Questions_3-yr_Groundwater_Monitoring_Project_140A0924Q0030_(3)_0003.pdf

RFQ NO. 140A0924Q0030 – 3-YR GROUND WATER MONITORING PROJECT:

QUESTIONS RECEIVED:

Please clarify how many reports are required. It appears that a groundwater monitoring reports needs to be prepared a�er each event and an annual report should also be prepared?

a. Please confirm if two reports are required, one groundwater monitoring report, a�er the first semi-annual event and then a second annual report a�er the second semiannual event that summarizes both events?

Yes, a monitoring report needs to be prepared after each monitoring event.

b. Or if three reports are required, one groundwater monitoring report a�er each event and then then a separate annual report?

The annual report includes a narrative describing the work and results with recommendations for system changes or improvement.

2. Please clarify if the �meline on the report submital dates is flexible? To produce a report within 30 days of a sampling event, analy�cal results would likely need to be expedited (faster lab turn-around and more expensive).

BEM understands the turnaround time for analytical results; therefore, submittals are flexible.

BEM and CO will need to be notified in these occurrences.

a. If a standard turnaround �me is acceptable, can the report deadline be changed to 60 days?

BEM understands the turnaround time for analytical results; therefore, submittals are flexible.

BEM and CO will need to be notified in these occurrences.

3. Under Task II (V) it states that 5 duplicate samples are required. Under Task II (V)6 it is stated that only 1 duplicate sample should be collected per event. Please clarify the number of duplicate samples that should be collected? Standard prac�ce is to collect duplicate samples at a rate of 1 per 10 samples collected, which would be 6 samples.

BEM apologies for the confusion. If standard calls for one duplicate for 10 samples, BEM agrees.

4. Please confirm the number of matrix spike (MS)/matrix spike duplicates (MSD) samples that are required? Typically, MS/MSDs are collected at a rate of 1 per 20 samples, which would result in 3 samples per event; however, Task II (V)7 indicates only 1 MS/MSD is required.

BEM apologies for the confusion. If standard calls for one duplicate for 20 samples, BEM agrees.

5. Please clarify if the contractor is responsible for disposal of inves�ga�on derived waste

(IDW) that is generated from sampling?

Contractor is responsible for the disposal of any waste derived from sampling/bailing of free-phase product.

6. Please clarify if the Contractor is responsible for disposal of free-phase fuel product that is collected from well bailing?

Contractor is responsible for the disposal of any waste derived from sampling/bailing of free-phase product. Be disposed at certified landfill.

a. If the contractor is responsible for disposal free-phase fuel product collected from wells, please confirm if the free-phase fuel product is ignitable or would require disposal as a Hazardous Waste based on historical results or historical waste characteriza�on/profiling?

Contractor is responsible determining the characterization based on samples and/or historical records.

7. Can the cer�fica�on of the report be completed by an Arizona Professional Geologist (PG) or an Arizona Professional Engineer (PE)? We would like to add the Arizona PG requirement choice.

Because this project is evaluating the impacts of heating oil on groundwater, it may be best with this study to get an opinion from a AZ Professional Geologist, to help understand how the groundwater interacts with the soil and geology in the area.