Maine Department of Environmental Protection Biological Monitoring Program Aquatic Life Classification Attainment Report Station Information Station Number: S-1087 River Basin: Penobscot Waterbody: Penobscot River - Station 1087 HUC8 Name: Lower Penobscot Town: Old Town Latitude: 44 56 19.26 N Directions: MILFORD DAM TAILWATER; SET ~30 METERS Longitude: 68 38 36.72 W ABOVE MILFORD BRIDGE. PIN SITE CODE: BBMTAIL. Stream Order: 7

Sample Information Log Number: 2436 Type of Sample: CONE Date Deployed: 7/1/2015 Subsample Factor: X4 Replicates: 3 Date Retrieved: 7/30/2015 Classification Attainment Statutory Class: B Final Determination: A Date: 12/8/2016 Model Result with P≥0.6: A Reason for Determination: Model Date Last Calculated: 12/8/2016 Comments: Model Probabilities First Stage Model C or Better Model Class A 0.48 Class C 0.01 Class A, B, or C 1.00 Class B 0.51 NA 0.00 Non-Attainment 0.00 B or Better Model A Model Class A or B 1.00 Class A 0.98 Class C or Non-Attainment 0.00 Class B or C or Non-Attainment 0.02 Model Variables 01 Total Mean Abundance 2206.67 18 Relative Abundance Ephemeroptera 0.03 02 Generic Richness 41.00 19 EPT Generic Richness 22.00 03 Plecoptera Mean Abundance 38.67 21 Sum of Abundances: Dicrotendipes, 0.00 04 Ephemeroptera Mean Abundance 66.67 Micropsectra, Parachironomus, Helobdella 05 Shannon-Wiener Generic Diversity 2.67 23 Relative Generic Richness- Plecoptera 0.10 06 Hilsenhoff Biotic Index 3.11 25 Sum of Abundances: Cheumatopsyche, 170.17 07 Relative Abundance - Chironomidae 0.10 Cricotopus, Tanytarsus, Ablabesmyia 08 Relative Generic Richness Diptera 0.37 26 Sum of Abundances: Acroneuria, 14.21 09 Hydropsyche Abundance 449.24 Maccaffertium, Stenonema 11 Cheumatopsyche Abundance 168.83 28 EP Generic Richness/14 0.79 12 EPT Generic Richness/ Diptera 1.47 30 Presence of Class A Indicator Taxa/7 0.71 Generic Richness Five Most Dominant Taxa 13 Relative Abundance - Oligochaeta 0.00 Rank Taxon Name Percent 15 Perlidae Mean Abundance (Family 38.67 1 Chimarra 46.10 Functional Group) 2 Hydropsyche 20.36 16 Tanypodinae Mean Abundance 22.81 3 Macrostemum 8.85 (Family Functional Group) 4 Cheumatopsyche 7.65 17 Chironomini Abundance (Family 123.44 5 Polypedilum 5.59 Functional Group)

Report Printed: 12/8/2016 Contact: [email protected] or (207)287-7688 Page 1 Maine Department of Environmental Protection Biological Monitoring Program Aquatic Life Classification Attainment Report Station Number: S-1087 Town: Old Town Date Deployed: 7/1/2015 Log Number: 2436 Waterbody: Penobscot River - Station 1087 Date Retrieved: 7/30/2015 Sample Collection and Processing Information Sampling Organization: PENOBSCOT INDIAN NATION Taxonomist: MICHAEL WINNELL Waterbody Information - Deployment Waterbody Information - Retrieval Temperature: 20.3 deg C Dissolved Oxygen: 8.62 mg/l Dissolved Oxygen Saturation: 95.4 % Specific Conductance: 36.7 uS/cm Velocity: pH: 6.96 Wetted Width: 175 m Bankfull Width: 200 m Depth: 180 cm Water Chemistry Summary of Habitat Characteristics Landuse Name Canopy Cover Terrain Upland Hardwood Open Rolling Urban Potential Stressor Location Substrate Regulated Flows Below Dam Bedrock 60 % Urban Runoff Main Stem Gravel 20 % Rubble/Cobble 20 % Landcover Summary - 2004 Data

Sample Comments THREE YEARS POST REMOVAL OF GREAT WORKS DAM

Report Printed: 12/8/2016 Contact: [email protected] or (207)287-7688 Page 2 Maine Department of Environmental Protection Biological Monitoring Program Aquatic Life Taxonomic Inventory Report Station Number: S-1087 Waterbody: Penobscot River - Station 1087 Town: Old Town Log Number: 2436 Subsample Factor: X4 Replicates: 3 Calculated: 12/8/2016 Maine Count Hilsenhoff Functional Relative Taxonomic (Mean of Samplers) Biotic Feeding Abundance % Taxon Code Actual Adjusted Index Group Actual Adjusted Perlidae 09020209 20.00 -- 0.9 Acroneuria 09020209042 8.29 0 PR 0.4 Acroneuria abnormis 09020209042121 1.33 0 PR 0.1 Acroneuria lycorias 09020209042125 2.67 -- 0.1 Perlesta 09020209046 1.33 2.76 5 PR 0.1 0.1 Paragnetina 09020209049 11.05 1 PR 0.5 Paragnetina immarginata 09020209049149 4.00 -- 0.2 Paragnetina media 09020209049151 1.33 -- 0.1 Agnetina 09020209050 6.67 16.57 2 PR 0.3 0.8 Agnetina capitata 09020209050152 1.33 2 PR 0.1 Ophiogomphus 09020302015 1.33 1 PR 0.1 Ophiogomphus anomalus 09020302015031 1.33 -- 0.1 Baetidae 09020401 6.67 6.67 -- 0.3 0.3 Heterocloeon 09020401005 2.67 4.00 2 SC 0.1 0.2 Heterocloeon curiosum 09020401005020 1.33 -- 0.1 Heptageniidae 09020402 1.33 -- 0.1 Epeorus 09020402009 1.33 1.48 0 SC 0.1 0.1 Leucrocuta 09020402011 5.33 5.93 1 SC 0.2 0.3 Maccaffertium 09020402015 5.33 5.93 4 SC 0.2 0.3 Isonychia 09020404018 36.00 36.00 2 CF 1.6 1.6 Serratella 09020410037 6.67 2 CG 0.3 Serratella deficiens (Teloganopsis 09020410037121 2.67 -- 0.1 deficiens) Serratella serratoides 09020410037124 4.00 -- 0.2 Chimarra 09020601003 22.67 1017.33 2 CF 1.0 46.1 Chimarra obscura 09020601003003 942.67 -- 42.7 Chimarra socia 09020601003004 52.00 -- 2.4 Neureclipsis 09020603008 6.67 6.67 7 CF 0.3 0.3 Hydropsychidae 09020604 74.67 -- 3.4 Cheumatopsyche 09020604015 153.33 168.83 5 CF 6.9 7.7 Hydropsyche 09020604016 173.33 449.24 4 CF 7.9 20.4 Hydropsyche bronta 09020604016029 21.33 -- 1.0 Hydropsyche morosa 09020604016030 60.00 -- 2.7 Hydropsyche sparna 09020604016032 94.67 -- 4.3 Hydropsyche phalerata 09020604016047 46.67 -- 2.1 Hydropsyche simulans 09020604016049 9.33 -- 0.4 Hydropsyche placoda 09020604016059 2.67 -- 0.1 Macrostemum 09020604018 195.26 3 CF 8.8 Report Printed: 12/8/2016 Contact: [email protected] or (207)287-7688 Page 3 Maine Department of Environmental Protection Biological Monitoring Program Aquatic Life Taxonomic Inventory Report Station Number: S-1087 Waterbody: Penobscot River - Station 1087 Town: Old Town Log Number: 2436 Subsample Factor: X4 Replicates: 3 Calculated: 12/8/2016 Maine Count Hilsenhoff Functional Relative Taxonomic (Mean of Samplers) Biotic Feeding Abundance % Taxon Code Actual Adjusted Index Group Actual Adjusted Macrostemum zebratum 09020604018054 177.33 -- 8.0 Glossosoma 09020606020 1.33 1.33 0 SC 0.1 0.1 Protoptila 09020606022 1.33 1.33 1 SC 0.1 0.1 Mayatrichia 09020607033 1.33 SC 0.1 Mayatrichia ayama 09020607033085 1.33 -- 0.1 Brachycentrus 09020609043 2.67 0 CF 0.1 Brachycentrus appalachia 09020609043096 2.67 -- 0.1 Pycnopsyche 09020610049 2.67 2.67 4 SH 0.1 0.1 Lepidostoma 09020611064 1.33 1.33 1 SH 0.1 0.1 Corydalus 09020701002 1.33 6 PR 0.1 Corydalus cornutus 09020701002002 1.33 -- 0.1 Chironomidae 09021011 1.33 -- 0.1 Nilotanypus 09021011012 1.34 6 PR 0.1 Nilotanypus fimbriatus 09021011012027 1.33 -- 0.1 Pentaneura 09021011014 1.34 6 PR 0.1 Pentaneura inconspicua 09021011014028 1.33 -- 0.1 Rheopelopia 09021011017 20.13 PR 0.9 Rheopelopia acra group 09021011017036 20.00 -- 0.9 Corynoneura 09021011036 4.00 4.03 7 CG 0.2 0.2 Nanocladius 09021011049 1.34 3 CG 0.1 Nanocladius downesi 09021011049092 1.33 -- 0.1 Rheocricotopus 09021011057 9.39 6 CG 0.4 Rheocricotopus robacki 09021011057105 9.33 -- 0.4 Tvetenia 09021011065 36.23 5 CG 1.6 Tvetenia vitracies 09021011065113 36.00 -- 1.6 Cladotanytarsus 09021011068 1.33 1.34 7 CG 0.1 0.1 Rheotanytarsus 09021011072 4.03 6 CF 0.2 Rheotanytarsus exiguus group 09021011072127 2.67 CF 0.1 Rheotanytarsus pellucidus 09021011072128 1.33 CF 0.1 Tanytarsus 09021011076 1.34 6 CF 0.1 Tanytarsus buckleyi 09021011076139 1.33 CF 0.1 Polypedilum 09021011102 94.67 123.44 6 SH 4.3 5.6 Polypedilum flavum 09021011102182 26.67 -- 1.2 Polypedilum ontario 09021011102194 1.33 -- 0.1 Lopescladius 09021011113 8.00 8.05 CG 0.4 0.4 Simulium 09021012047 6.67 4 CF 0.3 Simulium fibrinflatum 09021012047059 1.33 -- 0.1 Simulium jenningsi species group 09021012047070 5.33 CF 0.2 Report Printed: 12/8/2016 Contact: [email protected] or (207)287-7688 Page 4 Maine Department of Environmental Protection Biological Monitoring Program Aquatic Life Taxonomic Inventory Report Station Number: S-1087 Waterbody: Penobscot River - Station 1087 Town: Old Town Log Number: 2436 Subsample Factor: X4 Replicates: 3 Calculated: 12/8/2016 Maine Count Hilsenhoff Functional Relative Taxonomic (Mean of Samplers) Biotic Feeding Abundance % Taxon Code Actual Adjusted Index Group Actual Adjusted Atherix 09021015055 1.33 1.33 2 PR 0.1 0.1 Hemerodromia 09021016057 5.33 5.33 3 PR 0.2 0.2 Dineutus 09021104032 2.67 2.67 2 -- 0.1 0.1 Stenelmis 09021113070 14.67 22.67 5 SC 0.7 1.0 Stenelmis concinna 09021113070054 8.00 -- 0.4

Report Printed: 12/8/2016 Contact: [email protected] or (207)287-7688 Page 5