Tilcon Connecticut, Inc. v. Commissioner of Environmental Protection
119 A.3d 1158
Conn.2015Background
- Tilcon operates five quarries in Connecticut and applied (in 2003) for five 25‑year water diversion permits to formalize existing withdrawals from on‑site wells and stormwater basins used in quarry operations (washing, dust suppression, cooling).
- The Department of Environmental Protection (DEP) sent an October 21, 2008 letter requesting extensive sitewide information, largely about Tilcon’s excavation/processing areas and long‑term plans (including wetlands inventories, erosion controls, and a wetlands mitigation plan for alleged post‑1990 wetland losses at North Branford).
- Tilcon refused to provide sitewide excavation plans, claiming DEP may only request information reasonably related (hydraulically) to the specific withdrawals sought (i.e., within each diversion’s area of influence); Tilcon supplied information limited to each withdrawal’s area of influence.
- DEP asserted broader authority under the Water Diversion Policy Act (Ch. 446k, §§ 22a‑365 et seq.) to require information about other site activities either because they themselves may be diversions or are effects of the proposed diversions; DEP also delayed action on Tilcon’s pending NPDES renewal pending diversion application information.
- Tilcon sought a declaratory ruling; the commissioner upheld DEP’s requests; the trial court affirmed in substance (with a remand for factual findings); the Connecticut Supreme Court reversed, holding DEP exceeded statutory authority in these contexts.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Scope of DEP information requests under Water Diversion Act | DEP may only request information about the specific diversion(s) applied for and their water‑resource effects (hydraulic "area of influence"). | The Act’s broad definitions let DEP require information about any activities that cause/alter waters or are effects of the diversion, including sitewide excavation. | Reversed: DEP may request information necessary to assess the specific proposed diversion(s) and their water‑resource effects, but may not use a diversion application to compel regulation/information about separate excavation activities that are neither the proposed diversion nor hydraulically necessary to evaluate it. |
| Treating excavation as diversion or as an "effect" of diversion | Excavation is not properly regulated via these diversion applications where excavations are hydraulically unrelated; information about excavations exceeds statutory "effects" scope. | Excavation is either itself a diversion or an effect of diverted water (facilitated by withdrawals), so DEP can require sitewide data. | Reversed: DEP cannot treat Tilcon’s excavation activities as separate diversions or as the sort of "effect" encompassed by §§ 22a‑369/22a‑373 absent a hydraulic nexus or other statutory basis. |
| Request for wetlands mitigation plan for activities authorized by prior municipal wetlands permits (North Branford) | DEP may not "reopen" or re‑regulate activities previously authorized by local wetlands permits via a diversion review when those wetlands impacts are not tied to the proposed diversion. | Water Diversion Act authorizes DEP to evaluate wetlands impacts of diversion activities and exercise overlapping jurisdiction; no explicit exemption forecloses this. | Reversed: DEP exceeded authority by demanding a wetlands mitigation plan tied to historic municipal permits where the wetlands alterations were not shown to be hydraulically or otherwise relevant to the proposed diversion review. |
| Authority to delay NPDES processing because of pending diversion application | NPDES completeness must be judged independently; DEP cannot delay processing a discharge permit due to a non‑discharge diversion application. | Reg. §22a‑430‑4(d)(3) allows DEP to delay processing a completed NPDES application if it is associated with another incomplete or deniable application. | Reversed: The regulation’s definition of "application" confines the delay authority to other discharge permit applications; DEP cannot delay an NPDES application solely due to a water diversion application. |
Key Cases Cited
- Celentano v. Rocque, 282 Conn. 645 (Conn. 2007) (administrative agencies must act within statutory authority)
- Unistar Properties, LLC v. Conservation & Inland Wetlands Commission, 293 Conn. 93 (Conn. 2009) (agency may require information to determine effects and need not accept applicant’s expert as conclusive)
- AvalonBay Communities, Inc. v. Inland Wetlands Commission, 266 Conn. 150 (Conn. 2003) (limits on agency jurisdiction over upland impacts when wetlands act lacks explicit grant)
- Sams v. Dept. of Environmental Protection, 308 Conn. 359 (Conn. 2013) (statutory construction and interplay of environmental statutes)
- Hartford v. Hartford Municipal Employees Assn., 259 Conn. 251 (Conn. 2001) (when agency interpretation is not time‑tested, courts apply plenary review)