Entech Engineering Inc. services
Quality Management Services
Entech Engineering personnel are trained in the federal and state air quality control regulations and test procedures that include the Environmental Protection Agency (USEPA), the Texas Commission on Environmental Quality (TCEQ), and the Louisiana Department of Environmental Quality (LDEQ) testing and laboratory methods. Our personnel are familiar with procedures detailed in the EPA Code of Federal Regulations, the TCEQ Sampling Procedures Manual, the LDEQ`s Source Test Manual, and other states` regulations. Entech Engineering personnel attend courses that certify employees for reading visible emissions and seminars that update our personnel on new regulations. This training and the constant updating on environmental information and technical advances keep our employees abreast of the latest changes in the environmental field.
Data Quality Objectives (DQOs) Services
Entech Engineering`s Data Quality Objectives (DQOs) are guidelines for obtaining quality data that are representative and indicative of the source tested. The DQOs are accomplished in terms of precision, accuracy, completeness, comparability, representativeness, and Practical Quantitation Limits (PQLs). The procedures prescribed here are intended to ensure that the adequate DQOs are set and achieved.
Mobile Test Trailers Services
Entech Engineering operates twelve sixteen-foot and twenty-foot test-trailers with CEMS for monitoring gaseous constituents: NOX, CO, CO2, SO2, O2, and THC. All continuous monitoring instruments and sample handling systems are mounted in the self-contained mobile laboratory.
Sample Handling and Analysis System Services
The sample handling and conditioning system used by Entech Engineering can extract from one to 24 samples, individually or in composite, from the flue or vent gas ducts. One to four positive displacement pumps is used to draw samples from the gas duct to the trailer continuously. Depending on the applications, probes may vary from stainless steel to borosilicate to quartz and sample lines may vary from polyethylene to nylon to Teflon. Selection of the probe and sample-line material depend on the pollutant and sampling methodology. In most emission testing applications, the probes and sample lines are heat traced to prevent condensation.
Continuous Emissions Monitoring System Services
NO/NO2 CEMS (RM 7E) - NOx is measured using a chemiluminescence NO/NO2 gas analyzer. This analyzer measures the intensity of the light given off by the nitric oxide/ozone reaction, where the term chemiluminescence is derived. For measuring NO concentrations only, the gas samples are sent directly to the reaction chamber bypassing the NO2-to-NO converter. For measuring NO2 concentrations, the sample gas passes through a thermal NO2-to-NO converter to convert nitrogen dioxide to nitric oxide and analyze the combined NO/NO2 as NO. The difference of the two measurements, i.e., gases passing through the converter and bypassing the converter, is the NO2 concentration. The instrument is calibrated using zero gas (N2) and EPA Protocol span gas (NO in N2) to ensure data accuracy.