TRAILERS, TRANSPORT, TANK, BRINE, FRAC (BRINE) TANK, TRAILER MOUNTED, 500 BBL. CAPACITY, V-BOTTOM. FRAC TANK SPECIFICATIONS: The tanks must meet the following requirements: 4.1. Be sealed and leakproof 4.2. Be constructed of steel 4.3. Have 4 external manifolds. Manifolds shall be 4” ports with butterfly valves. 4.4. Have a 500-barrel capacity (21,000 GAL.) 4.5. Be equipped with the following: 4.5.1. Safety ladder, compliant with OSHA Standard CFR 1926.1050. 4.5.2. Standard 5th wheel king pin hitch 4.5.3. One (1) 25,000 lb. capacity axle with air brakes and spring suspension.4.5.4. Wheels and tires, 11” x 22.5 4.5.5. The following standard TxDOT compliant amber lights: 4.5.5.1. Rear turn lights 4.5.5.2. Clearance lights 4.5.5.3. Rear brake lights 4.5.5.4. Marker or running lights 4.6. DIMENSIONS: The dimensions of the tank must be: 4.6.1. Length: Minimum 40 feet 4.6.2. Width: Minimum 8 feet, Maximum 9 feet 4.6.3. Height: Minimum 8 feet, Maximum 12 feet