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HomeMy WebLinkAbout20060645 Ver 2_Monitoring Report_20190603DUKE ENERGY May 29, 2019 Ms. Sue Homewood State of North Carolina Department of Environmental Quality Winston-Salem Regional Office 450 W. Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 Enviro Reee tal Qua'ii,Y r id v J.C,.:e�. 1;�jinston-S31 el Subject: Duke Energy Carolinas, LLC. (Duke Energy) Belews Creek Steam Station — Craig Road Landfill 401 Water Quality Certification Monitoring Dear Ms. Homewood: In-oca4S '12 - DUKE Z Belews Creek Steam Station Duke Energy Carolinas 3195 Pine Hall Road Belews Creek, NC 27009 Duke Energy is submitting the Water Quality monitoring report as required by Special Condition of Certification #9, of Water Quality Certification Number 3879 for impacts evaluation at the Craig Road Landfill Phase II Expansion project. The report includes monitoring for streams SC -8 and SC -10. No other streams that are required for monitoring have been impacted by construction at this time. Should you have any questions regarding this report, please contact Joyce Dishmon at 336-623- 0238 or Joyce.Dishmon@duke-energy.com. Sincerely, eginald D. Anderson General Manager III, Regulated Stations Belews Creek Steam Station Power Generating Carolinas East Attachments Environmental Quality Received Inventory: U a 20 1. Benthic macroinvertebrate lab sheets (one for each location), 2. Habitat assessment field data sheets (one for each location),{`r VY -M.: 3. Site photographs of SC8 and SC10, ` ,n C =? Summary and comparison of assessments in August 2018 and March 2019: Auzust The habitat assessments of two streams (SC8 and SC 10) in the vicinity of Belews Creek Steam Station (BCSS) Landfill were completed August 18, 2018. The overall assessment score for habitat at SC8 was 33 and SC 10 scored 29. Observations of visible land use indicated that forest made up 10% and coal ash landfill was 90%. The sample from SC8 contained four (4) macroinvertebrate taxa. Chironomus sp was the only taxa listed as abundant, while the three remaining taxa were rare. In the SC 10 sample there were 11 macroinvertebrate taxa identified. Only one of those taxa, Chimarra aterrima, was listed as abundant; while Parametriocnemus sp. and Tipula sp. were common taxa. The remaining nine taxa were classified as rare. March Habitat assessment results on March 19, 2019 for both SC8 and SC 10 were identical to the August results, with the exception that there was a higher observed flow in the channel at SC 10. Ten (10) macroinvertebrate taxa were identified from SC8; Parametriovnemus sp. was the only taxa listed as common. The other six taxa were listed as rare. Fourteen (14) macroinvertebrate taxa were identified from SC 10 in March of 2019. There were three abundant taxa: Parametriocnemus sp., Cricotopus sp., and Chimarra aterrima. As well as three taxa identified as common: Eukiefferiella claripennis gp, Diamesa sp., and Diplectrona modesta. Eight of the remaining taxa found were rare. Notably in the SC 10 sample, there was one Maccaffertium sp. found, but could only be identified to genus. Results The August and March results were extremely similar in species composition, and had an identical Biotic Index (BI) value of 4.65 and a "good" bioclassification, according to the NC Benthic Index of Biotic Integrity. In the sample from August 2018, there were few individuals found, which is consistent with the majority of sampling events prior to 2018. The lack of diverse individuals lead to a bioclassification of "poor" with a Biotic index (BI) value of 9.25. This was similar to the March sample, apart from one Maccaffertium sp., which also had a bioclassification of "poor", and a lower BI value of 7.38. BENTHIC MACROINVERTEBRATE LAB SHEET Water Body SC8 Road/County Craig Rd. /Stokes Countv Type Sample sweep net & visual Collection Card No N/A Date Collected 08/18/2018 & 03/19/2019 Collectors/Analyst A.Winn, R. FawcettJ.Stahl SCS March 2019 A,C,R August 2018 A,C,R E hemero tera Chironomidae Macca ertium s. —R(l) Chironomus s. A(34) Goeldichironomus holo rasinus R 1 Chironomidae Parametriocnemus s . C(3) Mollusca Ph sella s . R 1 Mollusca Pisidium s . C(6) Coleoptera Ph sellas . A(12) H dro hilidae R(l) Ferrissia rivularis R(l) Pseudosuccinea columella R(l) Misc Diptera Ti ula s . R(l) Cerato 0 onidae R(l) Other Atractides s . R(l) C clo oida R(2) Total Taxa 10 4 Total EPT 1 0 Biotic Index 9.25 7.38 Bioclassification Poor Poor Habitat Assessment Field Data Sheet Mountain/ Piedmont Streams Biological Assessment Unit, DWQ TOTAL SCORE 33 Directions for use: The observer is to survey a minimum of 100 meters with 200 meters preferred of stream, preferably in an upstream direction starting above the bridge pool and the road right-of-way. The segment which is assessed should represent average stream conditions. To perform a proper habitat evaluation the observer needs to get into the stream. To complete the form, select the description which best fits the observed habitats and then circle the score. If the observed habitat falls in between two descriptions, select an intermediate score. A final habitat score is determined by adding the results from the different metrics. Stream SC8 Location/road: Belews Ck. Landfill(Road Name Craig Rd.)County Stokes Date_ 08/18/2018 & 3/19/2019 CC# Basin Dan River Subbasin Observer(s) A.Winn Type of Study: ❑Fish ®Benthos ❑Basinwide ®Special Study (Describe) 06-0645yer2 Latitude 36.26895 Longitude -80.07179 Ecoregion: ❑MT ®P [:]SlateBelt []TriassicBasin Water Quality: Temperature N/A C DO N/A mg/l Conductivity (corr.) N/A µS/cm pH N/A Physical Characterization: Visible land use refers to immediate area that you can see from sampling location - include what you estimate driving thru the watershed in watershed land use. Visible Land Use: 10 %Forest %Residential %Active Pasture %Active Crops %Fallow Fields %Commercial 90 %Industrial %Other Describe: coal ash landfill Watershed land use : ®Forest ❑Agriculture ❑Urban ❑Animal operations upstream Width: (meters) Stream 0.15 Channel (at top of bank) Stream Depth: (m) Avg 0.01 Max 0.02 ® Width variable ❑ Large river >25m wide Bank Height (from deepest part of riffle to top of bank -first flat surface you stand on): (m) N/A Bank Angle: 45° or ❑ NA (Vertical is 90°, horizontal is 0°. Angles > 90° indicate slope is towards mid -channel, < 900 indicate slope is away from channel. NA if bank is too low for bank angle to matter.) ❑Channelized Ditch []Deeply incised -steep, straight banks ❑Both banks undercut at bend ❑Channel filled in with sediment ❑Recent overbank deposits ❑Bar development ❑Buried structures ®Exposed bedrock ❑Excessive periphyton growth ❑ Heavy filamentous algae growth❑Green tinge ❑ Sewage smell Manmade Stabilization: ❑N ®Y: ®Rip -rap, cement, gabions ®Sediment/grade-control structure ®Berm/levee Flow conditions: ❑High ❑Normal ®Low Turbidity: ❑Clear ®Slightly Turbid ❑Turbid ❑Tannic []Milky ❑Colored (from dyes) Good potential for Wetlands Restoration Project?? []YES ®NO Details landfill site Channel Flow Status Useful especially under abnormal or low flow conditions. A. Water reaches base of both lower banks, minimal channel substrate exposed ❑ B. Water fills >75% of available channel, or <25% of channel substrate is exposed ❑ C. Water fills 25-75% of available channel, many logs/snags exposed ❑ D. Root mats out of water ❑ E. Very little water in channel, mostly present as standing pools ED Weather Conditions: Partly Cloudy Mid 80s Photos: ❑N ®Y ® Digital ❑35mm Remarks: Very little habitat available, some flow. Little to no woody debris and some rocks in stream channel for macroinvertebrate habitat I. Channel Modification Score A. channel natural, frequent bends 5 B. channel natural, infrequent bends (channelization could be old) 4 C. some channelization present O D. more extensive channelization, >40% of stream disrupted 2 E. no bends, completely channelized or rip rapped or gabioned, etc. 0 ❑Evidence of dredging ❑Evidence of desnagging=no large woody debris in stream ❑Banks of uniform shape/height Remarks Subtotal 3 Il. Instream Habitat: Consider the percentage of the reach that is favorable for benthos colonization or fish cover. If >70% of the reach is rocks, 1 type is present, circle the score of 17. Definition: leafpacks consist of older leaves that are packed together and have begun to decay (not piles of leaves in pool areas). Mark as Rare. Common. or Abundant. Rocks Macrophytes C Sticks and leafpacks Snags and logs C Undercut banks or root mats AMOUNT OF REACH FAVORABLE FOR COLONIZATION OR COVER >70% 40-70% 20-40% <20% Score Score Score Score 4 or 5 types present 20 16 12 8 3 types present 19 15 11 7 2 types present 18 141D 6 1 type present 17 13 9 5 No types present 0 ❑ No woody vegetation in riparian zone Remarks Subtotal 10 III. Bottom Substrate (silt, sand, detritus, gravel, cobble, boulder) Look at entire reach for substrate scoring, but only look at riffle for embeddedness, and use rocks from all parts of riffle -look for "mud line" or difficulty extracting rocks A. substrate with good mix of gravel, cobble and boulders Score 1. embeddedness <20% (very little sand, usually only behind large boulders) 15 2. embeddedness 20-40% 12 3. embeddedness 40-80% 8 4. embeddedness >80% 3 B. substrate gravel and cobble 1. embeddedness <20% 14 2. embeddedness 20-40% 11 3. embeddedness 40-80% 6 4. embeddedness >80% 2 C. substrate mostly gravel 1. embeddedness <50% g 2. embeddedness >50% 4 D. substrate homogeneous 1. substrate nearly all bedrock 3 2. substrate nearly all sand 3 3. substrate nearly all detritus 2 4. substrate nearly all silt/ clay O Remarks Subtotal 1 IV. Pool Variety Pools are areas of deeper than average maximum depths with little or no surface turbulence. Water velocities associated with pools are always slow. Pools may take the form of "pocket water", small pools behind boulders or obstructions, in large high gradient streams, or side eddies. A. Pools present Score 1. Pools Frequent (>30% of 200m area surveyed) a. variety of pool sizes 10 b. pools about the same size (indicates pools filling in) 8 2. Pools Infrequent (<30% of the 200m area surveyed) a. variety of pool sizes 6 b. pools about the same size 4 B. Pools absent Subtotal 0 ❑Pool bottom boulder-cobble=hard ❑Bottom sandy -sink as you walk ®Silt bottom ❑Some pools over wader depth V. Riffle Habitats Definition: Riffle is area of reaeration -can be debris dam, or narrow channel area. Riffles Frequent Riffles Infrequent VII. Light Penetration Canopy is defined as tree or vegetative cover directly above the stream's surface. Canopy would block out sunlight when the sun is directly overhead. Note shading from mountains, but not use to score this metric. A. Stream with good canopy with some breaks for light penetration B. Stream with full canopy - breaks for light penetration absent C. Stream with partial canopy - sunlight and shading are essentially equal D. Stream with minimal canopy - full sun in all but a few areas E. No canopy and no shading Remarks Score 10 8 2 0 Subtotal—7 VIII. Riparian Vegetative Zone Width Definition: Riparian zone for this form is area of natural vegetation adjacent to stream (can go beyond floodplain). Definition: A break in the riparian zone is any place on the stream banks which allows sediment or pollutants to directly enter the stream, such as paths down to stream, storm drains, uprooted trees, otter slides, etc. Score Score A. well defined riffle and run, riffle as wide as stream and extends 2X width of stream 16 12 B. riffle as wide as stream but riffle length is not 2X stream width 14 7 C. riffle not as wide as stream and riffle length is not 2X stream width 10 3 D. rifles absent 0 3. width 6-12 meters Channel Slope: ❑Typical for area ❑Steep=fast flow ❑Low=like a coastal stream 3 Subtotal 0 VI. Bank Stability and Vegetation 2 B. Riparian zone not intact (breaks) FACE UPSTREAM Left Bank Rt. Bank Score Score A. Banks stable 4 b. width 12-18 meters 1. little evidence of erosion or bank failure(except outside of bends), little potential for erosion. 7 7 B. Erosion areas present 2 d. width < 6 meters 1. diverse trees, shrubs, grass; plants healthy with good root systems 6 6 2. few trees or small trees and shrubs; vegetation appears generally healthy © 0 3. sparse mixed vegetation; plant types and conditions suggest poorer soil binding 3 3 4. mostly grasses, few if any trees and shrubs, high erosion and failure potential at high flow. 2 2 5. little or no bank vegetation, mass erosion and bank failure evident 0 0 Remarks Total 10 VII. Light Penetration Canopy is defined as tree or vegetative cover directly above the stream's surface. Canopy would block out sunlight when the sun is directly overhead. Note shading from mountains, but not use to score this metric. A. Stream with good canopy with some breaks for light penetration B. Stream with full canopy - breaks for light penetration absent C. Stream with partial canopy - sunlight and shading are essentially equal D. Stream with minimal canopy - full sun in all but a few areas E. No canopy and no shading Remarks Score 10 8 2 0 Subtotal—7 VIII. Riparian Vegetative Zone Width Definition: Riparian zone for this form is area of natural vegetation adjacent to stream (can go beyond floodplain). Definition: A break in the riparian zone is any place on the stream banks which allows sediment or pollutants to directly enter the stream, such as paths down to stream, storm drains, uprooted trees, otter slides, etc. 2. breaks common a. width > 18 meters b. width 12-18 meters c. width 6-12 meters d. width < 6 meters 3 3 2 2 0 W 0 0 Remarks 2 Total Page Total 19 ❑ Disclaimer -form filled out, but score doesn't match subjective opinion -atypical stream. Total Score 33 FACE UPSTREAM Lft. Bank Rt. Bank Dominant vegetation: ®Trees ®Shrubs ®Grasses ❑Weeds/old field ❑Exotics (kudzu, etc) Score Score A. Riparian zone intact (no breaks) 1. width > 18 meters 5 5 2. width 12-18 meters 4 4 3. width 6-12 meters 3 3 4. width < 6 meters 2 2 B. Riparian zone not intact (breaks) 1. breaks rare a. width > 18 meters 4 4 b. width 12-18 meters 3 3 c. width 6-12 meters 2 2 d. width < 6 meters i 2. breaks common a. width > 18 meters b. width 12-18 meters c. width 6-12 meters d. width < 6 meters 3 3 2 2 0 W 0 0 Remarks 2 Total Page Total 19 ❑ Disclaimer -form filled out, but score doesn't match subjective opinion -atypical stream. Total Score 33 ! SC8Facing Downstream 7 BENTHIC MACROINVERTEBRATE LAB SHEET Water Body SC 10 Type Sample visual, Sweep net Date Collected 8/18/2018 & 03/19/2019 Road/County Craig Rd. /Stokes Countv Collection Card No N/A Collectors/Analyst A.Winn,R.Fawcett, J.Stahl SC10 March 2019 A,C,R August 2018 A,C,R Trico tera Trichoptera Chimarra aterrima A 11 Di lectrona modesta R(2) Di lectrona modesta C(3) Hydropsyche depravata R(l) Chimarra aterima A(26 Crustacea Cran on s . R(1) Coleoptera Colelatus caelatipennis princeps R(l) Coleoptera Uvarus s . R(l) Anch tarsus bicolor R(1) Helochares s. R(l) Chironomidae Chironomidae Chironomus s. R(1) Concha elo is s. R(I) Cricoto us s. A 10 Limno h es s. R(I) Diamesa s. C(4) Parametriocnemus s. C(9) Eukiefferiella clari ennis gp. C(3) Parametriocnemus s . A(32) Crustacea Para haenocladius s. R(1) ) nyx s. R(I) Zavrelim is s . R(l) Misc Diptera Misc Diptera Tipula (Nobilotipula) SP- C 5 Ti ula s . R(l) Simulium decorum R(l) Simulium vittatum R(l) Total Taxa 14 11 Total EPT 2 3 Biotic Index 4.65 4.65 Bioclassification Good Good Habitat Assessment Field Data Sheet Mountain/ Piedmont Streams Biological Assessment Unit, DWQ TOTAL SCORE 29 Directions for use: The observer is to survey a minimum of 100 meters with 200 meters preferred of stream, preferably in an upstream direction starting above the bridge pool and the road right-of-way. The segment which is assessed should represent average stream conditions. To perform a proper habitat evaluation the observer needs to get into the stream. To complete the form, select the description which best fits the observed habitats and then circle the score. If the observed habitat falls in between two descriptions, select an intermediate score. A final habitat score is determined by adding the results from the different metrics. Stream SC 10 Location/road: Belews Ck. Landfill(Road Name Craig_Rd )County Stokes Date 08/18/2018 & 03/19/2019 CC# Basin Dan River Subbasin Observer(s) A.Winn Type of Study: ❑Fish ®Benthos ❑Basinwide ®Special Study (Describe) 06-0645yer2 Latitude 36.26668 Longitude -80.07249 Ecoregion: [IMT ®P []Slate Belt []Triassic Basin Water Quality: Temperature N/A C DO N/A mg/I Conductivity (corr.) N/A µS/cm pH N/A Physical Characterization: Visible land use refers to immediate area that you can see from sampling location - include what you estimate driving thru the watershed in watershed land use. Visible Land Use: 10 Forest %Residential %Active Pasture %Active Crops %Fallow Fields %Commercial _90%Industrial %Other Describe: coal ash landfill Watershed land use : ®Forest ❑Agriculture ❑Urban ❑Animal operations upstream Width: (meters) Stream 0.25 Channel (at top of bank) N/A Stream Depth: (m) Avg 0_04_ Max 0.08 ❑ Width variable ❑ Large river >25m wide Bank Height (from deepest part of riffle to top of bank -first flat surface you stand on): (m) N/A Bank Angle: 45° or ❑ NA (Vertical is 90°, horizontal is 0°. Angles > 90° indicate slope is towards mid -channel, < 90° indicate slope is away from channel. NA if bank is too low for bank angle to matter.) ❑Channelized Ditch []Deeply incised -steep, straight banks ❑Both banks undercut at bend ❑Channel filled in with sediment ❑Recent overbank deposits ❑Bar development ❑Buried structures ®Exposed bedrock ❑Excessive periphyton growth ❑ Heavy filamentous algae growth❑Green tinge ❑ Sewage smell Manmade Stabilization: ❑N ®Y: ®Rip -rap, cement, gabions ®Sediment/grade-control structure ❑Berm/levee Flow conditions: []High ❑Normal []Low Turbidity: ®Clear ❑Slightly Turbid ❑Turbid ❑Tannic []Milky ❑Colored (from dyes) Good potential for Wetlands Restoration Project?? ❑ YES ®NO Details landfill site Channel Flow Status Useful especially under abnormal or low flow conditions. A. Water reaches base of both lower banks, minimal channel substrate exposed ❑ B. Water fills >75% of available channel, or <25% of channel substrate is exposed ❑ C. Water fills 25-75% of available channel, many logs/snags exposed ❑ D. Root mats out of water ❑ E. Very little water in channel, mostly present as standing pools Weather Conditions: Paqyly Cloudy, mid 50s Photos: ❑N ®Y ® Digital ❑35mm Remarks Very little water present in channel and very little habitat available by way of rocks or woody debris good canopy cover, and gassy hill above stream I. Channel Modification Score A. channel natural, frequent bends 5 B. channel natural, infrequent bends (channelization could be old) 4 C. some channelization present 3 D. more extensive channelization, >40% of stream disrupted 2 E. no bends, completely channelized or rip rapped or gabioned, etc. ( ❑Evidence of dredging ❑Evidence of desnagging=no large woody debris in stream ❑Banks of uniform shape/height Remarks Subtotal-0- 11. ubtotal0 II. Instream Habitat: Consider the percentage of the reach that is favorable for benthos colonization or fish cover. If >70% of the reach is rocks, 1 type is present, circle the score of 17. Definition: leafpacks consist of older leaves that are packed together and have begun to decay (not piles of leaves in pool areas). Mark as Rare, Common, or Abundant. —Rocks Macrophytes Sticks and leafpacks Snags and logs Undercut banks or root mats AMOUNT OF REACH FAVORABLE FOR COLONIZATION OR COVER 6. embeddedness 20-40% >70% 40-70% 20-40% <20% Score Score Score Score 4 or 5 types present 20 16 12 8 3 types present 19 15 11 7 2 types present 18 14 10 4. embeddedness >50% 1 type present 17 13 9 5 No types present 0 6. substrate nearly all sand 3 7. substrate nearly all detritus ❑ No woody vegetation in riparian zone Remarks 8. substrate nearly all silt/ clay Subtotal 6 III. Bottom Substrate (silt, sand, detritus, gravel, cobble, boulder) Look at entire reach for substrate scoring, but only look at riffle for embeddedness, and use rocks from all parts of riffle -look for "mud line" or difficulty extracting rocks. A. substrate with good mix of gravel, cobble and boulders Score 5. embeddedness <20% (very little sand, usually only behind large boulders) 15 6. embeddedness 20-40% 12 7. embeddedness 40-80% 8 8. embeddedness >80% 3 B. substrate gravel and cobble 5. embeddedness <20% 14 6. embeddedness 20-40% 11 7. embeddedness 40-80% 6 8. embeddedness >80% 2 C. substrate mostly gravel 3. embeddedness <50% 8 4. embeddedness >50% 4 D. substrate homogeneous 5. substrate nearly all bedrock 3 6. substrate nearly all sand 3 7. substrate nearly all detritus 2 8. substrate nearly all silt/ clay Remarks Subtotal 1 IV. Pool Variety Pools are areas of deeper than average maximum depths with little or no surface turbulence. Water velocities associated with pools are always slow. Pools may take the form of "pocket water", small pools behind boulders or obstructions, in large high gradient streams, or side eddies. A. Pools present Score 1. Pools Frequent (>30% of 200m area surveyed) a. variety of pool sizes 10 b. pools about the same size (indicates pools filling in) 8 2. Pools Infrequent (<30% of the 200m area surveyed) a. variety of pool sizes 6 b. pools about the same size B. Pools absent 0 Subtotal 4 ❑Pool bottom boulder-cobble=hard ❑Bottom sandy -sink as you walk ❑Silt bottom ❑Some pools over wader depth Remarks Page Total 11 V. Riffle Habitats Definition: Riffle is area of reaeration -can be debris dam, or narrow channel area. Riffles Frequent Riffles Infrequent A. well defined riffle and run, riffle as wide as stream and extends 2X width of stream Score 16 Score 12 B. riffle as wide as stream but riffle length is not 2X stream width 14 7 C. riffle not as wide as stream and riffle length is not 2X stream width 10 3 D. riffles absent O 3 Channel Slope: ❑Typical for area ❑Steep=fast flow ❑Low=like a coastal stream 2 Subtotal 0 VI. Bank Stability and Vegetation FACE UPSTREAM Left Bank Rt. Bank Score a. width > 18 meters Score A. Banks stable b. width 12-18 meters 3 1. little evidence of erosion or bank failure(except outside of bends), little potential for erosion. 7 7 B. Erosion areas present d. width < 6 meters 1 1. diverse trees, shrubs, grass; plants healthy with good root systems 2. breaks common 2. few trees or small trees and shrubs; vegetation appears generally healthy 5 5 3. sparse mixed vegetation; plant types and conditions suggest poorer soil binding 3 3 4. mostly grasses, few if any trees and shrubs, high erosion and failure potential at high flow. 2 2 5. little or no bank vegetation, mass erosion and bank failure evident 0 0 0 Remarks Total 12 Remarks VII. Light Penetration Canopy is defined as tree or vegetative cover directly above the stream's surface. Canopy would block out sunlight when the sun is directly overhead. Note shading from mountains, but not use to score this metric. A. Stream with good canopy with some breaks for light penetration B. Stream with full canopy - breaks for light penetration absent C. Stream with partial canopy - sunlight and shading are essentially equal D. Stream with minimal canopy - full sun in all but a few areas E. No canopy and no shading Remarks Score 10 8 7 2 Subtotal 0 VIII. Riparian Vegetative Zone Width Definition: Riparian zone for this form is area of natural vegetation adjacent to stream (can go beyond floodplain). Definition: A break in the riparian zone is any place on the stream banks which allows sediment or pollutants to directly enter the stream, such as paths down to stream, storm drains, uprooted trees, otter slides, etc. FACE UPSTREAM Lft. Bank Rt. Bank Dominant vegetation: ®Trees ®Shrubs ®Grasses ❑Weeds/old field ❑Exotics (kudzu, etc) Score Score A. Riparian zone intact (no breaks) 1. width > 18 meters 5 5 2. width 12-18 meters 4 4 3. width 6-12 meters 3 3 4. width < 6 meters 2 2 B. Riparian zone not intact (breaks) 1. breaks rare a. width > 18 meters 4 4 b. width 12-18 meters 3 3 c. width 6-12 meters 2 2 d. width < 6 meters 1 1 2. breaks common a. width > 18 meters O3 O b. width 12-18 meters 2 2 c. width 6-12 meters 1 1 d. width < 6 meters 0 0 Remarks ❑ Disclaimer -form filled out, but score doesn't match subjective opinion -atypical stream. Total 6 Page Total 18 Total Score 29 4 SC10 Monitoring Site SC 10 facing Down Stream SC 10 Facing Up Stream