HomeMy WebLinkAboutCT 99-06; Palomar Forum; Tentative Map (CT) (16)UPPER MOTORCYCLE
PIT AREA
LOWER MOTORCYCLE PIT
ABOVE GftOUND
GASOLINE TANK
Concrete
Equipment
Supply Area
SCALE: 1" - 400'
(Approximate)
SKATEBOARD
PARK
Hewy Equipment Storage Yard
LEGEND
TP-1
ASSUMED PROPER ~Y BOUNDARY
EXISTING DRAG
EXPLORATORY BAQ.XHOE TRENCH
MONITORING WELL ^O
VICINITY MAP
Thomas Bros, pg.20
NOTE: This Plot Plan Is not to be used for legal
purposes. Locations and dimensions are approxi-
mate. Actual property dfmensfons ond locations
of utltRJes may be obtained from the Approved
Bunding Plans or the AB-BuWJ* Grading Plans.NOVEMBER 1990
KEF&&NC&7WS PLOT PLAN WAS PREPARED
FROM AN EXISTING G€OTECHNICAL IMP 0T
SAN DIEGO GEOTECHNICAL CONSLULTANTS,
INC. DATED NOVEMBER 1985 AND FROM
OH-STTE FIELD RECONNA1SSWC£ PEFOKUED
BY GEL
PLOT PLAN
CARLSBAD RACEWAY PROPERTY
NORTH OF PALOMAR AIRPORT ROAD
CARLSBAD, CA.
FIGURE NUMBER II
JOB NUMBER 88-5291
(ID
I
I
I
I
I
I
I
Appendix "B"
I Geotechnical Exploration, Inc.
Report of Hazardous Materials Site Assessement - Phase II
| Report Dated January 7, 1991
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I REPORT OF HAZARDOUS MATERIALS
SITE ASSESSMENT - PHASE II
• Carlsbad Raceway Property ^
_ 6600 Palomar Airport Road
• Carlsbad, California
I
I
I
I
JOB NO. 88-5291
07 January 1991
Prepared for:
Ms. Nancy Hane
GEORGE WIMPEY, INC.
I
I
I
I /
I
I
TABLE OF CONTENTS
•
1
1
1
1
1
1
1
1l^H
1
1
1
1
1
1
1
1
1
1
1. SITE DESCRIPTION
II. HISTORY OF SITE AND VICINITY
III. LOCAL HYDROGEOLOGY
IV. VISUAL INSPECTION
V. COUNTY AND STATE RECORDS REVIEW
VI. CONCLUSIONS AND RECOMMENDATIONS
VII. LIMITATIONS
FIGURES
1. Area Map
II. Plot Plan
III. Test Pit Logs
IV. As-Built Schematic Diagram, MW-1
V. Boring Log, MW-1
APPENDICES
A. Original Laboratory Reports and Chain-of-Custody
/
PAGE
1
5
7
9
in
16
18
forms
flD
U
1
•
1
1
1
1
1
1
•
1
1
1
•
1
1
1
1
1
1
/IIP" ^1^ ^ GEOTECHNICAL EXPLORATION, INC.( i — nz . —V 1 ^V 1 7 I SOIL & FOUNDATION ENGINEERING • GROUNDWATER
^ U \*S N L / U LJ HAZARDOUS MATERIALS MANAGEMENT • ENGINEERING GEOLOGY
07 January 1991
Ms. Nancy Hane Job No. 88-5291
GEORGE WIMPEY, INC.
3565 7th Avenue
San Diego, CA 92103-0580
Subject: Report of Hazardous Materials Site Assessment, Phase II
Carlsbad Raceway Property
6600 Palomar Airport Road
Carlsbad, California
Dear Ms. Hane:
In accordance with your request, we have performed a Phase II site
assessment for the subject site. The purpose of the investigation was
to test soil and ground-water samples for the presence of hazardous
materials in accordance with the recommendations stated in our Phase I
report, "Report of Hazardous Materials Site Assessment — Phase I",
dated November 28, 1990. This testing, in conjunction with the
information presented in our Phase I report, was intended to identify
the type, and define the extent, of any contamination found on the
site. This information could then be used to develop appropriate
remedial measures, if needed, to help bring the site into compliance
with current regulations and help limit potential future liability for the
site. This report presents the findings and recommendations of our
investigation.
Please note that the Phase II investigation was performed concurrently
with the Phase I investigation. While the dates listed in this report for
the performance of the Phase II field work actually predate the issuance
of our Phase I report, the scope of Phase II was based on the findings
of the Phase investigation.
l
7420 TRADE STREET • SAN DIEGO, CALIFORNIA 92121 • (619) 549-7222 • FAX: (619) 549-1604
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 2
I. SITE DESCRIPTION
The subject site consists of approximately 156 acres of gently rolling to
moderately steep hillsides and drainage channels just north of Palomar
Airport Road in the City of Carlsbad, California as shown in Figure No.
I. This site is occupied almost entirely by the Carlsbad Raceway,
which serves as a venue for a variety of motor vehicle racing events.
For a more detailed description of the site and it's history, please refer
to our previously referenced Phase I report.
II. SCOPE OF WORK
Our Phase I report recommended testing of soils for various petroleum
hydrocarbon contaminants in four separate areas within the site. These
four areas include:
1. The unpaved lower motorcycle pit area.
2. The unpaved upper motorcycle pit area.
3. The unpaved entry road.
4. The area around the above-ground gasoline storage tank under
the northern property line.
Soil samples were collected at various depths from a backhoe trench
placed in each of these four areas. Figure No. II indentifies the four
areas and shows their associated trenches. Excavation logs for each
trench were made by our staff geologist and are included as Figure
Nos. Ilia through Mid.
Tests performed on the soil samples included:
1. The California Department of Health Services (DHS) recommended
method for Total Petroleum Hydrocarbons (TPH).
ODID
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 3
2. EPA method 418.1 for total recoverable petroleum hydrocarbons
(TRPH).
As explained in our Phase 1 report, the dirt entry road was oiled
during the 1960's to help prevent the creation of dust. Since the
source of this oil was unknown we also tested a sample from TP-1 for
PCB content using EPA method 8080.
Based on the findings of our Phase I investigation we also installed a
monitoring well, MW-1, in the lower motorcycle pit area as shown in
Figure No. II. We collected two soil samples at this location while
installing the well and then collected ground-water samples after
installation. The soil samples were tested for TPH and TRPH usng the
above-referenced methods. The ground water was tested using:
1. EPA method 418.1 for TRPH.
2. DHS recommended method for TPH.
3. EPA method 8020 for benzene, toluene, ethylbenzene and total
xylenes (BTEX).
4. EPA method 8080 for organochlorine pesticides and PCB's.
5. EPA method 8140 for organophosphorus pesticides.
The scope of work for our Phase I! investigation consisted of collecting
the samples and performing the tests listed above, analysis of the test
results and preparation of this report.
II. FIELD INVESTIGATION
A. Exploratory Trenches
On July 17, 1990, four exploratory trenches were excavated on the
subject site. These trenches are shown in Figure No. II as TP-1i
through TP-4. Our observations for each trench are discussed
jndividually below.
flD
ID
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 4
1. TP-1: This trench was placed in the dirt entry road near its
western end (see photograph #1) and extended to a depth of 8
feet. As indicated by our excavation log. Figure No. Ilia, and
photographs #2 and #3, the soils in this area were found to
consist of white to tan sandstone interbedded with thin,
irregular, grayish to red-brown clay layers. These soils were
topped with 2 to 4 inches of silty-sandy road base/fill materials.
The past application of oil for dust control was clearly indicated
by a distinct 1/8- to 1/4-inch-thick layer of darkly stained soil
approximately 4 inches below the ground surface. Other than
this thin, near-surface layer of stained soil we did not observe
conspicuous evidence suggestive of possible contamination.
Samples were collected from depths of 9 inches, 4 feet and 8 feet
respectively. An additional sample of the stained layer was also
collected. These samples, as well as all others collected from the
three trenches discussed below, were collected by scraping the
trench wall with various hand tools and collecting the scrapings
in a clean glass jar. This jar was packed as tightly as possible
and then capped and labelled. The sealed jars were kept on ice
until delivery to a state-certified laboratory. The results of the
tests are discussed later in Section 111 of this report.
^* TP-2: TP-2 was located near the center of the upper motorcycle
pit area (see photograph #4). This trench was terminated at a
depth of approximately 5 feet due to refusal on hard rock. As
can be seen in photographs #5 and #6, the soils in this trench
were quite similar to those at TP-1 except for the presence of a
layer containing significant percentages of mollusk shells and dark
organic material at a depth of approximately 1 foot. See Figure
No. 1Mb for a more detailed description of the soils encountered
' at TP-2.
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 5
We collected samples at depths of 1 and 5 feet in this trench. We
did not observe conspicuous evidence of hazardous materials in
this trench.
3. T_P-3; As seen in photograph #7, TP-3 was placed in the lower
motorcyle pit area. It was noted in our Phase I report that this
area had been inundated in the past by a small man-made lake.
Some of the soils exposed in this trench were indicative of this
former lake as evidenced by much higher percentages of clay and
organic matter which can be seen in photographs #8 and #9. See
Figure No. I lie for a complete description of the soils observed in
this trench.
While we did find some rather dark soils in this trench we believe
these dark colorations are due to the presence of naturally
ocurring organic matter. Based on our observations we did not
anticipate detection of significant levels of hydrocarbon compounds
in the laboratory tests performed on soil samples collected in TP-
3. Samples were taken from depths of 1, 2 and 3 feet in this
trench.
4. TP-4: As shown in photograph #10, TP-H was placed adjacent to
an above-ground fuel tank. The soils exposed in this trench
were quite similar to those described for TP-1. Refer to Figure
No. Hid for a complete description of these soils. TP-U was
extended to a maximum depth of approximately 6 feet.
In general, the soils in this trench had a clean, unstained
appearance indicating that contamination was unlikely. We
collected three soil samples from this trench at depths of 1, 2 and
6 feet as shown in photograph #11.
flD
ID
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 6
B. Monitoring Well
On July 21, 1990 a monitoring well was installed on the subject site.
This well, MW-1, was placed in the lower motorcycle pit area as shown
in Figure No. II. This location was chosen because it is very near to a
stream channel through which water orginating off-site flows across the
subject site and because this location was once within the man-made
lake noted previously. As such, the ground water at this location may
be most likely to indicate the presence of contamination from both on
and off-site sources. Please refer to our Phase I report for a further
discussion of the factors considered in the placement of MW-1.
MW-1 was installed in a 6-inch-diameter boring extended to a depth of
approximately 15 feet." Two-inch-diameter PVC casing was then placed
inside the boring. The annular space between the casing and the wall
of the boring was filled with a clean, graded gravel pack to a depth of
4 feet below ground surface. Three feet of bentonite was placed above
the gravel pack and then hydrated to form an impermeable seal.
Finally, a water tight plug was installed at the top of the casing and-a
locking steel protective cover cemented into place over the casing. A
schematic diagram of the as-built construction of MW-1 is presented as
Figure No. IV, while photographs #12 through #15 show various stages
in the construction of the well. This well was constructed under permit
number W91592 issued by the County of San Diego and in general
conformance with applicable regulations.
While advancing the boring used to construct MW-1, soil samples were
collected at depths of 5 and 10 feet. We were unable to collect a
sample at 15 feet due to the presence of hard rock. The samples were
collected using a standard 3-inch O.D. split-spoon sampler lined with
brass tubes. Upon removing the drive tube from the boring, the
bottom-most brass liner was removed and the ends sealed with teflon
flD
ID
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 7
patches and plastic caps. The plastic caps were then taped in place.
Finally, a label was affixed to the brass tube which was then placed in
an ice-filled, insulated chest until being delivered to a certified
laboratory for testing. Tests for petroleum hydrocarbons were
performed using EPA method 118.1 and the DHS recommended method
for TPH. The results of these tests will be discussed in Section III.
The soils encountered during the placement of this boring were logged
in the field by our staff geologist. His observations are presented as a
boring log in Figure No. V. as might be expected, this boring log
generally correlates with the excavation log for trench TP-3 (i.e..
Figure No. Illc).
In order to remove sand and silt prior to sampling the ground water,
MW-1 was developed on August 2, 1990. Development consisted of: (1)
"surging" the well by rapidly raising and lowering a teflon bailer within
the well casing, and (2) pumping the well with an air-driven diaphragm
pump. The water removed during this process was stored on-site in a
55-gallon steel drum.
The wells were then allowed to recharge until being sampled on
September 9, 1990. The sampling process consisted of:
1. Measuring the static water level.
2. Removing four casing volumes of water using a teflon bailer.
3. Measuring the temperature, pH and specific conductance of the
ground water.
4. Removing 1 additional casing volume of water.
5. Remeasure temperature, pH and specific conductance.
6. Repeat steps 4 and 5 until successive measurements of
temperature, pH, etc. vary no more than 10%.
7. Remeasure water level.)
8., Allow MW-1 to recharge to 80% of original water level.
/
9. Collect sample using a teflon bailer.
dDDO
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway
Carlsbad, California
Job No. 88-5291
Page 8
The samples were placed in clean, labelled containers appropriate for
the required analyses as provided by Analytical Technologies, Inc.
(ATI), a state-certified test laboratory. The samples were kept in an
ice-filled insulated chest until being delivered to ATI. Laboratory
analyses performed on the ground-water samples included, EPA Methods
418.1, 8015 (DHS modified), 8020, 8080 and 8140. The results of these
analyses are discussed in the following section.
III. LABORATORY TEST RESULTS
The results of tests performed on soil and ground-water samples
collected on the subject site are discussed separately below. The
original laboratory reports and chain-of-custody forms are included
herein as Appendix A.
A. Soil Samples
The results of the laboratory testing performed on the soil samples
collected in trenches TP-1 through TP-4 and monitoring well MW-1 are
shown below in Table I.
TABLE I
Total PCBs
Sample
I.D.
ER1
TP-1.1
TP-1. 4
TP-1. 8
TP-2.1
TP-2.5
TP-3.1
TP-3.2
TP-3.3
TP-4.1
TP74.2
TP-4. 6
MW-1. 5
-MW-1.10
Depth
(feet)
.0.25
0.80
4.0
8.0
1.0
5.0
1.0
2.0
3.0
1.0
2.0
6.0
5.0
10.0
TPH (DHS
method)
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
<10.0
TRPH (EPA
method 418.1)
6,200
20.5
<10.0
<10.0
<10.0
38 .'4
17.1
10.7
<10.0
<10.0
<10.0
23.9
13.9
<10.0
(EPA method
8080)
<0.05
-
NOTE: All units are in mg/kg (i.e.
the limit of detection shown.
ppm). "<" indicates less than
OD]0
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 9
As Table I shows, the DHS method for TPH (which detects gasoline and
diesel fuels) and EPA method 8080 (which detects PCBs), failed to
measure detectable levels of these contaminants. We therefore conclude
that these contaminants should not represent a problem for the site.
The only test able to detect any contamination in these soil samples was
EPA method 418.1. This test measures a sample's content of "heavy"
hydrocarbons such as oil, hydraulic fluid, etc. The "action level" or
clean-up level, for these types of compounds is 100 mg/kg.
Furthermore, 20 mg/kg is commonly considered typical of naturally
occurring background levels. Other than sample ER1, which consisted
of the soils from the thin, oil-stained layer found along the dirt entry
road, all samples were well below the action limit. Sample EPJ, on the
other hand, is well above the state-mandated action level which implies
that technically this thin layer of oil soaked soil may require some type
of treatment or disposal. It is important to note that this layer appears
to be quite thin (1/8- to 1/4-inch), and that laboratory tests on a
sample collected less than 10 inches below this layer detected levels just
above background. This seems to indicate that these oily compounds
are rather tightly bound within the soil.
This empirical evidence suggests that the contamination is essentially
non-mobile in the subsurface may create an option for essentially
ignoring this thin layer of contamination. There are several reasons
why local regulators, who sometimes exercise some leeway in enforcing
the action level, might decide this oily layer does not require remedial
action. Some of these reasons are:
1. As noted above, empirical evidence suggests the contamination is?
tightly bound to the soil and not migrating in the subsurface.
2. The contamination appears to be very thin and removal of the
contaminated layer using typical earth working machinery wouldi
result in the mixing in of large quantities of clean soil and
/ probably dilute the contamination to levels below the action limit.
flD
ID
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 10
3. To remove the contamination with simple manual labor in order to
minimize the mixing of clean soils would, in our opinion, be
unreasonably expensive.
4. In developing this property, the process of grading the site will
almost undoubtedly result in the contaminated layer being mixed
with clean soils to the extent that the contamination would
probably no longer be detectable.
Considerations for dealing with this thin layer of contaminated material
will be presented in 'Section IV.
B. Ground-Water Samples
The results of the analyses performed on the ground-water samples
collected from MW-1 indicate that organophosphorus and organochlorine
pesticides, fuel hydrocarbons (i.e., gasoline, diesel, etc.), PCBs,
benzene, toluene, ethylbenzene and xylenes are not present in
detectable amounts. (Please refer to Analytical Technologies, Inc.is
report in Appendix A for a detailed list of these chemicals and their
corresponding detection limits.) Contamination of the ground water
underlying the site with the above-referenced contaminants therefore
seems unlikely.
The test for heavy hydrocarbons (EPA method 418.1) did, however,
yield a detectable result. More specifically, the TRPH concentration
was found to be 0.12 mg/l (i.e., 0.12 ppm). It should be noted that
there is no established action level for TRPH in ground water.
Typically, the TRPH analysis is used for initial screening with a
positive test leading to further testing, primarily for benzene, toluene,
ethylbenzene, xylenes (BTEX) and PCB's. Since none of these
OD
]Q
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 11
compounds or any of the others mentioned above were detected, it is
our opinion that the ground water in the vicinity of MW-1, and
probably throughout the subject site, does not represent a threat to
human health or the environment and does not require remedial action.
NOTE: Based on the above-referenced ground-water test results, the
drum which was used to contain ground water purged from MW-1 during
development and sampling was emptied on-site near the well. The
empty drum was subsequently removed from the site.
IV. CONCLUSIONS AND RECOMMENDATIONS
In our Phase I investigation, we identified four areas where
contamination was considered most likely. We also noted that assorted
petroleum hydrocarbon compounds would be the type of contamination
that might be found in these areas. Subsequent observation and
testing of subsurface soils in these four areas seem to indicate that
three of them are essentially "clean" and do not warrant further
investigation. However, one of these areas, the dirt entry road, was
found to have a thin layer of soil contaminated with oil. The evidence
presented in this report suggests that this contamination is fairly
immobile in the subsurface and therefore probably does not represent a
significant threat to contaminate the underlying ground water. We
further believe that this contamination should not present a threat to
human health or the environment under current conditions, during
development or foreseeable post-development conditions. Additionally,
the fact that the contaminated soils appear to be confined to a very
thin layer several inches below the existing ground surface, in our
opinion, makes it technically and economically unfeasable to remove
these contaminated soils. Finally, development of the site will probably
involve extensive earthwork which will serve to mix the contaminated
soils with relatively large volumes of clean soil, thereby diluting the
flD
ID
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 12
contamination to concentrations below the applicable action level. Based
on this, we feel that potential liability for this contamination should be
low. We therefore suggest that this contamination can be left as is and
essentially disregarded with respect to future devlopment. It is worth
remembering, however, that our observations were limited to one
backhoe trench over the entire length of the dirt entry road.
Conditions may be different below other parts of the road, although we
have not observed evidence to suggest that such might be the case. It
is our opinion that further exploration and/or testing below other parts
of the dirt entry road is not warranted at this time. However, we do
recommend that grading performed over the length of the entry road
during development be observed by personnel experienced in hazardous
materials investigations so that the very limited vertical extent of the
contamination can be documented for the entire length of the road.
Another option would be to present this report and our Phase I report
to the County of San Diego's Hazardous Materials Management Division
(HMMD) for review. HMMD is the local agency responsible for
enforcement of hazardous waste-related laws and is available to review
and comment on reports such as this. While we cannot be sure of
HMMD's response to our conclusions and recommendations, our
experience indicates that our suggestions might indeed receive HMMD's
support. We should also note that it is our understanding that the
c/ient is not required to present these reports to HMMD, nor is the
client required to notify HMMD of the contamination found along the
entry road at TP-1.
Tests performed on ground-water samples collected from MW-1 failed to
,--
detect a host of potential contaminants which could have originated
either on-site or off-site at any of the several farms upstream from the
site. While one test did indicate a fairly low concentration of some type
of hydrocarbon contamination, there is no action level based on this
particular test. Because of this lack of an established regulatory limit
/
,a'hd the fact that no specific compounds could be identified in the other
tests, we feel the ground water in the vicinity of MW-1 requires no
CD
10
1
I
I
I
B FinaMy, we should note that, as mentioned in our Phase I report, there
are two areas near the eastern end of the subject site which were not
made a part of our Phase II investigation and which may include
limited, localized patches of soil contaminated with petroleum
hydrocarbon products. These areas are shown in Figure No. II as:
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 13
further testing or remedial action. Based on the general hydrogeologic
characteristics of the entire site and surrounding areas, we believe this
conclusion (i.e., no additional work needed) can reasonably be
extended throughout the subject site.
1. Heavy Equipment Storage Yard
2. Concrete Equipment Supply Area
Since various containers of petroleum products are presently stored in
these two areas, we suggest that further observation and testing of
these areas be performed after these containers have been removed.
As such, our comments as presented in this report are not intended to
include the two areas listed above.
V. LIMITATIONS
Our conclusions and recommendations have been based on all available
data obtained during our investigation, as well as our experience with
the hydrogeologic conditions, soils and formational materials located in
this portion of the City of Carlsbad in the County of San Diego. Of
necessity, we must assume a certain degree of continuity between
exploratory excavations and/or natural exposures.
„- • -
The work performed and recommendations presented herein are the
result of an investigation and analysis which meet the contemporary
standards of care in our profession within the County of San Diego.
No other warranty is offered or implied.
I
I
6
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 2
I. SITE DESCRIPTION
The subject site consists of approximately 156 acres of gently rolling to
moderately steep hillsides and drainage channels just north of Paiomar
Airport Road in the City of Carlsbad, California as shown in Figure No.
I. This site is occupied almost entirely by the Carlsbad Raceway, /
which serves as aVVvenue for a variety of motor vehicle racing events. V
For a more detailed description of the site and it's history, please refer
to our previously referenced Phase ! report.
II. SCOPE OF WORK
Our Phase. 1 report recommended testing of soils for various petroleum
hydrocarbon contaminants in four separate areas within the site. These
I four areas include:
11. The unpaved lower motorcycle pit area.
2. The unpaved upper motorcycle pit area.
_3. The unpaved entry road.
y. The area around the above-ground gasoline storage tank under
the northern property line.
I
Soil samples were collected at various depths from a backhoe trench
•aced in each of these four areas. Figure No. II indentifies the four
areas and shows their associated trenches. Excavation logs for each
'•nch were made by our staff geologist and are included as Figure
I*. Ilia through Hid.
:Ws performed on the soil samples included:
The California Department of Health Services (DHS) recommended
method for Total Petroleum Hydrocarbons (TPH).
I
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Carlsbad Raceway Job No. 88-5291
Carlsbad, California Page 14
This report should be considered valid for a period of one (1) year,
and is subject to review by our firm following that time.
This opportunity to be of service has been sincerely appreciated. If
you should have any questions regarding this report, please contact us
at our office. Reference to our Job No. 88-5291 will help to expedite a
reply to your inquiries.
Respectfully submitted,
GEOTECHNICAL EXPLORATION, INC.
/r/ / / rf/jM.tKt&tf J^&fzifo,
Robert A. Stettler, Senior Staff Geologist
'"^ j /- *O S?( - -T^S &. & />^_-«r ^i/
Lesife D. Reed, Vice Presidenr-
C.E.G. 999/R.E.A. 01607
RAS/LDR/Ib
}
/
OD
10'
33°07'30
117-15'
Mapped, edited, and published by the Geological Survey
Control1 by USGS, USC&GS, and USCE
/ CARLSBAD RACEWAY
/ PALOMAR AIRPORT ROAD
CARLSBAD, CA.
I
'POGRAPHIC MAP (1968)
FIGURE NUMBER I
JOB NUMBER 88-5291
UTM GRID AND 1968 MAGNETIC NORTH
DECLINATION AT CENTER OF SHEET ]0
1 tb 1 PI 1 LOU
1 TEST PIT * TP-l J0e iWf CARLSBAD RACEWAY
LOGGED BY R- STETTLER inni-ir* eeoo paiomar Almost Rd.
I DATE 7/17/90 Carlsbad, California
™°!L™_
1
1
1
1 1
25 4IJT
• &g
6
1
1
LvXijK^j'!^
[•!<!!'
n lT*<Yiji
:{ 1 <!'T-jip
^^>x^>^^>
1XL41
1 ' ! * i }
^!t '']
H i tl
SS'IWK]i;j}|;
i t -r 4 i/tit
\ \ Ml
Ihi'r-i t \-\ • i'i1 f i r
M ItjW
^\^
^I'J^kMt]
I1'!1!-!1!i i 'Mr,1! f v *1 M f [ J jferftfifVfu- -1 . "i^i ti'i" --r ---r-fn
x^x^X^x^x;1,1, (ii.toffffftl
'iXiK'S^
''ill'l!,i i i M ip[WS
* i i ^
^X^x^x^i^^x;
lj ff'!'^jTTrtj'lVi''TuPi
^WiSMlSI ®
i,^j'''v'-jl*ulj {>!!•}*
J llUj j @
II^NJIA
( f •"{' • j' •! \
'^^'^t^CJi CLAY STRINGERS•' V'i'j//
ITfTw7;: /
ifvTjt ni •
1 2 3 4 5- LENGTH IN FEET
1
I DEPTH tu "i• ii £ s___, 5 is)FEET 5? •
I 0
0-0.4
|™ 0.4
1
0.4-
1 bottom
Of
trench_ ;
1
DESCRIPTION
(T) Silty, clayey SAND, red-brovn to
orange, fine to very fine grained.
FILL/ROAD BASE
(2) Silty, clayey SAND, dark brown to
black, stained, oily appearance.
CONTAMINATED FILL/ROAD BASE
(§) Silty SAND, vhite to tan, fine to
very fine grained, common red-brovn
to gray clay stringers, up to 2-inche?
thick (see figure).
SANTIAGO FORMATION
- FIGURE NUMBER ma
• JOB NUMBER 88-5291
I
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1 t b I II
LU
TEST PIT I TP-2
LOGGED BY R. STETTLER
DATE 7/17/90
JOB NAME CARLSBAD RACEWAY
I PC-ATIf*< 6600 Palomar Airport Rd.
Carlsbad, California
DIMENSION AMD
TYPE OF EXCAVATION 5' x 5' x 24" backhoe trench
LENGTH IN FEET
DEPTH
IN
FEET
0-0.5
0.5-
1-4
1.4-
bottom
of
trench
i
Ul
\
)
J
«J
a
DESCRIPTION
(D Silty, sandy CLAY, medium brovn.
moderately dense, with some debris.
FILL
(2) Sandy, silty CLAY, oranae, soft.
friable, crumbly.
ALLDVIDM/TOPSOIL
(3) Sandy, silty CLAY grading to clayey
SAND, light gray, fine to very fine
grained, common red-brown to orange
clay stringers, traces of mollusk
shells vith black organic material
along top of layer.
SANTIAGO FORMATION -t
FIGURE NUMBER
JOB NUMBER 88-5291
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
TEST PIT LOG
TEST PIT I
LOGGED BY
DATE
TP-3
R. STETTLER
7/17/90
JOB HUME. _CARLSBAD RACEWAY
6600 Palomar Airport Rd.
Carlsbad, California
DIMENSION AND
TYPE OF EXCAVATION 61 x 51 x 24" backhoe trench
1.5
B 3
a.
GRAVEL
<6TH IN FEET
DtJ>TH
FEET
0-.75
.75-
1.5
1.5-
3.1
/'
-3 .-I-/
UJi 2
•a
DESCRIPTION
(D Silty SAND, fine to very fine drained.
light to medium brown , medium dense.
with some clay.
FILL/D.G.
@ CLAY, dark brown to black, some red-
brown, moist, dense, sticky, gummy.
LAKE DEPOSIT?
(D Sandy CLAY grading to clayey SAND,
dark brown to black, soft, friable.
with some organic debris, % to 1-inch
thick layer of coarse gravel at base.
LAKE DEPOSIT WITH ALLUVIUM
@ DECOMPOSED GRANITE, aray to red-brown.
jgjg
«2>-> C
3-
i B
Mli
it:K M
s s
E
"§
>
bottom
of trench
friable to moderately hard.
FIGURE NUMBER Illc
JOB NUMBER 88-5291
1 TEbT Pll LU
TEST PIT I
LOGGED BY
DATE
TP-4
R. STETTLER
7/17/90
JOB NAME CARLSBAD RACEWAY
LOCATION 66°0 Palomar,Airport Rd .
Carlsbad, California
DIMENSION AND
TYPE OF EXCAVATION 61 x 51 x 18-!
2 3
LENGTH IN INCHES
0-0.3
0.3-
2.5
2.5-
bottom
of
trench
/
Ul$
()
•V)•o•to
33
DESCRIPTION
(T) CLAY, dark brown, dense, blocky, dry.
TOPSOIL
(2) Slightly clayey, silty SAND, red-
brown, damp, soft, friable.
SANTIAGO FORMATION
(3) Similar to above but becoming white
to tan in color.
SANTIAGO FORMATION
1 M
5!IH-PLACEDEWSITTOPTIMUMMOISTUREXilSJOOWMIXVH5
*>4
***£
FIGURE NUMBER IIId
JOB NUMBER 88-5291
SCHEMATIC DAGRAM
OF MONITORING WELL MW-1
LOCKING PROTECTIVE
COVER
WATER-TIGHT
PLUG
DEPTH (FT.)
GROUND
SURFACE
SOLID
CASING
GROUNDWATER
SURFACE
SLOTTED PVC
CASING
BOTTOM OF
BORING
•o
CEMENT -
(4 Sacks, High Strength)OOC V * *J ^ ** r\«J | I *
1^ — BENTONITE
J$CN /A 1 /(Approx. 3/4 Sack, Chips)
i
*
No.3 SAND
(2 Sacks)
_ 6.2
ORIGINAL BORING WALL
NOTE: Casing is 2"
diameter schedule
40 pvc. slot size
of screen is 0.020",
NOT TO SCALE
CARLSBAD RACEWAY
6600 PALOMAR AIRPORT ROAD
CARLSBAD, CA.
JOB NUMBER 88-5291
15 FIGURE IV
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
EXCAVATION LOG
EQUIPMENT
CME 55
SURFACE ELEVATION
440' above MSL (approx.)
DIMENSION & TYPE OF EXCAVATION
6" hollow-stem auger
GROUNDWATER DEPTH
6.2' below sureface (approx.
DATE LOGGED
7/24/90
LOGGED BY .
R. STETTLER
I—
1—
Q-
LUO
5-
_
1.0-
_
-
15
-
—SYMBOLy
1 1H
LU
Q-
r^t'fL
FIELD DESCRIPTION AND CLASSIFICATION
DESCRIPTION AND REMARKS
(consistency, moisture, color, grain size)
Silty, clayey, fine grained SAND,
light brown, damp, medium dense-
friable.
FILL/ALLUVIUM
Silty SAND, dark brown, clay
JHJM binder, moist, soft.
|Vj ]\ ALLUVIUM WITH LAKE DEPOSITSIf t X•H
nil Silty SAND, fine to medium
i LJ grained v/ith some clay, medium
f | BH brown, moist to saturated.
i I
llJ
DECOMPOSED GRANITE
Boring terminated i> 15'.
j.S.C.S
oz:
o -—•
UJ O_
C£ 0.
O
•z.a.Q.
3:
UJ1—BENZENE ( PPM 1s:Q-Q-
U
Lu
c
a.o.
LU2:
Lt.
X
OTHER
Gravel
sized D.G
in drive
sample
from 5' .
Drive tube
refusal H>
1 0 ' 1 1 " .
No drive
samples
below 1 1 '
due to
hard rock
refusal .BLOWCOUNTS/ft.33
80+
0o
a:
LUia.
i/>
3"
3"
V / wAj£R TABLE
^ LOOSE BAG SAMPLE
H DRIVE SAMPLE
^ CONTINUOUS CORE SAMPLE
JOB NAME CARLSBAD RACEWAY
SITE LOCATION
6600 Palomar Airport Rd . , Carslbad, CA
JOB NO.
88-5291
FIGURE NO. y
REVIEWED BY LOG NO.
MW- 1
I
I
I
I
I
I
I
I
TP-1. The dark vertical streaks
were made by the backhoe bucket.TP-1. Note the orange to rec
brown clay stringers.
#5 TP-2. Flag shows location of
\_mollusk shells/organic matter just below
TP-2. Note the clay stringers as
I
I
I
1Iti_i
OL-
I
I
I
I
I
r .. --—:: >--- - -------- :.-=-=-. -•--•---. --.- .__.-/-..- -- --
TP-3 after backfilling. Trech was
placed adjacent to truck.
, ' • -' I ;'-r\ r -.9
TP-3. Note light colored fin
darker lake depositsf?)#9 TP-3. Lowest flag shows gravelly ;T
layer at bottom of lake deposits. ~~'jr
#10 TP-4. Note fuel tank at right.
#12 Drilling MW-1.
* #11 TP-,4. Flags show where samples
were collected for testing •- : . ....
#13 MW-1, showing location at western
' end of lower motorcycle pit area.
#14 Placing gravel pack in annular
space of MW-1.
#15 MW-1 showing water-tight plug and
protective cover in place.
-"">.;••-.-:";v" •:••"::'-' -
'""^- • ^' > * ""•
•:- K :~:"": : :-'-: .
#1 Exploratory trench TP-1.
TP-1. The dark vertical streaks
were made by the backhoe bucket.
-=,..-:-. ,-,_ _ -
TP-2 after trench was backfilled
Trench was placed next to truck
•, #5 TP-2. ,Flag shows location of
.fmoliusk shells/organic matter just helJ|J.llnnpr i-isir>' i-,— .-
ft-~~ #6 TP-2. Note the clay stringers as
I
I
I
I
I
I
I
I
I
I
#7 TP-3 after backfilling. Trech was
placed adjacent fro truck.
.-r"^-^ 4 ' i -- * J*>
,.
Note light colored fill over ^#9 TP-3. Lowest flag shows gravelly ??,
layer at bottom of lake deposits.
#10 TP-4. Note fuel tank at riqht
_#12 Drilling MW-1 .
j #11 TP-4.7 Flags show where samples
were collected for testing.
;:--?,;-•.-:.:<*'•:- :S5;-'>= --/:
:::^
I
I
I
I
I
I
I
I
#13 MW-1; showing location at western
~ end of lower motorcycle pit area.
?_-•'-! S A "i 4; E ^ * -.3- y. % I ?
=Ss: -
._;• 1 a
: ;"^f; •M_Ji;. |; ;
#14 Placing gravel pack in annular
space of MW-1.
#15 MW-1 showing water-tight plug and
protective cover in place.
APPENDIX A
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
QUALITY ASSURANCE LABORATORY
6555 NANCY RIDGE DR., SUITE 3C«.
SAN DIEGO, CALIFORNIA 92121
(.'£19.') 566-1060
GEOTECHNICAL EXPLORATION, INC
ATTN: ROBERT A. STETTLER
7420 TRADE STREET
SAN DIEGO, CA 92121
DATE OF REPORT JULY 26, 1990
DATE RECEIVED JULY 17, 1990
DATE OP SAMPLE . JULY .17, 1990
DATE COMPLETED ' JULY 25, 1990
ANALYZED BY VJ MC EA
SAMPLE TYPE 12 SOIL
PROJECT NAME CARLSBAD RACEWAY
PROJECT NUMBER #5231
QUALITY ASSURANCE.
LABORATORY
1
JULY 26, 1990
I GEOTECHNICAL EXPLORATION, INC
™ ANALYSES RESULTS
SAMPLE TYPE - SOIL
1
1 ANALYS
1 METHOD
LOG NUMBER SAMPLE ID UNITS:
10685-90 T-P1.1
• 10686-90 TP1.4
• 10687-90 TP1.S
10688-90 ER1
1 10689-90 TP2. 1
10690-90 TP2.5
10691-90 TP3. 1
1 10692-90 TP3.2
10693-90 TF'3.3
10694-90 TP4. 1
10695-90 TP4.2110696-90 TP4.6
CCCV
SPIKE RECOVERY
• DUPLICATE RPD
_
IS: TPH TRPH TOTAL PCB
: DHS* EPA 418.1 EPA 8080
MG/KG MG/KG MG/KG
< 10. 0 20. 5
< 1 0 . 0 < 1 0 . 0
< 1 0 . 0 < 1 0 . 0
6, 200 <0. 05
< 1 0 . 0 < 1 0 . 0
< 1 0 . 0 38 . 4
< 10.0 17.1
< 1 0 . 0 10.7
< 1 0 . 0 < 1 0 . 0
< 1 0 . 0 < 1 0 . 0
< 1 0 . 0 < 1 0 . 0
<10.0 23.9
1087. 1087.
1037. 957.
17. 57.
• TPH - TOTAL PETROLEUM HYDROCARBONS
TRFH - TOTAL RECOVERABLE PETR
8 * RECOMMENDED PROCEDURE FROM
MANUAL, MAY 1988
1
1
1
PETER SHEN
8 LABORATORY DIRECTOR
PS /at
1
OLEUM HYDROCARBONS
LEAKING UNDERGROUND FUEL TANK FIELD
_ OHAI ITY ASSIIRANrF
LABORATORY
COMPANY : GeoWVv<Lo,\ G -W\dt
PROJECT NAME/NUMBER: -^ S^L^U .A. LOG NUMBER:"TOf Q fo / (£)
DATE OF
SAMPLE
SAMPLE
LOCATION
ONT
YPE
AMPLE
TYPE
ANALYSIS
REQUIRED 'COMMENTS
imt so'-u.'
Ja.\v , , ,... : It c-
n \\IV
n
?^ 2 M I)TV\\
T?zf-n
M '1
\\It cr
-
CORRECT CONTAINER TYPE: YES NO
SfiND RESULTS TO ATTN:
PHONE
U I S H£ D B YB
M
A T
RELINQUISHED BY
RELINQUISHED BY
-innn
DATE/TIME'
DATE / TIME
RECEIVED BY
RECEIVED BY
'i.. .1
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
QUALITY ASSURANCE LABORATORY
555 NANCY RIDGE DR., SUITE 300
SAM DIEGO, CALIFORNIA 92121
(619) 566-1060
GEQTECHNICAL EXPLORATION, INC.
ATTN: ROBERT STETTLER
7420 TRADE STREET
SAN DIEGO, CA 92121
DATE OF REPORT
DATE RECEIVED
DATE OF SAMPLE
DATE COMPLETED
ANALYZED BY
SAMPLE TYPE
PROJECT NAME
PROJECT NUMBER
ANALYSES RESULTS
ANALYSIS: TPH
METHOD: DHS*
LOG NUMBER SAMPLE ID UNITS: MG/KG
11023-90 MW 1.5 <10.0
1 1 0 24-90 M W 1 . 1 0 < 1 0 . 0
CCCV 107/1
SPIKE RECOVERY 1017.
DUPLICATE RPD 37.
AUGUST 1, 1990
JULY 24, 1990
JULY 24, 1990
JULY 31, 1990
VJ MC
2 SOIL
CARLSBAD RACEWAY
#5291
TRPH
EPA 418.1
MG/KG
13.9
< 1 0 . 0
1037.
1007.
127.
TPH - TOTAL PETROLEUM HYDROCARBONS
TRPH - TOTAL RECOVERABLE PETROLEUM HYDROCARBONS
* RECOMMENDED PROCEDURE FROM LEAKING UNDERGROUND FUEL TANK FIELD
MANUAL, MAY 1988
PETER SHEN
LABORATORY DIRECTOR
.QUALITY ASSURANCE.
LABORATORY
-• > is *.<:•:
QUALITY ASSURANCE LABORATORY
CHAIN OF CUSTODY
••&.%<
.
DATE OF
SAMPLE
\\
SAMPLE
LOCATION
CONT
TYPE
u
TRANSPORT CONDITION:
\!
TO ATTN
m38$ms£j.
'iSSf.
^£
mmvY*
AMPLE
TYPE
\\
. A. LOG NUMBER:
ANALYSIS
REQUIRED
-+
...COMMENTS
r\.-
* -C-
CO
CORRECT CONTAINER TYPE: YES VL NO
.BY
RELINQUISHED .BY
DATE/TIME--
DATE/TIME
DATE/TIME
RECEIVED BY
RECEIVED BY
5L
I
A JnC. Corporate Offices 555O Morehouse Drive San Diego. CA 92'21 (619) 453-9141
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ATI I.D. 009251
October 9, 1990
Geotechnical Exploration, Inc.
7420 Trade Street
San Diego, California 92121
Project Name: Carlsbad Raceway
Attention: Robert A. Stettler
On September 19, 1990, Analytical Technologies, Inc. received one
water sample for analyses. The sample was analyzed with EPA
methodology or equivalent methods as specified in the attached
analytical schedule. The symbol for "less than" indicates a
value below the reportable detection limit. Please see the
attached sheet for the sample cross reference.
The results of these analyses and the quality control data are
enclosed.
TJF:d
TimotnyAT. Fitzpatrick /^!-t^-Ricnard &L. Amano
Senior/Project Manager " Laboratory Manager
ArialyticalTechnologies,lnc.ATI.I.D. 009251
I
I
I
I
I
I
i
I
I
I
I
I
I
I
I
I
I
ANALYTICAL SCHEDULE
CLIENT: GEOTECHNICAL EXPLORATION, INC.
PROJECT NAME: CARLSBAD RACEWAY
PROJECT NO.: (NONE)
ANALYSIS TECHNIQUE REFERENCE/METHOD
PETROLEUM HYDROCARBONS IR
ORGANOCHLORINE
PESTICIDES AND PCBs GC/ECD
ORGANOPHOSPHORUS
PESTICIDES GC/FPD
HYDROCARBONS (C5-C12)/ GC/FID/PID
BENZENE, ETHYLBENZENE,
TOLUENE, & XYLENES
EPA 418.1
EPA 8080
EPA 8140
MOD EPA 8015-CDOHS/8020
1
1 " ^A^AnalyticalTechnologies,lnc.
CLIETIT : GEOTECHNICAL EXPLORATION, INC. DATE RECEIVED
PROJECT # : (NONE)
PROJECT NAME : CARLSBAD RACEWAY REPORT DATE
• ATI I.D. : 009251
IATI # CLIENT DESCRIPTION MATRIX DATE-_ _ _______
01 MW1 WATER
1
1
1
1
1
1
1
1
1 .
1
MATRIX # SAMPLES
1 — — _ _._.
WATER 1
• ATI STANDARD DISPOSAL PRACTICE
The samples from this project will be disposed of in twenty-one (21)
Ithe. date of this report. If an extended storage period is required,
contact o'ur sample control department before the scheduled disposal
1
1
: 09/19/90
: 10/09/90
COLLECTED
09/19/90
days from
please
date.
1
• /ui\AnalyticalTechnologies,lnc./l\ AnnlvtirnlT«chnftlnni*« Inr GENERAL CHEMISTRY RESULTS
ATI I.D. : 009251
ILIENT
'ROJECT #
PROJECT NAME
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
GEOTECHNICAL EXPLORATION, INC. DATE RECEIVED : 09/19/90
(NONE) -
CARLSBAD RACEWAY ' REPORT DATE : 10/09/90
PARAMETER UNITS 01
PETROLEUM HYDROCARBONS, IR MG/.L 0.12
'' A_ fjj^AnolyticalTechnologies/l6£NERAL CHEMISTRY - QUALITY CONTROL
CLIENT
PROJECT #
PROJECT NAME
GEOTECHNICAL EXPLORATION, INC.
(NONE) " •
CARLSBAD RACEWAY ATI I.D. : 009251
SAMPLE DUP. SPIKED SPIKE %
[PARAMETER UNITS ATI I.D. RESULT RESULT RPD SAMPLE CONC REC
I
I
I
PETROLEUM HYDROCARBONS MG/L 00925301 0.12 0.09 29 3.6 5.0 70
I
I
I
I
I
I
I
I
I
% Recovery = (Spike Sample Result - Sample Result)X 100
Spike Concentration
RPD (Relative Percent Difference) = (Sample Result - Duplicate Result)
• _ X 100
• Average Result
)
/
I
I
1 AISjj^ AnalyticolTechnoIogies,lnc.
GAS CHROMATOGRAPHY - RESULTS
ATI I.D. : 00925101
I TEST : EPA 8080 (ORGANOCHLORINE PESTICIDES
I CLIENT : GEOTECHNICAL EXPLORATION,
PROJECT # : (NONE)
PROJECT NAME : CARLSBAD RACEWAY
CLIENT I.D. : MW1
• SAMPLE MATRIX : WATER
•
COMPOUNDS
ALDRIN
I ALPHA-BHC
BETA-BHC
GAMMA-BHC (LINDANE)
DELTA -BHCICHLORDANE
P,P'-DDD
P,P'-DDE
|
P,P'-DDT
0,P'-DDD
0,P'-DDE
_ O,P'-DDT
• DIELDRIN
• ENDOSULFAN I
ENDOSULFAN II
1 ENDOSULFAN SULFATE
ENDRIN
ENDRIN KETONE
I HEPTACHLOR
HEPTACHLOR EPOXIDE
METHOXYCHLOR
TOXAPHENE
• AROCLOR 1016
• AROCLOR 1221
AROCLOR 1232
1AROCLOR 1242
AROCLOR 1248
AROCLOR 1254
1AROCLOR 1260
SURROGATE PERCENT RECOVERIES
• DEC (%)
1 /1
1
AND PCB'S)
INC. DATE SAMPLED
DATE RECEIVED
DATE EXTRACTED
DATE ANALYZED
UNITS
DILUTION FACTOR
RESULTS
<0.050
<0.050
<0.050
<0.050
<0.050
<0.50
<0.10
<0.10
<0.10
<0.10
<0.10
<0.10
<0.10
<0.050
<0.10
<0.10
<0.10
<0. 10
<0.050
<0.050
<0.50
<1.0
<0.50
<0.50
<0.50
<0.50
<0.50
<0.50
<0.50
39
09/19/90
09/19/90
09/20/90
10/01/90
UG/L
1
1
I ^J^ AnalyticolTechnologies,lftAS CHROMATOGRAPH Y - RESULTS
REAGENT BLANK
•TEST : EPA soso (ORGANOCHLORINE PESTICIDES
CLIENT : GEOTECHNICAL EXPLORATION,
•
PROJECT # : (NONE)
PROJECT NAME : CARLSBAD RACEWAY
CLIENT I.D. : REAGENT BLANK
• COMPOUNDS
ALDRIN
IALPHA-BHC
BETA-BHC
GAMMA-BHC (LINDANE)
m DELTA- BHC
• CHLORDANE
™P,P'-DDD
P,P'-DDE
|
P,P'-DDT
O,P'-DDD
0,P'-DDE
|
0,P'-DDT
DIELDRIN
ENDOSULFAN I
ENDOSULFAN II
•ENDOSULFAN SULFATE
• ENDRIN
ENDRIN KETONEIHEPTACHLOR
HEPTACHLOR EPOXIDE
METHOXYCHLOR
ITOXAPHENE
AROCLOR 1016
AROCLOR 1221
AROCLOR 1232
•AROCLOR 1242•AROCLOR 1248
AROCLOR 1254
•AROCLOR 12 e o
SURROGATE PERCENT RECOVERIES
JDBC (%)
1
1
1
1
AND PCB'S)
ATI I.D.
INC. DATE EXTRACTED
DATE ANALYZED
UNITS
DILUTION FACTOR
RESULTS
<0.050
'<0.050
<0.050
<0.050
<0.050
<0.50
<0.10
<0.10
<0.10
<0.10
<0.10
<0.10
<0.10
<0.050
<0.10
<0.10
<0.10
<0.10
<0.050
<0.050
<0.50
<1 . 0
<0.50
<0.50
<0.50
<0.50
<0.50
<0.50
<0.50
101
: 009251
: 09/20/90
: 09/21/90
: UG/L
: N/A
-
•I
I ^JL^ AnalyticolTechnologies,lnc.
QUALITY CONTROL DATA
ATI I.D.
EST : EPA 8080 (ORGANOCHLORINE PESTICIDES AND PCB'S)
I
r
LIENT
ROJECT #
PROJECT NAME
EF I.D.
GEOTECHNICAL EXPLORATION,
(NONE)
CARLSBAD RACEWAY
00926005
INC DATE EXTRACTED
DATE ANALYZED
SAMPLE MATRIX
UNITS
009251
09/20/90
10/01/90
WATER
UG/L
IMPOUNDS
DUP. DUP.
SAMPLE CONC. SPIKED % SPIKED % -
RESULT SPIKED SAMPLE REC.SAMPLE REC.RPD
•GAMMA BHC
JHEPTACHLOR
ALDRIN
—DIELDRIN
•ENDRIN
•DDT
<o
<o
<o
<o
<o
<0
. 0040
.0030
.0040
.0070
.0060
.012
0
0
0
0
0
0
.190
.190
.190
.476
.476
.476
0.
0.
0.
0.
0.
0.
19
17
18
48
41
48
100
89
95
101
86
101
0.
0.
0.
0.
0.
0.
16
14
15
46
39
50
84
74
79
97
82
105
17
19
18
4
5
4
I
I
I
I
I
1% Recovery = (Spike Sample Result - Sample Result)
. X 100
Spike Concentration
•RPD (Relative % Difference) = (Spiked Sample - Duplicate Spike)
Result Sample Result
I
I
I
I
X 100
Average of Spiked Sample
1
«^A AnalyticalTechnologies,lnc.
^^ GAS CHROMATOGRAPHY - RESULTS
ATI I.D. : 00925101
"TEST : EPA 8140 (ORGANOPHOSPHORUS PESTICIDES) ••
•
CLIENT : GEOTECHNICAL EXPLORATION, INC. DATE SAMPLED 09/19/90
PROJECT #••• : (NONE) DATE RECEIVED 09/19/90
PROJECT NAME : CARLSBAD RACEWAY DATE EXTRACTED 09/20/90
1CLIENT I.D. : MW1 DATE ANALYZED 10/06/90
SAMPLE MATRIX : WATER UNITS UG/L
DILUTION FACTOR 1
• COMPOUNDS RESULTS
0-DEMETON <1.0
Is-DEMETON <1-0
DIAZINON • <1-0
DISULFOTON <1-0
1 METHYL PARATHION <1-0
MALATHION <2.0
ETHYL PARATHION <1.0
ETHION <1.0
• AZINPHOSMETHYL (GUTHION) <5.0
1
1
I
1
I
I
I
1 /
1
1
1
I
I
A VI<3&S CHROMATOGRAPHY - RESULTS
REAGENT BLANK
TEST : EPA 8140 (ORGANOPHOSPHORUS PESTICIDES)w
CLIENT
I PROJECT #
PROJECT NAME
CLIENT I.D.
COMPOUNDS
: GEOTECHNICAL EXPLORATION, INC.
: (NONE)
: CARLSBAD RACEWAY
: REAGENT BLANK
ATI I.D.
"DATE EXTRACTED
DATE ANALYZED
UNITS
DILUTION FACTOR
RESULTS
: 009251
: 09/20/90
: 10/06/90
: UG/L
: N/A
o-DEMETON
s-DEMETON
DIAZINON
DISULFOTON
ETHYL PARATHION
LATHION
ETHYL PARATHION
THION
ZINPHOSMETHYL (GUTHION)
I
L^•ME
IMA
E
I
I
I
I
I
I
I
I
I
I
I
I
<2.0
<5.0
•I
I
I
A AnalyticalTechnologies,lnc.
QUALITY CONTROL DATA
EST : EPA 8140 (ORGANOPHOSPHORUS PESTICIDES)
r
CLIENT : GEOTECHNICAL EXPLORATION, INC.
[PROJECT # : (NONE)
PROJECT NAME : CARLSBAD RACEWAY'
EF I.D. : REAGENT WATER
ATI I.D.
DATE EXTRACTED
DATE ANALYZED
SAMPLE MATRIX
UNITS
009251
09/20/90
10/06/90
WATER
UG/L
COMPOUNDS
DUP. DUP.
SAMPLE CONC. SPIKED % SPIKED %
RESULT SPIKED SAMPLE REC.SAMPLE REC.RPD
EIAZINON
ETHYL PARATHION
GUTHION
— ETHYL PARATHION
1
1
1
1
1
<1.0 10.0 8.5 85 7.9 79, 7
<1.0 10.0 11 110 10 100 10
<5.0 20.0 16 80 15 75 6
<1. 0 10. 0 8.0 807.8 78 2
I Recovery = (Spike Sample Result - Sample Result)------------------------------------
Spike Concentration
X 100
I
I
I
I
(Relative % Difference) = (Spiked Sample - Duplicate Spike)
Result Sample Result
Average of Spiked Sample
X 100
AnalyticolTechnologies,lnc.
GAS CHROMATOGRAPHY - RESULTS
ATI I.D.
TEST : MOD EPA 8015-CDOHS/8020 (HYDROCARBONS C5-C12/BTXE)
00925101
CLIENT :' GEOTECHNICAL EXPLORATION, INC.
PROJECT # : (NONE)
PROJECT NAME : CARLSBAD RACEWAY
CLIENT I.D. : MW1
SAMPLE MATRIX : WATER
DATE SAMPLED
DATE RECEIVED
DATE EXTRACTED
DATE ANALYZED
UNITS
DILUTION FACTOR
09/19/90
09/19/90
N/A
09/27/90
UG/L
1
COMPOUNDS RESULTS
I
I
I
I
I
I
I
I
I
I
I
I
BENZENE
TOLUENE
ETHYLBENZENE
XYLENES (TOTAL)
FUEL HYDROCARBONS
HYDROCARBON RANGE
HYDROCARBONS QUANTITATED USING
SURROGATE PERCENT RECOVERIES
TRIFLUOROTOLUENE (%)
<0.50
<0.50
<0.50
<1.0
<50
C5-C12
GASOLINE
86
•I
I
I
I
I
I
I
I
1
I
I
I
I
I
I
I
I
I
I
AnolyticdTechnologiesJnSAS CHROMATOGRAPHY - RESULTS
REAGENT BLANK
TEST : MOD EPA 8015-CDOHS/8020 (HYDROCARBONS C5-C12/BTXE)
- . ATI I.D. : 009251
CLIENT : GEOTECHNICAL EXPLORATION, INC. DATE EXTRACTED : N/A
PROJECT # : (NONE) DATE ANALYZED : 09/27/90
PROJECT NAME : CARLSBAD RACEWAY UNITS : UG/L
CLIENT I.D. : REAGENT BLANK DILUTION FACTOR : N/A
COMPOUNDS RESULTS
BENZENE <0.50
TOLUENE <0.50
'ETHYLBENZENE . <0.50
XYLENES (TOTAL) <1.0
FUEL HYDROCARBONS <50
.HYDROCARBON RANGE C5-C12
HYDROCARBONS QUANTITATED USING GASOLINE
SURROGATE PERCENT RECOVERIES
TRIFLUOROTOLUENE (%) 96
I
I
I
I
I
I
I
I
I
I
I
I
I
ASjj^ AnalyticolTechnologies,lnc.
QUALITY CONTROL DATA
ATI I.D.
TEST : MOD EPA 8015-CDOHS/8020 (HYDROCARBONS C5-C12/BTXE)
CLIENT : GEOTECHNICAL EXPLORATION, INC.
PROJECT # : (NONE)
PROJECT NAME : CARLSBAD RACEWAY
REF I.D. : 00927205
DATE EXTRACTED
DATE ANALYZED
SAMPLE MATRIX
UNITS
009251
N/A
09/27/90
WATER .
UG/L
COMPOUNDS
FUEL HYDROCARBONS
DUP. DUP.
SAMPLE CONC. SPIKED % SPIKED %
RESULT SPIKED SAMPLE REC.SAMPLE REC.RPD
6<5-0 100 94 94 100 100
; Recovery = (Spike Sample Result - Sample Result)
------------------------------------
Spike Concentration
x 100
I
I
I
I
(Relative % Difference) = (Spiked Sample - Duplicate Spike)
Result Sample Result
Average of Spiked Sample
X 100
. AnolyticalTechnologies,lnc.
5550 Morehouse Drive • San Diego, CA 92121-1709 Chain of Custody PAGE JL OF_\_
PROJECT MANAGER: "R^V^er
COMPANY: G»ET
V- A S'V'T^e.r"
ADDRESS: -^go^-p \ .<\
BILL TO: /Wo^vsVi "Pe
COMPANY: C.g~T
ADDRESS: .
Q^lfl^ i. JvlfUtJAx
SAMPLERS: (Signature)
SAMPLE ID
VANMJ
PROJECT INFORMATION
PROJECT NUMBER:
PROJECT NAME: Ca^-\5V»nA R,
PURCHASE ORDER NUMBER:
VIA:
TAT: Q24HR Q48HRS Q1 WK
=,V(X\»\t
(Q°\ JSM'A-'yz^z.
PHONE NUMBER
DATE TIME MATRIX LAB ID
^ Ps <\C 3'.\5 \f\c*kr- Of
Recommended Quantity and Preservative (Provide triple volume on QC Samples)
1S.
o^t/j
01
i
Petroleum Hydrocarbons 418.1x
1
!
i
CMpi
io>
0
S
3T
°Gasoline (MOD 8015/DOHS)S
S.
0
5OO
to.92O
O
Gasoline/BTXE (MOD 8015/8020)X
SAMPLE RECEIPT
TOTAL NUMBER OF CONTAINERS
-j-ov^iY CHAIN OF CUSTODY SEALS Y/N/NA
INTACT? Y/NMA
RECEIVED GOOD COND./COLD
^>
A/
/1//1
/
W2WKS LAB NUMBER 007£S~7'
SAMPLEDiSPOSAL INSTRUCTIONS
^E^ATI Disposal @ $5.00 each
Comments:
[] Return £3 Pickup (will call)
s.
8
(C6-C25.MOD 8015)2X40ml (HaySOgUJX
1
iS
o~
I
CO
i
c
o
o
IO
o
Aromatic Hydrocarbons (8020)S1
o
romatic(8010/8020)orinated/Arocarbons3z "°
'
t
.0D_
0'cn)
<5
REUNQUISHED BY: 1.
Sigr]
U;l£^j£ ?!S>
MiTedName: . Date:,
fHC/r 75 \-%%J(L\[ ^mfi
Company: '
RECEIVED BY: 1,
/
Signature: -Time:
i jS
Printed Name: / Date:
Company^
O)1
Pesticides/PCB (8080)X
5
Q_
O
§ »UJZ C/3a 2
a 0CO C3 2X40ml (HCiyiOOgfCMgo
O
O
-•§
1
§
5
Polynuclear Aromatic (83101
i
1
ocoo 500ml/100gCO3
1
o.
OL
V
-•o
"f
lo
r
|
<a
VI
0
o
<rc.
O1
o
ix
.
REUNQUJSHEDBY: 2.
Signature: Jime:
Printed Name : ,X Date:
Compapyf
^ECEWEDBY; ^/L
Signature: xxfime:
Printed Name: / Date:
Compary^
.••"•
Mi
4
to
I
|
z
RELINQUISHED BYi 3,
Signature: Time:
Printed Name: Date:
Company:
s f
RECEIVED BY? (L/B) / 3.
fA^f^jh^
mr^//W//®*'
Ana^^hnologi^^
ATI LABORATORIES: SanDieflO (619) 458-9141 . Phoenix (602)438-1530 • S«ettlo(206) 228-8335 DISTRIBUTION: White, Cvuuy - A^AtnCAL THCHNOLOGIES. INC. • Pink -ORIGINATOR
I
I
I
I
I
I
I
Appendix "C"
I MV Environmental, Inc.
Modified Phase I Environmental Site Assessment
• Report Dated August 18, 1997
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Modified Phase I Environmental Site Assessment
I Carlsbad Raceway
6600 Palomar Airport Road
Carlsbad, California 92008
I
Prepared For:
• Lomas Santa Fe Group
• 265 Santa Helena, Suite #200
— Solana Beach, California 92075
I
Prepared By:
| MV Environmental, Inc.
2450 Vineyard Avenue, Suite #100
m Escondido, California 92029
• August 18, 1997
• Job No. 970110
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
TABLE OF CONTENTS
EXECUTIVE SUMMARY
1.0 INTRODUCTION 1
1.1 Authorization 1
1.2 Scope of Investigation 1
1.3 Limitations 2
2.0 SITE CHARACTERISTICS 2
2.1 Site Location 2
2.2 Adjacent Properties 2
2.3 Site Description and Current Property Tenants/Operation 3
3.0 ENVIRONMENTAL SETTING 3
3.1 Soil Conditions 3
3.2 Geologic Conditions 3
3.3 Groundwater Conditions 4
4.0 SITE INVESTIGATION 5
4.1 Property Description 5
4.2 Asbestos 5
4.3 PCB's 6
4.4 Hazardous Materials Use, Generation and Disposal 6
4.5 Adjacent Property Observations 7
5.0 REGULATORY AGENCY FILE REVIEW 8
5.1 Federal Database Listings 8
5.1.1 National Priority List (NPL) 8
5.1.2 Comprehensive Environmental Response, Compensation and Liability
Information System (CERCLIS) 8
5.1.3 Resource Conservation and Recovery Act, Treatment, Storage,
Disposal Facilities (RCRA TSD) 9
5.1.4 Resource Conservation and Recovery Act Hazardous Waste
Generators (RCRA GEN) 9
5.1.5 Emergency Response and Notification System (ERNS) 9
5.2 State Database Listings 9
5.2.1 State Listing of Hazardous Waste Sites 9
5.2.2 Registered Underground Storage Tanks (UST) 9
5.2.3 San Diego County Department of Environmental Health Leaking
Underground Storage Tanks (LUST) 10
5.2.4 Solid Waste Landfills 10
5.3 Local Listings 10
5.3.1 Carlsbad Building Department 10
5.3.2 City of Carlsbad Fire Department 11
5.4 Historical Use Information 11
5.4.1 Aerial Photographs Review 11
5.4.2 Sanborn Fire Insurance Maps 12
5.4.3 Assessors Tax Rolls 12
I
Table of Contents, Continued
I
6.0 RESULTS OF PREVIOUS ENVIRONMENTAL INVESTIGATION 12
I 7.0 SOIL ASSESSMENT 14
7.1 Petroleum Hydrocarbons Assessment 15
1 7.2 Agricultural Chemical Assessment 18
8.0 FINDINGS AND CONCLUSIONS 19
9.0 LIMITATIONS 20
• Figures:
1. Regional Index Map
• 2. Site Map
Appendices:
I A. Likelihood Statement
B. Site Photographs
C. EDR Radius Report with Geocheck
I D. Ceimic Laboratory Report
™ E. References
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1
I
I
I
I
MV ENVIRONMENTAL, INC.
2450 Vineyard Avenue #100
Escondido, California 92029-1229
760/480-9789 Fax: 739-0343
Job No. 970110
August 18, 1997
Lomas Santa Fe Group
Attention: Ms. Arleen Tavernier
265 Santa Helena, Suite #200
Solana Beach, California 92075
Modified Phase I Environmental Site Assessment
Carlsbad Raceway, Carlsbad, California
Pursuant to your request and verbal authorization, MV Environmental, Inc. (MVE) has
completed an Environmental Site Assessment at the above referenced property.
In the process of conducting a Phase I and Phase II Environmental Assessment at the
above referenced property, MVE found no conditions within the limits of this investigation
which would present an environmental liability to the prospective buyer.
Please find three copies of our assessment of the property and an invoice for professional
services on this project. If we may be of further assistance on this or any other project,
please do not hesitate to contact the undersigned at 760/480-9789.
MV ENVIRONMENTAL, INC.
Brad Crawshaw
Project Manager
REA 3073
BC/mmd
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
EXECUTIVE SUMMARY
Prior to the use of the property as the Carlsbad Raceway (1961), the four parcel (148 acre)
site was undeveloped property. The site has a street address of 6600 Palomar Airport
Road, Carlsbad, California located in the eastern limits of the incorporated city (Figure 1).
The raceway leasing office and associated structure, located in the eastern portion of the
site, were permitted for construction in 1977. Additional small wood frame and cinder block
structures located on the property were not permitted according to building record review
at the Carlsbad Building Department. The site is currently zoned Industrial/Office space.
Based on review of the property and our site inspections on July 23 and 24, 1997, MVE
observed several areas of potential environmental concern associated with fuel
hydrocarbon use onsite. In addition, review of the land use activity of adjacent properties
identified two areas where agricultural sites drain onto the subject property.
On July 9, 1997, three areas were chosen for soil sampling and assessment of fuel
hydrocarbons and two areas chosen for assessment of agricultural chemical residue.
These areas were identified as: (1) former heavy equipment storage area; (2) 10,000-
gallon fuel storage tank; (3) south adjacent property used for commercial crop
development; (4) gasoline drums in drag strip pit area; (5) stream sediments for agricultural
chemical residue from north and northeast adjacent properties.
Analytical results identified no detectable fuel hydrocarbons in the area surrounding the
empty fuel drums in the drag strip pit area. The laboratory analysis of soil for agricultural
chemical residues adjacent to the south property line and the stream bed in northwest
quadrant of the site reported non-toxic concentrations for all analytes.
Positive results using EPA Method 418.1 were recorded for two samples, A1-1 and A2-2,
located in the heavy equipment storage area and adjacent to the large 10,000-gallon fuel
storage tank, respectively. Soil sample A1-1 reported 4.0 milligrams per kilogram (mg/kg)
of total recoverable petroleum hydrocarbons (TRPH) at a depth of one foot below grade.
Soil sample A2-2 reported 83 mg/kg TRPH at a depth of two feet below grade.
No observed soil staining nor hydrocarbon odors were observed or detected upon sample
recovery. It has been MVE's experience when using EPA Method 418.1 that false
"positive" results can occur from detection of organic carbon (decomposed plant matter).
Assuming the concentrations represent petroleum hydrocarbon and not organic carbon, as
suspected, the concentrations reported are below the established regulatory cleanup action
levels (100 mg/kg) for petroleum hydrocarbons. This occurrence using the EPA 418.1
analysis does not represent an environmental liability in our opinion.
The assessment of subsurface soils was based on surficial features and structures which
present obvious environmental concern (e.g. drums, tanks, etc.). The results presented
in this report of soil conditions surrounding the above listed areas does not exclude the
possibility that fuel hydrocarbons or agricultural chemical residue are not present at
detectable levels at other locations onsite. MVE has sampled areas of the property with
the highest probability of having detectable concentrations of the contaminants of concern.
It is our judgment that the soil assessment conducted by MVE is representative of site
conditions and that further assessment of soil conditions is unwarranted at this time.
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Executive Summary continued
As noted herein, several hundreds of rubber tires were observed around the entry roads,
behind the storage shed, and at the end of the drag strip which must be removed from the
site. As such, they represent solid waste and are not to be incorporated into the proposed
development of the site.
There were observed two 55-gallon drums containing waste oil located adjacent to the
concession stand at the drag strip pit area. At the present time these drums represent
environmental liability. No leaks nor signs of distressed vegetation were noted surrounding
the drums at the time of our inspection. The drums and contents are to be removed to an
appropriate treatment/disposal facility. In addition, the 1,000-gallon empty above ground
storage tank located north of the drag strip will require proper cleaning and disposal to
appropriate facilities.
Structural inspections were conducted to the degree allowable with no evidence of
asbestos containing building materials (ACBM) observed. No asbestos sampling was
requested, however, sampling of building materials is advised prior to demolition of the
buildings.
The subject site is serviced by municipal water, and electricity. Two septic systems are
located onsite, one for the leasing office and the other for the public restrooms located near
the drag strip. Solid waste is removed under contract with Coast Waste Management.
The general area surrounding the subject site contains mostly commercial/industrial
properties and an active agricultural property northeast of the site. There are no current
conditions visible from public access on any adjacent property which would normally be
associated with potential environmental liabilities (e.g. gas pumps, landfills, etc.) which
could adversely affect the property.
A thorough site survey, a review of regulatory agency records, a review of local historical
resources, and interviews with knowledgeable persons did not reveal any historic
environmental liabilities that would be the subject of enforcement action by appropriate
governmental agencies.
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Modified Phase I Environmental Site Assessment
Carlsbad Raceway
660 Palomar Airport Road
Carlsbad, California 92008
1.0 INTRODUCTION
This report presents the findings of a Phase I and II Environmental Site Assessment (ESA)
conducted by MV Environmental, Inc. (MVE) on the Carlsbad Raceway in Carlsbad,
California. MVE's work was conducted between July 8, 1997 and August 6, 1997.
The purpose of the investigation is to provide adequate inquiry into past ownership and
uses of the property consistent with customary practice to recognize and identify
environmental concerns to the proposed development and surrounding properties.
MVE evaluates the likelihood of risk associated with any observed, suspected or referenced
hazardous materials resulting from onsite conditions and adjacent property activity. A
description and example of a likelihood statement of risk to human receptors is provided
in Appendix A.
1.1 Authorization
This work was conducted under a contractual agreement between the Lomas
Santa Fe Group (the client), and MV Environmental, Inc. (MVE) dated June 30,
1997.
1.2 Scope of Investigation
The scope of work of this environmental assessment is in conformance with the
American Society for Testing and Materials (ASTM) Standard 1527-97 and the
standard requirements of the Lomas Santa Fe Group.
Soil samples were collected on July 9, 1997 and the site reconnaissance was
conducted by MVE staff on July 23 and 24, 1997.
Historical property information was reviewed at:
• Carlsbad Building Department
• Carlsbad Fire Department
• San Diego County Cartography Department, Planning and Land Use
Department
Government database records were provided to MVE by Environmental Data
Resources, Inc. (EDR) within ASTM standard radius distances from the site. In
addition, MVE reviewed the Phase I and Phase II Reports of Hazardous
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
1
1
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 2
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
Materials Site Assessments on the Carlsbad Raceway Property completed in
1990-1991 by Geotechnical Exploration, Inc.
MVE reviewed listed and observed cases with environmental implications and
relates the likelihood of those sites of having an impact on the study property.
1.3 Limitations
In accordance with ASTM 1527-97 format, no sampling of non-RCRA (Resource
Conservation Recovery Act) scope issues were conducted (e.g. asbestos, radon
and lead paint).
2.0 SITE CHARACTERISTICS
2.1 Site Location
The subject property is located in northern coastal San Diego County, on the
eastern boundary limits of the City of Carlsbad, State of California. The 148 acre
site is bound on the south by north sloping undeveloped land, on the west by
graded vacant commercial lots, and the incorporated boundary of the City of
Vista on the north and east (Figure 1). The site has a street address of 6600
Palomar Airport Road and is further identified by four Assessors Parcel Numbers
(APN's) 221-010-22; 221-011-03; 221-011-04; and 221-011-05. The City of
Carlsbad's General Plan designates this site as Planned Industrial/Office space.
2.2 Adjacent Properties
The general surrounding area contains mostly commercial and industrial zoned
acreage. All adjacent properties north, east, and south of the site are higher in
elevation than the study property. The commercial Carlsbad Oaks East
development to the west is lower in finish grade elevation than the study site. To
the north, the properties are all zoned industrial. Ownership is held by Mitsui
Fudosan, Inc., Business Park Industrial Property Partnership and the City of
Vista. Development of the north adjacent property began approximately 10
years ago with much of the hilly terrain still vacant/undeveloped at this time.
The east adjacent property, higher in elevation than the study site is vacant,
commercially zoned, and owned by Jack E. Adams, Inc.
The south adjacent property is owned by the Carillo Ranch Partnership and has
been used in the recent past for growing beans and tomatoes. No use of the
land was observed during our site inspection.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
i
I
i
i
i
i
i
i
i
i
i
i
i
i
i
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 3
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
2.3 Site Description and Current Property Tenants/Operation
The study property is located in north San Diego County at the east side of the
incorporated City of Carlsbad. The site is located approximately 6.3 miles east
of the Pacific Ocean and 1.6 miles northwest of Lake San Marcos. The study
property is a rectangular shaped property which receives surface runoff from
four converging drainage channels (Figure 1). A United States Geological
Survey (USGS) blueline stream crosses through the northwest portion of the
property. Elevation onsite range from 310 feet to 490 feet above mean sea level
(MSL).
Improvements to the site include two permanent wood frame structures
(Carlsbad Raceway Leasing Office, a storage building and concrete ramps for
the former Skateboard Park, ticket booth, public bathrooms and assorted
miscellaneous wood framed structures used for official viewing of the coarse,
concession stands, grounds keepers building, and sheds. An asphalt paved drag
strip and several dirt motor cross tracks complete the property improvements.
The track and associated facilities are in poor general condition.
The site has been the home of the Carlsbad Raceway since 1964. The original
topography has been altered marginally to accommodate race course layouts for
the various venues. Seasonal surface runoff water crosses the northwest portion
of the property during periods of heavy rain. Mature stands of trees can be
observed marking the more pronounced drainage channels.
3.0 ENVIRONMENTAL SETTING
3.1 Soil Conditions
Soils at the property are described as tan to buff colored silty sand, and sandy
silt with seams of clay. Surficial cracks in the upper three feet identify the soil as
expansive clay over much of the site.
3.2 Geologic Conditions
The majority of the site is underlain by the Santiago Formation according to F.
Harold Weber, who is credited with mapping the geology of the site (1982). The
sediments were deposited in the Eocene period of the Tertiary Era some 50-60
million yearsago. The Santiago Formation is characterized at the site by pale
gray to white quartz - feldspar sandstone, clayey sandstone, clayey siltstone, and
silty claystone.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
i
i
l
i
i
i
i
i
i
i
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 4
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
The Eocene sediments are underlain by Cretaceous granites which are exposed
along the north property line on the east and west sides of the stream drainage
north of the drag strip. The intrusive rock is characterized by quartz diorite,
diorite, granodiorite and very minor amounts of gabbro. These rocks are
moderately firm in this area and are more resistant to erosion than the
sedimentary formations.
Quaternary alluvial deposits are mapped in the stream channel which enters the
site from the north. This designation is limited in extent to the main channel area
which is exposed in a limited area in the northwest quadrant of the property.
3.3 Groundwater Conditions
In most instances groundwater flow direction mirrors surface topography in
sedimentary deposits in its movement toward lower elevations. Waters of the
USGS blueline stream flow westward into Agua Hedionda Lagoon in Carlsbad,
California.
A permitted groundwater monitoring well was located on the south edge of the
seasonal stream in the northwest quadrant of the site. It was installed by
Geotechnical Exploration, Inc. in July 1990 during a Phase II Environmental
investigation of the Carlsbad Raceway. At that time groundwater was measured
at approximately 6 feet below the surface. The well has since been destroyed
(Grismer 1997). MVE found no reference to the wells abandonment in
conducting this investigation.
The site is located in the Los Manos Hydrologic Subarea (904.31) of the Agua
Hedionda Hydrologic Area (904.30) of the Carlsbad Hydrologic Unit (904.00).
Surface water in this subarea has beneficial uses for municipal, agricultural,
industrial, and recreation. Groundwater in this subarea also has a beneficial use
designation for municipal, agricultural and industrial applications. This
designation requires strict conformance with maximum contamination levels for
drinking water standards as identified by the State Water Resources Control
Board and enforced by the local regional board.
Much of the hydrology of the site has been altered because of race track and
facility construction. Some drainage have been crisscrossed by dirt roads, and
other areas have been channelized to change the original course of water flow.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
i
i
i
i
i
i
i
i
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 5
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
4.0 SITE INVESTIGATION
The study site was visited on July 23 and 24, 1997, by Brad Crawshaw, a geologist from
MV Environmental, to determine if environmental conditions exist which may impair human
health and/or the environment.
4.1 Property Description
There are few structural improvements to the site which have changed the
natural hillside contours of the local terrain. Limited earthwork is evident in the
eastern portion of the site (skateboard park area) where two wood frame single
story structures are located (see photographs Appendix B). Structural
improvements include the Carlsbad Raceway Leasing Office, a storage building
of same age, judges stations, ticket booths, public bathroom, track viewing
areas, concession stands, trailers, and cinder block building for the grounds
keeper.
The leasing office is a wood framed structure with a tar roof, concrete floor, with
unfinished plasterboard walls and ceiling. Electrical services to the building are
provided by San Diego Gas & Electric via overhead poles. Two pad mounted
electrical transformers are located off the southeast corner of the leasing office
and on the north side of drag strip starting line. Water is supplied by the
Carlsbad Water District. Although a sewer easement exists on the property, the
site is not serviced by a municipal sewer system. Two septic systems are
located onsite, one which services the office and another in the north-central
area for the public restrooms. Solid waste is removed from the site under
contract by Coast Waste Management.
The only other major improvement to the property that required earthwork is the
dominant drag strip, running southwest to northeast diagonally across the site.
The drag strip is located in a former drainage flowline. Minor topographical
alterations have occurred over time for racetrack modifications.
The hilly terrain is covered by baccharis scrub in natural drainage along the north
property line, mixed chaparral in the ravines and undisturbed areas on the south
side of the property, and diegan coastal sage scrub on the south-facing slopes
on the north portion of the property. Willow scrub, cattails and saltbrush occupy
most tributary drainage, primarily in the east and northwest portions of the site.
4.2 Asbestos
Although asbestos is a non-scope item in ASTM's 1527 format MVE addresses
the likelihood of it's presence in the on-site structures. Friable asbestos
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 6
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
containing building materials (ACBM) is described as reduced to a powder with
finger pressure. Any material containing greater than 1 % asbestos is considered
a hazardous material. Caveats to this definition are the materials general
condition, and whether or not the building is to be demolished or renovated.
Removal of ACBM is to be conducted by trained asbestos abatement
contractors.
The manufacture of friable ACBM was banned in 1980; however, it has been our
experience that ACBM's have been found in structures built several years after
the ban.
According to building department records, building permits for the structures
were issued in 1977 which indicates a moderate to high likelihood ACBM's
potentially exist.
As noted previously, the interior of the office building and associated storage
building are unfinished. Upon our inspection no friable materials were observed.
This does not eliminate the possibility of ACBM's in some form in the structures
and can only be confirmed by conducting a sampling program which MVE
recommends prior to demolition of the two structures.
4.2 PCB's
Polychlorinated biphenyl (PCB) were used prior to 1975 in electrical
transformers, capacitors, and light ballasts for their ability to transfer and
dissipate heat. It was found to be a human carcinogen and persistent in the
environment. Due to exposure concerns PCB's were outlawed from use in the
U.S. in 1975. It is still possible for some older pole mounted electrical
transformers to contain PCB dielectric oil. San Diego Gas and Electric has a
policy if dielectric oil from one of their transformers is found to contain PCB's,
the transformer will be upgraded and analytical costs reimbursed.
Both pole and pad mounted transformers are located on the property (see
photographs Appendix A). Easement rights were granted to San Diego Gas &
Electric to the vested parties in March 1967. PCB dielectric oil could potentially
be found in these transformers if analyzed; however, the general good condition
(no leaks or soil stains observed) of the transformers suggests there is a very
low likelihood, if any at all, of exposure concern.
4.3 Hazardous Materials Use, Generation and Disposal
The site has been an automotive and motorcycle racetrack since the mid-1960's.
Petroleum hydrocarbon (PH) fuels and lubricants are typically associated with
these sports, as well as spills, leaks, and accidents involving the release of PH
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS, GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
i
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 7
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
onsite. In addition, portions of the site have been leased to contractors who
stored heavy equipment in the southeast corner of the site and a concrete
equipment supply area north of the office building (Figure 2).
Several empty drums and tanks used for fuel storage have been observed on the
site during our inspection. Fifty-five gallon drums formerly containing race gas
are located north of the drag strip pit area. A 1,000-gallon empty diesel storage
tank located north of the drag strip and a 10,000-gallon fuel storage tank located
along the south property line were observed. No soil staining or distressed
vegetation has been observed that would indicate an unauthorized release of
petroleum hydrocarbons at the above locations.
Two, fifty-five gallon drums (1 steel and 1 polyvinyl) located near the concession
stand on the north side of the drag strip were observed full of waste oil. No
evidence of leaking or spillage was observed. Mr. Grismer was not available for
comment on disposal policy for the waste oil. MVE did not see evidence of
dumping on4he subject property.
It is our understanding that motor cross racers often dump engine oil on the
ground in the lower pit area. Minor (9-12" diameter) surface stains were
observed. Soil sampling in the pit areas was addressed in previous
environmental reports by Geotechnical Exploration, Inc. (GEI). Laboratory results
were below the San Diego County Department of Environmental Health Cleanup
Action Level (100 parts per million) for petroleum hydrocarbons. For details of
soil sample results refer to Section 6.0; Results of Previous Environmental
Investigation.
MVE noted the following areas of environmental concern which are addressed
in detail later in Sections 7.1 and 7.2:
»• former heavy equipment storage area along east end of south property
line
> potential agricultural chemical residue entering property from south
adjacent property
*• PH residue from 10,000 gallon fuel storage tank on south property line
•• PH residue surrounding 55-gallon drums of race gas in drag strip pit area
>• potential agricultural chemical residue in stream sediments adjacent to
lower motorcycle pit area resulting from long time agricultural activity
northeast of the site (Mount Olive Floral).
4.4 Adjacent Property Observations
The general area surrounding the property is predominantly dedicated to
commercial/industrial use. Potential environmental liability associated with
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
PAGES
AUGUST 18. 1997
agricultural chemical residue from the south and northeast adjacent properties
may present a concern if found on-site. These properties both drain and/or slope
toward the subject property. Results of MVE's soil assessment is discussed in
Section 7.2. No other environmental liability conditions were observed from
adjacent sites land use (e.g. gas pumps, landfills, etc.).
5.0 REGULATORY AGENCY FILE REVIEW
MVE has subcontracted Environmental Data Resources, Inc. (EDR).to perform a search
of available Federal, State, County, and local database records which meets the ASTM
Standard Practice for Environmental Site Assessments E1527-97. The ASTM Standard
searches are designed to identify sites which are capable of impacting the subject property.
Each list has a specified search radius from the study site. MVE identifies listings and sites
as prescribed by the Standard; however, EDR provides additional databases and site
listings. When other listings identify hazardous materials sites, MVE will identify those
sites. For a complete listing of databases searched, please refer to Appendix C.
MVE provides a likelihood statement of the identified concern having an impact on the
subject property.
5.1 Federal Database Listings
5.1.1 National Priority List (NPL)
The following NPL site listings occur within the search radius of 1.0 mile
from the subject property:
Site Name
None
Address
N/A
Distance (Ft)
N/A
Elevation Relative to Site
N/A
Case Status
N/A
5.1.2 Comprehensive Environmental Response, Compensation and
Liability Information System (CERCLIS)
The following CERLIS sites were identified within the standard search
radius of 0.5 miles:
Site Name
None
Address
N/A
Distance (Ft)
N/A
Elevation Relative to Site
N/A
Case Status j
N/A
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
PAGE 9
AUGUST 18. 1997
5.1.3 Resource Conservation and Recovery Act, Treatment, Storage,
Disposal Facilities (RCRA TSD)
The following RCRA TSD sites were identified within the standard search
radius of 0.5 miles:
Site Name | Address
None N/A
Distance (Ft.) | Elevation Relative to Site
N/A N/A
Case Status
N/A
5.1.4 Resource Conservation and Recovery Act Hazardous Waste
Generators (RCRA GEN)
The following RCRA GEN sites were identified within a standard search
radius of 0.125 miles. Listings include large and small quantity generators:
Site Name
None
Address
N/A
Distance (Ft.)
N/A
Elevation Relative to Site
N/A
Case Status
N/A
5.1.5 Emergency Response and Notification System (ERNS)
The following ERNS listings pertain to the subject property:
Site Name
None
Address I Distance (Ft)
N/A N/A
Elevation Relative to Site
N/A
Case Status
N/A
5.2 STATE DATABASE LISTINGS
5.2.1 California Listing of Hazardous Waste Sites (Cal-Sites)
The following California Hazardous Waste sites were identified within the
search radius of 1.0 mile:
Site Name
None
Address
N/A
Distance (Ft)
N/A
Elevation Relative to Site
N/A
Case Status
N/A
5.2.2 Registered Underground Storage Tanks (UST)
The following UST sites were identified within a standard search radius
of 0.25 miles:
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS, GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
PAGE 10
AUGUST 18. 1997
Site Name
None
Address
N/A
Distance (Ft)
N/A
Elevation Relative to Site f Case Status
N/A N/A
5.2.3 San Diego County Department of Environmental Health Leaking
Underground Storage Tanks (LUST)
The following LUST cases fall within the prescribed search radius of 0.5
miles:
Site Name j Address
None 1' N/A
Distance (Ft)
N/A
Elevation Relative to Site
N/A
Case Status
N/A
5.2.4 Solid Waste Landfills
The following listings of active and inactive landfills within a search radius
of 0.5 miles from the site:
Site Name 1 Address
None N/A
Distance (Ft.)
N/A
Elevation Relative lo Site
N/A
Case Status
N/A
It should be noted that the site, as observed during our onsite walk through was
observed to have hundreds of large tires both above ground and partially buried
around the track primarily for traffic control. It is estimated there are several
hundred tires at the east end of the drag strip used as a crash barrier. Additional
miscellaneous trash was observed onsite in the form of mobile trailer, truck and
car chassis, and a full drop-off bin belonging to Mashburn Sanitation. It is MVE's
recommendation that the materials be removed before modification of the site.
Given the sites history of minor grading for track layout and small uncontrolled
fill areas, the possibility of trash discovered during grading of the site is not
unlikely.
5.3 Local Listings
5.3.1 Carlsbad Building Department
Building Department records were reviewed on July 2, 1997. Records
indicate that the original application to the City for the Carlsbad Raceway
was December 1964.
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
PAGE 11
AUGUST 18. 1997
Building permits for the ticket building and office was issued September
18, 1977 to Sparks, Inc. (Mr. Larry Grismer). A permit for laundry facilities
was submitted by Sparks, Inc. in May 1978.
A variety of other permit applications for site modifications were reviewed
at the Building Department but were never executed according to
conversations with the manager of the facility (Mr. Jeff Grismer, 1997).
5.3.2 Carlsbad Fire Department
On July 2, 1997, MVE spoke to Ms. Carol Burke regarding information or
knowledge of any underground or above ground fuel storage tank permits
on the subject property. Ms. Burke stated that the Fire Department had
no record of tanks on the Carlsbad Raceway property.
5.4 Historical Use Information
5.4.1 Aerial Photographs Review
Aerial photographs of the site were reviewed on July 8, 1997 at San
Diego County Operations Center Cartographic Department. Photographs
were reviewed for activities on or adjacent to the property which could be
sources of environmental concern.
Year
1929
1953
1958
1960
Aerial Photograph Findings
Subject property was vacant undeveloped land. Adjacent properties
northeast of site viewed as agricultural. All other surrounding land use
is viewed as undeveloped. No evidence of dumping was observed.
Subject property viewed as undeveloped land. A lake located in NW
quadrant at the convergence of four drainage channels occupies the
area of the drag strip start area and the lower motorcycle pit area. No
evidence of dumping was observed in the photograph.
Subject property remains vacant of identifiable land use. The lake is
reduced in size. All adjacent properties are viewed as agricultural land.
No sign of dumping was observed on the property.
Subject property shows no sign of active use. Drainage is marked by
mature tree growth. The lake is very small and almost dry. Adjacent
properties north, south, east, and west all seen as agricultural. No sign
of dumping on the property was revealed in the photograph.
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
PAGE 12
AUGUST 18. 1997
1967
1989
Subject property is active race track with drag strip. North adjacent
property vacant of land use. All other surrounding properties remain
active agricultural. No signs of environmental liability on the property.
Subject property is active race track. The heavy equipment storage
area is graded flat and actively used. Business Park Drive and
Poinsettia extention have been constructed. Commercial development
has begun on north adjacent property. A dirt road crosses the site at
the west end to Palomar Airport Road. Agricultural development of
surrounding properties is declining. Only the south and east adjacent
properties show signs of agricultural use.
5.4.2 Sanborn Fire Insurance Maps
Sanborn Fire Insurance Maps depicting the target property at the 6600
Palomar Airport Road address were not identified.
5.4.3 Assessors Tax Rolls
The San Diego County Tax Assessors office located in Carlsbad,
California contains tax information and identifies property land owners.
MVE uses this information to determine past ownership and indication of
past owners business/operation on the particular parcel. The Carlsbad
office keeps tax roll records dating back to 1980. They identify the present
owner of the property as: Gentry Whimpey beginning in 1987 to present.
Prior ownership of the four parcels (Carlsbad Raceway Property) was
divided between the: Sandru, Rubel, and Belsan Investment Corporations
from 1985 -1980. According to Mr. Jeff Grismer the above investment
corporations held the property from 1963, prior to that the property was
listed to Mr. Larry Grismer beginning in 1961.
The historical property use has always been as a raceway, with no other
observed or reported uses.
6.0 RESULTS OF PREVIOUS ENVIRONMENTAL INVESTIGATIONS
In November 1990, Geotechnical Exploration, Inc. (GEI) prepared a Phase I Report of
Hazardous Materials Site Assessment at Carlsbad Raceway Property. The Phase I
recommended testing of near surface soils for various petroleum hydrocarbon
contaminants in four areas of the site.
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 13
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
1. The dirt entry road
2. The lower motorcycle pit area
3. The upper motorcycle pit area
4. The area surrounding an above ground fuel storage tank (1,000-gallon) near the
north property line.
On January 7, 1991, GEI presented findings of a Phase II Soil and Groundwater
Assessment of the above listed areas. In addition to soil sampling, GEI drilled a
groundwater monitoring well (MW-1) in the lower motorcycle pit area to 15 feet below
surface grade. Two soil samples were collected and analyzed for total petroleum
hydrocarbons (TPH) and total recoverable petroleum hydrocarbons (TRPH) using
Environmental Protection Agency (EPA) Methods 8015 and 418.1, respectively.
A groundwater sample was collected from the depth of 6.2 feet BSG and analyzed for TPH,
TRPH, benzene, toluene, ethylbenzene, and total xylenes (BTEX), organo-chlorine
pesticides and organophosphorus pesticides.
FINDINGS
Area #1 - Dirt Entry Road
A 1/8 to 1/4 inch thick lens of oil at a depth of 4 inches below the existing road surface
posted a TRPH concentration of 6,200 parts per million (ppm). Three additional samples
were collected at depth below this anomalously high reading. All subsequent sample results
were below the San Diego County Action Level (100 ppm) or the laboratories detection
limit.
GEI concluded that the cost to remove a 1/4 inch maximum thick lens of oil soaked dirt
4 inches below the surface would be "unreasonably expensive". In addition, soils were not
impacted by the oil at depths of 1.5 feet below the surface indicating no vertical migration.
Area #2 - Lower Motorcycle Pit Area
One trench was dug in the lower motorcycle pit area with samples submitted for analysis
of TPH and TRPH at 1, 2 and 3 feet BSG. All samples reported non-detectable
concentrations for TPH which detects both gasoline and diesel concentrations. Minor
concentrations of TRPH were detected in samples from 1 and 2 feet BSG; however, MVE
must caution that these concentrations may represent natural organic carbon and not
necessarily petroleum hydrocarbons. At any rate, the levels were well below the San Diego
County Cleanup Action Level for both samples.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 14
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
The groundwater sample reported 0.12 milligrams per liter (mg/L) or parts per million of
TRPH content, and below the laboratory detection limit for TPH, organochlorine pesticides
and organophosphorus pesticides.
It should be noted that organochlorine pesticides have a low solubility and are not generally
expected to be found in groundwater samples.
The level of TRPH is insignificant, in our opinion, and will present no likelihood of exposure
concern or environmental liability.
Area #3 - Upper Motorcycle Pit Area
Soil samples were collected at depths of 1 and 5 feet BSG in a test trench in the upper
motorcycle pit area with negative results for TPH in gasoline. The TRPH result was
detectable (38.4 ppm), but well below the San Diego County Action Level.
Area #4 - Area Surrounding Above Ground Storage Tank
Soil samples were collected at 1, 2, and 6 feet BSG in a test trench adjacent to an above
ground diesel fuel storage tank. Results were below the laboratory detection limit for TPH.
The TRPH value for a sample collected at 6 feet recorded 23.9 ppm, again well below the
cleanup action level, and quite possibly represents organic carbon rather than petroleum
hydrocarbons.
Three areas investigated were essentially "clean" posing no concern of environmental
liability. The one area reporting elevated TRPH concentrations was the 1/8 to 1/4 inch layer
of oil at an average depth of 4 inches BSG in the entry road. GEI concluded that it is
technically and economically unfeasible to remove these contaminated soils and that the
contamination is immobile and does not represent a threat to groundwater quality.
GEI further maintained that grading of the site will mix the contaminated soil with clean soil,
diluting the concentrations, with the end result being no human exposure concern.
7.0 SOIL ASSESSMENT
All tools used in collecting samples were cleaned between sample sites using a soapy
water solution, tap water rinsed followed by a second rinse in distilled water. Samples were
transferred to laboratory provided 4 ounce glass jars, labeled, sealed and stored in a cooler
on ice prior to and during transport to a State certified analytical laboratory.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 15
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
7.1 Petroleum Hydrocarbon Assessment
On July 9, 1997, MVE collected soil samples from areas identified below which
were not addressed by GEI in 1991. The previous investigation by GEI
documented soil conditions surrounding the 1,000-gallon above ground diesel
tank located north of the drag strip, the Raceway entry road that was previously
oiled for dust control, and the upper and lower motorcycle pit areas.
In conducting the site inspection, MVE noted additional areas of potential
environmental concern associated with petroleum hydrocarbon use or storage
on-site. These areas are:
• heavy equipment storage area
• 10,000-gallon fuel storage tank on south property line
• fuel storage drums north of drag strip pit area
Equipment Storage Area
According to Mr. Jeff Grismer, the southeast corner of the site was leased to
Merl Georganson Construction who stored heavy equipment on the property.
Diesel fuel, lubricating grease, and hydraulic fluid are commonly associated with
this type of equipment. MVE collected three soil samples (A1-1, A1-2, and A1-3)
from this area for analyses. Soil samples were submitted to a state certified
analytical laboratory for analyses of total recoverable petroleum hydrocarbons
(TRPH) using Environmental Protection Agency (EPA) Method 418.1, and total
petroleum hydrocarbons (TPH) in the diesel range using EPA Method 8015
Modified.
Sample A1-1 was collected at 1 foot BSG in silty sand with trace clay and
reported a concentration of 4.0 ppm TRPH. TPH as gas/diesel was below the
laboratory detection limit.
Sample A1-2 was collected at a depth of 2 feet BSG and reported non-detectable
TRPH and TPH concentrations.
Sample A1-3 was collected at a depth of 1 foot BSG and also reported less than
the laboratory detection limit for both TRPH and TPH. Relative locations of the
samples are shown on Figure 2 and the analytical results are provided on Table
1 and Ceimic Laboratory Report in Appendix D.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
1
I
I
I
I
I
i
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 16
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
10,000-Gallon Fuel Storage Tank
An empty 10,000 gallon fuel storage tank is located on the south adjacent
property line on a north facing slope. Mr. Jeff Grismer indicated that the tank has
been there for the past six years (since 1991). The tank owner/operator and its
former contents or location were not disclosed.
The tank condition was observed as heavily oxidized with no holes observed.
Contents of the tank were not determined by tank markings. Samples were
analyzed for both light and heavy hydrocarbons (C7-C30) using EPA Method
8015 Modified and for waste oil or TRPH using EPA Method 418.1.
Soil sample A2-1 was collected near the west end of the tank at 1 foot BSG.
Results were below the laboratory detection limit for TRPH and TPH as
gas/diesel.
Sample A2-2 was collected near the east tank end at a depth of two feet BSG.
This sample reported 83 ppm for TRPH and below the laboratory detection limit
for TPH gas/diesel. The 418.1 analysis does not identify the compound
specifically and there is no clean up action level associated with this analysis.
No soil stains nor petroleum hydrocarbon odors were noted during sample
collection.
Fuel Storage Drums North Side of Drag Strip Pit Area
Twelve empty 55-gallon fuel storage drums were observed located north of the
drag strip pit area. All drums were open and on their sides elevated off the
ground straddling two down telephone poles.
No soil stains or distressed vegetation was observed surrounding the drums.
Two soil samples were collected adjacent to the drums. Both samples (A4-1 and
A4-2) were collected at a depth of 1 foot BSG and analyzed for TPH and
benzene, toluene, ethylbenzene, and total xylene (BTEX) content using EPA
Methods 8015/8020.
Laboratory results posted concentrations below the laboratory detection limit for
all constituents.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD, CARLSBAD ___
PAGE 17
AUGUST 18. 1997
TABLE 1
FUEL HYDROCARBON ANALYSES
July 9, 1997
Sample Depth
MX If <FU
A1-1
A1-2
A1-3
A2-1
A2-2
A4-1
A4-2
1.0
2.0
1.0
1.0
2.0
1.0
1.0
Constituent
Petroleum Hydro.
Gas/Diesel
Petroleum Hydro.
Gas/Diesel
Petroleum Hydro.
Gas/Diesel
Petroleum Hydro.
Gas/Diesel
Petroleum Hydro.
Gas/Diesel
Gas
benzene
toluene
ethylbenzene
xylenes
Gas
benzene
toluene
ethylbenzene
xylenes
EPA Method
418.1
8015
418.1
8015
418.1
8015
418.1
8015
418.1
8015
8015
8020
8020
8020
8020
8015
8020
8020
8020
8020
Concentration
(mg/kg)
4.0
ND
ND
ND
ND
ND
ND
ND
83
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
Detection Limit
frosftsJ
2.0
5.0
2.0
5.0
2.0
5.0
2.0
5.0
2.0
5.0
2.5
0.025
0.025
0.025
0.050
2.5
0.025
0.025
0.025
0.050
Two samples had detectable concentrations of TRPH above the laboratory
detection limit. Sample A1-1 collected in the former equipment storage area, and
sample A2-2 collected on the east end of the large fuel storage tank. No PH
odors or soil staining were observed during sample collection. It should be noted
that false "positives" do sometimes occur using this analyses (EPA Method
418.1) in soil. Normally, MVE would recommend additional soil analyses
surrounding these positive "hits"; however, these readings may be due to organic
carbon (decayed plant material) in soil.
This test (EPA 418.1) does not have an established clean-up action level and is
an indicator test. The other analyses showed no detectable concentrations and
it is our opinion that there is a very low likelihood fuel hydrocarbons have
impacted sub-surface conditions in the investigated areas.
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS, GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 18
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
7.2 Agricultural Chemical Assessment
Historical research indicated that during the recent past (40 years), the areas
surrounding the subject property have been used for agricultural development.
In addition, all adjacent properties are higher in elevation than the subject
property with surface run-off from the surrounding area entering the subject site
via four drainages as seen on the regional index map (Figure 1).
GEI collected a groundwater sample from a depth of 6.2 feet BSG in the
northwest quadrant of the property adjacent to the USGS blueline stream
channel. This drainage picks up surfacial water north and east of the site.
Groundwater from monitoring well MW1 reported no detectable concentration of
petroleum hydrocarbons, organophosphorus nor organochlorine pesticides. As
noted earlier, these compounds are not readily soluble in water and if present are
more likely detectable in sediments.
To substantiate the previous findings, MVE collected two grab samples at depths
of 6 inches below the surface in the stream bed alluvial sediments. The samples
(A5-1 and A5-2) were analyzed for organochlorine and organophosphorus
pesticides using EPA Methods 8081 and 8140, respectively. Sample results
indicate all constituents were below the laboratory detection limits with exception
of one sample B5-2 which posted a concentration of 0.0017 mg/kg of alpha -
BHC. No levels were found in our review of this compound which presents an
environmental or human exposure concern. Furthermore, the consentration of
alpha-BHC is at the laboratory detection limit which indicates a very low level.
Results as well as quality control and quality assurance documentation can be
reviewed in Ceimic Laboratory report attached as Appendix D.
Three samples were collected along the property's south boundary adjacent to
land which has been farmed for several decades by the Carillo Ranch south of
the site. Samples A3-1, A3-2, and A3-3 were collected from a depth of one foot
BSG and analyzed for organochlorine and organophosphorus pesticides. All
samples reported concentrations below the laboratory detection limits.
Laboratory results are posted below.
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOILS GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I MODIFIED PHASE 1 ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
1 TABLE 2
PAGE 19
AUGUST 18. 1997
AGRICULTURAL PESTICIDE CONCENTRATIONS
1
1
1
1
Sample
MX
A3-1
A3-2
A3-3
A5-1
A5-2
Depthm.)
1.0
1.0
1.0
1.0
1.0
July9, 1997
Constituents
ALL
ALL
ALL
ALL
ALL
ALL
ALL
ALL
Alpha-BHC
EPAMetborf
8140
8080
8140
8080
8140
8080
8140
8080
8140
8080
Concentration
frngftai
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.0017
I Note: ND = not detected at the posted laboratory detection limit.
Laboratory Detection
Litrttt (mg/kg)
0.33
0.0017
0.33
0.0017
0.33
0.0017
0.33
0.0017
0.33
0.0017
1 Of the two categories (organochlorine and organophosphorus pesticides) only Alpha-BHC
was detected. The concentration was at the laboratory detection
There are no posted toxicity levels for alpha-BHC. This concentration
limit (0.001 7 mg/kg).
is viewed as very low
• given the laboratory detection level.
• 8.0 FINDINGS AND
The findings
CONCLUSIONS
and opinions of MVE presented in this report result from review of previous
1 reports, review of current regulatory databases, a review of historical photographs,
interviews with knowledgeable persons, a site reconnaissance, and a limited subsurface
soil investigation.1m Research records identified no previous land use activity which indicated any potential
environmental concern to the property. Present land use of the site as a drag strip and
I weekend motor cross race course introduces potential liability in the form of petroleum
hydrocarbon use, poor maintenance and housekeeping practices.
• During our site inspection, MVE observed no evidence of waste oil dumping, limited surface
soil staining by petroleum hydrocarbons, and no distressed vegetation. MVE did observe
— several areas on the property with potential environmental liability which were addressed
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT PAGE 20
660 PALOMAR AIRPORT ROAD. CARLSBAD AUGUST 18. 1997
in more detail by soil sampling. The areas investigated were: (1) the large 10,000-gallon
fuel storage tank located on the south property line; (2) the empty race gas fuel drums in
drag strip area; (3) the south adjacent properties agricultural land use; (4) and the stream
which drains agricultural property to the north and east of the site. All sample
concentrations were at or below the laboratory detection limits for the respective
constituents with the exception of two samples.
Soil samples A1-1 at a depth of 1.0 foot BSG in the former heavy equipment storage area
reported 4.0 ppm of TRPH. Sample A2-2 collected at a depth of 2.0 feet BSG on the west
end of the 10,000-gallon storage tank reported 83 ppm TRPH. No soil staining nor
petroleum hydrocarbon odors were observed during sample collection. It is MVE's opinion,
these reported concentrations represent organic carbon concentrations and not
representative of petroleum hydrocarbons. We believe there is a very low likelihood, if any
at all of petroleum hydrocarbons impacting soil or groundwater within the limits of our
subsurface investigation.
Surrounding properties have only recently (within 10 years) been commercially developed.
Prior to that time, most of the surrounding property has been used for agricultural
development. Two areas with the highest potential impact from adjacent agricultural
properties were assessed. The south property line is bound by land farmed by the Carillo
Ranch and the stream channel in the northwest quadrant of the site which drains properties
north and east of the site (Mount Olive Floral).
Three soil samples were collected near the south fence line to determine if legally applied
agricultural chemical residues would be detectable on the study property and to determine
if a potential environmental risk existed for the proposed land use change. In addition, two
near surface soil samples from the drainage channel were collected for analyses of
oganochlorine and organophosphorus pesticide content. All analyses were at or below the
laboratory detection limit for the individual analytes in these two category of compounds.
It is MVE's opinion there is a very low likelihood, if any at all of the property being adversely
impacted by agricultural chemical residue.
Two areas of the site were observed during our site inspections which exhibit
potential environmental liability: (1) two 55-gallon drums of waste oil adjacent to the
concession stand at the drag strip pit area, and (2) the hundreds of tires which mark
road boundaries and the drag strip crash barrier. MVE recommends they be
removed from the site prior to grading.
9.0 LIMITATIONS
This report was prepared for the exclusive use by our client, Lomas Santa Fe Group and
their designated representative(s). The findings of this report are valid as of the date of this
MV ENVIRONMENTAL, INC. • 2450 VINEYARD AVENUE, #100 • ESCONDIDO, CALIFORNIA 92029-1229 • 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL & GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MODIFIED PHASE I ENVIRONMENTAL SITE ASSESSMENT
660 PALOMAR AIRPORT ROAD. CARLSBAD
PAGE 21
AUGUST 18. 1997
report. It should be noted that changes within the condition of a site can occur with time
due to natural or man created conditions, either on-site or from adjacent properties. In
addition, changes in the standard-of-practice and/or government codes and regulations
may occur. These circumstances may result in the invalidation of this report, in part or
whole, which may be beyond our control.
In performance of our professional services, we comply with the level of care and skill
ordinarily exercised by members of our profession currently practicing under similar
conditions. The client recognizes that conditions often change, and that our conclusions
are based upon observations and available information. We shall not be liable for
conditions or consequences arising from relevant facts of information either incorrect,
concealed, withheld, or not fully disclosed from other sources.
We appreciate your choosing MVE for your environmental needs. If we may be of further
assistance on this or any other project, please contact us at 760-480-9789.
MV ENVIRONMENTAL, INC.
ph M.
Principal Engineer
RCE#25115
Brad Crawshaw
Project Manager
REA #3073
RMV/BC/mmd
mmd\mv-enc\970110.rpt
MV ENVIRONMENTAL, INC.2450 VINEYARD AVENUE, #100 ESCONDIDO, CALIFORNIA 92029-1229 760/480-9789
HAZARDOUS WASTE INVESTIGATIONS SOIL& GROUNDWATER REMEDIATION ENVIRONMENTAL AUDITS
Ref: San Luis Rey, Rancho Santa Fe, and Valley Center Quadrangles
Scale: 1" = 2,000' •
2450 Vineyard Avenue# 100
Escondido, California 92029-1229
619/480-9789 Fax: 739-0343
PROJECT NO. 970110 DATE 7/1/97 FIGURE:1
REGIONAL INDEX MAP
CARLSBAD RACEWAY
CARLSBAD, CALIFORNIA
Al-1
LEGEND
Sample location with I,D.
ND SCALE
Photograph location and tt
2450 Vineyard Avenue* 100
Escondtdo, Calitornia 92029-1229
619/480-9789 Fax: 739-0343
PROJECT NO. 970110 DATE 8/4/97 FIGURE: 2
SITE MAP
CARLSBAD RACEWAY
6600 PALEIMAR AIRPDRT RDAD
CARLSBAD, CALIFORNIA
Appendix "A
Likelihood Statement
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
APPENDIX A
Many statements have been made in this report regarding the likelihood of the occurrence
of certain adverse events. The term "likelihood", pertains to chance of a match between
the prediction for an event and its actual occurrence. Likelihood statements are based on
professional judgement of MV Environmental, Inc. A prediction made for the occurrence
of an event will either match the actual occurrence or not. Uncertainty about natural
processes, lack of adequate scientific understanding of the physical and chemical
interactions at the site, and insufficient data and information about the site conditions
usually preclude a perfect or 100-percent likelihood of a match between predictions and
actual occurrences. Therefore, when a perfect match is not possible, the likelihood
statement assigns a measure of a "degree of belief for the match between the prediction
for the event and the actual occurrence of the event.
The likelihood statements can either be made qualitatively (expressed in words) or
quantitatively (expressed in percentage ranges). The qualitative terms can be
approximately related to the quantitative percentage ranges. The following approximate
quantitative percentages granges are used by MV Environmental, Inc. for the qualitative
terms referred to in their likelihood statements.
The following presents a typical likelihood statement and its interpretation:
QUALITATIVE
TERMS
Very Low
Low
Low to Moderate
Moderate
Moderate to High
High
Very High
APPROXIMATE
PERCENT RANGE
Less than 1 0%
10% to 20%
20% to 40%
40% to 60%
60% to 80%
80% to 90%
More than 90%
Statement: Based on the site conditions, data presented, and current regulatory
guidelines of what constitutes a hazardous waste, it is the judgement of MV Environmental
Inc. that there is a low likelihood that hazardous waste from the landfill has migrated to the
subject site.
Interpretation: The example statement renders a professional judgment that there is a
low likelihood (approximately 10 to 20 percent) that hazardous was from the landfill has or
could have migrated to the site.
Appendix "B"
Site Photographs
I
;
I
•
I
|
i
!
i
j
ii
ii
J
i
View north fron Palonar Airport Road, Vista Gateway
Connercial property in background, Carlsbad Raceway
leasing office an of storage cuuding in uoper center.
East view of property fron wes~ a d , a c;
M e i r c Dri
vacant lot
ve in uooer eft
II
i
j
ji
iii
ii
iii
10;000 gallon fuel storage tank located opposite the south
property line. Tence narks the boundary. Test hole Al-1
in foreground,
Stream drainage in northwest Quadrant where sample A5-2
was collected.
1
III
I
J
;
i
I
i
West by Southwest view from Vista Gateway property to
the north. Drag Strip in upoer center, Palonar Airport Rd,
on horizon in u o D e r left.
East view of site fron fence line in southwest portion of
site. Drag Strip in center and entry road at uooer right.
f
!
I
i
i
i
i Race gas for drag cars. Foreground is drag strio pit area.
3acground dirt lot is lower motorcycle pit area.
wo druns in center contain waste oil located on north side of
o< r a g strip concession stand on edge of pit area. Notice ninor
s^rficiai soil staining in foreground.
i