Specifications include, but are not limited to: Contractor shall provide Hourly Rate line clearance tree trimming and tree removal services within the Mesa ESA per the Technical Specifications within the following groups; Group A: As Needed, Scheduled Line Clearance, Tree Trimming and Tree Removal Services: This work will be performed within the 5.5 square mile area within the Mesa ESA on an as-needed scheduled basis. Pricing shall include regular time and after- hour/weekend hourly rates. Group B: Emergency Response Line Clearance/Tree Trimming and Tree Removal Services: This is emergency response service, performed exclusively within the 5.5 square miles within the Mesa ESA during emergency conditions. Pricing shall include regular time, after-hour/weekend/ holiday and over time hourly rates with availability on a twenty-four (24) hour per day basis and a response time of two (2) hours or less.