
an iced cooler. The soil samples were delivered under chain-of-custody protocol to Enviro-Chem
Laboratories, Inc. in Pomona, California for analysis.
Based on the DTSC guidance referenced above, six shallow soil samples were composited from
24 sample locations (e.g., 1 composite sample from each of the four samples from each of the six
sections). PEI instructed that four 0-6 inch soil samples from each sampling area be composited
at the fixed-base laboratory for laboratory analysis. The deeper soil samples from each boring
were held at the laboratory, pending laboratory analysis results of the 0-6 inch composited soil
samples.
FINDINGS
PEI received the data from Enviro-Chem Laboratories, Inc. on July 6, 2020. The data is
summarized in the discussion below:
The larger sections of land (Sections 1 through 5) contained no concentrations of
environmental concern for the analytes tested. Specifically, arsenic concentrations were
consistent across the site and indicated typical background concentrations equal to or less
than 5.91 mg/Kg, and no organochlorine pesticides (OCPs) were detected above laboratory
detection limits. No further assessment appears warranted related to the vast majority of the
9-acre property.
The composite sample from the soil samples collected from the perimeter of the on-site
buildings at the southeastern corner of the property contained concentrations of lead, DDE
and DDT as discussed below:
4,4-DDE at 0.300 mg/Kg – This concentration is below the lowest January 2019 Tier 1
Environmental Screening Level (ESL) of 0.33 mg/Kg, and significantly below the
published ESL for cancer risk for direct exposure for shallow soil exposure at residential
properties of 1.8 mg/Kg. This concentration is not of environmental concern.
9-Acre Property Soil Sampling
Fontana, CA
Page 4 of 5
4,4-DDT at 0.330 mg/Kg - This concentration is above the lowest January 2019 Tier 1
Environmental Screening Level (ESL) of 0.0011 mg/Kg for significantly vegetated
terrestrial habitats. However, the residential portion of the subject property does not fit this
profile. This concentration is significantly below the published ESL for cancer risk for
direct exposure for shallow soil exposure at residential properties of 1.9 mg/Kg. Therefore,
this concentration is not of environmental concern.
Total Lead at 142 mg/Kg - This concentration is above the lowest January 2019 Tier 1
Environmental Screening Level (ESL) of 32 mg/Kg for minimally terrestrial habitats
(which includes high-density residential). This concentration is also above the published
ESL for cancer risk for direct exposure for shallow soil exposure at residential properties of
89 mg/Kg. The concentration of lead is likely from residual lead-based paint in the soils
near the structures and is not anticipated to be widespread on-site.
CONCLUSIONS
Based on the data, the majority of the property included in the undeveloped and former
greenhouse portions do not contain arsenic or organochlorine pesticide concentrations of
environmental concern.
Composite shallow soil samples adjoining the structures in the residential portion of the
property contain lead in soil at concentrations above its ESL. Elevated lead concentrations are
typically the result of surface exposure to lead-based materials, and typically do not migrate
significantly with depth. PEI recommends additional lead analysis of the “Section 6” soil
samples including: 1) soluble threshold limit concentrations (STLC) analysis of the shallow
composite soil sample; 2) deeper soil samples (e.g., 6 to 12”) to assess the depth of impact, and
3) individual soil samples of shallow Section 6 composite samples to assess whether a specific
location may have a higher concentration of lead.
LIMITATIONS
The Screening Phase II findings are based on the conditions existing at the site when the field
sampling was conducted. This work was performed in accordance with the proposal that was
approved by the Client. This Assessment has been conducted and prepared in accordance with
generally accepted practices and procedures exercised by reputable professionals under similar
circumstances. PEI makes no other warranties or guarantees, either expressed or implied, as to
the findings, opinions, or recommendations contained in this report.
This Screening Phase II was not fully comprehensive in nature but was restricted to areas
discussed herein. The findings presented in this report were based on the subsurface conditions
encountered in the areas investigated during the time frame of this assessment. These findings
may not be considered representative of future conditions in the areas investigated or
conditions in any untested areas of the site. This investigation was performed in accordance
with generally accepted practices of the profession undertaking currently similar studies in the
same geographical area. No other warranty is expressed or implied.
9-Acre Property Soil Sampling
Fontana, CA
Page 5 of 5
It should be recognized that this study was not intended to be a definitive investigation of
potential impact at the subject property. Given that the Scope of Services for this investigation
was limited and that the investigation was further limited by the lack of accessibility in some
areas, it is possible that currently unrecognized impacts (or higher levels than those found) may
exist at the site. Therefore, PEI cannot act as insurers and cannot “certify” that a site is free of
environmental contamination, that impact does not exist below a certain level in other areas of
the site, or that some other, currently unrecognized, environmental impact does not exist at the
site.
The recommendations provided in this report do not constitute legal advice and should not be
relied upon in any way for legal interpretations. This report has been prepared for the sole use
of the Client, affiliates, and assigns of the Client. This report may not be relied upon by any
other party without the written authorization of PEI and the Client. The Scope of Services
performed in the execution of this investigation may not be appropriate to satisfy the needs of
other private users or public agencies, and any re-use of this document or the findings,
conclusions, or recommendations presented herein is at the sole risk of said user. This report is
not necessarily designed to be used for regulatory review or closure purposes, but simply to
facilitate a real estate transaction or review.
CLOSURE
Thank you for the opportunity to be of service. Should you have any questions, please contact
me at the number below.
Respectfully Submitted,
Peter K. Cloven, CEM, EP Kevin M. Clark, P.G. #8573
Project Manager Professional Geologist
FIGURES
NORTH
FIGURE:
Sample Locations
Fontana, CA
1-1
6-2
6-1
6-3
6-4 4-1
1-1
5-3
5-4
5-2
1-2 1-3 1-4
2-1
1-1
2-2 2-3 2-4
3-1
3-2
3-3
3-4
4-4
4-2
4-3
5-1
1-1
1
PHOTO LOGS
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #1:
View of soil sampling location
in APN 0233-122-63-0000,
looking north towards Orchid
Avenue
Photo #2:
View of soil sampling
location in APN 0233-122-
60-0000, looking south
towards residences on
Athol Street
Photo #3:
View of soil sampling
location in APN 0233-
122-63-0000, looking
west towards Poplar
Avenue
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #4:
View of soil sampling
location in APN 0233-122-
63-0000, looking east
Photo #5:
View of abandoned 5-gallon
bucket of hydraulic oil (left
of tree) on APN 0233-122-
60-0000, looking west
Photo #6:
Close up view of abandoned 5-
gallon bucket of hydraulic oil
(next to tree) on APN 0233-122-
60-0000, with no apparent soil
staining.
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #7:
View of soil sampling
location in APN 0233-122-
28-0000, looking west
Photo #8:
View of soil sampling location
in APN 0233-122-28-0000,
looking north
Photo #9:
View of soil sampling
location in APN 0233-122-
28-0000, looking east
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #10:
View of soil sampling
location in APN 0233-122-
28-0000, looking south
Photo #11:
View of soil sampling location
in one of four greenhouses
Photo #12:
View of soil sampling
location in one of four
greenhouses
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #13:
View of soil sampling
location in one of four
greenhouses
Photo #14:
View of soil sampling
location in one of four
greenhouses
Photo #15:
View of soil sampling location
5-1 next to storage shed,
looking west
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #17:
View of soil sampling
location 5-3, looking
east
Photo #18:
Another view of soil
sampling location 5-2
next to concrete fluid
storage tubs (2), looking
northwest
Photo #16:
View of soil sampling
location 5-2 next to
concrete fluid storage
tubs (2), looking north
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #20:
View of soil sampling
location 5-4 (next to water
pipes sticking up to the right
of the hand auger), looking
east towards residence at
9092 Catawba Avenue
Photo #21:
Another view of soil
sampling location 5-4 (next
to water pipes sticking up to
the left of the hand auger),
looking west towards
greenhouses
Photo #19:
Another view of soil
sampling location 5-3,
looking north
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #23:
View of soil sampling
location 6-2 (next to
storage shed), looking east
towards residence at 9092
Catawba Avenue
Photo #24:
View of soil sampling location
6-3 (next to smaller storage
shed and septic tank
[foreground]), looking
southeast towards residence at
9092 Catawba Avenue
Photo #22
View of soil sampling
location 6-1 (next to
garage), looking east
towards residence at
9092 Catawba Avenue
_____________________________________________________________________________________________
Environmental Site Assessment Pinnacle Environmental, Inc.
APNs 0233-122-60-0000, 0233-122-63-0000, 0233-122-28-0000 & 0233-122-29-0000 (9092 Catawba Avenue), Fontana, CA
Photo #26:
View of soil sampling
location 6-4 (east side of
residence in garden area),
looking northwest at 9092
Catawba Avenue
Photo #27:
Another view of soil
sampling location 6-3 (next
to smaller storage shed corner
and septic tank [foreground]),
looking southeast towards
residence at 9092 Catawba
Avenue
Photo #25
Another view of soil
sampling location 5-4 (next
to water pipes sticking up to
the left of the sampling stake
[painted white at top]),
looking west towards
greenhouses
ANALYTICAL REPORT & CHAIN OF CUSTODY