Engineering Services

Civil Site Design

Our goal is to provide site designs that allow the owner and architect to fulfill their vision for a successful project while providing a seamless integration of the project to the surrounding landscape and infrastructure.

  • Demolition

  • Geometry Layout

  • ADA Accessibility

  • Grading and Drainage

  • Utility Layout and Profiles

  • Stormwater Conveyance

  • Stormwater Management

  • Landscaping

  • Site Lighting

  • Erosion and Sediment Control

  • Construction Estimates

  • Construction Specifications

  • Expert Witness Testimony

Master Planning and Site Evaluations

Our experience with the development of new large-scale projects and with the redevelopment of projects in urban settings provides us the know-how to maximize a site’s potential and avoiding its weaknesses.

  • Site Selection

  • Vehicular and Pedestrian Connectivity

  • Utility Availabilities

  • Balancing Earthwork

  • Research of Local Regulations

  • Identification of Potential Permitting Processes

  • Inspection and Evaluation of Existing Utility Systems and Site Infrastructure

Land Development and Subdivision

The local municipal land development process can be the most challenging process during a project’s design, because it, unlike following a simple list of regulations, requires convincing a group of individuals to vote favorably for the project. Our team has a proven track record of success in this process with thorough research of regulations, early and honest communication with the municipalities, accurate and timely submissions and well prepared and confident meeting presentations.

  • Research of Local Ordinances

  • Pre-submission Coordination Meetings

  • Land Development Plan Preparation

  • Subdivision Plan Preparation

  • Public Meeting Presentations

  • Sewage Planning

  • Zoning Variances

Site Permitting

A successful project involves the owner receiving a finished project which exceeds initial expectations. Our team strives to maintain the focus on that goal by identifying, preparing for and obtaining approvals for all of the permits necessary to reach the project goals while minimizing impacts to design goals and construction schedules.   

  • Individual and General NPDES

  • Chapter 105 General Permits

  • Chapter 102 Erosion and Sediment Pollution Prevention

  • PennDOT Highway Occupancy Permits

  • Wetland Mitigation

  • FEMA Floodplain Management

  • Sub Consultant Coordination for Wetland Delineations, Phase 1 Environmental Analysis, Archeological Surveys, Subsurface Soil Testing and Traffic Impacts Studies.

Construction Administration

Our team takes pride in supporting our projects through construction, ensuring they are built to the standards of our design while also providing us the opportunity to find solutions for unexpected challenges.

  • Bidding Documents

  • Bidding Process Administration

  • Value Engineering

  • Contractor’s Requests for Information Responses

  • Site Inspections

  • Product Submittal Reviews

  • Construction Stakeout

  • Construction Observation

  • Record Keeping

  • Pay Application Reviews

  • Job Conference Management

  • Change Order Reviews

  • Stormwater As-built Certifications

Stormwater & Water Resource Management

Our team has specialized expertise to meet unique and challenging stormwater problems from small retrofit projects to large scale regional or master planning. Whether your project includes planning, new development, permitting & regulatory compliance, or retrofit, we can support your project through every phase including inventory and mapping, modeling & design, interface with regulatory agencies, construction, and long-term operations and maintenance.

  • Retrofit Analysis and Design

  • Pollutant Reduction Plans (PRPs)

  • Chesapeake Bay PRPs

  • Act 167 Plans

  • Water Quality Modeling including SWMM and MapShed

  • Low Impact Development

  • Green Infrastructure Planning and Design

  • Stormwater Master or Regional Plans

  • Operation and Maintenance Assessments and Guides for Post-construction Stormwater Management BMPs

  • Watershed and Lake Management Plans

  • Outreach, Engagement, and Education

  • Hydrology and Hydraulics Analysis

  • Streambank Stabilization and Restoration

  • Floodplain Analysis

  • Infiltration Testing

Structural Engineering

Sweetland Engineering provides structural engineering services through several experienced structural engineering firms.  Our cohesive partnership with these firms allows our clients to receive the value of an integrated civil and structural design through a single contract with Sweetland Engineering. 

  • Retaining Wall Design

  • Culvert Design

  • Underground Utility Vaults and Tunnels

  • Vehicular Bridges

  • Pedestrian Bridges

  • Site Structure Foundations

  • Heavy-Traffic Bearing Structures

Sanitary Sewer Design and Permitting

Each municipality has their own Sewage Enforcement Officer (SEO) who takes care of percolation testing and review for any new on-lot septic systems. Our team works with the local SEO and the Pennsylvania Department of Environmental Protection (DEP) to find a cost effective on-lot design.


  • Preliminary site soil review

  • Coordination with SEO and DEP for soil testing

  • Percolation hole test preparation

  • System design including sizing the piping, absorption area, septic tank, dosing tank, effluent filter, effluent pump and control system

  • Local Sewer Permit and Sewage Facilities Planning Module submissions and coordination with the SEO and DEP

  • Field stakeout of absorption area and system

  • Installation specifications to be used by installer

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Sweetland Engineering...Serving our community for over 47 years. 600 Science Park Road, State College, PA 16803 • 814-237-6518