Skip to content
Active

City of Roseville — Closed Landfill Compliance Monitoring

Client / Site
City of Roseville
Type
Closed MSW landfill — post-closure monitoring
Role
Environmental Engineer (EIT) — report author & data-evaluation lead
Dates
Jan 2025 — Present
  • Groundwater monitoring
  • Surface water monitoring
  • LFG monitoring
  • Field instrumentation (GEM 5000, PID)
  • QA/QC & trend analysis
  • Title 27 compliance reporting
  • Python report tooling

Setting

A closed municipal solid waste (MSW) landfill in California’s Central Valley (Placer County / Sacramento metro) remains under long-term post-closure monitoring governed by CCR Title 27 and a Regional Water Quality Control Board Waste Discharge Requirements / Monitoring & Reporting Program order. The site requires recurring semiannual demonstration that groundwater, surface water, and landfill gas remain within regulatory limits across a multi-well compliance network and adjacent surface-water and perimeter gas-monitoring points.

My role

I serve as author and data-evaluation lead for the semiannual water-quality monitoring report — translating field events and laboratory results into a regulator-ready compliance narrative. I coordinate inputs from field sampling, laboratory chemistry, and figures/tables, and prepare the draft for project manager and client review prior to PE certification and agency submittal.

Methods & approach

Work spans a defined seasonal field event (groundwater, surface water, and landfill-gas monitoring with instruments such as the Landtec GEM 5000 and a MiniRAE 3000 PID), followed by structured data evaluation — trend review against multi-year historical context, background-versus-compliance comparison, and QA/QC validation. I adapt a controlled cyclic report template and apply a disciplined “diff every value against its source” review with color-coded change tracking to catch stale carryover text — a common quality risk in recurring regulatory reporting.

Outcome

A defensible, internally consistent semiannual compliance report suitable for client review and agency submittal, with corrective-action effectiveness assessed against historical trends.

Skills demonstrated

Regulatory compliance reporting; multi-media environmental monitoring (groundwater / surface water / landfill gas); field instrumentation; data QA/QC and trend analysis; technical writing for regulatory audiences; and custom Python tooling to automate paragraph-level diffing and QC of cyclic reports.