Meschutt Beach Wastewater Upgrade

An upgraded sewage disposal system reduced the amount of nitrogen entering Peconic Bay by 65%.

PWGC was selected to provide professional engineering services to design an innovative on-site wastewater treatment system to replace the outdated sewage disposal systems at the park. PWGC was honored with a Diamond Award from the American Council of Engineering Companies of New York (ACEC-NY)—the organization’s highest honor—for this project, the region’s first commercial innovative alternative on-site wastewater treatment system (I/A OWTS).

As part of the project, the possibly of greywater reuse was evaluated; unfortunately, due to space and cost constraints, a greywater system could not be included. We designed and installed a new I/A OWTS to replace the outdated and underperforming wastewater treatment system at the waterfront park. This project presented several challenges; in addition to being the first commercial application of I/A OWTS technology in Suffolk County, the project was constrained by a six-month completion window and being located in an area with a high water table.

We met with representatives from Suffolk County’s Parks, Public Works and Health Services Departments to determine the best location for the proposed system; developed an in-depth engineering report, design plans and specifications for a County-approved I/A OWTS (in this instance using a system manufactured by Orenco), and developed an aggressive project schedule to be ready for the targeted opening of the park on Memorial Day Weekend 2016.

PWGC performed the following services:


  1. Performed a field investigation to evaluate the existing conditions.
  2. Prepared an engineering report and design plans for the wastewater treatment system for SCDHS submission.
  3. Addressed SCDHS comments and revise the drawings as required to obtain an approved treatment system.
  4. Prepared applications for letters of non-jurisdiction from NYSDEC.
  5. Prepared technical specifications and budget estimates for the project.
  6. Obtained sediment samples from the existing sewage disposal structures for analysis for abandonment in accordance with SCDHS regulations.


  1. Prepared design documents to be disseminated to contractors.
  2. Prepared proposal pages and a scope of work for obtaining contractor pricing.
  3. Answered contractor questions and issued addendums.
  4. Attended bid opening.


  1. Answered contractor questions.
  2. Reviewed shop drawing submittals.
  3. Perform construction inspections
  4. Prepare as-built plans and engineering certifications.
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