S2019041 BOS REPORT.PDF

Maricopa County — Formal (2020-09-02)

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September 2, 2020 
S2019041 
Page 1 of 2 
Report to the Board of Supervisors 
Prepared by the Maricopa County Planning and Development Department 
 
 
 
Board Hearing Date: 
September 2, 2020 
 
Case #/Title:   
 
 
S2019041 – Zanjero Trails Parcel 34A       
 
Supervisor District: 
4 
 
Applicant/Owner:  
HilgartWilson, LLC / Maricopa Water District   
 
Request: 
Replat of Zanjero Trails Parcel 34 for Parcel 34A which consists 
of 115 residential lots and 15 tracts in the R1-6 RUPD zoning 
district   
 
Site Location: 
Generally located at the northeast corner of Montebello Ave. 
alignment and Jackrabbit Trail (195th Ave. alignment) in the 
Buckeye planning area 
 
Site Size: 
Approximately 26 acres 
 
County Island Status: 
City of Buckeye  
Additional 
Comments: 
Staff considers this replat to be in substantial conformance 
with the approved Zanjero Trails Parcel 34 Preliminary Plat 
(S2019021) and associated Infrastructure Plat (S2019040). 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 plat meets 
all applicable subdivision regulations and zoning regulations 
of the R1-6 RUPD (Z2018059).  
 
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

September 2, 2020 
S2019041 
Page 2 of 2 
Attachments: 
 
Letter to the Board of Supervisors (1 page)  
 
 
Reduction of Replat (6 pages) 
 
 
Narrative Report Summary (9 pages) 
 
 
ADWR Certificate (To be provided later under separate cover)

2141 East Highland Avenue, Suite 250 ▪ Phoenix, Arizona 85016 ▪ 602-490-0535 
 
 
 
1    of    1 
 
June 10, 2020 
 
 
Maricopa County Board of Supervisors 
301 W. Jefferson, 10th Floor  
Phoenix, AZ 85003 
 
 
RE:  
Re-Plat of Zanjero Trails Infrastructure Plat – Zanjero Trails Parcel 34A 
HILGARTWILSON Project No.:  2001 
 
 
Dear Board, 
 
 
This letter is to request the approval of the Re-Plat of Zanjero Trails Infrastructure Plat – Zanjero Trails Parcel 
34A. 
 
This parcel is being subdivided by: 
SBH ZANJERO TRAILS L.P. 
6720 N. Scottsdale Road, Suite 250 
Scottsdale, AZ 85253 
 
The plat was prepared by: 
HILGARTWILSON, LLC 
RLS# 32222: Brian J. Benedict 
 
This project is within 3 miles of the City of Buckeye, the City of Goodyear and the City of Glendale and the 
plat has been provided to them.  
 
Thank you, 
Diego Ortiz, P.E.  
 
Respectfully Submitted,   
HILGARTWILSON, LLC

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
RE-PLAT
OF
ZANJERO TRAILS
INFRASTRUCTURE PLAT -
ZANJERO TRAILS PARCEL 34A
MARICOPA COUNTY, ARIZONA
CASE NUMBER S2019041
6/5/20

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
6/5/20

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
6/5/20

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
6/5/20

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
6/5/20

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
6/5/20

RE - PLAT NARRATIVE 
FOR 
ZANJERO TRAILS - PARCEL 34A 
   SOUTHEAST OF BETHANY HOME ROAD AND 195 TH AVENUE 
 
MARICOPA COUNTY, ARIZONA 
CASE #S2019041 
 
 
 
Original: November 27, 
2019 
Revised: April 17, 
2020 
Revised: June 2, 2020 
 
 
 
 
 
 
 
 
Prepared For: 
 
SBH Zanjero Trails LP 
6720 N Scottsdale 
Road, Suite 250 
Scottsdale, Arizona 
85253 
 
 
 
 
 
 
 
Prepared by: 
 
HILGARTWILSON 
2141 E. Highland 
Avenue, Suite 250 
Phoenix, AZ  85016 
Phone:  (602) 490-0535

ZANJERO TRAILS – PARCEL 34A 
 
 
Re - Plat Narrative 
 
Table of Contents 
 
1.0 
PURPOSE OF REQUEST ................................................................................................................ 1 
2.0 
DESCRIPTION OF PROPOSAL ....................................................................................................... 1 
3.0 
RELATIONSHIP TO SURROUNDING PROPERTIES ........................................................................ 2 
4.0 
LOCATION AND ACCESSIBILITY .................................................................................................... 3 
4.1 
Circulation .......................................................................................................................... 3 
4.1.1 Vehicular ............................................................................................................................. 3 
             4.1.2     Ultimate Roadway Network ............................................................................................... 3 
4.2 
Pedestrian .......................................................................................................................... 4 
5.0 
DEVELOPMENT SCHEDULE .......................................................................................................... 4 
6.0 
COMMUNITY FACILITIES AND SERVICES ..................................................................................... 4 
6.1 
Schools ............................................................................................................................... 5 
6.2        Recreational Amenities ...................................................................................................... 5 
6.3       Parcel Amenities ................................................................................................................. 5 
6.4 
Police and Fire Protection ................................................................................................. 5 
7.0 
PUBLIC UTILITIES AND SERVICES ................................................................................................ 5 
7.1 
Water Facilities ................................................................................................................... 6 
7.2 
Wastewater Facilities ......................................................................................................... 6 
7.3 
Dry Utilities ......................................................................................................................... 7 
7.4 
Drainage ............................................................................................................................. 7 
8.0 STIPULATION COMPLIANCE ................................................................................................................ 8 
8.1       Conformance to Development Master Plan (DMP) amendment (DMP2018005) ......... 8 
8.2        Conformance to zoning stipulations (Z2018059) ........................................................... 9 
APPENDIX A: FIGURES ................................................................................................................................. 
APPENDIX B: ZONING STIPULATIONS (ZONING CASE Z2018059) ............................................................ 
                      DEVELOPMENT MASTER PLAN (DMP) AMENDMENT (CASE NUMBER DMP2018005) ...... 
 
 
Tables 
 
Table 1– Approved R1-6 RUPD Development Standards Comparison 
 
Appendices 
 
Appendix A – Figures 
Appendix B – Zoning Stipulations (Z2018059, DMP amendment DMP2018005) 
 
Figures 
 
Figure 1 – Vicinity Map 
Figure 2 – Overall Master Plan

1.0 
PURPOSE OF REQUEST 
 
Zanjero Trails – Parcel 34, part of Zanjero Trails Development Master Plan, is a proposed 
single family residential subdivision located on approximately 170 gross acres. The Project 
area is generally situated at the southeast corner of Bethany Home Road and 195th Avenue 
alignments (Jackrabbit Road) in unincorporated Maricopa County. Refer to Figure 1 – Vicinity 
Map for Project location. It should be noted that the Beardsley Canal (APN: 502-28-007), 
which is currently owned by the Maricopa Water District, is included in the 170 acres. In 
order to be consistent with the RUPD, the area that is occupied by the Beardsley Canal (10 
acres) has been included in the density calculations and the parcel gross area. 
  
The proposed development is consistent with the Development Master Plan (DMP) 
amendment (DMP 2018005) and Residential Unit Plan of Development (RUPD) amendment 
(Z2018059) approved by the Board of Supervisors on December 12, 2018.  The DMP 
revised the land use designation for Parcel 33 (14.4 acres) from ‘Commercial Retail Center’ 
to ‘Single Family Residential (2.5 d.u. /ac.) and the RUPD revised the zoning designation 
from C-2 CUPD PAD to R1-6 RUPD PAD & amended the R1-6 RUPD standards for Parcel 34. A 
preliminary plat for the project (S2019021) complying with the approved RUPD, DMP and 
associated stipulations has been submitted to the Planning and Zoning Commission.  
 
The overall development plan is depicted on Figure 2 – Overall Master Plan. This narrative is 
for Parcel 34A of Zanjero Trails – Parcel 34. Zanjero Trails - Parcel 34 consists of final plats 
for parcel 34A, 34B, 34C, 34D, 34E and 34F, as well as an infrastructure plat. The 
infrastructure plat will dedicate the required easements and right-of-way for Montebello 
Avenue (Collector Road) and half street right-of-way for 195th Avenue (Jackrabbit Trail), from 
the southern boundary to the northern entry way. The remaining of the 195th Avenue half 
street right-of-way and southern half street right-of-way for Bethany Home Road will be 
dedicated with the plats pertaining to Parcels 34E and 34F, which are to be prepared and 
submitted in the future. The final plat for Parcel 34A will be a re-plat of the Infrastructure 
Plat. The table below provides number of lots and tracts for the Parcel 34A final plat: 
 
Parcel Summary 
 
Parcel 
 
Use 
Minimum 
Lot Width 
Minimum 
Lot Area 
Typical Lot 
Size 
# of 
Lots 
# of 
Tracts 
 
34A 
 
 
R1-6 RUPD 
 
45’ 
 
5,175 SF 
 
45’ X 115’ 
 
115 
 
15 
 
 
2.0 
DESCRIPTION OF PROPOSAL 
 
This narrative is for the final plat of Parcel 34A of Zanjero Trails – Parcel 34. The plat will 
identify the perimeter boundary, rights-of-way, public utility easements (PUEs), site visibility 
triangles, vehicular non-access easements, and lots within the plat. The final plat for Parcel 
34A will be a re-plat of the parcel defined on the Infrastructure Plat of Zanjero Trails – Parcel 
34 (S2019040), which has been previously submitted to Maricopa County. Zanjero Trails 
Parcel 34A is included within the Zanjero Trails Parcel 34 RUPD (Case # Z2018059). The 
RUPD table is included below:

Table 1 – R1-6 RUPD Development Standards Comparison  
Items in bold are changes from the base zoning 
REGULATION 
BASE ZONING DISTRICT 
REGULATIONS (R1-6) 
PROPOSED ZONING 
DISTRICT REGULATIONS 
(R1-6) 
Max. Height 
30' or 2 stories 
30' or 2 stories 
Min. Front Yard 
20' 
20' *(1) 
Min. Side Yard 
5' 
5' 
Min. Street-side Yard 
10' 
10' 
Min. Rear Yard 
25' 
15' 
Lot Area (min) 
6,000 sq. ft. 
5,175 sq. ft.  
Min. Lot Width 
60' 
45'  
Lot Area per Dwelling Unit 
(min) *(2) 
6,000 sq. ft. 
6,500 sq. ft.  
Max. Lot Coverage 
50% 
55% *(3) 
Parking Spaces 
2/du 
2/du *(4) 
Max. Privacy Wall Height 
6' 
6' privacy wall w/ max. 7' 
column above a max. 3' 
retaining wall 
Maximum Height of 
Subdivision Monument 
6' 
10' Primary 
6'-8" Secondary 
Maximum Subdivision Sign 
Area (sign area as defined by 
MCZO 1408.1) 
32 sq. ft., 6' high with the 
base at least 1/2 the width 
70 sq. ft. Primary  
24 sq. ft. Secondary  
Notes: 
(1) Front yard setback may be reduced to 10' for side entry garages or forward living 
spaces. 
(2) Lot Area per D.U. =total area of lots and open spaces, excluding all public and private 
streets, divided by the total number of lots. This shall only apply to single family residential 
lots. 
(3) 55% for 45’ wide lots in Parcel 34. 
(4) The standard 2 parking spaces in the garage of each lot meet the MCZO of 9’ X 18’ per 
space. 
 
The proposed improvements for Parcel 34A will dedicate a 2-foot sewer easement behind 
the 8-foot PUE for the installation of the sewer service valve per the agreement between the 
developer and the utility service provider and will be identified in the plat. All of the proposed 
residential lots within the Parcel 34A development will allocate two standard parking spaces 
in the garage and will be designed to meet the MCZO standard of 9’ x 18’ per space. 
3.0 
RELATIONSHIP TO SURROUNDING PROPERTIES 
 
Zanjero Trails - Parcel 34 lies within unincorporated Maricopa County and is located at the 
southeast corner of Bethany Home Road and 195th Avenue. The adjacent property to the 
north is undeveloped desert land that is owned by the Maricopa County Flood Control 
District, to the northeast is the Canyon View High School, and along the eastern boundary is 
the Beardsley Canal which is owned and operated by Maricopa Water Conservation District

No. 1 (MWD). Immediately east of the Canal is Zanjero Trails Phase I, which is currently being 
developed by SBH Zanjero Trails, LP. Along the southern boundary lies Jackrabbit Estates. 
The adjacent property to the west within the City of Buckeye is currently being developed as 
Canyon Views – Phase 1 – Unit 1, a single family residential development. 
 
Parcel 34A is bound by Phase 2 - Parcel 34F to the north, Montebello Avenue (Collector 
Road) to the south, Parcel 34D to the east, and 195th Avenue (Jackrabbit Trail) to the west. 
Refer to the attached Vicinity Map and Overall Master Plan, included in Appendix A.  
 
4.0 
LOCATION AND ACCESSIBILITY 
 
The infrastructure plat will dedicate the required easements and right-of-way for Montebello 
Avenue (Collector Road) and half street right-of-way for 195th Avenue (Jackrabbit Trail), from 
the southern boundary to the northern entry way. The remaining right-of-ways for 195th 
Avenue and Bethany Home Road will be dedicated on future plats (Parcel 34E and Parcel 
34F) for the fronting half street. 
 
The main traffic access to the community is provided from 195th Avenue (Jackrabbit Trail) 
with two access points on the west side of the community, Montebello Avenue and Rancho 
Drive. The Loop 303 freeway will also provide an important transportation corridor for 
Zanjero Trails Parcel 34, as it is located three miles east. Additionally, Interstate 10 is 
approximately three miles to the south of the Zanjero Trails site. As it provides connection 
into downtown Phoenix and beyond, I-10 will also serve as an important transportation 
corridor for the future development. 
 
4.1 
Circulation 
 
4.1.1  
Vehicular 
 
A Traffic Impact Study (TIS) for Zanjero Trails Parcel 34 has been 
prepared by CivTech, dated August 2019. The TIS prepared by 
CivTech analyzes the impacts of the Zanjero Trails Parcel 34 
proposed land use plan on the transportation network in the vicinity 
of the site. According to the TIS, Zanjero Trails Parcel 34 will generate 
an estimated total of 5,530 trip ends per day when fully developed. 
This traffic disperses in such a way that it can be adequately 
accommodated by the internal and connecting arterial system. The 
TIS determines the number of lanes required at project build-out for 
major 
streets 
serving 
the 
development 
and 
provides 
recommendations related to traffic signage, signalization and turn 
movements. Below is a summary of the recommended improvements 
to the connecting roadway system in conjunction with the Zanjero 
Trails Parcel 34 development. 
 
4.1.2 
 
Ultimate Roadway Network 
 
• 
195th Avenue (Jackrabbit Trail) will provide primary access to the site 
and will operate adequately in the future with two through lanes in 
each direction and a continuous two way left turn lane.

• 
Camelback Road is south of the Project, adjacent to Jackrabbit 
Estates, and it is a three lane roadway classified as Major Arterial 
with one lane in each direction of travel and a continuous two-way 
left-turn lane. 
 
• 
Bethany Home Road will operate adequately in the future with two 
through lanes in each direction and a two way left turn lane. The 
cross section should follow that of an Urban Minor Arterial road as 
specified by the MCDOT Roadway Design Manual.  
 
• 
Montebello Drive will be designed as a Minor Collector road. As such 
the roadway will have one lane in each direction on a total pavement 
width of 40 feet. The total right-of-way for the cross section is 80 feet 
per MCDOT standards. 
 
• 
The remaining roadways will be designed as local streets per MCDOT 
standards. 
 
• 
Traffic signals are recommended at the following locations by Year 
2022 in order to effectively move traffic volumes: 
 
• 
195th Avenue and Camelback Road 
• 
Bethany Home Road at Beardsley Canal Road 
 
• 
A traffic signal should not be installed until one or more of the traffic 
signal warrants of the Manual on Uniform Traffic Control Devices are 
met. 
  
4.2 
Pedestrian 
 
 
Sidewalks on both sides of arterial and collector street right-of-ways will provide 
pedestrian circulation. On arterial streets, the pedestrian paths/sidewalks will be set 
back from the curb and gutter and buffered by a landscape strip to separate the 
various modes of transportation, i.e., auto, bicycle, pedestrian. Pedestrian circulation 
will also be accommodated by sidewalks on all residential streets providing 
connections between the park site, open spaces, and neighborhoods. 
 
5.0 
DEVELOPMENT SCHEDULE 
 
The Project will be developed in two phases. Actual timing of the phases will depend on 
market conditions and absorption. Parcel 34A will be developed within the first phase of 
development. 
 
6.0 
COMMUNITY FACILITIES AND SERVICES 
 
All necessary community facilities to service the Project, such as parks and amenities, will be 
provided by the development.

6.1 
Schools 
 
Zanjero Trails is located entirely within the Litchfield Elementary and Agua Fria Union 
High School District’s Jurisdictional boundaries. There will be no educational facilities 
within Zanjero Trails – Parcel 34. 
 
6.2 
Recreational Amenities 
 
The Project will preserve a large amount of open space area with an amenity package 
designed for the residents. A 3.3 acre park centrally located provides a core of 
activities that foster community pursuits and social interaction. This community open 
space will be constructed within the first phase of development to be enjoyed by 
future residents and as a selling feature of the community, as conceptually shown on 
Figure 2.  
 
6.3      Parcel Amenities 
  
Parcel Parks will be located in strategic open space areas where they may be most 
easily accessed by homeowners. Parcel Parks will include improvements such as 
pathways, playgrounds, ramadas, and useable turf areas. These parks are intended 
to be more heavily used by residents of the development for active play and 
gatherings. Passive Parks will be located in open spaces that serve as retention 
areas and connections throughout the development. Passive Parks will include 
improvements such as pathways and useable turf areas.  
 
6.4 
Police and Fire Protection  
 
Zanjero Trails - Parcel 34 is located within the Maricopa County Sherriff’s Office 
(MCSO) service area. The nearest Maricopa County Sheriff’s Department office are 
District Facility III, located at the southeast corner of Dysart and Bell Roads and 
District Facility II, located at the northeast corner of Dysart and Van Buren.  
 
Zanjero Trails – Parcel 34 is located within the Buckeye Valley Fire District service 
area for fire service. Will serve letter from Buckeye Fire District is attached at the end 
of this narrative. 
 
7.0 
PUBLIC UTILITIES AND SERVICES 
 
All necessary utilities to serve the Project are currently available or will be brought to the site 
during development. Utilities and services for the Project will be provided by the following 
providers. A utility commitment table is provided below listing each of the utility providers: 
 
Utility Commitment Table 
Utility 
Provider 
Water 
EPCOR Water 
Sewer 
Liberty Utilities 
Electric 
APS 
Telephone 
Century Link 
Gas 
Southwest Gas Company 
Cable TV 
Cox Communications

Police 
Maricopa County Sheriff's Department 
Fire 
Buckeye Valley Fire District 
Refuse 
Waste Management 
School District 
Litchfield Elementary School District 
Agua Fria Union High School District 
 
7.1 
Water Facilities 
 
The Project is located within EPCOR Water’s Certificate of Convenience and Necessity 
(CCN) for water service and is within Zone 2 of EPCOR’s Agua Fria District.  The 
Project will be served by EPCOR’s Water Plant #12, located approximately 2.5 miles 
southeast of the Project, south of Camelback Road and east of Citrus Road.  Water 
Plant #12 serves two pressure zones, Zone 1 and Zone 2, with two separate trains of 
booster pumps for each zone.  The Project will be served by the Zone 2 pumps which 
will ultimately include five pumps, each having a flow of 1,500 gpm and a total 
dynamic head of 243 feet (approximately 105 psi).  Water Plant #12 also contains 
one 1.5 MG storage reservoir, and the site has room for an additional two storage 
reservoirs of the same size for a projected ultimate build-out storage capacity of 4.5 
MG.  
 
Existing water infrastructure within the Project vicinity includes 12-inch water lines 
along Bethany Home Road (east of the Beardsley Canal), Camelback Road, and the 
Beardsley Canal, parallel to the Project’s eastern boundary.  There are also existing 
8-inch and 12-inch water lines located within the Jackrabbit Estates community and 
Zanjero Trails Parcels 35-45 located immediately south and east of the Project, 
respectively.   
  
Proposed internal waterlines layout for the water distribution system consists of 8-
inch mains connecting the existing line in the Beardsley Canal. There will be no 
extensions within Bethany Home Road or 195th Avenue.   
 
7.2 
Wastewater Facilities 
 
The Project is located within Liberty Utilities’ (Litchfield Park Service Company) CC&N 
for wastewater service.  The site was also previously added to Liberty’s MAG 208 
area to treat wastewater flows through a MAG 208 Amendment for an area known as 
the Northwest Group territory.  Wastewater flows from the Project will be routed to 
Liberty’s Palm Valley Water Reclamation Facility (WRF), located along McDowell Road 
and west of Litchfield Road, for treatment.  The Palm Valley WRF has a treatment 
capacity of approximately 4.1 MGD and is currently being expanded for increased 
treatment capacity. 
 
The closest wastewater infrastructure within the Project vicinity consists of an 
existing 12-inch gravity sewer main that extends west along Camelback Road and 
terminates at a manhole located just west of the Beardsley Canal.  Another stub is 
provided at the northeast corner of the Jackrabbit Estates project.  In order to provide 
sewer to this Project, the sewer main that extends west along Camelback Road and 
terminates at a manhole located just west of the Beardsley Canal will have to be 
extended with an 8-inch sewer line. The Jackrabbit Estates existing line may not be 
used as it does not meet Liberty’s flow requirements and the Project does not lie 
within their CC&N boundary.

7.3 
Dry Utilities 
 
Utility services to Zanjero Trails – Parcel 34 will include: phone service by CenturyLink 
or Cox Communications, natural gas service by Southwest Gas, electrical service by 
APS and cable television by CenturyLink or Cox Communications. Will serve letters 
will be provided from each. 
 
7.4 
Drainage 
 
The area surrounding the Project generally slopes to the southeast at a slope of 
1.2%. The Project is located near three regional drainage structures, the White Tanks 
Flood Retarding Structure #3 (FRS No. 3) is  located northwest of the Project, the FRS 
No. 3 Outfall Channel is adjacent to the western boundary, and the Beardsley Canal 
Detention Basin System is adjacent to the eastern boundary. Both the FRS No. 3 and 
the Outfall Channel intercept all flows coming from the White Tank Mountains 
located to the north and west. A small portion of flows generated north of the 
Bethany Home Road alignment impact the Project from the north. The only significant 
offsite flows currently impacting the Project are those being conveyed through the 
Beardsley Canal.  
 
A LOMR was prepared by HILGARTWILSON and subsequently approved by FEMA in 
March 2018 for Zanjero Trails Phase 1C, which included the Beardsley Canal 
Detention Basin System adjacent to the site. A portion of the southernmost detention 
basin is located within the Project. Due to the development of the Project, runoff 
reaching the detention system will be reduced. Consequently, a portion of land will be 
recovered from the basin for the Project’s development. The recovery necessitating 
processing of a CLOMR and eventually a LOMR has been initiated. A CLOMR was 
prepared for the Zanjero Trails - Parcel 34 development by HILGARTWILSON in 
August 2019 and was approved by FEMA on January 10, 2020 (Case No. 20-09-
0110R). As mentioned previously, this CLOMR/LOMR process modifies the floodplain 
delineated by the Zanjero Trails- Phase 1C LOMR approved by FEMA. 
 
Initial estimates for the offsite flows affecting the Project from the northwest 
boundary were referenced from the Zanjero Trails Phase 1C LOMR. The offsite 
drainage impacts will be managed around the Project according to the Maricopa 
County design guidelines. A channel running along the northern side of the site will 
be used to convey offsite stormwater flows to the Beardsley Canal Detention Basin 
System maintaining existing drainage patterns.  
 
Onsite flows will be conveyed to retention basins throughout the Project in 
appropriate locations. Retention volume equivalent to the 100-year, 2-hour storm 
runoff will be provided for all developed portions of the Project. Retention basins will 
generally be designed with 4:1 slopes and a depth of 4 feet, 3 feet of storage and an 
additional foot of freeboard, and will dewater within the 36-hour limit. Additional 
safety measures will be implemented if retention basins exceed the maximum slope 
and depth. Existing flow patterns will be maintained, while offsite flows will not be 
comingled with onsite flows. All drainage design for the Project will be in 
conformance with the Planning and Development standards for Maricopa County and 
Section 1205 of the Maricopa County Zoning Ordinance.