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1
Q

Site Check Definition

A

Suspected Release - confirms or denies suspected release

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2
Q

Site Check Conditions

A
  1. Discovery of Regulated Substance
  2. UST Release method detects release
  3. Receive Direction from Ecology
  4. Offsite contamination and UST is suspected source
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3
Q

Site Assessment Definition

A

Not a suspected release - investigates whether release has occurred

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4
Q

Site Assessment Conditions

A
  1. Suspension of financial responsibility
  2. Stored substance goes from regulated to unregulated
  3. permanent closure after removal if abandoned before dec 22, 1988
  4. Permanent in place closure
  5. Extend temporary closure beyond 12 months
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5
Q

What must site assessment report include for soil characterization

A

description of soil gradient
soil classification
till material

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6
Q

Hand Augur/Soil Corer

A

Remove top 6 inches of soil
use if large rocks cemented soil and deep sample point not issue

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7
Q

Split Spoon

A

Requires a drill
cant sample in rocky conditions

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8
Q

Shelby Tube

A

Requires a drill
Collects undisturbed sample

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9
Q

Backhoe

A

Used for rocky surfaces and large quantities of debris
collect at sidewall and bottom

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10
Q

Hand Tool

A

Collect at center of bucket at least 6 inches deep
use for stock piled soil

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11
Q

Where is contamination most likely present

A

lowest point of interface between backflow material and native soil

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12
Q

Where do you collect if water is encountered

A

at the top of the water table

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13
Q

Conditions for ground water sampling

A
  1. lowest point of ust is in ground water
  2. field screening indicates release and lowest point is within 2 ft of season high water table
  3. existing wells can be collected fro
  4. observation wells indicate presence of substances
  5. physical conditions prevent soil sampling
  6. site check results indicate groundwater testing is needed
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14
Q

How many groundwater samples do you take with unknown gradient

A

4

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15
Q

how many water samples do you take when gradient is known and where

A

3 - one up and two down

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16
Q

Common contaminent phases

A
  1. vapors
  2. dissolved in groundwater
  3. absorbed to soil
  4. in soil pore space
  5. floating on groundwater
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17
Q

What is required in field sampling for QA/QC

A

one duplicate per matrix

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18
Q

What is required to ecology and when is it required if no contamination is found during site assessment

A
  1. Sight Assessment Checklist
  2. permanent closure checklist

within 30 days

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19
Q

What is required to ecology and when is it required if contamination is found during site assessment

A

SA Checklist and permanent closure checklist to ecology within 30 days.

Must give 24 hour notice to ecology of release

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20
Q

Sample Number in place tank less than 9000 cubic yards

A

3

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21
Q

Sample number in place tank greater than 9000 cubic yards

A

4

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22
Q

sample number excavated tank less than 9000 cubic yard

A

3

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23
Q

sample number excavated tank greater than 9000 cubic yards

A

5

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24
Q

Sample number multiple tanks in place less than 9000

A

4 for first tank 2 for each additional tank

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25
Sample number multiple tanks excavated
5 for first 2 for each additional tank
26
sample number piping
1 every 50 feet
27
excavated soil 0-25 cy
1
28
excavated soil 26-50
2
29
excavated soil 51-100
3
30
excavated soil 101-500
5
31
excavated soil 501-1000
7
32
excavated soil 1001-2000
10
33
excavated soil 2000+
10 + 1 for every additional 500 cy
34
Where do you take samples for excavated tanks greater than 9000 cy
one at entry into the sidewall, one at the bottom, three evenly distributed to other sidewalls
35
GW
well graded gravel
36
GP
Poorly graded gravel
37
GM
Silt Gravel mixture
38
GC
Clay gravel mixture
39
SW
Well graded sand
40
SP
poorly graded sand
41
SM
sand silt mixture
42
SC
sand clay mixture
43
ML
Silt loam mixture
44
CL
Clay loam mixture
45
OL
organic loam
46
MH
elastic silts
47
CH
inorganic clay of high plasticity
48
OH
Organic clay of high plasticity
49
PT
peat
50
Benzene soil MTCA limit
0.03
51
ethlybenzene soil mtca limit
6
52
edb soil mtca limit
6
53
napthalene soil mtca limit
5
54
pcb soil mtca limit
1
55
toluene soil mtca limit
7
56
TPH as GRO no benzene soil mtca limit
100
57
TPH as GRO benzene detected soils mtca limit
30
58
TPH as DRO soils mtca limit
2000
59
TPH as Heavy oils soils mtca limit
2000
60
TPH as heavy minerals soils mtca limit
4000
61
Xylenes soils mtca limit
9
62
benzene gw mtca limit
5
63
ethylbenzene gw mtca limit
700
64
edb gw mtca limit
0.01
65
pcb gw mtca limit
0.1
66
toluene gw mtca limit
1000
67
tph as gro no benzene gw mtca limit
1000
68
tph as gro benzene detected gw mtca limit
800
69
Tph as dro gw mtca limit
500
70
tph as heavy oils gw mtca limit
500
71
tph as mineral oils gw mtca limit
500
72
xylenes gw mtca limit
1000
73
mtca soil lead cleanup limit
250
74
mtca gw lead cleanup limit
15

UST (1 decks)

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