Lehman Engineers offers comprehensive environmental solutions ranging from prevention and compliance to complete remediation. Professional scientists and geologists are experts in wetlands, threatened and endangered species, hazardous waste, historic structures, and above and underground storage tanks. We serve municipal, commercial, governmental, industrial, financial, institutional, and private clients with the same level of attention to detail and quality during every project. 

Lehman Engineers strikes an optimal balance by providing both environmentally responsible solutions with innovation and efficiency. 

Environmental Services

  • Wetland Investigations, Delineations, Mitigation Design and Permitting
  • PADEP Chapter 105 and USACOE Section 404 Permitting
  • Erosion and Sedimentation Pollution Control Plans
  • Stormwater Management Plans
  • NPDES Permitting and Management
  • Threatened and Endangered Species Studies and Consultation
  • Habitat Assessments
  • Macro-Invertebrae Stream Studies
  • Hydrologic and Hydraulic Studies
  • FEMA Floodplain Management Studies
  • Preparation of FEMA CLOMR Applications
  • Sewage Enforcement Officer Services
  • Septic System Testing, Inspection, and Design
  • Soil Compaction Testing
  • Geologic Core Boring Inspection
  • NEPA Documentation
  • Natural Resource Management, Policies, and Procedures
  • Section 4(f) Evaluations
  • Determination of Effects Reports
  • Social Resource Studies
  • Regulatory Agency Liaison Services
  • Environmental Due Diligence (All Appropriate Inquiry)
  • Phase I, II, and III Environmental Site Assessments (per A.S.T.M. Standards)
  • Underground Storage Tank Inspection (IUM) and Removals (UMR)
  • Above Ground Storage Tank Removals (AMR)
  • PA Chapter §245 (Storage Tank) and §250 (Act 2)
  • Investigations and Cleanups
  • Brownfield Redevelopment and Beneficial Reuse Studies
  • Hydrogeologic Studies
  • Geographic Information System (GIS) Geospatial Analysis
  • Field Services Support (Soil, Sediment, Water, and Vapor Sampling)
  • Regulatory Agency Liaison Services
  • Asbestos Building Inspection (PA DOLI Certified)
  • Vapor Intrusion and Indoor Air Quality Evaluations and Mitigation
  • SPCC/PPC/SPR Plan Preparation
  • Site-Specific Installation Permit (SSIP) Preparation
  • Remedial Feasibility Testing and Analysis
  • Remedial System Design and Implementation
  • Expert Witness Testimony and Third-Party Reviews
  • Human Health Risk Assessment and Evaluation
  • Environmental Compliance Audits
  • Waste Characterization and Waste Management Plan Preparation


  • Environmental Solutions

    Elk County Bridges

    Lehman Engineers was contracted by Elk County to provide engineering and environmental services for the replacement of the Arroyo and Maxwell Run...

  • Environmental Solutions

    Mount Aloysius College

    Founded in 1939, Mount Aloysius College is a private institution with a 165-acre campus in Cresson, Pennsylvania. At the time of the project,...

  • Environmental Solutions

    Remedial System

    The site was historically used as a car dealership that used the 10,000-gallon, steel gasoline UST to fill vehicles that were being sold.  The...

  • Environmental Solutions

    Total Phase Extraction System

    The site was historically used as a gasoline station since the 1950s. In 2008, a release occurred during UST refilling activities, and...

  • Environmental Solutions • Signature Projects

    Sheetz, Inc. (Cumberland, MD)

    P. Joseph Lehman, Inc., Consulting Engineers was retained by Sheetz, Inc. to remove one 12,000 gallon, one 10,000 gallon, one 6,000...

  • Environmental Solutions • Signature Projects

    Scotts Sporting Goods

    P. Joseph Lehman Inc., Consulting Engineers was retained by Scotts Sporting Goods of James Creek, PA to remove two gasoline...

  • Environmental Solutions

    C & J Falchini

    P. Joseph Lehman, Inc., Consulting Engineers was retained by C & J Falchini of Ebensburg to remove one 10,000 gallon steel...

Environmental Team

  • Scott J. Klingenberg

    Environmental Services Director

  • Thomas S. Bilko

    Environmental Scientist

  • Chantal M. Sisko

    Environmental Scientist