Dufferin-Peel Catholic District School Board
STANDARD TEXT GUIDELINE FOR
Topographical & Geotechnical Surveys
for
ELEMENTARY AND SECONDARY SCHOOLS
Prepared by the Design Department
DATE ISSUED
MARCH 2002
REVISION NO. 1:
REVISION NO. 2:
REVISION NO. 3:
JANUARY 2003
OCTOBER 2003
FEBRUARY 2006
LATEST REVISIONS ARE IN GREEN FONT
THE INFORMATION CONTAINED IN THIS DOCUMENT IS PROPRIETARY AND REMAINS THE PROPERTY OF THE DUFFERINPEEL CATHOLIC DISTRICT SCHOOL BOARD. THIS DOCUMENT MAY NOT BE USED IN ANY WAY, OTHER THAN AS
AUTHORIZED BY THE DESIGN DEPARTMENT OF THE DUFFERIN-PEEL CATHOLIC DISTRICT SCHOOL BOARD. BY RECEIPT
OF THIS DOCUMENT, THE RECIPIENT ACKNOWLEDGES AND AGREES TO THIS CONDITION.
TOPOGRAPHICAL AND
GEOTECHNICAL SURVEYS
1
2
3
TABLE OF CONTENTS
SURVEY QUOTATIONS & CRITERIA.............................................................................................1
1.1
INSTRUCTION TO ARCHITECTS .............................................................................................................1
1.2
CONDITIONS FOR AN OCCUPIED SITE..................................................................................................1
1.3
SURVEY PROCEDURES ...........................................................................................................................1
1.4
ONTARIO LAND SURVEYOR ...................................................................................................................3
1.5
DRAWING SCALE .....................................................................................................................................3
1.6
SUBMITTALS .............................................................................................................................................3
1.7
SURVEY PRIOR TO LAYING OF SOD......................................................................................................3
GEOTECHNICAL SURVEYS...........................................................................................................4
2.1
INSTRUCTIONS TO ARCHITECTS ...........................................................................................................4
2.2
CONDITIONS FOR AN OCCUPIED SITE..................................................................................................4
2.3
CONDITIONS FOR AN OCCUPIED SITE..................................................................................................5
GEOTECHNICAL INVESTIGATION FOR CONSTRUCTION ..........................................................5
3.1
DESCRIPTION............................................................................................................................................5
3.2
SUBMITTALS .............................................................................................................................................5
3.3
SITE INVESTIGATION ...............................................................................................................................6
3.4
ADDITIONAL TEST HOLES ......................................................................................................................6
3.5
BOREHOLES .............................................................................................................................................6
3.6
GEOTECHNICAL REPORT .......................................................................................................................6
3.7
ARCHITECT’S REVIEW.............................................................................................................................8
4
TESTING FOR QUALITY OF TOPSOIL ..........................................................................................8
5
CONTAMINATED SOIL REMOVAL .................................................................................................8
6
5.2
PHASE I ENVIRONMENTAL ASSESSMENT ............................................................................................9
5.3
PHASE II ENVIRONMENTAL ASSESSMENT .........................................................................................10
5.4
PHASE II ENVIRONMENTAL ASSESSMENT REPORT.........................................................................10
5.5
ASSESSMENT OF EXISTING OIL TANK TO BE RETAINED ................................................................11
5.6
PREPARATION OF SPECIFICATIONS FOR TANK REMOVAL ............................................................11
ENVIRONMENTAL INVESTIGATION FOR PURPOSES OF SITE PURCHASE...........................12
6.1
PROCEDURE ...........................................................................................................................................12
i.)
TOPOGRAPHICAL
GUIDELINE
1
AND GEOTECHNICAL SURVEYS
SURVEY QUOTATIONS & CRITERIA
1.1
INSTRUCTION TO ARCHITECTS
1.1.1
The enclosed is not a specification. It is a Guideline of minimum requirements to
be followed by the Architect in developing a "Submission of a Quotation for a
Survey" for the Dufferin-Peel Catholic District School Board.
1.1.2
It is the Consultants' responsibility to insure that the Guidelines are appropriately
amended to suit specific site conditions.
1.1.3
See Architects’ Guidelines, Item 2.12 (latest edition) regarding payment and
submittal of invoices for both surveys and Geotechnical investigations.
1.2
1.2.1
1.3
1.3.1
CONDITIONS FOR AN OCCUPIED SITE
When the Architects are requesting a survey for an existing, occupied site, the
following mandatory clauses shall be included as part of the request:
1.2.1.1
One week prior to the commencement of a survey on an existing site,
the Surveyor shall phone the Principal of the school (Name of Principal
and School phone number) identifying the firm and informing the
Principal of the day and time the Surveyor’s crew will be on site.
1.2.1.2
If the survey is postponed for any reason, the Principal shall be
informed at least a day in advance and a new date established for the
survey.
1.2.1.3
If the Principal has any objections to any of the proposed dates, the
survey shall be rescheduled to a mutually agreed upon time with the
Principal.
1.2.1.4
When a date has been established, and prior to calling the Principal,
the Surveyor shall inform the Architect of the proposed date. The
Architect shall, in turn, inform the Design Department.
1.2.1.5
The Design Department shall contact the Principal to confirm the
established timelines and ascertain if the principal is satisfied with the
arrangements.
SURVEY PROCEDURES
The Architect shall require the Surveyor to perform the following minimum
procedures: (The Architect may add to, or modify the list, depending on site
conditions.)
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AND GEOTECHNICAL SURVEYS
1.3.1.1
Provide legal description of the parcel, giving lot and plan number and
indicating total area in hectares and acres directly on the plan.
1.3.1.2
Identify boundaries of the site.
1.3.1.3
Identify adjacent land uses and zoning.
1.3.1.4
Identify and locate easements to, or on the site, and for what purpose.
1.3.1.5
Provide names of adjacent streets.
1.3.1.6
Provide indication of true north and date of actual site survey.
1.3.1.7
Provide levels over the entire site and adjacent streets and highways
including ditches and crown of roadways.
1.3.1.8
Topography shall extend a minimum of 15 m beyond the property lines.
1.3.1.9
Topographical data shall be at 10m x 10m grid and contour lines at
0.5m intervals.
1.3.1.10 Intermediate levels shall be taken where grade lines change rapidly.
1.3.1.11 Provide all street information, including grades at curbs (top and
bottom), centre line of road, and at sidewalks.
1.3.1.12 Show adjacent bus bays, stops or shelters and mail box platforms.
1.3.1.13 Provide location and floor elevation of all residences on lots
immediately adjacent to the school site. (BRAMPTON ONLY)
1.3.1.14 Provide location, & floor elevation of all residences, and identify on plan
all private driveways to residences across the street from all sides of
school property abutting streets. (BRAMPTON ONLY)
1.3.1.15 Elevations shall be related to a permanent bench mark. Geodetic level
shall be used where possible.
1.3.1.16 Locate and identify bench mark and provide intermediate bench marks
on existing tops of hydrants.
1.3.1.17 Provide location of catch basins and manholes and elevations of tops
and inverts – both on the site, and adjacent to property lines, and
existing streets abutting the site.
1.3.1.18 Identify size of sewer lines from existing surveys wherever possible.
1.3.1.19 Locate electrical power lines, poles, light standards and location of
transformers – both pad and pole mounted.
1.3.1.20 Locate telephone and television cables, lines and poles.
1.3.1.21 Locate existing trees on site and adjacent to property lines. Trees with
butt greater than 50mm shall be indicated as to type, height, spread
and diameter of trunk & condition of tree.
1.3.1.22 Provide information regarding all existing structures on the school site,
including driveways, walks, culverts, wells, septic tanks & septic beds.
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TOPOGRAPHICAL AND
GEOTECHNICAL SURVEYS
GUIDELINE
1.3.1.23 Provide finished floor elevations of all existing structures.
1.3.1.24 Provide information regarding location materials and heights of fences.
1.3.1.25 Provide information on paved play and parking areas and locate &
indicate lined markings on site.
1.3.1.26 Identify rubble, stockpiles and other site anomalies.
1.3.1.27 Provide information on style and type of pole mounted signs.
1.3.1.28 Provide information on building or zoning line setbacks and elevations
of concrete floors of existing buildings.
1.4
1.4.1
1.5
1.5.1
1.6
1.6.1
1.6.2
1.7
ONTARIO LAND SURVEYOR
Work shall be performed by a licensed Ontario Land Surveyor.
DRAWING SCALE
Scale of survey will be (1:300) metric in CAD format Auto Cad Release (14).
SUBMITTALS
The Consultant shall submit the following copies to the Architect for distribution as
follows:
1.6.1.1
Board
2 hard copies and 1 electronic copy
1.6.1.2
Architect
1 hard copy and 1 electronic copy
Provide one disc and reproducible plot to the Architect and three hard copies,
properly executed, signed, and sealed, to the Board.
SURVEY PRIOR TO LAYING OF SOD
1.7.1
The Architect must note that a survey is required to be conducted by an OLS
prior to laying of sod, to verify design grades.
1.7.2
The Architect will carry an allowance in the contract to perform this work
END OF SURVEY QUOTATION GUIDELINE
PAGE 3 OF 14
TOPOGRAPHICAL AND
GUIDELINE
2
AND GEOTECHNICAL SURVEYS
GEOTECHNICAL SURVEYS
2.1
INSTRUCTIONS TO ARCHITECTS
2.1.1
The enclosed is not a specification. It is a Guideline of minimum requirements
to be followed by the Architect in developing a "Submission of a Quotation for
Geotechnical information" for the Dufferin-Peel Catholic District School Board.
2.1.2
It is the Architect’s responsibility to insure that the Guidelines are appropriately
amended to suit specific site conditions.
2.1.3
See Information Guide for Architects (latest edition) regarding payment and
submittal of invoices for both Surveys and Technical Investigations.
2.2
2.2.1
CONDITIONS FOR AN OCCUPIED SITE
When the Architects are requesting Geotechnical Information from Geotechnical
Consultants for an existing, occupied site, the following mandatory clauses shall
be included as part of the request:
2.2.1.1
One week prior to the commencement of Geotechnical information on
an existing site, the Consultant shall phone the Principal of the school
(Name of Principal and School phone number) identifying the firm and
informing the Principal of the day and time the Consultant’s crew will be
on site.
2.2.1.2
If the investigation is delayed for any reason, the Principal shall be
informed at least a day in advance and a new date established for the
investigation.
2.2.1.3
If the Principal has any objections to any of the proposed dates, the
investigation shall be rescheduled to a mutually agreed upon time with
the Principal.
2.2.1.4
When a date has been established, and prior to calling the Principal,
the Consultant shall inform the Architect of the proposed date. The
Architect shall, in turn, inform the Design Department.
2.2.1.5
The Design Department shall contact the Principal to confirm the
established timelines and ascertain if the principal is satisfied with the
arrangements.
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TOPOGRAPHICAL AND
GEOTECHNICAL SURVEYS
2.3
GUIDELINE
CONDITIONS FOR AN OCCUPIED SITE
2.3.1
Prior to engaging a Geotechnical Consultant, the Architect must ascertain if the
site is owned by the Board.
2.3.2
If it is, inform the Design Department of the date the investigation is to be
performed.
2.3.3
If it is not, obtain from the Planning Department (through the Design Department)
a letter of “Permission to Enter” from the developer or owner, prior to proceeding
with the actual site investigation.
3
GEOTECHNICAL INVESTIGATION FOR CONSTRUCTION
3.1
DESCRIPTION
3.1.1
The Architect will prepare a drawing indicating the existing/new building, the new
addition the proposed paved play areas & parking lots and the locations of the
proposed test holes. The drawing shall be referenced to the survey plan, if at all
possible.
3.1.2
The Architect will request that the Consultants carry out the investigation, prepare
a Geotechnical report and make separate recommendations – in a separate letter
– regarding investigation for soil contamination.
3.2
3.2.1
SUBMITTALS
The Consultant shall submit 5 “hard” copies to the Architect for distribution as
follows:
3.2.1.1
Board
2
3.2.1.2
Architect
2
3.2.1.3
Structural Engineer
1
3.2.2
The Consultant shall submit an electronic copy to the Architect.
3.2.3
The Consultant must submit final report within two (2) weeks of authorization to
proceed.
3.2.4
The original invoice, copies of reports and electronic copy shall be submitted
directly to the Architect.
3.2.5
The Consultant shall submit a copy of the Certificate of Insurance issued by the
Professional Liability Insurer of the Geotechnical Consultant. Minimum coverage
PAGE 5 OF 14
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GUIDELINE
AND GEOTECHNICAL SURVEYS
required is $500,000.00. Insurance shall provide coverage for all advice provided
including any advice provide on soil contamination.
3.3
3.3.1
3.4
3.5
SITE INVESTIGATION
Existing Services:
3.3.1.1
Determine location of any existing services and protect form damage.
3.3.1.2
Do not damage existing property, including trees.
ADDITIONAL TEST HOLES
3.4.1.1
If preliminary field results indicate that additional test hole should be
made, the Architect shall be contacted before the drilling equipment is
removed form the site.
3.4.1.2
If the initial test hole does not confirm that the site is underlain by an
adequate bearing stratum at a reasonable depth, the Architect shall be
contacted before proceeding further.
BOREHOLES
3.5.1
Extend borings to a minimum of 4 m for boreholes to bedrock unless bedrock
encountered sooner. Provide the existence of bedrock by coring.
3.5.2
Extend borings to a minimum of 2 m for the remaining boreholes or to bedrock if
encountered sooner.
3.5.3
Plug boreholes and backfill test pits. Remove surplus excavated material from
the site.
3.5.4
Record geodetic ground elevation at each test hold.
3.5.5
Excavate sufficiently to expose and determine the elevation of the existing footing
at each location. Measure the footing thickness and projection, then backfill the
excavation (see plan for locations).
3.5.6
Preserve soil and rock samples until it can be determined if further laboratory
analysis will be required.
3.6
3.6.1
GEOTECHNICAL REPORT
Prepare a Geotechnical report. Include recommendation and test result for the
following:
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GEOTECHNICAL SURVEYS
3.6.2
GUIDELINE
3.6.1.1
Recommend appropriate types of foundations.
3.6.1.2
The safe bearing capacity of the sub-strata at stated elevations and the
anticipated uniform and differential settlements. Advise if weight of
footing and soil above footing should be included when calculating
footing bearing pressure in order to check against allowable bearing
pressure.
3.6.1.3
Probable depth of rock surface to be removed to establish sound
bearing, foundations bear on rock.
3.6.1.4
Advise on minimum depths at which foundations shall be founded.
Minimum depth of soil required above bearing elevations, if this is a
design requirement for bearing capacity. Advise on type and depth of
frost protection for foundations.
3.6.1.5
If deep foundations are to be considered: the types and safe vertical
and lateral load capacities for piles and/or caissons; and assessment of
obstructions likely to be encountered during the installation of piles
and/or caissons; and inspection and testing requirement during the
installation.
3.6.1.6
Provide foundation factor for determination of earthquake forces.
Also provide the following:
3.6.2.1
Unit density of soil and coefficients of active and passive earth
pressures for design of member resisting lateral loads. Coefficient of
friction for footing on soil.
3.6.2.2
Elevation of the water table.
3.6.2.3
If addition, elevation of the underside of footing of adjacent existing
structure at points noted on the Drawings.
3.6.2.4
Permanent perimeter and under-floor drainage requirement, including
estimate of the amount of ground water to be pumped.
3.6.2.5
The stability of existing slopes on site and adjacent to site.
3.6.2.6
Suitability of the soil on site to support slabs-on-grade and paved areas.
Coefficient of sub-grade reaction for design of slabs-on-grade and
concrete pavements.
3.6.2.7
Suitability of the soil on site for use as compacted fill under slabs-on
grade and paved areas, and method of compaction.
3.6.2.8
Suitability of the soil on site for use a backfill to exterior walls, and
method of compaction.
3.6.2.9
Backfilling requirements including types of imported fill and levels of
compaction.
3.6.2.10 pH and sulphate content of the ground water and the chloride content
of the soil.
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AND GEOTECHNICAL SURVEYS
3.6.2.11 Recommendation for temporary shoring of excavation, including design
requirements for both raker and tie-back systems.
3.6.2.12 Recommendation on asphalt pavement designs.
3.6.2.13 Recommendation on methods of de-watering during construction if a
high water table is encountered.
3.6.2.14 Identification of any unusual problems likely to arise during excavation
or during construction of foundations.
3.6.2.15 Prepare sketches of existing foundations showing footing elevation,
thickness and projection at each location.
ARCHITECT’S REVIEW
3.7
3.7.1
At a later date, the Geotechnical Consultant will be provided with a copy of the
foundation drawings and specifications.
3.7.2
Review of the information provided in order to confirm that the recommendations
of the Geotechnical report have been correctly interpreted.
3.7.3
Submit written comments to the Architect for the Structural Engineers within two
(2) weeks of receipt of information.
4
TESTING FOR QUALITY OF TOPSOIL
4.1.1
5
When bore holes are taken, the quality of top soil from all the field bore hole
locations must be tested by an independent testing laboratory, and three copies of
the reports are to be submitted to the Architect. Based on the reports the
Architect/Landscape Architect will determine required enhancement of the top soil
to meet minimum Board top soil standards.
CONTAMINATED SOIL REMOVAL
5.1.1
The Board is obliged to fill out an Environmental Site Screening Questionnaire
and Declaration for most of its sites – both new and additions – in which the
following questions must be addressed:
5.1.1.1
Does the application propose development on septic systems or
redevelopment on a site where septic systems were used?
5.1.1.2
Has land filling occurred ion the site?
5.1.1.3
Is there a reason to believe that the lands may be potentially
contaminated based on historical land use?
5.1.1.4
Is the nearest boundary line of the application within 500 m of an
operational/non-operational landfill or dump?
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GEOTECHNICAL SURVEYS
GUIDELINE
5.1.1.5
Have previous agricultural operations ever included sewage sludge
application on the lands?
5.1.1.6
Are there any underground storage tanks or other buried waste on the
property?
5.1.1.7
For existing or previous buildings on the site, are there building
materials remaining which are potentially hazardous to health (e.g.
Asbestos, PCB’s)?
5.1.2
If any of the above questions are answered in the affirmative, or answered as
“uncertain” the Authorities Having Jurisdiction will require a Phase 1
Environmental Site Assessment to be prepared – providing that such an
assessment had not been done within the last five years.
5.1.3
To permit the Board to decide upon undertaking Phase 1 Environmental
Assessment, make a separate and detailed recommendations to the Architect,
quoting additional costs per task, for any additional investigation which should
be undertaken with respect to the following:
5.2
5.1.3.1
Site history
5.1.3.2
An electromagnetic survey to determine location of underground
storage tanks.
5.1.3.3
Analysis of the soil for noxious or explosive gasses.
5.1.3.4
Analysis of the soil for toxic substances.
5.1.3.5
The degree of contamination, if any, of existing soil which might be
excavated and its possible effect on the cost of removal and disposal
on site or off – site.
PHASE I ENVIRONMENTAL ASSESSMENT
Separate Price # 1
5.2.1
If requested to perform a Phase 1 Environmental Site Assessment (ESA) for the
site, the Consultant shall prepare a Phase 1 Environmental Assessment Report
that follows CSA standards Z768-94 (latest addition).
5.2.2
This report must address the questions posed by the Municipality.
5.2.3
This report must include a clause which allows the Authorities Having Jurisdiction
to make reliance on the finding and conclusions presented in the report, and must
be sealed, signed, dated by a Professional Engineer.
5.2.4
The report must include a clear statement by the Engineer regarding the suitability
of the site, including and lands to be conveyed to the Region of Peel and the
Credit Valley Conservation Authorities, for the intended land use.
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GUIDELINE
5.2.5
5.3
AND GEOTECHNICAL SURVEYS
If the Board believes that there is an existing buried underground oil storage
tank(s) on the site, these are to be confirmed and located as part of the phase 1
Report.
PHASE II ENVIRONMENTAL ASSESSMENT
Geophysical survey portion only – Separate Price # 2
5.3.1
5.4
As part of the Phase II environmental assessment a Geophysical Investigation
must be conducted in advance of the remediation work to determine the presence
of any existing Underground Storage Tanks (UST).
PHASE II ENVIRONMENTAL ASSESSMENT REPORT
Separate Price # 3
5.4.1
Once the Geophysical Survey is completed and the location(s) of UST’s are
determined, perform (4) four boreholes per tank centered on each side of the
tank approximately 1m from each side.
5.4.2
This Phase II should address, but not necessarily be limited to, the following:
5.4.2.1
Confirmation that soils, including fill, and ground water on site are in
conformance with the appropriate MOE criteria and,
5.4.2.2
Any existing UST’s in use comply with current Guidelines an
Regulations. (See item 3.5 below).
5.4.3
The Phase II ESA must be sealed and signed by the professional Engineer and
include a clear statement by the consultant regarding the suitability of the site,
including any lands to be conveyed to the Municipality, the Region of Peel and
Credit Valley Conservation, for the intended land use. The report must include a
clause which allow the Municipality to make reliance on its findings.
5.4.4
Should the consultant identify that remediation is required to meet the appropriate
MOE criteria, prior to any approval; any and all contaminated areas of the site
identify in the report must be reedited in conformance with MOE Guidelines.
5.4.5
Upon completion of the remediation, the proponent will submit a complete Record
of Site Condition (RSC; latest revision). The RSC shall include and Affidavit of
Compliance from the consultant and a statement from the property owner an
include acknowledgment of receipt of the RSC by the MOE.
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5.5
GUIDELINE
ASSESSMENT OF EXISTING OIL TANK TO BE RETAINED
Separate Price # 4
5.5.1
Additions, particularly in secondary schools, may have buried waste oil storage
tanks that are part of the auto shop program and that are to be retained.
5.5.2
The Municipality may require a certification from the Environmental Consultant
that the existing tank is not leaking.
5.5.3
The Environmental Consultants must take measurements, including, but not
necessarily limited to, pressurizing the tank to ascertain pressure worthiness.
5.5.4
If the tank is leaking, then the Consultant shall prepare procedures to remove it,
as outlined below. If the tank meets pressure worthiness, the Consultant shall
prepare a report to that effect.
5.5.5
This report must include a clause which allows the Authorities Having Jurisdiction
to make reliance on the finding and conclusions presented in the report, and must
be sealed, signed, dated by a Professional Engineer.
5.6
PREPARATION OF SPECIFICATIONS FOR TANK REMOVAL
The Consultant shall prepare specifications to remove the tank(s) and any surrounding
contaminated soils. The specification will be in three parts:
5.6.1
Part 1- Removal of Tank – Separate Price
5.6.1.1
The contractor shall provide all required labour, machinery and
materials to remove (one or more) existing underground fuel oil storage
tank(s) (UST) from the site (approximate tank volume is XXXX imperial
gallons) containing (fill material or approximately XXXX litres of fuel).
5.6.1.2
Work to be included, but not necessarily limited to, the following:
5.6.1.2.1
The careful excavation and exposure of the existing buried tank.
5.6.1.2.2
Disconnection and removal of all piping from source to the tank.
5.6.1.2.3
Removal of the tank and contents from site.
5.6.1.2.4
Disposal of tank and contents in an approved manner, at an approved location
(contaminated materials).
5.6.1.2.5
Backfilling the resulting hole with imported “Granular B” material, fully
compacted to 100% SPMDD in 300 mm lifts to original grade level.
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GUIDELINE
5.6.2
AND GEOTECHNICAL SURVEYS
Part 2 – Removal of Contaminated Soils – Separate Price
5.6.2.1
The contractor shall provide all required labour, machinery and
materials to excavate, remove and dispose of existing petroleum
contaminated soils around the tank as necessary, and as directed by
the Consultant.
5.6.2.2
Work to be included, will be as follows:
5.6.2.2.1
The careful excavation of (presumed) contaminated soil to an overall “hole
volume” of 27 cubic metres (3 m wide x 3 m long x 3 m deep).
5.6.2.2.2
The removal of excavated soil from site and disposal of same in an approved
manner, at an approved location (contaminated materials).
5.6.2.2.3
Backfilling the resulting hole with imported “Granular B” material, fully
compacted to 100% SPMDD in 300 mm lifts to original grade level.
5.6.3
Part 3 – Removal of Contaminated Soils beyond Part 2
5.6.3.1
6
Cost of excavation and removal from site to an approved location of
contaminated material beyond the “Removal of Contaminated Soils of
Part 2” shall be identified in the Unit prices of the Supplementary Form
of Tender. (Architect to include in the Unit Prices Section, identifying
the appropriate landfill site.)
ENVIRONMENTAL INVESTIGATION FOR PURPOSES OF SITE PURCHASE
Environmental site investigations are performed to check for contaminants as a standard
procedure prior to the approval of any new sites.
6.1
PROCEDURE
6.1.1
Depending on past land use, one of four levels of environmental testing may be
established.
6.1.2
The history of land use for a site may be established from information gathered in
a number of ways, including the search of title of the property, investigation of the
activities of previous owners, and data available from the Ministry of Environment
and other Government Ministries and Agencies.
6.1.3
The Ministry of Environment maintains a registry of dumpsites, which may be
useful in identifying some areas of concern. If past land use cannot be reliably
established, the most comprehensive level of testing would be carried out. While
this procedure does not address every conceivable condition, it does provide a
normal element of safety for the students and staff of new schools.
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GUIDELINE
6.1.4
Based on this site history investigated by the Consultant, one of four levels of
environmental analysis would be undertaken. The environmental analysis would
proceed as follows:
6.1.5
Level 1 Analysis
6.1.5.2.1
6.1.6
6.1.6.2.1
6.1.7
6.1.8
6.1.5.1
Level 1 testing would be on farm land which is not in close proximity to
any manufacturing plants or other industries which may have caused
leaching, and which, by title search, has shown to be always used as
farmland. (The majority of the sites to be purchased by the Board are
in this category.)
6.1.5.2
Level 1 of soil would consist of testing two samples by means of hand
auguring and testing for the following;
Whole sample analysis of soils to test for toxic levels of; the metals arsenic,
cadmium, chromium, cobalt, copper, iron, lead, mercury, molybdenum, nickel,
selenium, zinc, antimony, vanadium; chlorinated pesticides and PCB’s; and
organic content analysis.
Level 2 Analysis
6.1.6.1
Level 2 testing would be on farm land which, by title search, was shown
to be always used as farm land, but is, or has been, in close proximity
to a manufacturing plant or other industry, that may have caused
spread of contaminates.
6.1.6.2
Level 2 testing would consist of testing two representative soil samples
for the following:
As under Level 1 and in addition potential other chemicals as might be used by
the industry, that is, or was, in close proximity to the site.
Level 3 Analysis
6.1.7.1
Level 3 testing would be on property occupied by a manufacturing plant
or other such industrial complex, but where the site history indicated
that it was not used in the manufacture, or disposal of, chemicals or
other possible toxic materials.
6.1.7.2
Level 3 would consist of testing at least two soil samples as shown for
Level 2 testing and allow for discretionary tests depending on type of
plant. In case of contaminants, an Ontario Regulation 309 Leach would
be used to assess if the soil was hazardous waste.
Level 4 Analysis
6.1.8.1
Level 4 testing would be on a property previously or presently occupied
by a manufacturing plant whose manufacture was of a chemical or toxic
nature, or the site was know to be used for storage of chemicals or
there is a possibility that toxic products were dumped or disposed of on
the site.
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TOPOGRAPHICAL AND
GUIDELINE
6.1.8.2
6.1.9
AND GEOTECHNICAL SURVEYS
Level 4 testing would consist of testing five soil samples for the
parameters Level 3.
Greater allowance for discretionary test,
depending on type of plant is likely needed. Ontario Regulation 309
leaching test would be competed on at two samples to verify they were
not hazardous wastes.
Testing report results will be submitted to the Board’s Design Department staff.
END OF GEOTECHNICAL SURVEY GUIDELINE
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