CP contracted for underground storage tank removal
Testing performed in tank bed found problematic levels of VOCs
CP excavated 40 cubic yards of impacted soil and 660 gallons of groundwater
Site cleaned below regulation threshold, CP filed MDEP paperwork
Site closed, Job done
1. Stormwater System Inspection
Provides routine inspection and reports for:
60+ catch basins-quarterly
3. Phase I ESA
On behalf of a Lender for a Prospective Buyer, Clean Properties, Inc., performed an ESA in accordance with ASTM E1527-13 of a City block that was redeveloped two decades ago with a 5-story retail mall and parking garage surmounted by a 16-story hotel tower and a 29-story office tower. The ESA included review of previous partial ESAs, asbestos management plans, and MCP remedial reports for adjoining contaminant release sites. Filling in gaps left by previous investigators relative to the numerous previous buildings that occupied the block back to initial development in the 1840s, Clean Properties identified historic gasoline station, auto repair garage, and drycleaner activities that could have impacted underlying soil and groundwater and pose a risk for vapor intrusion. Because current building cover occupies the entire property, Clean Properties identified soil-gas and drainage system testing methods that could effectively and inexpensively evaluate the identified associated potential contaminant risks without disruption of current uses.
4. Phase I ESA
On behalf of a bank funding the renovation of the historic building complex, Clean Properties conducted a Phase I ESA of a property identified on the State Registry of Historic Places. The bank, which had recently expanded into Massachusetts, accepted the developer’s recommendation to use Clean Properties for its due diligence investigation and subsequently added Clean Properties to its list of approved vendors. Clean Properties obtained and reviewed historic AHERA records for hazardous-materials management at the school and compare those records with abatement actions undertaken in preparation for residential renovation of the building complex. Asbestos and lead-based paint were identified in a residential building at the complex as requiring additional abatement prior to proposed uses. Historic use of fuel oil to heat the complex and fuel steam-powered equipment was identified as requiring further evaluation to verify that all associated tanks were removed and no associated releases had occurred. Clean Properties confirmed that all developed portions of the property lie outside the FEMA-designated floodplain of the bounding river/canal system but identified an on-site stormwater drain system as discharging to the canal in violation of it permits, a discharge that was corrected during property renovations.
Phase I/II ESA, Engineering Consultation
On behalf of a consortium of investors in a medical marijuana growth facility proposed for an existing industrial building bordering on a Superfund (NPL) Site, Clean Properties prepared a Phase I ESA of the selected location for the facility. Based on the status of remedial actions at the bordering Superfund Site and monitoring data for soil, groundwater, surface-water, and sediment on and near the property, Superfund release conditions were determined not to pose a significant risk for the proposed use and occupancy of the property; however, repair of fencing along the Superfund Site boundary was determined to be necessary. Testing of suspected potential contaminants in indoor air and in particulate/film deposits on material surfaces in the building was performed to determine cleanup and isolation requirements associated with the current industrial uses of other areas of the building and historic industrial uses of historic areas of the building proposed for the grow facility. Clean Properties further assisted in evaluating the proposed designs of grow units, ventilation, and air-handling equipment. The proposed occupancy area of the building was identified as lying within the FEMA-designated floodplain of the bordering stream; however, the elevation of the building’s foundation surface grade was determined to be above the FEMA-determined flood stage elevation in the area. Clean Properties proposed alternative installation of required electrical and HVAC equipment on piers elevated above the flood level to reduce installation costs on the building roof, which had been determined to be prohibitive over the first decade of operation. Clean Properties also oversaw soil testing and management for off-site disposal of excess materials generated during installation of the piers in the flood zone. Clean Properties’ investigations allowed the consortium to obtain investor funding and contributed to the design of a functional and economically feasible installation.