EXHIBIT B PLAN OF DEVELOPMENT - FISH CREEK - V2.DOCX

Exhibit B
PLAN OF DEVELOPMENT
Fish Creek - Maricopa County Communications Site Upgrade
I. Introduction
This Plan of Development (POD) describes the procedures proposed by the County of Maricopa,
for construction of a new communications facility adjacent to the existing Fish Creek Hill rest
area off State Road 88 (Apache Trail) as part of the Maricopa County P25 Upgrade project.
Maricopa County has identified the need for an upgrade to their existing critical communications
systems infrastructure. Key to this upgrade is the construction of a new communications facility.
A. General Description
Maricopa County and Motorola Solutions, Inc. are planning a Public Safety P25 Radio System
Infrastructure upgrade project located at the Fish Creek Hill Rest Area on State Route 88, Mile
Post 222 Top/Fish Creek Hill Rest Area, Apache Trail, Maricopa County, Arizona. The project
area is located on U.S. Forest Service Tonto National Forest (TNF) land administered by the Mesa
Ranger District, in the Southeast Quarter of the Northwest Quarter of Section 10, Township 2
North, Range 10 East, Gila and Salt River Baseline and Meridian, Maricopa County, on the U.S.
Geological Survey (USGS) Horse Mesa Dam, Arizona, 7.5-minute quadrangle. The proposal
includes the construction of a new telecommunications facility: new 30-foot tall monopole with
Natina finish, 14’ x 28’ equipment building, 45kW backup generator, and retaining wall. The new
equipment building will match the color of the existing rest area’s restrooms and will house the
new communications equipment and the new 45kW generator. Construction actives will disturb
approximately 0.25 acres of land. Access to the site will be off of State Route 88 and the existing
rest area parking lot. No improvements or additional road construction is planned as part of this
Plan of Development. Any pavement that is damaged during construction will be adequately
repaired. All work at the site will be performed around busy visitor times per District direction.
II. Vegetation Treatments
A. Vegetation Description
The project area is located at an elevation of approximately 2,900 feet above mean sea level, within
the Arizona Upland Subdivision of the Sonoran Desertscrub biotic community as described by
Brown (1994). Vegetation on-site is a mix of native and non-native plant species. Dominant
vegetation in the project area is the non-native red brome (Bromus rubens) with other non-native
species including Asian mustard (Brassica tournefortii) and London rocket (Sisymbrium irio).
Native species on-site include Florida hopbush (Dodonaea viscosa), fairyduster (Calliandra
eriophylla), cactus apple (Opuntia engelmannii), common sotol (Dasylirion wheeleri), purple
threeawn (Aristida purpurea), buck-horn cholla (Cylindropuntia acanthocarpa), catclaw acacia
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Exhibit B
(Senegalia greggii), and velvet mesquite (Prosopis velutina). Project activities are not anticipated
to involve vegetation removal. However, in order to minimize impacts to vegetation during project
construction the staging areas will be located in previously disturbed areas, and kept as small as
possible. Also, erosion and drainage control measures will be taken during the project to prevent
the introduction of sediment-laden runoff into any adjacent surface waters, and to prevent any
impact to surface water quality. The exposed soils will be stabilized, particularly on slopes, with
native vegetation as soon as possible to prevent any excess erosion. Because the proposed ground
disturbance (both temporary and permanent), in areas with native vegetation, will remain at or
below 0.25 acres, compliance with the Arizona Native Plant Law regulations will not be required.
However, in order to minimize the potential introduction or spread of exotic invasive species,
including aquatic and terrestrial plants, animals, insects and pathogens we plan to take precautions
with all equipment utilized in the project activities before entering and leaving the site.
B. Clearing Prior to Construction
Any vegetation within the proposed grading area will be grubbed as part of the construction
process. With the planned area of work already disturbed, minimal amounts of organic debris
disturbance is anticipated. Any spoils obtained from the clearing process will be removed from the
site.
C. Routine Vegetation Maintenance
Maricopa County will maintain the interior of the compound according to its existing vegetation
management practices upon the completion of the project.
III. Construction of Facilities
Motorola Solutions, Inc. will be performing the construction of the new communications facility
Maricopa County in accordance to the plans submitted to TNF for approval. A copy of the plans
is attached as Exhibit A.
A. Equipment
Equipment to be used during the construction of the new communications facility will include
the following:
 500 gallon water trailer
 Excavator
 Lowell or reach fork
 Compactors
 Augers for fence posts
 Hand and power tools
 Crew vehicles
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Exhibit B
 Trailers
 Crane for placement of Cabinets & Generator
B. Design Characteristics
The following table represents the design characteristics to be adhered to during construction.
Table 1. Design Characteristics
Design Characteristics
Enclosure type Open Compound
Enclosure Dimensions 17’-8”'x58'-7” (irregular)
Fence Length No Fence
Fence Area ~1,062 square foot
Enclosure type N/A
Tower type Monopole with Natina finish
Tower Height 30
Shelter Type Custom Building to match existing building
Shelter Dimensions 14’ x 28'
Generator Type Diesel
Generator Size 45kW
Fuel Storage Type Belly Tank
Fuel Storage size 211 gallon
Number of Ground rods 11
Utility type Underground electric
Enclosure access N/A
IV. Construction Sequencing and Timing
Construction will commence within 2 weeks of receiving the NTP and approval from TNF. The
construction on the new communications facility will last for an estimated 8 weeks.
V. Construction Methodology
Construction of the new communications facility will generally proceed as follows:
 Mobilization of excavation equipment to site
 Establish rough grade
 Construction staking for major components
 Excavation and placement of monopole foundation
 Excavation and placement of custom build shelter and generator foundation
 Excavation and placement of site grounding
 Construct Build in Place communications shelter
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Exhibit B
 Offload and set monopole and generator with diesel belly tank
 Install antenna and line on new monopole
The general site clear and grub include the setting of the site rough grade, as well as establishing
the control points necessary to accurately locate fence corner posts and shelter locations.
Once the site is construction staked, excavation will commence on the tower, custom build shelter
and generator foundation. This will be multiple pads and will be placed on the same day to
minimize concrete truck mobilizations.
After the foundations are installed and backfilled; excavation will begin for the sites grounding
and utility trenches. A ground ring and leads will be placed around each major component (tower,
shelter) and tied to all ancillary site components, providing a single grounding system for the entire
site. The utility trench and conduit will be inspected prior to backfill and compaction.
After the grounding system sub-grade components have been installed, the delivery of the
monopole and generator will also occur to best utilize the crane on site. The crane is expected to
be on site for a single work day and will not be kept overnight. Electrical service will be supplied
to the front of the custom build located on the outside of the building once all of the inspections
and coordination with SRP has occurred. The equipment shelter will then be commissioned by
testing the electrical components, including the HVAC units and ATS/Generator.
Any existing pavement that might have been damaged during construction will be adequately
repaired.
VI. Mitigation Actions – Resource Concerns
The following mitigation measures were developed to reduce, avoid, and/or compensate for the
potential impacts the proposed activities may cause. Mitigation measures would be implemented
during construction and post construction.
Air Quality
 Dust generated during construction will be controlled by watering.
 Vehicles accessing the site for construction purposes will be properly maintained and
regularly inspected.
Heritage Resources
A Class I archaeological records review (1-mile radius; including 0.5-mile visual APE) and Class
III pedestrian survey (APE for direct effects) for the proposed installation of a new
communications tower and associated facilities on the TNF in Maricopa County, Arizona. SWCA
Environmental Consultants (SWCA) conducted the inventory to determine whether any cultural
resources would be affected by the project. The Area of Potential Effects (APE) for direct effects
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Exhibit B
is the 18 × 59–foot lease area in which the equipment would be installed—a total area of 0.02
acres. The APE for indirect effects (visual) is a 0.5-mile radius around the proposed tower location.
No archaeological sites or Isolated Occurrences (IOs) were found during archaeological survey of
the APE for direct effects. Therefore, no cultural resources were found within the APE for direct
effects. The APE for visual effects for the Fish Creek Hill tower is a 0.5-mile radius around the
proposed tower site, based on Exhibit B of the Nationwide Programmatic Agreement for Review
of Effects on Historic Properties (September 2004) for towers less than 200 feet in overall eight.
One historic property which has been determined eligible for the National Register of Historic
Places (NRHP) is within the visual APE (AR-03-12-02-1332/AZ V:5:197(ASM)). Site AR-03-12-
02-1332/AZ V:5:197(ASM) consists of the pre-1947 alignment of State Route 88/Globe High Line
Road/Apache Trail. The road is eligible for the NRHP under Criterion A, C, and D, for its
association with early transportation and water management in the twentieth century, its
construction, and its potential to provide important information about the past. Although the
proposed tower would be visible from the road, there are other structures in the immediate vicinity
including a parking lot, a communications tower and associated equipment, and a transmission
line. Because the vicinity of the proposed tower is already being used for infrastructure, the
addition of the proposed new tower and associated facilities is not expected to adversely affect the
characteristics of AR-03-12-06-1332/AZ V:5:197(ASM) which make the site eligible for the
National Register. SWCA recommends a finding of No Adverse Effect to Historic Properties for
the proposed project.
Hazardous Materials
 Maricopa County will ensure that vehicles and equipment used during construction are
properly maintained and regularly inspected.
 All fueling of equipment will be done on impermeable fabric, and no fueling will be done
within 100 feet of a watercourse or channel.
 Maricopa County will require all employees to adhere to Best Management Practice
guidelines, and all waste and spills generated on site will be disposed of in accordance with
state and federal regulations.
 Only emergency equipment maintenance will be performed at construction site locations.
Routine equipment maintenance will normally be conducted at offsite facilities.
Noise
 Construction machinery and equipment will be well maintained.
 Equipment on-site will be limited to the minimum necessary to complete construction in
an effort to mitigate construction noise.
Soils, Hydrology and Watershed
 Based upon the STATSGO data, the dominant soil composition in the general area of the
subject property is GARR, which has a very cobbly sandy loam soil surface texture.
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Exhibit B
Typically, Garr soils are light brown calcareous strongly alkaline soils with very cobbly A
horizons and very gravelly B2 horizons over bedrock at depth of 16 inches.
 The Property is located within the East Salt River Valley (ESRV) Sub-basin of the Phoenix
Active Management Area (AMA), which encompasses the eastern part of the AMA and
includes a portion of the City of Phoenix, the cities of Scottsdale, Tempe, Mesa, and
Chandler, and the towns of Superior, Apache Junction, Gilbert and Queen Creek. The
thickness of basin-fill sediments range from less than 100 feet near the basin margins to
over 10,000 feet southeast of Gilbert. The primary source of groundwater (49%) is from
the lower basin fill, with another 40% withdrawn from the middle basin fill and only 11%
withdrawn from the upper basin fill. Groundwater flows into the ESRV Sub-basin from the
Lake Pleasant Sub-basin, the Eloy Sub-basin in the Pinal AMA, and between the Santan
and Sacaton mountains in the southern part of the sub-basin. Groundwater also flows
toward a cone of depression caused by groundwater pumping east of Chandler. Natural
groundwater recharge occurs along stream channels and from mountain front recharge.
Other sources of recharge include infiltration of agricultural irrigation water, canal leakage
and storage at underground storage facilities (USFs). From 1990 to 2002, groundwater
recharge exceeded withdrawals by almost 2.7 million acre-feet (maf). Groundwater in
storage to a depth of 1,000 feet bls is estimated at more than 68 maf in the ESRV and
WSRV sub-basins. Earth fissuring and subsidence have occurred in the ESRV sub-basin
due to localized pumping. These occurrences are found near Apache Junction and in the
vicinities of Queen Creek, North Scottsdale and Paradise Valley. Well yields commonly
exceed 1,000 to 2,000 gpm. The median well yield reported for 2,397 large (10-inch)
diameter wells is 1,280 gpm. Substantial water level rises were measured between 1991-
92 and 2002-03 in a number of wells in the sub-basin. Increases of over 60 feet were
reported in some areas due to a combination of cessation of farming and associated
reduction in pumping, and direct use and recharge of CAP water. Groundwater level
depths measured during 2002-03 ranged from ten feet bls near Superior to over 800 feet
bls south of Cave Creek
 During construction, Storm Water Pollution Prevention (SWPP) will be placed to control
any soils runoff during rain. This SWPP will remain in place until the site construction is
completed.
Vegetation
 No protected species were found in the construction area. Vegetation to be removed is
classified as invasive.
 Soil and vegetation removed within the project area will be removed from the site as debris.
 Access to construction sites will be by existing roads.
 All construction vehicles shall be washed prior to entering the forest to avoid introducing
more weeds.
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Exhibit B
 Drivers will be instructed to avoid patches of weeds any time tires leave a paved surface,
to avoid the spread of invasive weeds.
Visual Quality
 All excavation spoils not able to be utilized on site will be removed from TNF lands.
 Rock excavation powder will be washed from the ground surface using water.
 The new equipment building will match the color of the existing rest area’s restrooms (see
attached BEHR custom color match).
 Any pavement damaged during construction will be adequately repaired.
Wildlife
 All trash and food items shall be contained in closed containers and removed daily.
 Solid waste will be contained and will be removed, at a minimum, weekly.
VII. Industrial Fire Plan Guidelines
Maricopa County, and their prime contractor, Motorola Solutions, Inc., will implement fire
prevention guidelines recommended by the National Wildfire Coordinating Group publication
PMS462, "Industrial Operations Fire Prevention Guide" (attached as Exhibit B).
Exhibits
Exhibit A – Fish Creek Communications Facility Exhibit Documents
Exhibit B - National Wildfire Coordinating Group publication PMS462, "Industrial Operations
Fire Prevention Guide"
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