Air Quality Analysis:

DS&E performs Air Quality Analysis that adheres to Federal and State requirements, regulations and guidance, documents as outlined below:

Federal Air Quality Laws and Regulations

State Air quality Laws and Regulations

Air Quality Guidance and Information

The air quality analysis will address the objectives of the following Federal and State environmental statutes:

Noise Analysis:

DS&E performs noise modeling using the FHWA’s Traffic Noise Model (TNM) version 2.5 with inputs such as projected traffic volume, traffic mix, topography, and distance of the project from the receivers.

The traffic noise analysis will adhere to the highway noise analysis and abatement/mitigation requirements of the Federal Highway Administration (FHWA) and California Department of Transportation (Caltrans), as outlined in the following documents:

By fulfilling the requirements of the above, the noise analysis will address their objectives of the following Federal and State environmental statutes:

Water Quality & Storm Water:

DS&E provides a quality and affordable analytical services to Businesses, Government Agencies, Researchers, Lawyers, and Hospitals.

We have high skills in the following areas:

1. Research Design
2. Sampling
3. Data base Construction

We perform the following analysis:

1. Mean tests
2. Analysis of Variance: ANOVA and MANOVA
3. Analysis of Data using SPSS
4. Correlation
5. Simple and Multiple Regression
6. Logistic Regression
7. T-test
8. Chi-Square

DS&E protects the privacy and confidentiality of any data you entrust to us, and of the results of any analyses of your data, to the utmost of our ability.

We are ready to destroy all copies of your data in our possession upon notification from you to do so.

Hydrology Analysis:

DS&E performs hydrologic analysis that includes:

Hydraulics Analysis:

DS&E performs culverts design for highway projects