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2018 SESSION


CHAPTER 154
An Act to amend and reenact 62.1-44.15:24 and 62.1-44.15:27, as they are currently effective and as they shall become effective, of the Code of Virginia and to amend the Code of Virginia by adding a section numbered 62.1-44.15:27.2, relating to stormwater management; rural Tidewater; tiered approach.
[H 1307]
Approved March 5, 2018

 

Be it enacted by the General Assembly of Virginia:

1. That 62.1-44.15:24 and 62.1-44.15:27, as they are currently effective and as they shall become effective, of the Code of Virginia are amended and reenacted and that the Code of Virginia is amended by adding a section numbered 62.1-44.15:27.2 as follows:

62.1-44.15:24. (For expiration date, see Acts 2016, cc. 68 and 758, as amended by Acts 2017, c. 345) Definitions.

As used in this article, unless the context requires a different meaning:

"Agreement in lieu of a stormwater management plan" means a contract between the VSMP authority and the owner or permittee that specifies methods that shall be implemented to comply with the requirements of a VSMP for the construction of a single-family residence; such contract may be executed by the VSMP authority in lieu of a stormwater management plan.

"Chesapeake Bay Preservation Act land-disturbing activity" means a land-disturbing activity including clearing, grading, or excavation that results in a land disturbance equal to or greater than 2,500 square feet and less than one acre in all areas of jurisdictions designated as subject to the regulations adopted pursuant to the Chesapeake Bay Preservation provisions of this chapter.

"CWA" means the federal Clean Water Act (33 U.S.C. 1251 et seq.), formerly referred to as the Federal Water Pollution Control Act or Federal Water Pollution Control Act Amendments of 1972, P.L. 92-500, as amended by P.L. 95-217, P.L. 95-576, P.L. 96-483, and P.L. 97-117, or any subsequent revisions thereto.

"Department" means the Department of Environmental Quality.

"Director" means the Director of the Department of Environmental Quality.

"Flooding" means a volume of water that is too great to be confined within the banks or walls of the stream, water body, or conveyance system and that overflows onto adjacent lands, thereby causing or threatening damage.

"Land disturbance" or "land-disturbing activity" means a man-made change to the land surface that potentially changes its runoff characteristics including clearing, grading, or excavation, except that the term shall not include those exemptions specified in 62.1-44.15:34.

"Municipal separate storm sewer" means a conveyance or system of conveyances otherwise known as a municipal separate storm sewer system or "MS4," including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains:

1. Owned or operated by a federal, state, city, town, county, district, association, or other public body, created by or pursuant to state law, having jurisdiction or delegated authority for erosion and sediment control and stormwater management, or a designated and approved management agency under 208 of the CWA that discharges to surface waters;

2. Designed or used for collecting or conveying stormwater;

3. That is not a combined sewer; and

4. That is not part of a publicly owned treatment works.

"Municipal Separate Storm Sewer System Management Program" means a management program covering the duration of a state permit for a municipal separate storm sewer system that includes a comprehensive planning process that involves public participation and intergovernmental coordination, to reduce the discharge of pollutants to the maximum extent practicable, to protect water quality, and to satisfy the appropriate water quality requirements of the CWA and regulations, and this article and its attendant regulations, using management practices, control techniques, and system, design, and engineering methods, and such other provisions that are appropriate.

"Nonpoint source pollution" means pollution such as sediment, nitrogen, phosphorus, hydrocarbons, heavy metals, and toxics whose sources cannot be pinpointed but rather are washed from the land surface in a diffuse manner by stormwater runoff.

"Peak flow rate" means the maximum instantaneous flow from a prescribed design storm at a particular location.

"Permit" or "VSMP authority permit" means an approval to conduct a land-disturbing activity issued by the VSMP authority for the initiation of a land-disturbing activity after evidence of state VSMP general permit coverage has been provided where applicable.

"Permittee" means the person to which the permit or state permit is issued.

"Runoff volume" means the volume of water that runs off the land development project from a prescribed storm event.

"Rural Tidewater locality" means any locality that is (i) subject to the provisions of the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.) and (ii) eligible to join the Rural Coastal Virginia Community Enhancement Authority established by Chapter 76 ( 15.2-7600 et seq.) of Title 15.2.

"State permit" means an approval to conduct a land-disturbing activity issued by the Board in the form of a state stormwater individual permit or coverage issued under a state general permit or an approval issued by the Board for stormwater discharges from an MS4. Under these permits, the Commonwealth imposes and enforces requirements pursuant to the federal Clean Water Act and regulations and this article and its attendant regulations.

"Stormwater" means precipitation that is discharged across the land surface or through conveyances to one or more waterways and that may include stormwater runoff, snow melt runoff, and surface runoff and drainage.

"Stormwater management plan" means a document containing material describing methods for complying with the requirements of a VSMP.

"Subdivision" means the same as defined in 15.2-2201.

"Virginia Stormwater Management Program" or "VSMP" means a program approved by the Soil and Water Conservation Board after September 13, 2011, and until June 30, 2013, or the State Water Control Board on and after June 30, 2013, that has been established by a VSMP authority to manage the quality and quantity of runoff resulting from land-disturbing activities and shall include such items as local ordinances, rules, permit requirements, annual standards and specifications, policies and guidelines, technical materials, and requirements for plan review, inspection, enforcement, where authorized in this article, and evaluation consistent with the requirements of this article and associated regulations.

"Virginia Stormwater Management Program authority" or "VSMP authority" means an authority approved by the Board after September 13, 2011, to operate a Virginia Stormwater Management Program or the Department. An authority may include a locality; state entity, including the Department; federal entity; or, for linear projects subject to annual standards and specifications in accordance with subsection B of 62.1-44.15:31, electric, natural gas, and telephone utility companies, interstate and intrastate natural gas pipeline companies, railroad companies, or authorities created pursuant to 15.2-5102.

"Water quality volume" means the volume equal to the first one-half inch of runoff multiplied by the impervious surface of the land development project.

"Water quantity technical criteria" means standards set forth in regulations adopted pursuant to this article that establish minimum design criteria for measures to control localized flooding and stream channel erosion.

"Watershed" means a defined land area drained by a river or stream, karst system, or system of connecting rivers or streams such that all surface water within the area flows through a single outlet. In karst areas, the karst feature to which water drains may be considered the single outlet for the watershed.

62.1-44.15:24. (For effective date, see Acts 2016, cc. 68 and 758, as amended by Acts 2017, c. 345) Definitions.

As used in this article, unless the context requires a different meaning:

"Agreement in lieu of a plan" means a contract between the VESMP authority or the Board acting as a VSMP authority and the owner or permittee that specifies methods that shall be implemented to comply with the requirements of this article for the construction of a single-family detached residential structure; such contract may be executed by the VESMP authority in lieu of a soil erosion control and stormwater management plan or by the Board acting as a VSMP authority in lieu of a stormwater management plan.

"Applicant" means any person submitting a soil erosion control and stormwater management plan to a VESMP authority, or a stormwater management plan to the Board when it is serving as a VSMP authority, for approval in order to obtain authorization to commence a land-disturbing activity.

"CWA" means the federal Clean Water Act (33 U.S.C. 1251 et seq.), formerly referred to as the Federal Water Pollution Control Act or Federal Water Pollution Control Act Amendments of 1972, P.L. 92-500, as amended by P.L. 95-217, P.L. 95-576, P.L. 96-483, and P.L. 97-117, or any subsequent revisions thereto.

"Department" means the Department of Environmental Quality.

"Director" means the Director of the Department of Environmental Quality.

"Erosion impact area" means an area of land that is not associated with a current land-disturbing activity but is subject to persistent soil erosion resulting in the delivery of sediment onto neighboring properties or into state waters. This definition shall not apply to any lot or parcel of land of 10,000 square feet or less used for residential purposes or any shoreline where the erosion results from wave action or other coastal processes.

"Flooding" means a volume of water that is too great to be confined within the banks or walls of the stream, water body, or conveyance system and that overflows onto adjacent lands, thereby causing or threatening damage.

"Land disturbance" or "land-disturbing activity" means a man-made change to the land surface that may result in soil erosion or has the potential to change its runoff characteristics, including construction activity such as the clearing, grading, excavating, or filling of land.

"Land-disturbance approval" means the same as that term is defined in 62.1-44.3.

"Municipal separate storm sewer" or "MS4" means the same as that term is defined in 62.1-44.3.

"Municipal Separate Storm Sewer System Management Program" means a management program covering the duration of a permit for a municipal separate storm sewer system that includes a comprehensive planning process that involves public participation and intergovernmental coordination, to reduce the discharge of pollutants to the maximum extent practicable, to protect water quality, and to satisfy the appropriate water quality requirements of the CWA and regulations, and this article and its attendant regulations, using management practices, control techniques, and system, design, and engineering methods, and such other provisions that are appropriate.

"Natural channel design concepts" means the utilization of engineering analysis and fluvial geomorphic processes to create, rehabilitate, restore, or stabilize an open conveyance system for the purpose of creating or recreating a stream that conveys its bankfull storm event within its banks and allows larger flows to access its bankfull bench and its floodplain.

"Nonpoint source pollution" means pollution such as sediment, nitrogen, phosphorus, hydrocarbons, heavy metals, and toxics whose sources cannot be pinpointed but rather are washed from the land surface in a diffuse manner by stormwater.

"Owner" means the same as that term is defined in 62.1-44.3. For a regulated land-disturbing activity that does not require a permit, "owner" also means the owner or owners of the freehold of the premises or lesser estate therein, mortgagee or vendee in possession, assignee of rents, receiver, executor, trustee, lessee, or other person, firm, or corporation in control of a property.

"Peak flow rate" means the maximum instantaneous flow from a prescribed design storm at a particular location.

"Permit" means a Virginia Pollutant Discharge Elimination System (VPDES) permit issued by the Board pursuant to 62.1-44.15 for stormwater discharges from a land-disturbing activity or MS4.

"Permittee" means the person to whom the permit is issued.

"Runoff volume" means the volume of water that runs off the land development project from a prescribed storm event.

"Rural Tidewater locality" means any locality that is (i) subject to the provisions of the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.) and (ii) eligible to join the Rural Coastal Virginia Community Enhancement Authority established by Chapter 76 ( 15.2-7600 et seq.) of Title 15.2.

"Soil erosion" means the movement of soil by wind or water into state waters or onto lands in the Commonwealth.

"Soil Erosion Control and Stormwater Management plan" or "plan" means a document describing methods for controlling soil erosion and managing stormwater in accordance with the requirements adopted pursuant to this article.

"Stormwater," for the purposes of this article, means precipitation that is discharged across the land surface or through conveyances to one or more waterways and that may include stormwater runoff, snow melt runoff, and surface runoff and drainage.

"Stormwater management plan" means a document containing material describing methods for complying with the requirements of a VSMP.

"Subdivision" means the same as that term is defined in 15.2-2201.

"Virginia Erosion and Sediment Control Program" or "VESCP" means a program approved by the Board that is established by a VESCP authority pursuant to Article 2.4 ( 62.1-44.15:51 et seq.) for the effective control of soil erosion, sediment deposition, and nonagricultural runoff associated with a land-disturbing activity to prevent the unreasonable degradation of properties, stream channels, waters, and other natural resources. The VESCP shall include, where applicable, such items as local ordinances, rules, policies and guidelines, technical materials, and requirements for plan review, inspection, and evaluation consistent with the requirements of Article 2.4 ( 62.1-44.15:51 et seq.).

"Virginia Erosion and Sediment Control Program authority" or "VESCP authority" means a locality that is approved by the Board to operate a Virginia Erosion and Sediment Control Program in accordance with Article 2.4 ( 62.1-44.15:51 et seq.). Only a locality for which the Department administered a Virginia Stormwater Management Program as of July 1, 2017, is authorized to choose to operate a VESCP pursuant to Article 2.4 ( 62.1-44.15:51 et seq.).

"Virginia Erosion and Stormwater Management Program" or "VESMP" means a program established by a VESMP authority for the effective control of soil erosion and sediment deposition and the management of the quality and quantity of runoff resulting from land-disturbing activities to prevent the unreasonable degradation of properties, stream channels, waters, and other natural resources. The program shall include such items as local ordinances, rules, requirements for permits and land-disturbance approvals, policies and guidelines, technical materials, and requirements for plan review, inspection, and enforcement consistent with the requirements of this article.

"Virginia Erosion and Stormwater Management Program authority" or "VESMP authority" means the Board or a locality approved by the Board to operate a Virginia Erosion and Stormwater Management Program. For state agency or federal entity land-disturbing activities and land-disturbing activities subject to approved standards and specifications, the Board shall serve as the VESMP authority.

"Virginia Stormwater Management Program" or "VSMP" means a program established by the Board pursuant to 62.1-44.15:27.1 on behalf of a locality on or after July 1, 2014, to manage the quality and quantity of runoff resulting from any land-disturbing activity that (i) disturbs one acre or more of land or (ii) disturbs less than one acre of land and is part of a larger common plan of development or sale that results in one acre or more of land disturbance.

"Virginia Stormwater Management Program authority" or "VSMP authority" means the Board when administering a VSMP on behalf of a locality that, pursuant to subdivision B 3 of 62.1-44.15:27, has chosen not to adopt and administer a VESMP.

"Water quality technical criteria" means standards set forth in regulations adopted pursuant to this article that establish minimum design criteria for measures to control nonpoint source pollution.

"Water quantity technical criteria" means standards set forth in regulations adopted pursuant to this article that establish minimum design criteria for measures to control localized flooding and stream channel erosion.

"Watershed" means a defined land area drained by a river or stream, karst system, or system of connecting rivers or streams such that all surface water within the area flows through a single outlet. In karst areas, the karst feature to which water drains may be considered the single outlet for the watershed.

62.1-44.15:27. (For expiration date, see Acts 2016, cc. 68 and 758, as amended by Acts 2017, c. 345) Establishment of Virginia Stormwater Management Programs.

A. Any locality that operates a regulated MS4 or that notifies the Department of its decision to participate in the establishment of a VSMP shall be required to adopt a VSMP for land-disturbing activities consistent with the provisions of this article according to a schedule set by the Department. Such schedule shall require implementation no later than July 1, 2014. Thereafter, the Department shall provide an annual schedule by which localities can submit applications to implement a VSMP. Localities subject to this subsection are authorized to coordinate plan review and inspections with other entities in accordance with subsection H.

The Department shall operate a VSMP on behalf of any locality that does not operate a regulated MS4 and that does not notify the Department, according to a schedule set by the Department, of its decision to participate in the establishment of a VSMP. A locality that decides not to establish a VSMP shall still comply with the requirements set forth in this article and attendant regulations as required to satisfy the stormwater flow rate capacity and velocity requirements set forth in the Erosion and Sediment Control Law ( 62.1-44.15:51 et seq.). A locality that is subject to the provisions of the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.) also shall adopt requirements set forth in this article and attendant regulations as required to regulate Chesapeake Bay Preservation Act land-disturbing activities in accordance with 62.1-44.15:28. To comply with the water quantity technical criteria set forth in this article and attendant regulations, a rural Tidewater locality may adopt a tiered approach to water quantity management for Chesapeake Bay Preservation Act land-disturbing activities pursuant to 62.1-44.15:27.2.

Notwithstanding any other provision of this subsection, any county that operates an MS4 that became a regulated MS4 on or after January 1, 2014 may elect, on a schedule set by the Department, to defer the implementation of the county's VSMP until no later than January 1, 2015. During this deferral period, when such county thus lacks the legal authority to operate a VSMP, the Department shall operate a VSMP on behalf of the county and address post-construction stormwater runoff and the required design criteria for stormwater runoff controls. Any such county electing to defer the establishment of its VSMP shall still comply with the requirements set forth in this article and attendant regulations as required to satisfy the stormwater flow rate capacity and velocity requirements set forth in the Erosion and Sediment Control Law ( 62.1-44.15:51 et seq.).

B. Any town, including a town that operates a regulated MS4, lying within a county that has adopted a VSMP in accordance with subsection A may decide, but shall not be required, to become subject to the county's VSMP. Any town lying within a county that operates an MS4 that became a regulated MS4 on or after January 1, 2014 may elect to become subject to the county's VSMP according to the deferred schedule established in subsection A. During the county's deferral period, the Department shall operate a VSMP on behalf of the town and address post-construction stormwater runoff and the required design criteria for stormwater runoff controls for the town as provided in subsection A. If a town lies within the boundaries of more than one county, the town shall be considered to be wholly within the county in which the larger portion of the town lies. Towns shall inform the Department of their decision according to a schedule established by the Department. Thereafter, the Department shall provide an annual schedule by which towns can submit applications to adopt a VSMP.

C. In support of VSMP authorities, the Department shall:

1. Provide assistance grants to localities not currently operating a local stormwater management program to help the localities to establish their VSMP.

2. Provide technical assistance and training.

3. Provide qualified services in specified geographic areas to a VSMP to assist localities in the administration of components of their programs. The Department shall actively assist localities in the establishment of their programs and in the selection of a contractor or other entity that may provide support to the locality or regional support to several localities.

D. The Department shall develop a model ordinance for establishing a VSMP consistent with this article and its associated regulations, including the Virginia Stormwater Management Program (VSMP) General Permit for Discharges of Stormwater from Construction Activities.

E. Each locality that administers an approved VSMP shall, by ordinance, establish a VSMP that shall be administered in conjunction with a local MS4 program and a local erosion and sediment control program if required pursuant to the Erosion and Sediment Control Law ( 62.1-44.15:51 et seq.), and which shall include the following:

1. Consistency with regulations adopted in accordance with provisions of this article;

2. Provisions for long-term responsibility for and maintenance of stormwater management control devices and other techniques specified to manage the quality and quantity of runoff; and

3. Provisions for the integration of the VSMP with local erosion and sediment control, flood insurance, flood plain management, and other programs requiring compliance prior to authorizing construction in order to make the submission and approval of plans, issuance of permits, payment of fees, and coordination of inspection and enforcement activities more convenient and efficient both for the local governments and those responsible for compliance with the programs.

F. The Board may approve a state entity, including the Department, federal entity, or, for linear projects subject to annual standards and specifications, electric, natural gas, and telephone utility companies, interstate and intrastate natural gas pipeline companies, railroad companies, or authorities created pursuant to 15.2-5102 to operate a Virginia Stormwater Management Program consistent with the requirements of this article and its associated regulations and the VSMP authority's Department-approved annual standards and specifications. For these programs, enforcement shall be administered by the Department and the Board where applicable in accordance with the provisions of this article.

G. The Board shall approve a VSMP when it deems a program consistent with this article and associated regulations, including the Virginia Stormwater Management Program (VSMP) General Permit for Discharges of Stormwater from Construction Activities.

H. A VSMP authority may enter into agreements or contracts with soil and water conservation districts, adjacent localities, or other public or private entities to carry out or assist with the responsibilities of this article. A VSMP authority may enter into contracts with third-party professionals who hold certificates of competence in the appropriate subject areas, as provided in subsection A of 62.1-44.15:30, to carry out any or all of the responsibilities that this article requires of a VSMP authority, including plan review and inspection but not including enforcement.

I. If a locality establishes a VSMP, it shall issue a consolidated stormwater management and erosion and sediment control permit that is consistent with the provisions of the Erosion and Sediment Control Law ( 62.1-44.15:51 et seq.). When available in accordance with subsection J, such permit, where applicable, shall also include a copy of or reference to state VSMP permit coverage authorization to discharge.

J. Upon the development of an online reporting system by the Department, but no later than July 1, 2014, a VSMP authority shall then be required to obtain evidence of state VSMP permit coverage where it is required prior to providing approval to begin land disturbance.

K. Any VSMP adopted pursuant to and consistent with this article shall be considered to meet the stormwater management requirements under the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.) and attendant regulations, and effective July 1, 2014, shall not be subject to local program review under the stormwater management provisions of the Chesapeake Bay Preservation Act.

L. All VSMP authorities shall comply with the provisions of this article and the stormwater management provisions of the Erosion and Sediment Control Law ( 62.1-44.15:51 et seq.) and related regulations. The VSMP authority responsible for regulating the land-disturbing activity shall require compliance with the issued permit, permit conditions, and plan specifications. The state shall enforce state permits.

62.1-44.15:27. (For effective date, see Acts 2016, cc. 68 and 758, as amended by Acts 2017, c. 345) Virginia Programs for Erosion Control and Stormwater Management.

A. Any locality that operates a regulated MS4 or that administers a Virginia Stormwater Management Program (VSMP) as of July 1, 2017, shall be required to adopt and administer a VESMP consistent with the provisions of this article that regulates any land-disturbing activity that (i) disturbs 10,000 square feet or more or (ii) disturbs 2,500 square feet or more in an area of a locality designated as a Chesapeake Bay Preservation Area pursuant to the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.). The VESMP shall be adopted according to a process established by the Department.

B. Any locality that does not operate a regulated MS4 and for which the Department administers a VSMP as of July 1, 2017, shall choose one of the following options and shall notify the Department of its choice according to a process established by the Department:

1. Adopt and administer a VESMP consistent with the provisions of this article that regulates any land-disturbing activity that (i) disturbs 10,000 square feet or more or (ii) disturbs 2,500 square feet or more in an area of a locality designated as a Chesapeake Bay Preservation Area pursuant to the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.);

2. Adopt and administer a VESMP consistent with the provisions of this article that regulates any land-disturbing activity that (i) disturbs 10,000 square feet or more or (ii) disturbs 2,500 square feet or more in an area of a locality designated as a Chesapeake Bay Preservation Area pursuant to the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.), except that the Department shall provide the locality with review of the plan required by 62.1-44.15:34 and provide a recommendation to the locality on the plan's compliance with the water quality and water quantity technical criteria; or

3. Adopt and administer a VESCP pursuant to Article 2.4 ( 62.1-44.15:51 et seq.) that regulates any land-disturbing activity that (i) disturbs 10,000 square feet or more or (ii) disturbs 2,500 square feet or more in an area of a locality designated as a Chesapeake Bay Preservation Area pursuant to the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.). For such a land-disturbing activity in a Chesapeake Bay Preservation Area, the VESCP authority also shall adopt requirements set forth in this article and attendant regulations as required to regulate those activities in accordance with 62.1-44.15:28 and 62.1-44.15:34.

The Board shall administer a VSMP on behalf of each VESCP authority for any land-disturbing activity that (a) disturbs one acre or more of land or (b) disturbs less than one acre of land and is part of a larger common plan of development or sale that results in one acre or greater of land disturbance.

C. Any town that is required to or elects to adopt and administer a VESMP or VESCP, as applicable, may choose one of the following options and shall notify the Department of its choice according to a process established by the Department:

1. Any town, including a town that operates a regulated MS4, lying within a county may enter into an agreement with the county to become subject to the county's VESMP. If a town lies within the boundaries of more than one county, it may enter into an agreement with any of those counties that operates a VESMP.

2. Any town that chooses not to adopt and administer a VESMP pursuant to subdivision B 3 and that lies within a county may enter into an agreement with the county to become subject to the county's VESMP or VESCP, as applicable. If a town lies within the boundaries of more than one county, it may enter into an agreement with any of those counties.

3. Any town that is subject to the provisions of the Chesapeake Bay Preservation Act ( 62.1-44.15:67 et seq.) may enter into an agreement with a county pursuant to subdivision C 1 or 2 only if the county administers a VESMP for land-disturbing activities that disturb 2,500 square feet or more.

D. Any locality that chooses not to implement a VESMP pursuant to subdivision B 3 may notify the Department at any time that it has chosen to implement a VESMP pursuant to subdivision B 1 or 2. Any locality that chooses to implement a VESMP pursuant to subdivision B 2 may notify the Department at any time that it has chosen to implement a VESMP pursuant to subdivision B 1. A locality may petition the Board at any time for approval to change from fully administering a VESMP pursuant to subdivision B 1 to administering a VESMP in coordination with the Department pursuant to subdivision B 2 due to a significant change in economic conditions or other fiscal emergency in the locality. The provisions of the Administrative Process Act ( 2.2-4000 et seq.) shall govern any appeal of the Board's decision.

E. To comply with the water quantity technical criteria set forth in this article and attendant regulations for land-disturbing activities that disturb an area of 2,500 square feet or more but less than one acre, any rural Tidewater locality may adopt a tiered approach to water quantity management pursuant to 62.1-44.15:27.2.

F. In support of VESMP authorities, the Department shall provide technical assistance and training and general assistance to localities in the establishment and administration of their individual or regional programs.

F. G. The Department shall develop a model ordinance for establishing a VESMP consistent with this article.

G. H. Each locality that operates a regulated MS4 or that chooses to administer a VESMP shall, by ordinance, establish a VESMP that shall be administered in conjunction with a local MS4 management program, if applicable, and which shall include the following:

1. Ordinances, policies, and technical materials consistent with regulations adopted in accordance with this article;

2. Requirements for land-disturbance approvals;

3. Requirements for plan review, inspection, and enforcement consistent with the requirements of this article, including provisions requiring periodic inspections of the installation of stormwater management measures. A VESMP authority may require monitoring and reports from the person responsible for meeting the permit conditions to ensure compliance with the permit and to determine whether the measures required in the permit provide effective stormwater management;

4. Provisions charging each applicant a reasonable fee to defray the cost of program administration for a regulated land-disturbing activity that does not require permit coverage. Such fee may be in addition to any fee charged pursuant to the statewide fee schedule established in accordance with subdivision 9 of 62.1-44.15:28, although payment of fees may be consolidated in order to provide greater convenience and efficiency for those responsible for compliance with the program. A VESMP authority shall hold a public hearing prior to establishing such fees. The fee shall not exceed an amount commensurate with the services rendered, taking into consideration the time, skill, and the VESMP authority's expense involved;

5. Provisions for long-term responsibility for and maintenance of stormwater management control devices and other techniques specified to manage the quality and quantity of runoff; and

6. Provisions for the coordination of the VESMP with flood insurance, flood plain management, and other programs requiring compliance prior to authorizing land disturbance in order to make the submission and approval of plans, issuance of land-disturbance approvals, payment of fees, and coordination of inspection and enforcement activities more convenient and efficient both for the local governments and those responsible for compliance with the programs.

H. I. The Board shall approve a VESMP when it deems a program consistent with this article and associated regulations.

I. J. A VESMP authority may enter into agreements or contracts with the Department, soil and water conservation districts, adjacent localities, planning district commissions, or other public or private entities to carry out or assist with plan review and inspections. A VESMP authority may enter into contracts with third-party professionals who hold certifications in the appropriate subject areas, as provided in subsection A of 62.1-44.15:30, to carry out any or all of the responsibilities that this article requires of a VESMP authority, including plan review and inspection but not including enforcement.

J. K. A VESMP authority shall be required to obtain evidence of permit coverage from the Department's online reporting system, where such coverage is required, prior to providing land-disturbance approval.

K. L. The VESMP authority responsible for regulating the land-disturbing activity shall require compliance with its applicable ordinances and the conditions of its land-disturbance approval and plan specifications. The Board shall enforce permits and require compliance with its applicable regulations, including when serving as a VSMP authority in a locality that chose not to adopt a VESMP in accordance with subdivision B 3.

62.1-44.15:27.2. Rural Tidewater localities; water quantity technical criteria; tiered approach.

A. For determining the water quantity technical criteria applicable to a land disturbance equal to or greater than 2,500 square feet but less than one acre, any rural Tidewater locality may elect to use certain tiered water quantity control standards based on the percentage of impervious cover in the watershed as provided in this section. The establishment and conduct of the tiered approach by the locality pursuant to this section shall be subject to review by the Department. The Board shall adopt regulations to carry out provisions of this section.

B. 1. The local governing body shall make, or cause to be made, a watershed map showing the boundaries of the locality. The governing body shall use the most recent version of Virginia's 6th order National Watershed Boundary Dataset to show the boundaries of each watershed located partially or wholly within the locality. The map shall indicate the percentage of impervious cover within each watershed. Data provided by the Virginia Geographic Information Network (VGIN) shall be sufficient for the initial determination of impervious cover percentage at the time of the initial adoption of the map.

2. The watershed map also shall show locations at which the governing body expects or proposes that development should occur and may indicate the projected future percentage of impervious cover based on proposed development. The governing body may designate certain areas within a watershed in which it proposes that denser-than-average development shall occur and may designate environmentally sensitive areas in which the energy balance method for water quantity management, as set forth in the regulations adopted by the Board pursuant to this article, shall apply.

3. After the watershed map has been made, the governing body may then approve and adopt the map by a majority vote of its membership and publish it as the official watershed map of the locality. No official watershed map shall be adopted by the governing body or have any effect until it is approved by an ordinance duly passed by the governing body of the locality after a public hearing, preceded by public notice as required by 15.2-2204. Within 30 days after adoption of the official watershed map, the governing body shall cause the map to be filed in the office of the clerk of the circuit court.

4. At least once each year, the local governing body shall by majority vote make additions to or modifications of the official watershed map to reflect actual development projects. The governing body shall change the indication on the map of the impervious cover percentage within a watershed where the percentage has changed and shall update the map and supporting datasets with actual development project information, including single-family housing projects and any projects covered by the General Permit for Discharges of Stormwater from Construction Activities and administered by the Department for opt-out localities pursuant to 62.1-44.15:27. The governing body may incorporate into the official watershed map the most recent VGIN data, including data on state and federal projects that are not reviewed or approved by the locality. The governing body shall keep current its impervious cover percentage for each watershed located within the locality, as reflected in the official watershed map, and shall make the map and such percentages available to the public.

5. The locality shall notify the Department and update the official map within 12 months of the approval of the development plan for any project that exceeds the impervious cover percentage of the watershed in which it is located and causes the percentage for that watershed to rise such that the watershed steps up to the next higher tier pursuant to subsection C.

6. No official watershed map or its adopting or amending ordinances shall take precedence over any duly adopted zoning ordinance, comprehensive plan, or other local land-use ordinance, and in the case of a conflict, the official watershed map or ordinance shall yield to such land-use ordinance.

C. When the locality evaluates any development project in a watershed that is depicted on the official watershed map as having an impervious cover percentage of:

1. Less than five percent, the locality shall apply the regulatory minimum standards and criteria adopted by the Board pursuant to Article 2.4 ( 62.1-44.15:51 et seq.) and in effect prior to July 1, 2014, for the protection of downstream properties and waterways from sediment deposition, erosion, and damage due to increases in volume, velocity, and peak flow rate of stormwater runoff for the stated frequency storm of 24-hour duration.

2. Five percent or more but less than 7.5 percent, the locality shall require practices designed to detain and release over a 24-hour period the expected rainfall resulting from the one year, 24-hour storm, which practices shall be exempt from any flow rate capacity and velocity requirements for natural or man-made channels.

3. Seven and one-half percent or more, the locality shall apply the energy balance method as set forth in regulations adopted by the Board.

D. The locality shall require that any project whose construction would cause the impervious cover percentage of the watershed in which it is located to rise, such that the watershed steps up to the next higher tier, shall meet the current water quantity technical criteria using the energy balance method or a more stringent alternative.

2. That the Department of Environmental Quality shall utilize an appropriate new or existing Regulatory Advisory Panel to assist in clarifying the interpretation and application of subdivision 19 of 9VAC25-840-40 (Minimum Standard 19).