Glidden Coatings & Resins

GLIDDEN COATINGS & RESINS

DIVISION OF SCM CORPORATION
300 SPROWL ROAD HURON, OHIO 44839

December 5, 1996

Ecological Chemical Company,Inc.
123 Henry Street
Freeport, New York 11520

Attention: Robert Berger

Dear Bob:

I am pleased to assist your overseas marketing effort with this letter of recommendation.

Last spring we used AquaClean for the first time. Our application was one of odor control in a 2,000,000 gallon lagoon containing paint wastewater. As you know, our first dosage was not strong enough to overcome the problem. However, with your continued support, we determined the proper amount of AquaClean. The septic odor was eliminated within one-day time and we kept it under control all summer with the recommended maintenance dosage.

Best wishes for the coming New Year.

Yours truly,

C. Hoffer
Environmental Coordinator
The Glidden Company

T.P. ASSOCIATES INTERNATIONAL, INC.

17875 Cherokee P.O. Box 96

Harpster, Ohio 43323
FAX # 614-496-4121
614-496-4571

Mr. Charlie Hoffer

January 22, 1996

Glidden Coats & Resins
350 Sprowl Road
Huron, Ohio 44839

Dear Mr. Hoffer:

Below are the results of analyses performed on the sample received by us on January 10, 1996. This sample was taken from your lagoon and consisted of both bottom sediment and lagoon wastewater. The sample was analyzed in order to assure ourselves that appropriate concentrations of nutrients were present for the growth of large numbers of micro-organisms and to be certain that inhibitory quantities of toxic materials were not present. Following are the results of the analysis:

Laboratory No.	M286-2-1

pH	7.16 S.U.	Sulfide (H₂S)	1.00 mg/l
TNFLT (SS)	39940.00 mg/l	Cd	38.00 mg/l
Ammonia as N	53.21 mg/l	Total Chromium	284.00 mg/l
T. Phosphourus	3.27 mg/l	Lead	78.00 mg/l
COD	18380.00 mg/l	Nickel	96.00 ug/l
Chlorides	58.80 mg/l	Zinc	1450.00 ug/l

Following this initial analysis, an aliquot of the sample was inoculated with AquaClean at concentrations of 5 and 10 milligrams per liter (PPM). The samples were than placed into the bio-oxidation system together with an untreated portion of the sample, which serves as a control. Following is a summary of the results of that monitoring:

(All Data is Reported in mg/l)

	Treated			Treated			Untreated
	@ 5 PPM			@ 10 PPM
	COD	TSS	H₂S	COD	TSS	H₂S	COD	TSS	H₂S
01-10-96	18380	39940	116.0	18380	39940	116.0	18380	39940	116.0
01-14-96	2680	18423	----	3010	11150	----	17440	34820	132.0
01-20-96	1938	14050	1.21	1011	7000	0.79	16978	28690	151.0
% Reduc.	89.5%	64.8%	9%	94.5%	82.5%	99.3%	7.6%	28.2%	-30%

T.P. ASSOCIATES INTERNATIONAL, INC.

17875 Cherokee P.O. Box 96

Harpster, Ohio 43323
FAX # 614-496-4121
614-496-4571

As you can see, the addition of the bio-augmentation material AquaClean has resulted in marked improvement in COD, TSS, and H₂S concentrations. The reduction in COD was 94% for the 10 PPM treatment, while the TSS showed 82.5% reduction. The Hydrogen Sulfide levels were reduced by 99%, which would indicate that the spring turn over odors would be minimal if the use of AquaClean were employed. The freon extractable materials (Grease and Oil) were reduced from 1600 mg/l to 340 mg/l over the eleven day test.

The reduction of solids in the lagoon have been demonstrated in the Laboratory bench test to such a degree that similar reductions should be attainable within 8 months in the actual lagoon.
We recommend the use of AquaClean in the lagoon in a two stage seeding application as follows:

As soon as possible add 10 PPM of AquaClean (20 gallons), follow this with a maintenance dose of 2 gallons per month until June. Then add 3 PPM and continue with the maintenance application of 2 gallons per month. The bottom solids will begin to show reduction within about 3 to 4 weeks.

If we can be of any further service to you please feel free to call at any time.

Sincerely,

William F. Pieiffer, Ph.D
Director of operations

David L. Mentzer
Assist. Director