Board Of Aldermen - Agenda - 5/24/2022 - P187
March 31, 2022 Page 2
20220331 Lafleur FY 2023-2025 Services Scope.docx
Task2 Groundwater Reporting
We anticipate that Sanborn Head will assist the City with the following groundwater
reporting services for the Four Hills Landfill:
« Reviewing the field groundwater sampling and laboratory analytical data from the Four
Hills November and April Permit required sampling events, and updating
corresponding Equis database and analytical tables;
=» Reviewing the field groundwater sampling and laboratory analytical data from the Four
Hills assessment monitoring and updating corresponding Equis database and analytical
tables. For planning purposes this scope assumes that assessment monitoring is only
being performed at monitoring wells MW-111S, MW-111R, and MW-112S and will be
conducted on a quarterly basis (i.e, in the months of February, April, July, and
November);
s Preparing four data transmittals per year for the Four Hills Landfill to be submitted to
the NHDES within 45 days of sampling. The data transmittals will be prepared for the
February and July assessment monitoring, and the April and November Permit
monitoring (which also incorporates the April and November assessment monitoring).
Each data transmittal will include NHDES cover sheets, the laboratory analytical report,
and analytical data summary tables. In addition, the February, April and July data
transmittals may include a short cover letter that summarizes key observations about
the data and conveys recommendations, if applicable, based on the review of the data.
= Preparing the Annual Report for the Four Hills Landfill to be submitted to the NHDES in
January of each year, as required in the Groundwater Management and Release
Detection Permit for the site (GWP-198403099-N-006). The format and content of the
annual report will be like that of the 2021 Annual Report.
This task does not include time for non-routine groundwater tasks that may occur for the
Four Hills Landfill (e.g., responding to comment letters prepared the NHDES), or data
review, analysis, summary, and reporting associated with non-routine groundwater
monitoring (i.e., not included in the scope of Permit required monitoring, or the existing
assessment monitoring associated with monitoring wells MW-111S, MW-111R, and MW-
1128).
In addition, we understand that the City does not require assistance from Sanborn Head for
the Lincoln Park Landfill, Old Nashua/Nashua Riverside Landfill, Roussel Park Landfill and
Shady Lane Landfill during FY 2023, 2024, and 2025, and that the City will continue to
prepare reports and submittals for these four sites.
Task3 Annual Waste Capacity Evaluation
For this task, Sanborn Head will perform the annual waste capacity comparison for Phases
] - If] of the Four Hills Landfill. We understand that the City will retain a licensed surveyor
to prepare a topographic survey of Phases [, II, and III. Our evaluation will include the
following:
SANBORN HEAD
