Q_A_attachement_0003.pdf

140R6025Q0026 – EC MTE Sump Pump Replacement Q&A sheet

Question: Regarding the Basket Strainers – Flow Conditions of the strainers. What is the GPM.

Answer: Unknown. Should not decrease the flow rate in the drawings.

There are no existing basket strainers. All the information available regarding the specs for strainers is in the Sump Pump Data drawings that are provided with this solicitation. It is the o eror’s responsibility to provide a quote on what they believe is necessary to meet the objective.

Question: Regarding the Basket Strainers –What is the Operating pressure?

Answer: Unknown.

There are no existing basket strainers. All the information available regarding the specs for strainers

Question: Regarding the Basket Strainers – What is the operating temperature of water of strainer?

Answer: Water usually is between 33°F and 58°F.

Question: Regarding the Basket Strainers – Solids to be removed are they considered Hard/Soft/Sticky/Fibrous Solids concentration PPM? WT% and Volume?

Answer: Unknown – Most contaminates seen are biologic.

There are no existing basket strainers. All the information available regarding the specs for strainers

Question: Regarding the Basket Strainers – What are the particle size requirements?

Answer: Particle size requirement is unknown. Most contaminates seen are biological.

There are no existing basket strainers. All the information available regarding the specs for strainers

Question: Regarding the Basket Strainers – If the bolt holes are corroded or destroyed to connect the strainer to the pump housing, what other methods will be acceptable to fasten the strainers to pump flange?

Answer: We do not have an ‘acceptable method’ in mind. Please quote with you recommendation for a method, as the professional expert.

Question: Regarding the Basket Strainers – Can the BOR assist the contractor with the crane to get the existing and new basket strainers out/in of the trench?

Answer: Yes, BOR can assist with the crane. Please see the updated Performance Work Statement including in this amendment. The ‘installation’ section of 4.0 ‘Work requirements’ provides further clarification.

Question: Regarding the Basket Strainers – What are the dimensions of the existing strainers from flange to flange?

Answer: There are no existing basket strainers. All the information available regarding the specs for strainers is in the Sump Pump Data drawings that are provided with this solicitation. It is the o eror’s responsibility to provide a quote on what they believe is necessary to meet the objective.

Question: Regarding the Basket Strainers – Do di erential pressure gauges on both sides of the strainer need to be installed to know if the strainer is clogged with piping?

Answer: No, output pressure should indicate if the strainer is clogged with piping?

Question: Regarding the Basket Strainers – How does the strainer need to be supported on the bottom of the trench?

Answer: Strainer should be mounted to the input flange of the pump, not to the trench. Pumps will need to be mounted to the deck of the Sump.

Question: Regarding the Basket Strainers – Is there any lead paint where the basket strainers are located?

Answer: Unknown but doubtful, as most of the area is corroded.

Question: Regarding the Vertical Turbine Pump - If concrete anchors are installed in the existing slab, do the supports need to be stressed tested before being utilized?

Answer: Yes

Question: Regarding the Vertical Turbine Pump - If new seals cannot be produced for the existing pumps, then can the new pumps be manufactured epoxy coated in lieu of stainless steel?

Answer: Yes

Question: Regarding the Vertical Turbine Pump - Does the check valve on the pump discharge need to be replaced?

Answer: No

Question: Are payment and performance bonds required on the project?

Answer: No

Question: Are we required to submit 01 14 10-1 Use of Site, 01 14 30-1 Interruption of Service RSN?

Answer: As specified in the Performance Work Statement (PWS), there should be NO outage during this project. The PWS was updated with this amendment to provide more clarification on this point.

Please see the ‘installation’ section of 4.0 ‘Work requirements’ for further detail.

Question: Is the contractor required to have a full-time onsite safety personal and QC o icer on site when the work is occurring?

Answer: Yes, The PWS has been updated to reflect that requirement. See section 5.0 for more detail.

Question: Can a different type of pump be submitted in lieu of Peerless pumps as an alternate pump manufacturer per the attached submittal.

Answer: Yes, as long as the pump meets the specifications and flows of the currently installed pumps.

Question: It appears like the primary issue they are encountering is that the oil tub appears to be compromised. This likely means when the pump runs, oil is discharged along with water. There is piping that is nearly clogged. Does that need replaced?

Answer: This is an unknown. However, in high flow pipes the microbial corrosion is not able to take hold and restrict flow, as is the case in piping where water sits stagnate for long periods. These pumps were tested recently, and all of their flow rates were as good as the day they were installed.

Question: Reviewing the PWS, it reads like we are looking at just replacing the pump. Are we also looking to replace the pipe shaft down to the sump pit?

Answer: The solicitation lays out options on what you should propose on (see clause 52.212-2):

(1) Overhaul existing pump

(2) Replace pump to function with current motor

(3) Replace both pump and motor

However, per this amendment we have added verbiage to the solicitation detailing that o erors can provide a proposal that includes additional tasks, repairs or replacements based their expert opinion on meeting the acquisition objective. Replacing the shaft is an example of this type of situation. When you present such options, please include detail on why you feel they are necessary or beneficial to the objective. Please review the solicitation front page, and clause 52.212-2 for updated information on the topic.

Question: Our representative attempted to review the condition and specifications of the basket strainer for the 6000 GPM pumps, as these were not on the plans provided. These basket strainers previously in place have been removed and there was not any information in the documentation onsite regarding basket strainer size and dimensions, size of strainer opening, etc. Is there additional information that can be reviewed here?

Answer: There are no existing basket strainers. All the information available regarding the specs for strainers is in the Sump Pump Data drawing that are provided with this solicitation. It is the o eror’s

Question: If we quote either the overhaul or new pump, do you want all of the column sections replaced and or coated (to prevent future microbial corrosion)?

Answer: Replacing the column sections or coating is not a requirement that has been outlined in the PWS. However, per this amendment we have added verbiage to the solicitation detailing that o erors can provide a proposal that includes additional tasks, repairs or replacements based their expert opinion on meeting the acquisition objective. When you present such options, please include detail on why you feel they are necessary or beneficial. Please review the solicitation front page, and clause 52.212-2 for updated information on the topic.

Question: What parts are you considering spares for the 500GPM pump?

Answer: Pump seals bearings and bushings. As well as anything needed for standard maintenance, as specified by the manufacturer.

Question: On the scope it calls out mounts for the 2 – 6000GPM pumps. Are we needing to include a mount for the 500GPM pump?

Answer: Yes, this was documented on the PWS, answered under section 4.3 where it states, “All pumps”, meaning mounts for the 500 GPM and the 2 qty 6000 GPM pumps.

Question: Does each employee / contractor need to have a PIV for on-site work?

Answer: As of this amendment posting date, PIV cards will NOT be required. However, all on-site workers will be required to complete specials agency security checks which includes at a minimum fingerprinting and completion of the OF-306 documents. Other documentation may also be required. Section 5.0 of the PWS has been updated to reflect this change.

*** Please make sure to review the updated PWS and Sump Pump Data information attached with this amendment.