STATEWIDE

Public Notice of Document Availability

Statewide - The New York State Department of Environmental Conservation (NYSDEC) is making available for public comment a Draft Addendum to the Division of Water Technical and Operational Guidance Series (TOGS) No. 1.1.1, entitled Ambient Water Quality Standards and Guidance Values and Groundwater Effluent Limitations. The primary purpose of this TOGS is to provide a compilation of these values for use in Department programs, including the SPDES permit program. The purpose of the Addendum is to add guidance values and groundwater effluent limitations for five substances, including methyl ter-butyl ether (MTBE). Guidance values are used by the Department in the absence of standards in regulation; they are authorized by regulation (6 NYCRR Part 702) and derived according to rigorous scientific procedures that are in regulation (6NYCRR Part 702). The guidance values being added are of the Health (Water Source) or H (WS) Type, derived to protect sources of potable water. The NYSDEC has worked closely with the New York State Department of Health (NYSDOH) in the derivation of these values. The NYSDOH is currently preparing the necessary regulatory documents to revise their drinking water standard (Maximum Contaminant Level or MCL) for MTBE as well. The Draft Addendum is shown in its entirety below. The Tables refer to tables of the same number in the existing June 1998 edition of TOGS 1.1.1, dated June 1998. Copies of the June 1998 edition of TOGS 1.1.1 are available on the Internet at http://www.dec.state.ny.us/website/dow/togs/togs111.pdf (408KB file, readable with Adobe Acrobat reader); paper copies of the June 1998 edition may be purchased for $15.50 from Michelle Tompkins, NYSDEC, 50 Wolf Road, Albany, NY 12233-3500, 518-457-7464. Each guidance value in the Draft Addendum is supported by a Fact Sheet that gives its scientific basis and derivation. Paper or electronic copies of these, at no cost, are available from Scott Stoner, 518-485-5824 or by email to sxstoner@gw.dec.state.ny.us.

Comments on the Draft Addendum must be received within 30 days from this publication date, and sent to: Scott Stoner, Standards and Special Studies Section, Division of Water, NYSDEC, 50 Wolf road, Albany, NY 12233-3502, or by email to sxstoner@gw.dec.state.ny.us.

DRAFT ADDENDUM TO JUNE 1998 DIVISION OF WATER TOGS 1.1.1



TABLE 1

NEW YORK STATE AMBIENT WATER QUALITY STANDARDS AND GUIDANCE VALUES

DRAFT November 1999

SUBSTANCE
(CAS No.)
WATER CLASSES STANDARD (ug/L) GUIDANCE VALUE (ug/L) TYPE BASIS CODE
Acetaldehyde
(75-07-0)
A, A-S, AA, AA-S
GA

8

8

H(WS)

H(WS)

A

n-Butanol
(71-36-3)
A, A-S, AA, AA-S
GA

50

50

H(WS)

H(WS)

Z

Carbon disulfide
(75-15-0)
A, A-S, AA, AA-S
GA

60

60

H(WS)

H(WS)

B

Formaldehyde
(50-00-0)
A, A-S, AA, AA-S
GA

8

8

H(WS)

H(WS)

A

Methyl tert-butyl ether (MTBE)
(1634-04-4)
A, A-S, AA, AA-S
GA

10

10

H(WS)

H(WS)

A

A





TABLE 5

NEW YORK STATE GROUNDWATER EFFLUENT LIMITATIONS (CLASS GA)

DRAFT November 1999

SUBSTANCE
(CAS No.)
MAXIMUM ALLOWABLE CONCENTRATION (ug/L) CATEGORY
Acetaldehyde
(75-07-0)
8 B
n-Butanol
(71-36-3)
50 B
Carbon disulfide
(75-15-0)
60 B
Formaldehyde
(50-00-0)
8 B
Methyl tert-butyl ether (MTBE)
(1634-04-4)
10 B




In addition, n-butanol, carbon disulfide, formaldehyde and methyl tert-butyl ether are deleted from Table 3 of TOGS 1.1.1.