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The Permit the City Already Signed

10 min read

On January 24, 2024, the Virginia Department of Environmental Quality reissued Permit No. VA0088676 — the city's authorization to discharge stormwater from its Municipal Separate Storm Sewer System into seventeen watersheds across Virginia Beach.

The permit is 43 pages. It runs through January 25, 2029. It carries the most aggressive pollutant reduction requirements the city has ever faced: 100 percent of the Chesapeake Bay TMDL nitrogen and phosphorus reductions must be achieved by June 30, 2028.

The city signed it.

Now consider what happens when you approve a 24-unit condominium development on an undeveloped 2.5-acre lot in FEMA Zone AE, with stormwater that discharges through four 36-inch pipes under Virginia Avenue, into Lake Rudee, through Rudee Inlet, and out to the Atlantic Ocean.

The permit says reduce pollutants. The development adds them.

What Is an MS4 Permit?

Virginia Beach operates one of the largest municipal separate storm sewer systems in Virginia — a network of pipes, ditches, channels, and outfalls that collects stormwater from roads, rooftops, parking lots, and developed land and discharges it into local waterways.

Under the Clean Water Act and the Virginia Stormwater Management Act, the city must hold a permit for these discharges. That permit — VA0088676 — is not optional. It is a binding legal obligation between the City of Virginia Beach and the Commonwealth of Virginia.

The permit requires the city to:

  • Control the contribution of pollutants to the storm sewer system (Part I.A.3.a)
  • Reduce nitrogen and phosphorus loads from existing urban development by 40% by June 30, 2026, and 100% by June 30, 2028 (Part I.D.1.b)
  • Offset 100% of increased pollutant loads from all new development by June 30, 2028 (Part I.D.1.c)
  • Maintain and inspect all stormwater management facilities that discharge into the MS4 (Part I.B.2.h)
  • Report annually to DEQ on progress, BMPs implemented, and any noncompliance (Part I.E)

The permit also explicitly names the receiving water where 1001 Virginia Avenue's stormwater ends up: Atlantic Ocean-Rudee Inlet (AO23) — one of seventeen 6th-order hydrologic units covered by the permit.

The Math: What 24 Condos Add to Rudee Inlet

The Chesapeake Bay Watershed Model provides standardized pollutant loading rates for urban land. These are the same rates Virginia Beach uses to calculate its TMDL obligations under the MS4 permit (Table 1a/1b, pages 23-24):

Surface Type Nitrogen (lbs/acre/year) Phosphorus (lbs/acre/year)
Regulated urban impervious 9.39 1.76
Regulated urban pervious 6.99 0.50

Now apply those rates to the 1001 Virginia Avenue site:

Before Development (~10% impervious)

Acres Nitrogen Phosphorus
Impervious 0.25 2.35 lbs/yr 0.44 lbs/yr
Pervious 2.25 15.73 lbs/yr 1.13 lbs/yr
Total 2.50 18.08 lbs/yr 1.57 lbs/yr

After Development (~65% impervious)

Twenty-four condominiums, driveways, parking areas (51 spaces), and associated hardscape convert approximately 1.63 acres of pervious land to impervious surface.

Acres Nitrogen Phosphorus
Impervious 1.63 15.31 lbs/yr 2.87 lbs/yr
Pervious 0.87 6.08 lbs/yr 0.44 lbs/yr
Total 2.50 21.39 lbs/yr 3.31 lbs/yr

The Increase

Pollutant Before After Increase
Total Nitrogen 18.08 lbs/yr 21.39 lbs/yr +3.31 lbs/yr (+18%)
Total Phosphorus 1.57 lbs/yr 3.31 lbs/yr +1.74 lbs/yr (+111%)

The development more than doubles the phosphorus load entering Rudee Inlet from this site.

Under the Virginia Stormwater Management Program (9VAC25-875-580), the maximum allowable post-development phosphorus load is 0.41 lbs/acre/year for plans submitted before July 1, 2025, or 0.26 lbs/acre/year for plans submitted after. For a 2.5-acre site:

  • At the 0.41 standard: maximum allowable = 1.03 lbs TP/year
  • At the 0.26 standard: maximum allowable = 0.65 lbs TP/year

The unmitigated post-development load is 3.31 lbs/year — roughly three to five times the permitted maximum. The developer must remove 65-80% of the phosphorus load through on-site treatment or credit purchase.

The Credit Purchase Problem

At the March 31 civic league meeting, Seth Edwards confirmed the developer is "providing some treatment on site and purchasing credits" for water quality compliance.

This is legal. Virginia Code section 62.1-44.15:35 allows developers to purchase nutrient credits when on-site BMPs cannot achieve the required reductions. But there is a critical distinction between what satisfies the paper requirement and what happens to the water.

What Credits Do

Nutrient credits are generated by projects that reduce pollution somewhere else — often agricultural BMPs, stream restoration, or wastewater treatment plant upgrades. When a developer buys credits, the regulatory ledger shows the required reduction was "achieved." The site plan gets checked off.

What Credits Don't Do

Credits do not reduce the actual pollutant load entering Rudee Inlet from this site. The stormwater from 24 condominiums and 51 parking spaces still flows through the underground chambers, through the ditch, through the four 36-inch pipes, into the inlet, and out to the Atlantic Ocean — carrying nitrogen, phosphorus, sediment, bacteria, and hydrocarbons at full urban loading rates.

The credit was generated somewhere else. The pollution arrives here.

The Upstream Requirement

Virginia law adds an important constraint: when a development discharges to a waterway with an established TMDL, credits must be generated upstream of where the discharge reaches the impaired water (section 62.1-44.15:35). The law also requires that on-site options must be "considered and found not available" before credits can be used.

The developer's own geotechnical consultant found zero soil infiltration capacity at all three test locations on the site. This means infiltration-based BMPs — the most effective on-site phosphorus treatment — cannot function as designed. The developer is essentially saying: the site cannot treat its own pollution, so we will pay someone else to offset it on paper.

The Disconnect: City Obligations vs. Development Approvals

Here is where the structural problem becomes visible.

Virginia Beach's MS4 permit (Part I.A.2) states: "The permittee is responsible for compliance with this state permit. The permittee shall implement and update the MS4 Program Plan to ensure compliance."

The permit requires the city to reduce the load of total nitrogen and total phosphorus from existing developed lands by 100% of the Level 2 Scoping Run Reductions by June 30, 2028 (Part I.D.1.b). Simultaneously, the city must offset 100% of increased loads from new development (Part I.D.1.c).

The city is spending millions on stormwater retrofits, stream restoration, nutrient credit purchases, and BMP maintenance to comply with these requirements. The 2025 Chesapeake Bay TMDL Action Plan acknowledges the city plans to use nutrient trading to cover reductions it cannot achieve through physical projects alone.

Meanwhile, the same city's development review process is approving projects that add impervious surface, increase pollutant loading, and rely on the same credit market the city itself needs to meet its own obligations.

Every acre of new impervious surface adds to the pollutant load the city must offset. Every credit purchased by a developer is one fewer credit available — or one more expensive — for the city's own compliance.

The Permit Says The Development Does
Reduce nitrogen and phosphorus loads Doubles phosphorus load from this site
Control pollutant contributions to the MS4 Adds 1.38 acres of new impervious surface discharging to the MS4
Offset 100% of new development loads by 2028 Developer purchases credits — offsets on paper, not in the receiving water
Maintain and inspect stormwater facilities Underground chambers on zero-infiltration soil become a privately maintained facility the city must track
Report progress toward TMDL reductions annually New impervious acres make the reduction math harder every year

Rudee Inlet: The Receiving Water Nobody Discussed

The MS4 permit requires the city to maintain an outfall information table (Part I.B.2.h.3.c) that includes, for each outfall, whether the receiving water is listed as impaired in Virginia's 305(b)/303(d) Water Quality Assessment.

Rudee Inlet is not some remote drainage channel. It is a heavily used recreational waterway — home to a marina, charter fishing fleet, and the only ocean inlet in Virginia Beach south of the Chesapeake Bay Bridge-Tunnel. Bacteria levels during the swimming season have caused periodic beach advisories. The city has invested in multiple stormwater projects specifically targeting water quality in the Rudee Inlet watershed, including the 17th Street Regional Stormwater Facility and the Brooklyn Avenue Water Quality Improvement project.

At the March 31 meeting, Seth Edwards confirmed the development's stormwater system is "directly connected to the tidal outfall" at Rudee Inlet. The underground chambers don't just manage rainfall. During high tide events, they contend with ocean water pushing back through the system.

The city is spending money to clean up Rudee Inlet. The development adds pollutant load to Rudee Inlet. These two facts were not mentioned in the same room.

What the Permit Requires That Nobody Is Checking

Several MS4 permit requirements have direct relevance to the 1001 Virginia Avenue review that have not been publicly addressed:

Construction Site Runoff (Part I.B.2.a)

The permit requires the city to implement erosion and sediment control programs and report annually on "the number of regulated land disturbing activities approved and the total number of acres disturbed." The 839 dump trucks carrying fill to this site will create a prolonged land-disturbing activity on a tidal-influenced lot with zero infiltration capacity. The permit requires inspections and enforcement of erosion and sediment controls during construction.

Stormwater Facility Maintenance (Part I.B.2.h.2)

For privately maintained stormwater facilities that discharge into the MS4, the permit requires the city to "ensure proper maintenance." This means the underground chamber system at 1001 Virginia Avenue — once built — becomes a privately maintained BMP that the city is obligated to track, inspect, and ensure is functioning. On a site with zero soil infiltration, in a tidal flood zone, connected directly to Rudee Inlet.

If the facility fails — as happened at Ashville Park — the city's MS4 permit compliance is directly affected. The permit requires the city to report "actions taken by the permittee to address failure of privately maintained SWM facilities owners to abide by maintenance agreements."

Illicit Discharge Detection (Part I.B.2.e)

The permit requires dry weather screening "in areas of concern" including "areas upstream of sensitive ecosystems." Rudee Inlet connects to a tidal ecosystem that supports osprey, herons, and other wildlife. The permit specifically requires screening at outfalls near "environmentally sensitive features downstream."

Legal Authority (Part I.A.3)

The permit states the city "shall maintain and utilize its legal authority" to "control the contribution of pollutants to the MS4." This is not a suggestion. It is a permit condition. The question is whether the city's site plan review process — which Warren confirmed reviews only "what the builder is providing to us" against adopted code — constitutes adequate utilization of that legal authority when the result is increased pollutant loading to an already-stressed receiving water.

The 2028 Deadline

The most significant new requirement in the reissued MS4 permit is the June 30, 2028 deadline for 100% of the Chesapeake Bay TMDL pollutant reductions. The city has acknowledged it will need nutrient trading to meet this target.

The 1001 Virginia Avenue project, if approved and built, will be operational before that deadline. It will add impervious surface. It will increase pollutant loads. It will require credits to offset. And every credit used by the developer is a credit that cannot be counted toward the city's own compliance obligation.

The permit is explicit (Part I.D.1.c): the city must offset 100% of increased loads from new sources — defined as "pervious and impervious urban land uses served by the MS4 developed or redeveloped on or after July 1, 2009."

This is not a hypothetical conflict. It is an arithmetic one. The city has a fixed pollution budget. New impervious development increases the total that must be offset. The permit deadline does not move.

The Question Nobody Is Asking

Fifteen city departments review the 1001 Virginia Avenue site plan. They check zoning setbacks, utility connections, fire access, stormwater detention, erosion controls, and traffic generation. Each department reviews within its lane.

But nobody is asking the cross-cutting question: Does approving this project make it harder for the city to comply with its own MS4 permit?

The answer, based on the math, is yes. The development adds 1.38 acres of new impervious surface to the Rudee Inlet watershed. It more than doubles the phosphorus load from the site. The on-site soil cannot infiltrate water. The stormwater system connects directly to a tidally influenced outfall. The developer will purchase credits to satisfy the VSMP requirement on paper, but the actual pollutant load entering Rudee Inlet increases.

The city signed a permit committing to reduce pollutant loads. The city's development review process is approving projects that increase them. These two facts exist in the same government, but they have never been discussed in the same meeting.

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