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Virginia Stormwater Management > SWM Program Administrator > Flashcards

SWM Program Administrator Flashcards

1
Q

What is a “Stormwater Pollution Prevention Plan”?

A

A document that is prepared in accordance with good engineering practices and that identifies potential sources of pollutants that may reasonably be expected to affect the quality of stormwater implementation of control measures. It should include or reference and approved erosion and sediment control plan, and approved stormwater management plan, and a pollution prevention plan.

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2
Q

Peak Flow Rate

A

maximum instantaneous flow from a prescribed design storm at a particular location

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3
Q

Runoff Volume

A

Volume of water that runs off the land development project from a prescribed storm event

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4
Q

List the types of activities that are exempt from permit application and plan approval

A

Clearing of land specifically for agricultural purposes, single-family residences separately built and disturbing less than one acres and not part of a common plan of development or sale, Land-disturbing activities that disturb less than one acre of land area except Chesapeake Bay Preservation Act area, or activities that are part of a larger common plan of development or sale that is one acre or greater of disturbance, discharges to sanitary sewer or combined sewer, activities under a State or federal reclamation program, land-disturbing activities in response to a public emergency,

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5
Q

If nutrient credits are used where must they be generated?

A

Within the same or adjacent eight-digit hydrologic unit code (watershed). If this is not possible nutrient credits can only be used if they are in the same tributary.

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6
Q

What is a “common plan of development or sale”?

A

A contiguous area where separate and distinct construction activities may be taking place at different times on different schedules.

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7
Q

What is the average annual rainfall across Virginia?

A

42-48”

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8
Q

What characteristics influence stromwater runoff quality and quantity?

A

Any implemented stormwater control measures, land use, precipitation, Natural/built drainage system, Drainage area characteristics (storm/inter-storm)

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9
Q

The frequency of extreme precipitation events in Virginia since 1948 has increased by what percent?

A

25 percent

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10
Q

In Virginia, a 2-year storm produces how much rain?

A

2.5 to 5.2 inches in a 24-hour period.

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11
Q

In Virginia, a 1-year storm produces how much rain?

A

1.9 to 3.2 inches in a 24-hour period.

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12
Q

In Virginia, a 10-year storm produces how much rain?

A

3.5 to 8 inches in a 24-hour period.

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13
Q

In Virginia, a 100-year storm produces how much rain?

A

8-9 inches in a 24-hour period.

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14
Q

Traditionally, Virginia has used what design storm for discharges into a natural channel or stream?

A

2-year / 24 hour

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15
Q

True or False? When stormwater runoff is allowed to drain away instead of being used to recharge the groundwater it alters the hydrologic balance of a watershed?

A

True

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16
Q

Ecological stress becomes apparent when impervious cover in a watershed reaches between:

A

10-25%

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17
Q

Increased peak discharges for a developed watershed can be how many times higher than an undisturbed watershed?

A

2-5 times higher.

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18
Q

First flush makes up what percentage of the annual pollution load?

A

20%

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19
Q

Which of the following represent human influences on the natural water cycle (all that apply):
A. Groundwater withdrawl
B. Rainfall capture in cisterns for dry period usage
C. Diverting stormwater runoff form steep slopes.
D. Evaporation of water from ocean surfaces to the atmosphere.
E. None of the above.

A

A., B., & C.

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20
Q

Rainwater harvesting presents an option that could alleviate pressures on water supplies in Virginia. What are some of these pressures?

A

Water treatment plant capacity, groundwater sources becoming increasingly depleted, decreased stream base flow.

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21
Q

How does increasing surface runoff change groundwater recharge rates?

A

Increases in surface runoff decrease groundwater recharge.

22
Q

Are state and federal agencies or local governments able to impose more stringent technical criteria or other requirements than included in the Regulation?

A

Yes, as stated in 4VAC50-60-47

23
Q

A two-acre LDA recieved a Construction GP on March 14, 2013. What technical criteria or other criteria must be met and for how long?
What are the exceptions to this question?

A
  • The project’s site design must meet the Part II technical criteria for two additional five-year permit cycles.
  • If state permit coverage has not been maintained, the portions of the project not under construction shall become subject to any new technical criteria adopted since original state permit coverage was issued.
  • Government projects where bonding or public debt financing has been issued for a project prior to July 1, 2012. Those projects are subject to the technical criteria of Part II C and have no specified time for completion.
24
Q

What date must grandfathered projects be completed by?

A

Grandfathered projects must be completed by June 30, 2019 unless they are government projects where bonding or public debt financing has been issued prior to July 1, 2012.

25
Q

If a portion of the grandfathered project is not complete by the above date, what happens?

A

Portions for the project not under construction shall become subject to the technical criteria of Part II B.

26
Q

Absent an imminent threat, documentation of a problem is done throughout an onsite inspection on enforcement consists of the following steps?

A

Report, notice, stop order.

27
Q

The Department may invoke civil penalties not to exceed:

A

$32,500 per violation.

28
Q

True or false. Professional engineers licensed in VA do not need to complete a Board administered training program to qualify for the initial certificate of competency?

A

False.

29
Q

What are the four components of a SWPPP?

A
  • Approved erosion and sediment control plan
  • Approved stormwater management plan.
  • Pollution prevention plan.
  • A plan specifying any additional control measures to meet the requirements of a TMDL.
30
Q

Who approves the erosion and sediment control plan?

A

Virginia Erosion and Sediment Control Authority.

31
Q

Which two plans have to be approved before the Department can issue a Construction General permit?

A

Erosion and Sediment Control and Stormwater Management plans

32
Q

Which plan within the SWPPP described the pollution prevention measures that will take place during construction activities to protect waterways?

A

Pollution Prevention Plan

33
Q

What nutrient is measured to control the quality of stormwater discharge from a site after construction?

A

Phosphorus.

34
Q

Why is it important to control the quantity of stormwater leaving a site after construction?

A

Protects channels from concentrated flow, prevent flooding, and minimize erosion and sediment.

35
Q

What are the three conditions that offsite options can be used under to meet required phosphorous reductions?

A
  • Less than 5 acres of land will be disturbed
  • Post construction P load is less that 10 pounds per year.
  • At least 75% of the required P reductions are achieved onsite.
36
Q

Grandfathered Projects:

What is the assumed percentage of impervious surface in a watershed?

A

16%

37
Q

Grandfathered Projects:
If the percentage of proposed impervious cover for a project is less than the average land cover condition and the existing percentage of impervious cover on the site is less than or equal to the average land cover condition, what is the pollutant discharge requirement?

A

No pollutant discharge reduction required.

38
Q

Grandfathered Projects:
When utilizing technology based criteria, is the appropriate BMP selected based on the predevelopment condition or the post development condition?

A

Post-development condition.

39
Q

Grandfathered Projects:

If utilizing a comprehensive stormwater management plan, what is the requirement for offsite reductions?

A

Ensure offsite reductions equal to or greater than those that would be required on each contributing site are achieved within the same HUC or within another locally designated watershed.

40
Q

What part of the Regulations explains the administrative and technical criteria VSMP authorities must require land-disturbing activities to comply with?

A

Part II

41
Q

A locality’s VSMP authority must adopt ordinances, and other VSMP authorities must provide program documentation, that ensure compliance with what?

A

State permit conditions of subsection L in 4VAC50-60-460 and are at least as stringent as the provisions of the CG Permit 4VAC50-60-1100 et. seq.

42
Q

If a plan is determined complete, and notification has been given within 15 days of submission, low long does the authority have to review the plan?

A

60 days from the time of notification.

43
Q

How long does the VSMP authority have to determine the completeness of a stormwater management plan?

A

15 days.

44
Q

How often does the Department review each Board approved VSMP?

A

At least once every 5 years.

45
Q

If the Board determines that the deficiencies noted in the Department’s review of a VSMP and its ordinances will cause the VSMP to be out of compliance of the Act and Regulations, what are the next steps for the VSMP authority?

A

If the VSMP authority agrees to the corrective action approved by the BOard, the VSMP will be considered conditionally compliant with the Act and Regulations until a subsequent finding of compliance is issued by the Board. If the VSMP authority fails to implement the necessary compliance action identified by the Board within the specified time, the Board may take action pursuant to 62.1-44.15:38 of the Code of Virginia.

46
Q

What technical criteria do state projects have to comply with?

A

Technical criteria in Part II.

47
Q

What is the purpose of state stormwater management annual standards?

A

State agencies, such as VDOT, conduct multiple land-disturbing activities a year. Annual standards allow state agencies to follow the Regulations while saving time by not having to submit an application for each project.

48
Q

How often should stormwater management facilities be inspected by the responsible state agency?

A

Inspection of a stormwater management facility must occur at least annually and after any storm which causes the capacity of the facility’s principal spillway to be exceeded.

49
Q

By signing the Construction General Permit registration, the operator is verifying what plan has been prepared?

A

By signing the registration statement, the operator certifies the SWPPP has been prepared.

50
Q

A long-term maintenance agreement for permanent stormwater management facilities has to be approved before approving what plan?

A

Before approving a stormwater management plan, the plan reviewer must approve any long-term maintenance agreements for permanent stormwater management facilities.

51
Q

What five things must the VSMP administrator verify before permit coverage can be issued by the department?

A

1) Operator’s registration statement has been accepted by the Department
2) Stormwater management plan has been approved by the VSMP authority.
3) Long-Term maintenance agreement for permanent stormwater management facilities has been approved by the VSMP authority.

4) Erosion and sediment control plan has been approved by the VESCP authority
5) All fees have been paid.

Virginia Stormwater Management (3 decks)

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