File 5 SPDES PermitEq1 30 003B 2026 01 13 Nav GM38 DryWells SPDES.pdf

NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION

Division of Environmental Remediation

625 Broadway, Albany, New York 12233 www.dec.ny.gov

Naval Weapons Industrial Reserve Plant GM38 Project Site Remediation

Wastewater Discharge SPDES Permit Equivalent

DRAINAGE BASIN: 17 DER Site No:

Effective Date:

Expiration Date:

Modification Date(s):

1-30-003B September 1, 2017 August 31, 2027 January 28, 2025 February 18, 2025 January 12, 2026

Discharger Name and Address:

Department of the Navy ATTN: Bryan Revell Contact Address: 9324 Virginia Avenue, Norfolk, VA 23511 Contact Phone #: (757) 341-2008 Contact Email Address: bryan.c.revell.civ@us.navy.mil is authorized to discharge from the facility described below:

Naval Weapons Industrial Reserve Plant GM38 102 Broadway, Bethpage, NY 11714

From the following outfall(s):

Outfall # Outfall

Description Location

Receiving Water

WIN * Class

001 (Arthur Avenue Basin)

Treated Remediation Wastewater

40° 43' 54" N 73° 28' 44" W

Groundwater N/A GA

002 (Dry Wells)

Treated Remediation Wastewater

40° 43’ 55” N 73° 28’ 35” W

Groundwater N/A GA

* Water Index Number http://www.dec.ny.gov/ mailto:bryan.c.revell.civ@us.navy.mil

Site Name: Naval Weapons Industrial Reserve Plant GM38 DER Site ID#: 1-30-003B Page 2 of 5 v1.4

EFFLUENT LIMITATIONS & MONITORING REQUIREMENTS

OUTFALL DISCHARGE TYPE

LATITUDE/

LONGITUDE

RECEIVING WATER

and CLASS

EFFECTIVE EXPIRING

Treated

Remediation Wastewater

40° 43' 54" N 73° 28' 44" W

Groundwater, Class

GA

1/12/2026 8/31/2027

Treated

Remediation Wastewater

40° 43’ 55” N 73° 28’ 35” W

Groundwater, Class

GA

1/12/2026 8/31/2027

The discharges from the treatment facility shall be limited and monitored by the operator as specified below:

Outfall and Parameters

CAS No.

Monthly

Avg.

Limits

Daily Max

Limits Units

Minimum Monitoring Requirements

FN

Outfall 001 Measurement

Frequency Sample

Type

Flow NA Monitor 1,400 GPM Continuous Recorder pH NA 4.0 – 8.5 SU Monthly Grab

1,1-Dichloroethane 00075-34-3 Monitor 5 μg/L Monthly Grab

1,2-Dichloroethane 00107-06-2 Monitor 0.6 μg/L Monthly Grab

1,1-Dichloroethene 00075-35-4 Monitor 5 μg/L Monthly Grab cis-1,2-Dichloroethene 00156-59-2 Monitor 5 μg/L Monthly Grab trans-1,2- Dichloroethene

00156-60-5 Monitor 5 μg/L Monthly Grab

Tetrachloroethene 00127-18-4 Monitor 5 μg/L Monthly Grab

1,1,1-Trichloroethane 00071-55-6 Monitor 5 μg/L Monthly Grab

Trichloroethene 00079-01-6 Monitor 5 μg/L Monthly Grab

Trichlorotrifluoroethane (Freon 113)

00076-13-1 Monitor 5 μg/L Monthly Grab

1,1,2-Trichloroethane 00079-00-5 Monitor 1 μg/L Monthly Grab

1,4-Dioxane 00123-91-1 Monitor 0.35 μg/L Monthly Grab 1

Bis(2-ethylhexyl) phthalate

00117-81-7 Monitor Monitor μg/L Monthly Grab 3

Carbon Tetrachloride 00056-23-5 Monitor 5 μg/L Monthly Grab

Chloroform 00067-66-3 Monitor 7 μg/L Monthly Grab

Mercury, Total 07439-97-6 Monitor 0.25 μg/L Monthly Grab 2

Vinyl Chloride 00075-01-4 Monitor 2 μg/L Monthly Grab

Footnotes:

1. Mercury shall be analyzed using USEPA Method 1631.

2. 1,4-Dioxane

a. Sampling for 1,4-Dioxane shall use EPA method 8270 SIM or other method specified by DER.

3. The site discharger shall monitor the influent (RW1, RW4, and RE137 individually) and effluent (GM38 Groundwater Treatment Plant) monthly for six months for Bis(2-

Page 3 of 5 v1.4 ethylhexyl) Phthalate. If exceedances of the compliance level of 7.5 μg/L are identified, the site discharger shall perform a trackdown of Bis(2-ethylhexyl) Phthalate and provide the results to the Division of Environmental Remediation project manager as well as the Regional Water Engineer/Manager for Region 1.

Additional Conditions:

1. Discharge is not authorized until such time as an engineering submission showing the method of treatment is approved by the Department. The discharge rate may not exceed the effective or design treatment system capacity. All monitoring data, engineering submissions and modification requests must be submitted to:

Kristin Granzen Division of Environmental Remediation NYSDEC, 625 Broadway, Albany, New York 12233- 7015, Tel: 518-402-9772 Email: kristin.granzen@dec.ny.gov

With a copy sent to:

Regional Water Engineer/Manager, Region 1 50 Circle Road, Stony Brook, New York, 11790-3409 Phone: (631) 444-0405 Email: jennifer.pilewski@dec.ny.gov

2. Samples and measurements, to comply with the monitoring requirements specified above, must be taken from the effluent side of the final treatment unit prior to discharge to the receiving water body unless otherwise noted above.

3. Monitoring and analysis shall be conducted using sufficiently sensitive test procedures approved under 40 CFR Part 136 unless other test procedures have been specified in this permit.

4. Only site generated wastewater is authorized for treatment and discharge.

5. Authorization to discharge is valid only for the period noted above but may be renewed if appropriate. A request for renewal must be received 6 months prior to the expiration date to allow for a review of monitoring data and reassessment of monitoring requirements.

6. Both concentration (mg/l or μg/l) and mass loadings (lbs/day) must be reported to the Department for all parameters except flow and pH.

7. Any use of corrosion/scale inhibitors, biocidal-type compounds, or other water treatment chemicals used in the treatment process must be approved by the department prior to use.

8. This discharge and administration of this discharge must comply with the substantive requirements of 6NYCRR Part 750.

mailto:kristin.granzen@dec.ny.gov mailto:jennifer.pilewski@dec.ny.gov

Page 4 of 5 v1.4

MONITORING LOCATIONS (existing treatment system)

Page 5 of 5 v1.4

MONITORING LOCATIONS (new treatment system)