I - I L ø rvejiiance & SEWER OUTF L STUDY CitY of Leba 0fl, New July 15, 1971 ------- SEWER OUTFALL STUDY CITY OF LEBANON, NEW HAMPSHIRE JULY 15, 1971 On July 15, 1971, personnel from Region I of the U.S.Environmental Protection Agency, under the supervision of David Stonefield sampled various sewer outfalls in the city of Lebanon, New Hampshire, as well as the Mascoina and Connecticut Rivers (Figure 1 and Table 1). Kerry Anderson and Robert Myers collected the downstream Connecticut River samples (CN14), and David Stonefield and Paul Murray collected samples from the remaining stations. This study was designed to develop a case against the city of Lebanon, New Hampshire, under 33 USC 1160. Connecticut River The Connecticut River, an interstate body of water, was sampled above the Wilder Dam (CN13) and below its confluence with the Mascoma River (CN14). Mascoma River The Mascoma River, an intr astate body of water, was sampled at the Bank Street Bridge in Lebanon, New Hampshire (MSR1) and the Route 12A Bridge in West Lebanon, New Hampshire. (MSR2) Lebanon The city of Lebanon, New Hampshire, including the village of West Lebanon, is located on the Mascoma and Connecticut Rivers. Sampling stations were established at the Taylor Street sewer outfall, (LEB1), and the Eldridge Street sewer outfall, (LEB2), in Lebanon and the Bridge Street sewer outfall, (LEB3) in West Lebanon. During sampling, ------- flow from the Taylor Street sewer was 0.20 mgd and 0.03 mgd from the Bridge Street sewer. Sampling Procedures Samples at stations MSR1 and MSR2 were collected with a Kemmerer- type sampler and transferred into their storage and shipping containers. A].]. other samples were hand dipped and collected directly in their storage and shipping containers. Samples for bacterial density, pH, turbidity, and nonfilcerable residue were placed in clean, sterile glass bottles. The dissolved oxygen samples were placed in 300 ml BOD bottles and preserved with 2rn1 manganous sulfate and 2znl of alkali azide reagent. The phosphorus samples were placed in a quart cubitainer and preserved with 5m1 of chloroform. The BOD samples were placed in a gallon cubitaiqer. All samples were iced. A metal thermometer was used to obtain the sample temperature. The dissolved oxygen, pH and turbidity analyses were performed in the field laboratory. The bacterial (total and feca]. coliform) and nonfilterable samples were filtered and the bacterial sample J ncubated in the Mobile Laborat9 y.and returned the same day with the remaining samples to the Environmental Protection Agency Labora- tory in Needham, Massachusetts for analyses. Sample Identification Each sample was tagged with one chain of custody tag giving collect- ing agency, lab number, time, date, source of sample, collector’s signa- ture and title, witness’s signature and title, plus information on the transfer of the sample. In addition, a prenumbered field data card was ------- filled Out for each collection time to record weather conditions, tempera- ture of the sample, at d sampling location. Results The resuics of the sampling are sunmiarized in Tables 2 and 3. ------- TABLE I CITY OF LEBANON, NEW HAMPSHIRE Sampling Locations _______ ________ Longitude o 72 i 3 Y® 19/9 438—G6--—--—2-1!8 - MSR1 43 38 50 72 16 06 Jescript ion Connecticut River above the Wilder Dam Connecticut River below con- fluence with the Mascoina River Mascoma River at Bank Street Bridge Routes 4 & 110 Mascoma River at Route 12A Bridge Taylor Street sewer outfall Lebanon, New Hampshire Eldridge Street sewer outfall Lebanon, New Hamps hire Bridge Street sewer outfall West Lebanon, New Hampshire Station CN13 Latitude o 43 40 03 )ISR2 LEE 1 LEE 2 43 38 04 43 38 39 72 19 03 72 15 14 433840 721510 72 18 50 LEB3 43 39 03 ------- TABLE 2 Summary of Data City of liebanon, New Hampshire 4uly 15, 1971 Number Station Time Temp 0 C DO (mg/i) BOD 5-Ddy (mg / il) pH SU Turbidity (JTIJ) Total NF. Residue (mg/I) Total P (mg/i) Total Coliforms (per 100 ml) Focal Coliforms (per 100 ml) 27420 LEB]. 1025 19.0 - 160 7.3 90 25.7 17.28 36,000,000 1,000,000 27421 LEB2 1040 26.5 - 2.7 7.6 2 3.9 0.08 100,000 900 27422 LEB3 0945 20.0 4.2 190 7.7 48 58.8 15.04 44,000,000 4,800,000 ------- TABLE 3 Summary of Data Connecticut River & Mascorna River BOD Total NJ’. Total Total Fecal Sample DO 5-Day p11 Turbidity Residue P Coliforins Coliforms Number Station Depth Time Temp°C (Mg/i) (mg/i) SU (JTU) (mg/i) (mg/i) (per 100 ml) (per 100 ml) 27410 CN13 20.0 0850 23.0 6.1 .Kl.2 6.9 3 7.6 0.24 3000 860 27411 CN14 2.0 1055 23.0 7.0 1.2 7.3 3 0.24 37000 110 27412 MSR1 1.0 1010 20.5 8.8 Kl.2 6.9 3 0.04 13000 30 27413 MSR2 1.0 1100 21.5 8.3 1.4 7.0 3 0.24 60000 2000 ------- VER I’ OH T CNI4 SE\ ’ .:1 OLJIF7 i !.. Tfl IJDY CIFY OF LE [ [ NOH, E\ T\Y I ’ 1’’ I ii ‘.. )i Wilder 1: I2 ------- |