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HomeMy WebLinkAbout14006 Classic Coffee Memo Stream 20130827Classic Coffee Decision of Memorandum Page 1 of 5 June 20, 2012 DECISION MEMORANDUM FROM: Carolyn Minnich TO: Will Service, Bruce Nicholson Subject: Stewart Creek Stream Sampling Data 1013 and 1024 Montana Drive Charlotte, Mecklenburg County Brownfields Project Number 14006-10-60 Stewart Creek runs through the above referenced brownfields site. The PD collected three samples on the brownfields property from the creek including sediment and surface water, upstream, mid stream, and downstream (US, SS, DS, respectively). Mecklenburg County Water Quality Program collected an additional seven surface water samples along the creek and two sediment samples in Stewart Creek. In addition, Mecklenburg County collected a sediment and surface water sample from Little Sugar Creek as a comparison of an urban creek, identified as MC29A1. In September 1974, Stewart Creek was classified a Class C Stream. Class C is defined as water protected for uses such as secondary recreation, fishing, wildlife, fish consumption, aquatic life including propagation, survival and maintenance of biological integrity, agriculture. Secondary recreation including wading, boating, and other uses involving human body contact with water where such activities take place in a infrequent, unorganized, or incidental manner. Surface water grab samples were analyzed for the following parameters: • Temperature (Field) • Dissolved Oxygen, DO (Field) • Conductivity (Field) • pH (Field) • Fecal Coliform Bacteria • E-Coli Bacteria • Enterococcus Bacteria • Ammonia Nitrogen • Nitrate + Nitrite • Total Kjeldahl Nitrogen • Total Phosphorus • Total Suspended Solids (TSS) • USGS Suspended Sediment Concentration (SSC) Test • Turbidity (Lab) Classic Coffee Decision of Memorandum Page 2 of 5 • Hardness • Biochemical Oxygen Demand • Chemical Oxygen Demand • Oil and Grease (HEM) • Volatile Organic Compounds (EPA Methods 8260) • Semi-Volatile Organic Compounds (EPA Method 8270) • Metals (antimony, arsenic, beryllium, cadmium, chromium (trivalent and hexavalent), copper, lead, manganese, mercury, nickel, selenium, silver, thallium, and zinc) Sediment soil samples were analyzed for the following parameters: • Volatile Organic Compounds (EPA Methods 8260) • Semi-Volatile Organic Compounds (EPA Method 8270) • Polycyclic Aromatic Hydrocarbons (PAH) • Metals (antimony, arsenic, beryllium, cadmium, chromium (trivalent and hexavalent), copper, lead, manganese, mercury, nickel, selenium, silver, thallium, and zinc) Analytical Data Surface water samples had no detections from volatile organic compounds or semi-volatile organic compounds above screening levels. The only metal detected was manganese and there is no standard for this parameter as a Class C water body. The following is a breakdown of the various parameters DO: non trout water not less that daily avg. 5.0 mg/L. with instantaneous reading less than 4.0 mg/L. Comment: field measurement within this range, Stewart 2 low DO. Fecal: not to exceed 400/100 ML in more than 20 % or samples. Comment: high values, discuss with county pH: 6.0-9.0 range Comment: 7.03-7.67 in Stewart Creek; Little Sugar Creek 7.62 Temperature: not to exceed 29 C for mountain and upper piedmont. Comment: below this, around 20 C, Turbidity: not to exceed 50 NTU Comment: 3.9-8.5 NTU in field, worst case downstream. See the excel table for each sample value for various parameters. Classic Coffee Decision of Memorandum Page 3 of 5 SURFACE WATER Surface water contaminants (in micrograms per liter, the equivalent of parts per billion), the unrestricted use standards for which are contained in Title 15A of the North Carolina Administrative Code, Subchapter 2B, Rule .0208 (_________ __, 201_ version): Surface Water Contaminant Sample Location Date of Sampling Concentration Exceeding Standard (µg/L) Standard (µg/L) Manganese Stewart 2 05/22/2012 400 NE Manganese Stewart 3 05/22/2012 73 NE Manganese Stewart 4 05/22/2012 94 NE Manganese Stewart 5 05/22/2012 47 NE Manganese Stewart 6 05/22/2012 48 NE Manganese Stewart 7 05/22/2012 59 NE Manganese Stewart 8 05/22/2012 74 NE Manganese Stewart DS 05/31/2012 37.2 NE Manganese Stewart SS 05/31/2012 41.0 NE Manganese Stewart US 05/31/2012 31.1 NE Manganese MC29A1 05/29/2012 31 NE NE-No established standard MC29A1 was collected at Little Sugar Creek. Classic Coffee Decision of Memorandum Page 4 of 5 STREAM SEDIMENT Soil Contaminant Sample Location Depth (ft) Date of Sampling Concentration Exceeding Screening Level1 (mg/kg) Site-Specific Protection of GW Screening Level2 Arsenic Stewart 7 Sediment 05/22/2012 1.5 5.8 Arsenic Stewart 8 Sediment 05/22/2012 1.3 5.8 Arsenic Sugar Creek Sediment 05/29/2012 0.90 5.8 Beryllium Stewart 7 Sediment 05/22/2012 0.40 63 Beryllium Stewart SS Sediment 05/31/2012 0.18 63 Trivalent Chromium Stewart 7 Sediment 05/22/2012 24 360,000 Trivalent Chromium Stewart 8 Sediment 05/22/2012 14 360,000 Trivalent Chromium Stewart DS Sediment 05/31/2012 15.8 360,000 Trivalent Chromium Stewart SS Sediment 05/31/2012 176 360,000 Trivalent Chromium Stewart US Sediment 05/31/2012 6.2 360,000 Trivalent Chromium Sugar Creek Sediment 05/29/2012 14 360,000 Copper Stewart 7 Sediment 05/22/2012 12 700 Copper Stewart 8 Sediment 05/22/2012 10 700 Copper Stewart SS Sediment 05/31/2012 27.5 700 Copper Stewart US Sediment 05/31/2012 9.0 700 Lead Stewart 7 Sediment 05/22/2012 6.1 270 Lead Stewart 8 Sediment 05/22/2012 3.5 270 Lead Stewart DS Sediment 05/31/2012 2.0 270 Lead Stewart SS Sediment 05/31/2012 2.8 270 Lead Stewart US Sediment 05/31/2012 1.8 270 Lead Sugar Creek Sediment 05/29/2012 11 270 Manganese Stewart 7 Sediment 05/22/2012 480 65 Manganese Stewart 8 Sediment 05/22/2012 520 65 Manganese Stewart DS Sediment 05/31/2012 112 65 Classic Coffee Decision of Memorandum Page 5 of 5 Manganese Stewart SS Sediment 05/31/2012 232 65 Manganese Stewart US Sediment 05/31/2012 159 65 Manganese Sugar Creek Sediment 05/29/2012 250 65 Mercury Stewart DS Sediment 05/31/2012 0.031 1.0 Nickel Stewart 7 Sediment 05/22/2012 4.4 130 Nickel Stewart DS Sediment 05/31/2012 1.3 130 Nickel Stewart SS Sediment 05/31/2012 56.9 130 Nickel Stewart US Sediment 05/31/2012 4.6 130 Nickel Sugar Creek Sediment 05/29/2012 5.9 130 Selenium Stewart 8 Sediment 05/22/2012 0.64 2.1 Thallium Stewart 8 Sediment 05/22/2012 0.65 0.28 Zinc Stewart 7 Sediment 05/22/2012 30 1200 Zinc Stewart 8 Sediment 05/22/2012 36 1200 Zinc Stewart DS Sediment 05/31/2012 19.8 1200 Zinc Stewart SS Sediment 05/31/2012 36.4 1200 Zinc Stewart US Sediment 05/31/2012 25.7 1200 Zinc Sugar Creek Sediment 05/29/2012 36 1200 Zinc Stewart US Sediment 05/31/2012 25.7 1200 Notes: 1. Bold values exceed screening levels for Protection of Groundwater. 2. Sediment samples had low levels of Polynuclear Aromatic Hydrocarbons (PAHs) detected. They were below the Protection of Groundwater PSRG for the IHSB. Conclusion Stewart Creek is an urban creek in Mecklenburg County with fair water quality. Based on the sampling event, the brownfields property is not impacting the creek with chlorinated solvents that have been detected on the brownfields property. At this time, no additional sampling is required in the creek. 15A NCAC 028 .0211 FRJ!SHSURFACEWAnR QUALDYSTANDARDS FUR CLASS C WATmS General The water quality standards for all fresh surface waters are the basic standards applicable toOtss CWdIl2S. See Rule .02080fthis Section for standards for toxic substances and temperature. Additional and more stringent standards applicable to other specific freshwater classifications are specified in Rules .0212, .0214, .0215, .0216, .0217, .0218, .0219, .0223, .0224 and .0225 ofthis Section. (I) Best Usage of Waters: aquatic life propagation and maintenance ofbiological integrity (including fishing and fish), wildlife, secondary recreation, agriculture and any other usage except for primary recreation or as a source ofwater supply for drinking, culinary or food processing purposes; (2) Conditions Related to Best Usage: the waters shall be suitable for aquatic life propagation and maintenance ofbiological integrity, wildlife, secondary recreation, and agriculture. Sources ofwateJ" pollution which preclude any of these uses on either a short-term or long-term basis shall be considered to be violating a water quality standard; (3) Quality standards applicable to all fresh surface waters: (a) Chlorophyll a (corrected): not greater than 40 ugll for lakes, reservoirs, and other waters subject to growths ofmacroscopic or microscopic vegetation not designated as troutwat.els, and not greater than 15 ugll for lakes, reservoirs, and other waters subject to growths of macroscopic or microscopic vegetation designated as trout waters (not applicable to Bkes or reservoirs less than 10 acres in surface area). The Commission or its designeerreyprohNor limit any discharge ofwaste into surface waters if, in the opinion ofthe Director, the surface waters experience or the discharge would result in growths ofmicroscopic or macroscopic vegetation such that the standards established pursuant to this Rule would bevnlatOOorthe intended best usage ofthe waters would be impaired; (b) Dissolved oxygen: not less than 6.0 mg/I for trout waters; for non-trout waters,not less thana daily averege of5.0 mg/I with a minimum instantaneous value ofnot less than4.orrgll;sv"mlJ waters, lake coves or backwaters, and lake bottom waters may have lower values jfcaused by natural conditions; (c) Floating solids, settleable solids, or sludge deposits: only such amounts attributable to sewage, industrial wastes or other wastes as shall not make the water unsafe orunsuiablefur aquatic life and wildlife or impair the waters for any designated uses; (d) Gases, total dissolved: not greater than IIO percent ofsaturation; (e) Organisms of the coliform group: fecal coliforms shall not exceed a geometric mean of 200/l00ml (MF count) based upon at least five consecutive samples examined duringany 30 day period, nor exceed 400/100ml in more than 20 percentofthe samples examined during such period. Violations ofthe fecal colifonn standard are e}(Jjected during rainfalleventsaod, in some cases, this violation is expected to be caused by uncontrollable nonpoint source pollution. All coliform concentrations are to be analyzed using the membrane filterteehnque unless high turbidity or other adverse conditions necessitate the tube dilution method; in case ofcontroversy over results, the MPN 5-tube dilution technique shall be used as the reference method; (f) Oils, deleterious substances, colored or other wastes: only such amounts as shall notrender the waters injurious to public health, secondary recreation or to aquatic life and wildlife or adversely affect the palatability of fish, aesthetic quality or impair the waters for any designated uses. For the purpose ofimplementing this Rule, oils, deleterious substances, colored or other wastes shall include but not be limited to substances that cause a film or sheen upon ordiscoloration ofthe surface ofthewateror adjoining shorelinespUlSumtto40 CFR IlO.3(a)-(b) which are hereby incorporated by reference including any subsequent amendments and additions. This material is available for inspection at the Department of Environment and Naturel Resources, Division ofWater Quality, 512 North Salis bury Street, Raleigh, North Carolina. Copies may be 0 btained from the Superintendent of1h:uIlmts,U.s. G>vemment Printing Office, Washington, D.C. 20402-9325 at a cost offorty-five dolIars ($45.00); (g) pH: shall be normal for the waters in the area, which generally shall range between 6.Oand 9.0 except that swamp waters may have a pH as low as 4.3 ifit is the result ofnatural condiims; (h) Phenolic compounds: only such levels as shall not result in fish-flesh tainting or impaim::nt ofother best usage; (i) Radioactive substances: (i) Combined radium-226 and radium-228: the maximum average annual activity level (based on at least four samples collected quarterly) for combined radium-226 and radium-228 shall not exceed five picoCuries per liter; (ii) Alpha Emitters: the average annual gross alpha particle activity (including radium-226, but excluding radon and uranium) shall not exceed 15 picoCuries per liter; (iii) Beta Emitters: the maximum average annual activity level (based on at least four samples, collected quarterly) for strontium-90 shall not exceed eight picoCuries per liter; nor shall the average annual gross beta particle activity (excluding potassium-40 and other naturally occurring radio-nuclides) exceed 50 pi:oQuies pet liter; nor shall the maximum average annual activity level for tritium exceed 20,000 picoCuries per liter; (j) Temperature: not to exceed 2.8 degrees C (5.04 degrees F) above the natural water temperature, and in no case to exceed 29 degrees C (84.2 degrees F) for mountain and tIpPO" piedmont waters and 32 degrees C (89.6 degrees F) for lower piedmont and coastal plain Waters; the temperature for trout waters shall not be increased by more than 0.5 degrees C (0.9 degrees F) due to the discharge ofheated liquids, but in no case to exceed 20 degrees C ' (68 degrees F); (k) Turbidity: the turbidity in the receiving water shall not exceed 50 Nephelometric Turbidity Units (NTU) in streams not designated as trout waters and 10 NTU in streams, lakes or reservoirs designated as trout waters; for lakes and reservoirs not designated as troutW<ltels, the turbidity shall not exceed 25 NTU; if turbidity exceeds these levels due to natural background conditions, the existing turbidity level shall not be increased. Compliance wfh this turbidity standard can be met when land management activities employ Best Management Practices (BMPs)[as defined by Rule .0202 ofthis Section]recomrended by the Designated Nonpoint Source Agency [as defined by Rule .0202 of this Section]. ~ITlISt be in full compliance with all specifications governing the proper design, installation, operation and maintenance ofsuch BMPs; (I) Toxic substances: numerical water quality standards (maximumpennissible levels) for the protection of human health applicable to all fresh surface waters are in Rule .0208 ofthis Section. Numerical water quality standards (maximum pennissible levels) to protect aquafu life applicable to all fresh surface waters: (i) Arsenic: 50 ug/l; (ii) Beryllium: 6.5 ug/I; (iii) Cadmium: 0.4 ug/l for trout waters and 2.0 ug/l for non-trout waters; attainment of these water quality standards in surface waters shall be based on measurement of total recoverable metals concentrations unless appropriate studies have been conducted to translate total recoverable metals to a toxic form. Studies used to determine the toxic form or translators must be designed according to the "Water Quality Standards Handbook Second Edition" published by the Environmental Protection Agency (EPA 823-B-94-005a) or "The Metals Translator: G1idance For Calculating a Total Recoverable Permit Limit From a Dissolved Criterion" pubfuhed by the Environmental Protection Agency (EPA 823-B-96-007) which are hereby incorporated by reference including any subsequent amendments. The Director shall consider conformance to EPA guidance as well as the presence of environmental conditions that limit the applicability oftranslators in approvingthe use ofmetal translators; (iv) Chlorine, total residual: 17 ug/I; (v) Chromium, total recoverable: 50 ug/l; (vi) Cyanide, 5.0 ug/I, unless site-specific criteria are developed based upontheaquali:: life at the site utilizing The Recalculation Procedure in Appendix B ofAppendixLil the Environmental Protection Agency's Water Quality Standards Handbookhereby incorporated by reference including any subsequent amendments; (vii) Fluorides: 1.8 mg/I; (viii) Lead, total recoverable: 25 ug/~ collection ofdata on sources,transport andfuteof lead shall be required as part of the toxicity reduction evaluation for dischargers who are out ofcompliance with whole effluent toxicity testing requirements and the concentration of lead in the effluent is concomitantly determined to exceed an instream level on.! ug/I from the discharge; (ix) Mercury: 0.012 ug/l; (x) Nickel: 88 ug/I, attainment ofthese water quality standards in surface waters shaD be based on measurement of total recoverable metals concentrations unless appropriate studies have been conducted to translate total recoverable metals loa toxic fonn. Studies used to detennine the toxic form or translators mustbedes{?,ned according to the "Water Quality Standards Handbook Second Edition" published by the Environmental Protection Agency (EPA 823-B-94-005a) or "The Metals Translator: Guidance For Calculating a Total Recoverable Permit Limit From a Dissolved Criterion" published by the Environmental Protection Agency (EPA 823­ B-96-·oo7) which are hereby incorporated by reference including any subseq uent amendments. The Director shall consider conformance to EPA guidance as wellas the presence ofenvironmental conditions that limit the applicability oftmnsbtors i1 approving the use ofmetal translators; (xi) Pesticides: (A) Aldrin: 0.002 ug/l; (B) Chlordane: 0.004 ug/l; (C) DDT: 0.001 ug/l; (0) Demeton: 0.1 ug/I; (E) Dieldrin: 0.002 ug/l; (F) Endosulfan: 0.05 ug/I; (G) Endrin: 0.002 ug/I; (H) GIthion: 0.01 ug/l; (I) Heptachlor: 0.004 ug/I; (J) Lindane: O.oI ug/I; (K) Methoxychlor: 0.03 ug/I; (L) Mirex: 0.001 ug/~ (M) Parathion: 0.013 ug/~ (N) Toxaphene: 0.0002 ug/l; (xii) Polychlorinated biphenyls: (total ofall PCBs and congeners identified) 0.001 ug/l; (xin) Selenium: 5 ug/I; (xiv) Toluene: 11 ug/I or 0.36 ug/I in trout waters; (xv) Trialkyltin compounds: 0.07 ug/I expressed as tributyltin; (4) Action Levels for Toxic Substances: (a) Copper: 7 ug/l; (b) Iron: 1.0mg/l; (c) Silver: 0.06 ug/I; (d) Zinc: 50 ug/I; (e) Chloride: 230 mg/I; Ifthe Action Levels for any ofthe substances listed in this Subparagraph (which are generally not bioaccumulative and have variable toxicity to aquatic life because ofchemical form, solubility, stream characteristics or associated waste characteristics) are determined by the waste load allocation to be exceeded in a receiving water by a discharge under the specified low flow criterion forloxicsubstanees (Rule .0206 in this Section), the discharger shall monitor the chemical or biological effects ofthe discharge; efforts shall be made by all dischargers to reduce or eliminate these substances from tiler effluents. Those substances for which Action Levels are listed in this Subparagraph shaJlbeliliedlfi appropriate in the NPDES permit based on the Action Levels listed in this Subparagraph ifsufficient information (to be detenuined for metals by measurements ofthat portion ofthe dissolved instream concentration of the Action Level parameter attributable to a specific NPDES permitted discharge) exists to indicate that any ofthose substances may be a causative factor resulting in toxicity ofthe effluent. NPDES pennit limits may be based on translation ofthe toxic fonu to total recovembk:m:taE. Studies used to detenuine the toxic fonu or translators must be designed according to " WaterQmlity Standards Handbook Second Edition" published by the Environmental ProtectionAgency (EPA 823-B­ 94-005a) or "The Metals Translator: OJidance For Calculating a Total Recoverable Permit LiTiFroma Dissolved Criterion" published by the Environmental Protection Agency (EPA 823-B-%OO7)whi:hare hereby incorPorated by reference including any subsequent amendments. The Director shallconsi:ler conformance to EPA guidance as weU as the presence of environmental conditions that limit the applicability oftranslators in approving the use ofmetal translators. Forpurposes otherthan consideration ofNPDES permitting ofpoint source discharges as descrhedil this Subparagraph, the Action Levels in this Rule, as measured by an appropriate analytical rechni:jue, per 15A NCAC 02B .0103(a), shall be considered as numerical ambient water quality standards. History Note: AuthorityG.S. 143-214.1; 143-215.3(a)(1); Eff February 1, 1976; Amended Eff May 1, 2007; April 1, 2003; August 1, 2000; October 1,1995; August 1, 1995;ApriI1, 1994; February 1, 1993.