Continuous Emissions Monitoring for the Upper Midwest
Industrial Sales Solutions supplies and supports Continuous Emissions Monitoring Systems across power generation, the chemical industry, ethanol and biofuels, refining, cement, and industrial process facilities. We represent CAI/ENVEA, DURAG Group, Universal Analyzers, and Process Insights — and partner with Contech for turnkey CEMS integration, DAHS reporting, and long-term service. From CEMS analyzer replacement and shelter builds to full compliance monitoring for 40 CFR Part 60, Part 63 (MATS), and Part 75 applications.
CEMS Gas Analyzers
Extractive and in-situ analyzers for SO₂, NOₓ, CO, CO₂, O₂, HCl, NH₃, THC, and mercury — NDIR, FID, chemiluminescence, paramagnetic, FTIR, and laser-based measurement.
Analyzer Replacement & Retrofit
Legacy CEMS analyzer replacement from any manufacturer — Thermo Fisher, Teledyne API, Siemens, Rosemount, Servomex, Sick — with recertification planning, DAHS reconfiguration, and RATA support.
Shelters & Turnkey Integration
New NEMA-rated CEMS analyzer shelters plus refurbishment and upgrades of existing shelters — a Contech specialty. Sample conditioning, DAHS platforms, and DCS/PLC/SIS integration for new builds and legacy CEMS modernization — Contech integrates any analyzer brand into shelter and DAHS systems.
Ongoing Service
Full turnkey installations including DCS and PLC integration, quarterly field service and system troubleshooting, spare parts, calibration gas support, quarterly RATA assistance, and compliance reporting help — local field service across the Upper Midwest.
CEMS for chemical manufacturing companies across the Upper Midwest. Whether it's SO₂ and NOₓ monitoring on process boilers, HCl and HF trace analysis on scrubbers, VOC monitoring on regenerative thermal oxidizers, or continuous mercury or ammonia measurement on specialty processes — ISS helps chemical companies select the right analyzer technology, coordinate turnkey integration through Contech, and stay on top of long-term compliance obligations under 40 CFR Part 63 subparts, Boiler MACT, and Title V permit requirements.
CEMS for the North Dakota coal fleet and Upper Midwest power generation. ISS supports coal-fired power plants, natural gas combined-cycle units, and simple-cycle peakers with the full monitoring scope required for 40 CFR Part 75 acid rain compliance, MATS mercury and HCl monitoring under Subpart UUUUU, and CSAPR NOₓ / SO₂ allowance tracking. From CAI/ENVEA gas analyzers and DURAG opacity, flow, and mercury CEMS to Contech DAHS reporting and RATA support — the full monitoring stack for utility and industrial power generation in Minnesota, North Dakota, South Dakota, and Iowa.
CEMS shelter refurbishment and legacy system upgrades. Most reps only sell new hardware. Through our Contech partnership, we can refurbish existing analyzer shelters, retrofit legacy CEMS installations with current-generation analyzers, replace failing sample handling systems, and modernize DAHS platforms — regardless of the original analyzer brand installed, including Thermo Fisher, Teledyne API, Siemens, Rosemount, Servomex, and Sick. Often at a fraction of new-build cost and with far less permit disruption. Ideal for aging shelters at coal plants, industrial boilers, and ethanol facilities that need continued service life without a full replacement project.
Local support based in Faribault, MN — serving Minnesota, Wisconsin, Iowa, North Dakota, South Dakota, and Montana. On-site visits, RATA support, and same-week response for compliance issues across the Minneapolis-St. Paul, Duluth, Rochester, Fargo, Bismarck, and Sioux Falls metros.
System diagram — hover or click any component
Analyzer technology — benefits, use cases & regulatory fit
- Field-established technology with a long history of EPA Performance Specification certifications
- Dedicated analyzer per gas — designed for independent measurement of each gas component
- FID available for THC/VOC applications where laser-based methods may not be applicable
- Available with a broad range of EPA Performance Specification certifications — confirm applicability with manufacturer
- Cost-effective option for standard SO₂/NOₓ/CO/O₂ monitoring applications
- One analyzer measures 10+ gases: SO₂, NOₓ, CO, CO₂, O₂, HCl, HF, NH₃, N₂O, H₂S, H₂O and more
- Manufacturer-stated: no daily calibration gas required — OFCEAS laser design minimizes zero/span drift
- Designed for high-moisture stacks (>80% H₂O) without sample drying per manufacturer specifications
- Available in low certified measurement ranges for HF, NO, CO — applicable to sources with stringent emission limits
- QAL1 type-approved by TÜV and MCERTS to EN 15267 per manufacturer documentation
- Direct in-situ measurement — no sample extraction, probe, or heated line needed
- Applicable to sources requiring real-time PM/opacity monitoring as an alternative to periodic stack testing
- Ultrasonic stack flow: no moving parts or pressure taps per manufacturer design
- Flame scanners: UV and IR detection for burner control applications
- Continuous bag leak detection — designed to identify filter failures early
- Designed for continuous Hg monitoring in applications subject to MATS 30-day rolling average requirements
- Elemental (Hg⁰) and oxidized (Hg²⁺) mercury speciation available
- Sub-µg/Nm³ detection limits — applicable to sources with stringent Hg emission limits
- Sorbent trap option available for applications requiring Method 30B-compatible monitoring
- Compatible with DAHS platforms for automated data acquisition and regulatory reporting support
- Single-source supplier capability from concept through commissioning
- Custom analyzer shelters: climate-controlled, NEMA-rated for harsh environments
- DCS, PLC, SIS, and HMI integration — any platform, any protocol
- DAHS platforms for automated data acquisition supporting regulatory reporting workflows
- Ongoing field service, calibration, and RATA QA/QC support post-startup
- Designed for a range of stack conditions — wet, dirty, and high-temperature applications
- Heated sample lines designed to maintain gas above dew point to help prevent analyte loss
- Dilution probe options available for high-moisture or corrosive gas stream applications
- Gas coolers and conditioners prepare sample for downstream analyzers
- First step in any extractive system — sample handling quality directly affects downstream measurement accuracy
CEMS markets & applicable regulations — Upper Midwest territory
Click any market to expand regulations, measured gases, and ISS equipment fit.
| 40 CFR Part 75 | Requires continuous SO₂, NOₓ, CO₂, flow, and opacity monitoring with DAHS and quarterly RATA for coal/gas EGUs |
| CSAPR / Update | Establishes NOₓ and SO₂ allowance budgets; Part 75 CEMS applicable to sources subject to cap-and-trade requirements in MN, ND, SD, WI, IA |
| MATS (Sub. UUUUU) | Continuous Hg, HCl and PM with 30-day rolling averages — coal- and oil-fired EGUs |
| EPA Method 19 | F-factor methodology for heat input and stack gas flow; applicable to turbine installations where Method 2 traverse is impractical |
| Part 60 Sub. Da | New electric utility steam generating units — SO₂, NOₓ and PM standards with continuous monitoring |
| Boiler MACT (Sub. DDDDD) | Applicable to major source industrial boilers not subject to Part 75; includes CO monitoring, periodic PM/HCl/Hg testing, and opacity requirements |
| Part 60 Sub. Eb | MSW/RDF incinerators: SO₂, NOₓ, CO, HCl, opacity, Hg, dioxins CEMS |
| Part 63 Sub. EEE | Hazardous waste combustors / WTE: broadest gas suite required of any source type |
| 40 CFR Part 64 (CAM) | Applicable to major sources not subject to Part 75; establishes indicator monitoring requirements for opacity, SO₂, and NOₓ |
| Part 63 Sub. BBBBBB | Gasoline distribution area sources — denaturant storage and loading rack VOC/HAP controls at ethanol facilities |
| 40 CFR Part 60 (NSPS) | Boiler subparts for process steam generation at larger facilities |
| 40 CFR Part 64 (CAM) | Compliance Assurance Monitoring for major source permit requirements |
| Part 60 Sub. G / Ga | Nitric acid plants — NOₓ CEMS required; Subpart Ga applies to units built or modified after October 2011 |
| Part 63 Sub. FFFF | Miscellaneous organic chemical manufacturing — HAP monitoring |
| Part 60 Sub. H | Sulfuric acid plants — continuous SO₂ CEMS, opacity monitoring |
| Part 63 Sub. S | Pulp/Paper MACT — TRS monitoring from recovery boilers, lime kilns, smelt tanks |
| Part 60 Sub. BB | Kraft pulp mills — SO₂, opacity from recovery boilers |
| Boiler MACT (Sub. DDDDD) | CO CEMS for power boilers; periodic HCl and Hg testing |
| 40 CFR Part 64 (CAM) | Compliance monitoring plans for multiple source types across the facility |
| Part 60 Sub. OOOO / OOOOa / OOOOb | VOC and methane from compressor engines, dehydrators and storage vessels; OOOOb applies to sources constructed after December 2022 |
| RICE NESHAP (Sub. ZZZZ) | CO catalyst monitoring on compressor engines; hours-based maintenance triggers |
| Part 60 Sub. KKK / LLL | Equipment leaks (KKK) and SO₂ from sweetening units (LLL) at onshore gas processing plants |
| Part 63 Sub. RRRRR | Taconite MACT — Applicable to taconite processing operations; addresses PM, opacity, and CO monitoring at pelletizing furnaces and kilns |
| Part 60 Sub. H | Sulfuric acid plants — SO₂ CEMS, opacity; applies to potash/phosphate processing in ND |
| 40 CFR Part 64 (CAM) | Compliance monitoring plans; opacity and CO indicator monitoring at major source kilns |
| RICE NESHAP (Sub. ZZZZ) | CO catalyst monitoring on diesel/gas emergency generators; hours-based maintenance triggers |
| Part 60 Sub. IIII/JJJJ | Stationary CI and SI engines — NOₓ, CO emission standards and monitoring for standby generators |
| State air permits | MN, WI, IA state permits often require monitoring beyond federal minimums for large campus generator fleets |
Beyond CEMS. Sample handling, process analyzers, gas detection, heat transfer and oil filtration — the full set of lines ISS represents across the Upper Midwest.
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