Quality Assurance

2022

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OARS utilizes a MassDEP-approved Quality Assurance Project Plan (QAPP) for our monitoring of water quality and bacteria in the Sudbury, Assabet, and Concord rivers.

A: WQ Sampling Manual

B: Bacteria Sampling Manual

C: OARS field data sheets

D: Nashoba Analytical QAQC Manual Chemistry

E: Nashoba Analytical SOPs

F: Alpha Analytical Quality Systems Manual

G: Alpha Analytical SOPs

H: Prior DEP Bacteria Monitoring

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~30%

of the SuAsCo rivers watershed is wetlands, crucial for wildlife habitat and water quality

~30%

of water samples in the SuAsCo rivers watershed contain PFAS, leading to increased monitoring and remediation by local authorities and environmental groups

~70%

of dams in the SuAsCo watershed are over a century old, requiring extensive upkeep and presenting obstacles to river restoration and fish passage

>40%

of the land within the watershed is publicly accessible, offering recreational opportunities such as hiking, boating, and birdwatching to the community

~15%

of the land in the SuAsCo rivers watershed is covered by impervious surfaces such as roads, rooftops, and parking lots. This contributes to stormwater runoff and water pollution issues

Quality Assurance

Water Monitoring Data Quality Assurance

QAPP

2022 QAPP Appendices

Quality control reports are available on request.