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4.4 PATH DESIGN 4.3.1 When conducted by Motorola, path design services are based on formal field survey data gathered under task 4.2. Path designs are considered final. The Project can move to the implementation stage based on the recommendations within the final design report. Path design Services include the following responsibilities: 4.3.3 In addition to warranty exclusions set forth in the agreement Motorola is not responsible for excessive outages or degraded performance due to abnormal fading conditions that include, but are not limited to: • Formation of extreme radio refractivity gradients associated with: • Exceptionally large temperature inversions, • Abnormal temperature/humidity layers, • Fog formation, • Signal trapping caused by surface or atmospheric ducting; • Reflections from unidentifiable off -path terrain features or physical structures; • Rain fading due to rainfall rates that are more than the published rates or charts used to predict rain induced outages; If Motorola suspects abnormal propagation conditions are causing degraded system performance, Motorola will reasonably assist Cabarrus County in verifying the conditions leading to the degraded system performance. Ager the problem has been identified, Motorola will support Cabarrus County in identifying possible solutions to the problem, and assess the incremental improvement expected from corrective actions. Implementation of corrective action required to remedy this type of problem shall be the sole responsibility of Cabarrus County The stated rain model applies for systems that are eight (8) gigahertz and higher. Cabarrus County may request a copy of Motorola's path design model. 13-AugustM18 ® Motivate Solutions Confidential Restricted Use or dMbsure dine proposal's subject to the nabictbis on the cover page. Tarso o/Contents vii F-9 Page 202 Select frequency band and capacity requirements for each path; X Determine antenna centerline heights based on Motorola's path clearance criteria; X Design paths to protect against ground-based reflections; X Select radio types, antenna sizes and types, power output, and protection scheme required to meet Customer availability and capacity requirements; X Calculate path availability using industry acccpted models for predicting outages and countermeasure improvements associated with normal atmospheric multi -path fading, up -fading, rain fading and obstruction fading; X Submit a final path design report, including system maps, path profiles and availability calculations. X 4.3.3 In addition to warranty exclusions set forth in the agreement Motorola is not responsible for excessive outages or degraded performance due to abnormal fading conditions that include, but are not limited to: • Formation of extreme radio refractivity gradients associated with: • Exceptionally large temperature inversions, • Abnormal temperature/humidity layers, • Fog formation, • Signal trapping caused by surface or atmospheric ducting; • Reflections from unidentifiable off -path terrain features or physical structures; • Rain fading due to rainfall rates that are more than the published rates or charts used to predict rain induced outages; If Motorola suspects abnormal propagation conditions are causing degraded system performance, Motorola will reasonably assist Cabarrus County in verifying the conditions leading to the degraded system performance. Ager the problem has been identified, Motorola will support Cabarrus County in identifying possible solutions to the problem, and assess the incremental improvement expected from corrective actions. Implementation of corrective action required to remedy this type of problem shall be the sole responsibility of Cabarrus County The stated rain model applies for systems that are eight (8) gigahertz and higher. Cabarrus County may request a copy of Motorola's path design model. 13-AugustM18 ® Motivate Solutions Confidential Restricted Use or dMbsure dine proposal's subject to the nabictbis on the cover page. Tarso o/Contents vii F-9 Page 202