WEBSTER ENVIRONMENTAL ASSOCIATES, INC.
SUMMARY OF RECENT ODOR CONTROL EXPERIENCE
* Please click on a project to view the project description.
	PLANT	ODOR		TYPE OF ODOR CONTROL	YEAR
PROJECT/CLIENT	SIZE (MGD)	STUDY	DESIGN	SELECTED OR DESIGNED	COMPLETE
Fayetteville, AR West Side WWTP	10	Design of odor control systems for new wastewater	In progress	Designing covers, ductwork and centralized	2004
McGoodwin, Williams & Yates		treatment plant		biological odor control systems for new plant.
Old Henry Pump Station & Force Main Odor Control	6.3	Design assistance and review for odor control systems	In progress	1,500 cfm carbon adsorber for wet wells, chemical	2004
Sabak, Wilson & Lingo Inc.		for new pump station and force main		injection system for force main, carbon inserts for
				air release valve manholes
Port St. Lucie, FL (Glades WWTF)	6	Odor dispersion modeling for plant in design phase	Not included	Not included	2003
Arcadis - Reese, Macon & Assoc.
Fredericksburg, VA	3.5	Odor assessment, H2S testing	Next phase	Draft report submitted	2003
Whitman, Requardt and Assoc.
Grand Chute/Menasha, WI WWTP	5	Odor testing, report testing results	Not included	CH2M Hill submitted draft report	2003
CH2M Hill
West County Wastewater District	8	Odor evaluation including odor dispersion modeling	Next phase	Draft report submitted	2003
Richmond, CA
Village of Mamaroneck, NY Waste Transfer	N/A	Odor and VOC testing, odor modeling, community	Next phase	Draft report submitted	2003
Station		odor surveys, odor control recommendations
Town of Ocean City, Maryland -	15	Treatment plant and Waste Tranfer Station odor	Next phase	Draft report submitted	2003
Whitman Requardt and Assoc.		testing, H2S testing, odor modeling and evaluation
		of alternatives
Vallejo Sanitation and Flood Control District,	15.5	Testing reduced sulfur compounds and	Not included	Evaluate carbon adsorber or biofilter for	2003
California - Carollo Engineers		VOCs in secondary process		the bioroughing tower
West County WWTP, Louisville, KY -	22	Selected custom built biofilter with	In progress	12,000 cfm biofilter with BacTee	2004
GRW Engineers (design/build)		new synthetic media		polyethylene support structure
Eastern Avenue Pump Station, Baltimore, Md	140	Odor testing, H2S testing and odor	Next phase	2- 12,000 cfm carbon	2004
Whitman Requardt and Assoc.		modeling		adsorbers for wet well and screens
Mill Creek WWTP, Cincinnati, Ohio	105	Detailed testing and evaluation of	Not included	10,500 cfm scrubber upgrade and	2002
CH2M Hill		packed bed scrubber under different		modifications to chemical feed systems
		operating conditions, measure CO2
		H2S, pH and ORP
Orlando, FL Conserv II WPCF	30	Odor control master plan	Complete	Project to cover aeration basin channels and GBT's	2004
City of Orlando, FL				and use biological treatment is under construction.
Colorado Springs Utility District, Colorado	30	Performance testing for reduced sulfur	Not included	Tested inlet and outlet of iron sponge and	2002
		compounds from odor control units		Sulfatreat dry scrubbers
Massaponax WWTP,  Fredericksburg, Virginia	15	Performance testing of carbon adsorber	Not included	Tested Phoenix carbon unit	2002
H.E. Sargent, Inc.		for H2S removal
Iron Bridge WPCF, Orlando, Florida	25	Evaluated alternatives to treat air from	In progress	Selected to modify existing humidification	2003
Boyle Engineers		new flow equalization basins		chamber and biofilter to allow increase
				in air flow. Biofilter previously
				designed by WEA
Downington Regional WPCC, Downington, PA	7.5	Odor testing to determine odor emission	Not required	Found low odor levels and no controls	2002
Downington Area Regional Authority (DARA)		rates and odor modeling and prepare a report		recommended at this time
		of findings
Morris Forman WWTP, Louisville, KY	105	Extensive testing of 2-20,000 cfm scrubbers and	Complete	Modifications to scrubber chemical feed	2003
Metropolitan Sewer District		optimization study		systems, including pumps and controls
Jeffersontown WWTP, Louisville, KY	15	Master Plan study for the plant, including	Complete	Design channel covers and selected carbon	2002
Metropolitan Sewer District		odor testing, odor modeling and public meetings		adsorption and activated sludge diffusion
West County WWTP, Louisville, KY	25	Master Plan study for the plant, including	Complete	Design covers for grit channels and aeration	2002
Metropolitan Sewer District		odor testing and odor modeling. Public meetings		basin channels, ventilation for screening
		and meetings with Air Pollution Control Board		building, and carbon adsorbers, synthetic
				media biofilter and activated sludge diffusion
Hilton Head collection system, Hilton Head, SC	5	Extensive study of collection system and	Not included	Evaluated chemical feed systems and	2002
Hilton Head #1 Public Service District		pump stations to identify highest sources		recommended Bioxide and magnesium
		of H2S due to severe corrosion problems		hydroxide addition at key pump stations
Plant No. 1, Orange County, California	80	Set up and performed demonstration project	Design of	Oxygen ionization tested at various	2003
Orange County Sanitary District		of oxygen ionization at the Grit Dumpster	demonstration	conditions including with H2S injection
		Building in turnkey project	project
Moore WWTP, Moore, Oklahoma	12	Reduced sulfur compound testing from sludge	Complete	Modified existing carbon vessels into a	2002
US Filter Operating Services		holding tank because of many odor		bioscrubber with special media for H2S and
		complaints. Evaluated alternative treatments.		RSC treatment
Columbus collection system, Columbus, Ohio	Large sewer	Identification of source of sewer odors by	Not included	Recommended biofilters to exhaust air and	2002
Division of Sewerage and Drainage	system	testing H2S and sewer pressures. Set up		keep sewers under negative pressure. Treatment
		large fans to exhaust sewer air and measure		with biofilters recommended
		pressures
Unity Facility in Helena, Arkansas	400 tons/day	Sludge from New York City hauled to this facility	Complete	Devised a complete air treatment train for	on-going
Unified Environmental Services		to produce an ammonium sulfate fertilizer.		70,000 cfm of air including venturi, acid
		Performed odor, VOC and RSC testing		scrubber and regenerative thermal oxidizer
Broken Arrow, OK	6	Odor study, community odor survey, recommended	Complete	Recommended phased approach with follow-up	2001
McGoodwin, Williams & Yates		odor control alternatives		testing to evaluate effectiveness of first phase, which
				was chemical feed in collection system.  Follow-up
				testing may be scheduled in 2004.
Half Moon Bay WWTP, California	4	Evaluation of odor sources due to complaints and	Not included	Evaluated 3 stage scrubber and other	2001
Sewer Authority Mid Coast Side		assessment of current technologies. Proactive		odor control systems and recommended
		approach for future considerations.		a course of action to address major concerns
Rte. 108 Pump Station, Howard County, MD	6	Evaluation of hydrogen sulfide generation and	In progress	Evaluated chemical treatment alternatives	2001
Whitman Requardt and Associates		emissions in historical town and pilot testing		including Bioxide, hydrogen peroxide, iron
		project with Bioxide and oxygen injection		salts and pure oxygen injection. Selected
				oxygen injection with on-site production using
				pressure swing adsorption and side stream
				injection
Conserv II WPCF, Orlando, Florida	30	Evaluation of alternatives to treat air from new	Included	Selected 2 stage bioscrubber for EQ tank	2003
Brown and Caldwell		pump station and equalization basins		and single stage bioscrubber and second
				stage biofilter for pump station wet well
Town Branch and West Hickman Creek WWTP	25 and 30	Compete studies at each plant to identify major	Complete	Designed channel covers, carbon	2001
Lexington Fayette Urban County Government		odor sources and to evaluate alternatives for		adsorbers, activated sludge diffusion and
Lexington, Kentucky		treatment		modified existing scrubbers and oxygen
				ionization system for BFP room
Consulting Services for Louisville & Jefferson	Various	Odor consultant to large sewer district	On-going work	Multiple projects completed under on-going	On-going
County Metropolitan Sewer District				consulting services agreement
Consulting Services for City of Orlando, FL	Various	Odor consultant to large sewer district	On-going work	Multiple projects completed under on-going	On-going
				consulting services agreement