Aaron Petersohn Email & Phone Number

New York, United States

Queens, New York, United States

Field Engineer for construction sub-contractor performing concrete restoration on 7 miles of elevated subway rail viaduct, for the Rockways S-line and A-line trains. This includes demolition of spalled concrete and concrete repair including Shotcrete application and Fiber Reinforced Polymer wrap. Working with General Contractor, Engineers, and MTA inspectors.

New York, United States

Project Manager for General Contractor's successful completion of NYC Metropolitan Transit Authority Water Remediation Contract (A-37707), in Subway Stations and Tunnels.Design Build contract; As Project Manager, I was at every site inspection with the MTA team and local Subway Station and Tunnel staff or various Capital Projects teams. We reviewed all defects to assess the discharge points, probable source of the leaks, other concerns. Reviewed the findings with EN-TECH's Engineering team and then draft and submit a Work Plan for each location. Bi-weekly schedule in coordination with MTA Project team, as well as coordinating Emergency Work and shift changes to accomodate MTA operational concerns like access and flagging.On-site review of Work Plans with our construction Project Supervisor. Daily site visits with crew, including review of construction progress; Mobilization, site protection, work access, each drill hole location angle and depth, substrate condition, product being injected, pump pressure, discharge points, communication, cleanup, and demobilization. Submitted daily reports each shift to the MTA. Worked closely with our Safety Manager on each shift on every aspect including working safely around the public on active Subway platforms, work access with scaffolds and ladders on active Subway platforms, hazards, and environmental concerns. Working in Subway Tunnels included access via General Order with flaggers and work trains, while working safely around electrical and other hazards.Worked with our Quality Management team to document all shipping/receiving, inspection of our yards/warehouses/trucks, material handling & storage, etc. Quality Work Plans included our construction Hold Points which were signed off in coordination with our MTA Inspector daily. Our project completed quarterly Quality reviews with MTA C&D Senior Quality Manager.Closeout May 15th 2024 with MTA signoff of 42 jobs in 31 Subway Stations and Tunnels.

New York, New York, United States

Remedial chemical grouting and waterproofing for 3 miles of tunnels and facilities of a new mass transit route bringing Long Island Railroad passengers into Grand Central Station from Queens, New York.With our construction management team, we identify all areas of water infiltration and develop remediation plans for the contractor to execute. This includes walkthrough inspections of tunnels and facilities from Grand Central Station, to the East Side, Roosevelt Island, and Long Island City Queens. Developing water infiltration reports and daily check-ins at locations to keep track of intermittent leaks. We coordinate site access, work schedules, and plan work access via High Rail Platform Trucks, Confined Space, or Scaffolding.On site daily inspections of work being performed with the contractor. Including:- Drilling locations, drilling angles, and depths - Chemical grout used, mixture ratio, mixing procedure, etc.- Pump pressure and injection strategies- Waterproofing system grouting procedures: Remedial Grouting Tubes and Fuko Hoses- Photo and written documentation of all work performed; Time & materials- Supplemental reporting as needed of any new water infiltration- Reporting any other issues encountered on site for review by ESA's General Engineering ConsultantWriting a daily Remedial Grouting Report for the MTA and our partner organizations including maps and detailed work locations, time & quantity of materials, work progress, and water infiltration status. Photos of everything with clear descriptions.Additional responsibilities include verification / signoff on behalf of the MTA for all crew members' hours, equipment, and materials used. Keeping track of contracts, billing, and warranty information for all work locations

Greater New York City Area

Inspection and remediation of building foundations, tunnel walls, utility manholes, subway stations, warehouse floors, roadways, heavy industry plants, and municipal water infrastructure. Engineering analysis to understand the problem and design specific engineered repairs. This includes conditions assessments and determining a survey scope. Field work including elevation surveys ground penetrating radar, drilling analysis with a handheld heavy drill, working with deep soil boring drilling crews, relative humidity, concrete strength testing, crack monitoring, and many other assessments. Repair work for buildings. Our crew does hands on remedial waterproofing Injection, active water migration testing, and also engineering oversight of large-scale building envelope waterproofing projects in close coordination with chemical grouting contractors. We do soil and void stabilization in-house and also oversight of large-scale projects. We do oversight of large-scale slab jacking for concrete re-alignment in warehouses and industrial facilities. My duties also include hands on crew work and controlled inspections as the Professional Engineer's representative. AutoCAD technical drawings and full photo-binder reports. Contractor oversight, construction punch lists, materials and specs, and coordination in working directly with the owner's representative for successful projects.

New York, Ny

Midtown-based engineering firm focused on preservation of existing tall buildings with a broad range of services for our clients. Working directly with Professional Engineer on projects.NYC DOB Facade Inspection and Safety Programs (Local Law 11 - FISP) including up-close inspections of tall building facades. Coordination with Industrial Rope Access team for DOB CD-5 Rigging permits. Development of facade inspection reports and all work necessary to make our buildings safe for residents per local laws and submission requirements of the DOB. Contractor selection and oversight for renovations and repairs. Cost estimating. Developing full sets of Bid documents and specs. Controlled inspection of contractor crews and documentation of work progress and materials. AutoCAD drafting. Engineering reports binders for defect mapping including site maps and photographs. Close coordination with specialized engineering firm partners and subcontractors.

The South Bronx, Ny

The Brook Restoration project involves developing a wetland in the Mott Haven neighborhood of the South Bronx with native plantings to support fauna, similar to the natural brook that ran through the park's site until the late 1800’s. Rainwater harvested from adjacent buildings will be diverted from the combined-sewer to an above ground cistern for irrigation, and below-grade cisterns used to maintain water levels in the wetland. Worked directly with local residents, Biologists, Landscape Architects, NYC Parks Dept, Elected Officials, and Environmental Engineers. Wrote successful funding federal grant applications and budgets. Managed removal of asphalt and first phase of environmental restoration at Brook Park. Worked with teams at NYC Department of Parks and Recreation to incorporate rainwater harvesting and daylighting this historic river into the Capital Plan budget.Project in collaboration with the U.S. National Oceanic and Atmospheric Administration, Wildlife Conservation Society, and New York City Department of Parks and Recreation.

New York, Ny

U.S. Department of Energy funded research and development of domestically-grown biodegradable industrial lubricants. Work included, seeking prospective funding, coordination with our partner academic researchers, IT work, budget reviews to fulfill Federal Contracts and aggregating information for quarterly Federal reviews.

Bachelor Of Architecture, Architecture

Professional 5 year degree program

Historic Preservation Graduate