Municipal Water/Wastewater Engineering.


This experience has included over 25 water and wastewater facility planning studies and/or designs pertaining to water treatment, wastewater treatment, collection system design, combined sewer overflows and sludge processing and disposal. 


Massachusetts Water Resources Authority; Boston, MA

As the regional office manager for Peer Consultants in Cambridge, MA, participated in the preparation of all three facility plan studies for the newly formed MWRA. 

Subconsultant to Camp Dresser & McKee

Wastewater Treatment Facility Plan study:  Facilities design assessed preliminary, primary and secondary treatment operations to handle up to 500 MGD and high-flow management facilities in excess of 1,000 MGD.  

Subconsultant to Black & Veatch Engineers 

Residual Management Feasibility Plan Study:  Program entailed a thorough review of sludge conditioning, dewatering and treatment by composting, incineration and pelletizing the sludge.  Process also reviewed and recommended emergency sludge, grit, and screenings disposal.  Assessments focused on a detailed characterization of sludge and its leachate, technology evaluation relative to composting, incineration and land disposal of sludge, and permit evaluations for each alternative.  

Subconsultant to CH2M-Hill 

Combined Sewer Overflow Facility Plan Study:  Tasks conducted as part of this study included the formulation of a sampling and monitoring program, and the evaluation of off-line storage facilities as a treatment control option, and detailed evaluations pertaining to the incorporation of best management practices (BMPs) for abating pollutant loadings from combined sewer collection systems.  


Boston Water and Sewer Commission; Boston, MA    

Consultant to the Boston Water and Sewer Commission responsible for developing a CSO monitoring program.  Assisted in program development, health and safety training of field crews, and provided technical assistance in the selection of monitoring locations and the installation of flow recording equipment.  The primary focus of this program was on the collection of accurate flow monitoring data and conventional water quality data reflective of the 10 catchment areas selected for monitoring.  


Various Municipalities throughout FL, IL, WI, MA, NH, and ME    

Project engineer for the preparation and review of over 20 municipal wastewater facility plan reports in compliance with the provisions of the Construction Grant Program.  Projects have ranged from small trickling filter plants for rural communities to advanced tertiary plants for major municipalities.


Washington, DC Water and Sewer Authority, Washington, DC    

Project engineer for the design of tertiary filters at the Blue Plains Wastewater Treatment Plant in Washington, DC.  Tasks included the preparation of predesign documents, process and instrumentation diagrams, equipment specifications, and the coordination and review of design drawings.  


City of Bath; Bath, Maine    

Construction management liaison for municipal wastewater district during upgrade of sludge conditioning, sludge dewatering and stabilization facility construction.  Program was completed three months ahead of schedule and $0.5 million under budget.  

Project manager for the upgrade of the City of Bath secondary wastewater treatment facility and the preparation of a combined sewer overflow facilities plan report.  Responsible for the day-to-day management of this major secondary treatment facility renovation that includes new pump stations, headworks, septage receiving facilities, sludge dewatering equipment and polymer feed systems, lime stabilization equipment, diffused aeration, primary and secondary sedimentation and chlorination/dechlorination.  The CSO portion of this program focused on the formulation of a study to characterize the nature and extent of overflows and the identification of a long-range plan to systematically mitigate these discharges.  


Subconsultant to Parsons Engineers; Lima, Peru Office    

Senior design engineer for completing a wastewater treatment plant evaluation in Rancaqua, Chile.  This predesign study identified the recommended master plan for the next 20 years.  


Town of Bar Harbor; Bar Harbor, ME

Design and technical review for upgrade of oxidation ditch, clarifiers, chlorination system and pump station for the Hulls Cove wastewater treatment plant in Bar Harbor, ME.  


City of Portsmouth Department of Public Works; Portsmouth, NH    

Project manager for the City of Portsmouth Water and Sewer Operational Study.  The final report identified a series of opportunities for cost reduction through capital improvements, management modifications, and/or increased efficiency in the Water and Sewer Division.  Evaluations included an assessment for implementing contract operations and privatization.  


Various clients through WI, IL, ME, and MA    

Project engineer responsible for the physical evaluation of sewer collection systems and the recommendation for capital improvements to mitigate infiltration and inflow (I/I) into the sewer system.  Participated in various I/I investigations, Sewer System Evaluation Surveys (SSES), treatment technologies evaluations, and cost-effectiveness analysis.  


City of Rockland; Rockland, ME    

Served as program manager and senior engineer for the Wastewater Treatment Plant (WWTP) Relocation Study for the City of Rockland, ME.  The scope of this project was to identify potential sites for relocating the existing WWTP, develop conceptual design data for the proposed sites, determine cost estimates for relocating the facilities, and calculate the potential impacts on the sewer user fee and property tax base structure.  


Various municipalities throughout New England    

Served as the program manager and/or senior engineer for the evaluation and design of wastewater pumping stations.  These assignments have included:  Harwood Street PS, Commercial Street PS, Wing Farm PS, Hyde Park PS, Farrin Place PS, and the Landfill PS in Bath, ME; pump stations in Hull, MA; pump stations in Brunswick, ME; and, the Hulls Cove PS in Bar Harbor, ME.  


Governor Dummer Academy and United Water; Village of Byfield, MA    

Completed a Wastewater System Evaluation Report outlining the necessary improvements for bringing the Governor Dummer advanced WWTP into compliance with the NPDES permit.  Evaluated the impacts of seasonal I/I on the WWTP operation, and recommended a series of remediation activities.  Also assessed the reason for elevated levels of copper in the effluent and provided recommendation for dealing with this occurrence.  


City of Newport and United Water; Newport, RI    

Prepared updated Operation and Maintenance (O&M) Manuals on behalf of the City of Newport and United Water to address the requirements stipulated by the RIDEM.  The O&M Manuals were provided in three volumes that collectively provide the O&M procedures for the entire Newport wastewater system, including the WWTPs, CSO treatment facilities, and Privately-Owned Wastewater Facilities.  


Wayland Sewerage Commission and United Water; Wayland, MA    

Completed an updated Facility Plan review and recommendation for expanding the package treatment facility installed in the early 1970s.  The evaluation addressed increased flows and pollutant loadings anticipated as a result of development associated with Wayland Commons.  A series of options were formulated, evaluated and cost estimates provided for each alternative.  


Yarmouth Mayflower Place; West Yarmouth, MA    

Prepared a Return to Compliance Report for the tertiary WWTP at the Yarmouth Mayflower Place continuing care retirement facility.  The scope included a complete analysis of the treatment works and its current capacity to meet the existing groundwater discharge permit.  A series of remedial measures in order to return to compliance were identified and subsequently implemented.  


Kennebec Sanitary Treatment District; Waterville, ME    

Conducted a Combined Sewer Overflow Facility Plan Study to identify the sources of I/I contributing to overflow along the District’s interceptor and at the head to the WWTP.  Coordination with each of the contributing communities (Fairfield, Waterville, Winslow, and Benton) was necessary and a matrix of I/I removal, in-line storage, and pump station upgrades were identified in the comprehensive solution.  


Town of Hull and United Water; Hull, MA    

Prepared the Odor Control Analysis Report for the Hull WWTP.  In general, the original odor control system had functioned adequately, but in warm weather when odors were elevated and the rotary sludge thickener is operated, excessive hydrogen sulfide is present and the odor control system cannot control the odors.  The scope of this study was to define the source of odors and their relative air flow and concentrations of odor causing pollutants; and assess the options for mitigating the odors and formulate a recommended plan for implementation.  


City of Tampa, FL and City of Tallahassee, FL    

Project engineer responsible for the development and implementation of non-point source pollution control sampling programs in Tallahassee and Tamps, FL.  Culmination of these studies was the formulation of a master plan for mitigating phosphorus loadings to lakes where eutrophication potentially was a concern.  


City of Holyoke and United Water; Holyoke, MA    

Senior technical consultant to United Water and the City of Holyoke, MA for the implementation of flood control and combined sewer overflow (CSO) system operations and reporting.  The flood control and CSO assets are interdependent and thus operated and managed as an integrated asset.  Mr. Crawford has served as the technical liaison for the City of Holyoke, to the Army Corps of Engineers, FEMA, U.S.EPA, and the State of Massachusetts on both flood control inspections and upgrades and CSO improvements over the past 10 years.  


City of Holyoke; Holyoke, MA    

Participated as a senior technical consultant for certifying to FEMA that the Holyoke Flood Damage Reduction System (FDRS) satisfies the requirements set forth in 44 CFR 65.10.  The Holyoke FDRS consists of over 16,200 linear feet of concrete floodwalls, 2,100 linear feet of earthen dikes, seven flood control pumping stations, an extensive network of toe drains, 24 drainage structures that penetrate the floodwall, 18 stop log structures, and numerous tailraces associated with both active and abandoned hydroelectric facilities.  Mr. Crawford participated in the assessment of the interior drainage and pumping capabilities to handle the 100-year base flood, assess the condition and functionality of the toe drain network, conducted an inventory of the drainage structures and stop log structures (and confirmed their functionality as designed), and prepared the updated O&M Manual to comply with the requirements outlined in 44 CFR 65.10.  The Holyoke FDRS was one of the first flood control systems in New England approved by FEMA based on the certification provided by the engineering consultants hired by the City of Holyoke.  


U.S.EPA, Washington, DC    

Project engineer for the preparation of the U.S.EPA Construction Needs Analysis for wastewater treatment facilities.  Tasks included conducting site visits across the northeastern United States to assess existing treatment facilities, formulate improvements or construction needs and develop cost estimates for completing these upgrades.  The culmination of this effort was the preparation of the U.S.EPA document Wastewater Needs Analysis that was submitted to Congress.  

Participates in several studies to evaluate the long-term variability, treatability and fate of priority toxic pollutants in Publicly Owned Treatment Works and in Combined Sewer Overflows.  

Fate of Priority Pollutants in POTWs:  Responsible for 10 of the 50 POTWs sampled as part of this exhaustive review to identify the level of pollutants, and the fate of the pollutants to be treated, air stripped, or accumulated in the sludge stream.  

Fate of Priority Pollutants in POTWs – 30-Day Study:  Program manager for this study to document the variability and treatability of toxic pollutants at a POTW that treats a diverse and highly industrialized wastewater over a 30-day period.  

Fate of Priority Pollutants in CSOs:  Project manager for the nationwide full-scale combined sewer overflow toxic pollutant study.  Assessed the viability of monitoring combined sewer overflow events within 65 cities in the United States.  Responsible for work plan development, field site evaluations in 13 major metropolitan areas, subcontractor selection, supervision of the daily activities of three subcontractors, data evaluation and subsequent U.S.EPA publication which summarized the findings of the study.  The program was tailored to develop a sampling plan to monitor toxic pollutants in combined sanitary/stormwater collection systems during wet weather conditions, and to estimate the magnitude, source and fate of priority toxic pollutants.  Program evaluated a wide range of control technologies (in line storage, off-line storage, swirl concentrators, micro-screens, primary treatment in conjunction with disinfection, etc.) for mitigating CSO impacts.  


MWRA and CH2M Hill; Boston, MA    

Design engineer responsible for a detailed assessment and predesign of potable water treatment facilities for the 500 MGD Massachusetts Water Resource Authority treatment facilities in Boston.  Analysis included corrosion control, treatment for trace organics, disinfection byproduct evaluation, and turbidity control (surface water treatment Rule).  


Pine Springs Lake Association; Waterboro, ME and Gray Water District;  Gray, ME    

The Amendments to the Safe Drinking Water Act require that all public water systems protect against corrosion byproducts such as lead and copper.  Studies were conducted in order to assess water quality and to evaluate the need for instituting corrosion control to prevent the leaching of copper and lead from the distribution systems of the Pine Springs Lake Water Company and the Town of Gray Water District.  


Town of Friendship; Friendship, Maine    

Conducted a Long-Term Potable Water System Analysis to replace the network of private bedrock wells that served the Town of Friendship. The analysis was complicated by the fact that a series of leaking underground storage tanks had contaminated multiple wells.  A recommended well field was identified, pump tests were completed to determine the long-term yield, water quality was characterized, a treatment train was prescribed for treating iron and radon and a distribution network was designed for serving as a community water supply.


Lebanon Water Department; Lebanon, NH    

The intake structure to the Lebanon Water Department was experiencing problems with both surface and frazil ice.  This assignment entailed evaluating the original design and refining the intake structure design to eliminate the seasonal problems encountered.  Modifications included retrofitting the intake infiltration gallery within the surface water supply and increasing the capacity of the inlet pipeline.


Lebanon Water Department; Lebanon, NH    

The Lebanon Water Treatment Plant was experiencing an array of hydraulic restrictions during peak demand periods.  The scope of this assignment was to prepare a hydraulic model to analyze the unit operations under a variety of hydraulic head conditions.  The hydraulic model was used to identify which unit operations were hydraulically limiting during peak demand.  Modifications were implemented based on the results of the hydraulic model.