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Ladewig_Matt_TRC Resume TRCcompanies.com MATTHEW LADEWIG, CLM EDUCATION M.S., Aquatic Resource Ecology and Management, University of Michigan, 2006 B.A., Physical Geography, University of Illinois at Urbana-Champaign, 2000 PROFESSIONAL REGISTRATIONS/CERTIFICATIONS North American Lake Management Society – Certified Lake Manager AREAS OF EXPERTISE Mr. Ladewig has program management and technical experience in the following general areas: • Lake and Water Resources Management • Assessment and Monitoring Program of Benthic Macroinvertebrate and Habitats • Biological and Water Quality Surveys • Environmental Impact Assessment • Aquatic Macrophyte Monitoring and Management REPRESENTATIVE EXPERIENCE Mr. Ladewig is a Certified Lake Manager and ecologist with more than 18 years of experience in the monitoring, modeling, and management of aquatic ecosystems. He has completed work on more than 100 water bodies for a variety of clients, including water suppliers, state and municipal governments, lake associations, and private landowners. These include comprehensive lake diagnostic/feasibility studies and assessments, development of lake management plans, design and oversight of nutrient inactivation (alum) projects, permitting, and compliance monitoring. Mr. Ladewig is also an experienced taxonomist who has analyzed thousands of macroinvertebrate samples collected from freshwater and marine habitats. His taxonomic experience also extends to a wide variety of other biological resources, including fish, birds, aquatic plants, and a number of rare species. City of Amesbury Department of Public Works, Permitting and Oversight of Buffered Alum Treatment at Lake Attitash – Amesbury and Merrimac, MA Mr. Ladewig served as Permitting Lead for a nutrient inactivation project designed to reduce the internal load of phosphorus to Lake Attitash, part of the City’s drinking water supply system. Presented the project in front of the Amesbury and Merrimac Conservation Commissions and successfully obtained Orders of Conditions to proceed with the project. Also assisted the Department of Public Works with development of technical specifications for the Request for Proposals to implement the project. Provided feedback to the city regarding the proposals submitted and assisted with contractor oversight. The application of buffered alum to Lake Attitash will significantly reduce in-lake phosphorus concentrations and the occurrence of severe cyanobacteria blooms. City of Worcester, Indian Lake Alum Dosing Station Conceptual Design – Worcester, MA Mr. Ladewig completed analysis of phosphorus loading into Indian Lake from Ararat Brook, the primary tributary and largest source of phosphorus to the lake. The results of this analysis were used to design a dosing station that injects polyaluminum chloride (PAC) into Ararat Brook to inactivate incoming phosphorus. The system was envisioned as an optimal solution for reducing the biologically available 2 Matthew Ladewig, CLM phosphorus within the lake’s water column which has resulted in recurring algal blooms and issuance of recreational health advisories due to high densities of potentially toxigenic cyanobacteria. TRC’s involvement in this project also included final design, permitting, and construction oversight. Aquarion Water Company, Reservoir and Watershed Assessment for the Mianus River and North Stamford Reservoir Systems – Greenwich, Stamford, and New Canaan, CT Mr. Ladewig provided senior technical guidance to the project team for comprehensive assessment of the Mianus and North Stamford watersheds. The work included aquatic plant mapping of six pond and reservoir systems in the watershed along with assessment of 18 stream locations. The program was designed to evaluate these sites quarterly for one year and analysis included detailed flow measurements, aquatic plant mapping, extensive water quality assessment, sediment quality assessment, and the establishment of remote long-term flow monitoring locations. A final watershed and reservoir management plan was issued at the completion of the study. Among the recommendations, aeration, sonication, and alum were targeted to address water quality improvements. Quaboag and Quacumquasit Lake Association (QQLA), In-Pond Alum Treatment Scoping for South Pond – Sturbridge, Brookfield, and East Brookfield, MA Mr. Ladewig completed analysis of phosphorus loading at South Pond based on sediment sampling completed and prior watershed loading assessments. Based on these results, it was estimated that internal phosphorus loading accounted for more than half of the total annual phosphorus load in South Pond. This was a substantially larger share of the loading than indicated by MassDEP’s TMDL completed in the early 2000s. Although watershed loading has been reduced, these findings suggest that increases in internal loading threaten to undo the progress made to date. To address this, Mr. Ladewig provided QQLA and the three municipalities with a plan for in-pond inactivation of sediment phosphorus. Funding for final design, permitting, and implementation of this project has been successfully secured. Massachusetts Water Resources Authority (MWRA), Reservoir Monitoring Program – MA Since 2013, Mr. Ladewig has served as Project Director or Manager for comprehensive annual surveys at ten source and emergency reservoir areas jointly managed by MWRA and the Massachusetts Department of Conservation and Recreation. This includes water quality monitoring in the emergency reservoirs, including Chestnut Hill Reservoir, which was treated with alum in 2021. Additionally, aquatic vegetation mapping is completed in all reservoirs. Mr. Ladewig provides monitoring and management recommendations for each reservoir as part of the annual project report. Providence Water Supply Board, Moswansicut Reservoir Alum Treatment Monitoring and Oversight – Scituate, RI Mr. Ladewig served as Project Manager overseeing a sediment nutrient inactivation (alum) implementation program for Moswansicut Reservoir, a 286-acre reservoir. Following extensive study of five secondary reservoirs in the Providence Water reservoir network, developed a long-term management plan for each reservoir. Due to excessive internal phosphorus loading and recurring cyanobacteria blooms, Providence Water elected to move forward with priority implementation of the management plan at Moswansicut Reservoir, which is located near Providence Water’s primary source water reservoir. In response, provided Providence Water with bid specifications to solicit competitive bids from highly qualified application firms. Mr. Ladewig continues to assist Providence Water with water quality 3 Matthew Ladewig, CLM monitoring, including operation of a real-time data buoy, to track the results of the nutrient inactivation program. Town of Concord, Development of a Watershed Management Plan for White Pond – Concord, MA Mr. Ladewig prepared a Quality Assurance Project Plan for the implementation of a comprehensive biological, groundwater, surface water and sediment sampling program at White Pond, a sensitive kettlehole pond and community resource with recurring algae blooms and declining long-term water quality trends. The results from these efforts were used to develop nutrient and hydrologic budgets and complete a watershed management plan with prioritized short- and long-term recommendations. Recommendations addressed in-pond, shoreline, and watershed management issues, including stormwater improvements, slope restoration, and in-pond nutrient inactivation. Town of Plymouth, Bartlett Pond Watershed Assessment – Plymouth, MA Mr. Ladewig served as Project Manager of the design and implementation of the first comprehensive assessment of Bartlett Pond and its watersheds. Developed a watershed management plan and presented findings at a series of public meetings. After suffering a cyanobacteria bloom and high bacteria indicator counts in 2018, the Town of Plymouth commissioned a comprehensive study of Bartlett Pond and its watershed to assess and address the many management issues facing the pond. Although existing data were limited, the presence of various risk factors implied a high likelihood of multiple important sources of nutrients and bacteria. Additionally, the geographic setting of the pond suggested the potential for complex interactions between fresh and saltwater influence, surface and groundwater inputs, aquatic macrophytes and algae, and external and internal loading, each combination of which could yield different environmental consequences for the pond, beach, and community. Addressed these issues by providing the Town with a custom-tailored program of detailed data collection and analysis, including physical, biological, water quality, and sediment quality components. The data from these study components were used to develop a one-dimensional model of in-pond water quality and biological response over time. In turn, this model and the watershed source tracking results were used to develop a management and implementation plan that included prioritized physical, chemical, biological, and policy- based lake and watershed management recommendations. Town of Barrington, Phosphorus Reduction Analysis for Brickyard Pond – Barrington, RI Mr. Ladewig developed a US EPA-approved QAPP for this project to ensure the collection of high-quality primary data and appropriate use of secondary data in meeting project goals. Data collection and analysis were used to estimate the annualized phosphorus loading from each stormwater and non-stormwater source. This included field reconnaissance, which was completed along the shorelines of the pond to document and map specific areas of erosion to quantify the levels of loading. Sediment samples and in- pond water quality profiles completed during the warm season captured the extent of anoxia and potential phosphorus release in bottom waters. Waterfowl inputs were assessed through dedicated and opportunistic surveys. Prioritized management actions and developed conceptual designs and approaches to address both the stormwater and non-stormwater sources of phosphorus. A stormwater management plan and BMP engineering design for the man-made Brickyard Pond in Barrington, RI was developed after the Rhode Island Department of Environmental Management (RIDEM) prepared a TMDL for the pond to address impairments due to excessive phosphorus. 4 Matthew Ladewig, CLM Providence Water Supply Board, Design of a Nutrient Inactivation Program for Moswansicut Reservoir – Scituate, RI Mr. Ladewig developed and implemented field and laboratory investigations to design a cost-effective nutrient inactivation and oxygenation program in Moswansicut Reservoir. Coordinated with state agencies to ensure the proper permitting of program prior to implementation. The development of this program is part of a long-term management program to address excess nutrients and recurring algae blooms in the reservoir. Town of Wellesley, Phytoplankton and Water Quality Monitoring of Morses Pond – Wellesley, MA Mr. Ladewig conducted monitoring of in-lake conditions at Morses Pond, a 103-acre lake within a highly urbanized setting. This included water quality sampling, Secchi disk readings, and phytoplankton samples to monitor the effectiveness of an alum dosing station at the mouth of the primary tributary to the pond. Town of Westford, Development of Nutrient Budgets for Four Water Bodies – Westford, MA Mr. Ladewig designed and implemented a field program to identify key sources of nutrients for four Town- managed lakes. The results of the field program were used to develop nutrient budgets for each water body and provide cost-effective prioritized recommendations for reducing and mitigating nutrient loads, including in-pond alum. Nutrient sources evaluated included stormwater, streamflow, groundwater, and internal loading. SPECIALIZED TRAINING • Alum for Phosphorus Control in Lakes and Ponds, 8-hour Workshop (North American Lake Management Society) • 40-hour OSHA HAZWOPER Training • Boat Massachusetts Boat Safety Certification • 8-hour Offshore Water Survival Certification • SafeGulf Marine Safety Certification PROFESSIONAL AFFILIATIONS Rhode Island Environmental Monitoring Collaborative, Appointed Member, 2013 to present Northern Rhode Island Conservation District: Healthy Farm, Healthy Watershed, Technical Steering Committee Member, 2019 to 2021 RECENT PUBLICATIONS AND PRESENTATIONS Ladewig, M. D. 2021. “Harmful Algal Blooms: Management and Control.” Presented at Environmental Business Council Virtual Webinar “Beyond PFAS – What Other Emerging Contaminants Should We Be Concerned With?” May 18, 2021. Virtual. Ladewig, M. D. 2019. “Big Problems, Limited Data: Going from 0 to 60 to Assess and Address HABs, Pathogens, Emerging Contaminants, and More in a Problematic Coastal Pond.” Presented at North American Lake Management Society 39th Annual Symposium. November 2019. Burlington, VT. Ladewig, M. D. 2019. “Managing Cyanobacteria in Lakes and Ponds.” Presented at Lakes and Ponds Association (LAPA) West Symposium. October 5, 2019. Pittsfield, MA. 5 Matthew Ladewig, CLM Ladewig, M. D. 2019. “Don’t Leave it to Beaver: Comprehensive Pond Restoration in the Face of Wildlife-enhanced Stormwater Impacts.” Presented at Massachusetts Congress of Lake and Pond Associations. Annual Workshop. April 12, 2019. Westboro, MA. Ladewig, M. D. 2017 “So Your Pond Has Issues…Now What?” Presented at Save the Lakes Rhode Island Annual Workshop. April 27, 2017. Johnston, RI. Ladewig, M. D. 2017 “Where's Walden: A Look at the Evolving Health of One of Massachusetts’ Most Treasured Water Resources.” Presented at Massachusetts Congress of Lake and Pond Associations. Massachusetts Division of Fisheries & Wildlife. April 7, 2017. Westborough, MA. Ladewig, M. D. 2015. “Quantifying Pollutant Loads from Lake Shorelines Using Stormwater First-flush Samplers.” Presented at New England Association of Environmental Biologists 39th Annual Meeting Joint with the New Hampshire Water/Watershed Conference. March 2015. Bartlett, NH. Ladewig, M. D., and C. D. Nielsen. 2014. “Use of Stormwater First-flush Samplers to Quantify Shoreline Pollutant Sources.” Presented at New England Chapter of the North American Lake Management Society, 2014 Annual Meeting. June 2014. Storrs, CT.