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Permit No. VA0088641
Page 12 of 42
B., maintenance agreements may be used but are not required for stormwater control
measures that are designed to treat stormwater runoff solely from the individual residential lot
on which they are located provided that the permittee has developed and implemented a
strategy to address maintenance of such stormwater management controls. Should the
permittee choose a strategy other than a maintenance agreement, such a strategy shall be
provided in writing no later than 12 months after the effective date of this state permit and
shall include an inspection schedule, homeowner outreach and education, or other methods
targeted at promoting the long-term maintenance of such facilities.
(2) For SWM facilities that are privately maintained and for which maintenance agreements have
been established between the permittee and the owner, the permittee shall inspect all
privately maintained facilities no less than once per 5 years and conduct follow up activities
to ensure the required maintenance has been completed. Inspections may be conducted by
the permittee or their designee as defined in 9VAC25-870-114.
(3) The permittee shall continue to implement a program ensuring the inspection and
maintenance of SWM facilities that are privately maintained and for which maintenance
agreements have not been established between the permittee and the owner.
3) The permittee shall update and maintain an accurate MS4 map and information table as follows:
(a) An updated map of the MS4 owned or operated by the permittee, no later than 12 months after
the permit effective date that includes, at a minimum:
(1) MS4 outfalls discharging to surface waters, except as follows:
(i) In cases where the outfall is located outside of the MS4 permittee's legal responsibility,
the permittee may elect to map the known points of interconnection upstream and
downstream of the actual outfall; and
(ii) In cases where the MS4 outfall discharges to receiving water channelized underground,
the permittee may elect to map the point downstream at which the receiving water
emerges above ground as an outfall discharge location. If there are multiple outfalls
discharging to an underground channelized receiving water, the map shall identify that
the outfall discharge location represents more than one outfall. This is an option a
permittee may choose to use recognizing the difficulties in accessing outfalls to
underground channelized stream conveyances for purposes of mapping, screening or
monitoring.
(2) A unique identifier for each mapped item required in Part I B.2.h) 3);
(3) The name and location of receiving waters to which the MS4 outfall or point of interconnection
discharges;
(4) The MS4 regulated service area;
(5) Pipe and open channel conveyances that are upstream of MS4 outfalls; and
(6) Stormwater management facilities owned or operated by the permittee.
(b) The permittee shall update its MS4 service area map as necessary if any changes to direct
drainage to VDOT’s MS4 service area occur. The permittee shall maintain a map to assist with
coordination of VDOT MS4 coverage areas for roadways and streets. Where practical, the
permittee map shall clearly delineate gap areas that drain to VDOT MS4 areas not included asJump to an indexed page (43 of 43)