1. 1Civil Engineering

    General Civil Engineering

    Our staff of Professional Engineers offers over 30 years of experience in the field of Civil Engineering.  We primarily specialize in comprehensive site planning and design of Residential and Commercial stormwater management and drainage system designs; wastewater collection and distribution systems; on-site sewage disposal systems; road design; water distribution and treatment systems; public water supply permitting and installation oversight.  We encourage you to contact us for a more extensive list of additional Civil Engineering tasks and services provided by our team.  We invite you to view representative examples of plans from our portfolio.

  2. 2Land Surveying

    Land & Lot Surveying

    The roots of our company are tied directly to the field of Land Surveying.  We provide our clients with a combined 60 years of experience in disciplines of Land Surveying and Land Planning.  We specialize in property line determinations, boundary disputes and expert witness services in addition to collecting and processing survey data to identify the existing site features that provide the foundation for engineering design and evaluations.

    Our services include, but are not limited to, Lot Layout and Survey Plans for land subdivisions, Approval Not Required (ANR) Plans, Building Permit Plans, As-built Plans, Flood Plain Certifications and ALTA Plans and support.

  3. 3Environmental Consulting

    Environmental/Wetland Consulting

    With a commitment to staying up-to-date with the latest environmental regulations and best management practices, our staff of Wetland Specialists have the expertise in soil science and botanical identification to precisely establish jurisdictional Wetland Resource Areas at the onset of your project.  By properly identifying the potential constraints affecting a site, many un-necessary permitting complications can be avoided.  Our Wetland Specialists contribute to our team approach by lending knowledge and experience to best determine successful strategies to attain the results you desire.

    Our services include Preliminary Wetland Assessments; Wetland Boundary Identification/Delineation of Local, State, and Federal Wetlands; Wetland Mitigation Design & Implementation; Mitigation Monitoring.

    Additionally we prepare and represent our clients in Wetland Protection Act filings such as Abbreviated Notice of Resource Area Delineations (ANRAD), Notice of Intent (NOI), Chapter 91 Waterways filings, Water Quality Certifications, Army Corps of Engineers filings, Massachusetts Endangered Species Act (MESA) filings, Environmental Protection Agency (EPA) filings and EPA Stormwater Pollution Prevention Plan (SWPPP) preparation.

  4. 4Public Water Supply

    Public Water Supply Development

    D&D has extensive experience in the design and permitting of small public water supply systems.  From bedrock and gravel pack well development, to booster station design, to water distribution system layout to small scale water treatment, our Engineers have successfully developed, permitted and implemented small public water supply systems in accordance with the Massachusetts Public Drinking Water Regulations.

    Key Project – Southwick’s Zoo – The Southwick’s Zoo was experiencing issues with system reliability due to a water pump system that had reached its functional life.  Engineers at D&D designed a new Booster Station which satisfied the stringent requirements for reliability of the Zoo.  The system utilized atmospheric storage tanks, a variable frequency drive booster pump system to provide both redundancy and energy efficiency all housed in a new pump house for easy access.


  • Civil Engineering

    General Civil Engineering

    Our staff of Professional Engineers offers over 30 years of experience in the field of Civil Engineering.  We primarily specialize in comprehensive site planning and design of Residential and Commercial stormwater management and drainage system designs; wastewater collection and distribution systems; on-site sewage disposal systems; road design; water distribution and treatment systems; public water supply permitting and installation oversight.  We encourage you to contact us for a more extensive list of additional Civil Engineering tasks and services provided by our team.  We invite you to view representative examples of plans from our portfolio.

  • Land Surveying

    Land & Lot Surveying

    The roots of our company are tied directly to the field of Land Surveying.  We provide our clients with a combined 60 years of experience in disciplines of Land Surveying and Land Planning.  We specialize in property line determinations, boundary disputes and expert witness services in addition to collecting and processing survey data to identify the existing site features that provide the foundation for engineering design and evaluations.

    Our services include, but are not limited to, Lot Layout and Survey Plans for land subdivisions, Approval Not Required (ANR) Plans, Building Permit Plans, As-built Plans, Flood Plain Certifications and ALTA Plans and support.

  • Environmental Consulting

    Environmental/Wetland Consulting

    With a commitment to staying up-to-date with the latest environmental regulations and best management practices, our staff of Wetland Specialists have the expertise in soil science and botanical identification to precisely establish jurisdictional Wetland Resource Areas at the onset of your project.  By properly identifying the potential constraints affecting a site, many un-necessary permitting complications can be avoided.  Our Wetland Specialists contribute to our team approach by lending knowledge and experience to best determine successful strategies to attain the results you desire.

    Our services include Preliminary Wetland Assessments; Wetland Boundary Identification/Delineation of Local, State, and Federal Wetlands; Wetland Mitigation Design & Implementation; Mitigation Monitoring.

    Additionally we prepare and represent our clients in Wetland Protection Act filings such as Abbreviated Notice of Resource Area Delineations (ANRAD), Notice of Intent (NOI), Chapter 91 Waterways filings, Water Quality Certifications, Army Corps of Engineers filings, Massachusetts Endangered Species Act (MESA) filings, Environmental Protection Agency (EPA) filings and EPA Stormwater Pollution Prevention Plan (SWPPP) preparation.

  • Public Water Supply

    Public Water Supply Development

    D&D has extensive experience in the design and permitting of small public water supply systems.  From bedrock and gravel pack well development, to booster station design, to water distribution system layout to small scale water treatment, our Engineers have successfully developed, permitted and implemented small public water supply systems in accordance with the Massachusetts Public Drinking Water Regulations.

    Key Project – Southwick’s Zoo – The Southwick’s Zoo was experiencing issues with system reliability due to a water pump system that had reached its functional life.  Engineers at D&D designed a new Booster Station which satisfied the stringent requirements for reliability of the Zoo.  The system utilized atmospheric storage tanks, a variable frequency drive booster pump system to provide both redundancy and energy efficiency all housed in a new pump house for easy access.