Addition 1

Posted: 1/8/2025

Type of Addition: Addendum

Overview: See addendum 1 attached.

Deadline: 1/22/2025 3:00 PM

Solicitation #: ITB AP 19-25

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Addition 3

Posted: 1/21/2025

Type of Addition: Addendum 3

Overview: Addendum 3

Deadline: 1/27/2025 3:00 PM

Solicitation #: ITB AP 19-25

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Question 1

Posted: 1/2/2025

Question: 1. What are the manuf/model/serial data for the existing Loading Pumps P-3 and P-7? P204 shows the new pumps connecting to existing piping, so it is important to replace in-kind to minimize piping rework. 2. Ditto for existing offload pump P-2. 3. Site pics show existing pumps to be Gorman Rupp Roto Primes w/ auto air discharge option. However, the air discharge lines are open to atmosphere. Recommend running air discharge lines for new pumps to a small collection tank. 4. 23.11.13 requires RTDs for monitoring motor winding temperature. Are thermostat switches an acceptable substitute? We have found motor RTDs to be problematic on past projects. 5. For the 4 ea. 30k Double Wall Vertical ASTs, does the AHJD consider the double wall design an acceptable means of secondary containment? This must be verified when there are tank penetrations located below the fuel level. 6. Are the tank bottoms to be sloped to a sump to promote water collection as required in ATA 103? It is difficult to remove water from flat bottom tanks. 7. Recommend water draw-off isolation valve be 2” Double Block and Bleed type for positive shut-off. 8. With a sloped bottom, we recommend a low suction line be added to the tank design to allow means for emptying the tank. 9. Is a floating suction required as per ATA 103? I do not see one on the drawings nor is it specified. 10. Is an interior ladder required for the tanks? Highly recommended for future maintenance and inspection. 11. The Overfill Prevention Valve specified in 23.11.13 is completely wrong for this application. The OPW 61 is for gravity drop applications (i.e. gas station tanks) and are not suitable for pressurized fill. 1. Electrical plans (E103) show Motor Operated Valves for each tank. Are these for Overfill Prevention? 1. There is no spec for these actuators. Please provide. Voltage, cycle time, etc. 2. Would the Engineer consider a hydraulic control valve with float control to serve as the OFPV? 12. Is an Inlet Pipe diffuser required as per ATA 103? 13. Need spec for High Level Alarm float switch. 14. Recommend Gauge Hatch with internal Stilling Well be added to tank design which allows for manual tank gauging. 15. P702 shows 2” atmospheric vent. This is too small for a 30k tank with 6” fill line. Recommend 6” vent size minimum. 16. Caged ladders will not be allowed by OSHA after 2036. Recommend providing new fall prevention systems for the 2 new vertical ladders which will comply with future OSHA regulations. 17. Tank interstitial sensors are not shown in the drawings, but are required per spec. Will they be required? 18. We assume tank ATG panel is existing. If true, then please provide manuf/model/serial data so we can quote the correct tank ATG level probes and confirm compatibility. Also, expansion cards may be required to accommodate the new level probes and interstitial sensors. 19. Need spec for new flexible connectors (P-2, -8).

Response: See addendum 2.