CASE HIST

Toll Brothers:
Design of pre-fit passive radon remediation systems in new homes and activation of system if post-construction indoor radon test is above EPA action limit.

Avalon Properties / GZA Geoenvironmental, Inc. :
Remediation of multiple units in several different apartment complexes covering a wide variety of construction designs and ages.

The Bozzuto Group :
Remediation of multi-family apartment complexes. Soil testing and pre-construction remedial system design.

Charles E. Smith :
Remediation of large office building and follow-up indoor tests confirming less than 2 pCi/l.

ATEC Associates :
Remedial diagnostics, remediation, and testing of several large office buildings.

Bechtel International. :
Detailed soil testing for large office complex that located areas of high radon potential and recommended remedial design. Performed indoor radon tests that confirmed soil potentials.

Fairfax County Public Schools :
Soil testing and subsequent remedial design for new schools.

Loudon County Public Schools :
Design and installation of radon remedial systems in existing schools. Soil testing at new school sites.

Montgomery County Public Schools :
Remediation of over 20 schools using quantitative remedial diagnostics. Follow-up indoor tests confirmed less than 4 pCi/l in every case and less than 1 pCi/l in most cases. Soil testing to evaluate sites for radon potential and designing the level of pre-construction remediation required.

Baltimore County and Howard County Public Schools :
Remediation of elevated indoor radon in complex school buildings using quantitative diagnostics.

Environmental Protection Agency (EPA) Contracts:
1. Analysis of radon concentrations under various HVAC conditions in large government buildings to determine the effects of the HVAC system on radon levels.

2. Determination of the long-term durability of sub-slab ventilation systems by analysis of radon levels versus various system measurements in remediated homes.

Department of Energy (DOE) :
Remediation of elevated indoor radon at the Germantown facility using quantitative diagnostics and design. Follow-up indoor testing procedure.

General Services Administration (GSA) :
Indoor testing of many federally leased office buildings according to GSA protocols and corporate QA/QC plan.

Organizations: Homeowners:

Jeff Klenk or Ron Miller                                                      Victor Shargai
Howard County Public School System                                 2158 Wisconsin Ave., NW
10910 Route 108                                                                Washington, DC 20007
Ellicott City, MD 21042-6198 (202) 333-6410
(410) 313-6699                                                                  John Mitchell
                                                                                           6686 Marian Dr
Steve Billey                                                                         Manassas, VA.
Montgomery County Public Schools                                    (703) 330-6225
Construction Division, Room 804
850 Hungerford Dr.
Rockville, MD 20850                                                          Mrs. Berger
(301) 897-3017                                                                  44215 Palladian Ct.
                                                                                           Ashburn, VA 20147
Reginald Ringgold                                                                (703) 723-7537
Baltimore County Public Schools
Pulaski Park Office
9610 Pulaski Park Dr.                                                         Oscar Bunoan
Baltimore, MD 21220                                                         13021 Dunhill Dr.
(410) 887-0121                                                                  Fair Lakes, VA
                                                                                           (703) 502-0793: home
Eugene Kelly                                                                       (202) 218-5464: cell
Fairfax County Public Schools
Dept. of Facilities Services                                                   Jory Hochberg
10700 Page Ave.                                                                8017 Fallstaff Rd.
Fairfax, VA 22030                                                              McLean, VA
(703) 246-3022                                                                  (703) 356-8395

Jim DeCraft or Les Foldesi                                                 Clay and Mary Britt
VA Bureau of Radiological Health                                       3 Buttonwood Ln.
Department of Health                                                          Bethesda, MD
109 Governor St.                                                                (301) 320-4694
Richmond, VA 23219
(800) 468-0138

Nick Kern                                                                          Bill Knight
The Bozzuto Group                                                            McLean Chase Condominiums
6401 Golden Triangle Dr., Suite 200                                  1956 Kennedy Dr.
Greenbelt, MD 20770-3203                                              McLean, VA
(301) 446-2243                                                                 (703) 556-9262

Dr. Douglas Mose, Director                                               John Simons
Radon Research Project                                                    10818 Crippen Vale Ct.
George Mason University                                                   Reston, VA
Fairfax, VA 22030                                                             (703) 481-5361: home
(703) 273-2282                                                                 (301) 907-8900 X 448: work