Under the scrutiny of lawyers, commissioners and opposition, Dave Parzych has testified in trials, hearings and depositions on noise related project issues. Typical testimony is related to projects requiring special use permits or zoning approvals but also includes eminent domain issues, criminal cases, and various other situations requiring legal support and acoustical expertise. Examples of the types of cases he's worked on are provided below. With over 30 years of experience in the field of acoustical engineering and noise control, he is known as an expert in outdoor sound propagation modeling, power plant and industrial noise. Dave is a Licensed Professional Engineer in the State of Oregon with specialty in Acoustical Engineering (PE18940) and is Board Certified by the Institute of Noise Control Engineering. He has been an invited speaker and author in various engineering conference sessions on computer community noise modeling (prediction), noise abatement/silencing and sound wall design. He also holds a patent in gas turbine silencing and has served as a member and chairman of several standards committees on noise and acoustics.

Case NO: 2017-10656-CODL KEITH LAWHUN, Petitioner, vs CITY OF DELTONA, Date: January 29, 2019

Case No. 9:16-CV-80170-KAM UNITED STATES DISTRICT SOUTHERN DISTRICT OF FLORIDA HARBOURSIDE PLACE, LLC vs. TOWN OF JUPITER, Date: September 15, 2016

Case No.: 2013-CA-014414-O ORLANDO-ORANGE COUNTY EXPRESSWAY AUTHORITY, Petitioner, vs. BRUCE A. HATCHER; JEANNIE R. HATCHER; et al., Date: April 27, 2016

Case No: 09-4561-CA CHARLOTTE COUNTY VS. RIVER HAVEN, INC. ET. AL. Parcels: BSR-133, BSR-133E1, BSR-133E2,BSR-133E3,BSR-133-T, Date: May 2012

Case No: FRESCO’S WATERFRONT BISTRO ST. PETERSBURG, FL County Court, Pinellas County, Florida, Misdemeanor Division Date: April 2007

KMDG-Eichenfeld, LLC / More Holdings, LLC Dr. Orrantia, Helipad, Hillsborough County, (April 2019)

Orlando Motorsports Park, Osceola County, Florida (Oct 2017)

Brunswick County, North Carolina – Construction and Demolition Landfill (Jan 2012)

West Deptford, New Jersey – LS Power – combined cycle power generation facility (September 2008)

Person County, North Carolina – Upper Piedmont Landfill Expansion – (Nov 2007)

Shotwell, North Carolina – Construction and Demolition Landfill, (June 2006)

Brunswick County, North Carolina – North Carolina Recycling, LLC Recycling Facility (July 2004)

City of Elgin, Illinois Ameren Power Generation Facility, (Feb 2001)

Udair County – Entergy Power Generation Facility (Oct 2001)

Bartlett, Illinois, ABB Energy Ventures (Power Generation Facility) (Fall 2000)

Limerick, Pennsylvania, Powerworks, Inc. (Power Generation Facility), (Dec 1999)

Expert Witness (State Pollution Control Board Hearing) Illinois – Testimony (Jan 2004) for modification to Illinois Noise Regulation Section 901.122 Ameren Elgin Facility Site-Specific Noise Emission Limitations (Source: Added at 28 Ill. Reg.11910, effective July 30, 2004) TITLE 35: Environmental Protection Subtitle H: Noise Chapter I: Pollution Control Board Part 901 Sound Emission Standards And Limitations For Property Line Noise Sources
Expert Witness Testimony Quasi-Judicial Hearing Paper Stock Dealers Raleigh, NC, June 2005