FA5004-10-T-0007-P0002.doc

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The required response date/time has changed from 01-Jul-2010 04:30 PM to 08-Jul-2010 04:30 PM.

The following have been added by full text:

QUESTIONS AND ANSWERS 2

1. How many gallons are discharged into the pond during a back flush?

Answer: The backwash water is discharged at a rate of 1300 gpm from the filters and each backwash cycle lasts between 7-10 minutes. You can anticipate during each backwash cycle that around 13K gallons of water will be discharged into the percolation/settling pond. The plant contains 6 filters and each filter can be backwashed either manually or automatic after 200K gallons of water has been processed by the filter and normally not all the filters backwash at the same time.

2. Please provide a detailed analysis of the sludge and water including chemical composition and particulate size.

3. Answer: There was no analyses done on the particulate size but, it is the consistency of silt with a mixture of fine sand. The sample results for the chemical composition are attached. Uploaded to FBO.

4. How many times in a 24 hour period is the system back flushed into the pond and are there scheduled times for the flush.

Answer: On an average day, we process around 500K gallons of well water through the six filters at the water plant. Therefore, you can anticipate that roughly 100K gallons of water is processed by each filter per day. Each filter will backwash once 200K gallons of water have processed through it. The backwash of the filter can be done either manually or it will automatically backwash once the 200K gallon limit is reached. We should be able to manipulate the system to have the filter manually backwash during periods that will not interfere with the contractors operations. On an average day, there is roughly 50K gallons of water that is backwashed and discharged to the percolation/settling pond.

5. We request a copy of the water discharge permit.

Answer: The discharge permit is attached. It will be uploaded to FBO.

6. Is there a maximum amount of water that can be discharged into the sough per hour, day ECT?

Answer: There is a maximum amount of 200K gallons of water a day that can be discharged to the percolation/settling pond according to our wastewater disposal permit.

7. Specify an initial amount of dredge material to be removed. Any more material to be removed beyond the specified amount at per unit size for cost.

Answer: The pond size is approximately 210 feet long by 60 feet wide and is 5 feet deep with a capacity of 62,000 cubic feet. The estimated amount of sediment accumulation is approximately two feet in the bottom of the settling pond, which comes up to 25,000 cubic feet of material. The sediment should be high in water content, roughly 80% water to 20% solids concentration. This will bring the total of solids that will need to be removed to approximately 5,000 cubic feet of material.

8. Please clarify area referred to in paragraph 1.6. Does this refer to the settling pond?

Answer: This refers to the settling pond and any area around it that may be damaged during the removal process. Basically, we would like the area restored to the same condition that it was in prior to the contractor beginning work.

(End of Summary of Changes)