From: "Tipton, Lantz" <lantz.tipton@dnr.mo.gov>

To: "'Elizabeth Sabol'" <Elizabeth.Sabol@erg.com>

CC: "swietlik.william@epa.gov" <swietlik.william@epa.g ov>, Eleanor Codding <Eleanor.Codding@erg.com>, "Wi lson, Judy" <judy.wilson@dnr.mo.gov>

Date: 6/30/2010 10:46 AM Subject: RE: DMRs Clarification Needed for Onyx Maple Hill Landfill

Attachments: Onyx - Sept 2008 DMR.pdf

Ms. Sabol,

After reviewing the data it, there is an error in h ow the data was entered in the system. The informa tion was transferred from Missouri's old WQIS to the new MoCWIS system and the data from the permit requires micrograms per liter (ug/L) howeve r the data in MoCWIS is listed as milligrams per liter (mg/L). It appears that when this information was transferred it was entered in the ug/L value instead of converting it to mg/L format. Below is a breakdown of the data that was submitted by the facility.

Outfall #001:

Flow 0.144 MGD Magnesium 7.22 mg/L Manganese 0.116 mg/L

Outfall #002:

Flow 0.0864 MGD Manganese 0.429 mg/L Magnesium 12 mg/L Fluoride 0.4 mg/L

Boron, Total Recoverable was also entered as 86.9 m g/L and should have been entered as 0.0869 mg/L.

I have went in and corrected the data to accurately reflect the digits in the mg/L value. Also I have attached a copy of the facility's submitted Discharge Monitoring Report.

If you have any additional questions, please let me know.

Thank you

Lantz Tipton Environmental Specialist Missouri Department of Natural Resources Northeast Regional Office Telephone: (660) 385-8000 Fax: (660) 385-8090 lantz.tipton@dnr.mo.gov

________________________________ From: Elizabeth Sabol [mailto:Elizabeth.Sabol@erg.c om] Sent: Tuesday, June 29, 2010 8:11 AM To: Tipton, Lantz Cc: swietlik.william@epa.gov; Eleanor Codding Subject: DMRs Clarification Needed for Onyx Maple H ill Landfill

Dear Mr. Tipton,

Thank you for your time on the phone yesterday. Ea stern Research Group, Inc. (ERG) under EPA Contract No. 68-C-02-095 is e-mailing you on EPA's behalf to request clarification of 2008 di scharge monitoring reports for the Onyx Maple Hill Landfill in Macon, MO (MO0117471). Here is some background on what the information is used for.

EPA reviews publicly-available DMR data to fulfill its review obligation under Section 304(b) of the C lean Water Act. The CWA requires EPA to annually review and, if appropriate, revise its water pollution control technology-based regulation s, called "effluent limitations guidelines" or "effluent guidelines," that limit the discharge of pollutants to waters of the U.S. from various categ ories of industrial facilities. EPA is currently conducting its 2010 annual review of existing efflu ent guidelines and potential industrial guidelines which may need to be included (see http://www.epa.gov/guide/304m/ for further informat ion). EPA will discuss this review and the results in its 2010 Effluent Guidelines Program Plan scheduled for publication in the Federal Regis ter in December 2010. As part of the 2010 annual re view, EPA is evaluating the data in discharge monitoring reports from 2008 and needs fu rther information to complete the review.

We would like to obtain additional information on t he following concentration data for manganese, magn esium, and fluoride discharges from your facility. Our records show the following conce ntrations were discharged:

Outfall 001:Manganese (Sept 2008): 116 mg/L

Magnesium (Sept 2008): 7220 mg/L Average Reported Flow: 0.0864 MGD

Outfall 004:

Manganese (Sept 2008): 429 mg/L Magnesium (Sept 2008): 12000 mg/L Fluoride (Sept 2008): 400 mg/L Average Reported Flow: 0.144 MGD

We appreciate your help in confirming if the above data are accurate, or if there are units errors in the DMR data, as we expect.

If you have any questions regarding this request, p lease call me at (703) 633-1659. If you would like to speak directly with EPA regarding this request, you can contact William F. Swietlik of EPA 's Office of Water/Engineering Analysis Division by phone at (202) 566-1129 or by email: swietlik.william@epa.gov<mailto:swietlik.william@ep a.gov>.

Thanks,

Elizabeth

Elizabeth A. Sabol Environmental Engineer Eastern Research Group, Inc. 14555 Avion Parkway, Suite 200 Chantilly, VA 20151 elizabeth.sabol@erg.com<mailto:elizabeth.sabol@erg. com> Phone:703-633-1659