Continuous Forest Inventory Re-measurement PROPOSAL NO. FY25-018
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The Spokane Tribe of Indians seeks to retain a reliable, responsible, responsive vendor who can accomplish the entire scope of work as listed below and according to this RFP. The Spokane Tribe is a Sovereign Native American Indian Tribe located in Washington State. The tribe operates under its own governmental system and has established its own tribal court system.
This document describes the inventory data collection specifications and is one part of the comprehensive forest carbon inventory methodology used for the project.
Finite Carbon Corp. has commissioned the following forest inventory for The Spokane Tribe of Indians. on their privately held lands in the State of Washington, including lands in Stevens County. Together the lands selected for the project total approximately 95,598 forested acres. The project boundary is defined by the boundary shapefiles provided with this specification document.
This effort is defined as an inventory re-measurement and consists of revisiting existing data points installed approximately 7 years ago. You will note that this document describes the inventory data collection specifications as though the plots were to be installed without finding the original pin, or as initial plots. This is meant to give cruisers the information needed to install a new plot should an old plot center be missing. This document includes all field procedures or references to procedures and is one part of the comprehensive forest carbon inventory methodology used for the project.
The purpose of this forest inventory is to quantify the forest carbon stocks of the standing living and dead tree carbon pools in the project area for enrollment as an improved forest management carbon offset project. The procedures herein shall also be the guiding basis for the collecting future inventory data annually and/or periodically throughout the project life. This inventory shall be conducted in a manner that is verifiable, facilitates modeling, and is replicable. All inventory data collected will be audited for accuracy. As all carbon claims for this project site will be independently verified at a later date, the accuracy and precision of the data collection for this project is paramount to project success for the forest owner.
DESIGN
The proposed inventory design is based on the requirements for volume and biomass calculation as listed in the volume and biomass equations approved for use by the California ARB U.S. Forests Compliance Offset Protocol. Finite Carbon developed the following sampling design in an effort to reduce overall sampling error and thereby optimize the carbon results for the forest owner:
Sampling Method for all samples involved with this inventory will be a 1/9-acre (39.25-foot radius) acre fixed radius sample plot for all stems 5.0 inches DBH and larger and a 1/150 acre (9.6-foot radius) fixed radius plot for all stems equal to or greater than 1.0-inch DBH and less than 5.0 DBH. All eligible standing living and standing dead trees shall be tallied. Definitions for eligibility are provided later in this document. All borderline trees will be measured to the geometric center of the base or point of origin of the tree using approved devices, including slope adjustments for slopes of 10% and greater in accordance with guidance provided later in this specification document. Walk though plot techniques will be used for samples on mapped non-forest edges or boundaries.
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