2019-067 Geofencing for Environmentally Sensitive AreasDate: April 12, 2019 Report No. 2019-067
INFORMAL STAFF REPORT
TO MAYOR AND CITY COUNCIL
SUBJECT:
Provide information on how geofencing can be used for preventing future clear-cutting of ESAs.
EXECUTIVE SUMMARY:
Council member Hudspeth requested staff to research the feasibility of using geofencing during
construction activities for the protection of environmentally sensitive areas (ESAs).
BACKGROUND:
Geofencing is a feature in a software program that uses the global positioning system (GPS) or
radio frequency identification (RFID) to define geographical boundaries. Geo-fencing allows an
administrator to set up triggers so when a device enters (or exits) the boundaries defined by the
administrator, an alert is issued (TechTarget). Its application in the construction industry is
growing and so far has been implemented for tracking equipment for loss recovery, tracking
personnel for staff management, and monitoring trespassers for security purposes.
In theory, a geofence could be established along the perimeter of environmentally sensitive areas
(ESAs) designated for preservation prior to land disturbing activities starting alongside with the
installation of tracking devices on field equipment. Even though the technology currently exists
there are some challenges, the upfront cost being substantial. In 2016, it was estimated the
average upfront cost of a mid-range geofencing app is between $50,000 – $150,000 (TSheets).
This cost could be significant, especially for small and midsize construction site operators. Other
challenges include who gets notified about the encroachment into the protected areas, and its
effectiveness in preventing the removal of vegetation versus documenting an encroachment.
CONCLUSION:
It is staff's opinion that installing physical barriers as visual cues is still needed even if/when
geofencing is implemented during land disturbing activities. Currently, per DDC Section
35.17.2.E.3.d protective fencing has to be installed along the perimeter of ESAs. An option
available is to also require signage for augmenting the awareness of the presence of protected areas
in construction sites.
STAFF CONTACT:
Deborah Viera
Assistant Director of Environmental Services
940.349.7162
Deborah.Viera@cityofdenton.com