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professional consulting services directory

RESEARCH

ENVIRODYNE ENGINEERS

• Toxic Substances • Hazardous Wastes • Environmental Impact Assessment • Air & Water Quality • Government Regulations • Pesticides

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• e n v i r o n m e n t a l engineering analytical chemistry p r i o r i t y p o l l u t a n t analyses e n v i r o n m e n t a l m o n i t o r i n g a n d assessir irdou: iste m o n i t o mg

hazardous waste management • t r a n s p o r t a t i o n engineering • energy engineering • c o n s t r u c t i o n management

Consulting and Research for Government and Industry Environmental Resource Center 2304 Holly Spring Dr. Silver Spring, M D 20904

12161 Lackland Road St L o u i s , Missouri 6 3 1 4 1 (314) 4 3 4 - 6 9 6 0 Baltimore / Chicago / Knoxville / N e w Y o r k

Ground Water Associates, I n c . Consulting Geologists and Hydrologiste •

Q u a n t i t a t i v e and qualitative ground water evaluation· φ • Iron removal by V Y R E D O X process P.O. Box 280 Westerville, Ohio 43081 Cranford, New Jersey 614/882-3136 Arlington, Massachusettes

301/384-7200

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ENTROPY E n v i r o n m e n t a l i s t s Inc. Leaders in S o u r c e Testing, Continuous Monitor Certification, and Hazardous Waste Testing R O B o x 12291 R e s e a r c h T r i a n g l e Park, N C 2 7 7 0 9 In N C 9 1 9 - 7 8 1 - 3 5 5 0 Outside N C 1 - 8 0 0 - E N T R O P Y

GROUNDWATER CONSUL TUNIS

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• Screening of Industrial Waste for EPA Priority _ ^ ^ _ Pollutants using Finnigan OWA-30 G C / M S . • N P D E S & S P D E S Organic & Inorganic Testing. • Drinking Water Analysis to EPA Standards. • Bioassay, Bioaccumulation & Toxicity Studies of Industrial Waste, Municipal Slgdge & Dredge Spoils. • Leachate Potential Studies & Analysis. • Total Instrumental Analysis: A.A., G C / M S , G.C.. I.R., TOC & ΤΟΧ • RCRA Hazardous Waste Testing,

NEW YORK TESTING LABORATORIES 81 Urban Avenue, Westbury, N.Y. 11590 (516)334-7770

GERAGHTY & MILLER, INC. THE NORTH SHORE ATRIUM 6800 JERICHO TPKE SYOSSET N.Y. 11791 (516) 921-6060 ANNAPOLIS BATON ROUGE HARTFORD TAMPA W PALM BEACH HOUSTON DENVER SANTURCE, PR

ENVIRONMENTAL SCIENCE, TECHNOLOGY AND ENGINEERING. ECOLOGICAL ANALYSTS

FNviRoLoqic (JATA HEALTH AND ENVIRONMENTAL DATA-ANALYSIS AND RISK-ASSESSMENT • PESTICIDES • HAZARDOUS WASTES • TOXIC SUBSTANCES IN THE WORKPLACE, AIR, WATER AND SOIL SERVICE TO · Government · Industry · • Consultants · Attorneys · Individuals • P.O. BOX 1438 · PORTLAND, ME. 04104 · (207)773-3020 •

USE THE DIRECTORY SECTION

Chemical and Biological Controls in Forestry

Clayton Environmental Consultants • Induatrlal Hygiene Survey· • AIHA · Accredited end CDC Ucenead Liberator I M • QC/MS, HPLC, X-Ray attraction, AA, and Electron Mtcroacopy (SEM/EDS) • Hezardoua Waal· Management

• Etnlaalon and Ambiant Air Survey· • Engineering Deelgn • Environmental Audita d Materiel Sataty • Expert Teetlmony

miltBimaiHBIrBB.-BWI.IIHBW.WM.MMMUfcMd.l Atlanta, G A

(404) 952-3064

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Edison, NJ

(201) 225-6040

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Windsor, Ont.

(519) 255-9797

W i l l a Y . G a r n e r , Editor Environmental Protection

Agency

J o h n H a r v e y , J r . . Editor Ε I. Du Pont de Nemours & Co. Presents latest uses of chemical and biological control agents in forest pest management. Considers the fate of these agents in the environment, their effect on target and nontarget species, their toxic properties, and their exposure/hazard aspects. Features a description of forest rehabilitation after the eruption of Mt. St. Helens. CONTENTS Historical Overview · Herbicide Use in In­ dustrial Forest Vegetat'on Management a Manipulating Predator Cues for Bark Boc tie Control · Sex Pheromonua and Thmr Potential a Trapping ot Ifis typogmphiit wil.'i Plitromunus a Hocuiovirus A Biological Alternative a Integrated Pest Management in Forestry a Ae'ial Applica­ tion ot Pesticides a Physical Parameters of Aircraft Application a Depos tion ot Agents in Conifers a Droplet Deposition and Drift in Forest Soraying a Aerirfl Sp'ay Drift and Canopy Penetration a Air Cr­ emation in Forested Areas a Peslicid