Basic Plan Reading and Plan Review Flashcards
What are contour lines?
Lines on a map connecting points on a land surface that are the same elevation above sea level.
(Module 7 / Page 3)
If contour lines are close together, what might you conclude about that section of a site?
That section of the site is a steep slope
Module 7 / Page 3
When looking at a plan, in what direction does water drain in relation to contour lines?
Water always flows perpendicular to the contour lines
Module 7 / Page 4
Erosion and Sediment plans should have two separate parts. What are they?
Narrative and Illustrative
Module 7 / Page 2
When reading a set of plans, how can you determine if there is a valley on your site?
A valley is represented by contours that point towards the high number.
(Module 7 / Page 5)
When reading a set of plans, how can you determine if there is a summit on your site?
There should be spot elevation
Module 7 / Page 6
What might a low area without a clear drainage way on a plan indicate?
A low area may indicate drainage through an underground system
(Module 7 / Page 6)
What is another term for a cavernous area with disappearing streams and springs?
Karst System
Module 7 / Page 7
What does cut and fill refer to?
The excavation in one area and the depositing of material nearby
(Module 7 / Page 3)
If a plan shows a slope is a 4:1 ratio, what would be the percentage of the slope?
25%. 1/4 * 100 = 25
Module 7 / Page 9
What would be steeper, a 5 to 1 slope, or a 2:1 slope?
A 2:1 slope would be much steeper
Module 7 / Page 9
If a slope continued for 75 feet and the elevations at the top and bottom respectively are 520.50 and 510.00, what is the slope percentage?
Bonus point: is this slope a critical erosion hazard?
14%
(520.50 - 510.0)/75 * 100 = 14%
This slope would not be considered a critical erosion hazard since it is less than 15%.
(Module 7 / Page 4) and (Module 2 / Page 19)
If a slope is shown on the plans with contour lines getting closer together near the lower elevations, would it be considered concave or convex?
Bonus: is there a high potential for erosion?
Convex. Convex is steeper at the bottom than the top.
Yes. There is a high erosion potential
(Module 7 / Page 8)
True or false: the Erosion and Sediment details can be shown on the main plan of the construction drawings.
False. The E and S plans should be “an independent document” with the ability to “stand-alone”. Other irrelevant details may clutter the E and S plan.
(Module 7 / Pages 10-11)
Why is a narrative an important part of an Erosion and Sediment Control plan?
Because it can contain information not apparent on a site plan.
(Module 7 / Page 11)
Which of the following does not need to be part of the ESC Plan narrative?
A) existing soil characteristics B) Proposed location of control measures C) proposed maintenance plans D) project description E) Chesapeake Bay Protection Area requirements
B) the proposed location of control measure might be better represented in the site plan
All the other would be very helpful in the narrative
(Module 7 / Page 11)
Who is responsible for preparing a plan?
The owner or lessee
Module 7 / Page 10
Describe some things that might make a plan more complicated.
- larger land disturbance
- steeper slopes
- close proximity to water or sensitive habitats
- close proximity to dense populations
- close proximity to high value properties
(Module 7 / Page 14)
During the review of an ESC plan, how long does a locality have to notify the plan submitter the plan will not be approved?
45 days. There are 45 days to check the completeness of an ESC plan.
(Module 7 / Page 15)
What action should a plan reviewer take if the plans are unclear?
The plan reviewer should reject the plans and ask the submitter to make revisions.
(Module 7 / Page 15)
What length of time does a reviewer have to consider a variance request? What occurs if the plan reviewer exceeds that time period?
10 days. At the end of 10 days the variance is automatically denied.
(Module 7 / Page 16)
What is an unacceptable reason for a variance request?
Variances will not be approved for Economic Reasons. Example: “It’s too expensive”
(Module 7 / Page 16)
How must variance request be submitted to a plan reviewer?
In writing
Module 7 / Page 16
In what situation would an engineer submit a variance request?
If a site has a situation where a minimum standard cannot be complied with or cannot be installed the way it is shown in the plans
(Module 7 / Page 16)
Does an Erosion and Sediment Control plan need to reference every Minimum Standard?
No.
The plan needs to address all APPLICABLE Minimum Standards.
(Module 7 / Page 17)
What might a section called “Off-Site Areas” in the narrative be referring to?
Borrow sites or stockpiles
Any land disturbing activities occurring off site
(Module 7 / Page 17)
Which of the following should be included in the plan portion of an Erosion and Sediment Control plan:
- Final contours
- Existing Vegetation
- Critical erosion areas
- Soils
- Vicinity map
All of them. They all should be shown on the ESC plan.
Module 7 / Page 18-19
What is the review time for subsequent submittals?
45 days
Module 7 / Page 19
What should be included under the Maintenance portion of the narrative?
The plans for regular inspections and repair of ESC structures.
(Module 7 / Page 18)
What happens if an ESC plan has been submitted and the VESCP authority has not taken any action within the time specified?
The plan shall be deemed approved
62.1-44.15:55 B
