Phase 2 Flashcards
What is “Characterization of site” and what is its purpose
Reconnaissance/ or exploratory [TAKING SAMPLES]
used to confirm presence of suspected contamination
Characterization of site includes
– Physical- soil, bedrock, topography, vegetation, direction of ground and surface water flow
– To help identify potential pathways/receptors and their linkages
– Will determine type of contaminant, location, concentration and general sense of migration
Which teirs have more pathways?
2 and 3
what are Sites that could possibly initiate a Phase 2 (8)
- Properties that stored PHC (especially underground)
- Property that currently stores PHC
- Former or current gas stations
- Former dry cleaning operations
- Former/current sandblasting operations [HEAVEY METALS]
- Any industrial facilities
- Any waste storage facilities
- Large scaled chemical storage unless they have appropriate paper work.
What are the components of a Phase 2 ESA (7)
- Define site
- Review existing data [PHASE 1 DATA, previous ESA]
- Define objectives
- Develop conceptual model
– Site plan, cross sections - Collect data from site
- Analyze/compile data
- Report and invoice client
what is included in Phase 2 ESA Preliminary Work
** startt considering safety factors
- Identify potential contaminate types
- Identify/quantify potential contaminated sources
- Identify & quantify physical /chemical hazards associated with the site.
- Record the above in a detailed site plan
- Plan your sampling strategy according to this information
Why are Site Plans IMP!
Need scale, elevations, orientation(North)
Border of property (very important)
Title block, legend, date, revision number
Groundwater flow direction (maybe determined from phase 2)
Features, permanent structures, services, possible contaminants highlighted (— if not confirmed)
CAD person maybe on staff [computer aided person]
what can you get from a site plan? (6)
Soil/bedrock/fill zones identified
Present/former roads
Hydrogeology- wells, water levels, services
Adjacent sites
Information from past studies
Past features, buildings, underground services, culverts on streams, etc.
what is the purpose of a Construct Work Plan
Highlight (in general) the things that would need to be covered every
time.
What may be included in a Construct Work Plan
– Contaminant types/characteristics
– Use preliminary data to ID where sources maybe
– Combine preliminary data with contaminant info to determine
where/what/how to sample.
What would occur in the water when looking at longer and shorter carbon chains?
short float (C6-C12)
long sink (C12-C18)
The lighter carbon chains are __________________
more mobile
harder to clean up
more costly to clean up
What is #2 Fuel ***
Diesel
What are common contaminants
- Hydrocarbons (TPH)
- BTEX
What does BTEX stand for
(B) Benzene
(T) Toluene
(E) Ethyl benzene
(X) Xylene
BTEX is ____________liquid
clear colorless
What are sources of TPH/BTEX? *** (5)
-Wherever oil or gas is present
-Dry cleaners
-Paints or printing production
-Paint thinners
-Waste disposal site
What is #6 ?***
Lube oil
If a site is signed off that falls under more stringent criteria –
liabilty becomes an issue
T/F
T
PCB’s are _____
non-migratory
Long chained organic compounds with high toxicity.
Hydrophobic-Rare in groundwater.
Adheres to sediment. Non migratory
Bioaccumulates, breakdown resistant.
Sources of PCBs include
Transformers,
ballasts and
hydraulic equipment.
Common examples of light metals include
Aluminum
Copper
Selenium
Common examples of heavey metals include
lead
cadmium
nickle
mercury
zinc
manganese
If the liquid is more acidic (lower pH) what does that mean for metals?
the more acidic - the more metals that will dissolve
those that don’t dissolve are easier to deal with
