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Exhibit B. Engineering and Construction Requirements pullboxes. Minimum conduit size shall be %". A tracing/caution tape must be installed in the trench over all buried conduit. • Conduit installed using horizontal directional boring (HDB), shall include tracer tape or traceable conduit.The minimum depth of the conduit shall be per NEC 2011 Article 300.5. The Seller is responsible for demonstrating that all conduits installed utilizing horizontal boring meets the minimum depth requirement and is solely responsible for any remediation costs and schedule impacts if the specification is not met. The HDB contractor must provide documentation of final depth and routes of all conduit installed in horizontal bores. • Conduit installed on building roofs shall not be installed near roof edges or parapets to reduce visibility.Any conduit penetrations through roof surfaces shall not be made within five (5)feet of the roof edge to reduce visibility. If conduit is installed on the exterior face of any building, it shall be painted to match the existing building color. In all cases, the visible impact of conduit runs shall be minimized and the design and placement of conduit shall be reviewed and approved by the Buyer as part of Design Review. • Electro-metallic tubing(EMT)shall be used in indoor,above grade locations,except where conduit needs to be protected from damage, where Galvanized Rigid Conduit(GRC) shall be required. EMT shall not be installed underground,outdoors,or embedded in concrete. EMT shall be cold-rolled zinc coated steel and be manufactured to UL and ANSI standards. Fittings shall be watertight and malleable gripping ring compression type. Pressure cast material for nuts of compression ring type fittings and set-screw type connections are not acceptable. EMT can be used outdoor, exposed to weather with approved UL-listed fittings. • Unless specified otherwise by Buyer, Galvanized Rigid Conduit(GRCj shall be used where to transition from underground to above ground exposed to weather up to 10' above finished grade where subject to physical damage in exposed areas. GRC shall be continuous hot-dipped galvanized manufactured per UL and ANSI requirements. Rigid aluminum conduit is not acceptable. Conduit bodies for use with steel conduit, rigid or flexible,shall be manufactured per UL requirements and shall be cast metal with gasketed closures. Fittings for GRC conduit shall be malleable iron or forged steel with cadmium or zinc coating. Union couplings forjoining rigid conduit at intermediate runs shall be of the same material as the conduit. Couplings shall be threaded concrete-tight to permit completing conduit runs when neither conduit can be turned and to permit breaking the conduit run at the union. Set screw connectors are not acceptable. • All conduits, boxes, enclosures, etc. shall be secured per NEC 690 requirements. • All conductors shall be insulated copper rated for 600V, minimum. 1000V-rated conductors shall be used for systems rated as such. DC conductors shall be PV Wire or USE-2 600V UL Listed Sunlight resistant wire. • All items shall be U.L. listed and shall bear the U.L. label. • All spare conduits shall be cleaned, mandrelled, and provided with a pullwire. Spare conduits shall be required for security cameras for ground mount systems. Exhibit B Page 15