S2020025 BOS REPORT.PDF

Maricopa County — Formal (2022-08-17)

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August 17, 2022 
S2020025 
Page 1 of 2 
Report to the Board of Supervisors 
Prepared by the Maricopa County Planning and Development Department 
 
 
 
Board Hearing Date: 
August 17, 2022 
 
Case #/Title:   
 
 
S2020025 – Sonoran Trails Final Plat       
 
Supervisor District: 
2 
 
Applicant/Owners:  
Toll Brothers / Norma & Richard Hoover    
 
Request: 
Final Plat of Sonoran Trails, which comprises 24 residential lots 
and 3 tracts in the R1-18 RUPD zoning district   
 
Site Location: 
Generally located at the NWC of 60th St. and Dynamite Blvd. 
in the Phoenix area.  
 
Site Size: 
Approximately 20 acres 
 
County Island Status: 
No  
Additional 
Comments: 
Sonoran Trails was formerly known as 60th & Dynamite. Staff 
considers this Final Plat to be in substantial conformance with 
the approved Preliminary Plat (S2020013). During the review 
of the infrastructure plans, one lot was removed due to the 
drainage design, staff has determined the reduction of a 
single lot is in substantial conformance with the approved 
preliminary plat. The applicant has routed a copy of the plat 
to all the municipalities within three miles of the subject 
property and to all intended utility providers. There were no 
objections to the request raised by any of these agencies. The 
Final Plat meets all applicable subdivision regulations and 
zoning regulations of the R1-18 RUPD (Z2015061).  
 
Recording fees will be furnished at the time of plat 
recordation.  All requirements of the Maricopa County 
Department 
of 
Transportation, 
the 
Maricopa 
County 
Environmental Services Department, the Flood Control District 
of Maricopa County, and the Drainage Review Division of the 
Maricopa County Planning and Development Department 
have been met. 
  
Recommendation: 
Approval  
 
Presented by: 
 
Rachel Applegate, Senior Planner 
Reviewed by: 
 
Darren Gerard, AICP, Planning Manager   
 
Attachments: 
 
Letter to the Board of Supervisors (1 page)

August 17, 2022 
S2020025 
Page 2 of 2 
 
 
Reduction of Final Plat (4 pages) 
 
 
Narrative Report (4 pages) 
 
 
ADWR Letter & support documents for Expansion of Scottsdale area (23 pages)

4700 E. Southern Avenue, Mesa, AZ 85206     Tel: 480.218.8831  Fax: 480.830.4888 
www.atwell-group.com 
 
 
March 26, 2022 
 
 
Maricopa County 
Board of Supervisors 
301 W. Jefferson Street #10 
Phoenix, AZ 85003 
 
 
RE: 
S2020025 - 60th & Dynamite / “Sonoran Trails” – Single Family Residential Subdivision 
 
Atwell Project Number: 20000655 
 
 
To The Members of The Board, 
 
 
 
With submission of this Final Plat and accompanying documents, all parties herein respectfully 
request approval by the Board of Supervisors.  This request is made jointly by the current property owner 
(R.L. & J.L. Hoover Trust) and the developing party (Toll Brothers: 8767 E. Via de Ventura, Scottsdale, AZ 
85258).  Atwell, LLC has prepared the Final Plat and associated documents as consultant to the developing 
party.  The subject Final Plat has been submitted to surrounding municipalities within a 3-mile range.  
 
 
 
Respectfully, 
ATWELL, LLC 
 
 
 
Michael Park, PE 
Team Leader - LD

27,500 SF

Sonoran Trails 
Final Plat Narrative Report 
 
 
 
4700 E. Southern Avenue, Mesa, AZ 85206     Tel: 480.218.8831  Fax: 480.830.4888 
www.atwell-group.com 
 
Final Plat Narrative Report 
 
For 
 
Sonoran Trails 
 
5928 E. Dynamite Road 
 
Northwest Corner of 60th Street and Dynamite Boulevard 
 
 
Case No.  S2020025

4700 E. Southern Avenue, Mesa, AZ 85206     Tel: 480.218.8831  Fax: 480.830.4888 
www.atwell-group.com 
Purpose of Request 
The prospective development presented herein is being initiated by Toll Brothers as the project developer 
and is proposed as a 24-lot single-family subdivision on an existing property that is approximately 20.06 
gross acres in size (18.64 acres net).  The site is located at the northwest corner of 60th Street and Dynamite 
Boulevard in Cave Creek, which has undergone changes in entitlement in prior years to set the stage for 
the subdivision as shown. 
 
Description of Proposal 
This property has undergone prior planning and approval processes for development but was never 
constructed.  In recent years, the project received jurisdictional approvals to re-zone the property to R1-18 
RUPD designation (Z2015061 and CPA2015008), plat the proposed development (S2015012 and 
S2015021), and had taken improvement plan processing through 2nd review with all applicable agencies 
(Maricopa County, City of Scottsdale and MCDOT).  Through recent years, the property ownership (R.L. & 
N.J. Hoover Trust) has now positioned with Toll Brothers to revive and update the project development in 
hopes to bring the proposed project to fruition. 
 
The overall layout and general conditions are relatively the same as the original project, with some updates 
to reduce construction costs and improve the overall land use to meet current market demands.  With an 
approximate net density of 1.34 DU/AC, the total lot count is at twenty-four (24) single-family lots with the 
remainder of the property made up of three (3) common area tracts to provide for appropriate open space 
and accommodate necessary drainage conditions.  Lot sizes range from just over 15,0000 sq. ft. up to 
around 28,568 sq. ft., with the lot area per a dwelling unit exceeding the minimum of 27,500 sq. ft.  Common 
areas that include private streets and natural washes make up around 8.9 acres of the development area 
and will provide an open and natural feel to the neighborhood.  Said common areas will be managed and 
maintained by an HOA for the subdivision to ensure quality and function. 
 
The total lot count has been reduced from 25 lots, as shown on the Preliminary Plat to 24 lots.  The Final 
Plat and Construction Documents have recently been revised to exclude one lot (Lot #7) as shown on the 
approve Preliminary Plat.  The lot was removed to adhere to Flood Control Requirements for drainage 
improvements.  The removed lot is now included as open space and is being utilized for retention of on-site 
drainage.   
 
With respect to drainage conditions, the site currently sits in a FEMA floodplain classification of ‘AE’.  The 
development is being designed in concert with a floodplain designation ‘AE’ and associated CLOMR/LOMR 
for improvements.  Approvals and permits are expected to coincide with and follow the formal change by 
FEMA.  It is anticipated that the onsite roadways will be designed to stay above the 100-year storm event 
and utilize culverts at all major crossings.  Wash crossings along N. 60th Street will be designed to pass 
nuisance flows beneath the road in culverts while the 100-year storm events will pass over the roadway.  
Historical drainage conditions with offsite impacts traversing through the site will continue to be routed 
through the property in the same manner and remain in a natural appearance. 
 
Relationship to Surrounding Properties 
The subject property is made up of a single parcel just under 20 acres in size, located at 5928 E. Dynamite 
Boulevard, being at the northwest corner of E. Dynamite Boulevard and N. 60th Street in Cave Creek, but 
actually resides within Maricopa County jurisdiction.  The City of Scottsdale is located south of Dynamite 
Boulevard, with the jurisdictional boundary line being the northerly right-of-way of Dynamite.  Surrounding 
properties in the area are most commonly made up of larger, rural residential lots that remain un-subdivided.  
These types of properties border the development on the west, north and south (across Dynamite) sides.  
Several single-family subdivisions are located in the vicinity which are similar in type and character to this 
proposal, although much larger in overall size.  While the jurisdictions vary somewhat in the vicinity, the 
general zoning designations of RU-43/R1-43 and R1-35 are most typical.

4700 E. Southern Avenue, Mesa, AZ 85206     Tel: 480.218.8831  Fax: 480.830.4888 
www.atwell-group.com 
 
 
Location and Accessibility 
The property is situated on the north side of Dynamite Boulevard approximately 1.5 miles west of Scottsdale 
Road and about 1.5 miles east of Tatum Boulevard.  While addressing and access to the existing property 
is from Dynamite Blvd., the new subdivision’s primary gated entry will be placed off of 60th Street.  It should 
be noted that the rural character of the area lacks sidewalks for general pedestrian connectivity, therefore 
vehicular access is the primary means of ingress/egress.  Through traffic impact analyses associated with 
the project, it was determined that road widening and some lane changes are necessary to alleviate 
potential concerns with general traffic and access.  Currently, Dynamite Blvd. is a 2-lane road which widens 
periodically to allow for necessary turn lanes.  Dynamite Blvd. will be widened adjacent to the project to 
provide an eastbound left turn lane on to 60th Street, and utilize tapers to tie the lanes to the existing 
configurations.  The southbound approach of 60th Street to the intersection with Dynamite is implementing 
a widened throat to provide dedicated through/turn lanes onto Dynamite. 
 
Circulation System 
The aforementioned roadway changes will be made possible by new right-of-way dedications by the subject 
development.  Frontage along E. Dynamite boulevard is being dedicated to a 55’ half-street right-of-way 
and frontage along N. 60th Street will receive a 20’ right-of-way dedication to arrive at a 30’ half-street width. 
 
As mentioned prior, the development proposes a gated entry (with turnaround) from 60th Street that serves 
as the primary ingress/egress for the subdivision.  Once past the entry gates, private streets provide 
vehicular access through the neighborhood.  Said streets consist of a 40’ wide tract and a 26’ wide paved 
road with curbing.  From the entry gate, a cul-de-sac bears southwesterly to access Lots 1-6.  Continuing 
past the cul-de-sac entry leads to Lots 7-25 once crossing over to the north side of a main wash.  This 
portion of the site splits to a contained loop providing alternate paths to the lots in the northerly portion of 
the development.  All onsite private roadways and improvements to 60th Street will comply to MCDOT 
standards.  A secondary emergency access point is provided from 60th Street between Lots 19 and 20.  
This access point is anticipated to be somewhat indiscreet and serve for emergency purposes only.  The 
path will be constructed with a suitable, stabilized all-weather surface which is expected to be a form of 
compacted aggregate to match the aesthetic and landscape character at the site.  Access will be restricted 
at the emergency drive with decorative gates and appropriate Knox locks. 
 
Development Schedule 
Construction of the subdivision is not currently anticipated to be considered a phased development.  A 
conventional approach is expected to begin with site clearing and soil preparation, followed by mass 
grading, utilities and drainage infrastructure, roadways, lot pad preparation and site walls, then moving to 
home construction when permitted.  Speculatively, it is anticipated that the general site work will be 
completed within 6 to 12 months after beginning and transition to home product thereafter. 
 
Community Facilities and Services 
School district, parks, amenities etc. 
Due to the size and character of the development, the site is being planned to provide smaller, natural park 
type amenities for residents.  These are designed to mesh with and enhance the natural setting of the area 
while providing walking paths and dedicated scenic view settings.  In addition, the subdivision will provide 
fencing for home lots and some portions of the property for general security while maintaining an open feel 
that connects to the surrounding neighborhood. 
 
The property lies within the Cave Creek Unified School District.  While some charter schools are located 
nearby, the delineated boundaries of the district indicate Desert Sun Academy Elementary School, Sonoran 
Trails Middle School and Cactus Shadows High School to be the designated schools for students that may 
reside in the subdivision.

4700 E. Southern Avenue, Mesa, AZ 85206     Tel: 480.218.8831  Fax: 480.830.4888 
www.atwell-group.com 
 
While there is no shortage of activities and amenities in the area to sustain almost any lifestyle, there are 
some better-known destinations to make note of.  Golf courses are a common sight in the greater Phoenix 
area, and there are several within close proximity, including Troon North and Tatum Ranch golf clubs.  Many 
common commercial uses are found within a few miles of the property.  There are two larger regional 
shopping supercenters found just 5 miles south of the development, being Desert Ridge Marketplace and 
City North.  These facilities are home to many common retailers and food establishments found in the 
greater Phoenix metropolitan area. 
 
Public Utilities and Services 
Wet utilities (water and sewer) for the property are served by the City of Scottsdale.  Water is available to 
the site via an 8” main in E. Dynamite Boulevard, a 12” main located in N. 60th Street, and a 6” stub located 
midway along the west property line.  It is anticipated that the onsite water system will consist of an 8” main 
that maintains a “looped” network by connecting to both of the available offsite water mains for redundancy.  
Sewer is served by an 8” offsite gravity main located south of the site in E. Dynamite Boulevard.  The 
proposed onsite private collection system is expected to consist of a combination of 6” and 8” gravity mains 
that will connect to the offsite main near the southwest corner of the site.  Plans will be submitted to the 
City of Scottsdale for approval and permitting of both the water and sewer designs for the site. 
 
Other public utilities and service providers include APS for electrical, Southwest Gas, with cable and 
telephone provided by CenturyLink and Cox Communications. Will serve letters have been obtained for 
these providers.  Additionally, refuse/recycle collection will be handled by Republic Services. 
 
Due to the property being located within Maricopa County, Emergency services for the area are provided 
by Rural Metro Fire Department (stations #821, 825 or 826) and the Maricopa County Sherriff’s Office 
(District 4).