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Dossier Public 1640

Open File: 1640
Previous OF publication(s):
Province / Territory: Ontario
Funding Source: Federal and Provincial
Year of Collection: 1987

Survey Type: Regional Lake Survey
# Lake sites: 1696
# Stream sites:
Survey Area: 20900 km²
NTS Sheet(s): 041P, 031M

The regional lake sediment and water survey for central Ontario (NTS 41P and part of 31M) was conducted during the summer of 1987.

This report presents analytical and statistical data for 18 variables in lake sediments from 1,696 sample sites, collected at an average density of one sample per 12.4 km². This report includes values for uranium, fluoride, pH, alkalinity, calcium and magnesium in waters.

Analytical Data

Sediments
variable	method	detection limit	year of analysis
Antimony	HY-AAS	0.2 ppm	1987
Arsenic	HY-AAS	1 ppm	1987
Cadmium	AAS	0.2 ppm	1987
Cobalt	AAS	2 ppm	1987
Copper	AAS	2 ppm	1987
Fluorine	ISE	20 ppm	1987
Gold	FA-NA	1 ppb	1987
Iron	AAS	0.02 pct	1987
Lead	AAS	2 ppm	1987
Loss-on-ignition	GRAV	1 pct	1987
Manganese	AAS	5 ppm	1987
Mercury	CV-AAS	10 ppb	1987
Molybdenum	AAS	2 ppm	1987
Nickel	AAS	2 ppm	1987
Silver	AAS	0.2 ppm	1987
Uranium	NADNC	0.5 ppm	1987
Vanadium	AAS	5 ppm	1987
Zinc	AAS	2 ppm	1987

Waters
variable	method	detection limit	year of analysis
Calcium	ICP	0.5 ppm	1987
Fluoride	ISE	20 ppb	1987
Magnesium	ICP	0.05 ppm	1987
Total Alkalinity	TIT	1 ppm	1987
Uranium	LIF	0.05 ppb	1987
pH	GCM		1987

Acknowledgements:

The reconnaissance survey was undertaken by the Geological Survey of Canada in conjunction with the Ontario Department of Mines under the Canada - Ontario Mineral Development Agreement (1985-1990).

E.H.W. Hornbrook directed the survey.

P.W.B. Friske coordinated the operational activities of contract and Geological Survey of Canada staff.

Collection:

Contractor and supervisor details for sample collection
Category	Responsible Party
Contractor:	SIAL Geophysique, Montreal, Quebec
Supervisor:	E.H.W. Hornbrook, P.W.B. Friske (GSC)

Preparation:

Contractor and supervisor details for sample preparation
Category	Responsible Party
Contractor:	Golder Associates, Ottawa, Ontario
Supervisor:	J.J. Lynch (GSC)

Analysis:

Contractor and supervisor details for sample preparation
Category	Responsible Party
Contractor:	Bondar-Clegg & Company Ltd., Ottawa, Ontario Chemex Labs Limited, Vancouver, British Columbia
Supervisor:	J.J. Lynch (GSC)

Other information:

Date de modification: 2024-09-23