AIR, WATER & WASTE PERMITTING

Under the Clean Water Act, all discharges of waste to the waters of the US require an NPDES permit. Caltha has permitted all sizes of municipal discharges, industrial discharges, cooling water discharges.

To meet Federal Categorical Effluent Guidelines, State rules, and local pretreatment regulations, many types of wastewater discharges to publicly owned treatment works (POTW) require a pretreatment permit. Caltha staff have permitted a wide range of indirect discharges.Recently, the potential for soil vapor intrusion has become an important issue. Caltha conducts a Tier I Vapor Encroachment Screening Assessment (ASTM Standard E2600-10) with every Phase 1 ESA. If the potential for vapor encroachment can not be ruled out during the Phase 1, Caltha can conduct soil vapor testing during the Phase 2 investigation.

Caltha staff have been working with stormwater permitting and development of stormwater discharge permit compliance programs and SWPPP since the first stormwater rules were drafted in the 1980s. Caltha’s expertise and technical skills have resulted in cost savings for clients across the US. For detailed information on Caltha’s stormwater services, go to Caltha Storm Water Permitting and Compliance page.

Caltha provides special expertise in RCRA permitting and in permitting of hazardous waste treatment, storage and disposal facilities (TSDF). Caltha’s staff have managed TSDFs in the past and understand the unique requirements of this sector. Caltha also provides technical support to small quantity generators (SQG) and large quantity generators (LQG) to comply with RCRA and State hazardous waste management rules.

Rules on above and underground storage tanks are complex and vary widely between States and local jurisdictions. Regulated tanks may require permits, registration or notification prior to installation. In some cases, adding new tanks or modifying existing ones can change a facility’s requirements under 40 CFR 112 (“SPCC Rule”), especially if the facility exceeds the threshold for SPCC compliance. Caltha provides expert consulting on Federal, State and local tank regulations and permitting, and can prepare Spill Prevention, Control and Countermeasure (SPCC) plans to comply with the SPCC Rule, and State spill prevention plan requirements.