How to access environment variables in Cloudflare Workers when using RPC binding

export class WorkerEmail extends WorkerEntrypoint {
  // Currently, entrypoints without a named handler are not supported

  async fetch(request: Request): Promise<Response> {
    const url = new URL(request.url);
    if (url.pathname === "/send" && request.method === "POST") {
      const { email, firstName }: { email: string; firstName: string } =
        await request.json();
      return this.send(email, firstName, this.env as Env); // Attempting to pass env here
    }
    return new Response(null, { status: 404 });
  }

  
  async send(email: string, firstName: string, env: Env): Promise<Response> {
    const resend = new Resend(env.RESEND_API); // env.RESEND_API should come from Worker B's environment
    
  }
}

await c.env.WORKER_EMAIL.fetch(
  new Request("https://worker-email/send", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ email, firstName }),
  })
);