Gradient

Principals

Manu Sharma, M.S., P.E.
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Education

M.B.A., Boston College

M.S., Civil Engineering, Syracuse University

B.Tech., Civil Engineering,
IIT, Bombay

Licensed Professional Engineer

Expertise

  • Contaminant Fate & Transport
  • Environmental Forensics
  • Hydraulic Fracturing
  • Risk-based Remediation
  • Cost Allocation/Liability Assessment
  • Water Resources

Manu Sharma, M.S., P.E.

President

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Mr. Sharma consults on a wide range of environmental sciences topics, including water quality, contaminant fate and transport modeling, risk assessment, hazardous waste site cleanups, and environmental cost allocation.   With more than 25 years of consulting experience, he has successfully applied these skills to solve a range of complex problems, from assessing health risks associated with chemicals in products to developing cost-effective remedial solutions at both small and extremely large contaminated sites.  He has led investigations, risk assessments, and remedial actions at Superfund, RCRA, and state sites, and for mergers and acquisitions at:  chemical plants, MGPs, mineral mining/processing, landfills, Brownfields, dry cleaners, and manufacturing facilities in the US and abroad.  Mr. Sharma has worked extensively with chlorinated solvents, NAPLs, pesticides, PCBs, dioxin, petroleum hydrocarbons, mercury,  PFCs, and hydraulic fracturing constituents.  He has served as an expert on cases related to multi-PRP liability assessment and cost allocation, contaminant transport, remedial investigation and design, standard of care, and water resource development. 

Education

M.B.A., Boston College

M.S., Civil Engineering, Syracuse University

B.Tech., Civil Engineering,
IIT, Bombay

Licensed Professional Engineer

Expertise

  • Contaminant Fate & Transport
  • Environmental Forensics
  • Hydraulic Fracturing
  • Risk-based Remediation
  • Cost Allocation/Liability Assessment
  • Water Resources

Services

Representative Projects

LNAPL Fate Evaluation:  Provided expert testimony regarding the transport of and remedial strategy for a large gasoline LNAPL plume associated with a petroleum refinery that was the subject of a RCRA health endangerment lawsuit.

Remediation Standard of Care:  Provided expert testimony at an arbitration regarding the standard of care used by an environmental contractor in designing and implementing a groundwater pump and treat remedy at a Superfund Site that failed due to metals precipitation.

DNAPL Remedial Strategy:  Led a multi-year investigation and remedy development process at a complex, multi-party Superfund Site with pine tar and creosote related groundwater and sediment contamination. 

Urban Waterway Allocation:  Developed a risk-based cost allocation model that accounted for sources and relative risks posed by mercury, dioxins, and PAHs in sediments.   

Sediment Remediation and Forensics:  Developed an ecological risk-based sediment remediation strategy for a stream affected by PCBs and PAHs contributed by multiple sources.  Reassessed the impact of the presence of perfluorinated compounds on selected remedy.

Hydraulic Fracturing Risk Evaluation:  Assessed fate/transport and human health risks associated with HF additives and flowback constituents in tight shale formations in the US.  Submitted work to US EPA and other agencies.

Personal Care Product Risk Assessment:  Developed a framework to conduct screening-level environmental risk assessments for personal care product ingredients, which is being used to rank ingredients and make substitution decisions.

Vapor Intrusion Risk Assessment:  Evaluated vapor intrusion and related on-site and off-site risks associated with chlorinated solvents (PCE, TCE, DCE) plume originating at a Superfund site.  Assessment commended and approved by US EPA.

Remedy Negotiations & Design:  Developed a risk-based soil and groundwater remedial strategy for a chemical plant, which was part of a property transaction between two multi-national companies.  Chemicals of concern were VOCs and pesticides.

Selected Publications

Flewelling, SA; Sharma, M.  2014. "Constraints on upward migration of hydraulic fracturing fluid and brine." Ground Water 52 : 9-19.

Sharma, M.  2011. "Modeling Drinking Water Related Human Health Risks from Hydraulic Fracturing (HF) Additives." US EPA Hydraulic Fracturing Workshop, Arlington, VA

Thakali, S; Sharma, M; Verslycke, T.  2008. "Environmental Safety Ranking Framework For Surfactants In Personal Care Products (PCPs)." Presented at the Society for Risk Analysis Annual Meeting, Boston, MA

Sharma, M.  2004. "Vapor intrusion - EPA vapor intrusion model reliability and role of background concentrations in risk assessments." Risk Policy Rep. 11 : 42-43.

Sharma, M; Saba, T; Bittner, T.  2003. "Optimization of Groundwater Pump and Treat Systems Using Numerical Modeling and the Monte Carlo Approach." Presented at National Ground Water Association (NGWA) Midsouth Focus Conference, 19p.