Successes

Sub-Membrane Depressurization System. Reduced radon levels from 4.3 pCi/l to .2 pCi/l.

Successes

Sub-Membrane Depressurization System. Reduced radon levels from 12.0 pCi/l to 1.8 pCi/l.

Successes

Sub Slab Depressurization System. Reduced radon levels from 7.2 pCi/l to .4 pCi/l.

Successes

Sub Slab Depressurization System. Reduced radon levels from 9.6 pCi/l to 2.8 pCi/l.

Successes

Sub Slab Depressurization system. Reduced radon levels from 10.5 pCi/l to .8 pCi/l.

Successes

Sub Slab Depressurization System. Reduced radon levels from 4.3 pCi/l to .8 pCi/l.

Successess

Interior shots of Sub Slab Depressurization System. Reduced radon levels from 5.6 pCi/l to 0.6 pCi/l in 1913 home.

Successes

Exterior shots of Sub Slab Depressurization System. Reduced radon levels from 5.6 pCi/l to 0.6 pCi/l in 1913 home.

 

 

 

Laurelhurst

 January 2016

Starting Radon Level: 15.6

Final Radon Level: 1.6

Rose City Park

 January 2016

Starting Radon Level: 8.0

Final Radon Level: 4.7

South Tabor

 January 2016

Starting Radon Level: 4.0

Final Radon Level: 0.6

Irvington

 January 2016

Starting Radon Level: 6.7

Final Radon Level: 1.9

Concordia

 January 2016

Starting Radon Level: 4.0

Final Radon Level: 1.2

Kenton

 January 2016

Starting Radon Level: 8.2

Final Radon Level: 0.8

Milwaukie

 January 2016

Starting Radon Level: 4.7

Final Radon Level: 1.0

Grant Park

 February 2016

Starting Radon Level: 9.0

Final Radon Level: 1.5

Tualatin

 February 2016

Starting Radon Level: 4.4

Final Radon Level: 0.8

Richmond

 February 2016

Starting Radon Level: 5.9

Final Radon Level: 0.9

Buxton

 February 2016

Starting Radon Level: 29.9

Final Radon Level: 11.0

Gresham

 February 2016

Starting Radon Level: 8.0

Final Radon Level: 6.0

Sumner

 March 2016

Starting Radon Level: 6.2

Final Radon Level: 0.8

Raleigh Hills

 March 2016

Starting Radon Level: 5.2

Final Radon Level: 1.9

Powellhurst-Gilbert

 March 2016

Starting Radon Level: 26.5

Final Radon Level: 1.0

Raleigh Hills

 March 2016

Starting Radon Level: 10.4

Final Radon Level: 1.9

North Plains

 March 2016

Starting Radon Level: 10.0

Final Radon Level: 0.6

Hosford-Abernethy

 March 2016

Starting Radon Level: 4.0

Final Radon Level: 0.6

Russell

 March 2016

Starting Radon Level: 10.0

Final Radon Level: 1.4

Powellhurst-Gilbert

 March 2016

Starting Radon Level: 4.0

Final Radon Level: 1.2

Tualatin

 March 2016

Starting Radon Level: 5.1

Final Radon Level: 1.5

Russell

 March 2016

Starting Radon Level: 10.0

Final Radon Level: 1.4

Roseway

 March 2016

Starting Radon Level: 10.0

Final Radon Level: 3.5

Creston-Kenilworth

 March 2016

Starting Radon Level: 8.0

Final Radon Level: 0.6

Wilkes

 March 2016

Starting Radon Level: 4.0

Final Radon Level: 0.4

Beaumont-Wilshire

 March 2016

Starting Radon Level: 8.3

Final Radon Level: 1.4

Hosford-Abernethy

 April 2016

Starting Radon Level: 15.5

Final Radon Level: 1.1

Overlook

 April 2016

Starting Radon Level: 3.9

Final Radon Level: 0.5

University Park

 April 2016

Starting Radon Level: 6.4

Final Radon Level: 0.7

Gresham

 April 2016

Starting Radon Level: 17.4

Final Radon Level: 0.6

Arbor Lodge

 April 2016

Starting Radon Level: 15.0

Final Radon Level: 1.2

Montavilla

 April 2016

Starting Radon Level: 4.5

Final Radon Level: 1.0

Foster-Powell

 April 2016

Starting Radon Level: 6.5

Final Radon Level: 0.4

Hillsboro

 April 2016

Starting Radon Level: 8.1

Final Radon Level: 0.6

Woodlawn

 April 2016

Starting Radon Level: 8.1

Final Radon Level: 0.6

Hosford-Abernethy

 April 2016

Starting Radon Level: 4.0

Final Radon Level: 1.0

Gresham

 April 2016

Starting Radon Level: 25.0

Final Radon Level: 4.5

Tualatin

 April 2016

Starting Radon Level: 8.0

Final Radon Level: 1.1

Milwaukie

 May 2016

Starting Radon Level: 6.5

Final Radon Level: 0.7

Powellhurst-Gilbert

 May 2016

Starting Radon Level: 7.1

Final Radon Level: 0.6

Oregon City

 May 2016

Starting Radon Level: 10.0

Final Radon Level: 3.0

Scappoose

 May 2016

Starting Radon Level: 6.8

Final Radon Level: 1.0

Gladstone

 May 2016

Starting Radon Level: 7.0

Final Radon Level: 2.5

Sabin

 May 2016

Starting Radon Level: 4.0

Final Radon Level: 0.5

Forest Grove

 May 2016

Starting Radon Level: 22.0

Final Radon Level: 1.4

North Plains

 May 2016

Starting Radon Level: 10.0

Final Radon Level: 0.6

University Park

 May 2016

Starting Radon Level: 4.0

Final Radon Level: 0.4

West Linn

 June 2016

Starting Radon Level: 4.9

Final Radon Level: 0.4

Beaumont-Wilshire

 June 2016

Starting Radon Level: 11.8

Final Radon Level: 1.0

Lents/Powellhurst-Gilbert

 June 2016

Starting Radon Level: 5.3

Final Radon Level: 1.2

Milwaukie

 June 2016

Starting Radon Level: 5.0

Final Radon Level: 0.2

Humboldt

 June 2016

Starting Radon Level: 25.0

Final Radon Level: 0.9

St Johns

 June 2016

Starting Radon Level: 5.9

Final Radon Level: 2.6

Sandy

 June 2016

Starting Radon Level: 4.0

Final Radon Level: 1.3

Sellwood-Mooreland

 June 2016

Starting Radon Level: 5.0

Final Radon Level: 3.4

Milwaukie

 June 2016

Starting Radon Level: 5.0

Final Radon Level: 2.2

Beaumont-Wilshire

 June 2016

Starting Radon Level: 3.0

Final Radon Level: 1.1

Sunnyside

  2016

Starting Radon Level: 5.0

Final Radon Level: 0.3

Newberg

 June 2016

Starting Radon Level: 5.5

Final Radon Level: 1.0

Tigard

 June 2016

Starting Radon Level: 8.0

Final Radon Level: 0.6

Sellwood-Mooreland

 June 2016

Starting Radon Level: 5.0

Final Radon Level: 3.4

Oregon City

 June 2016

Starting Radon Level: 6.2

Final Radon Level: 0.4

Wilkes

 June 2016

Starting Radon Level: 8.7

Final Radon Level: 1.7

Hosford-Abernethy

 June 2016

Starting Radon Level: 5.0

Final Radon Level: 0.9

Montavilla

 June 2016

Starting Radon Level: 6.0

Final Radon Level: 0.9

Lents

 July 2016

Starting Radon Level: 9.0

Final Radon Level: 1.2

Mt. Tabor

 July 2016

Starting Radon Level: 6.3

Final Radon Level: 0.8

Mill Park

 July 2016

Starting Radon Level: 4.3

Final Radon Level: 1.0

Tillamook, OR

 July 2016

Starting Radon Level: 5.2

Final Radon Level: 1.0

Far Southwest

 July 2016

Starting Radon Level: 7.0

Final Radon Level: 1.0

Lake Oswego, OR

 July 2016

Starting Radon Level: 5.4

Final Radon Level: 0.4

Columbia City, OR

 July 2016

Starting Radon Level: 13.6

Final Radon Level: 0.5

Humboldt

 July 2016

Starting Radon Level: 5.0

Final Radon Level: 0.5

North Plain, OR

 July 2016

Starting Radon Level: 10.0

Final Radon Level: 0.6

Southwest Hills

  2016

Starting Radon Level: 6.3

Final Radon Level: 1.5

Argay

 July 2016

Starting Radon Level: 4.0

Final Radon Level: 1.7

Vancouver, WA

 July 2016

Starting Radon Level: 5.2

Final Radon Level: 0.4

Cully

 July 2016

Starting Radon Level: 4.3

Final Radon Level: 0.5

Cathedral Park

 July 2016

Starting Radon Level: 5.3

Final Radon Level: 0.5

Rose City Park

 July 2016

Starting Radon Level: 7.0

Final Radon Level: 0.3

Hazelwood

  2016

Starting Radon Level: 7.0

Final Radon Level: 0.3

Washington County

 December 2015

Starting Radon Level: 6.6

Final Radon Level: 1.0

Banks

 December 2015

Starting Radon Level: 17.0

Final Radon Level: 1.1

Washington County

 December 2015

Starting Radon Level: 4.0

Final Radon Level: 0.6

Portsmouth

 December 2015

Starting Radon Level: 12.0

Final Radon Level: 0.9

Beaverton

 December 2015

Starting Radon Level: 6.8

Final Radon Level: 0.8

Woodlawn

 December 2015

Starting Radon Level: 7.0

Final Radon Level: 1.0

Foster/Powell

 December 2015

Starting Radon Level: 4.0

Final Radon Level: 0.7

Hayhurst

 December 2015

Starting Radon Level: 4.0

Final Radon Level: 0.5

Hillsboro

 November 2015

Starting Radon Level: 4.0

Final Radon Level: 1.7

Milwaukie

 November 2015

Starting Radon Level: 6.1

Final Radon Level: 1.1

Vancouver, WA

 November 2015

Starting Radon Level: 30.8

Final Radon Level: 1.3

Cully

 November 2015

Starting Radon Level: 4.0

Final Radon Level: 0.9

Hillside

 November 2015

Starting Radon Level: 10.5

Final Radon Level: 1.8

Sellwood

 November 2015

Starting Radon Level: 4.7

Final Radon Level: 0.7

Madison South

 November 2015

Starting Radon Level: 9.5

Final Radon Level: 0.9

Milwaukie

 October 2015

Starting Radon Level: 8.4

Final Radon Level: 0.6

Alameda

 October 2015

Starting Radon Level: 20.0

Final Radon Level: 2.0

Newburg

 October 2015

Starting Radon Level: 3.6

Final Radon Level: 0.5

Grant Park

 September 2015

Starting Radon Level: 5.0

Final Radon Level: 0.5

Hosford/Abernethy

 September 2015

Starting Radon Level: 5.3

Final Radon Level: 2.0

Corvallis

 September 2015

Starting Radon Level: 4.0

Final Radon Level: 0.5

University Park

 September 2015

Starting Radon Level: 4.0

Final Radon Level: 0.8

Arbor Lodge

 September 2015

Starting Radon Level: 6.0

Final Radon Level: 0.4

Brentwood/Darlington

 August 2015

Starting Radon Level: 26.0

Final Radon Level: 0.9

Mt. Scott/Arleta

 August 2015

Starting Radon Level: 4.5

Final Radon Level: 1.0

Overlook

 August 2015

Starting Radon Level: 5.9

Final Radon Level: 0.5

Dundee

 July 2015

Starting Radon Level: 14.0

Final Radon Level: 0.8

Lake Oswego

 July 2015

Starting Radon Level: 5.4

Final Radon Level: 0.8

Washington County

 July 2015

Starting Radon Level: 16.3

Final Radon Level: 0.6

Irvington

 June 2015

Starting Radon Level: 4.0

Final Radon Level: 1.1

Sellwood

 June 2015

Starting Radon Level: 5.0

Final Radon Level: 1.0

Alameda

 June 2015

Starting Radon Level: 10.1

Final Radon Level: 2.0

Sabin

 June 2015

Starting Radon Level: 4.4

Final Radon Level: 1.2

Roseway

 June 2015

Starting Radon Level: 13.9

Final Radon Level: 1.0

Russell

 June 2015

Starting Radon Level: 15.0

Final Radon Level: 0.9

Mill Park

 June 2015

Starting Radon Level: 13.0

Final Radon Level: 0.8

Lake Oswego

 June 2015

Starting Radon Level: 4.6

Final Radon Level: 0.8

Woodstock

 May 2015

Starting Radon Level: 4.0

Final Radon Level: 1.1

Cully

 May 2015

Starting Radon Level: 4.0

Final Radon Level: 0.4

Parkrose Heights

 May 2015

Starting Radon Level: 9.0

Final Radon Level: 0.7

Roseway

 May 2015

Starting Radon Level: 4.1

Final Radon Level: 0.8

Gresham

 May 2015

Starting Radon Level: 13.4

Final Radon Level: 1.5

Concordia

 May 2015

Starting Radon Level: 6.0

Final Radon Level: 1.0

Lake Oswego

 May 2015

Starting Radon Level: 5.0

Final Radon Level: 0.3

Concordia

 May 2015

Starting Radon Level: 6.0

Final Radon Level: 3.3

Kenton

 May 2015

Starting Radon Level: 4.1

Final Radon Level: 0.8

Foster/Powell

 May 2015

Starting Radon Level: 10.0

Final Radon Level: 1.1

Vancouver, WA

 May 2015

Starting Radon Level: 21.3

Final Radon Level: 3.0

Beaverton

 May 2015

Starting Radon Level: 6.3

Final Radon Level: 1.0

Mt Scott/Arleta

 May 2015

Starting Radon Level: 14.0

Final Radon Level: 2.5

Arbor Lodge

 May 2015

Starting Radon Level: 7.4

Final Radon Level: 1.0

Lents

 May 2015

Starting Radon Level: 35.0

Final Radon Level: 1.4

Arbor Lodge

 May 2015

Starting Radon Level: 7.4

Final Radon Level: 1.0

Beaumont/Wilshire

 May 2015

Starting Radon Level: 8.0

Final Radon Level: 1.2

St Johns

 May 2015

Starting Radon Level: 4.1

Final Radon Level: 0.4

Portsmouth

 May 2015

Starting Radon Level: 9.0

Final Radon Level: 0.5

Alameda

 May 2015

Starting Radon Level: 7.9

Final Radon Level: 1.5

Sellwood

 May 2015

Starting Radon Level: 6.7

Final Radon Level: 1.0

Kenton

 May 2015

Starting Radon Level: 8.0

Final Radon Level: 1.0

Rose City Park

 May 2015

Starting Radon Level: 7.9

Final Radon Level: 0.4

Mt. Tabor

 April 2015

Starting Radon Level: 4.2

Final Radon Level: 1.2

Lake Oswego

 April 2015

Starting Radon Level: 4.6

Final Radon Level: 0.5

Vancouver, WA

 April 2015

Starting Radon Level: 18.0

Final Radon Level: 2.0

Hosford/Abernethy

 April 2015

Starting Radon Level: 5.3

Final Radon Level: 1.6

Mt Tabor

 April 2015

Starting Radon Level: 8.8

Final Radon Level: 0.8

Salem

 April 2015

Starting Radon Level: 13.8

Final Radon Level: 1.0

Dundee

 April 2015

Starting Radon Level: 10.0

Final Radon Level: 0.5

Humboldt

 April 2015

Starting Radon Level: 4.0

Final Radon Level: 1.0

Washington County

 April 2015

Starting Radon Level: 30.0

Final Radon Level: 0.8

Sellwood

 April 2015

Starting Radon Level: 5.5

Final Radon Level: 1.0

Alameda

 April 2015

Starting Radon Level: 8.0

Final Radon Level: 0.8

Rose City Park

 April 2015

Starting Radon Level: 4.5

Final Radon Level: 0.5

Hazelwood

 April 2015

Starting Radon Level: 5.0

Final Radon Level: 0.7

Centennial

 March 2015

Starting Radon Level: 4.1

Final Radon Level: 0.5

Vancouver, WA

 March 2015

Starting Radon Level: 6.0

Final Radon Level: 1.6

Pleasant Valley

 March 2015

Starting Radon Level: 7.0

Final Radon Level: 2.1

Irvington

 March 2015

Starting Radon Level: 8.0

Final Radon Level: 2.0

Multnomah County

 February 2015

Starting Radon Level: 6.0

Final Radon Level: 0.5

Gresham

 February 2015

Starting Radon Level: 7.0

Final Radon Level: 0.4

Kenton

 February 2015

Starting Radon Level: 10.0

Final Radon Level: 0.8

North Tabor

 February 2015

Starting Radon Level: 12.0

Final Radon Level: 0.6

Southwest Hills

 February 2015

Starting Radon Level: 7.5

Final Radon Level: 0.5

Cully

 February 2015

Starting Radon Level: 15.0

Final Radon Level: 0.8

Arbor Lodge

 February 2015

Starting Radon Level: 14.0

Final Radon Level: 2.3

Richmond

 February 2015

Starting Radon Level: 4.9

Final Radon Level: 1.0

Gresham

 February 2015

Starting Radon Level: 9.4

Final Radon Level: 0.6

Mill Park

 February 2015

Starting Radon Level: 17.1

Final Radon Level: 0.8

Buckman

 February 2015

Starting Radon Level: 7.3

Final Radon Level: 2.0

Vancouver, WA

 February 2015

Starting Radon Level: 16.0

Final Radon Level: 1.7

Maywood Park

 February 2015

Starting Radon Level: 9.9

Final Radon Level: 0.8

Alameda

 February 2015

Starting Radon Level: 5.0

Final Radon Level: 0.8

Vancouver, WA

 February 2015

Starting Radon Level: 8.0

Final Radon Level: 0.7

University Park

 January 2015

Starting Radon Level: 6.0

Final Radon Level: 0.8

Lake Oswego

 January 2015

Starting Radon Level: 6.2

Final Radon Level: 1.4

Lents

 January 2015

Starting Radon Level: 5.4

Final Radon Level: 1.8

Brentwood/Darlington

 December 2014

Starting Radon Level: 4.9

Final Radon Level: 0.8

Rose City Park

 December 2014

Starting Radon Level: 4.0

Final Radon Level: 0.5

Salem

 December 2014

Starting Radon Level: 10.0

Final Radon Level: 0.6

Beaumount/Wilshire

 December 2014

Starting Radon Level: 6.1

Final Radon Level: 0.4

Washington County

 December 2014

Starting Radon Level: 10.0

Final Radon Level: 0.6

Washougal

 November 2014

Starting Radon Level: 10.0

Final Radon Level: 1.5

Madison South

 November 2014

Starting Radon Level: 8.0

Final Radon Level: 0.3

Hayhurst

 November 2014

Starting Radon Level: 5.4

Final Radon Level: 0.3

Rose City Park

 November 2014

Starting Radon Level: 5.0

Final Radon Level: 0.3

Parkrose

 November 2014

Starting Radon Level: 5.0

Final Radon Level: 0.3

King

 November 2014

Starting Radon Level: 4.1

Final Radon Level: 0.4

Cully

 November 2014

Starting Radon Level: 4.1

Final Radon Level: 0.4

Washington County

 November 2014

Starting Radon Level: 4.9

Final Radon Level: 0.5

King

 November 2014

Starting Radon Level: 10.8

Final Radon Level: 0.5

Lake Oswego

 October 2014

Starting Radon Level: 6.0

Final Radon Level: 0.5

Grant Park

 October 2014

Starting Radon Level: 4.5

Final Radon Level: 0.5

Beaverton

 October 2014

Starting Radon Level: 4.0

Final Radon Level: 0.5

Sabin

 October 2014

Starting Radon Level: 9.0

Final Radon Level: 1.5

Rose City Park

 October 2014

Starting Radon Level: 9.6

Final Radon Level: 0.9

Southwest Hills

 October 2014

Starting Radon Level: 6.0

Final Radon Level: 2.0

Lents

 October 2014

Starting Radon Level: 4.5

Final Radon Level: 0.5

Beaumont/Wilshire

 October 2014

Starting Radon Level: 5.8

Final Radon Level: 1.6

Alameda

 October 2014

Starting Radon Level: 5.5

Final Radon Level: 1.0

Mt Tabor

 October 2014

Starting Radon Level: 13.0

Final Radon Level: 0.9

Alameda

 October 2014

Starting Radon Level: 7.0

Final Radon Level: 1.0

Rose City Park

 September 2014

Starting Radon Level: 20.0

Final Radon Level: 0.7

Kerns

 September 2014

Starting Radon Level: 14.0

Final Radon Level: 2.1

Sabin

 September 2014

Starting Radon Level: 8.0

Final Radon Level: 0.4

Buckman

 September 2014

Starting Radon Level: 5.5

Final Radon Level: 2.0

West Linn

 September 2014

Starting Radon Level: 5.0

Final Radon Level: 0.6

Creston/Kenilworth

 September 2014

Starting Radon Level: 6.0

Final Radon Level: 1.0

Washington County

 September 2014

Starting Radon Level: 82.0

Final Radon Level: 1.0

Gresham

 September 2014

Starting Radon Level: 5.3

Final Radon Level: 1.5

Hollywood

 September 2014

Starting Radon Level: 4.3

Final Radon Level: 0.9

Rose City Park

 September 2014

Starting Radon Level: 4.5

Final Radon Level: 0.5

Clackamas County

 August 2014

Starting Radon Level: 14.0

Final Radon Level: 1.0

Sellwood

 August 2014

Starting Radon Level: 5.0

Final Radon Level: 0.7

Arbor Lodge

 August 2014

Starting Radon Level: 7.0

Final Radon Level: 0.3

Concordia

 August 2014

Starting Radon Level: 10.0

Final Radon Level: 1.0

Cully

 August 2014

Starting Radon Level: 5.1

Final Radon Level: 2.2

Beaumont/Wilshire

 August 2014

Starting Radon Level: 4.8

Final Radon Level: 1.2

Wilkes

 August 2014

Starting Radon Level: 4.6

Final Radon Level: 0.7

Washington County

 August 2014

Starting Radon Level: 4.6

Final Radon Level: 1.9

Washington County

 August 2014

Starting Radon Level: 7.7

Final Radon Level: 2.3

Pedmont

 August 2014

Starting Radon Level: 7.0

Final Radon Level: 0.2

Foster/Powell

 August 2014

Starting Radon Level: 6.0

Final Radon Level: 0.7

Sellwood

 August 2014

Starting Radon Level: 15.0

Final Radon Level: 3.1

Overlook

 July 2014

Starting Radon Level: 6.3

Final Radon Level: 1.0

Kenton

 July 2014

Starting Radon Level: 10.3

Final Radon Level: 1.0

Humboldt

 July 2014

Starting Radon Level: 4.7

Final Radon Level: 0.3

Hazelwood

 July 2014

Starting Radon Level: 11.9

Final Radon Level: 0.8

Boise

 July 2014

Starting Radon Level: 8.0

Final Radon Level: 0.8

Piedmont

 July 2014

Starting Radon Level: 8.3

Final Radon Level: 0.6

Montavilla

 July 2014

Starting Radon Level: 8.1

Final Radon Level: 0.5

St Johns

 July 2014

Starting Radon Level: 5.7

Final Radon Level: 1.3

Kenton

 July 2014

Starting Radon Level: 6.2

Final Radon Level: 2.0

Lake Oswego

 July 2014

Starting Radon Level: 12.0

Final Radon Level: 1.1

Washington County

 July 2014

Starting Radon Level: 35.0

Final Radon Level: 0.8

Piedmont

 July 2014

Starting Radon Level: 12.0

Final Radon Level: 1.0

North Tabor

 July 2014

Starting Radon Level: 6.3

Final Radon Level: 0.6

Mt. Scott/Arleta

 June 2014

Starting Radon Level: 10.7

Final Radon Level: 1.0

Multnomah County

 June 2014

Starting Radon Level: 5.0

Final Radon Level: 0.4

Portsmouth

 June 2014

Starting Radon Level: 5.0

Final Radon Level: 0.3

Hillsdale

 June 2014

Starting Radon Level: 7.5

Final Radon Level: 2.9

Madison South

 June 2014

Starting Radon Level: 12.0

Final Radon Level: 1.2

Clackamas County

 June 2014

Starting Radon Level: 7.0

Final Radon Level: 0.3

Humbolt

 June 2014

Starting Radon Level: 6.5

Final Radon Level: 0.3

Creston/Kenilworth

 June 2014

Starting Radon Level: 6.0

Final Radon Level: 2.8

Hillsboro, OR

 June 2014

Starting Radon Level: 10.0

Final Radon Level: 1.7

Humbolt

 June 2014

Starting Radon Level: 9.3

Final Radon Level: 2.0

University Park

 June 2014

Starting Radon Level: 5.0

Final Radon Level: 0.5

Rose City Park

 June 2014

Starting Radon Level: 5.3

Final Radon Level: 0.3

Happy Valley, OR

 June 2014

Starting Radon Level: 5.6

Final Radon Level: 2.6

Clackamas County

 June 2014

Starting Radon Level: 6.1

Final Radon Level: 2.8

Eliot

 May 2014

Starting Radon Level: 14.0

Final Radon Level: 0.5

Parkrose Heights

 May 2014

Starting Radon Level: 19.9

Final Radon Level: 0.9

Rose City Park

 May 2014

Starting Radon Level: 12.0

Final Radon Level: 0.3

Montavilla

 May 2014

Starting Radon Level: 4.4

Final Radon Level: 0.5

Cully

 May 2014

Starting Radon Level: 6.0

Final Radon Level: 0.3

Overlook

 May 2014

Starting Radon Level: 5.0

Final Radon Level: 1.0

Newberg, OR

 April 2014

Starting Radon Level: 17.9

Final Radon Level: 1.0

Ardenwald/Johnson Creek

 April 2014

Starting Radon Level: 5.4

Final Radon Level: 1.9

Beaumont/Wilshire

 April 2014

Starting Radon Level: 6.5

Final Radon Level: 0.5

Rose City Park

 April 2014

Starting Radon Level: 10.9

Final Radon Level: 0.5

Woodlawn

 April 2014

Starting Radon Level: 5.6

Final Radon Level: 0.9

Oregon City, OR

 April 2014

Starting Radon Level: 7.2

Final Radon Level: 0.4

Arbor Lodge

 April 2014

Starting Radon Level: 4.4

Final Radon Level: 0.9

St. Johns

 April 2014

Starting Radon Level: 8.7

Final Radon Level: 0.3

Clackamas County

 April 2014

Starting Radon Level: 6.0

Final Radon Level: 0.3

St. Johns

 April 2014

Starting Radon Level: 6.4

Final Radon Level: 0.8

Hillside

 April 2014

Starting Radon Level: 9.1

Final Radon Level: 0.5

Glanfair

 April 2014

Starting Radon Level: 6.9

Final Radon Level: 1.4

Washington County

 April 2014

Starting Radon Level: 8.6

Final Radon Level: 0.7

Brooklyn Action Corps

 April 2014

Starting Radon Level: 4.0

Final Radon Level: 1.0

Eastmoreland

 March 2014

Starting Radon Level: 8.0

Final Radon Level: 3.2

Camas, WA

 March 2014

Starting Radon Level: 32.7

Final Radon Level: 1.7

King

 March 2014

Starting Radon Level: 10.0

Final Radon Level: 1.8

Concordia

 March 2014

Starting Radon Level: 16.0

Final Radon Level: 1.5

Clackamas County

 March 2014

Starting Radon Level: 8.7

Final Radon Level: 0.7

Richmond

 March 2014

Starting Radon Level: 6.0

Final Radon Level: 1.3

Richmond

 March 2014

Starting Radon Level: 7.3

Final Radon Level: 1.0

Kenton

 March 2014

Starting Radon Level: 30.0

Final Radon Level: 0.5

Irvington

 March 2014

Starting Radon Level: 7.4

Final Radon Level: 0.2

Salem, OR

 February 2014

Starting Radon Level: 6.0

Final Radon Level: 0.6

Sellwood

 February 2014

Starting Radon Level: 4.9

Final Radon Level: 1.0

Powell

 February 2014

Starting Radon Level: 5.0

Final Radon Level: 1.5

Alameda

 February 2014

Starting Radon Level: 13.0

Final Radon Level: 0.4

Montvilla

 February 2014

Starting Radon Level: 5.7

Final Radon Level: 0.4

Sellwood

 February 2014

Starting Radon Level: 5.4

Final Radon Level: 0.4

Eastmoreland

 February 2014

Starting Radon Level: 4.5

Final Radon Level: 1.2

Cully

 February 2014

Starting Radon Level: 8.3

Final Radon Level: 3.5

Piedmont

 February 2014

Starting Radon Level: 4.7

Final Radon Level: 2.0

Mt. Scott/Arleta

 February 2014

Starting Radon Level: 8.0

Final Radon Level: 2.2

Powellhurst/Gilbert

 February 2014

Starting Radon Level: 11.6

Final Radon Level: 0.4

Mt. Scott/Arleta

 February 2014

Starting Radon Level: 8.8

Final Radon Level: 0.5

Lents

 February 2014

Starting Radon Level: 8.3

Final Radon Level: 2.2

Lents

 February 2014

Starting Radon Level: 8.3

Final Radon Level: 2.2

Beaumont/Wilshire

 February 2014

Starting Radon Level: 8.0

Final Radon Level: 1.0

St. Johns

 February 2014

Starting Radon Level: 5.7

Final Radon Level: 1.3

Hillsboro, OR

 January 2014

Starting Radon Level: 4.0

Final Radon Level: 0.9

Rose City Park

 January 2014

Starting Radon Level: 10.0

Final Radon Level: 0.2

Milwaukie, OR

 January 2013

Starting Radon Level: 7.0

Final Radon Level: 0.9

Rose City Park

 January 2013

Starting Radon Level: 8.0

Final Radon Level: 2.8

Brentwood/Darlington

 January 2014

Starting Radon Level: 4.6

Final Radon Level: 0.7

Linnton

 January 2013

Starting Radon Level: 5.8

Final Radon Level: 1.0

Sellwood

 January 2014

Starting Radon Level: 5.8

Final Radon Level: 1.0

Sabin

 January 2013

Starting Radon Level: 9.0

Final Radon Level: 3.1

Arbor Lodge

 January 2013

Starting Radon Level: 8.0

Final Radon Level: 2.1

Arbor Lodge

 January 2014

Starting Radon Level: 8.0

Final Radon Level: 2.1

St. Johns

 January 2013

Starting Radon Level: 5.5

Final Radon Level: 1.7

Piedmont

 January 2014

Starting Radon Level: 24.0

Final Radon Level: 2.9

Irvington

 January 2014

Starting Radon Level: 6.0

Final Radon Level: 1.2

Tualatin, OR

 January 2014

Starting Radon Level: 8.0

Final Radon Level: 0.5

Reed

 December 2013

Starting Radon Level: 8.1

Final Radon Level: 0.7

Concordia

 December 2013

Starting Radon Level: 20.0

Final Radon Level: 0.8

Roseway

 December 2013

Starting Radon Level: 16.0

Final Radon Level: 0.8

Richmond

 December 2013

Starting Radon Level: 4.2

Final Radon Level: 2.3

Southwest Hills

 December 2013

Starting Radon Level: 3.2

Final Radon Level: 1.1

Corvalis, OR

 December 2013

Starting Radon Level: 5.0

Final Radon Level: 1.0

Brentwood/Darlington

 December 2013

Starting Radon Level: 8.5

Final Radon Level: 1.6

Montavilla

 December 2013

Starting Radon Level: 9.4

Final Radon Level: 1.4

Cathedral Park

 December 2013

Starting Radon Level: 4.3

Final Radon Level: 1.0

Woodlawn

 December 2013

Starting Radon Level: 4.3

Final Radon Level: 0.8

Beaumont/Wilshire

 December 2013

Starting Radon Level: 16.0

Final Radon Level: 1.0

Foster/Powell

 December 2013

Starting Radon Level: 6.0

Final Radon Level: 1.0

Lents

 December 2013

Starting Radon Level: 11.1

Final Radon Level: 1.4

Forest Grove, OR

 December 2013

Starting Radon Level: 5.0

Final Radon Level: 1.0

Rose City Park

 December 2013

Starting Radon Level: 8.2

Final Radon Level: 1.5

Rose City Park

 December 2013

Starting Radon Level: 6.5

Final Radon Level: 0.9

Beaverton, OR

 December 2013

Starting Radon Level: 4.6

Final Radon Level: 0.9

Hollywood

 November 2013

Starting Radon Level: 9.2

Final Radon Level: 2.5

Sabin/Irvington

 November 2013

Starting Radon Level: 7.0

Final Radon Level: 3.5

Benton County

 November 2013

Starting Radon Level: 6.0

Final Radon Level: 0.5

Woodstock

 November 2013

Starting Radon Level: 19.1

Final Radon Level: 3.2

Lake Oswego, OR

 November 2013

Starting Radon Level: 5.2

Final Radon Level: 2.5

Ashcreek

 November 2013

Starting Radon Level: 5.5

Final Radon Level: 2.5

Woodstock

 October 2013

Starting Radon Level: 6.8

Final Radon Level: 2.0

Parkrose

 November 2013

Starting Radon Level: 5.0

Final Radon Level: 0.4

Astoria, OR

 November 2013

Starting Radon Level: 18.0

Final Radon Level: 2.0

Hillside

 November 2013

Starting Radon Level: 4.5

Final Radon Level: 3.0

Sellwood

 October 2013

Starting Radon Level: 6.8

Final Radon Level: 2.7

Hazelwood

 October 2013

Starting Radon Level: 4.4

Final Radon Level: 0.9

Lents

 October 2013

Starting Radon Level: 8.3

Final Radon Level: 2.1

Roseway

 October 2013

Starting Radon Level: 6.0

Final Radon Level: 2.0

Concordia

 October 2013

Starting Radon Level: 3.6

Final Radon Level: 0.4

Arbor Lodge

 October 2013

Starting Radon Level: 4.0

Final Radon Level: 1.0

Eastmoreland

 October 2013

Starting Radon Level: 5.0

Final Radon Level: 1.2

St. Johns

 October 2013

Starting Radon Level: 7.0

Final Radon Level: 0.6

Lake Oswego, OR

 October 2013

Starting Radon Level: 3.9

Final Radon Level: 1.0

Mill Park

 October 2013

Starting Radon Level: 11.5

Final Radon Level: 1.5

Foster/Powell

 October 2013

Starting Radon Level: 8.0

Final Radon Level: 0.7

Vernon

 October 2013

Starting Radon Level: 9.5

Final Radon Level: 1.0

Kenton

 October 2013

Starting Radon Level: 4.6

Final Radon Level: 0.7

Foster/Powell

 October 2013

Starting Radon Level: 3.3

Final Radon Level: 1.0

Humbolt

 October 2013

Starting Radon Level: 5.9

Final Radon Level: 0.8

Roseway

 October 2013

Starting Radon Level: 4.0

Final Radon Level: 0.7

Montavilla

 October 2013

Starting Radon Level: 16.0

Final Radon Level: 0.7

Washington County

 October 2013

Starting Radon Level: 8.0

Final Radon Level: 0.7

Roseway

 September 2013

Starting Radon Level: 12.0

Final Radon Level: 1.0

Roseway

 September 2013

Starting Radon Level: 18.6

Final Radon Level: 0.8

Washington County

 September 2013

Starting Radon Level: 4.1

Final Radon Level: 1.6

Hosford/Abernethy

 September 2013

Starting Radon Level: 8.0

Final Radon Level: 0.3

West Linn, OR

 September 2013

Starting Radon Level: 8.0

Final Radon Level: 0.4

Alameda

 September 2013

Starting Radon Level: 4.3

Final Radon Level: 0.5

Gresham, OR

 September 2013

Starting Radon Level: 4.8

Final Radon Level: 0.9

Beaumont/Wilshire

 August 2013

Starting Radon Level: 8.5

Final Radon Level: 2.0

Parkrose Heights

 August 2013

Starting Radon Level: 16.7

Final Radon Level: 0.5

Kenton

 August 2013

Starting Radon Level: 8.5

Final Radon Level: 1.0

Richmond

 August 2013

Starting Radon Level: 8.0

Final Radon Level: 1.0

Sabin

 August 2016

Starting Radon Level: 5.0

Final Radon Level: 0.4

Lake Oswego, OR

 August 2013

Starting Radon Level: 12.9

Final Radon Level: 0.8

Piedmont

 August 2013

Starting Radon Level: 5.7

Final Radon Level: 0.8

Concordia

 August 2013

Starting Radon Level: 8.7

Final Radon Level: 1.5

Montavilla

 August 2013

Starting Radon Level: 6.0

Final Radon Level: 0.3

Lents

 August 2013

Starting Radon Level: 6.0

Final Radon Level: 0.3

Hosford/Abernethy

 August 2013

Starting Radon Level: 21.4

Final Radon Level: 3.6

Portsmouth

 August 2013

Starting Radon Level: 15.0

Final Radon Level: 1.1

Mill Park

 August 2013

Starting Radon Level: 8.0

Final Radon Level: 1.3

Boise

 August 2013

Starting Radon Level: 5.2

Final Radon Level: 1.0

Irvington

 August 2013

Starting Radon Level: 7.0

Final Radon Level: 1.0

Rose City Park

 August 2013

Starting Radon Level: 5.0

Final Radon Level: 0.8

Eastmoreland

 August 2013

Starting Radon Level: 8.0

Final Radon Level: 1.1

Hayhurst

 July 2013

Starting Radon Level: 4.2

Final Radon Level: 0.3

Marion County

 July 2013

Starting Radon Level: 30.0

Final Radon Level: 2.0

Overlook

 July 2013

Starting Radon Level: 8.0

Final Radon Level: 0.7

Beaumont/Wilshire

 July 2013

Starting Radon Level: 24.0

Final Radon Level: 1.3

Irvington

 July 2013

Starting Radon Level: 4.7

Final Radon Level: 1.0

Centennial

 July 2013

Starting Radon Level: 21.0

Final Radon Level: 1.4

Piedmont

 July 2013

Starting Radon Level: 6.0

Final Radon Level: 1.7

Piedmont

 July 2013

Starting Radon Level: 6.0

Final Radon Level: 1.7

Madison South

 July 2013

Starting Radon Level: 4.4

Final Radon Level: 0.6

Hazelwood

 July 2013

Starting Radon Level: 7.7

Final Radon Level: 1.1

Sullivan's Gulch

 July 2013

Starting Radon Level: 7.6

Final Radon Level: 0.9

Salem, OR

 July 2013

Starting Radon Level: 45.0

Final Radon Level: 0.5

Rose City Park

 July 2013

Starting Radon Level: 10.0

Final Radon Level: 1.0

Gresham, OR

 July 2013

Starting Radon Level: 15.2

Final Radon Level: 1.3

Concordia

 July 2013

Starting Radon Level: 25.0

Final Radon Level: 1.0

Reed

 June 2013

Starting Radon Level: 7.9

Final Radon Level: 1.2

Sellwood

 June 2013

Starting Radon Level: 6.6

Final Radon Level: 2.0

Rose City Park

 June 2013

Starting Radon Level: 5.0

Final Radon Level: 0.7

Roseway

 June 2013

Starting Radon Level: 10.0

Final Radon Level: 0.7

Mt Tabor

 June 2013

Starting Radon Level: 18.0

Final Radon Level: 1.0

Kerns

 May 2013

Starting Radon Level: 6.0

Final Radon Level: 1.2

Eastmoreland

 May 2013

Starting Radon Level: 10.0

Final Radon Level: 1.5

Corvalis, OR

 May 2013

Starting Radon Level: 4.6

Final Radon Level: 0.5

Arbor Lodge

 May 2013

Starting Radon Level: 6.0

Final Radon Level: 0.6

Arbor Lodge

 May 2013

Starting Radon Level: 6.0

Final Radon Level: 0.6

Parkrose

 May 2013

Starting Radon Level: 11.6

Final Radon Level: 0.9

Roseway

 May 2013

Starting Radon Level: 11.0

Final Radon Level: 1.3

Alameda

 May 2013

Starting Radon Level: 7.0

Final Radon Level: 0.9

Portsmouth

 April 2013

Starting Radon Level: 10.0

Final Radon Level: 1.0

Sabin

 April 2013

Starting Radon Level: 10.0

Final Radon Level: 3.6

Overlook

 April 2013

Starting Radon Level: 9.0

Final Radon Level: 1.4

St Johns

 April 2013

Starting Radon Level: 8.0

Final Radon Level: 0.9

Washington County

 April 2013

Starting Radon Level: 8.0

Final Radon Level: 1.0

Washington County

 April 2013

Starting Radon Level: 33.0

Final Radon Level: 0.8

Arbor Lodge

 April 2013

Starting Radon Level: 12.0

Final Radon Level: 0.5

Montavilla

 April 2013

Starting Radon Level: 4.7

Final Radon Level: 0.5

Mt Scott/Arleta

 March 2013

Starting Radon Level: 32.8

Final Radon Level: 0.7

Sherwood, OR

 March 2013

Starting Radon Level: 20.0

Final Radon Level: 1.0

Roseway

 March 2013

Starting Radon Level: 17.0

Final Radon Level: 1.4

University Park

 March 2013

Starting Radon Level: 8.0

Final Radon Level: 0.5

Lake Oswego, OR

 March 2013

Starting Radon Level: 6.0

Final Radon Level: 0.8

Rose City Park

 March 2013

Starting Radon Level: 7.8

Final Radon Level: 1.0

Piedmont

 March 2013

Starting Radon Level: 14.0

Final Radon Level: 0.4

Montavilla

 March 2013

Starting Radon Level: 5.2

Final Radon Level: 1.7

Piedmont

 March 2013

Starting Radon Level: 7.2

Final Radon Level: 0.6

Gladstone

 March 2013

Starting Radon Level: 4.1

Final Radon Level: 0.7

Washington County

 March 2013

Starting Radon Level: 7.6

Final Radon Level: 0.5

Madison South

 March 2013

Starting Radon Level: 6.6

Final Radon Level: 0.5

West Linn, OR

 March 2013

Starting Radon Level: 5.9

Final Radon Level: 0.5

Roseway

 February 2013

Starting Radon Level: 4.7

Final Radon Level: 1.2

Mt Scott/Arleta

 February 2013

Starting Radon Level: 7.3

Final Radon Level: 1.5

Beaumont/Wilshire

 February 2013

Starting Radon Level: 48.0

Final Radon Level: 2.8

Rose City Park

 February 2013

Starting Radon Level: 14.0

Final Radon Level: 0.4

Lake Oswego, OR

 February 2013

Starting Radon Level: 6.5

Final Radon Level: 2.9

Northwest District

 February 2013

Starting Radon Level: 4.0

Final Radon Level: 0.4

Kenton

 February 2013

Starting Radon Level: 7.3

Final Radon Level: 1.9

Cathedral Park

 February 2013

Starting Radon Level: 5.1

Final Radon Level: 1.7

Kenton

 February 2013

Starting Radon Level: 16.0

Final Radon Level: 2.0

Woodstock

 February 2013

Starting Radon Level: 6.0

Final Radon Level: 2.6

Parkrose Heights

 February 2013

Starting Radon Level: 13.0

Final Radon Level: 0.5

Piedmont

 February 2013

Starting Radon Level: 5.7

Final Radon Level: 1.4

Beaumont/Wilshire

 January 2013

Starting Radon Level: 22.0

Final Radon Level: 0.5

Rose City Park

 January 2013

Starting Radon Level: 4.8

Final Radon Level: 0.5

Rose City Park

 January 2013

Starting Radon Level: 6.9

Final Radon Level: 2.2

Sellwood

 January 2013

Starting Radon Level: 3.9

Final Radon Level: 2.2

Sellwood

 January 2013

Starting Radon Level: 8.5

Final Radon Level: 2.4

Concordia

  2016

Starting Radon Level: 4.4

Final Radon Level: 0.3

Alameda

 January 2013

Starting Radon Level: 5.3

Final Radon Level: 1.3

Hosford/Abernethy

 January 2013

Starting Radon Level: 6.2

Final Radon Level: 1.0

Beaumont/Wilshire

 January 2013

Starting Radon Level: 9.2

Final Radon Level: 2.6

Bridlemile

 January 2013

Starting Radon Level: 8.0

Final Radon Level: 0.4

Rose City Park

 January 2013

Starting Radon Level: 4.0

Final Radon Level: 0.8

Mill Park

 January 2013

Starting Radon Level: 40.0

Final Radon Level: 1.1

Sellwood

 December 2012

Starting Radon Level: 5.9

Final Radon Level: 1.2

St Johns

 December 2012

Starting Radon Level: 4.1

Final Radon Level: 0.7

Irvington

 December 2012

Starting Radon Level: 5.0

Final Radon Level: 0.4

King

 December 2012

Starting Radon Level: 4.7

Final Radon Level: 1.2

Beaverton, OR

 December 2012

Starting Radon Level: 3.9

Final Radon Level: 1.4

Eastmoreland

 December 2012

Starting Radon Level: 5.0

Final Radon Level: 1.0

South Tabor

 December 2012

Starting Radon Level: 5.1

Final Radon Level: 3.2

Corvallis, OR

 December 2012

Starting Radon Level: 5.0

Final Radon Level: 0.8

Irvington

 December 2012

Starting Radon Level: 5.8

Final Radon Level: 0.8

Buckman

 November 2012

Starting Radon Level: 5.0

Final Radon Level: 1.2

Creston/Kenilworth

 November 2012

Starting Radon Level: 6.3

Final Radon Level: 1.1

Richmond

 November 2012

Starting Radon Level: 5.5

Final Radon Level: 1.5

Vernon

 November 2012

Starting Radon Level: 17.0

Final Radon Level: 1.5

Beaumont/Wilshire

 November 2012

Starting Radon Level: 8.2

Final Radon Level: 1.0

Washington County

 November 2012

Starting Radon Level: 4.5

Final Radon Level: 1.5

Arbor Lodge

 November 2012

Starting Radon Level: 8.8

Final Radon Level: 0.4

Rose City Park

 November 2012

Starting Radon Level: 4.0

Final Radon Level: 1.3

Concordia

 November 2012

Starting Radon Level: 4.0

Final Radon Level: 0.7

Beaverton, OR

 November 2012

Starting Radon Level: 5.2

Final Radon Level: 1.6

Montavilla

 November 2012

Starting Radon Level: 10.6

Final Radon Level: 1.4

Roseway

 November 2012

Starting Radon Level: 20.9

Final Radon Level: 1.5

Sabin

 November 2012

Starting Radon Level: 4.9

Final Radon Level: 3.0

Hillsdale

 November 2012

Starting Radon Level: 6.7

Final Radon Level: 1.6

Alameda

 October 2012

Starting Radon Level: 7.0

Final Radon Level: 0.3

Milwaukie, OR

 October 2012

Starting Radon Level: 5.4

Final Radon Level: 0.9

Beaumont/Wishire

 October 2012

Starting Radon Level: 10.8

Final Radon Level: 0.5

Richmond

 October 2012

Starting Radon Level: 12.5

Final Radon Level: 1.0

Woodlawn

 October 2012

Starting Radon Level: 5.2

Final Radon Level: 2.0

Cully

 October 2012

Starting Radon Level: 14.4

Final Radon Level: 3.8

Arbor Lodge

 October 2012

Starting Radon Level: 11.0

Final Radon Level: 0.7

Grant Park

 October 2012

Starting Radon Level: 5.7

Final Radon Level: 1.0

Grant Park

 October 2012

Starting Radon Level: 4.9

Final Radon Level: 2.5

Rose City Park

 October 2012

Starting Radon Level: 18.2

Final Radon Level: 0.6

Creston/Kenilworth

 October 2012

Starting Radon Level: 6.4

Final Radon Level: 0.6

Mt Tabor

 October 2012

Starting Radon Level: 5.0

Final Radon Level: 1.0

Richmond

 October 2012

Starting Radon Level: 7.4

Final Radon Level: 1.4

Beaumont/Wilshire

 September 2012

Starting Radon Level: 4.3

Final Radon Level: 0.5

Cully

 September 2012

Starting Radon Level: 6.1

Final Radon Level: 2.1

West Linn, OR

 September 2012

Starting Radon Level: 5.6

Final Radon Level: 1.2

Concordia

 September 2012

Starting Radon Level: 8.7

Final Radon Level: 0.5

Brentwood/Darlington

 September 2012

Starting Radon Level: 6.0

Final Radon Level: 1.0

Rose City Park

 September 2012

Starting Radon Level: 4.6

Final Radon Level: 2.5

South Tabor

 September 2012

Starting Radon Level: 10.3

Final Radon Level: 1.2

Kenton

 September 2012

Starting Radon Level: 14.0

Final Radon Level: 0.5

Sabin

 September 2012

Starting Radon Level: 8.0

Final Radon Level: 0.4

Alameda

 September 2012

Starting Radon Level: 9.5

Final Radon Level: 0.5

Kenton

 August 2012

Starting Radon Level: 10.0

Final Radon Level: 0.4

Clackamas County

 August 2012

Starting Radon Level: 6.4

Final Radon Level: 1.0

Cully

 August 2012

Starting Radon Level: 4.3

Final Radon Level: 0.4

Maplewood

 August 2012

Starting Radon Level: 5.0

Final Radon Level: 0.5

Sabin

 August 2012

Starting Radon Level: 12.0

Final Radon Level: 1.3

Maplewood

 August 2012

Starting Radon Level: 9.0

Final Radon Level: 0.5

Washington County

 August 2012

Starting Radon Level: 4.6

Final Radon Level: 0.7

Washington County

 August 2012

Starting Radon Level: 6.1

Final Radon Level: 2.2

Roseway

 August 2012

Starting Radon Level: 8.0

Final Radon Level: 0.5

Woodlawn

 August 2012

Starting Radon Level: 5.5

Final Radon Level: 1.0

Concordia

 August 2012

Starting Radon Level: 3.4

Final Radon Level: 0.5

University PArk

 August 2012

Starting Radon Level: 8.0

Final Radon Level: 3.3

Washington County

 July 2012

Starting Radon Level: 9.4

Final Radon Level: 0.5

Woodstock

 July 2012

Starting Radon Level: 4.6

Final Radon Level: 1.5

Sellwood

 July 2012

Starting Radon Level: 10.0

Final Radon Level: 2.6

Washington County

 July 2012

Starting Radon Level: 5.2

Final Radon Level: 0.4

Eliot

 July 2012

Starting Radon Level: 6.0

Final Radon Level: 2.1

Roseway

 July 2012

Starting Radon Level: 11.4

Final Radon Level: 0.5

Salem

 July 2012

Starting Radon Level: 6.0

Final Radon Level: 1.3

Overlook

 July 2012

Starting Radon Level: 10.3

Final Radon Level: 0.6

Damascus

 June 2016

Starting Radon Level: 5.4

Final Radon Level: 0.6

Mt Tabor

 June 2012

Starting Radon Level: 5.5

Final Radon Level: 2.4

Gresham

 June 2012

Starting Radon Level: 7.8

Final Radon Level: 2.5

Woodlawn

 June 2012

Starting Radon Level: 4.9

Final Radon Level: 1.6

Foster/Powell

 June 2012

Starting Radon Level: 9.0

Final Radon Level: 0.5

Montavilla

 June 2012

Starting Radon Level: 12.4

Final Radon Level: 1.9

Alameda

 June 2012

Starting Radon Level: 6.2

Final Radon Level: 0.8

Arbor Lodge

 June 2012

Starting Radon Level: 5.8

Final Radon Level: 1.0

Piedmont

 June 2012

Starting Radon Level: 9.1

Final Radon Level: 1.3

Hosfprd/Abernethy

 June 2012

Starting Radon Level: 7.8

Final Radon Level: 0.2

Sabin

 June 2012

Starting Radon Level: 12.9

Final Radon Level: 0.6

Vernon

 June 2012

Starting Radon Level: 5.5

Final Radon Level: 0.9

Alameda

 June 2012

Starting Radon Level: 10.2

Final Radon Level: 0.3

Damascus

 June 2012

Starting Radon Level: 8.4

Final Radon Level: 0.5

King

 June 2012

Starting Radon Level: 12.0

Final Radon Level: 0.6

King

 June 2012

Starting Radon Level: 10.5

Final Radon Level: 0.3

Creston/Kenilworth

 May 2012

Starting Radon Level: 6.5

Final Radon Level: 0.8

Montavilla

 May 2012

Starting Radon Level: 8.5

Final Radon Level: 0.8

Sunnyside

 May 2012

Starting Radon Level: 6.3

Final Radon Level: 0.9

Beaumont/Wilshire

 May 2012

Starting Radon Level: 8.3

Final Radon Level: 0.3

Kenton

 May 2012

Starting Radon Level: 7.1

Final Radon Level: 2.4

Laurelhurst

 May 2012

Starting Radon Level: 7.5

Final Radon Level: 1.3

Grant Park

 May 2012

Starting Radon Level: 7.3

Final Radon Level: 0.4

Corvallis, OR

 May 2012

Starting Radon Level: 5.2

Final Radon Level: 0.5

Portsmouth

 May 2012

Starting Radon Level: 11.3

Final Radon Level: 0.8

Madison

 May 2012

Starting Radon Level: 22.4

Final Radon Level: 0.8

Beaumont/Wilshire

 May 2012

Starting Radon Level: 7.6

Final Radon Level: 0.6