Boarhead Farms

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Northern sump with sealed cover in place. The plywood was included as a cover over 3/8-inch thick, fitted acrylic sheet to provide added structural stability. The concrete blocks were included to provide temporary pressure while the foam sealant installed at all gaps set. Site Photo 9/20/2018
North sump, after installation of air-tight cover Site Photo 9/20/2018
Plywood cover over southern sump, before fitted acrylic sheet and sealant was put in place. Site Photo 9/20/2018
Upgraded exhaust fan (Broan model L250), approximately doubling outflow volume Site Photo 9/20/2018
Extension of exhaust system Site Photo 9/20/2018
Extension of exhaust system to crest of third floor Site Photo 9/20/2018
Residence, facing approximately west, showing three floors in the living space. The current exhaust system discharge is located on the opposite side of the house just above the first floor eave. Site Photo 6/25/2013
Open floor doors showing entry/egress way to the basement. Foam insulation is removed to enter basement and left in place to mitigate migration of vapors through doors when closed. Floor doors are horizontal and located just inside sliding glass doors at rear of residence. Site Photo 3/22/2016
Basement, facing approximately west, showing spring entrance location (behind post in center of photograph) and non-air tight rubber matting covering the channel between the spring and south sump. At the time of the photograph (June 2013), the floor had been recently cleaned of sediment and was damp. Site Photo 6/25/2013
Basement, facing approximately northwest, showing location of the spring entrance and rubber matting covering the channel between the spring and the south sump (located behind and to the left of the viewer). Site Photo 6/25/2013
Basement, north sump, prior to installation of sump cover Site Photo 6/25/2013
Basement, facing approximately northeast, showing floor recently cleared of sediment. The high-water line is partially visible in the uppermost portion of the photograph. Site Photo 6/25/2013
Basement, showing second fan installed by owner (NuTone model ILF130 bathroom ventilation fan). The original fan was replaced by the owner for unknown reasons at an unknown time. This fan was also replaced as part of the 2018 Removal Action. Site Photo 3/22/2016
Basement, facing approximately southeast, showing the exhaust fan and first run of exhaust piping. The steps on the right of the photograph are the only entry/egress way for the basement. Site Photo 6/25/2013
Basement, showing the original in-line exhaust fan. This fan was replaced at an unknown time by the owner. Site Photo 6/25/2013
Basement, south sump and southern part of channel, soon after installation of non-air tight rubber matting. Site Photo 10/4/2011
Basement, channel between spring to the right and south sump to the left, soon after installation of non-air tight rubber matting. Site Photo 10/4/2011