Neighbor Comment Letter

September 4, 2026
Re: ZON25-00895 - Terrible’s Convenience Market / Fueling Station, 1432 S. Crismon
Road, APN 220-82-003
City of Mesa Development Services Department, Planning Division:
lam the owner of the immediately adjoining Property to the south, APN 220-82-004, 1448
S. Crismon Road. | am concerned about the proposed location of the underground fuel
tanks and associated fueling equipment.
A 2022 Phase | Environmental Site Assessment for APN 220-82-004 established an
important existing environmental baseline. The assessment found no recognized
environmental conditions associated with my property (see #1 below).
Adding a fueling facility next to my property creates a potential source of petroleum
contamination that does not presently exist.
Because my property is immediately south of the proposed facility, | believe the potential
effect of a fuel leak on neighboring properties should be evaluated before construction.
The Phase | identifies the following conditions that | believe are relevant:
e The natural ground surface slopes approximately 30 feet per mile toward the
southwest. Because APN 220-82-004 lies immediately south of the proposed site,
this slope has a southerly component in the direction of my property. (Section 5.1 -
Surface Gradients and Surface Water, #2 below)
e The area includes gravelly sandy loam, gravelly sandy clay loam, and gravelly
sand soils. (Section 5.3 - Soil Survey, #3 below) The supporting GeoCheck (#4
below) information states that contaminant plumes generally move more quickly
through sandy-gravelly soils than through silty-clayey soils.
e The Phase | also states that the regional groundwater-flow direction in the area
was “not clearly defined” and that actual local groundwater flow may differ
because of subsurface conditions, seasonal changes, and other factors. (Section
5.2 - Groundwater, #5 below)
| therefore ask that the Board not approve the fueling component in its present form
until the applicant has evaluated how a fuel leak could affect adjoining properties and
has provided appropriate safeguards, monitoring, leak-detection, and response
measures to protect APN 220-82-004. ;

| am not suggesting that a future fuel release would
necessarily reach my property. My
concern is that the available information does not establish that
contamination could not
migrate toward APN 220-82-004, and the existing 2022 Phase | provides a documented
environmental baseline that should be protected.
Tha ou fo
tL?
WE
b
mtign
Dan McRoskey,
MCR Scottsdale, LLC
Owner, APN 220-82-004

that off-site sources had caused contamination of the site. One
RCRA generator facility was identified within the approximate
minimum search distance requirements of ASTM Standard
Practice E1527-13. This listing is discussed in Sections 7.0 and
8.0 of this report.
ASTM Standard Practice E1527-13 defines the term ‘recognized environmental
condition’ as “the presence or likely presence of any hazardous substances or
petroleum products in, on, or at a property: (1) due to any release to the
environment; (2) under conditions indicative of a release to the environment: or (3)
under conditions that pose a material threat of a future release to the environment.
De minimis conditions are not recognized environmental conditions.” Our
conclusion below is inclusive of the migration of hazardous substances or
petroleum products in any form, including, for example, solid and liquid at the
surface or subsurface, and vapor in the subsurface.
f | This assessment has revealed no evidence of recognized environmental
conditions in connection with the subject site.
No further investigation is recommended at this time.
The observations made during our site reconnaissance can be found in Section
4.0. A discussion of the findings and our opinions for the subject site is presented
in Section 8.0. The conclusions are stated in Section 9.0. We recommend the
report be read in its entirety for a comprehensive understanding of the topics
addressed in the report.
1-2

5.0 HYDROGEOLOGY OF SITE AREA
A consideration of surface and subsurface drainage, geology, soil characteristics,
and meteorological factors are helpful in understanding the direction
contaminants, if present, could be transported to, and throughout, the site.
5.1 SURFACE GRADIENTS AND SURFACE WATER
We reviewed a topographic map published by the United States Geological Survey
(USGS) to determine the nominal ground surface elevation and general ground
surface gradient in the area of the site. The map indicated that the site was at an
approximate elevation of 1,500 feet above mean sea level. The natural
topography of the area slopes down toward the southwest at a gradient of
approximately 30 feet per mile.
Our review of the topographic and street maps indicates that some of the natural
flow of surface water in the area of the site would be intercepted or diverted along
the following surface features:
e Surface improvements such as structures and roads in the area
of the site.
The potential for significant quantities of surface water to reach the site, from areas
that are up surface gradient from the site, could not be determined from available
information. Without a detailed topographic survey, the extent of the runoff
contribution from adjacent areas was unknown.
5.2 GROUNDWATER
We reviewed information published by the Arizona Department of Water
Resources (ADWR) to obtain information regarding groundwater conditions in the
vicinity of the site. This information indicates that regionally, the site was located in
the Phoenix Active Management Area (AMA). The AMA was created by the
Arizona Groundwater Management Act of 1980 and includes 5,646 square miles of
central Arizona. The AMA is a geographical area in which intensive groundwater
is needed because of the large and continuous ground water
management
overdraft. Within the AMA the 1980 Act limits withdrawal of groundwater and
requires a forty-five year water conservation and management program.
The main sources of groundwater in the AMA are valley-fill deposits which underlie
both the West and East Salt River Valley sub-basins. The valley-fill deposits are
however, they can be considered as three basic strata
extremely heterogeneous;
5-1

of water bearing units: (1) the lower conglomerate unit, (2) the middle fine-grained
unit, and (3) the upper alluvial unit.
Arizona Department of Water Resources publications indicate that groundwater in
the area of the site occurred on the order of 350 to 450 feet below the ground
surface in 2002.
Regional groundwater elevations and groundwater contours, which were
determined from 2002 Arizona Department of Water Resources (ADWR) data, are
shown on Figure 5. The regional groundwater flow direction in the general area of
the site was not clearly defined. It should be noted that even when regional
groundwater flow is identified, the on-site groundwater flow direction can often vary
from the regional groundwater flow direction due to subsurface strata irregularities,
seasonal groundwater flow changes, and other factors.
Figures 4 and 5 show surface water and groundwater flow maps for the area of the
site.
From a contaminated groundwater perspective, the regulatory agency records
listed in Section 7.0 of this report did not list the subject site address as a source of
groundwater contamination.
5.3 SOIL SURVEY
Soil is the product of soil-forming processes acting on material deposited or
accumulated by geologic forces over relatively long periods of time. The
characteristics of a particular soil at any given point in time are determined by
mineralogical composition, climate, plant and animal life, lay of the land, and the
length of time these forces have acted on the material. Because there are many
variables in this soil formation process, a variety of soil types can be created even
in a relatively small area. For example, there are over three dozen soil types
described in the Maricopa County area.
A Soils Map, Figure 6, for the area of the subject site indicates that the site has
gravelly sandy loam, gravelly sandy clay loam, and gravelly sand soils. A detailed
soils profile can be found in the Regulatory Records Research section in the
Appendix to this report.
The probable soil i type i is presented for the evaluation i 0 f environmental concerns
= structural decisions on which ' would
and to be used as the basis for engineering
require field soil tests.
5-2

GEOCHECK® - PHYSICAL SETTING SOURCE SUMMARY
GROUNDWATER FLOW VELOCITY INFORMATION
Groundwater flow velocity information for a particular site is best determined by a qualified environmental professional
using site specific geologic and soil strata data. If such data are not reasonably ascertainable, it be
may necessary
to rely on other sources of information, including geologic age identification, rock stratigraphic unit and soil
characteristics data collected on nearby properties and regional soil information. In general, contaminant plumes
move more quickly through sandy-gravelly types of soils than silty-clayey types of soils.
GEOLOGIC INFORMATION IN GENERAL AREA OF TARGET PROPERTY
Geologic information can be used by the environmental professional in forming an opinion about the relative speed
at which contaminant migration may be occurring.
ROCK STRATIGRAPHIC UNIT GEOLOGIC AGE IDENTIFICATION
Era: Cenozoic Category: Stratifed Sequence
System: Quaternary
Series: Quaternary
Code: Q (decoded above as Era, System & Series)
Geologic Age and Rock Stratigraphic Unit Source: P.G. Schruben, R.E. Amdt and W.J. Bawiec, Geology
of the Conterminous U.S. at 1:2,500,000 Scale - a digital representation of the 1974 P.B. King and H.M. Beikman
Map, USGS Digital Data Series DDS - 11 (1994).
TC6883044.4s Page 4