Plan Future Growth Saugerties Village 2008

PLAN FOR FUTURE GROWTH

VILLAGE OF SAUGERTIES WWTP NY-0031208

VILLAGE OF SAUGERTIES ULSTER COUNTY, MY

JULY 2007 REVISED: JULY 2008

Prepared For:

Village of Saugerties Robert Yerick, Mayor

Michael Campbell Suzanne LeBtanc Michael Karashay

Richard Moore Kelly Myers

William Murphy

Alphonse Marino, Wastewater Superintendent

Submitted To: New York State Department of Environmental Conservation

Division of Water Bureau of Water Compliance

Albany, Mew York 12233

Prepared By:

BRlNNlER and LARIOS, P.C. Professional Engineers

67 Maiden Lane Kingston, New York 12401

DENNlS M. LAJtIOS, P.E. LL No. 58747

DESIGN BEPORTS SUPERVISION CONSULTING SERVICES

BRINNIER and LtlRIOS, P.C. PROFESSIONAL ENGINEERS 8 U N D SURVEY0 RS

67 MAIDEN IAHE RfNGSTON, NEW YO= Kt401

- TELEPHONE (845) 338-7622

FAX (845) 338-7660

CHRISTOPHER J. ZELL, LL.S, Lic. No. 49629

SUBDIVISIONS . T!TLE SURWYS

TOPOGUPHLC SURVEYS

October 7, 2008

'Jean Occidental Environmental Engineer NYSDEC Division of Water- Bureau of Water Permits-4th Floor 625 Broadway Albany, New York 12233-3505

Re: Plan for Future Growth- Village of Saugerties WWTP SPDES #: NY0031208

Dear Ms. Occidental:

This is in response to your request to evaluate the cost differ+entid between Plant Expansion and PI~ased Te~mination of Septage Services (recommended alternative).The expansion cost is presented as a desktop level estimate due to cost and time considerations. The totai project cost is estimated to be %5,965,000.00 and is presented in Table 1.

The annual cost for debt retirement of this expansion will range from $596,500. (early yeas of bond issue) to % 298,250 (final year of bond issue.) This is based on a 20 year bond issue with a 3% inrerest rate. The average annual bond issue payment over the life of the bond issue would be $447,3 75. There would also be additional operating cost associated wid1 the new treatment units, The current revenue for receiving septage is approximately $125,000 per year. Tile expansion would result in a net increase in annual cost, of at least $332,000. ($447,375. - $125,OQO.)

It is evident that these two alternatives are disparate and a more detailed financial analysis of the alternatives is not warranted.

Please forward and comments ar concerns concerning tlre repad to this ofice.

Very tnrly yours,

BRTNNIER AND LARIOS, P.C.

&4& ennis M. Larim, P.E.

Mayor Robert Irerick, Village of Saugerties Alphonse Marino, Village of Saugerties Alexander L. Betke II, Village AAttolney

I Item

Table 1- Desktop Estimate of WWTF Expansion

Description

3d Primary Clarifier, including Equip, (62 ft x 16 ft)

3* Secondary Clarifier, including Equip, (62 ft x 16 ft)

3d Train of Rotating Biological Cantactors (36 ft x 72 ft)

Expansion of Grit Remover - 3rd Cell, 16 ft dim. + equip

Estimated Cost

Expansion of Chlorine Contact Tank -50%,(35 A x 25 ft)

Modifications to Entrance Channd

Digester Modifications to High Rate Mixing

Additional Emergency GeneratorlTransfer SwitcWHousing

.- -

%4UO,OOO,OO

$270,000.00

Site Process Piping, new and rerouting where needed

Electrical Construction

. . . . -. -. -. . . .

$450,000.00 '

$380,000.00

Conbol Modifications

Site Work and Restoration

$170,000.00

3 180,000.00

Gravity Thickener, 20 fi. diarn., including Equip. . - . , - - -, -

Sub-Total Cmstruction

Contingencies- I 0%

Design Services-aIlowance

Fnspection Services-allowance

Legal and Administration-alIowance

Totd Project Cast

$240,000.00

$4,654),000,00

$465,000.00

$400,000.00

$300,000.00

$150,000.00

$5,965,008.00

New York State Department of Environmental Conservation Division of Water Bureau of Water Permits, 4& Floor 625 Broadway, Albany, New York 12233-3505 Phone: (51 8 ) 402-81 1 1 FAX: (51 8 ) 402-9029 Website: www.dec.state.ny.us

Alexander B. Grannis Commissioner

March 24, 2008

Mr. Robert Yerick Mayor ViHage of Saugerties 43 Partition Street Saugerties, New York 12477

Re: Pian for Future Growth for Village of Saugerties WWTP; SPDES #: NY003 1208

Dear Mr. Yerick:

The Department has reviewed the Plan for Future Growth dated July 2007 for the above referenced State PaIIutant Discharge Elimination System (SPDES) gemit for the Village of Saugerties Wastewater Treatment Plant (U'WTP).

The Plan is meant to identify measures the Village of Saugerties WWTP will take 'to control the total suspended solids (TSS) and Biochemical Oxygen Demand (BOD) loading to the Wastewater Treatment Facility. Unfortunately, additional information and some revisions of the plan are nexessary before it can be approved. My detailed comments are as foIlows:

Please provide a conclusion on the immediate measures discussed in the Plan. How do these measures affect the performance of the treatment ptant? Which measures will the facility plan to implement? Would these measures allow future growth and assure annuaI average flows do not exceed 95% of the design flow? Please provide a capacity assessment of each unit at the WWTP in relation to Recommended Standards for Wastewater Treatment Facilities, 2004.

Please show that the Village has he necessary funding for implementing the future growth plan. Also, please demonstrate that the Village has the ability to impose a moratorium in any or all parts of the service area. Please refer to New York regulations at 6NYCRR Part 750.2.9(c)(Z)ji) (a, b and c) in developing a response to this comment. The regulations can be found on-line at http://www.dec,nv. qov/reps:'4584. htm1.

The Plan proposed to implement a pike program to feed septage into the solids treatmefit train. DO the treatment process and equipment use for handling the sludge have the capacity to accommodate the increased dudge quantities and loadings? Haw would the facility control the odor problems? Please evaluate providing pretreatment of the septage before discharge into the liquid treatment process.

Please provide data on the amount of the septage that would need to be reduced in order to meet design loadings and aliaw for future growth.

Page 1 of 1

, . '+. ,

Please submit the revised Plan for Future Growth to the Depamnent by May 24,2008. Should you have any questions, pIease contact me at (51 8) 402-8 1 1 6.

Sincerely,

! d n Occidenral Environmental Engineer

Al Fuchs, BWP Bruce Terbush, B WP Shayne Mitchell, BWP Meredith Streeter, BWC Koon Tang, BWC John Sansalone, Region 3 Dennis Larios, Brinnier and Larios, P.C.

Page 2 of 2

DENNIS M. IARIOS, P.E. Lk. No. 58747

DESIGN REPOKrS SUPERVISION CONSULTING SERVICES

BRINNIER and LARIOS, P.C. PROFESSIONAL ENGINEERS & LAND SURVEYORS

67 MAIDEN IAbE RINGSTON, NEW YORK 12401 -

TELEPHONE (845) 338-7622 FAX (845) 338-7660

CHRTSri'OPHER J. ZELL, L.l.9. Lic, No. 49629

SUBDIVISIONS 'rmm SURVEYS

'rOPOGRAFHIC SURVEYS

July 15, 2008

Jean Occidental Environmental Engineer NYSDEC Division of Water- Bureau of Water Permits4th Floor 625 Broadway ' Albany, New York 12233-3505

Re: Plan for Future Growth- Village of Saugerties WWTP SPDES #: NY003 1208

Dear Ms. Occidental:

This is in response ta your letter of March 24,2008.

General The Village of Saugerties WWTF began accepting septage waste in the mid- 1980's, at the urging of the Ulster County Department of Health. It was identified as one of the treatment facilities in Ulster County that had significant, excess biological treatment capacity. In 1994, the Village installed a septage receiving facility to allow for storage and flow-equalization of the high strength waste streamlseptage). In 1995, the Village requested permission to increase the septage waste from 8,000 gallons per day to 20,000 gallons per day. A copy of our engineering assessment of August 1995 is attached for your information (see Exhibit C). This includes a lot of the information requested regarding plant component analysis. The approval for acceptance of 20,000 gpd of septage was granted by the NYSDEC based on a careful analysis of the treatment plant capabilities.

In 200 I , the Village undertook a comprehensive WWTF restoration project in conjunction with the NYSEFC. This project included the following basis components:

Replacement of eight RBC units, drive motors, covers, and supplemental aeration for RBC units.

Replacement of Sludge Pumps, Controls, Primary and Secondary Flights and Drives. Replacement of Valves and Appurtenances.

The acceptance of septage at the Saugerties WWTF is discretionary. The Village can terminate this service at any time as there are no contractual obligations. It is the essence of the "Plan for Growth" that septage will be reduced or eliminated as/if demands for sanitary sewer senice in the Village and adjoining Town districts increases.

Re: Plan for Future Growth- Village of Saugerties WWTP SPDES #: NY003 1208

page 2 of 3

Specific Response to Comments

The measures proposed in the "Plan for G>rowth" include mostly monitoring and evaluation measures that would lead to conclusions once they are compIeted. In this regard, we do not understand that portion ofthe comrhent. It is the intent to allow future growth and assure that annual average flows do not k x c e d 95% of plant design. This is to he accomplished by the monitoring measures discussed and be a corresponding reduction in septage accepted at the plant.

Currently, the average annual flow at the WWTF (see page 4 of Plan) is 0.83 MGD, or 61 % of design flow,

'She Plan for Growth provided an estimate of future growth (see Page 6 ) of 340,000 gallons per day (0.34 MGD) over the next 20 years. When (and if) fulfiHed, this would bring h e daily average flow to 1.17 MGD (0.83 + 0.34), or 86% of design average flow

Current revenues from septage have been evaluated and determined to be $200,000. (2007) - f 240,00O.(projected @ 2008 rates). The current Village sewer rate of $4.30 per 1000 gallons, this revenue would be replaced by the addition of 140,000 - 150,000 gallons per day of don~estic wastewater.

2. With respect to funding of the future growth plan, there are only modest costs involved with the plan as presented. These casts are Funded through the Village sewer budget. The Village has ample funding to administg this plan.

With respect to the "moratorium issue'', please be advised that I have reviewed this matter with the Village attorney (Alexander Betke 11). The ViIlage can impose a moratorium by local Iaw. Additionally, the Village has authority in its inter-municipal agreement with the Town to impose the similar restrictions on the Barclay Heights Sewer Improvement Area and Kings Highway Sewer District.

The plan far a piIot study to introduce septage into the solids treatment train at the Saugerties WWTF is being eliminated from consideration (see Plan for Growth, revised date of July 2008.

Presently, it is estimated that the Septage loading accounts for 446 lbslday of BOD5 and 1273 lbslday of Suspended Solids (see page 7 of Plan for Growth). As discussed in the report, it is believed that the Suspended SoIids load attributable to Septage is actually higher . Using the mare conservative number, the available capacity associated with a reduction in septage at the Saugerties WWTF is projected as follows:

Re: Plan for Future Growth- Village of Saugerties WWTP SPDES #: W O O 3 1208

page 3 of 3

General Growth pressure in and around the Village of Saugerties (areas tributary to the Village of Saugerties WWTF) have subsided substantially in the past year.

% Reduction in 20,000 gpd Septage

at WWTF

25%

50%

75%

100%

Enclosed please find two (2) copies of a revised "Plan for Growth'' for the Village of Saugerties, dated July 2008. Please note that the recommendations have changed concerning the "pilot study" to introduce septage into the solids handling train at the facility. This recommendation has been eliminated.

Please forward and comments or concerns concerning the report to this office.

( I ) Based on 240 mg/l TSS concentration for domestic wastewater

Equivalent Reduction in SS

(lbslday)

368

636

1104

1273

Very truly yours,

Flow Equivalent Reduction (1)

(gallons per day)

183,850

367,700

55 1,550

73 5,400

BRXNNIER AND LARIOS, P.C.

Dennis M. Larios, P.E.

cc: Mayor Robert Yerick, Village of Saugerties Alphonse Marino, Village of Saugerties Alexander L. Betke 11, Village Attorney

TABLE OF CONTENTS

I. I I . Ill. IV. v.

Background Evaluation of Plant Operating Data Potential for Future Growth Plan for Growth summary .

Attachments:

EXHIBIT A: EXHIBIT B: EXHIBIT C:

EXHIBIT D: EXHIBIT E: EXHIBIT F:

Paqe Number

Annual Septage for 2006 Village of Saugerties WWTP Plant Operating Reports for 2006 Engineering Assessment of Village of Saugerties WWTF to Accept Domestic Septage Wastes, 1995 Summary of Saugerties WWTF Components- 2004 Ten State Standards RBC Design Outline from US FilterfEnvirex, August 2000 Site Layout Plan

PLAN FOR FUTURE GROWTH VILLAGE OF SAUGERTIES SEWER SYSTEM VILLAGE OF SAUGERTIES ULSTER COUNTY, NY

I. BACKGROUND

The Village of Saugerties is located in the northerly portion of Ulster County, along t he west

bank of the Hudson River, in New York State. The area under study is the incorporated

Village of Saugerties, with a population of approximately 4955 people (2000 census). The

Village varies in elevation from sea level to 230 feet, and has an average rainfall of 44

inches.

The existing sanitary sewer system was constructed in most part in 1902 and consists of

approximately 62,000 feet of collection pipe ranging from 6 inch to 24 inch. Nearly all of the

pipe is vitrified clay tile. Prior to 1978, there were three (3) separate primary treatment

plants serving the three major drainage basins of the Village. These were located at: East

Bridge Street, Ripley Street and Dock Street. In 1978-1 980, the Village consolidated all

treatment at the Dock Street location and converted the primary plants at East Bridge

Street and Ripley Street into wastewater pumping stations. Also at the time, the Dock

Street plant was upgraded to secondary treatment facility with a design capacity of 1.36

MGD (million gallons per day-average daily flow).

On or about 1980, the Village also began accepting wastewater from the Barclay Heights

Sewer District in the Town of Saugerties. This District connects to the Village system on

the south and is tributary to the East Bridge Street Pumping Station (Mini-System ?).

Thevillage of Saugerties WWTF began accepting septage waste in the mid-I 9801s, at the

urging of the Ulster County Department of Health. It was identified as one of the treatment

facilities in Ulster County that had significant, excess biological treatment capacity. In

1994, the Village installed a septage receiving facility to allow for storage and flow-

equalization of the high strength waste stream (septage). In 1995, the Village requested

permission to increase the septage waste from 8,000 gallons per day to 20,000 gallons per

day. A copy of our engineering assessment of August 1995 is attached for your information

(see Exhibit C). This includes a lot of the information requested regarding plant component

analysis. The approval for acceptance of 20,000 gpd of septage was granted by t h e NYSDEC based on a careful analysis of the treatment plant capabilities.

Page 2

PLAN FOR FUTURE GROWTH VILLAGE OF SAUGERTIES

VILLAGE OF SAUGERTIES SEWER SYSTEM ULSTER COUNTY, NY

In 2001, the Village undertook a comprehensive WWTF restoration project in conjunction

with the NYSEFC. This project included the following basis components:

Replacement of eight RBC units, drive motors, covers, and supplemental

aeration for RBC units.

Replacement of Sludge Pumps, Controls, Primary and Secondary Flights

and Drives.

Replacement of Valves and Appurtenances.

The acceptance of septage at the Saugerties WWTF is discretionary. The Village can

terminate this service at any time as there are no contractual obligations. It is the essence of the "Plan for Growth" that septage will be reduced or eliminated aslif demands for

sanitary sewer service in the Village and adjoining Town districts increases.

In 1996, the Village received approval from NYSDEC to increase septage loading at the

facilrty from 8,000 gallons per day to 20,000 gallons per day. During 2006, the Village

accepted 2,289,500 gallons of septage at the influent channel of the WWTF. The influent

loading reported in the plant operating data includes the septage from private, licensed

septage haulers. Septage was received 6 dayslweek (Mon-Sat), exclusive of holidays, and

averaged approximately 7630 gallons per day. At typical septage loading rates of 7000 mgll

BOD and 20,000 mgll TSS, this equates to:

2006 Septage BOD loading:

2006 Septage TSS loading:

.00763 MGD x 8.34 x 7,000 mgll=

.00763 MGD x 8.34 x 20,000 mgll=

446 lbslday

1 273 I bslday

Page 3


The basic SPDES permit !imitations for the Saugerties WWTF are summarized below:

Flow: 1.36 MGD- 30 day arithmetic mean

BOD, 5-day: 30 mg/l, 30 day arithmetic mean

BOD, 5-day: 85% removal efficiency

Total Suspended Solids: 30 mgll, 30 day arithmetic mean

Total Suspended Solids: 85% removal efficiency

0.3 mlll daily max Settleable Solids:

Total Coliform: 200 #/I 00 ml30 day mean, 400#1100 ml7 day mean

Page 4

PLAN FOR FUTURE GROWTH VILLAGE OF SAUGERTlES SEWER SYSTEM VILLAGE OF SAUGERTIES ULSTER COUNTY, NY

II. EVALUATION OF PLANT OPERATING DATA

The following is a summary of annual operating results at the Village of Saugerties

Wastewater Treatment Facility from 2004-2006. Month Average BOD 80D 0/6 Rem SS SS % Rem

Daily Flow Infl effl infl effl

Jan04 Feb04 MarM

A P ~ May04 Jun04 J u 104

Aug04 Sep04 0~304 Nov04 Dec04

Jan 06 Feb 06 Mar 06 Apr 06 May 06 dun 06 Jul 06

Bug 06 Sep 06 Oct 06 Nov 06 Dec 06

Page 5


A. Review of 3 Year Operatinn Results

A review of the 3 year operating results indicate that the plant operated well within the permitted flow of 1.36 MGD for all 36 months. The flow exceeded 1.0 MGD on only six months of the 36 month period. The wettest month in recent history, 0ctober2005, yielded a daily average flow of 1.2 MGD and results were maintained above 95% treatment efficiency for that period. The average daily flow for the three year period was 0.83 MGD, approximately 61% of design capacity and SPDES permit allowance.

Flows from the Barclay Heights Sewer Distrid in the Town of Saugerties average approximately 0.2 MGD - 0.25 MGD. This represents approximately 25% of the total flow at the Wastewater Treatment Facility.

B. ~ e v i e w of Septase Loading as Percent of Plant Loadinq

In 2006, the typical daily plant loading was:

1922 lbslday Total BOD loading : 0.85MGDx8.34~271.17mgll = (including Septage) Projection of Septage BOD loading as percent = 446 lbsldav = 23.2%

1922 bslday Total SS loading: 0.85 MGD x 8.34 x 662.56 mgll = 4697 lbslday (including Septage) Projection of Septage TSS loading as percent = 1273 Ibsldav = 27.1 %

4697 Ibslday

Note: BOD and SS concentrations of septage are estimated using typical concentrations of septage (USEPA Handbook of Septage Treatment and Disposal, 1984).

It is observed that theViHage influent suspended solids concentrations are very high(662.56 mg/l average for 2006). This is indicative of a higher septage TSS concentration than the USEPA guideline of 20,000 rngll.

Page 6


Ill. POTENTIAL FOR FUTURE GROWTH

Potential for increased flow and loadings to the Village of Saugerties WWTF can occur from

three areas:

I. Growth within the Village

Although there is not significant vacant land for development within the Village boundary,

there are some areas of potential growth, such as: Saugerties Industrial Park on North

Street, lands in the north portion of the Village, lands in the south extreme of the Village

(lower Main Street), and the former Cantine Mill property.

Projection: 100,000 - 150,000 gallons per day over 20 year period.

2. Growth within the Barclay Heights Sewer Improvement Area of the Town

The Village currently serves the Barclay Heights Sewer Improvement Area. Ahhough this

area is targely developed, there is potential for a 20% increase in flow.

Projection: 40,000 gallons per day over 20 year period.

3. Areas within the Town seeking capacity from the Village (i.e., Kings Highway

Corridor and Route 212 West of NYS Thruway).

The Village recently entered into an agreement to provide sewer service to the Kings

Highway Sewer District in the Town of Saugerties. This District is expected to have an initial

demand of 20,000 +I- gallons per day, commencing in 2009. There is also potential for a

town sewer district west of the NYS Thruway (Route 212 WestlRoute 32 North).

Projection: 140,000-1 75,000 gallons per day over 20 year period.

Page 7


Note: BOD and TSS loadings based on concentrations of 240 mgfl

I Summary of Potential Growth in Wastewater Flows & Loadings

The available capactty associated with a reduction in septage at the Saugerties WWTF is projected as follows:

Area - .- Sauge rties Village Properties

Barclay Hts. SIA

Potential Town Districts

Total

11) Based on influent TSS of 240 mgll for domestic wastewater

Flow ( g ~ d )

125,000

40,000

175,000

340,000

BOD loading l bsld a y

250

80

350

680

Page 8

TSS Loading l bslday

250

80

350

680

Flow Equivalent Reduction (I)

(gallons per day)

183,850

367,700

551,550

735,400

% Reduction in 20,000 gpd Septage

at WWTF

25%

50%

75%

100%

Equivalent Reduction in SS

( I bslday)

368

636

11 04

1273

PLAN FOR FUTURE G R O W H VILIAGE OF SAUGERTIES SEWER SYSTEM VILLAGE OF SAUGERTIES ULSTER COUNTY, NY

IV. PLAN FOR GROWTH

Monitor subdivision and site plan applications submitted to the Town Planning Board

which are from properties within the Barctay Heights Sewer Improvement Area.

Monitor the projected flows for each project through the SEQR process.

Monitor proposals for sewer service from outside the Village of Saugerties (other

portions of the Town of Saugerties) .

Monitor site plan and subdivision applications within the Village of Saugerties.

Monitor the projected flows for each project through the SEQRA process.

Evaluate projected revenue from sanitary sewer service (in Village and out of Village)

versus revenue from septage haulers.

Initial Evaluation Summary

Annual Septage Revenue: 2,289,500 gallons of septage annually (2006) @ $.I05 (q0.5

centslgal) = $ 240,398

Annual Wastewater Replacement Revenue: 153,000 gpd x 365 dayslyear x $4.301 1000 gal

= $240,134.

Establish capacity reserve of 340?000 gallons per day to be counted against equivalent septage loading.

Specifically, for every increase in domestic wastewater flow of 15,300 gallons per

day, the septage intake at the Saugerties WWTF should be reduced by 10%. This

is revenue neutral, and results in a net decrease in plant organic loadings.

Page 9


VILLAGE OF SAUGERTIES SEWER SYSTEM ULSTER COUNN, NY

V. SUMMARY

The Village of Saugerties WWTF is permitted to receive up to 20,000 gallons per day of

septage. This permission was granted by NYSDEC after a thorough analysis of plant

capacity, both solids handling and liquid stream treatment. In 2007, the Village received

revenue of approximately $200,000. Following a rate increase, the 2008 revenue is

budgeted to be $ 240,000. The acceptance of septage waste at the facility provides a

service for those with private septic systems in the region.

The Village sewer system, however, is in place to serve properties in the Village and has

contractual obligations to two Sewer Districts in the Town of Saugerties (Barclay Heights

Sewer Improvement Area and Kings Highway Sewer District). As growth occurs in the

Village and in these two areas, a reduction in septage wastes at the plant will be necessary

and will be implemented. There are no contractual obligations to accept septage waste at

the Saugerties WWTF and this service can be reduced or eliminated at the direction of the

Village Board.

As discussed in the report, it is recommended that septage volumes be reduced by 10% for

each increase in real domestic sanitary flow of 15,300 gallons per day. This is a "revenue

neutral" approach that will allow for revenues at the facility to remain at current levels while

suspended solids and BOD5 loadings are decreased.

Respectfully su bmittql,

Page 10


VILLAGE OF SAUGERTIES SEWER SYSTEM ULSTER COUNTY, NY

EXHIBIT A

A1-lnual Septic for 2006 Village of Saugerties WWTP

FROM :VILLAGE OF SWGERTIES WWTP

Month

January February

March April

May June July

August September

October November December

TOTALS MONTHLY AVE.

Annual Septic for

2006 Village of Saugerfies WWTP

Revenue


EXHIBIT B

Plant Operating Reports for 2006

Flew York State Deparlmnt of Envirnnrnental C a m r v a h n

WASYEWATER FACILITY CPERATIOW REPURT FOR MONTH UF: January, 2006

SPIES PERMIT NO. NY[W1312DB Village of SaugerWs Wastmater Tmatment Plant. Village of Saujsrties I Dock Stmat

v a u r . ~ a a e * e s t r ~ r ~ r t m (urn rarrPmalcUa(c) tirg.u.) s+r;-%urn ( ~ ' L I l o . r . ~ l l l UlraPEmEDSWm VaQLJ

c*la a 1 'llrpl nam1, 91ha hm 1 :dtTh~rag*wDC 1 1.q YII I= Mu-l m m n l ~ r l w n n 1 . d wx IEAUL~WI- IIIYLI;L'*L t nlm:rll~ SI)LO-t Y.: '16~1tt~:p ! W-CIT,PI hrrmttr~w ~ n u g ~ = I ---- sun j 0.0 2.2 1.02 0.4 13.0 12.0 6.8 6.8 6.9 6.9 10 0.1 -

Mon 2 1.5 2.2 1.14 0.5 11.0 12.0 7,O 7.0 6.0 7.0 20 0.7 l u e 3 0.2 2.5 1.50 0.6 12.5 13.5 '6.9 7.0 6.9 8.9 5 0 2

12.0 f l . 0 8.5 8.B 6.8 7.0 8 m y k k m g a Yinilrun hlmmm! Mlwu!. Nmmurr McnWyMPx M m h W M w

12.3 I / h6 I (.I 1 7 1 7.1 1 e5 1 0.L

F a d b y Wallilg Address 43 ParUion S-1, Saugerlks, NY 12477 Telephone I. [845] 24E-2331 Chief OperatnVb Name: Alphonsa m. Manno Cerrfication Grade: 2

1.0 LWU

0.7 Precip as mixed rain and snow 3000 ,

0.7 0.9 Prscjp as mixed rain and snow 0 0.0 1,O 120 2000

0.9 3-0 t 3,400 0.6 0.9 2000 0.8 1.1 2000

0.9 I. 7 4500

0.8 I .? 55w4

03 1.1 2500 Wed 11 1.1 1.3 Precip as rain. 4000 n u 12 0.8 0.8 9000

Fri 13 0.9 1 .o 6000

sat 14 0.7 1.1 Precip as snow. 0

Smr ~5 1.0 1.6 2500 Rton 16 4 ,4 1 .?j 2000 Tue I 7 1.3 1.4 f lectrical surge set r e c a d r back bb zero, had to eatamata flaw eve- Pmc@ as win) 8500

Wed 1 8 0.5 0.7 16,000 Pr&pasrain. 2000 Thu IQ 1.0 1.1, I .t,ooal F I ~ 2 ~ 1 1.2 1 . 3 ~ 3000 sat 21 0.8 0.91 2000 Qrrb 22

ldor~ 23

Sun t 29 1

hlon j 30 I

Precip as snow. D 2 500 4000

1 3000 1 -0 4 M O 1.5 4000

1.3 1.4 0 1.2 1.5 Rain. 1 900 1.3 1 -4 Rain. 3000 0.9 1.3 Wxed . 0

-4Y

~ 1 4 m r M a x t h m -3 ~ g l r 109300

Mew Yok State Uepartmenl of Environmental ConseNaCon

LVASTEIYATER FACI I. ITY OPERATION REPORT FOR MONTH OF: FEBRUARY 1.2006

SP13ES PERMIT MU. NY0[)31Za8 Mllage of Saugmtles Wastewebr Treaiment Plant. Village of Sugedfee I Dodr SL-t

0 4 12.5 10.5 7.0 7.3 6.7 6-8 8 0.1 0.3 11.0 11.0 7.0 7.1 6.7 43.8 5 0.1 0.9 12.0 11.0 8.0 8.6 8.7 6.8 6 0.3 0.3 13.0 11.0 8.6 8.8 6.7 6.8 12 0.1 325.0 8.3 287.5 13.5 0.3 I30 12.5 7.0 8 9 6.7 6.0 6 0.1 0.3 13.0 11.0 6.9 7.6 6.8 6.9 5 e. -l 0.3 12.5 10.5 8.8 6.9 6.9 6.9 20 -=.I 0.3 11.5 10.5 7.1 7.2 6.7 6.6 5 <.I 0.3 qD.0 9.0 6.8 7.0 6.8 6.8 13 <.I 0.3 12.0 10,Q 7 1 7.5 6.7 6.7 3 <.I

'mum. smm

p O U E ~ E D P W L I M M I

m'w-

1462.0

1245.0

617.0

3nmrlp , 11.3

14.5

12.3

*hapgall

IN&=* 7-

450.0

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Fsdlky MaillngAddress: 43 Partlon Skeet. Seqerties, NY 12477 Telept~one # : 1846) 246-2331 Chef Opersioh Name: Alphonre 1A. Madno Certification Grade: 2

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Due to high winds a trash cover wedged itself into the entrance channel and indicated Mgh flow. for three days ( 211 7X16 - 211 91063. The reading for Feb. 16.2008 and F eb. 19,2006 were both .97rngd. Th&ore, because ther was no rain, ihe three days in question win be dirnated at .97rngd.

Nclv Yrxk Stale Ckpartner~: ~i fnuiron~rien;a: Cansematim

I , '~hS~iCt ' lhlFI< FACI1.I IY C':-Cr %TION REPORT FOR hqOt1.: l I)'. M.WCH 2!H15

. - - . - - - . . - - . . . I . _ - . . - I _.- . . . I ' ; P E C F ~ RL,l l -~l [ i NYC(13 l i n 8 Village of Saugertles tWastt?watcr Trcutmcnt flar!t, 'Allana nt Ssllge&5! 13:>1X t;@wl I

FROM :UILLFIGE OF SRUGERTIES WWTP FW NO. : 645 246 2331

b?I!>STsiY; TI-? F.IICILI~ Y C?PERtlI IC)V t?tPC3i 1- 7!;li3 MON?!I OF APRIL,OG

- . . . . - - - - . . . . . _ -- . !SP,?FS PCfZVl i N(? NY3[131ZUH V~llage of Saugerlks CVasthvaler Tr%tinc:lt Flarir V ~ l l a g ~ or SatlgerCles I Dmk Street

!

FROM :VILLFBE OF SALGERTIES WWTP FQX NO. : 845 246 2331 Mar. 07 2007 12 : 43PM P1B

WASTEWATER F A ~ L I ~ Y OPERATIUN REPORT FOR MQWH ac MAY DB

SPDES PERMIT PI0 NYW31208 \rillage of SaugeMes Wrastmraler Treatment Plm, wage of Saugarilecl I h c l ; SBesl

RUM :VILLALE OF FQUGERTIES WWTP Mar. 07 2001 12: 44PM P I 2

New York State Weparlment of Emritmmenta? Conmatbn

WASTEWATER FACILITT OPERAT ION REFORT FOR MONTH OF: dun-DB

SPDES RAUV NO. MY(W13 1208 Wltage of Ssugertles W a s M e r Trealment Planl. Mlage a l Sauge- I 00th Shet

FRI3N : U I L M E DF SWG!&I?T I ES lJGITP FRX NO. : 845 246 2331 Mar. 07 2007 12:45PM P I 4

WASTEWATER FACILITY OPERATIDM REPORT FOR MDNTtI OF: July 2006

SPDrS PFRMIT Nf3 NYOD3120B Mlfwe of SaugerDTes '#askwater T m h e n t Plant, Village d Saugenies f Dock Street

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FROM :VILLAGE OF SRUEERTIES WWTP FW NO. :845 246 2331

New York Rat# Department of Envlt~ntnesllal CmenraUan

WASTEWATER rAClLlTV OPERATIUN RE PORT FOR MONTH OF1Piw~e ,2006

SPDES PERMIT NO NYOM12Mi Village d Saugemes Waslewater Trealmml mnt, Viltage of SswertleP / UOd; Ske l

0.4 24.0 23.0 7.1 7.4 7.2 7.3 13 Wed 2 0.0 l h u 3 0.0

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Fti 18 0.0

N w Y ~ r k Slate Oeparbnenl d Envirnnmenlal CorrsewaHm

i V S l FVvATEH FACII IYY OPERATION REPORT FOR MONTH OF: SEPTEMBER 86

SPDES PERMIT NO. NYW312f18 VUlage of Sauperlles Wastawater T m a h n t Plant, Wlage of Saugerties I Dock Street

WIVE Lv ~ ~ W A G C T R E ~ ~ ~ ~ ~ O U I i B P E R e . N R E ( C : 1 - zd7 IKU.I 5erx13U; SOLIES ~ n w g 8.04 [molll Bl-DgOtm@W,L)

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sat 2 0.9 2.4 0.85 0.5 21.0 22.0 6.8 6.7 6.8 6.0 23 0.1

Fadlty tAaM~ng Address 43 Parbtron Strest. Saugadies,NY 12477 'Telephone # : [MS) 2#-2331

Chief Operetab Name: Alphame M. Marlna Csrtrfimlim Gwda: 2

7ue 21 0 -8 0.8 8000

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FECIPL-F~R* I ~e rn~ rks Enbr comments. oWm8ans. apeeating problams. equlpmerrt fanure, etc. Yuent: MF or W P N

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FR(3M : V I UQGE OF SWGRT I ES 1JL.W FAX M. : 845 246 2331 Har. 07 2@3? 12: 47N P21

FROM : U I LLRGE OF SAUEERT I ES M P FQX NO. : 845 246 2331 Mar. 07 a 0 7 12: 48PH W

FAX NO. : 845 246 2331 Mar. 07 XlB7 12: 48PM P23

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FROM :VILLAGE OF SWGERTIES WWTP Mar. IB7 2007 12:48PM P24

NW York State Department of Enulmnmental Cmaenratin

WAS1 EWATER FACILITY OPERATION REPORT FOR MONTH OF: DECEMBER ,2008

~SPDES PERMIT MO. NYW31208 Village DF Saugertw Waslav&er Treametlt Phnt VllbQe of Saugerfle~ I Dock Slr&

~ U b t ~ ~ Y P E ? l ? Y I I W ( Y G Z I I ~ P W U W ~ C ) b H W * l ( ~ L E S O L I P t i ~ P W m b IWV SmmCD-4UULl

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0.80 6.7 8.7 12 0.1

facilily Malhng Add-. 43 Patfition W t , Sawdes. NY 12477 ? J ~ h 0 ~ % : (MS) 246E331 Chief Opmtol's Name: Mpbanse M. t4arlno CerYDcalion Grade.. 2

PLAN FOR FUTURE GROWH VILLAGE OF SAUGERTIES SEWER SYSTEM VILLAGE OF SAUGERTIES ULSTER COUNTY, NY

EXHIBIT C

Engineering Assessment of the Village of Saugerties WWfF to Accept Domestic Septage Wastes, 1995

of the

VILLAGE OF SAUGERTIES WASTEWATER TREATMENT PLANT

TO ACCEPT DOMESTIC SEPTAGE WASTES

Village of Saugerties, Ulster County, New York

August 1995

PREPAED FOR

Village of Saugerties Village RaU, Municipal Building

Partition Street Saugerties, New York 12477

Anthi Chorvas, Mayor Peter Lawrence, President, WaterlSewer Board Greg Teetsel, Superintendent, Wastewater Dept.

PREPARED BY

BRINNER AND LARIOS, P.C. PROFESSIONAL ENGINEERS AND LAND SURVEYORS

67 MAIDEN LANE KINGSTON, WEW YORK 12401

SECTION

Background and Scope

General Plant Data

TABLE OF CONTENTS

III. Rotating Biological Contactom WCs) A. Organic Treatment Capacity B. Current Organic Loading C . Projected Organic Loadings

IV. Sludge Thickener A. Solids Treabnent Capacity B. Current Solids Loading C, Projected Solids Loadings

Anaerobic Sludge Digesters A. Volatile Solids Treatment Capacity B. Current Volatile Solids Loading C. Projected Volatile Solids Loadings

VI. Sludge Belt Press

VII. Conclusions and Recommendations

References

Table 1:

Table 2:

Table 3:

Table 4:

Table 5:

Table 6

Table 7:

LIST OF TABLES AND EXRll3ITS

1995 Plant Flows

1995 Influent and Effluent Total BOD Concentrations and TBOD Removal Efficiencies

1995 Influent and Effluent SS Concentrations and SS Removd Efficiencies

Projected TBOD Loading to RBCs under various Septage Leading Conditions

Projected Solids Loadiig to Sludge Thickener under various Septage Loading Conditions

1995 Raw Sludge Volatile Solids Content

Projected Volatile Solids Loadiig to Anaerobic Digester under various Septage Loading Conditions

Exhibit 1: General Location M3p

Exhibit 2: Copy of New York State Department of Envhonmentd Conservation "State Pollutant Discharge Elimination System" (SPDES) Permit

Exhibit 3: General Plant Layout - Village of Saugerties WWTF

BACKGROUND AND SCOPE

The Village of Saugerties owns and operates a &ndat-y wastewater treatment plant bcated at the end of Dock Street in the Village of Saugerties (see Exhibit 1). The phnt currently receives and treats an average of 0.68 MGD of domestic wastewater.

At present, the Village of Saugerties also receives and treats domestic septage. Septage is the residual product that is pumped from septic t d s by independent septic tank pumperslhaulers. The septage is delivered to the new (on-he in December, 1994) septage-receiving facility located adjacent: to the Village Wastewater Treatment Facility 0. The 20,000 gallon septage storage tank allows the Village to introduce the high-strength waste to the head of the WWTF at a constant rate, currently at about 5.5 GPM (approx. 8,000 GPD).

The equalization of wastes provided by the new septage storage tank has improved the operational efficiency at the WWTF, and the effluent quality has been excellent. Prior to this storage tank, the East Bridge Street Pumping Station acted as the septage receiving facility, and as a result of n o d pumping activities, the WWTF received slug loadings of high-st~ength septage wastes. Although the WWTF remained in - compliance with effluent limits, plant operations suffered from the slug-loadings.

It is the purpose of this report to provide technical documentation supporting the Village's desire to accept a total of 20,000 GPD of septage. This report will assess the potential impact of increased septage loadings to each prwss at the MWlT that is limited by its ability to effectively treat organics and/or solids. For purposes of this report, it is assumed that the volume of additional septage to ultimately be received will not cause the average flow to the plant to exceed the design hydrauiic capacity of the existing treatment units.

A fmal assumption made for this report is that all treatment units at the WWTF are operational while the facility is introducing septage. This report does not address the issue of redundancy, since the flow of septage can be easily terminated by shutting off the new septage transfer pump.

11. GENERALPLANTDATA

The Village of Saugerties WWTF is permitted to discharge treated wastewater in accordance with effluent limitations set forth in NYSDEC SPDES Permit # NY 003 1208 (refer to Exhibit 2).

The major components of the Village of Saugerties WWTF include primary settling tanks, rotating biological contactors ( R S C s ) , secondary settling tanks, chlorine contact chamber, sludge thickening tank, anaerobic' sludge digesters, and a sludge belt press housed in the control budding (refer to Exhibit 3). Of these units, only the following are considered critical treatment processes when considering an increase in organic andlor solids loading rates (as opposed to hydraulic loading rates): RBCs, sludge thickener, anaerobic digesters, and sludge belt press. Each of these processes will be discussed in further detail later in this report.

Plant flows during 1995 have been recorded, and are summarized below in Table 1. Plant operating efficiencies for Biochemical Oxygen Demand (BOD) and Suspended Solids (S S) removals are also su-d below in Tables 2 and 3, respectively. Data included in this report has been provided by the Village of Saugerties. The reader is reminded that the performance data presented in Tables 1, 2, 3, and 6 include the impact of the 5 -5 GPM (about 8,000 GPD) septage addition currently allocated to the system.

Date

TABLE 1 PLANT FLOWS

WGD) 1995

AVERAGE

Max. Instantaneous Average Mh. Instantaneous

Table 1 indicates that the average flow to the WWTF is approximately 50% of the permitted average discharge (0.68 MGD vs. 1.36 MGD).

TABLE 2 INFLUENT A!AD EFFLUENT TOTAL BOD (TBOD) CONCENTRATIONS (mgll)

and TBOD REMOVAL EFFIClENCY

1995

Date -

AVERAGE

Influent Effluent 46 Removal

Table 2 indicates that the average effluent TBOD concentration was 10.1 mdl, which is well below the permitted 30-day arithmetic mean of 30 mdl. Furthermore, the average removal efficiency of 97% far exceeds the minimum removal efficiency of 85 %. It is also noted that in no instance did any of the 24-hour composite samples fail to meet the 30-day or the 7-day arithmetic mean effluent h i t , or the minimum percentage removal limit.

Date -

AVERAGE

TABLE 3 INFLUENT AND EFFLUENT SS CONCENTRATIONS (md)

and SS REMOVAL EFFICIENCY

1995

Influent Effluent % Removal

Table 3 indicates that the average effluent SS concentration was 6.4 mfl, which is well below the permitted 30-day arithmetic mean of 30 mg/l. Furthemore, the average removal efficiency of 99 % far exceeds the minimum removal efficiency of 85 %. It is also noted that in no instance did any of the 24-hour composite samples fail to meet the 30-day or the 7-day arithmetic man effluent limit, or the minimum percentage removal limit.

IU. ROTATING BIOLOGICAL CONTACTORS (RBC'S1

A. ORGANIC TREATMENT CAPACITY

The Village of Saugerties WWTF is equipped with RBC's for biological treatment. A total of eight (8) RBC units exist at the plant, configured as parallel trains consisting of four (4) RBC units per train. B c h RBC unit contains 100,000 SF of surface area available for bacterial growth (biofh). With the use of baffles, each train contains two (2) RBC units in its "firsl- stage", which is the critical area when assessing RBC organic treatment capacities.

The recommended maximum organic loading rate to the first-stage of RBC's is 4.0 lbs. of Soluble BOD(SBOD)/day/1000 SF of media area (NYSDEC, Page 46).

With both RBC trains in operation, the total first-stage area provided is 400,000 SF. This results in an allowed treatment "capacity" equd to 1,600 lbs. of SBODJday.

Assuming that SBOD represents approximately 50% of the TBOD (WEFIASCE, Page 7931, the maximum treatment "capacity" of the RBC's at the ViIlage of Saugerties WWTF is 3,200 lbs. of TBODIday.

B. CURRENT ORGANIC LOADING

Previous operating data have determined that the primary clarifiers at the Village of Saugerties WWTF can remove up to 45 % of the influent TBOD, and up to 90% of the influent SS. However, for the purposes of this report, it is assumed that the primary clar5ers remove only 30% of the influent TBOD (Lindeburg, Page 8- 17). From Table 2 above, the average influent TBOD is 291 m&. Applying the 30% BOD reduction through the primary cHers results in a TBOD loading of about 204 mgfl to the fmt-stage of the RBC's, which equates to a current average loading of 1,157 Ibs. of TBODlday ([0.68 MGD] [204 mfl] [8.34]).

In comparison to the treatment "capacity" derived in Section 1II.A. above, the existing RBCs at the Village of Saugerties WWTF have excess treatment capacity available of 2,043 Ibs. of TBODIday, under current operating conditions.

C. PROJECTED ORGANIC LOADINGS

The effect of additional septage wastes on the operation of the RBCs can be predicted by asuming that septage has a TBOD of 7,000 mfl (USEPA, Page 27). With this assumption, and including a 30% BOD reduction through the primary c M e r s as previously noted, the TBOD loading to the first-stage of the RBCs can be projected for incremental increases in septage loading. The impact of 3,000 GPD increases in septage loading to the plant is summarized

.

in Table 4 below, and is based on the premise that each 3,000 GPD increase in septage equates to an increased first-stage TBOD loading of 123 1bs.l day, derived as follows:

TABLE 4

PROJECTED AVERAGE TBOD LOADING TO FIRST-STAGE OF RBCS UNDER VARIOUS SEPTAGE LOADING CONDITIONS'

Septa~e Load (GPD)

1st Stage TBOD Loading (lbs. of TBODlday)

Excess "Capacity" (lbs. of TBODlday)

Assumes primary clarifiers remove 30% of influent TBOD.

Table 4 above indicates that the RBCs could support a septage loading beyond the goal of 20,000 GPD.

IV, SLUDGE THICKENER

k SOLIDS TREATMENT CAPACITY

The Village of Saugerties WWTF is equipped with a sludge thickener to improve the effciency of the anaerobic digesters, and to provide additional sludge storage in case of problems with the digesten. A single sludge thickener exists, and is 20' in diameter, with a side water depth of ICY.' The .

surface area of this unit is about 3 14 SF.

A typical solids loading rate for sludge thickeners is 12.3 - 205 lbs. of Sohds/day/SF (Metcalf & Eddy, Page 606).

At a loading rate of 20.5 lbs. of Solids/day/SF, the sludge thickener has a treatment "capacity" up to 6,437 lbs. of SoldsJday.

NOTE: The original engineering design of the sludge thickener (1975) provided for a solids loading rate 10.2 IbsIdayISF, at a design flow=2.l~MGD,with~totalsolids=3,2131bs~day.

From Table 2, the average TBOD loading to the p h t is 291 mfl, and assuming the p r h w clarifiers remove 30% of the influent TBOD, the TBOD loading to the RBC's is 204 mfl. The plant's average effluent TBOD is 10.1 mdl.

The weight of the biological solids from the RBC process is given by

Wmokh, Mi, = @)(BOD Removed by ~ C ' S , @)(HOW, MGD)(S.34) (Lindeburg, Page 8-26),

where k (cell yield coefficient) is assumed to equal 0.25 (Lindeburg, Page 8- 27), which leads to

From Table 3, the average SS loading to the plant is 1,017 mdl, while the plant's average SS effluent is 6.4 mdl. First, it is assumed that 50% of the SS is removed by the primary clarifiers (Lindeburg, Page 8-17). It is a h assumed that 70% of the SS is volatile and organic in nature (Lindeburg, Page 8-8; a h

reflected as measured BOD). This second assumption is quite important, since the organic portion of the SS remaining after primary settling is utilized in the biological process, and the solids generated thereby is based on the TBOD concentrations (shown above). Consequently, calculations involving solids loadings must reflect the appropriate subtraction of the organic portion of the SS. In other words, of the SS remaining after primary clarification, ody 30% would contribute directly to solids production (hut), while 70% would contribute indirectly through biological activity. Total solids prodiction values are approximated as shown Iselow:

Wag,,,. = ( S S Removed, rngll)(Flow, MGD)(8.34); (Lindeberg, Page 8-26)

which leads to

W,-, = (SS Removed by Primary, mgll - say 50 %)(Flow, MGD)(8 34) = [(1,017)(0.50) rng/l](O.680 MGD)(8.34) = 2,884 Ibs. of Solidsjday

and

*-dry = (SS Removed by Secondary Processes = 30% of SS remaining after Primary - Effluent SS)(Flow, MGD)(S.34)

= [(1,017)(0.50)[0.30) - 6.4 mg/Llf0.680 MGD)(8.34) = 829 lbs. of Solids/day

Thus, the current total solids loading to sludge thickener is 4,117 Ibs. of solidslday (404 lbsjday + 2,884 lbslday + 829 lbslday).

In comparison to the treatment "capacity" derived in Section 1V.A. above, the existing sludge thickener at the Village of Saugerties WWTF has an excess treatment capacity available of about 2,320 lbs. of Solidslday, under current operating conditions.

PROJECTED SOLIDS LOADING

The effect of additional septage wastes on the solids loading rate to the sludge thickener can be predicted by assuming that septage has a TBOD of 7,000 mg/l and S S of 15,000 mgjl (USEPA, Page 27). With these assumptions, and including the assumptions made above in Section IV.B., the solids loading to the sludge thickener can be projected for incremental increases in septage

loading, as summarked in Table 5 below. The values shown in Table 5 are based on the following typical calculations, and allow effluent valua up to 30 mg/l for both TBOD and SS:

Condition:

11,000 GPD Septage (i.e., increase of 3,000 GPD over current loading)

Flow-W eighted influent TBOD : [(29 1 mfll(0.680 MGD) + (7,000 mg/l)(0.003 MGD}U 0.683 MGD - 321 mg/l TBOD

TBOD loading to RBCs (30% reduction through Primary Clarifiers): 32 1 m d - (321 mg/l)(0.30) = 225 mgll TBOD

Flow-W eighted influent SS: 1(1,017 mfl)(0,680 MGD) + (15,000 mg/l)(0.003 MGD)]/ 0,683 MGD = 1,079 mg/l SS

Total solids loading to sludge thickener is 4,102 Ibs. of solidsjday (278 Ibslday + 3,073 lbs/day + 751 lbs/day).

TABLE 5 PROJECTED AVERAGE SOLIDS LOADING TO SLUDGE THICKENER

UNDER VARIOUS SEPTAGE LOADING CONDITIONS'

Septage Load &iOlogicp~ solids

(GPD) O ~ & Y >

8,000 (current) 4M2

11,000 278

14,000 308

17,000 338

hsumes average effluent BOD and SS do not exceed 30 mfl. At treatment efficiencies as noted in Tables 2 and 3 for BOD and SS removals, respectively.

Table 5 above indicates that the sludge thickener could support a septage loading beyond the goal of 24000 GPD.

V. ANAEROBIC SLUDGE DIGESTERS

A. VOLATILE SOLIDS TKEATMENT CAPACITY

The Village of Saugerties WWTF is equipped with two anaerobic sludge digesten for sludge stabiiiation and reduction. The digestion process at the plant is a high-rate, completely mixed, multi-stage system, with one digester considered the "primary" unit, and the other the "secondary" unit. The digesters are piped so that either can act as the primary digester if needed, Each digester tank is 30' in diameter and 20 feet deep. The volume of each tank is about 14,000 Cubic Feet (CF), or 106,000 Gallons (Note: the volume provided by the "secondary" unit is not noml ly included in calcukitions for digestion, since its purpose is to store, concentrate, and clarify the digested sludge)

For high-rate digesters, volatile solids loading rates of 0.10 - 0.40 lwdayICF are commonly used (Metcalf & Eddy, Page 617). The higher loading rates are cornonly used when preceeded by sludge thickeners, and when the sludge inventory can be easily managed by sludge dewatering equipment.

At a loading rates of 0.40 Ibs. of Volatile Solids/day/CF, the primary digester has a treatment "capacity" up to 5,655 lbs, of Volatile Sdidslday.

NOTE: T'he original engineering design of the digesters (1975) provided for a 20 day SRT (Solids Retention Time), at a design flow =

2.1 MGD, total solids = 3,2 13 lbslday, and a volatile solids loading rate of 0.1 63 IbslCFlda y .

B. CURRENT VOLATILE SOLIDS LOADING

Operating data from the Village of Saugerties WWTF is s u m z e d below in Table 6 to illustrate the current average volatile solids loading to the digesters.

TABLE 6 . RAW SLUDGE VOLATILE SOLIDS CONTENT'

1995

Date

AVERAGE

% Volatile

Thickened sludge prior to digestion.

From Section 1V.B. above, the current total solids loading is 4,117 ibs. of solidslday, which equates to a loading rate of 2,989 lbs. of Volatile Solids/day (4,117 lbslday x 0.726).

In comparison to the treatment "capacity" derived in Section V.A. above, the existing primary digester thickener at the Village of Saugerties WWTF has an

excess treatment capacity available of about 2,773 Ibs. of Solidslday, under normal operating conditions.

C. PROJECTED SOLIDS LOADING

The effect of additional septage was@ on the volatile solids loading rate to the primary sludge digester can be predicted using the data presented in Table 5 above. Table 7 below summarizes the projected volatile solids from the total soIids values, assuming a typical volatile solids content of 73%, as supported by Table 6 above:

TABLE 7 PROJECTED AVERAGE VOLATILE SOLIDS LOADING TO PRIMARY SLUDGE

DIGESTER UNDER VARIOUS SEPTAGE LOADING CONDITIONS'

Septage Load (GPD)

Excess Capacity Obslday)

8,000 (current)

Assumes average effluent TBOD and SS do not exceed 30 mg/l (except for 8,000 GPD septage 'load condition). Assumes average raw sludge solids are 73% Volatile (except for 8,000 GPD septage load condition). At Beatment efficiencies as noted in Tables 2 and 3 for TBOD and SS removals, respectively.

Table 7 above indicates that the primary anaerobic sludge digester could support a septage loading beyond the goal of 20,000 GPD.

VI. SLUDGE BELT PRESS

The Village of Saugerties recently replaced its vacuum-assisted coil filter (over 25 years old) with a 1.2 meter wide belt filter press. The coil filter was not producing an acceptable sludge cake, and was in need of major overhauling. Due to its inefficiency, the coil filter was being operated up to five times per week

At this time, the new sludge belt press is usually operated once per week, and occassionally twice per week. Each "run" processes about 23,000 gdons of secondary digester sludge, prducing a dewatered sludge with a solids content of 26-2746. The capacity of the belt press and related appurtenances is well in excess of the current loading to the plant, and if needed, the unit could be operated more frequently or with longer dewatering runs.

For the above reasons, a more detailed evaluation of the sludge dewatering system at the Village of Saugerties WWTF has not been conducted.

W. CONCLUSIONS AND REXOMMENDATXBNS

The following condusions and recommendations are offered regarding plant operations and treatment capacity, and the feasibility of accepting additional septage up to a total of 20,000 GPD :

The Village of Saugerties WWTF currently accepts and treats an average of 8,000 GPD of septage, which is introduced into the wastewater stream just before the plant at 'an average rate of 5.5 GPM.

The Village of Saugerties WWTF is currently discharging an average of 0.68 MGD treated wastewater, which is one-half its permitted discharge limit of 1.36 MGD.

The Village of Saugerties WWTF is currently discharging treated wastewater wiih an average effluent TBOD of 10.1 rngll, and an average effluent SS of 6.4 rngll. These average effluent values are well within the facilities h i t s of 30 mg/l (30-day average) for both TBOD and SS.

The Village of Saugerties WWTF has significant additional treatment capacity available. The extent to which additional wastes can be accepted and effectively treated by the phnt will depend on the amount and nature of wastes accepted fi.e., normal domestic sewage vs . high-strength septage) . At this time, the Vilhge desires to accept up to 20,000 GPD of septage,

5 , Septage addition to the plant would not create hydraulic overloading problem, since the plant's design average flow is 1.36 MGD.

6. Septage addition to the plant would create additional solids and/or organic loadings to the following processes at the Village WWTF: RBC's, sludge thickener, anaerobic sludge digesters, and sludge belt press.

7. All of the units directly impacted.by additionaI septage loadings have excess weatment capacity available to accornodate this goal. Refer to body of this report for further detail.

8. Despite the fact that the Vihge of Saugerties WWTF has excess treatment capacity available for further septage additions, it is recommended to increase the septage loading only on an incremental basis. This will achieve two purposes: (1) to allow the plant pmesses to acclimate themselves to the higher loadings and to regain operationaf equilibrium, and (2) to allow for intermediate evaluations to be conducted of plant performance by, regulatory agencies.

9. It is recommended that the Village of Saugerties WTF accept additional septage wastes at 3,000 GPD (additional 2 GPMJ increments. The Village of Saugerties should not initiate this additional loading until such a time as regulatory approval has been issued. After the WWTF has operated at the increased septage loading for a period of two months (60 days), an overall evaluation of plant operations should be prepared by the W WTF Operator, and shall be submitted to the regulatory authorities for review and endorsement prior to increasing the septage loading by another 3,000 GPD, and so on.

10. At a flow of 20,000 GPD septage, the treament processes analyzed herein still have excess theoretical treatment capacity available. This excess capacity should be considered a safety factor against peak influent flows and loadings, and without further study in the future, should be consideted the maximum value to receive.

11. If the WWTF should fail to meet its primary purpose of providing satisfactory secondary treatment in accordance with its SPDES Permit, the Village shall reduce the septage loading to the plant as needed.

Great Lakes-Upper Mississippi River Board of State PubIic Health and Environmental Managers (GLUMRB), Recommended Standards for Wastewater Facilities - 1990 Edition, Health Education Services, Albany, NY, 1990.

Lindeburg, M.R, Civil Enpineering Reference Manual - Fifth Edition, Professional Publications, Belmont, CA, 1989,

3. Metcalf & Eddy, Inc., Wastewater Engineering - Second Edition, McGraw-Hill, New York, 1979.

4. New York State Department of Environmental Conservation (NYSDEC), Design Standards for Wastewater Treatment Works - 1988, Albany, NY, 1988.

5. United States Environmental Protection Agency (USEPA), Handbook of Septaee Treatment and Disposal, Cincinnati, OH, 1984.

6. Water Environment Federation and the American Society of Civil Engineers (WEFIASCE), Design of Municipal Wastewater Treatment Plants, Volume II, 1991.

EXHIBIT 1

EXHIBIT 2

PLAN FOR FUTURE GROWTH VILLAGE OF SAUGERTlES SEWER SYSTEM VILLAGE OF SAUGERTlES ULSTER COUNTY, NY

EXHIBIT D

Summary of Wastewater Treatment Components in Relation to 2004 Ten State Standards


Summary of Wastewater Treatment Components in Relation to 2004 Ten State Standards

-.

Component I Required I Provided I Reference

nfluent Channel

nfluent Channel

nfluent Channel

3rit Removal

- - -

Prirnaw Clarifiers 1 l o f t SWD

1 inch spacing on bar screen

velocity min 1 ..25 fps, max 3.0 fps

Srit Removal

Grit Removal .

dual channels wlisolation

dual units-mechanical

Primary Clarifiers 1 2000 gpdlsf SOR @ DPHF 1 2266 gpdlsf @ 4.1 MGD 1 72.27

inch spacing plus cornminutor channel

Velocity of 1.25 fps at min flow and 3.0 fps at max

grit handling & removal provisions

velocity @ 1 fps

Primary Clarif ers

Primary Clarifiers multiple units ( multiple units 71.1 t h 1

64.121

61.1 22

dual channels wlisolation

dual units-mechanical

Rotating Biological Contactors 1 71 4,400 s.f. media 1 1,029,800 s.f. media 1 NYSDEC Standards

61.123

63.3

mechanical grit removal provided

velocity control at 1 fps

1 J 1

1000 gpdlsf SOR @ DAF

63.47

63.43

755 gpdlsf Q1.36 MGD

Rotating Biotogical Contactors

Rotating Biologicat Contactors

--

Secondary Clarifiers

72.21



covers or inside building

multiple units

10 ft SWD

1200gpd/sfSOR@DPHF

-

Secondary Clarif ers

Chlorine Contact Tanks

fiberglass shelters with access doors

multiple units plus aeration

Chlorine Contact Tanks 15 min detention @ PHF

1 multiple units I multiple units 1 102.44

NYSDEC Standards

71.1

10 ft SWD

2266gpdlsf@4. ' iMGD

muttiple units

72.1

72.231

I I I

22 min detention @PHF

Anaerobic Sludge Diqestian I multiple units I multiple units 1 84.1q

multiple units

102.44

Anaerobic Sludge Digestion

- - -

72.7

0.1 0-0.40 tbs VSSlday/CF

Gravity Thickener I optional for volume reduction provided 83.1

Sludge Dewatering

0.25 IbsVSSldaylCF with high rate, complete mix

I I I

84.1 1

qole: 'Sl~erc are 2 Primary Clarifiers and 2 Secondary Clarifiers, each are 15 ft wide x 60 ft long x 10 fi S WD.

on site dewatering req'd on site belt fitter press in Control Bldg, 1.2 meters

88.1


EXHIBIT E

RBC Design Outline from US FilterlEnvirex, August 2000

INFLUENT PARAMETERS Flnw apd Flnw mad RTjT!.?. lhMay l>( l i l5 mglL T1S. mu4 f<l Y I-td mp/L 7 1Ctl mg!I Min tarn^. F MP* T ~ r n o . F D I ~ Alkalirlily, r n g k as b C O 3 Ppak Daily Factor peak Mnurly Factor

USFiIfer, Envhex Products Rotating Biological Confacfor Design Outline

Project Saugerties, NY WWTP I 1 -Aug-2000

Engineer: Brlnnier and Larios Engrs. Oeslgnsr; Mark Gehrmg

DESIGM Csrhon Oxidation F7rimar)l treatment Inflt~ent K factor FMi>ani K' factor fertic, factor. (SF = 1.5 fos septk Unk and 1.0 fw others) Fstjmatsd influent SBOD5, m g k naoc+irad SBOa5 in the &uent to meet the TEOD Urnit, wit Required hvdraulic loading rate @ 55 F, gpdlff"2 T-ma~rature eorractim factor (at minimum b m p ~ * n ) 'nrreded hydraulic loading rate, gpdlfP2

Renrlired surface area for B W wduetian, p 2

Nitrification (YeslNo) PRC ~rrRuent NH3-N, mgiL (for septic tank, add hydrolhed oaanic N FWuenl NH3-N, mgk Arrimmia loading i@ 55 F, 10 redurn PfH3-N to

l(1 matL, lbldayi1000 fP2 ; rmasrafure cnrrecttm fador ?\rrfqr.e area mquired b reduce NH3-N to 30 mgh, fth2 Wvdrsl llic loadrng @ 55 F to reduce NH3-M from 30 m@L

to effluent requirement, gpdmA2 r -~--cte.rl hydraulic bading rate, gpdMA2 .;llrfrire Area required to reduce MH3-N from 30 mglL

fa efnuent requirement, gpdRh2 Flprlt~irqd ~ut-faw area for nltrificafion, f182 Tntal Surface Ama Required k r BOD, Pt"2

EsOlmsted Estimated

Estimated

Estimated

Estimahd

USFiIfer, Envirex P~oducts Rotating Biological Contador Design Outline

Proled: Saugerties, NY W P 1 I-Aug-2000 Engimr: Brinnter and Larios Engrs. Destgner: Mark Gehring

RECOMMFNPED EQUIPMENT R-mnmended Mod~ll(s): Four (4) Modd 003-25f -SA RBCs as s t a p one, two (2) Model 603-25 1 -SA RBCs as

stage two, and (2) Model 861-251-SA RBCs as stage three. The total of eight (8) RBCs with supplemental aeration are proposed for installation b existing tankage. Units will be =ranged in 2-1-1 wnfiguration for three (3) treatment stages.

Type d Media Standard Density Standard OmW

Hgh Densky

3-nta1 wlrtace area provldd in a# stages:

No. of Unib Unit Surface Area. f Tatal S h c e Area, P 2 4 121,500 .ras,ooo 2 121,500 243,000 2 t 50,400 300.800

Media envelope dimensions ere 12 R 13.6 m) diameter by 25 d kng. i-t~erimg on the first stage = 2.61 b S50D11000 fiA2/day

RBC Drive MOW Total

Operating HP

--

_I 11----

SECTIOH ' C - C '

BETIIL F

<-.I PLAN V I E Y

- - nbl:i. I - la BUTFLUV n ~ r w u r IOW DETAIL I)

I p--. 1,

I4 I INlEl1W I r r l ~ Y LL - +m- ,

mu 1 Ltpm I *run 1 btr I u m l a 1 KtW I _ , * . . _ . ._ ._ -

w3 1% 1364 * G I

PLAN FOR FUTURE GROWTH VILLAGE OF SAUGERTlES SEWER SYSTEM VILLAGE OF SAUGERTlES ULSTER COUNTY, NY

EXHIBIT f

SITE LAYOUT PLAN OF SAUGERTIES WF

Page 17

Chlorine Contact Tanks m

Secondary -

Clarifiers

. / / /

/ - . - Septage Storage Faci m rc

- . - - .

Influent Channel

Clarifiers

/ t

Garoge

Digester Digester Thickener

Compost Building (Pole)

t

GENERAL PLANT LAYOUT VILLAGE OF SAUGERTIES WWTF BRlNNlER AND LARIOS, P.C.

Scale: 1" = 30'

Plan Future Growth Saugerties Village 2008

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