PA Rsglon I SHUELOT RIVER SURVEY MAy, JULY, AND AUGUST 1974 1974 REPORT OF D/ U.s ENvIRoNi fENTA PROTECTION AGENCY REGION I SURVEILLANCE AND ANALYSIS DIVISION NEED 1 HEIGHTS, MASSACJIUSET 02194 ------- TABLE OF CONTENTS OVERVIEW HYDROLOGICAL AND PHYSICAL CHARACTERISTICS Hydrological Characteristics Physical Characteristics Hydraulics Cross Sections TIME OF TRAVEL STUDIES WATER ANi) WASTEWATER QUALITY General River Industrial Homestead Woolen Mills A. C. Lawrence Leather Company Paper Service Mills, Inc. Ashuelot Paper Company, Inc. G. E. Robertson & Company liinsdale Products Inc. Nunicipa 1 Keene Wastewater Treatment Facility SEDIMENTS Sediment Oxygen Demand Qualitative Biology DISCUSS ION ------- LIST OF TABLES TABLE I RECON1 1ENDED USE CLASSIFICATIONS AND WATER QUALITY STANDARDS 2 RELATIVE ORDER OF SIGNIFICANT LOCATIONS 3 ABBREVIATIONS USED IN TILE REPORT 4 AS}I1JELOT RIVER CROSS SECTIONS AUGUST 1, 1974 5 ASHUELOT RIVER TIME OF TRAVEL 6 RIVER STATION LOCATIONS, DATES SAMPLED, NUMBER OF SA LES COLLECTED, AND TYPES OF ANALYSES PERFORMED 7 ASffLJELOT RIVER FIELD AND LABORATORY RESULTS 8 ASHUELOT RIVER DAMS LOCATION AND EFFECT ON REAERATION 9 MUNICIPAL AND INDUSTRIAL WASTE YATER - SAMPLING LOCATIONS, DATES SAMPLED, NUMBER OF SAMPLES COLLECTED, AND TYPES OF ANALYSES PERFORMED 10 INDUSTRIAL WASTE FIELD MEASUREMENTS 11 MUNICIPAL AND INDUSTRIAL WASTEWATER LABORATORY ANALYSES RESULTS 12 MUNICIPAL WASTE FIELD MEASUREMENTS 13 SEDIMENT STATIONS SAMPLING LOCATIONS, DATES SAMPLED, NUMBER OF SAMPLES COLLECTED, AND TYPES OF ANALYSES PERFORMED 14 SEDIMENT OXYGEN DENAND (SOD) ASHUELOT RIVER, NEW HAMPSHIRE, AUGUST, 1974 15 ASHIJELOT RIVER, NEW HAMPSHIRE BENTHIC INVERTEBRATE - WATER QUALITY SURVEY 16 ASHUELOT RIVER, NEW HAMPSHIRE QUALITATIVE BENTHOS SURVEY AUGUST, 1974 ------- LIST OF FIGURES FIGURE 1 HYDRAULIC PROFILE OF THE ASHIJELOT RIVER 2 ASHUELOT RIVER CROSS SECTIONS 3 ASHUELOT RIVER TIME OF TRAVEL 4 RIVER STATION SAMPLING LOCATIONS 5 DISSOLVED OXYGEN (DO) MEASUREMENTS AT SWANZEY STATION 6 DISSOLVED OXYGEN (DO) MEASUREMENT AT ROUTE 10 BRIDGE NEAR WESTPORT 7 DI5SOLVED OXYGEN (DO) MEASURE 1ENTS AT A.C. LAWRENCE COMPANY BRIDGE (A5HRO8) 8 WASTEWATER SAMPLING LOCATIONS 9 DIVISION OF FLOW AT G.E. ROBERTSON & COMPANY, HINSDALE, NEW HAMPSHIRE 10 SEDIMENT OXYGEN DEMANDS AND BIOLOGY STATIONS 11 ASHIJELOT RIVER DISSOLVED OXYGEN SATURATION PROFILE 12 ASHUELOT RIVER DISSOLVED OXYGEN PROFILE 13 ASHUELOT RIVER PHOSPHORUS CONCENTRATIONS 14 AS}IUELOT RIVER SEDIMENT OXYGEN D 1AND (SOD) PROFILE, AUGUST, 1974, KEENE TO HINSDALE ------- ASRUELOT RI.VER SURVEY NAY, JULY, AND AUGUST, 1974 OVERVIEW During May, July, and August, 1974, the United States Environmental Protection Agencys (EPA) Region I, Surveillance and Analysis Division conducted a study on the Ashuelot River between the West Street Bridge in Keene, and its confluence with the Connecticut River below Hinsdale, The main stem of the river is entirely within the ate of New Hampshire. The purpose of the study was to provide data to determine proper waste load allocations for the City of Keenes Wastewater Treatment Facility (WWTF). The Ashuelot River is classified B from Surry Keene town line, to the A. C. Lawrence Bridge in Winchester and C below the A. C. Lawrence Bridge to its confluence with the Connecticut River in Hinsdale. Table 1 shows the New Hampshire recommended use classifications and water quality standards for Class A D waters. Table 2 shows the river mile order of al]. the sampling points, dams, and cross section areas referenced to in this report. The study was divided into four distinct phases, each of which will be discussed separately. The four phases were: 1. Hydrological and physical characteristics a. River bed cross sections b. Hydraulic profile c. Design flows 2. Time of travel studies a. High flow ------- 2 b. Low flow 3. Water and wastewater characteristics a. River b. Industrial c. Municipal 4. Sediments a. Oxygen demand b. Benthic biological quality This report will be a compilation of the data gathered during the study and information from other sources. A list of abbreviations used in this report is given in Table 3. The data was intended to be used by the State of New Hampshire Water Supply and Pollution Control Commission and EPA s Region I Systems Analysis Branch in modeling the river to determine waste load allocations for the City of Keene. The Systems Analysis Branch report will be published separately. HYDROLOGICAL AND PHYSICAL CHARACTERISTICS Hydrological Characteristics Surry Mountain Dam, approximately 11.26 kilometers (seven miles) upstream of Keerre, Lontrols the water flow from the upper Ashuelot River watershed. This flow is gaged by the U.S. Geological Survey just below the dam. The two major tributaries to the river, Otter Brook and South Branch, are damcontrolled and enter at Ashuelot River kilometer 41.5 and 37.5 (mile 25.8 and 23.3) respectively. The drainage area of the Ashuelot River is 261 square kilometers (101 square miles) at Surry Mountain gage and 1087.3 square kilometers (4205 square miles) at the Hinsdale gage, which is approximately 2.09 kilometers (1.3 miles) ------- 3 upstream of the Connecticut River confluence. The seven consecutive day low flow with a recurrence interval of ten years at the Surry Mountain and Hinsdale gages are 0.057 cubic meters per second (cms) (2.01 cfs) and 1.26 cms (44.58 cfs) respectively. During the three day August water quality survey, the average flows were 0.31 ems (11 cfs) and 2.25 cms (79 cfs) at the respective gages. Physical Characteristics Hydr iulics The hydraulic profile of the river, Figure 1, shows that the hydraulic gradient is fairly gradual until river kilometer 8.5 (mile 5.5) where the river then drops approximately 81 meters (270 feet) in 85 kilometers. There are presently seven run of the river dams on the river below Surry Mountain Dam. See Figure 1. Cross Sections On August 1, 1974, cross sections of the river at 14 bridges were determined. The locations and corresponding cross sections are shown in Table 4 and Figure 2. TIME OF TRAVEL STUDIES The time it takes for a hypothetical volume of water to travel from one place to another, and consequently, the time of travel for any pollutants, is very important in trying to model a riversystem where multiple discharges and nonconservative substances, such as biochemical oxygen demand (BOD), are being modeled. ------- 4 The time of travel studies conducted on the Ashuelot River from Keene, New Hampshire, to the Connecticut River consist of timing the passage of Rhodainine WT and B dye using recording fluorometers to detect fluorescence. Where sharp normal peak curves occurred, the peak was considered the centroid of the dye. When the dye passed the pick up location strung out, i.e. causing a long flat curve on the recorder, or excessive skewness occurred, the actual centroid of the dye was computed. These time of travel are shown in Table 5 and Figure 3 for both the May high flow and July August low flow dye surveys. The flows at the Surry Mountain and Hinsdale gages during each study are shown below. AVERAGE FLOW CUBIC METERS CUBIC FEET CAGE DATE PER SECOND PER SECOND Surry Mountain May, 1974 14.7 520 July August, 1974 0.4 14 Hinsdale May, 1974 104.8 3700 July August, 1974 2.5 90 Time of travel is usually conducted twice on a river: once at high flow conditions and once at low flow conditions. From these, aloga rithmic relation is assumed for different flows whether higher or lower,- (Figures 31 through 33.) Thus a reasonable time of travel for any flow condition can be found from the two time of travel studies data (Figure 34). The following is an example of how to use the curves. To determine the time of travel, at 250 cfs measured at the liinsdale gage, from the Homestead Woolen discharge in West Swanzey (river ------- kilometer 30.6) to the bridge at A.C. Lawrence Leather Company (river kilometer 14.3) first turn to Figures 3-]., 32, and 33. Determine the time of travel for the established reaches. Plot those points on Figure 34. Then,determjne time value at river kilometer 30.6 (50 hours) subtract it from the time value at river kilometer 1 .3 (107 hours) yielding a time of travel of 57 hours or 2.5 days from domestead Woolen discharge to the bridge at A.C. Lawrence with a 250 cfs flow measured at the Hinsdale gage. WATER AND WASTEWATER STUDY General The rivers major industrial discharges below the Keene WWTF and the Keene WWTF were sampled during the survey. The study consisted of dividing the survey area into three reaches: West Street in Keene to the bridge at West Swanzey; the bridge at West Swanzey to the bridge at A.C. Lwrence Leather Company; the bridge at A.C. Lawrence Leather Company to the railroad bridge just before the confluence with the Connecticut River in Hinsdale. Each reach was sampled for one day. Each station within each reach was grab sampled three times within an approximate sixhour period. Each industry was sampled taking one four to sixhour composite sample. In addition, two grab biocher ical oxygen demand samples were collected t each industrial waste discharge. Flow measurements were taken at -each- industrial discharge during sampling whenever feasible. In lieu of actual flow measurement, company discharge figures were used. The discharge from the Keene Wastewater Treatment Facility was composite sampled for three 24hour periods. The flow meter at the treatment plant was used for flow proportioning the composite sample aliquots. ------- 6 A field laboratory was set up in West Swanzey and used as a base of operations. The Environmental Protection Agency Region I s standard chain of custody procedures were utilized in the collection and shipping of all samples. All-water and wastewater analyses were performed by Region Is laboratory at Needham Heights, Nassachusetts, (NERL) except for field measurements which included p 11 , temperature, and dissolved oxygen. River S p1ing The river was divided into eleven sampling sites. Each site was sampled three times. Figure 4 shows the river sampling sites. River station locations, dates of sampling, number of samples collected, and types of analyses performed are given in Table 6. The results of the analyzes are shown in Table 7. - In addition to grab samples, three stations were selected to monitor dissolved oxygen (Do) (see Figure 4). Figures 57 show the DO variations and corresponding percent saturation versus time at the Swanzey Station; Route 10, near Westport; and A.C. Lawrence Bridges respectively. A pyrheliometer, an instrument which measures sunlight intensity, was used during the survey. - Unfortunately, the ins-trument malfunctioned. - Thus no direct correlation of sunlight intensity versus DO variat.5on could be made. However, the skies were partly sunny to sunny during most of the survey. Dissolved oxygen values above and below four of the -dams were also obtained. Figure 1 shows the sampling locations. Table 8 shows the results of the samplings. ------- 7 Industrial Wastewater Sampling Six industries disc-harging directly into the Ashuelot River were sampled during the survey. All industries except Homestead Woolen use the river for process water. Locations of each industry are shown in Table 9 and Figure 8. Dates of sampling, number of samples, and types of analyzes performed at each plant are shown in Table 9. The following industries were sampled: Homestead Woolen Mills (Station ASHIO2) The mill works three shifts; the first and second shifts running at equal production and the third shift operating at a lower rate. All wastes discharge into a raceway. A 16 contracted rectangular weir was installed in the raceway to measure the flow during sampling. Samples were collected as the wastewater overflowed the weir. A.C. Lawrence Leather Company (Station ASHIO3) The company uses the chrome tanning process in processing shearling hides. Most ofthe work is done during one shift; 7:00 a.m. to 2:00 p.m. Wheel dumps occur throughout the day. Samples were collected, behind the companys 12 contracted rectangular weir. The weir was used to measure flow throughout the sampling period. Paper Service Mills 1 Inc . (Station AsHIO4) Paper Service works three shifts per day, six days per week. They produce tissue paper but use no wet strength resins. Wastewater from. the two paper machines discharge into a raceway. A 30 contracted rectangular weir was installed in the raceway to measure flow. Samples were collected as the wastewater ------- 8 overflowed the weir. A small discharge, overflow from a saveall, was being discharged to the Ashuelot River above the raceway during part of the survey. No flow volume was obtained, but a grab BOD 5 analysis of the effluent revealed a value of 90, which is a factor of five below the raceway wastewater concentration. Ashuelot Paper Company, Inc . (Station ASHIO5) A huelot Paper operates 24 hours per day, seven days per week with production approximately constant. Tissue paper is their primary product and some wet strength resins are used. Ashuelot Paper is beginning to divert flow from direct discharge to the river to aerated lagoons. During the survey, a portion of the approximately 0.04 cubic meters-per second (960,000 gallons per day) was being diverted to the lagoons. There was no discharge from the lagoons as the holding capacity of the lagoons hadnt yet been exceeded. However, during part of the time the remaining mill discharge was being sam led, a portion of the wastewater being diverted to the lagoons discharged directly to the river. A grab sample during the discharge showed a BOB 5 of 580 mg which was consistent with the discharge being sampled. No flow measurements were feasible so approximate flows supplied by the company based on a process water balance ares being used. G.E. Robertson & Company (Station ASHIO6) Robertson uses recycled paper to make toilet tissue. The mill operates three shifts, six day per week. The mill is unique in that it uses a water wheel to drive the paper machine when enough iater is available for powering the wheel and for process makeup water. The mill gets the water%by diverting ------- 9 through the canal. Wastewater sampling and flow measurement at G.E. Robertson was too difficult for the length of time available for the survey. Consequently, since only the amount of waste. entering the river was important for the survey and not the identification of the specific load from G.E. Robertson, the entire flow entering the j 1 ant was measured and samples collected at the common discharge. This accounts for the extremely high flows and low concentrations in Table 9. Flows were calculated using the canal area and the velocity as measured with a Price current meter. Figure 9 shows the river water flow through G.E. Robertson. One can see that part of the water in the canal is diverted around the plant. The portion of water entering the plant is further split into power supply, bypass, and process water. All water which enters the plant, however, exits at the same location. Rinsdale Products (Station ASHIO7) Hinsdale Products produces tissue towel, using recycled paper for stock. Some of the recycled paper is deinked at the plant and wet strength resins are used in making the tissue. The mill operates on three shifts with production being essentially the same on each shift. Samples were collected just before the wastewater left the plant. Flows were measured using channel area and a Pygmy current meter. The results of all the industrial waste sampling are sho in in Tables 10 and 11. Nunicipal Was tewater Sampling Figure 8 and Table 9 describe the location of the City of Keenets wastewater discharge. The discharge was sampled for 24 hours for three conseccitive days. ------- 10 The City has a primary treatment plant consisting of Imhoff tanks, chlorination, and sludge drying. The waste enters a.pumping station and is pumped to the Imhoff tanks. The amount of water pumped is recorded. This is the only flow recorder in the system and was used for flow compositing the -samples. During the survey, the chlorinator was down for repairs which accounts for the high coliform bacteria in the effluent samples. The number of samples collected and analyses performed are shown in Table 9. The results of the analyses are shown in Tables 11 and 12. SEDIMENTS Prom August 26, through August 28, 1974,Region I biologists collected ediment samples at nine stations along the Ashuelot River. A qualitative biology study was done on sediments from all nine stations. Sediment Oxygen Demand (SOD) was found for six of the station sludges. Figure 10 and Table 13 describe the locations of the qualitative biology and SOD sampling stations. Sediment samples collected for SOD analyses iere brought back to NERL where in vitro analyses were performed using a bench model benthic respirometer. Table 14 is a tabulation of relevant laboratory data and the calculated SOD results. The SOD results are derived from the following equation: ( OiOf) (V ) SOD (grams oxygen/square meter/day) t (SA) ------- ii Where: 05. initial DO (mg/i) Of final DO (mg/i) V vohune of contained water (cubic meters) t time (days) SA = surface area of the sediment (square meters) A qualitative survey of benthic invertebrates was performed on sludges from all nine stations. Table 15 shows the number and dominant kinds of invertebrates present at each station. Table 16 further breaks the kinds of invertebrates found at each station into family and species. DISCUSSION The Ashuelot River was sampled during a period when the flow at Hinsdale was about twice the design (seven day low flow with ten percent occurence) flow of 44.6 cfs. The river dissolved oxygen concentration below the Keene Wastewater Treatment Facility (WWTF) discharge dropped markedly below the 75 percent saturation water quality standard limit (see Figure 11). This saturation deficit lasted until the dam at Homestead Woolen in West Swanzey. Immediately beiow the dam the DO saturation was above 75 percent. ilowever, wastes from Homestead again lowered the DO below 75 percent saturation until some point between the Coombs Covered Bridge in Winchester (ASHRO6) and the washed out bridge opposite the Winchester 1aterworks (ASHRO7). Below the A.C. Lawrence Bridge, winchester (ASHRO8), the river is classified C which requires a niinimuui of 5 mg/i DO at all times. Figure 12 shows that the average DO was lower than 5 mg/i at the Ashuelot Bridge Station, (AS}1R09). This was the first station sampled below the A.C. Lawrence discharge. The ------- 12 average DO stays above 5 mg/i the remainder of the river although there are four major paper mills discharging in this reach. The rapid drop in elevation provides sufficient turbiance to permit reacration to counteract the BOD discharge to the river in this reach. Phosphorus concentrations were plotted (Figure 13) to better illustrate the effects of waste discharges on the river. The phosphorus concentration increases greatly below the Keene WWTF discharge then drops off rapidly until the confluence with the South Branch. The phosphorus concentration increases again and then falls off, remaining fairly constant at Stations 68. Homestead Woolen had no significant effect on the phosphorus concentration. Phosphorus s mples werent collected below the A. C. Lawrence discharge which was high in phosphorus (7.38 mg/i). New Hampshire has no numerical phosphorus concentration water quality limit. Average ammonia nitrogen concentrations increase drastically below the Keene WWTF discharge; 0.05 to 3.7 mgll respectively. After that the ammonia nitrogen dropped steadily until the Homestead Dam where a rapid drop occurred. Homestead Woolen discharges contained the greatest amount of ammonia nitrogen of the industries sampled, but this amount did not prevent the river concentration from decreasin . The State of New Hampshire has no arimionia nitrogen concentration limits. River diurnal dissolved oxygen (DO) variation at the Route 10 Bridge near Westport (Figure 6) varied from approximately 2.6 to 4.6 mg/i following a classical DO curve where algae is present in significant amounts. The river DO at Swanzey Station exhibited no diurnal variation, only a steady downward trend (Figure 5). There was no indication the ------- 13 DO probe had malfunctioned, but the steady downward trend indicates it might have fouled. The grab sample DOs taken 0.6 kilometers below Swanzey Station one day before the probe was installed showed a high of 3.5 mg/i and a low of 2.2 mg/i. The river at AC. Lawrence (Figure 7) exhibited a fairly random DO with no diurnal variation. Zinc, copper, and chromium concentrations in the river below suspected heavy metals dischargers were higher than one might expect background levels to be, but not sufficiently high to significantly affect biological activity. Figure 14 shows the SOD profile for the Ashuelot River from Keene, New Hampshire, to Hinsdaie, New Hampshire. The impact of the municipal waste discharged by the City of Keene on the Sediment Oxygen Demand at ASO1B is drastic, particularly when contrasted to the upstream control. SOD rates of similar magnitude are shown in ASO2B and ASO3B. As noted in Table 14, the sediment substrate is of similar composition for these two stations. Station ASO6B is downstream of a tannery, and the river bottom, primarily sand, was observed to be overlain with a black oozy substance. This black material apparently has a low oxygen demand as is indicated in both Table 14 and Figure 14. At Station ASO8B a significant increase in SOD is noted. The benthic uptake rate of 2.88 gin 02/m 2 /day is in general agreement with other rates we have recorded which have been related to paper making or paper processing wastes. ASO8B is approximately 0.32 kilometers (0.2 miles) upstream of Hinsdale Products waste discharge. From a total of 55 different kinds of Benthos collected from the 45.8 river kilometers (28.5 miles) surveyed, 23 kinds or 41.8 percent were collected at the clean water control Station ASOOC whic is upstream ------- 14 of the Keene WWTF and devoid of any known industrial..or municipal waste. The clean substrate composed of gravel and sand contained the pollution intolerant stoneflies, mayf lies, and caddisf lies among the 23 kinds living in and on this substrate. Downstream of the Keene WWTF discharge (Station ASO1B) the river is grossly polluted for a distance of approximately three miles to Station ASO2B at Swanzey Station. The substrate is covered with sewage sludge and supported only the pollution tolerant sludgeworrn (Tubiflcidae) which was 1.8 percent of the total kinds found in the river. For the next 22.2 kilometers (13.8 miles) downstream from Station ASO3B in West Swanzey to Station-ASO7B in Ashuelot intermediate to moderatley clean water quality was determined by the 9 14 kinds of bottom organisms (16.3 percent -25.4 percent of the total kinds) inhabiting the substrata. Paper waste sludge from Paper Service, Ashuelot Paper, and G.E. Robertson covered the bottom at Station ASO8B in Hinsdale, New Hampshire, and eliminated all forms of bottom life except the pollution tolerant sludgeworci. Station ASO8B is grossly polluted. ------- TABLE 1 f(C0tv (uD D U ( CL SSIFiCATIOUS VATER QUAlITY STAUDAROS NY.Fc(0. U(I%J CC, or NTAC-0 i -. i hc .cv.,r provides r. st effectl c controL 2. or h1AC-Ol -- i .hichcver provides rost effective control. 1 - Class A Class B Class C Class D Potentially acceptab!e for public water supply after dlsinI ction. No discharge of sewage or other wastes. (Quality uniformly excellent). Acceptable for bathing and recreation, fish habitat and public water supply after adequate treacrcnt. No disposal oi sc.. c or wastcs unless adcq..satcly treated. (High ae tpieti valuc). Acceptable for recreational boating, fishing, and ndustrai .atcr supply with or without trcacr nt depending on individual rcqurer :nts. (Third higheSt quality). Aesthetically acceptable. Suitable for certain indusir... purposcs, pob.er an. navigation. (lo est allowable quality rc less than 1/2 nile ;n entire sate). (,so1ved Oxygen Not less than 75 Sat. Hot less than 75 Sat. Not less than 5 Not less than 2 ColUorrn &accerla e 100 ml H t wore than 50 hot wore than 2 0 In fresh water. Nat wore than 70 I .PN in salt or brackish water. Not specified Not specified . Sub! as rotenL ially toxic Natural 6.5 - 8.0 . 6.0 8.5 Not specified None . Not In toxic concentrations or cowbinations. Not in toxic concentrations or conbnal ions, Not ir. toicc concentrations or co b.nat . s. Sludge deposits Worse Not objectionable kinds or a r 0t n 1t 5. Hot objectiorable kinds or awo unts. Not objectionable kinds or awounts. Cii and Grease . None None . . Not objectionable kinds or anour,ts. Not of unreascsablc kind, quantity or duration. Color Not to exceed 15 units, . Not In objectionable atrounts. Not In objectionable ar.ount . .. . :ot of unreaconable kind, 4 iantity or duration. Iufbidity Slid-., Odors and Surfrcc.Fiaa ting Solids Not to cicced 5 unIts, . None hot to exceed 10 units in trout w3ter. 1 ot to c cccd 25 units in nors trout water, None Not to exceed 10 uni Is in trout water. I t to x eed 25 units in non- trout water. - q hot In object Io i-ab ic kInds or aroi .nLs. Not of unrcason,ole kind, quantity or duration. Hot of unrcan b kind, quantity or duration. Ho rtlficlei rise S )t i lie waters In each cIossificatic,n ,h.a1l satisfy all provisions c i i all lo cr classifications. Shall not e7CC.:d sor. 2. NI(F D N itc.n Il n ,shl re Fish arid Car Dcpart nt ------- TABLE 2 RELATIVE ORDER OF SIGNIFICANT LOCATIONS Kilometers Miles 54.9 34.1 Surry Mountain Dam 48.6 30.2 (ASOOc) 44.1 27.4 Dam just above West Street Bridge 43.9 27.3 West Street Bridge, Keene 43.1 26.8 Winchester Bridge, Keene 62.5 26.4 Route 10 Bridge below Keene 41.7 25.9 Private bridge, Keene (ASHRO1) 41.5 25.8 Keene WWTF discharge, Otter Brook confluence (ASH fO1) 41.2 25.6 ASO1B 38.0 23.6 Just above South Branch confluence (ASHRO2) 37.0 23.0 Bridge at Swanzey Station (ASO2B) 36.4 22.6 Railroad Bridge below Swanzey Station (ASHRO3) 30.7 19.1 Bridge in West Swanzey (ASHRO4), (ASO3B) 30.7 19.1 Dam at Homestead Woolen 30.6 19.0 Homestead Woolen, West Swanzey (ASHIO2) 26.7 16.6 Slate Bridge, Westport (ASHRO5), (ASO4B) 25.1 15.6 Route 10 Bridge, near Westport 24.0 14.9 Twoomy Covered Bridge, Winchester (ASHRO6) 19.2 11.9 (ASO5B) 17.9 11.1 Washed out bridge near Uinchester Waterworks (ASHRO7) 14.3 8.9 Bridge at A.C. Lawrence (ASHRO8) 14.2 8.8 A.C. Lawrence (ASHIO3) 14.2 8.8 Jusbelow A.C. La irence discharge (ASO6B) 13.7 8.5 Dam in Winchester 13.4 8.3 Bridge in Winchester 10.6 6.6 Bridge at Junction of Routes 10, 119, and 78, Winchester 8.5 5.3 Bridge at Ashuelot (ASHRO9), (ASO7B) 6.6 4.1 Bridge at Paper Service (ASHR1O) 6.4 4.0 Dam at Paper Service 6.4 4.0 Paper Service (ASHIO4) 5.3 3.3 Dam at Ashuelot Paper 5.2 :3.2 A.shuelot Paper (ASHIO5) 5.2 3.2 Bridge at Ashuelot Paper 3.9 2.4 Canal Company Darn 3.1 1.9 G.E. Robertson (ASHIOG) 2.7 1.7 Depot Street Bridge (ASO8B) 2.6 1.6 Dam at Hinsdale Products 2.4 1.5 Hinsdale Products (ASHIO7) 2.1 1.3 Route 63 Bridge 0.2 0.1 Railroad Bridge (ASHIU1) 0.0 0.0 Confluence with Connecticut River ------- TABLE 3 ABBREVIATIONS USED IN THE REPORT Temp pH DO Comp MCD cMs BOD BOD 5 BOO 15 Total P NH 3 N0 2 N0 3 Residue Total Total Dissolved Total Volatile Diψsolved _Voiatile Total Fixed Dissolved Fixed Metals DESCRIPTION temperature of sample field pH dissolved oxygen composite sample million gallons per day cubic meters per second biochemical oxygen demand incubated at 200C BOD after 5 days BOO after 15 days total phosphorus ammonia nitrogen combined nitritenitrate nitrogen solids total amount of solids total nonfilterable residue total organic residue filterable organic residue total inorganic residue filterable inorganic residue total amount of a particular metal present chromium UNITS OF MEASURE degrees centigrade (°C) standard units (SU) milligrams per liter mg / 1 million gallons per day cubic meters per second mgi]. as phosphorus as nitrogen (N) as N mg / 1 mg/i. mg/i mg/i mg/i mg / 1 parts per million (ppm) ppm ppm AZBREVIATION mg/i mg / 1 mg / 1 ing / 1 mg / 1 mg/i Cr Mn manganese ------- TABLE 3 ABBREVIATIONS USED IN THE REPORT (CONT.) ABBREVIATION DESCRIPTION UNITS OF MEASURE Fe iron ppm Cu copper ppm Zn zinc ppm Coliform Bacteria coliforni bacteria number per one hundred milliliters of sample Total total coliform bacteria number per one hundred milliliters of sample Fecal fecal coliform bacteria number per one hundred milliliters of sample Symbols preceding a report value denote the following: J = estimated, value not accurate K = less than L = greater than R results not reported = no sample collected S not present in measureable amounts ------- River Kilometer ( Mile ) 43.9 (27.3) 43.]. (26.8) 42.5 (26.4) 37.0 (23.0) 30.7 (19.1) 26.7 (16.6) 23.1 (15.6) 13.4 (8.3) Depth Meters (ft.) 0.38 . (1.25) 0.79 (2.64) 0.43 (1.42) 0.801 (2.67) 1.56 (5.19) 1.39 (4.64) 0.701 (2.35 ) 0.48 (1.60) (3.46) TABLE 4 ASHUELOT RIVER CROSS SECTIONS AJGUST 1, 19Z4 Location West Street Bridge Keene, NH Wincilester:St!eet Bridge, Keene, NH Route 10 Bridge I:iimediately Below Keene, NH Swanzey Station H Bridge West Swanzey NH Bridge Slate Bridge Westport, Nil Route 10 Bridge near Westport, NH Winchegter, NH Bridge Bridge at Junction of Routes 10, 119, and 78 Winchester, NH River Average Width Meters (ft. ) ________ 9.0 (30) 22.5 (75) 15 3 (51) 39.0 (130) 40.5 (135) 27 0 (90) 23.4 (78) 18.0 (60) Remarks Smooth flowing. Dam 0.1 mile upstream. Smooth flowing upstream and downstream. Smooth flowing upstream and downstream. Smooth flowing upstream and downstream. Smooth flowing upstream. Dam immediately downstream. Below dam some rapids. Smooth flowing upstream and downstream. Smooth flowing upstream and downstream. Smooth flowing. Island in middle of river..dftides it into two channe1 each about 9 meters. 10.6 36.0 (6.6) (120) 104 Smooth flowing. ------- TABLE 4 ASflJELOT RIVER CROSS SECTIONS AUGUST 1, 1974 (CONT.) River Average River Width Depth Kilometer Meters. Meters Location Miley , ( ft.) ( ft.) Remarks Bridg2 at Ashuelot, NH 3.5 40.5 . 0.53 Past flowing and rocky. (5.3) (135) (1.77) Bridge at Paper Service 6.6 24.0 Smooth flowing upstream and downstream. Dam 0.16 kilometers inchester, NH (4.1) (80) (3.04) downstream. Bridge at Ashuelot Paper 5.1 18.0 044 Rapids above and below bridge. Dam 0.16 kilometers upstream. Winchester, NH (3.2) (60) (1.46) epot Street Bridge 2.7 39.0 0.67 Smooth flowing upstream and downstream. Dam 0.16 kilometers Eiinsdale, NH (1.7) - (130) (2.23) below. oute 63 Bridge 2,1 28.5 0.70 River smooth flowing at bridge. Dam and rapids upstream. tinsdale, NH (1.3) (95) (2.33) Big rocks and rapids downstream. !OTE: Average flow at Surry Mountain jage 0.37 cms (13 cfs). Average flow at Hinsdale gage 2.25 cms (79 cfs). ------- TABLE 5 JISHUELOT RIVER TIME OF TRAVEL* Kilometers Average (Miles) Velocity Reach Time Cumulative Length meters per second of Travel Time of Travel Reach of (feet oer second) (in hours) (in hours) From To Reach May JulyAug. _ j .y tJ Aug y Juiv-Auη . West Street, Keene WWTF 2.25 0.045 Keene, NH Discharge (1.4) (0.15) 14 14.0 Mathew Road Covered Bridge 6.9 0.27 0.045 Swanzey Station (4.3) (0.9) (0.15) 7.0 41.5 7.0 41.5 Homestead Woolen 13.2 0.036 (8.2) (0.12) 96.5 96.5 Nathew Road Ashuelot Paper 31.8 0.51 Covered Bridge Foot Bridge (19.8) (1.7) 17 24.0 Swanzey Station 1k tead Woolen Rte. 10 Bridge, 5.6 0.036 near Westport (3.5) (0.12) 46 142.5 Rte 10 Bridge, A. C. Lawrence 10.8 0.045 near Westport (6.7) (0.15) 67 209.5 A. C. Lawrence Paper Services 8.2 0.045 (5.1) (0.15) 52 261.5 Paper Services Ashuelot Paper 1.0 0.147 (0.6) (0.49) 1.8 263.3 Ashuelot Paper C. E. Robertson 2.1 0.336 - via Canal (1.3) (1.12) 1.7 265.0 R. R. Bridge 5.0 1.05 near Corni. R. (3.1) (3.5) 1.3 25.3 C. E. Robertson Rte, 63 Bridge, 1.0 0.054 Hinsdale (0.6) (0.18) 5 270.0 Rte. 63 Bridge, R. R. Bridge nea 1.9 0.264 Hinsdale Conn. R. (1.2) P.88) 5 275 West Street R. R. Bridge 43.9 0.47 0.045 Keene, ffl near Conn. R. 7.2) 1 L.58) .l5) 25.3 275 25.3 275 *Flows in the river during the studies were: Nay July-Auguse Surry Mountain Cage 14.7 cns (520 cfs) 0.4 cnis (14 cf ) llinsdale Cage 104.8 ems (3700 cfs) 2.5 ems (90 cfs) ------- 74/08/06 AZHRO1 41.7 (25.9) 74/08/06 ASHRO2 38.0 (23.6) 74/03/06 ASRRO3 36.li (22.6) 74/08/06 ASRRO4 30.7 (19.1) 74/08/07 AS RO5 26.7 (16.6) 74/08/07 ASURO6 24.C (14.9) 74/08/07 ASERO7 17. (11.1) 74/08/07 ASHRO8 14.3 (8.9) 74/08/08 ASHRO9 8.5 (5.3) 74/08/08 ASURLO 6.6 (4.1) 74/08/08 ASHRI.1 0.2 (0.1) Private Eridge Above Keene 42 55 10 72 16 53 WWTF Discharge Just Above South Branch 42 53 20 72 14 04 Confluence R. R. Bridge Beloi. S anzcy 42 53 05 72 17 36 Station Bridge at 42 52 16 72 ].9 42 West Swanzey Slate Bridge 42 51 0]. 72 20 28 Westport Coombc Bridge 42 50 0]. 72 21 42 near Westport Washed out Bridge in 42 48 06 72 22 28 Winchester Bridge at 42 46 56 72 23 04 A. C. Lawrence Bridge in 42 46 36 72 25 29 Ashuelot Bridge Just Above Paper 42 47 15 72 26 28 Service R. R. BrLdge Just Above CT TABLE 6 RIVER STATION LOCATIONS, DATES S LED, NUMBER OF SM LES COLLECTED, A.\D TYPES 01? ANft.LYSI ! PERFOBNCD Station Kilonetor Location Station Nu.- ber Of Crab Sarn,1 s Collected Date Nw ber ( Mi.le) Latitufle itude - . Dcneription Field Mensurenants Aniόyses !orned At NF.RL ° ° pH Temp. DO LOD Solids NH ? N0 NO Total P acti. ctals 2 3 3 .3 3 3 3 1 3 3 2 3 3 3 3 3 3 1. 3 3 2 3 3 3 3 3 3 1 3 0 2 3 3 3 3 3 3 1 3 0 3. 3 3 3 3 2 2 1 3 3 3 3 3 3 3 2 2 1 3 0 3 3 3 3 3 2 2 1 2 0 3 3 3 3 3 2 2 1 3 0 3 3 3 3 3 3 3 0 3 3 3 3 3 3 3 3 3 0 3 0 42 46 23 72 29 49 1U.vcr Conf1ue e 3 3 3 3 3 3 3 3 3 ------- TADLE 7 ASRUELOT RIVER SURVEY ASHUELOT RIVER FIELD A D LABORATORY ANALYSES RESULTS - T±ne BOD Total Nitrogen Residue ( g/l) of Ternp. pH DO (ng/1) P rt /l as N Total Total Dissolved Total Dissolved St ttion Date Col1ect on °C EU inpjl 5 15 ( m /1) N1I - N0 N9 3 Total Dissolved Volatile Volatile F1:ced F x d ASHRO1 74/08/06 0845 20 6.3 6.1 KS 1 (3 0.08 0.13 279 69 228 27 52 42 1040 23 6.6 K .5 gj 0.03 0.13 101 77 30 21 70 56 1145 24 6.8 6.9 KS KS 0.54 0.02 0.1]. 76 74 25 29 51 46 ASIIRO2 74103/06 0815 20 5.4 1.7 24 34 4.00 0.02 169 142 79 44 90 98 1105 23 4.4 30 34 3.64 0.02 216 147 77 52 139 95 1115 23 7.0 7.2 24 30 1.82 3.46 0.02 147 128 48 38 99 90 AS}iRO3 74/08/06 0745 22 5.4 2.2 1(5 1(5 0.74 0.10 89 91 37 44 53 48 1050 22 6.8 3.5 1(5 6: 0.34 0.65 0.10 81 80 18 29 63 51 1125 24 2.6 1(5 1(5 0.68 0.06 83 90 27 19 56 71 ASHRO4 74/08/06 0710 22 5.9 3.5 5 5 ).72 0.18 38 63 62 39 23 24 1025 24 6.8 6.6 6 8 0.62 0.69 1.26 92 90 1 26 62 64 1145 26 9.5 20 19 0.35 0.05 101 84 42 25 60 58 ASHRO5 74/08/07 0645 22 .5.5 4.5 ic5 1( 5 90 87 24 24 65 63 0905 23 6:0 4.9 1(5 5 0.38 .10.50 0.49 95 87 25 30 69 56 24 6.8 5.5 1(5 5 .10.34 0.48 86 84 36 40 50 44 AS LR06 74/03/07 07:0 22 6.0 4.8 6 7 96 32 26 17 70 64 0930 23 6.0 5.5 1(5 7 0.28 .10.09 0.66 93 83 26 55 72 33 1145 22 6.4 6.8 1(5 113 .10.09 0.65 L113 88 P. 17 113 68 AS1 07 74/08/07 0745 22 6.0 9.]. 6 10 101 78 41 22 60 57 1000 23 6.7 9.8 1(5 0.37 .10.03 0.38 122 79 33 2]. 89 58 1215 24 6.8 10.8 5 9 .10.02 0.37 123 68 45 17 78 51 ASHROS 74/08/07 0820 23 6.7 9.0 6 9 100 83. 34 18 66 62 1030 24 7.3 10.0 1( 5 10 0.29 .10.02 0.40 112 82 39 19 72 64 1245 24 7.0 12.9 4 8 1(0.01 0.34 83 85 39 50 44 35 ------- TABLE 7 ASHUEL.OT RIVER FIELD AND LABORATORY ANALYSES RESULTS (COST.) Time SOD Total Nitrogen Residue (mg/i) of Temp. pE DO (mg/i) P tng/1 .ns N Total To:ai Dissolvcd Total Discolvad Sta: on Da:e Collection OC SU m /1 5 15 ( mg/i) NH O2NO Total Dis o1ved Volatile Vola t1e F ed Fixed ASHRO9 74/OS/OS 0715 21 5.9 3.8 28 44 .10.14 .0.21 177 171 26 29 151 162 0910 21 6.3 4.6 6 10 JO.08 0.20 195 200 18 96 177 .105 1105 23 6.5 5.7 5 6 .10.07 0.30 218 220 32 35 186 iS !. ASF.R10 74/08/08 0740 21 6.4 7.0 6 10 JO.O9 0.24 127 129 21 40 106 89 0930 22 6.5 6.7 KS KS .10.10 0.27 222 .1142 79 R 144 R 1125 23 6.3 7.8 KS KS JO.06 0.27 153 175 27 22 126 152 ASF.R11. 74/08/08 0825 21 6.4 4.9 17 32 .10.01 4.40 286 188 95 38 191 150 1015 23 6.8 5.1 12 26 .10.03 0.04 258 182 79 37 179 145 1200 24 . 7.0 3.2 8 14 .10.01 0.06 193 188 36 39 157 149 ------- TABLI 71 ASHUELOT RIVER. FIELD AND LABORATORY ANALYSES RESULTS (CONT.) Colifor Bacteria per 100 ml Metals (ppm)* Station Time Total Fecal Cr Mx Fe Cu Zn ASHRO1 0845 .16,000 120 0.10 0.05 0.11 0.16 0.04 1040 22,000 510 .0.10 0.05 0.5k 0.12 0. 5 1145 21,000 200 S 0.15 0.13 0.08 0.04 ASHRO2 0815 L1,000,000 L100,000 - S 0.10 3.60 0.16 0.04 1105 L1,0 00,000 L100,000 j S 0.10 2.90 0.20 0.04 1115 ti .ooo,ooo L100,000 S 0.15 4.20 0.20 0.04 ASHR O3 0745 1,300,000 .60,000 1050 1,200,000 38,000 1125 1,200,000 50,000 ASH.R04 0710 88,000 6,100 1025 67,000 5,500 1145 85,000 2,600 ASHRO5 0645 54,000 300 0.19 0.90 2.20 0.13 0.32 0905 38,000 300 0.25 1.60 2.20 0.09 0.21 1120 28,000 400 0.11 0.01 1.90 0.11 0.25 ASHRO6 0710 70,000 400 0930 73,000 200 1145 71,000 100 ASHRO7 0745 75,100 L100 1000 480,000 500 1215 3 0,00O 200 AZ 0S 0820 180,000 1,100 1030 44,000 1Q00 1245 33,000 700 ASHRO9 0715 120,000 590 IS is] 0.74 0.15 0.21 0910 160,000 1,400 0.13 0.32 0.69 0.07 0.14 1105 160,000 430. 0.26 0.16 0.74 0.05 0.21 ------- TABLE 7 ASHUELOT RIVER FIELD AND LABORATORY ANALYSES RESULTS (CaNT.) Coliform Bacteria per 100 ml Metals (ppm)* Station Tinte Total Fecal Cr Ma Fe Cu Zn ASHR1O 0740 66,000 420 0930 83,000 380 1125 83,000 620 ASHR11 0825 L3,000,000 240 1015 2,000,000 90,000 1200 2,300,000 20,000 *NOTE: Metals samples were collected at all river stations. However, because the metals concentrations at river stations immediately below the suspected heavy metal discharges were low, (ASIIRO2, ASHRO5, and ASHRO9), analyses were not performed for the other stations. ------- TABLE 8 ASHUELOT RIVER DAMS LOCATION AND EFFECT ON REAERATION August 9, 1974 River 1a1o eter Description ( Pf 1 ) Dissolved Oxygen Concentration (ng/l ) Net Above Ee low increase Darn at HotnesteadWoolen 30.7 5.8 7.4 1.6 West Swanzey, NH Z19.1) Darn at Paper Service 6.4 6.4 6.9 0.5 Winchester, N H (4.0) Darn at Ashuelot Paper r 7.0 7.7 0.7 Winchester, NH (3.3) Darn above Hlnsdale - 2.6 - Products, Hinsdale, NH (1.6) - K5.O 7.4 2.4 ------- TABLE 9 MUNICIPAL AND INDUSTRIAL WASTEWATEk SAMPLING LOCATIONS, DATES SAMPLED, NUNDER OF SAMPLES COLLECTED, AND TYPES OF ANALYSES PER 0RNED Number of Samples Collected Crab/Composite River Location Field - Date Station Kilometer Latitude Longitude Measurements Analysis Performed at NERL S pled Number ( :i1c) 0 0 Description pH Thnp. BOD Solids NH,N NO 3 -NO 3 Total P Bacti Metals 74/OS/06 ASI 1Oi. 41.5 42 55 07 72 16 49 City of Keene 63/0 67/0 0/3 0/3 0/3 0/3 0/2 3/0 0/3 to (25.3) VFF Discharge 74/OS/OS Just Below Otter Brook Confluence 74/08/07 ASMIO2 30.6 42 52 11 92 19 42 Homestead Uoolen 610 6/0 2/1. 0/1 0/1 0/i. 0/1 2/0 0/3. (19.0) Mi ii Discharge West S anzey, NH 74/08/07 ASEIO3 14.2 42 46 54 72 23 04 A.C. Lawrence 2/0 4/0 2/1. 0/1 0/3. 0/1 0/1 2/0 0/1 (8.8) Leather Co. Discharge Winchester, NH 74/08/08 ASHIO4 6.4 42 47 17 72 26 44 Paper Service Co. 5/0 2/0 2/1 0/1 013. 0/1 0/0 2/0 0/0 (4.0) Discharge Winchester, NH 74/08/08 ASHIO5 5.3 42 47 20 72 27 30 Ashueloc Paper 6/0 4/0 2/3. 0/1. 0/ ]. 0/1 0/0 2/0 0/0 (3.3) .. . Discharge Iir.chester, NH 74/03/08 ASHIO6 3.0 42 47 15 72 28 45 C E. Robertson & Co. 2/0 /0 2/]. 0/1 0/1 0/]. 0/0 2/0 0/0 (1.9) Discharge Hinsdaie, NH 74f0S/08 ASHIQ7 2.4 42 47 10 72 29 12 I!1n da1 Products 5/0 1/0 2/1 0/]. 0/1 0/1 0/0 2/0 (1.5) Discharge }I nsda1e, N E ------- TABLE 10 ASHUELOT RIVER SURVEY INDUSTRIAL WASTE F I ELD MEASUREMENTS Station Date Time pH Temp. Yr./Mo./Day ( Hours) ( SU ) _____ ASHIO2 74/08/07 0700 7.0 22 0800 9 ,2 13 0900 7.3 14 1000 7.1 15 1100 4.9 28 1200 6.2 26 ASHIO3 74/08/07 0900 4.7 29 1000 31 1100 30 1200 5.3 32 AS}1 104 74/08/08 0915 8.3 1000 8.0 1030 7.9 1100 7.8 1120 23 1200 7.9 23 ASHIO5 74/08/08 0700 7.3 33 0730 6.6 32 0830 6.7 32 0930 6.3 34 1030 5.8 1130 4.6 ASHIO6 74/08/08 0830 6.3 22 1045 6.5 24 ASHIO7 74/08/08 0805 10.5 24 0905 9.5 1005 9.8 1105 8.9 1205 10.2 ------- TABI.E 11 ASHUELOT RIVER SURVEY MUNICIPAL AND INDUSTRIAL WASTEWATER LABORATORY ANALYSES RESULTS Avg. Flow Nitrogen Residue (mg/i) Collection Rate BOB Total P mg/i as N . Total Total I issolved Total Dissolved Statio t Date Interval . ems mg/i mg/i NH 3 N0 2 N0 3 Total Di soived Voiatiie Volatile FIred FIxed ( MCD) _ 5 20 74/OS/06 Co:p 0.107 124 186 R . 317.03 0.06 S A N P L C L 0 S T (38) 74/08/07 Conp 0.107 290 4S0 7.13 318.20 0.06 409 267 204 80 205 187 (3.8) 74/08/08 Comp 0.093 350 430 7.38 317.80 0.95 392 273 168 81 224 192 (3.3) ASMIO2 74/03/07 0830 44 70 1100 393 540 Conp 0.005 (0.208) 130 160 0.87 343.00 1.17 532 521 257 195 325 326 ASRIO3 74/08/07 0900 650 1050 1200 136 142 Coap 0.043 (1.54) 620 760 7.38 Jll.O0 0.92 13100 12000 1090 500 12000 11000 AsHIO4 74/08/08 0530 250 550 . 1030 460 600 Cc ip 0.045 (1.58) 450 590 30.15 0.18 1220 396 686 124 539 272 ASI I05 74/08/08 0730 400 696 1130 630 730 Co p 0.017, (O.60) 510 690 JO.75 0.24 1640 554 908 306 732 ASHIO6* 74/08/08 0S30 40 190 1045 X i. 80 Co p 0.568 (20.04) 20 250 30.04 0.12 189 148 49 36 140 112 ASHIO7 74/08/08 0805 740 1240 1105 64 772 Conp 0.568 (1.32) 520 760 30.23 0.09 1750 1050 1000 455 746 598 *Sce C. E. Robertson Mill. description for explanation of relatively high flows and low concentrations. ------- TABLES 1]. ASHUELOT RIVER SURVEY MUNICIPAL AND INDUSTRIAL WASTEWATER LABORATORY ANALYSES RESULTS (CONT.) Collection Date Interval ASHIO2 74/08/07 0830 1100 74/08/07 0900 1200 Coliform Bacteria per 100 ml Total Fecal 27,000 3.5 31,000 Metals (ppm) Cr Mn Fe Cu Zn As 170 20 S 2.1 110 2,0 0.16 2.8 0.11 0.23 KO.04 S ____ ____ ____ Station AS t0l ASHIO3 0.5 0.2 KO 5 0.2 0.3 KO. 15 0.44 2.2 2.]. 2.7 0.24 0.47 0.50 ASHIO4 74/08/08 0,30 0.44 0.35 0.05 0.05 0.07 74/08/06 74/08/07 74/08/08 0630 Comp 1030 Comp 1030 Comp L ] .O,000,000 82,000,000 67,000,000 L1,000,000 2.1000000 31,000,000 -. 180,000 290,000 110,000 130,000 0830 1030 L4,000,000 L5,000,000 10,000 7,000 0730 1130 1,300,000 48,000 28,000 1,000 0830 1045 2,300,000 2,000,000 400 800 0805 1105 160,000 1,500,000 200 7,000 0.24 KO. 1 S ASHIO5 74/08/08 S S ASHIO6 74/08/08 A 511 107 74/08/08 ------- TABLE 12 MUNICIPAL WASTE FIELD HEASUREHENTS Time Temperature pH Tizue. Temperature pH ( Hours) °C SU ( Hours) °C SU 74/08/06 74/08/07 0630 19 2030 22 6.7 0730 19 6.2 2130 22 6.8 0830 21 6.1 2230 22 6.3 0930 21 6.3 2330 22 6.2 1030 21 6.5 1130 22 6.2 74/08/08 1230 22 6.3 1330 22 6.7 0030 20 6.2 1430 22 6.8 0130 2 0 6.3 1530 22 6.5 0230 20 6:r 1630 22 6.9 0330 20 6.1 1730 22 6.5 0430 20 6.2 1830 22 6.5 0530 20 6.1 1930 22 6.8 0630 21 6.1 2030 22 6.8 0730 20 6.1 2130 22 6.8 0830 20 6.3 2230 22 6.6 0930 21 6.2 2330 22 6.6 1030 21 6.5 1130 22 6.3 74/08/07 1230 22 6.3 1330 22 6.3 0030 22 6.5 1430 22 6.5 0130 22 6.6 1530 22 6.8 0230 20 6.5 1630 22 6.5 0330 20 6.5 1730 22 6.3 0430 20 6.5 1830 22 6.5 0530 20 6.5 1930 22 6.3 0630 20 6.2 2030 22 6.7 0730 20 6.2 2130 22 6.3 0830 20 6.5 2230 21 0930 20 6.3 2330 21 1030 21 6.3 1130 21 6.4 74/08/09 1230 22 6.5 1330 22 6.5 0030 20 1430 22 6.5 1530 22 6.3 1630 22 6.5 1730 22 6.7 1830 22 6.5 1930 22 6.5 ------- TABLE 13 SEDIMENT STATIONS SAMPLING LOCATIONS, DATES SAMPLED, NUNBER OF SAMPLES COLLECTED, AND TYPES OF ANALYSES PER ORNED River Location Sediment Date Station Kilometer (Mile) - Latitude U Longitude - Qualitative Description Biology Oxygen Demand Sampled 08/28/74 Number ASOOC 48.6 (30.2) Keene, Nil, above any known pollution 42 57 38 72 18 14 1 1 08/26/74 ASO1S 41.2 (25.6) 42 54 55 72 16 46 Keene, NH, below Keene WWTF discharge 1 1 08/26/74 , ASO2B 37.0 (23.0) 42 53 10 72 17 14 Swanzey Station by bridge 1 1 08/26/74 ASO3B 30.7 (19.1) 42 52 16 72 19 42 West Swanzey, NH, just above Homestead Woolen 1 1 08127/74 ASO4B 26.7 (16.6) 42 51 01 72 20 28 Westport, NH by Slate Bridge 1 0 08/27/74 ASO5B 19.2 (11.9) 42 48 19 72 22 03 Winchester, Nil, three miles below Toomey Covered Bridge 1 0 08/27/74 ASO6B 14.3 (8.8 42 46 46 72 23 05 Winchester, NH, below A.C. Lawrence discharge 1 1 08/27/74 ASO7B 8.5 (5.3) 42 46 36 72 25 29 Ashuelot, NH, by bridge 1 0 08/27/74 ASO8B 2.7 (1.7) 42 47 09 72 28 . 50 Hinsdale, NH, just above Hinsdale Products discharge 1 1 ------- TABLE 14 Sediment Oxygen Demand (SOD) Ashuelot River, N. H., August 1974 Station (I Lab I/ Test Date Temperature Initial Test Run SOD Ra 9 Sediment Start DO conc. Hours p,j O 2 /m /day Description ASO1B 36634 9/3/74 20°C ± 2°C 12.6 16.3 6.82 Sand, gravel overlain Keene, N.H. with sewage sludge AS0213 36635 9/4/74 20°C 2°C 7.4 21.0 1.47 Mud some sewage Swanzy Sta. N.H. odor AS03B 36636 915/74 20°C ± 2°C 13.8 22.0 1.52 Mud, sand, W. Swanzy, N.H. vegetation AS06B 36637 9/6/74 20°C + 2°C 8.0 24.0 1.06 Black ooze over sand Winchester, N.H. AS08B 36638 9/9/74 20°C ± 2°C 12.0 20.0 2.88 Fibrous paper Hinsdale, N.H. sludge ASOOC 36639 9/10/74 20°C ± 2°C 7.0 17.0 0.39 Sand and gravel Control Keene, N. H. ------- TARLE 15 Ashuelot River, New Nampshire Benthic Invertebrate Water Qua1i y Survey Aug., 1974 Station Location No. of Kinds Dominant Kinds Water Quality ASOOC Keene, N.H. 23 Mayfly, Caddis, Clean Stonefly ASO1B Keane, N.H. 1 Sludgeworm Polluted ASO2B Swanzy Sta., 1 Sludgeworm Polluted N.H. ASO3B West Swanzy, 9 Snail, Dragonfly Intermediate N. H. ASO4B Westport, N.H. 10 Snail, Dragonfly Intermediate ASO5B Winchester, N.H. 11 Nidgefly, Dragonfly Intermediate ASO6B Winchester, N.H. 14 Snail, Caddis Intermediate ASO7B Ashuelot, N.H. 14 Caddis, Mayfly, Moderately Clean Nidge ASO8B Hinsdale, N.H. 1 Sludgeworm Polluted ------- TABLE 16 Ashuelot River, flew Hampshire Qualitative Benthos Survey Aug. 1974 Organism Stations AS OOC O1B 02B 03B 043 OSB 06B 07B 083 Stoneflies (Plecoptera) Acroneuria abnormis x Mayf lies (Ephemeroptera) Isonychia sp. X Hexagenia bilineata X Stenonerna birdi X Stenonema sp. X Caddisf lies (Trichoptera) Leptocerus americanus x X Hydropsyche bettini x Hydropsyche simulans x Hydropsyche arinale X Hydropsyche sp . X Pvcnopsyche sp . x anna sp . X dchornyia . X Fishf lies (Neuroptera) Neohermes sp. x Chauliodes sp. x x Dragonflies (Odonata) Boyeria sp. x x Lanthus sp. X rion sp . x x x- Ischnura sp. X X X Flies (Diptera) Tabanus sp . x x Atherix variegata x Siniulium . a X X Anopheles sp . x x Pentaneura sp . X X Metrlocnemus sp . x Procladius sp . x Chironomous riparius x x x Chironomous sp . x Li (flemiptera) - hocerus sp . ------- TABLE 16 Ashuelot River, ! e i ilampshire(Cont.) Qualitative Benthos Survey Aug. 1974 Organism Stations AS OOC O1B 02B 03B 04B 05B 06B 07B 08B Beetles (Coleoptera) Stenelmis sp . x Clams (Pelecypoda). Musculium sp . x Pisidium sp. X Margaritifera sp . x Unidentified x x Snails (Gastropoda) Physa heteros ropha X Physa gyrina x Physa elliptica X Campeloma decisa X Amnicola limosa x Amnicola s x x Ilydrobia nickliniana x Ferrissia parallela X X X Helisoma trivolis X Helisoma anceps x x x x Crayfish (Decapoda) Pacifastacus leniusculus x x Planarian (Tricladida) Dugesia sp . x x x Sponge (Porif era) Spongilla sp. X Leech (Hirudinea) Placobdel]a parasitica Placobdella papillif era x llelobdella sp . x Dma anoculata - x Erpobdella triannulata x Unidentified x. Aquatic Worms (Oligochaeta) Tubificidae x x x x x opepoda (Copepods) ( Cyclops sp. ___________________________________________________ Total Kinds 23 1 1 9 10 U 14 14 x indicates species present ------- *Indjcates darns where reaeration was measured U) r U) U) . 0 - - 0 U) 1.J -S I _I c ) r4 id 4J c , 0 U) ow U) .i 1 I WCI) . UI-I rICfl a) .. C l) > 0 Cd 4 I U) I-I 0 0 cd C l) JJ U) U) E 0 IJ Cd OW r 1-I C l ) W (dO r4 bOrl U) GJO za Cd 4J ( d l-) . U -Id . . -WW UO.0 .rIU) I P4P.l I-i GJIJ U) CI)O v-I v-lcd ) . .sClJrl rj U)1U)CCl CdU)Cdv I 4J IJ - I1-i CdcClc dc d 1 -i i i CI 0) E . Cd - . E C l ) E ( d - EEEE U)CdcdCd v-I U) C d 165 (550) 150 (500) W 135 (450 Cd 120 CO . .,, IJG) (300) r-4 .1-I Cd 75 (250: 60 (200: (150) 1 1 1 S Note Cutoff channels, completed in Sept. 1954 and located approx. 500 above mouth of Ash Swamp Brook in Keene and in vicinity of mouth of south branch of Ashuelot River by approx. 3,800 River Miles shown on this sheet are based on original length of R. channel. lit IIlt 1 1 I I ! I I I I I I III hI IHIIII -ii I T i t ii III i I - I I I EEEEEEEH , 56.32 48.27 40.22 I I 32.18 24.14 16.09 8.04 0 (35) (30) (25) (20) (15) (10) (5) (0) II I Kilometers above Confluence with Connecticut River (Miles) - Figure 1. Hydraulic Profile of the Ashuelot River ------- FIcURC 2 ASHUCLOT } ]VLfl CROSS SLCTIO :S We.stSucet. Bridgc , } eene Winc c ster Street Bridge. Keene ____ !il 3 5 5.0 2.3 Route 10 F ric e Just F . lo : Keenc Bridge at St;anzey Station Bridge 3t t nt S nzey ____ 7.4 6.36.7 60 Th002M 60 (Wid ItFc i) ------- _ __ _L __ FIGURE 2 ASIWCLOT RiVER CI O S SECTIC S (C0 T.) ____ Slate Br1d , Wcst ort N 68 60 Rout.e 10 Bridge Eear Westport _ _____ Bridge at inchester ______ Bridge_lear Junction of Routes 10 , 119 and 78, Winchester i1I I8 ________ ____ Bridge at Ashuclot 3 7 2.4 __ -.- - I I t I I S 60 40 20 0 20 4d G0 ( Ld tIr-Fcct) ------- _ _L . . FICUIU 2 ASILUI:LOT RIVER CI CISS SLCTIO S (CONT.) Bridge at P [ er Service ____ T JEIJIitIIt/// 4 %. ______Bridge at Asli e1ot Paper Depot Street Bridge, Hinsdale Route_63 Bridge) llinsdale _______ IK II7 NOTE: All mc surcr ents in feet. Depth reasurc1 cnts sho m at 1/3 poinls. To convert feet to rnet .s, i ultipiy by 0.3. I I I S I ... 60 40 20 0 20 40... 60 (%Ijcltli._Fcct) ------- FICUI E 3- i ASHIJLLOT } 1VER TIME OF TRAVEL VS. FLOW WEST ST1 LLT BRIDGE, KEENE, TO SWANZEY STATION DIUDGE l_I.I-i I - . : . J -L Ht L L4 :1. ;,Hs, j:I. r.;t:.t. _ I I Ii PLHLJ F *tIEl±E j 1 ft .1 I:LL 1 iHi H i - I j: I - !_LhO ! - - T I , i 1 L 4Ji1i__Lj:LL 1 r L .LJ_L . __ t - .JJ IT:: . : _:_ i .. 1: . - . T iILt L 1 IH 1: _ I .L j ThTIH: Examp le The time . . o1 travel frot the E test StreeL I rid c - - 2 ---F- in Ycene to the - hrSc gc at anzey I- St tion at 250 cfs is 26 hours i Idi -H L,LfFftLLLL .L 10- 100 : JT Th+# =F 3 :Ji-fIIi±JL! f L: 1 IJLL - : i: iEI -b-- .1 :. . L T I T I ± J ±LLj : ; : :I L : : 11. ::J i -I . ____ ___ ___ I_ _ 1000 I I !- r1 i I J I+ t 4 rri I .i. I L ti - J i0000 Flow aL Ilirtsdale 1,age (cubic feet per second) 10oO 1OQ 10 1 0 C , -1 C.b r. .4 4J 0 ------- FIGURE 32 AS1IUELOT RIVER TiME OF TRAVEL VS. FLO J SWANZEI STATION BRIDCC TO THE RIDCE AT ASHUELOT PAP1 R -4-.- - - V. . .t I --I - . - r f; 4i, j _-: !1I f .L --Itr. - ------ - . . TfT . j::. r ______ - - Tr I i-.- rrr i 1F I JhUL -r__ I__ . . -2-- I - 1: LT F:LLI- 4- - - -i - - - -- I - - ii 1fir JT±H H ± 1 _ -1 1 --H-. I T :it± 100O Flow at Hlnsdale gage (cubic feet per second) 10000 : r -- ____ .i t t 1 t ___.j I_______________ i t ±i 1 . LJ.. .1 I - -I t . : I__ [ I :iji: - JJIIJL I -- 1 t . ; I I I I I__LILL - ITj I L t ::IL L LLL 1.1 -H-H- - - . T TF:. 1000 100 10 3- 0 -4 0 c -I I -I 4 0 0 . f- i _J L U - _ L ._J.-_ t ._ .4. .-- -, :1 :T T - H--H- - 4F - P] ±t 9 ti :, :: T. !. -I - - i1;: ft H L 1Tt 1 ItzttftV __r 1 i: ____- - I:- Ii::j ii - I Ll - - -: : 1.1 - :cj -4-TR! 1 r p r r t - - - HH 1 :i-E::k:: :. .:t 1. : .EI: : ::: -I 1- : - -ii [ 0 - T r t---:- I. I. P :::: 1:1 F - F ITL± LuiLiJJ 100 Jii - ------- FIGURE 3-3 ASIWELOT RIVER TI!IE OF TRAVEL VS. FLOW BRIDGE AT ASIIUELOT PAPER TO RR BRIDGE ABOVE CONNECTICUT RIVER CONFLUELICE 1000 100 10 1 I0 0 -4. 0 4.1 -1 0 ! .LLJ ...LJ L_L4 .. L :J !JjL . . .J.J L i4 L 3 __ _____ I L_i_I ...L .. 4 .._.. [ _j_.rT_.J__ ._.__: ._ .i ._ ._;J_:t:. ± .fL L I I I 4 L_ Z J LJ_ [ H T : t L_ J I LL -) I H - 1 - [ -4_j i_ it_J LLJ_L I LI LL L LL L 1 1 i L I L4 Lk :j : :T1:TFI :1: :; 1:: . .1 . : . : H Lt LJl_t L _ L_ L_L - - . I F - - - r I I L Ifli f If I .j ._LL L .i LJ_ f_! ._Il . _E_ _L, r:vJ: - i 1 T t ft aJ:t: : .!:: ±L J. : Ii ILIf I i Ii i _.:__ I A J Iii J J_1 1 ILL .4. .. E: ±: - H -F-- :J__LL:._ :i: ) . .. .. :_ .. . - - -- - r I I ___I p _I 1- 1 1 L t a .. _L I: - I r :! :i F!1 ;:I I tLT1I± TF i iiL [ i1 1 i I : i .L:.L. _LLLL _.LL [ i. 10 Ploy at I incda1e gage (cubic feet per sccond) 100O 10000 ------- FIGURE 34 L ASHUELOT RIVER LLI TI 1E OF TRAV1 L (r1 oW w.i sur D AT }IINSDALE G GE) t_ .: J - : I I I It_i - !...I.I.. .!- i 1 - . _ _I_. t. T ;,-, . .1 ! ! : .: : : : ; ; . _ l .:t I;. : ; .: I . i :! ; ; - .! t :._2 .:.-...:. .-.... f.: . . H L.. : -I-I I- -j t - r1 ! .;. : i -i -: - -i - I ; Ti J -_; - , t - - r I. 4 - . I; I I I. I - f -I - -. - .1 i i . Lr .L il-H 4 -i--. ; ; - I_i. . -. I -I .- t ._ . .. - 7 500 650 400 350 300 250 200 150 100 . LLt I i 4 - : 1 U, 0 0 I.e 4J 0. C) 4J c i . 1. - .1 I - -I ii. ;j i It : I FHj -. : . .L T :i - - :L . r .L .. r t ITT . _ / 7 II: rI/1_ ! N±i: . t : TJf / If VTIii I . _ . L ... . Lt__ 1 .._LI it - - II J: i . LI! t fjH LL :1 5 cfs ! i.j . 4± 1 7 _1. 11- .z. I. -I - . 1 r .I i L ..:_ -. - J_. Ii -r;. [ ZI ._ - I I 50 _ f_I - : idoo LLL L L LL J 32.1 24.1 16.0 80 (20) (15) (j; : ) D1 t3nce 3bove Coi t.ccticut rJver con 1uer ce k1J.oinc td (r 1 iiic s) 0 ------- I I ASHRO3 ASHRO4. ASHRO5 ASHRO 6 A SIIRO7 H IN SDALE ASHRO1 ASHRO2 *(Swanzey Station) (Route 10 Bridge) *Denotes Continuous Dissolved Oxygen Monitoring Stations ASUR1O ASUR 11 Figure 4. River Station Sampling Locations I ASHRO8* (A.c. ASF1R O9 ------- -4 -I 0 0 30 1 a E -4 r ,fl_ 1oX1OTOTH iNCH 400700 v Ό: e NCHCS a t , u.$. kcurr i. & f 5 CO. 1900 2400 0500 89-74 :: : -t.- : ±:L .tL ±H I -- --t-Th- - - I I j - J - 1 I ] L Th I t: TT - I - 1 L ±Li iA \ :: :: ::r: :: . LL ::.::. .:. .:::.: h:.:. :..: :: DO (u gI1) . ..: .I. : .:::: \/\ I I - Time hours) I I ... .._t I ..1I. I - . I I -1- II H .., I - - 1 I I I - - Tr I . . ...,.; ., : :-I ;I..., . I...I ... ..I I L_- .__. r DO (X Saturation) VS j . ,i. 1. ..!.:,:. .;._. . . .._:.r.,. ... . TiTne(1tours) .- ,-. I .1/ ;. - :.., . L : - Ti i r -1 I L. - I -- . :. H ... .L . - .: .. . . I 4 . ,...- .. . I . - I 7 1 4 I I - I I ,\ I - ., . ..- .... ,- ---- . :: -I -- - -. . - .. --- - -. 4I.... - I-. . . ,.. I-i-. . . .1 -.-, . - . - 4 - :_IT . n ,. . ., .1 i .,, . I t . ..i. ... . ,... .... ., f ........., ._... ..,. . .._ ...._.. .i....I I --r- , t e r Figure 5, Di8solved Oxygcn (DO) Xc suremonts at Swa.nzey Station - . -- ---- - - - . . ,_I_ . . -I. I 0 13 . 387 741800 2300 8874 0400 0900 1400 TD Z (Hours) 0900 ------- U TQ tOTOTH tNCH 400700 x to KCU U*. t ti Co. 5 4 0 2 1 0 50 -40 30 20 0 10 0 H:: Th.: . . . t ,: ; I : !HH; tI 1: ::: I - : ::, i -I- r :; :1 4; ; -H-f H :i :t L I r: t H H- rL ,: : .j -lH - t t -I hf ! iLiTi a L_ H I I 1 I lI D0(mgJ l) Lr Time (hours) -______ N /______ ., I . . . i , . . .,; :;: . . .I;f t; : ,t .. :: I :. .. ;: , . . :________, . i t ... . . : .. i . I . . . . I . , . : ,., , j. ! . . . ! .L . . : I I I i DO (Z Saturation) ) I $ / Time (hours) i . . .. .H j 1 , . I I I I .. ,. .. I I H.. . / I . .1 ... I I I .:. .:.:: I I Ii I lb I: I I H 1 4 Figure . Dissolved Oxygen (DO) Measuroments at Route 10 H: : Bridge near estport I j 1 . . , . I_ ! . .. 1230 S 7 7 700 2200 8874 0300 0300 Tfl!E (Hours) I .1. 1800 2300 8974 0400 0900 ------- to x to TO rii tr iet 40 0780 7 10 $Nt lI 9 P D1 IN V.$.&. KIWFPCb It1? CO. . . I It - - . . . ! I j r 1 4 1 I I I t1 :Ti l_i Ti ! I.1 : I i 1 f i i I .L., DO(tng/i .) .. .. . . . vs Time (hours) $ I ± :i1 hE I I II ._ I , .__ ._ ._ _ ._ . __ l: 1: . I .. . I I I J $t J 1 .L I I II fi II 4 . I I 1 . . . . . . . . . . .! 10- z 0 I.- C C., 0 7 110 100 I r4 0 I. 1 . . II .4- .L. j / i . . . \ . 1; DO (2 Saturation) vs. Time (hours) ._ .______ ______ .__ : ; -_ It - I I p .r L soL I I. . I .. 1030 1500 2000 0100 0600 1100 I: ... 1 . ., Figure 7. Dissolved Oxygen (DO) Neasurenents at A.C. La rence Co. Bridge (ASHRO8) I 1 1600 Ti c i.n 1 ours 2100 8974 0200 0700 1200 8774 8874 ------- H INSDALE L_-- H L SURRY Keene WWTF ASHMO1 Homestead Woolen ASHIO2 A.C. Lawrence ASHIO3 Paper Service ASHIO4 Ashuelot Paper ASHIO5 G.E. Robertson Co. ASHIO6 Hinsdale Products, ASHIO7 4 a.. T T n. . t- C rn.. n 1 4 n a T . a .. 4 , a r ------- 1 FIGURE 9 DIVISION OF FLOW AT C. E. ROBERTSON & CO fl NY, HINSDALE, NEW F NPSHIRE E. Robertson \\ \\ Canal _____ ---.----. 1 ___ Darn _________ II Bypass F - _______\ N., BypaGsed Water V Pro cess Water Water Wheel Samp1 ng Site z_ ___- Ashuc1 River __ ------- FIGURE 10 SEDIMENT OXYGEN DEMANDS AND BIOLOGY STATIONS SHUELOT RIVER AUGUST, 1974 Surry ASOOCSOD ASO 1B-SOD ASO2B-SOD ASO3B SOD AS 04 B Hinsda le 0 ASO5B ASO6BSOD ASO7B ASOSBSOD ------- % Saturation 10 X 10 TO THE! INCH 40 O7 O y t t C*4t .a t N .S.&. IUY CL I1S! CO. -- -- -H - - - H-T Tr T:1iT41 : .:i : - . - ... - 1;T.L RIVIR STATION (AS1R j 10 i i . .... . . --- - Percent Dissolved ________ T _____ Oxygen Saturation --, - - -- -- - -t- -f l2o River Station rLr A .c Avercge J Minimum I . r _*4.. : j _ j r7 i -.. :- I LL4 I - - - r - -: I : . .. I 1 . nAMT; hAM fl M fl f . ion 6O / I. I I I - L L _____ . 1 - ± I__ . :: : \ 1 - / - . -- - .T / 1 11: 1 -1 I . .L. r: r : F 1 r 1 I - - -: 1 ET I 40 ,-. ..- .... H... i /;J- .-..-v I . - .1.. I .::tt ::: i::L:: \ I. .. :\/.:. l :: . : j.:. - j;-: j. [ L - I .::J :L, : ::.:. - t. . .4. -I- - :. .4..; . .. L..:. .. . ... .. ! _ 1 L. . 1 I . . . .___. .__: __ _ _j. ____ J _______ Figi.iro 1].. Ashuelot River Dissolved Oxygen S .turat1on Profile 2T ________ - . - . -- 09 02 03 04 05 06 07 08 ------- to X 10 To THE INCH 4G 0750 .. 7 SC ID t!lCIIt S I Ictur rn. co Dissolved Oxygen (r gll) 14 13 12 11 10 9 8 7 6 4 3 2 1 : $ I sI I I I I I I , -, Dissolved Oc)gen (DO) Mg/i . LJ__ I VS I RL ie rStattoi T Maximuri H L. 4 Average H I I I I .!. . . 5? Minimum . ., 1 : I - : L : L . /.._ . . . . . ._ . J iT ±1 I . . . . : . . .: ::; .::: . . i : :. p . : . : I 1 1 I : 1 i I I I ii I . Figure 12. Ashuelot River Dissolved Oxygen Profile 2:: ;. I .. 1 . i L . , 1: 1 . . ......... I ? . . .. p. . r I I LH r . , . I . . . ... .s t j .: . . . 1 1 .. I . 01 02 03 04 05 06 07 RJVE. STATION (ASHR) 08 09 10 11 ------- i .j tO X 10 TO TH IP4CN 4G 0780 x to :NCI4 S I$ & co, Total P ( gf 1) ..i. _ Xt c __- _____ r i 7 - - f ::1J J Howe te d H Brt t tch :.... I I . .1T± 1 J - - , - - -- - -- -r1--,---- .. r- -- . . . 1_IT I - PHOSPHORUS tngIl) vs. RIVEi STATION I I : : .... I : ,1 f. . . : I I .1 : H .... -- -- J . : JL: .-.. .. ., . - -r- : .. : --- : 1.75 1.50 1.25 1.00 0.75 0.50 0.25 : . ::.. . . . , 1 i.,,. I : I. ±II: :h flz [ T I I I, ..tL I 1 I .:: .: ± I . . .. : :L:.; .. . I : _ r .i;; : , I : R : t :t .rL . 4-. ,. I . , ._i_ _..ii _ I ._. I 1 I L I L ... .. . ... . . ., : i i ..,.. J : ! F -- . I. . . . I ; -- - . .. .. _ . .. I . .. .I ... . . t . Iti : . . .; i I : . ..:. . i: 1 . . 1 . ...: I - .. I II .. . I . .. ,. . ..:..! . . 1, .. I I , . :.. ___ ______ ___ f __ .:.. LL . 1 ... ,-i --r- - c .1 t ______ ______ j ______ I . _ _,_______ _______ 1 .. . . . i . . p .._.....: 1 141 _:_. . ... ______ - ! f . I ki. . : .;: 1 . ::L i : . t. i::_: L :;4:L Figure 13 Ashuelot River Phosphorus Concentrations Ti ___ ___ O5 07 08 RIVER STATION (ASHR) ------- IO7IOTOTI4 7NCI4 400750 I i k. . . 7 X Q etA. UF tL t 9?ft CO. FIGURE 14 AS}IT . EL0T RIVER SEDINENT OXYGEN D AND (SOD) PROFILE, AUGUST, 1974, KEENE TO HINSDALE SOD (graiits oxygen/square v eter/day) vs. River Distance Kilo:neters (Miles) 7 1 i ,. ,. .1 I ..I I 1 . _I 7,0.. H Il . H F----H , .0 N ? t- 4,0 ?p . t13 1 - .1... HT .°. .1::: V .. __ 0 r 7 : - 1 - .. L. g - .- m- -. . .IH. . -I.- . . .. , J --C H ., ... ... - - r ... : - .: :.: . .: : . ... . : . 0 -I. ., . H : - I I : - 1- -t- - - irDos - . . .. . . . ( r? II rt < - T i )..r . ,. 0 .1 £7 i:ii L> Q8B :± .i AS0 B . .1 SQ3 _ .: .... . 0 Control ASOO6 : H . I t L .. ASOGB H . .f ,, ., . c.. ... ... ., 51 450 38.6 32.2 25.7 19.3 . 12.9 6.4 (23) (24) (20) (16) (12) (3) (4) - I i --71 j - F : :L H . H .HRIVERKILONETERS_(MILES)__.4_..JL... . t : L ..H . - . .. - -I ., . ..: . .. . I . I . , . . , . .. . : .j . ,. . I,, ,. . 1 .:_ L __ I I i .....I , I I 4 ................_.._3_._ ._ - I - - - Q. (0) I ... . ------- |