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HomeMy WebLinkAbout0000 CAMP STREET - HYANNIS CONDOS CAMP STREET—Camp Street Condominiums Hyannis . ? Y., r . o TOWN OF YARMOUTH 0 , - y SOUTH YAR-MOUTH MASSACHUSETTS 02664 MATTACH ESFy BOARD OF HEALTH June 26, 1985 Hebron Associates, Inc. 1341 Main Street Springfield, MA 02701 Re: Camp Street Condominiums Dear Sirs: This letter is in regard to the above subject matter of which the Board of Health, at their meeting of June 17, 1985, reviewed your request to allow the installation of subsurface sewage disposal systems, and the Nitrate Loading that would result from such installations, as developed and previously presented by I.E.P. Consultants, at the Camp Street site. The Board of Health also reviewed, at that time, the town of Barnstable's Water Quality Advisory Committee's serious concerns with regard to the project exceeding the recommended 5 parts per million guidelines which would pose a serious threat of potential contamination of their public water supply wells. After review and discussion, the Board of Health voted unanimously to deny the request to allow the installation of subsurface sewage disposal systems at the Camp Street location, based upon the fact that Nitrate Loading from the site would far, exceed Cape Cod Planning and Economin Development's guidelines of 5 parts per million, in addition to considering the protection of the environment and the public's health, and protecting the public drinking water supplies of both Yarmouth and Barnstable. Any person aggrieved by the decision of the Board of Health or Department of Environmental Quality Engineering may seek relief therefrom within 30 days in any court of competent jurisdiction, as provided by the laws of this Commonwealth. If you have any questions, please contact me at my office: 398-2231 ext. 35. Very truly yours, "Bruce Murp , R. ., MPH cc: Executive Secretary Health Ag nt, own of Yarmouth Yarmouth Water Commissioners John Kelly, Chairman Barnstable WQAC BM/av Oman Construction - Construction Mgr. Ralph Cipolla, Jr., Chairman, Yarmouth CC: Chairman, Board of Health WQAC f ile . A � o TOWN OF YARMOUTH SOUTH YARMOUTH MASSACHUSETTS 02664 • MAT ES �OORPORATE06� BOARD OF HEALTH June 11, 1985 Mr. John Kelly, Health Agent Town of Barnstable 397 Main Street Hyannis, Massachusetts 02601 Re: Camp Street Apartment Project [Davenport Realty Trust] Dear Mr. Kelly: Enclosed for your'information are engineered plans, for the above cited project, dated: Revised - 6/7/85, prepared by Coastal Engineering. As you are aware, this area also falls within your zone of contribution. On June 3, 1985, the Yarmouth Board of Health approved the plans, with the following restrictions (as noted on plans): (1) Lawn area will be limited to 212 square feet per unit. (2) Occupancy will be limited to 2 persons per unit. (3) Leaching facilities will be changed from Leach Pits to Leaching Galleries. (4) Monitor well to be installed prior to completion of project. Also enclosed is a letter from Davenport Realty Trust, dated May 15, 1985. If you, or your committee, have any comments, etc., with regard to the aforementioned, please forward such to this department within 2 weeks, or, as soon as possible. Would you also kindly notify the water supply company for this area with regard to the above. Thank you for your cooperation, and attention, in this matter and should you have any ques- tions, please do not hesitate to contact me at my office: 398-2231 ext. 35. Very truly yours, Bruce rp , R.S. MPH Health Ag t, To n of Yarmouth BM/av cc:: Chairman, Board of Health cc: Thomas E. Kelley, Chairman Water Comm. file Dewitt Davenport DDavelvod Real Trust 20 NORTH MAIN STREET SOUTH YARMOUTH,MASS.02664 + 61A-398-2293 TRUSTEES IOHN K.DAVENPORT PALMER DAVENPORT �.,,NWITT P.DAVENPORT May 15 , 1985 Mr. Bruce Murphy, Health Agent Town of Yarmouth Town Hall South Yarmouth, Mass. 02664 Re: Proposed 53 Unit Multi-family Cluster Development Camp Street, West Yarmouth, Mass. Dear Mr. Murphy: Thank you for placing our firm and the above project on your schedule for the June 3 , 1985 meeting. The presentation will include information relevant to the nitrogen concentration and how this project. differs from the theoretical model set fofth in the C.C.P.E.D.C. three part report on multi- family developments dated November 23 , 1984. Outlined below are some specific items that will be discussed. The units to be built are small one bedroom townhouses with a guest room/study. The average number of people who occupy similar units in com- parable developments owned by this company is 1. 3 to 1. 4 . The formula allows for no rental vacancy rate. The formula does not encompass the average occupancy period during a year based upon the profile of a tenant. The formula does not reflect any fertilizer application program performed by professionals. A master landscape plan Affiliates: Davenport Building Co.,Intercity Alarms,Cape Cod Fence Co.,The Mortgage Co.,Red Jacket Inns, Blue Rock Golf Club,Yarmouth Shopping Plaza,Cape Cod Mall,Cape&Islands Telephone Mr. Bruch Murphy May 15 , 1985 Health Agent Page 2 Maintenance programs Accompanying this letter are two maitrex tables and a site development plan for your board members. Please advise me if you need any additional information. Sincerely, DAVENPORT .REALTY TRUST DeWitt P. Davenport Trustee DPD/eh l �- L DavenForReal Trust Iv 20 NORTH MAIN STREET SOUTH YARMOUTH,MASS.026o4 / 6]?-398-2293 / TRUSTEES IOHN K.DAVENPORT PALMER DAVENPORT Jv DeWITT P.DAVENPORT June 11 , 1985 Comments on Table 1 - 4 fly i t Camp Street Project ----------------------- l nr Maximum occupancy; 2 persons/unit The average number of people who occupy similar units in comparable developments owned by the company is 1. 3 to 1. 4 The formula used and data in the tables does not reflect an annual vacancy rate of 5% Table 2 encompasses the average occupancy period during a year based upon the profile of our typical tenant base The formula assumes a 600 loss of N by leacing. It has been conclusively prcven applications of N by qualified professionals has resulted in minimal leaching. The formula dos not include loading by household pets - our leases prohibit pets. Our leases prohibit storage of -unregistered cars, boats, campers etc. outside Affiliates: Davenport Building Co.,Intercity Alarms,Cape Cod Fence Co.,The Mortgage Co.,Red Jacket Inns, Blue Rock Golf Club,Yarmouth Shopping Plaza,Cape Cod Mall,Cape&Islands Telephone N 1 � JS � rP G � I � rj t» r o o 0 0 o p JI .� G��t -mot-, -t' 1��': �r�{,�t �_,=c.� - ►5� C 4 o z `- a P G ✓� s _ ^ I -� vl `l� ril 6 0 L V O O • � ' r � N N N N 1�. ✓ � y TABLE 3 - year around occupancy but with an annual vacancy rate of 5 � UNIT N Concentration 95% N Concentration Total N OCCUPANCY from Sewage occupancy rate from fertilizer Concentration' (persons/unit) (Mg/L) * N Concentration (Mg/L)* (Mg/L) 1 . 3 3 . 87 3 . 68 . 24 3 . 92 1 . 4 4 . 17 3 . 96 . 24 4 . 20 1 . 5 4 . 47 4 . 25 . 24 4 . 49 1 . 6 4 . 76 4 . 52 . 24 4 . 76 1 . 7 5 . 05 4 . 80 . 24 5 . 04 2 . 0 5 . 94 5 . 64 .'24 5 . 88 I i * From Table 11 i TABLE 4 • The net effect of R months - /yeas average occupancy and the annual vacancy rate of 5 Unit Occupancy (persons/unit) I 1 . 3 2 . 57 2 . 44 . 24 2 . 68 1 . 4 2 . 77 2 . 63 i . 24 I 1. 5 2 . 97 2 . 82 2 . 87 . 24 1 . 6 3 . 17 3 . 06 3 . 0]- . 24 3 . 25 1, 7 3 . 36 3 . 19 . 24 3 . 43 I 2 . 0 3 . 96 3 . 76 . 24 4 . 00 i * From Table 2 OFY TOWN OF YARMOUTH 0 WA\TlER DEPARTMENT MATTA M f 102 UNION STREET YARMOUTH PORT. MASS. 02675 WATER COMMISSIONERS THE BOARD OF WATER COMMISSIONERS MEETS EVERY MONDAY AT 7:30 P.M. AT UNION STREET OFFICE FREDERICK J. THACHER I ROGER G. EDWARDS. JR. THOMAS E. KELLEY � . I I SUPERINTENDENT . PAUL WILSON TO: V Mr. John Kelly Barnstable Health Agent FROM: Board of Water Commissioners SUBJECT: Camp Street Apartment Project DATE: April 24, 1985 Enclosed please find a report on the above-referenced project prepared by Whitman & Howard, Inc. , Water Department consulting engineers, as requested by our Board. Enclosure 1 'P WbAmn '•&t H'SI C T/:ra-vt Inc, est. 1869 inc. 1924 45 William Street,Wellesley, Massachusetts 02181-4050, Telephone (617) 237-5000 8 9 f� April 23, 1985 RECEIVEO APR 2 4 1985 Yarmouth Water Dept. Yarmouth Port Mass.02675 A 1 Board of Water Commissioners 102 Union Street Yarmouth Port, MA 02675 RE: Camp Street Apartment Project Gentlemen: At your request, we have reviewed the plan entitled "Camp Street Apartment Project for Davenport Realty Trust" dated March 8, 1985. The project consists of 53 rental units on 24.54 acres of land in an area zoned for 20, 000 square foot lots. A letter from Paul Wilson dated April 8, 1985 indicates that the developer proposes to have 1, 000 square feet of grass area per unit and 5 feet of grass on each side of the driveway. Based on the information supplied to us the increase in nitrogen due to this development is 10 .63 ppm. Using the CCPEDC guidelines in their Water Supply Protection Project, Final Report, we calculated that 43 house lots (24.54 acres x 1 .75 = 43 lots) could be developed using the entire area. This translates into an increase in nitrogen of 11 .58 ppm. We have the following comments relative to the proposed development. 1. The calculations show that either single family houses or the proposed development produces more than double the desired increase in nitrogen. 2 . The calculations show that the difference between single family houses and the proposed development is insignificant based on the CCPEDC analysis . The single family housing . comes out slightly higher in nitrogen. 3 . The lot plan shows no limitations of development based on V configuration, swamps, etc. Civil& Environmental Engineering . Architecture • Landscape Architecture Water Resources • Waste Management . Energy Conservation e Water Pollution Control Designing a Better Environment For 115 Years f f Whitman & Howard, Inc. -2- 4. Based on 1, 2, 3 above, there does not appear to be a significant difference between either the single family houses or the proposed development from the standpoint of groundwater deterioration. ' 5 . We are concerned with the concentration of parking. lot runoff and would hope that the catch basins would be provided with protection to keep oils, gasoline, etc. from discharging directly into the ground.. Should you have any questions, please call. Very truly yours, t1 OF WH I TMAN & HOWARD, INC. ROBERT ;v WY FA N ✓vr ,� Robert L. Wyman, P.E. Assistant Vice President RLW/lf 84-331 i r { -ILAIAP ��e ��'�s rt .,•i. r..� &- Howard, Inic., est.1869 inc 1924 _I 45 William Street, Wellesley, Massachusetts 02181-4050, Telephone(617) 237-5000 � 9 1® February 12, 1985 ^ 4 RECEIVED Board of Water Commissioners m FEB 12 1985 N 102 Union Street Yam obl,Watet D-4L Yarmouth Port, MA 02675 ,p Yarmmd'PM Re: Development Foxwood II $ Gentlemen: As a result of your January 2nd request we sent you a letter on January 7th containing our comments on the proposed development known as Foxwood II . Today' s letter is in response to your verbal request for additional comments based upon receipt of further information in the form of the BSC Cap Cod Survey Consultants ' report entitled Nitrogen Loading Impact, -Foxwood Condominiums, Camp Street, Yarmouth, MA, Project No. 03-1290 . 03 dated January 23 , 1985 . Based on the information available to us for our January 7th review, we estimated the increased nitrogen loading from Foxwood II in the zone of contribution to Well #14 would approximate 10. 5 mg/liter. Our analysis was based .on the following: 1. The methodology given in the Water Supply, Project, FINAL REPORT, Cape Cod Planning and Economic Development Commission, December 14, 1979, and 2 . The area of Foxwood II WITHIN the zone of contribution to Well #14. The BSC report introduced additional information in the form of a stated fertilized landscaped area of two (2 ) acres and a population density of 2 . 6 persons per unit. The site plans in the report do not show the limited area of landscape. In our j initial review we estimated the landscaped area to be the area that might be disturbed in construction. This area amounted to j over three times' that given in the BSC report. i I � f k� S 1 Civil& Environmental Engineering Architecture • Landscape Architecture VVater Resources • Waste Management • Energy Conservation • Water Pollution Control r }; Whitman Howard: Inc. -. -2- Our initial report used 3 persons per dwelling unit as noted in the 1979 CCPEDC water supply report. The BSC report bases its use of 2 . 6 persons per unit on "the most recent demographic infor- mation for this type of housing on Cape Cod as derived by Phil Herr Associates . " BSC noted that 2 . 6 persons is larger than the actual number of persons per unit for a variety of condominium projects on Cape Cod as surveyed for BSC. Obviously, the nitrogen loading can be reduced by reducing the area to be landscaped. Based on the size of the development and the possibility that future owners (current owners or others ) may change the area, we felt it appropriate to use the area to be disturbed in construction as noted in our original review. None of the plans that have been given to us show any landscaped areas . If the area is to be limited to the two (2 ) acres noted in the BSC report that area should be shown on the plans and the permanency of the area should be established in an enforceable deed restriction. The nitrogen loading can not only be reduced by decreasing the fertilized landscaped area but also by reducing the number of people contributing nitrogen to the area. The use of 2 . 6 persons F' per unit instead of 3 reduces the nitrogen loading from humans by �i 0 .4/3 . 0 x 100 = 13 .3%. We used the CCPEDC recommended figure of 3 persons per unit, which we would continue to use, based on the potential longevity of the project. The BSC report calculations show an increase in nitrogen due to Foxwood II of 4.46 ppm. The analysis appears to assume that the entire area of 48 acres contributes to the dilution of the nitrogen loading. Since part of the area is outside the zone of contribution to Well #14 we have taken that area out of considera- tion in our evaluation of the data in the BSC report. 1 . Increase in nitrogen concentration as noted in the BSC report using 2 acres of fertilized landscape and 2 .6 persons per dwelling unit over the entire 48 acres: 4.46 ppm. 2 . Increase in nitrogen concentration using the 2 acres noted in the BSC report and 3 persons per dwelling unit over the entire 48 acres: 5 . 03 ppm. 3 . Considering only the area within the zone of contribution to Well #14. Use the BSC data of 2 acres and 2 . 6 persons per dwelling unit. There are seven buildings with 78 bedrooms within the area. The area is equal to about 26 acres . a Whitman & Howard. Inc. -3- Assume the -landscaped area within the zone is in direct proportion to the number of buildings and/or bedrooms within the zone: 7/9=78%, 78/103=76% use 77%. BSC total contribution = 780 . 8 #/yr. x . 77 = 601 .2 3/yr. The 601 . 2 #/yr. over 26 acres = 6 . 36 ppm. Using 3 people per unit = 7 . 14 ppm. The methodology outlined in the CCPEDC report assumes that the ' area under consideration is composed of routine residential house lots spread out over the entire area. Foxwood II is concentrated in a limited portion of the total area and this fact has to be considered in evaluating the figures noted above. We noted this in our January 7th letter. We are also concerned about the concentration of parking lot runoff into catch and leaching basins. We would hcpe that the catch basins would be able. to trap any gasoline or oil that may be drained into them and that these basins will be regularly maintained to prevent the entrance of these materials into the groundwater. We have not taken Foxwood I into consideration as it already exists and is outside the area of plans submitted for review. In summary, it is our opinion that the current proposal for Foxwood II does not meet the intent of the guidelines given in the CCPEDC report on water supply protection. Please let us know if you have - any questions, or if we can be of further help to you in this matter. Very truly yours, WHITMAN & HOWARD, INC. byC , .�--L.-._ . Robert L. Wyman, P .E. Assistant Vice President by 1/1 aul C. 8ucknam, Jr. P.E. Senior Vice President RLW/PCB/jab J.N. 84-331 ,✓ Cape Cod Survey Consultants 3261 %4ain StreetiRoute 6A Barnstable Village, Massachusetts 02630 (617)362-8133 January 23 , 1985 Bernard Plante , V. P. Bradgate Associates 14 Northbridge Business Center 74 Northeastern Boulevard Nashua , N .H . Re : Nitrogen Loading Foxwood II Camp St . , Yarmouth, MA (Our File NO. 03-1290 .03 ) Dear Mr. Plante: In accordance with your request we have computed the probable Nitrogen Loading which could reasonably be expected from your Foxwood II development in Yarmouth. Our report follows. It is , however, our conclusion that the probable nitrogen loading from this development at equilibrium concentrations would not only be well below the EPA allowable limit for drinking water ( 10 ppm) but would also be below the 5ppm standard recommended locally by the Cape Cod Planning and Economic Development Commission. Further, it is our opinion that if both Foxwood I and Foxwood II are taken together, these standards are still met. In making our review, we have relied on the following informa- tions . • USDA/SCS detailed soils map of the Town of Yarmouth; • USGS surficial geology map for the Hyannis Quadrangle; • Proposed Site Plan for Foxwood II prepared by BSC/Cape Cod Survey Consultants; • As-built and site plans of Foxwood I prepared by BSC/Cape Cod Survey Consultants; • Soil logs , percolation tests , groundwater elevations and wetlands information for the Foxwood I and II sites pre- pared by BSC/Cape Cod Survey Consultants; . CCPEDC/208 Zone of Contribution maps for Barnstable and Yarmouth; • The 1979 208 update for Yarmouth. The Foxwood II site includes 48 . 17± AC of land of which approxi- mately 3 . 19- AC ' are two pieces of wetland ; one a wooded swamp The BSC Group of Companies Planning Sun%eyinc • Desion 'Erw7meering yy, A . ! fringing Hawes Run, a stream which flows through the site , and the � . 9 9 second an isolated white cedar swamp. The soils .in the area are mapped primarily as Carver Coarse Sands ( 51 ) ( Figure 1 ) with varying slopes . These soils are high permeability , droughty sediments . Hawes Run and its bordering wetland are mapped as Saugutuck Sands ( 56A) , a fine grained low permeability , often waterlogged sediment . These same soils and a small amount of Tisbury series soils make up Foxwood I . ,{ The best available regional groundwater mapping is probably that produced by USGS for the CCPEDC 208 prject . That mapping is the basis of the areas Zone of Contribution mapping ( Fig . 2 ) . That Vill map shows that groundwater is moving in a generally southerly direction across both the Foxwood II site , and the Foxwood I site which abuts to the north. The local flow is influenced by Hawes Run . This stream has a year round flow to the south through the west central portion of the site as shown on the 100 scale proper- ty plans on file with the Town of Yarmouth. That is , nearby the stream itself , flow toward the top of the water table is actually southeast and southwest toward the stream. Yarmouth has municipal water supply wells approximately 2500 feet to the west/southwest of the site on the west side of Hawes Run and approximately 1000_ and 2000 feet to the east of -the development portion of the Foxwood II parcel . lF The 208 Zone of Contribution maps for the above mentioned wells reflect the influence of both regional and localized groundwater flow in a gap between the zones for these wells . The Foxwood sites straddle this unmapped zone and run over into the margins of each mapped zone as well. It would be exceptionally difficult to say with accuracy what the direction of flow might be, In fact . in an area like this , it would undoubtedly vary from year to year depending on the elevation of the water table , amount of rainfall , amount of recharge , and the amount and schedule of pumping for all the area wells . It is important , therefore , to ensure that the equilibrium loading from the site , as a whole , is within accept- able limits. This would help to ensure water quality in nearby supply wells even in a year when the entire site might be tribuary to one set of wells or another. In order to calculate the site' s nitrogen loading rate , the for- mula derived by CCPEDC in conjunction with USGS was used . Recharge was determined based on average figures given the 1979 208 Water Quality Update . Population densities of 2 . 6 persons per unit were used in accordance with the most recent demographic information for this type of housing on Cape Cod as derived by Phil Herr Associates . This is a number larger than the actual number of persons per unit for a variety of condominium projects on Cape Cod as surveyed for our office ( Figure 3 ) . An assumption 'x of 2 acres of fertilized landscaped area was made based both on i" existing plans of this project and other similar projects built by the project proponent . The preliminary report of Whitman and Cape Cod Survey Consultants 3261 Again Street Route 6A Barnstable Village. Pvlassachusetts 02630 The BSC Group of Companies Planning • Surveying • Desion • Engineering 1 Howard on the project used 5000 s . f . of lawn area per unit . Although the 208 report_ uses this number it is for single family detached housing. Our experience with both engineering and land- scape design for condominium projects with attached housing is that lawn areas are much smaller in aggregate. ' Further, because : , . it is possible to deal with this aspect of the formula through special design and deed restriction , it is an area where further reductions could be achieved and where increases need never occur. It is possible to design even landscaped areas using indigenous plants with low nitrogen requirements or nitrogen fixing capabili- ti es such as black locust , scotch broom, wild indigo, love grass , � switch grass and similar species . Our calculations ( Figure 4 ) show a projected equilibrium concentration of approximately 4 . 46 p.p.m for Foxwood I and 4 . 37 for both projects . The CCPEDC recom- mended limit is 5ppm which is one half of the EPA limit of 10ppm. Please note that we have not attempted to calculate the renovation which might be achieved if any of the sites wetlands intercept ma" wastewater travelling near the top of the water table. Wetlands and their associated low permeability organic and inorganic soils ? have been shown to attain uptake rates for nitrogen of between 100 and 400 lbs . per surface acre per year ( Fig . 5 ) . It is con- ceivable , therefore , that the Nitrogen Loading rates could be lower in the actual case for years when the local flow directions toward Hawes Run and regional flow directions toward the south dominate over an induced redirection of flow from severe pumping rates and/or durations in the easterly and westerly wells , than indicated by our calculations. There are a total of 4 .5 ac of vegetated wetlands and low permea- bility conservancy district soils in Foxwood I . As previously noted , Foxwood II has 3 . 19 acres of wetland . If all of these areas were functioning at a removal rate of 100 lbs . per surface 6_ acre per year the uptake of nitrogen could be 769 lbs per year. This is equal to 42 % of the annual loading for both sites and would result in an equilibrium concentration of approximately 2 .6ppm. We would not suggest , however, that this concentration be used to figure the impact of the project as it is not possible to calculate accurately the amount of the site ' s waste water flows which may come in contact with these wetlands from year to year due to the high number of flow variables , as mentioned previously. We have not attempted to calculate potential overall ground water quality in either zone of contribution within which the projects lie . The reason for this is that the Foxwood project ( s ) have calculated nitrogen concentrations not only below the EPA required limit , but below the CCPEDC recommended limit of 5ppm. Further, it is our understanding that the zone of contriubtion to the east of the site already contains a reasonable amount of protected open Cape Cod Survey Consultants 3261 Main Street Route 6A Barnstable Villaoe. Massachusetts 02630 The BSC Group of Companies Planning • Surveying • Desion • Enaineering space which would help to control overall en nitro levels in the, e,- zone. The project , therefore , does not represent , in our opinion , a threat to ground water quality. Very truly yours, CAPE COD SURVEY CONSULTANTS Arlene M .�Wilson Environmental Planner /fC7' Roger Michniewicz , P. E. Project Manager cc : Mr. Robert L. Wyman , P. E. Assistant Vice President Whitman & Howard , Inc . j Yarmouth Water Department Yarmouth Board of Health 10/26 Cape Cod Survey Consultants 3261 Main Street Route 6A Barnstable Villaae. Massachusens 02630 The BSC Group of Companies Piannino Surveying • VDesion • Enaineering r;f"i. ..a, 2q *'�S ..a'a C„4 r_'' 5 b t :x" �,�,. • y L. ._r.3 _ 4.7 i "-' BSCCape Cod Survey Consultants 617 775-7155 P.O. Box 56 76 Enterprise Road Hyannis, Massachusetts 02601 j.. i WORKSHOP ON NEW WETLANDS REGULATIONS MARCH 10 , 1983 @ Sheraton Regal Inn Route 132 Hyannis, Ma . •r 4' . TECHNICAL FOUNDATION FOR THE REVISED REGULATIONS TO THE WETLANDS PROTECTION ACT Robert F. Daylor, P.E. Technical Report 83-1 January 5 , 1983 82-248-E 73/21 a ` A division of Boston Survey Consultants, Inc. Branch offices throughout Southeastern New England Planning Surveying Design Engineering INTRODUCTION 1 .0 GENERAL The Regulations promulgated under the Wetlands Protection Massachusetts General Laws , Chapter 131 , section 40,Acas, amended , have been revised to indicate the importance of the current understanding of the functional value of wetlands , to each of the seven statutory interests listed in the Act . Basically, wetlands have been shown to be significant to each 1.of the interests , as the definition of "significant" i s now indicated to mean that the wetland or resource area Plays a role" in the provision or protection of those „several interests . One exception to this statement is that the resource area " lands subject to flooding" is presumed significant only to the interests of flood control and storm damage prevention . Wetlands Are Significant To Seven Statutory Interests Significant. means plays a role. A resource area . is significant to an interest identified in the Act when it plays a role in the provision or protection, as appropriate, of that interest. This paper is intended to summarize the new Regulations in identifying how wetlands hplay labrole inasis reach of the seven interests , listed below: Statutory Wetland Functions M.G.L. CHAPTER 131, SECTION 40 • Public or Private Water Supply • Ground Water Supply • Flood Control • Storm Damage Prevention A Prevention of Pollution • Land Containing Shellfish 9 Fisheries , As listed in the Act, wetlands are valuable for seven interests , and the Regulations now presume that the wetlands that still remain under the jurisdiction of the Act to be significant to K each of the interests, with the one exception of- lands subject to flooding . Relationships of ' Resource Areas to Statutory Interests } e a �e Qo\ o° i� CJc ° 'o e�N\ x� � o Q J �<aG\\°5 Cc ' 01, Q a� .c 5 Banks • - • ♦ - - - ♦ - -- - - -s - • Bordering Vegetated Wetlands 0 • _ __.. _• ___ _�__..__ _ _• Land Under Waterbodies and Waterways ♦ • • « • • • r Land Subject to Flooding -- __..�__ z Jq _ 2 'y THE STATUTORY lNTERESTS 2 .0 GENERAL - This section discusses each statutory interest and the current definition of that interest under the revised Regulations . A summary is then made of how wetlands contribute to the provision or protection of that interest . 2 .1 Public or Private Water Supply Public Water Supply. . . means any source or volume of surface or ground water demonstrated to be in public use or approved for water supply pursuant to G.L. C. 111, §160 by the Division of Water Supply of the Department. or demonstrated to have a potential for public use. Private Water Supply. . . means any source or volume of surface or groundwater demonstrated to be in any private use or demonstrated to have a ; potential for private use. f Wetlands clearly play a role in the protection and provision of public or private water supply. The most obvious example, a direct relationship, is when the wetland is a public water supply such as a water supply reservoir or when the wetland is in itself a groundwater supply. Wetlands that are groundwater supplies are those where only a thin veneer of organic materials overlie materials- of high permeability, porosity, and transmissivity. . Wetlands are not two dimensional features . Their surface boundaries extend vertically into the ground . Where this vertical column is composed of aquifer materials, a public or private water supply may already be developed beneath the wetland ' s surface expression, or the potential for water supply development may exist . - 3 - a j t • Wetland ---• Tf �^ 0. • of p ;: �, - .�f?• Depression ten:',�_<�'.c••-c. "``r•..n '� i:� _+` ..4:y Direct - ' z' Relationship A_,3e from such wetlands providing the interests of 'public or private water supply, wetlands contribute to the protection of these interests . 7.ne layer of oroanic materials acts as a cap and pollutant filter , effe__i•.•=ly precluding the introduction. of pollutants deposited on t"he wetland ' s biologically active surface . Wetlands that have a direct relationship to public or private water supply are those in which public or private water _ supplies have already been developed . Also , since the 4 definition of public or private water supply includes volumes of- water demonstrated to have "potential" for use , either public or private , all wetlands would be significant to public -y water supply if they overlayed an aquifer, identified, for instance , in the Hydrological Investigation Atlas series published by the U. S. Geological Survey. The distinctions shown on these groundwater maps range from probable high yield areas, suitable for municipal wellwater development, to areas yielding water volumes suitable only for individual supplies . Presumably, almost every wetland, therefore would play a direct role in public or private waterssupply, as water 'within them or below tham would be potentially available in quantities useful for low yield domestic usages . Only where wetlands were underlain by unfractured crystalline bedrock having no recoverable water, would there be no direct public or private I water supply value . It should be noted that "lands subject to flooding a wetland under the Act, would be significant also to the water supply interests where the lands subject to flooding were underlain by € an aquifer. This wetland type would be particularly sensitive especially if the cone of influence extended to "lands subject I to flooding" which are not overlain by a protective organic mat normally associated with bordering vegetated wetlands . - 4 - Aside from wetlands having a direct relationship to public or private water supply, a more significant function is played by wetlands in an indirect manner . Wetlands play a role in reducing pollution loads , and in hydrologic buffering , shaving peaks off -of hydrographs and contributing to downstream base flow. . These .functions are of particular importance to water supplies that might be located hydrologically downstream or downgradient of a particular wetland that, in itself, has no direct public or private water supply value . The role of upstream bordering wetlands is particularly :W significant when a groundwater supply is developed in an aquifer that induces recharge from an overlying stream, which is connected to the upstream wetland . The . wetland , and indeed , each bordering vegetated wetland on the system feeding the stream being induced to recharge the wellpoint , plays a role in : o absorbing contaminants that might otherwise enter the stream system; r o reducing+ sedimentation to dow-nstream areas w},ich may adversely affect the stream bottom infiltration characteristics ; o reducing peak flow which -would adversely affect channel size , composition, and bottom characteristics within the area being induced to the wellpoint . Functionally, every bordering vegetated wetland plays a role in these important mechanisms necessary to maintain the integrity Therefore, all bordering wetlands , of the hydrologic regime. exclusive of lands subject to flooding, are significant to the interests of public and private water supply. s •r r • This bordering wetland plays a role in pubioc or Private water Supply Gone of Depression ;. Indirect Relationship 5 - r `R� 2 . 2 Groundwater SUDDly Ground Water Supply. . , means water below the earth's surface in the zone of saturation. IMN The definition of groundwater supply in the revised Regulations automatically makes bordering vegetated wetlands this interest , as the w this to e _ l �nd would not be present. if groun-water were not at or ne_r r_. wetl anA for a sioni ficant ,,-_ ; , the ground surf ace of the - F- - - of the year . In the spring of t',e Zone � Ea. w:-n groundwater levels are saturation is at the wetland s the of satur may be water above t'le surf= :- r urface . Indeed , there e n, the wetland , tuned sjr .ace water , but its origin may have been discharge groundwater . At this time , the wetland is termed a discharge wetland, or in the discharging condition . When groundwater levels drop,the zone of When is below the wetland ' s surface t p, and elevation , the wetland may be recharging the groundwater supply, allowing slow infiltration of precipitation, or of surface derived flow, to the groundwater system. Commonly, where a high capacity municipal well is located in or adjacent to a wetland area, that portion of the wetland ' s surface area that is within the cone of depression is said to be in the recharging condition, as any water is pulled from the area toward the wellpoint, 3 process knowA as induced recharge. The surface layer of soils and vegetation plays an important role for the water in the zone of saturation . The wetland physically acts as a sediment trap ning out unesireable solids prior to their entry o� the stralzone of saturation . Chemical and biological constituents are also removed through a variety of mechanisms that include physical , chemical and biological processes . Conversely, many wetlands play a role in groundwater supply ' when the wetlands are in the discharge mode. Wetland soils are relatively impermeable to vertical movement of groundwater . When groundwater levels are groundwater at levels below the pipe zom�et icigh t surface,lands may retain and emergence of groundwater laterally to a channel w thinforce the wetland system, adding to base flow from the area, but at a relatively constant rate and over an extended period of time . 6 _ i �k`httm �l,l } io�8ayd, E� 4, est.1669 inc.1924 45 William Street, Wellesley, Massachusetts 02181-4050, Telephone(617) 237-5000 ;:;; �''c [L.. 9 i . February 13, 1985 ,r REc�g�EO �' F E B 14 1985 Yarmouth Water Dept. YamrorM Pat Board of Water Commissioners - ems- 102 Union Street Yarmouth Port, MA 02675 RE: Proposed Camp Street Condominiums Gentlemen: This morning Bob Wyman, Cary Parsons and Paul Bucknam of this office met with Scott Horsley of IEP, . Inc. and Duane L. Landreth of LaTanzi, Spaulding & Landreth to discuss the Hebron Associates proposal for the construction of 76 condominium units off Camp Street in Yarmouth. We had previously commented in a January 10, 1985 letter to you on the December, 1984 report of IEP. At today' s meeting Mr. Horsley .brought along detailed site plans and other additional information in response to our letter. The major topic of discussion was the appropriateness of the evaluation of the proposal based on the nitrogen contribution from the condominium and all other areas within the zone versus the evaluation based on the CCPEDC procedure for the 21 acre parcel by itself. The result of the discussion was that the evaluation of the entire area had too many variables to make it the sole basis of evaluation for the acceptability of the project. It seemed more appropriate to evaluate the proposal based on the realities . of the situation which we see to be as follows: 1 . What is the effect on the groundwater if the project were to consist of single family homes developed in accordance with allowable zoning, and 2 . What is the effect on the groundwater if the condominiums were to be built as proposed? The plan presented by Mr. Horsley shows .a layout of the 76 units in seven structures essentially spreadout over the entire parcel . Civil& Environmental Engineering . Architecture.• Landscape Architecture Water Resources • Waste Management • Energy Conservation • Water Pollution Control Designing a Better Environrnent For 115 Years f If the 21-acre parcel (1) were to be developed into single lots there would be at least 37. house lots (21 acres x 1 . 75 = 37 lots ) (2 ) also spread out over the entire area. . There would be little difference between the two schemes in the discharge pattern of the waste into the .ground. Using the CCPEDC guidelines (2 ) 37 single family houses would add 888 lbs. of nitrogen per year into the groundwater which translates into 11. 6 ppm. In other words, current zoning results in an increase which exceeds the recommended limit (5 PPM) . If the condominiums were constructed using the IEP proposed landscape area of 25, 000 square feet and. two people per unit, the increase in nitrogen would be 805 lbs ./yr or 10 .5 ppm. . Thus, the proposed project would contribute less nitrogen than single family homes -if a population figure of two persons per unit, is accepted. If a figure of three persons per unit were used, the nitrogen loading would be 1185 lbs ./yr. or 15 . 5 ppm. All these figures consider only the 21 acres as the dilution factor. Since current zoning would allow a development that would increase the nitrogen by 888 lbs./yr.., it appears to us that this figure should be the guiding factor in deciding the use of the land. This is particularly appropriate since the physical layout of the proposed development is roughly equal to that which would occur under current zoning. . Therefore, if the condominium loading does not exceed the 888 lbs ./yr. the impact on the groundwater would not be greater than that currently allowed by zoning. Using the above criteria the Board should decide if the IEP estimate of two people per unit is acceptable. If three people per unit is used as the population figure, the .number of condo- minimum units would have to drop from 76 to 56 to maintain a maximum nitrate loading of 888 lbs/yr. Obviously, one can adjust the population number between two and three and the allowable number of units would change accordingly. E (1) IEP, Inc. Report, page 4 (2 ) CCPEDC, Water Supply Protection Project, Final Report e � r s" Whitman & Howard, Inc. • -3- Based on the long term effect of development, we would want to see nitrogen loading kept to a minimum and certainly not greater than what is allowed by current zoning, in this case the 888 lbs ./yr. We suggest that the Board attempt to have the number ,of units reduced to keep the loading within that figure. We continue to use the three persons per unit until such time as the various planning agencies adopt other criteria. The representatives of the developer agreed to install the type of catch basins that attempt to trap gasoline, oil etc. from the parking lot runoff. These basins need constant observation and maintenance but are worth the effort in protecting the groundwater. Very truly yours, WHITMAN & HOWARD, INC. Robert L. Wyman, P.E. Assistant Vice President Paul C. Bucknam, P.E. Senior Vice President RLW/PCB/lf 84-331 • 0 t4. rc ,J .I C t. e t. 1 1924 869 inc. C �t t 1 t� � i 4, William Street, Wellesley, Massachusetts 02181-4050, Telephone(617) 237-5000 March 13 , 1985 �"� h°�� Board of Water Commissioners 102 Union Street Yarmouth Port, MA 02675 RE: Chandler Gray Estates II Subdivision Gentlemen: At your request we have reviewed the IEP, Inc. report on Water Quality Evaluation of the Proposed Chandler Gray Estates II Subdivision, West Yarmouth, Massachusetts dated February 21, � 1985 . --- ----- The report -reviews the effect of the proposed subdivision on the water quality obtained from Well #14 which abuts the subdivision. The subdivision, which is all within the zone of contribution to the well, is composed of 19 single family house lots placed on 20 . 88 acres ' of land. The 19 lots vary in size from 40, 000 square feet to 58, 822 square feet with the majority of the lots close to the 40, 000 square foot size. It is interesting to note that. the developer was able to obtain 0 . 91 lots per acre of raw land as compared to 0 . 75 lots per acre of raw land 'as estimated by the Cape Cod Planning and Economic Development Commission in their Water Supply Protection Project; Final Report for area zoned for 40, 000 square foot lots . The developer of this parcel was able to place an additional three or four homes within the project. In evaluating future raw land proposals this variance in the projected density could be signifi- cant based on the land under consideration. The IEP, Inc. report analyzed the nitrogen contribution from the subdivision to the water supply using the CCPEDC Final Report method as well as the "entire zone" method. The CCPEDC method was modified to reduce the estimated 5000 square foot lawn/ fertilized area to 2000 square feet. IEP maintained the use of three persons per dwelling unit. Based on this approach IEP states that the " . . .nitrogen concentration in ground water on the I) 1 Civil 8 Environmental Engineering . Architecture • Landscape Architecture Water Resources •.Waste Management • Energy Conservation . Water Pollution Control .. ;J:i'J'igning a Sailer F-V:• i 15 Ue,3 s f -2- site will be less than 5 ppm, at 4. 64 ppm" . Using this method we obtained the same figure. When IEP analyzed the subdivision . .using the "entire zone" method the total nitrogen concentration would be 3 .37 - 3 . 51 ppm. 'We did not attempt to check their figures using this approach. Based on a memo from the Board of Health to the Planning Board dated March 5, 1985, the Board of Health granted their approval of the subdivision based on. the following conditions : 1 ) Maximum of three (3 ) bedrooms per lot. 2 ) Maximum grass/fertilized area not to exceed 1, 500 square feet/lot, and so noted on the plan. 3 ) Final certification of lawn area must be certified by a Registered Land Surveyor or Registered Professional Engineer, with a copy of such submitted to the Health Agent prior to Occupancy Permits being issued by the Building Department. 4) All of the above (1, 2 , & 3 ) are required for the protection of the Town' s Public Water Supply Wells . 5 ) Items 1, 2 , 3 , and 4 are to be stated in the covenant which is to be recorded at the Barnstable County Registry of Deeds, on the subdivision plan, and on each individual subsurface sewage disposal plan. Using the constraints set by the Board of Health and the CCPEDC method, the increased nitrogen concentration in the groundwater under the site will be 4.43 ppm. Assumptions : 3 people/house and 1500 sq. ft. lawn Analysis: 3 people x 5#/person x 19 houses. = 285# 1500 sq. ft. x 9#/5000 sq. ft. x 19 houses 51 . 3# 5000 sq. ft. Total N/Year = 336 .3# 336 .3 #/yr converts to = 4.43 ppm for 20 .88 Ac. There has .been considerable discussion about the number of persons per dwelling unit used in the calculations . Title V (septic system design) provides for two persons per bedroom in its analysis . There has also been some questions regarding the monitoring and enforcement of restrictions on the size of lawn/fertilized areas and number of bedrooms in a home, particularly in areas of large lots . Because of these variables we have prepared a table for yW�,. Stan & toward. Inc. _3- this subdivision with the number of persons per unit varying from three to six and a lawn/fertilized area of 1000 square feet to 15, 000 square feet. The table shows the total number of pounds of nitrogen for the various combinations and can be converted into ppm by multiplying the number in the table by 0 . 01316 . Example (1 ) 3 people per unit 5000 sq. ft. of lawn from the table: 456# x . 01316 = 6 . 00 ppm N Example (2 ) 6 people per unit 1500 sq. ft. of lawn from the table: 621 .3# x . 01316 = 8 . 18 .ppm N Example (3 ) 3 people per unit 1500 sq. ft. of lawn from the table: 336 .3# x . 01316 = 4.43 ppm N The table noted above was developed for this project because of the number of variables that came under discussion during the analysis . Use of the table as noted above will allow you to make quick comparisons of various scenarios . We are developing another table, which can be applied in a similar fashion to other projects . In conclusion, the subdivision as proposed with the restrictions noted complies with our understanding of the intent of the CCPEDC Final Report PROVIDING the restrictions are enforced Should you have any questions, please call . Very truly yours, " WHI'IMAN & HOWARD, INC. PaQ aLr-� 2�Cw Paul C. Bucknam, P.E. e � Senior Vice President OF ROBERT, rl U. QM «IF1N v WY wt ` p NO-27284 O �V�0zFR ; f, Robert L. Wyman, P.E. Assistant Vice President PCB/RLW/lf 84-331 , K s' CHANDLER GRAY ESTATES. II SUBDIVISION TOTAL NITROGEN LOADING IN POUNDS FOR 19 HOUSE LOTS & 20 . 88 .ACRES NUMBER OF PEOPLE PER DWELLING Lawn/Fert. 3 4 5 6 Area Square Feet 1 , 000 319 . 2 414 . 2 509 . 2 604 . 2 1 , 500 336 . 3 431 . 3 526 . 3 621 . 3 2 , 000 353 . 4 448 . 4 543 . 4 638 . 4 3 , 000 387 . 6 4.82 . 6 577 . 6 -672 . 6 4 , 000 421 . 8 516 . 8 611 . 8 706 . 8 5., 000 456 . 0 551 . 0 646 . 0 741 . 0 6 , 000 490 . 2 585 . 2 680 . 2 775 . 2 71000 524 . 4 619 . 4 714 . 4 809 . 4 81000 558 . 6 653 . 6 748 . 6 837 . 9 9 , 000 592. 8 687 . 8 782 . 8 877 . 8 10 , 000 627 . 0 . 722 . 0 817 . 0 912. 0 12 , 000 695 . 4 790 . 4 885 . 4 980 . 4 15, 000 798 . 0 893 . 0 988 . 0 1 , 083 . 0 March 8,•1985 Ur. Bruce Murphy Health Agent = Town-of Yarmouth Town Hell South Yarmouth, MA. 02664 Re: Camp StreetCondominiums, Oroun4.Vat ot,Protection` Dear Lit. Nurphyt Enclosed s a draft cosy of the Groundwater o er tt s dree Protection Plan; prepared for the To*n of Barnstable,by SBA cone This stud tedetiaes the zones of contri u arnatable a fields on mall y 8. Y- ,developed by. the Cape Cod Planning conom! evelopment ommisgion. We will send ..you a map.of the iedefina sea when r Planning. Department'.makes them.available. - Zone No.J extends into Yartnoutb and-in a site of the proposed Camp street 'Condom SBA's 'calcula icat t-nitrate concentrations tvitbin this zone_ at saturation denslty . gre xce he 5 mg./t standard recommended by_ the Cape. 'Cod F g d'r Bcon` is lopmerit Co pissign. (See our. correspondence dated De mber 27, 1984. Recognizing the imports a of limiting ni r 'gen discharges in.thie zone.-to*acceptdble -: levels, the 'Bo4kr4.of 1i odopte.d .aa„ teri�n regulation :wDicti becems,eft+sctive February 21; 19 cop this regu on is enclosed. .: .The' Wat uality` Advisory Committee flee `sot changed its position prdviously outlined 1 our letters you dated.October 25, '1984, .and December 27. .1984, concern the Camp 8tr Condominiums. Please c tact Peter Ry r, Office of-, Planning and Development;`Old Town-hall, 397 Main set,"Hya s 0260i. telephone No,775-1120, extension 141, if you.wish- to- purcba opies of the Oroundwater and Water Resource Protection- Plan.- very truly yours; John 14. Kelly' Chairman = WATER QUALITY ADVISORY COMMITTEE JMK/min encl. 3 cc$ Mr.-Petei_Ryder Mto Nartia Flynn '. •Ye ° o TOWN OF YARMOUT' H SOUTH YARMOUTH MASSACHUSETTS 02664 " MATTACH ES ' �RPoRAtC��6 BOARD OF HEALTH March 1, 1985 John Kelly, Chairman Barnstable Water Quality Advisory Committee Town Office Building Main Street Hyannis, Massachusetts 02601 Re: Proposed Camp Street Condominiums Dear Mr. Kelly: This letter is in regard to the above captioned subject matter, of which your committee expressed a concern to condominiums being developed, at the Camp Street location, in their letter of October 25, 1984. The primary concern being the serious health problems associated with' excessive nitrates that could be produced in the drinking water. Within your letter it was stated that S.E:A. Consultants were in the process of completing a comprehensive groundwater study within the town of Barnstable. The study is to include evaluations and recommendations for controlling condominium density. It is my understanding that S.E.A. Consultants has released, in draft form, the groundwater study report. Therefore, would you please forward a copy of S.E.A.'s report, and your committee's detailed recommendations with regard to the Camp Street Condominiums. In addition, would it also be possible for this department to obtain several copies of S.E.A.'s final report to review along with Yarmouth's !r Water Quality Advisory Committee. I believe there is much valuable information that can be learned, and implemented into Yarmouth's Acquifer Management Program, in conjunction with Barnstable's programs to ensure that proper steps are taken for the protection of groundwater flows between the two towns.- Thank you for your anticipated cooperation, and prompt response, in this matter, and should you have any questions, please do not hesitate to contact me. Very truly yours, Bruce Murphy, R. ., MP Health Agent, Town of armouth CC: Chairman, Board of Health Executive Secretary BM/av Chairman, WQAC file I` i TOWN OF YARMOUTH ( :01� SOU-H YAR.NIOU I-1-I 1iASS;�CHUSEITS 02664 MATTACHEESE BOARD OF HEALTH January 16, 1985 Memo To: Board of Health From: Bruce Murphy, Health Agent Re: Whitman & Howard Review of Proposed Camp Street Condominiums Hebron Associates Enclosed for your review/comments, etc., is a copy of Whitman & Howard's response, dated 1/10/85, to the Board of Health's request to the Water Department, Water Com- missioners, and their consultants, to review the Nitrate loading and the I.E.P. Report for the above captioned subject matter. BM/av cc: Robert C. Lawton, Jr., Executive Secretary David Oman, Construction Manager for Hebron Associates JJohn Kelly, Barnstable WQAC Ralph Cipolla, Jr., Chairman, Yarmouth WQAC f ile Inch Whitman & Howard Report (; pgs) f r n ee iPrp n' 10;4 45 William Street. Wellesley. MassaChusclts 02181-4050, Telephone(617) 237-5000 1 I +• January 10, 1985 Board of Water Commissioners 102 Union Street Yarmouth Port, MA 02675 RE: Proposed Camp Street Condominiums 1 ' Gentlemen: We have been asked by the Board to review and comment on the report entitled "Water Quality Evaluation of the Proposed Camp Street Condominiums, West Yarmouth, Massachusetts, December 17 , 1984" by IEP, Inc. In the report the nitrate problem is addressed based on two assumptions . 'The ass.u.�rrptions by IEP and our comments relative to them are as follows: A. FIRST ASSU7, PTION BY IEP: The nitrate loading from this particular parcel should not be considered individually but considered in conjunction with the loading on the entire zone of contribution (2199 acres ) . The basic idea advanced by IEP is that if the loading from this development II does not push the total loading in the whole zone of contribution above the CCPEDC recommended loading of 16 pounds per 40 , 000 so-. it. per year, then the development , should be approved. COI U,1ENTS 1 . Based on the data shown on Page 6 of the report, it is - I� 1 not clear to us whether or not the calculations include ! an N/Year for fertilizer used in industrial and con-aTle'rcial areas including. the airport r:hich may also � ! use deicing materials containing nitrates . 2 . The total recorta-ner-ded mayimum nitrate loading for the whole zone of contribution is 38, 315 pounds per year; 2199 acres x 4355E t2/acre = 95 , 788, 440 ft, -in zone of contribution ( 95 , 728, 440 ft2/40, 000 ft2 ) x 16 lbs nitrate per year = 38 , 315 lbs . n-,--;—e per year for entire zone of contribution. Civt;& Environmental Eny'lnee.ing Landis--ape Arch.iecture 1':c:. c:.::;:J:;e� • 1:'as:E l.'c'c1$'c-, • E.'.c:Qj��'.5='cs.i�n • 1•:�:c,r Pv?iu �� . : -2- 3 . At the present zoning and land use the maximum theoretical nitrate discharge which could occur in the zone of contribution without Camp Street Condos is 28, 290 lbs per year, and the Camp Street Condos will add 805 lbs nitrate per year. Thus, the total nitrate theoretically possible for_ discharge in the zone of contribution would be 29, 095 lbs per year as shown on Page 6 of the IEP Report. 4. The results of the calculations on Page 6 show that the total possible nitrate loading in the zone is 12 . 14 lbs . N/Yr/40, 000 sq. ft. or 76% of the recommended maximum loading. This figure compares to: 29095 lbs . for existing + condos _76/ 38315 lbs . maximum recommended for entire zone Because the total calculated is less than the maximum recommended IEP recommends approval of the project. 5. IEP is stating that because of the calculations shown above, the development should be allowed a nitrate loading rate that is more than 200% (35 . 3-16 ) of the recommended loading. The basis for the statement is the assumption that if the zone of contribution for the well in question were at saturation development under present zoning and land use, the addition of Camp Street Condomimium would only push total zone loading to 76% of that recommended. 6. There is no guarantee that land use or zoning will stay, as it is presently. ;f 7 . IEP is ;proposing to use, at Camp Street Condos, nitrate loading allocation that would normally be available for use on some other parcel of property within the zone. Essentially they are saying that since no one else on another parcel can use the extra loading allocation under present zoning and land use, let Camp Street Condos double the recommended nitrate discharge . This means that some other property owner might h-ave to be denied development because Camp Street Condos had already used up available nitrate loading capacity in the zone of contribution. Zoning and land use in the zone of contribution could change at any time. 111i�I; i:I1 .� flklFviodj Inc. -3- SUI�U IARY OF COMENTS Under the- first assumption used by IEP, there could be loss of future development rights elsewhere in the zone of contribution if the Camp Street Condos are allowed to discharge nitrate on their site at more than twice the recommended level . B. SECOND ASSUMPTION BY IEP: It -is assumed that the only groundwater quality to be protected is that water being withdrawn from the Maher wellfield. When groundwater from everywhere else in the zone of contribution is mixed with groundwater from the Camp Street Condos land, the Maher wellfield water should stay below the 10 mg/L state and federal drinking water limit for nitrate . COHMENTS 1 . The effect of the Camp Street Condos on groundwater between the Condos and the wellfield must be considered. Commonly a plume of contaminants such as nitrate, elongates downgradient from the source, but tends to remain narrow and not much wider than the source area. There is not much lateral dispersion and the plume will normally exist as long cigar-shaped area of concentrated contaminant down gradient from the source. A typical example of this on Cape Cod is found in the U . S . Geological Survey Study of the Otis Air Force Base nitrate plume and an effected well in Falmouth, (USGS 82-274) . 2 . The nitrate concentration in a plume from Camp Street Condos, - generated by twice the . r.ecommended nitrate , loading rate, could likely exceed 5 ppm. The limit of 5 ppm is recommended by CCPEDC. CCPEDC calculated that the nitrate concentration should be kept below 5 ppm when dealing with housing density as a means of staying - below the 10 ppm drinking water quality limit. The CCPEDC =calculated that a nitrate: loading rate of 16 lbs . per 40, 000 sq. ft. per year would equal roughly a concentration+ of 5 ppm in Cape groundwater. Thus, 16 lbs . nitrate per 40, 000 sq. ft. per year can be thought of as producing a nitrate concentration of 5 PPm in Cape groundwater. 3 . If theCamp Street Condos are allowed to double the nitrate loading rate, the plume of contaminants flowing off their property will probably exceed the 5 ppm reco,iJner_ded limit. In fact, it ray well exceed the state drill' i ng water l im:.t of 10 ppm. i �llf Ill.itll �c Qi0wal-d! I I1C. 6 . -4- If this plume passes under neighboring property. it might well limit the amount of nitrate loading and thus the development available to that property owner regardless of zoning. It would certainly limit the use of neighboring groundwater resources . SUDUYARY OF COTUIENTS The loading of nitrate from the condos will most likely cause a plume that will contain nitrate at over the recommended concentration. In view of the above, we feel that the proposed project would be detrimental to the overall groundwater quality based on the recommiendation of the CCPEDC. Should you have any questions, or if we can be of further help to you in this matter, please give us a call . Very truly yours, kHITMAN & HOWARD, INC. �V. ory�� Robert L. Wyman, P .E. Assistant Vice President r - (,-'J. Cary Parsons Geologist RLW/lf 84-331 f� � o TOWN OF YARMOUTH SOUTH YAR111OUTH AiASSACHUSETTS 02664 MATTACM ES BOARD OF HEALTH November'27, 1984 Memo To: Town of Yarmouth Appeal #: ,2130 Board of Appeals From: Bruce Murphy, Health Agent Re: Petition of: Hebron Associates Camp Street Condominiums On September 13, 1984, this department approved a subsurface sewage disposal system for the above location, inthat it met all state and local subsurface sewage disposal re- gulations/requirements.. Due to the fact that a portion of the subsurface sewage disposal system will be located within the town of Barnstable, a copy of the approved Engineered Plan was forwarded to the Barnstable Health Department. Upon receipt of such, the plans were referred to. the Barnstable Water Quality Advisory Committee. The Town of Barnstable responded by letter, dated October 25, 1984 (copy enclosed), which, in part, stated that the proposed development exceeds the recommendations of their Water Resources Planners, relating to population density in Nitrate Loading. They also have concerns of nitrate contamination of public water supply wells. They requested that the Yarmouth Board of Health re-consider its approval until March 1, 1985, when their Groundwater Study is to be completed, as the town of Barnstable has a concern of the health and well-being of its citizens. f� Upon receipt of this letter, the Yarmouth Board of Health referred the matter, for' n= put, to Yarmouth's Water Commissioners, Planning Board, Water Quality Advisory Com- mittee, and to the Cape Cod Planning and Economic Development Commission [CCPEDC). , The Water Commissioners responded by letter, dated November 19, 1984 (copy enclosed), stating, in part, that the questions raised are too technical in nature and so far-reaching that it should also be reviewed by the Town's Engineering Consultants, Whitman and Howard. CCPEDC responded by letter, dated November 26, 1984 (copy enclosed), in which they calculated the final nitrate concentration as being 15.5 ppm which exceeds the State's Safe ate.. Drinking Water Acts standard of 10 ppm. WQAC stated, at their meeting on November 14, 1984, that if the final nitrate exceeded 10 ppm, the project should be reconsidered and possibly scaled down. As of this date, the Planning Board has not responded to the above cited request of the Board of Health. Board of Appeals - #2130 November 27, 1984 Page 2. Therefore, the Board of Health is now in the process of reconsidering the permits that were previously issued. The Board of Health will be hearing the matter at their meeting scheduled for December 17, 1984, at which time appropriate action will be considered. BM/av cc: Board of Health Board of Selectmen Executive Secretary Water Department/Commissioners WQAC Planning Board CCPEDC Building Inspector Engineering Department ✓Barnstable Health Department David Oman, Construction Mgr/Hebron Associates file r TOWN OF BARNSTABLE WATER QUALITY ADVISORY COMMITTEE 367 Main Street Hyannis, Mass. 02601 October 25, 1984 Mr. Bruce Murphy, Health Agent Town of Yarmouth Board of Health 1146 Route 28 South Yarmouth, MA 02664 Dear Mr. Murphy: The Town of Barnstable Water Quality Advisory Committee feels that the proposed plan for the Camp Street;Condominiums presents a potential health threat to the residents of the Town of Barnstable. This development is located within the zones of contribution of eight public supply wells in the Town of Barnstable. The proposed 76 units totalling 136 bedrooms would produce approximately 97 lbs. N/40,000 sq. ft. This is six times greater than the 16 lbs. N/40,000 sq. ft. recommended as a standard by the final Water Quality Management Plan/EIS for Cape Cod. It is our strong recommendation that the number of units be reduced to contain an overall total of no more than 36 bedrooms. This reduction in units would produce a nitrogen loading of 25.7 pounds N/40,000 square feet utilizing the formula devised by the Cape Cod Planning and Economic Development Commission; which still exceeds the recommendations of their Water Resource Planners, relating to population density and nitrate loading, but would appear to be a reasonable compromise. The daily sewage flow from this project would be 15,320 gallons based on criteria established by Title 5 of the State Environmental Code. A package treatment plant capable of tertiary treatment with complete nitrate removal could be a viable alternative to on-site septic systems if approved by D.E.Q.E. The Town of Barnstable at its November 1983 Town Meeting unanimously passed an article for a moratorium on all new subdivisions until January, 1985, primarily because of the concern of nitrate contamination of public wells. The serious health problems associated with excessive nitrates in drinking I water are well documented. S.E.A. consultants are in the process of completing a comprehensive study of the groundwater in the Town of Barnstable. This study will be completed prior to the expiration of the moratorium, which may be extended until March 1, 1985. Subdivision and condominium density as it relates to nitrates and other pollutants from on-site sewage disposal systems will be fully evaluated and recommendations controlling density will-be made. We would appreciate your consideration in this matter, so vital to the health and well-being of the citizens of Barnstable. Sincerely, iterQuality A �. .�MKlly, ChaliZry dviso �Committee TOWN OF YARMOUTH C ; ' WATER DEPARTMENT � 1 6�.. 102 UNION STREET YARMOUTH PORT. MASS. 02675 WATER COMMISSIONERS THE BOARD Or WATER COMMISSIONERS MEETS EVERY MONOAY FREDERICK J. THACHER AT 7:30 P.M. AT UNION STREET O►►ICE ROGER G. EDWARDS. JR. THOMAS E. KELLEY SUPERINTENDENT PAUL WILSON TO: Yarmouth Board of Health FROM: Board of Water Commissioners SUBJECT: Memo of November 9, 1984 RE: Camp Street Condo (Hebron Associates) DATE: November 19, 1984 The Board of Water Commissioners feels that the questions raised in this memo are too technical in nature and so far-reaching in impact that it would be inappropriate to offer any comments at this time on such short notice. The Board is working with its consultants in addressing your concerns, but it is doubtful that any meaningful studies can even be completed before the November 28th hearing date. 1 t Based on this the only comment this Board can offer at this time is to suggest that the final decision be delayed for at least a minimum of thirty (30) days. Yours very truly, Torof Water Commi Toners 4 - = CAPE COD PLANNING AND ECONOMIC DEVELOPMENT COMMISSION 1ST DISTRICT COURT HOUSE, BARNSTABLE, MASSACHUSETTS 02630 TELEPHONE: 617-362-2511 November 26, 1984 Mr. Bruce Murphy Health Agent Town Hall S. Yarmouth, bM Dear Bruce: I have reviewed the nitrogen loading figures for the Camp Street Condominiums presented to you by the Barnstable Water Quality Advisory Committee. While I . agree that nitrogen loading greatly exceeds CCPEDC recommended limits, my figures differ from those arrived at by Barnstable. Compared to a-loading of 97 lbs/40,000 SF, I have calculated a loading of 47.6 lbs/40,000 SF. Below are the details of the calculations: 76 units x 3 people/unit x 5 lbs N/person = 1140 lbs N/yr 1140 lbs N/yr/22 acres = 51.82 lbs/acre = 47.S8 lbs/40,000 SF/yr 1140 lbs -N/year .k "45'4;000 'mg/Ib = 15.5 ppm (1092 gal/day/acre) (22 acres) (365 days) (3.8 liters/gal) final concentration Attached is the worksheet for the Nitrogen Loading Formula which provides more - detail on the formula'sassumptions. Please note that the. Camp Street figures may be even greater as lawn fertilizer has not been accounted for. ' CCPEDC recommends that nitrogen loading should not exceed 16 lbs/40,000 SF in zones of contribution to public supply wells. If I can provide you with further information, please give me a call, Yours, / Gabrielle C. Belfit Hydorlogist GBC:bg - Enc. cc: Yarmouth Water Quality Advisory Committee Yarmouth Water Department t/- Barnstable Board of Health Barnstable County Health Dept. w • kMAI CAPE %4 20 / • • CID _ •. ..:��► 14 Ewls LEGEND 0 EXISTING WELL - • PROPOSED FIG. 4.2 ZONES .__^. . WATER SUPPLY 4-7 i� NITROGEN LOADING FOWMULA I. Assumptions Nitrogen loading sewage . . . . . . . 5 lb/person/ ear lawn fertilizer . . 9 lb/5000 ft lawn/year Recharge dilution 40,000 ft2 lot @ 16"/year = 398,580 gal/year Occupancy 3 persons/unit Lawn area 5000 ft2 lawn/lot II. Formula Nitrogen load (lb x 454,000 mg/lb = NO3 concentration in pp 1,092 gal/day/ 0,000 fty x 365 days x 3.8 liters/gal - III. Example Proposed development of 50 units on 25 acres of land including 2 acres of lawn area. _ Nitrogen load sewage: 50 units x 3 persons/unit x 5 lb/person/year = 750 lb/year lawn area: 80,000 ft2 x 9lb/5000 ft2 = 144 Total N load: 894 lb/year 11 ppm final nitrate 894 lb -N/year x 454,000 mg/lb = concentration in ' (1092 gal/day/acre) (25 acres) (365 days) (3.8 liters/gal) groundwater' 1 i am acm Pic. ' CONSULTING ENVIRONMENTAL SCIENTISTS TOWN OF YARMOUTH SOUTH YARMOUTH MASSACHUSETTS 02664 MATTA M ES ' f�,TO 11 BOARD OF HEALTH December 20, 1984 Mr. John Kelly, Health Agent Town Office Building 367 Main Street Hyannis MA 02601 RE: HEBRON ASSOCIATES DEVELOPMENT, CAMP STREET, WEST YARMOUTH MA Dear John: The Board of Health is still reviewing the above pro- ject in regards to nitrate loading, as brought forth in your letter of October 25, 1984, which you expressed concerns regarding nitrates and other pollutants from the on-site sewage disposal systems at the above location. Would you please review the report from I.P.E. and forward your committees and consultants written review of such. Would you please also forward your report as soon as possible, as the Board of Health is presently awaiting our town's Board of Water Commissioners con- sultants report. If you have any further questions, please do not hesitate to contact me at the Health Department at 398-2231, ext.36. Thank you for your anticipated cooperation in regards to the above matter. Sincerely, Zu—ce- Murphy, R.S., MPH Town of Yarmouth BM/mr cc: file Chairman, Board of Health CONSULTING ENVIRONMENTAL SCIENTISTS ® COURT HOUSE SQUARE 3179 MAIN STREET (ROUTE 6A) Inc. P.O. BOX 434. BARNSTABLE, MA 02630 (61 7) 362-6262 18 December 1984 John Kelley, Chairman Barnstable Water Quality Advisory Committee Town Hall Hyannis, MA 02601 Dear John: Last night I met with the Yarmouth Board of Health to discuss our findings. At their request, I am forwarding the enclosed report for your review. Please contact me if you have any questions or comments regarding our work. Sincerely, Scott W. Horsley Senior Environmental Scientist SWH:pmg Enclosure cc: Board of Health, Town of Yarmouth Water Commissioners, Town of Yarmouth CORPORATE OFFICE 6 MAPLE STREET-P.O. BOX 780, NORTHBOROUGH, MA 01 532 I Ml �c inc. ' WATER QUALITY EVALUATION OF THE PROPOSED CAMP STREET CONDOMINIUMS West Yarmouth, Massachusetts December 17, 1984 w MI �c inc. Scope of Work IEP has been retained by Oman Construction Company to assess the water ' quality impacts of the proposed Camp Street Condominiums upon the Barnstable Water Company's wellfield located east of Old Yarmouth Road. Hydrogeology ' The proposed Camp Street site is located on the Barnstable outwash, a permeable, unconsolidated deposit of sand, silt, and gravels. The ' site is situated approximately 15 - 20 feet above the water table which 1 exists as an unconfined aquifer. Ground water flows through the site in a general southeastern direction. The Barnstable Water Company's Maher ' wellfield which pumps an average of one million gallons per day of ground water is located 4,200 feet to the southwest of the Camp Street site. ' Maps prepared by the Cape Cod Planning & Economic Development Commission show- ",, that the site lies within a zone of contribution to the Barnstable wellfield (see Figure #1) . The zone comprises an area of ' approximately 2,199 acres of which eighty-four (84) per cent is in the Town of Barnstable. A zone of contribution is based upon an assumption ' that the volume of water pumped from a public supply well is directly proportional to an area of land which recharges an equal amount of water as derived from precipitation. While this methodology does not indicate the ' exact delineation of a zone of depression, it does represent a first approximation for planning use. This information shows that water recharged from the Camp Street vicinity supplies a portion of ground ' water which is supplemented by water recharged on the entire zone to the well. - 1 - ( t�: I' ...... iYl '✓. f',' .�,• '�J� lh' '•r 'J. .F• f r t'• ,:. .a i' n ., •••t 'r t• 'tik! :•A f:::•: yp� y� l r .1 r. •v. ?d' `i. ;sly,;,::• 1'.• A yAyr^ ` ..�• 1.1 r: d' �S• 'yy11•f l' A •' � SI •r. } R• j :4. r.. '•a .1. '•y.r: M 7J •;1' r' YY.•. its r• �;i� { J :x. izs S'=ti'• .1. k 43 :1r1 t .i• .+� .1. :v r. .l: 3't .:.. .ht 'tt. 5: ':0 :l }.. L .4{ a .•t .:.::.::... . ::.::..:.:. t 1• �y y •4. 'i A` .i x:ii•I'.. •1 i •.1 f� J r }, � •'A rI :`7. ':*•. r, 1.•f• �i Y p 1 :yr i i� _ nn r i f Y, .1 •,. 1. f • y r 7 •v :ham••• \• t .lc f .1- t• 1 .r:• +1 i' ,1e'. t r: 1:= .i 1 F I 1 _ I• :,�:. ,•, 1I11pt1f. '' :Y'.,'ri�,':1;�r ii,k;y::.�:'.-" ':,'•ii,r P•• 't � II PO Sji Er � - A,`• _.-friar 11a bo T1 FIGURE #1 Location of proposed Camp Street Condominium and zone of contribution to the Maher. we7-:Lfield. ' Scale 1" = 2,000' f ' ICrinc. Thus, developmental impacts to the Barnstable Water Company (BWC) ' wellfield.must be evaluated by .assessing the entire zone rather .than an individual parcel. ' Water Quality Assessment Wastewater from the Camp Street Condominiums will be disposed via ' conventional septic systems designed in accordance. with the Massachusetts Environmental Code (Title V) . Twenty-four (24) ' septic systems are planned to service seventy-six (76) condo minium ' units (17 one-hedr.00m units and 59 two-bedroom units) : The location of these septic systems throughout the site will disperse the waste- water instead of concentrating the effluent into one large disposal system. However, some depletion of dissolved oxygen is expected in ' the round water. underl in the site. This ma .affect the mobiliza- tion Y g y b ' tion of materials such as phosphorus, iron, and manganese. As ground water moves away from the site, some oxygenation will occur ' affecting the precipitation of phosphorus, iron, and manganese in the soils. The amount of these materials which might eventually reach ' the BWC wellf.ield are expected to be negligible. None of these three P ' chemicals represent potential health hazards. ' The hrinc -ple waror qun.1-4-ty issue which has been raised is nitrate- it i_t rogerr con.trrm ln;:i I i-ori. A report prepared by the Cape Cod Planning ' F Gcorrouiic Development Commission (CCPEDC) entitled Water Supply rotecL-ion Pro,jecr- F_i.n�i.l t;eport (1979) outlines methods of assessing ' iri.trogen load fq" from various land uses. This report suggests that "ni.trogen .loadhin should not exceed sixteen pounds/40,000 square feet - 3 - r 1 ' lCrinc. i in a water supply recharge area" (p. I-7) . Assuming such a density is maintained, throughout a zone of contribution, nitrate-nitrogen ' concentrations of 5.0 parts per million (half of the Massachusetts drinking water standard) will be maintained at the well. Nitrogen loading calculations for the proposed project were calculated. g g P P P J ' An occupancy rate of two (2) persons per condominium unit (instead of three [3] persons per single family home) was utilized based upon the ' assumption that condominium occupancy is expected to be two-thirds (2/3) that of single family homes. This assumption is supported- by water usage figures of single family home units versus multi-family ' units over a three (3) year period compiled by the Harwich Water Department. These calculations result in .a nitrogen loading of ' 760 pounds of nitrogen per year across the twenty-one acre parcel of land for an overall density of 33.2 pounds of nitrogen/year/40,000 square ' feet. Lawn fertilizers are expected to be used on approximately ' 25,000 square feet of land within the parcel. -Including the CCPEDC estimate of nine pounds of nitrogen per year per 5,000 square feet of ' lawn area, this increases the nitrogen loading to 805 pounds per•year or 35.3 pounds of nitrogen/year/40,000 square feet. ' d' d her recommended CCPEDC loading Although this loading rate exceeds t ec g ' rate, an assessment of the nitrogen loading from other parcels of land within the BWC zone of contribution must be considered to ' - 4 - ' inc. understand the ultimate effects on the BWC wellfield. To accomplish this, IEP undertook a land use inventory within the BWC zone of ' contribution and estimated nitrogen loading under a future "saturation" status of development of land. Land ownership maps and zoning maps were obtained from the Barnstable and Yarmouth Planning Departments. A sewer map was also obtained from the ' Barnstable Department of Public Works. ' Approximately thirty-five (35) per cent of the land within the zone of contribution is comprised of Barnstable Water Company holdings, ' Barnstable Fire District holdings, Barnstable Municipal Airport holdings, and severed portions of Hyannis. These land areas contribute little nitrogen to Wound water and are unlikely to in ' the future. The remainder of the land within the zone of contribution includes approximately 500 acres of two-acre .zoned indus.t.r.ial :land.-.. ' (Barnstable) , approximately 259 acres of commercially zoned land (Barnstable and Yarmouth) , and 178 acres of residential land (Barnstable and Yarmouth. Nitrogen loading estimates for industrial land were derived from the CCPEDC's Water Supply Protection Program Final Report (p. Y-8) . Nitrogen, loading estimates for commercial land were derived from the Facility Plan for Wastewater and Septage Management prepared for the Town of Yarmouth by Wright-Pierce, Inca (1984) , p. 3-20. - 5 - i I C inc. The following table is a summary of our nitrogen loading estimates ' for the BWC zone of contribution: Industrial 500 acres @ 4.7-15 lb. N/Acre/Year = 2,350-7,500 lb. N/Year ' Commercial (unsewered) 79 + 35 = 114 @ 69 lb. N/Year/Property - 7,866.1b. N/Year Commercial (sewered) 160 acres @ 0 lb./Acre/Year = -0- Residential (unsewered) 35 + 237 = 272 houses ' @ 24 lb./Year/House = 6,528 lb. N/Year Residential Undeveloped Land Zoned @ 20,000 sq. ft. - 60 acres @ 52 lb. N/Acre/Year = 3,120 lb. N/Year Residential (sewered) 80 acres = 364 lots @ 9 lb. (fertilizer)/Lot/Year = 3,276 lb. N/Year Lakes & Ponds 60 acres ) = -0- All of these Town of Barnstable 10 acres ) lands were = -0- assumed to Airport (sewered) 364 acres ) contribute = -0- ' ) negligible Barnstable Fire District 55 acres ) amounts of - -0- nitrogen. Barnstable Water Company 80 acres ) = -0- ' 23,140 - 28,290 lb. N/Year i 28,290 lb. N/Year t 2,200 acres =12.86 lb. N/Acre/Year = 11.81 lbs. N/Year/40,000 sq. feet (Without Camp Street Condominium Project) 28,290 + 805 lb. N/Year = 29,095 lb.. N/Year t 2,200 acres = 13.22 lb. N/Acre/Yeas = 12.14 lb. N/Year/40,000 sq. feet ' (With Camp Street Condominium Project) ' - 6 - ' ICrinc. Conclusions: 1 The proposed Camp Street Condominium project will contribute 805 pounds of nitrogen annually to the BWC zone of contribution. This represents, n three (3) per cent of the toal nitrogen loading in the zone of ' contribution. Assuming the development of all of the remaining land within the zone, nitrogen loading will be 11.81 pounds per year per 40,000 square feet. The proposed project will increase this loading to ' 12.14 pounds per year per 40,000 square feet. These loadings are substantially lower than the CCPEDC recommendation of 16 pounds N/Year/ 40,000 square feet. I ' - 7 - TOWN OF BARNSTABLE WATER QUALITY ADVISORY COi+ MITTEE 367 Main Street Hyannis, Mass. 02601 December 27, 1984 Mr. Bruce Murphy Town of Yarmouth Health Agent Town Hall South Yarmouth, MA 02664 Dear Bruce : The Water-Quality Advisory Committee has reviewed. the report by IEP, Inc. , "Water_Quality Evaluation of the Proposed Camp Street Condominiums, West Yarmouth, Massachusetts" , dated December 17, 1984. We would like to offer the following observations on this report: p. 4. "An occupancy rate of two(2)' persons per condominium unit .(instead of i three(3) persons per single .family home) was utilized. . ." Title V bases sewage flow rates upon the number .of bedrooms with the assumption that two persons will occupy each bedroom. In addition, IEP's calculations do not take into account the obvious increase in summer occupancy on Cape Cod. Our original calculations.were based upon Title V standards; the Cape Cod Planning and Economic Development Commission in their November 26 correspondence used a standard of 3 persons per unit. The CCPEDC. calculations would appear to incorporate the most reasonable assumptions. p. 6. Summary of nitrogen loading estimates from the BWC zone of contribution. This table does not take into account nitrogen loadings from roadways and other impervious surfaces. Studies by the. Board of Health and Conservation Commission . have -shown that sources such as bird and dog feces, leaf litter,, and putrefaction . of organic matter all contribute nutrient loadings to catch basins and runoff from paved surfaces. More importantly, IEP'§ calculations are based upon the zones of contribution defined by CCPEDC in 1982. The groundwater management study for the Town of Barnstable, now being finalized by SEA consultants, includes a redefinition of these zones based upon computer modeling. Therefore, the calculations -contained in the report are _. based upon outdated information. Moreover, they do not take into consideration a major source of nitrogen loading_within 'this particular zone of contribution, the Hyannis Water Pollution Control Facility. According to SEA's calculations, the nitrogen loading within this zone at saturation development, and with the sewage treatment plant operating at full capacity, will be 7.1 parts per million, in excess of the 5 ppm recommended by CCPEDC to ensure compliance with the Safe Drinking Water Act. Therefore, any additional major 'nitrogen loading from a source such as the proposed Camp Street condominiums will have a potentially adverse impact upon groundwater supply. Based upon these considerations, the Water Quality Advisory Committee recommends that the number of units within the project be reduced, as per our correspondence of October 25, 1984. rM TOWN OF BARNSTABLE WATER QUALITY ADVISORY COMMITTEE - p. 2 Thank you for you consideration. We are extremely happy with your cooperation and concern for the Town of Barnstable, and hope That we can continue to cooperate in the future to protect our common drinking water supply. Sincerely yours, hn Kelly 4?E Chairman JK/dr TOWN OF BARNSTABLE a WATER QUALITY ADVISORY COMMITTEE • 367 Main Street Hyannis, Mass. 02601 December 27, 1984 Mr. Bruce Murphy Town of Yarmouth Health Agent Town Hall South Yarmouth, MA 02664 Dear Bruce : The Water-Quality Advisory Committee has reviewed the report by IEP, Inc. , "Water Quality Evaluation of the Proposed Camp Street Condominiums, West Yarmouth, Massachusetts", dated December 17, 1984. We would like to offer the following observations on this report: p. 4. "An occupancy rate of two(2) persons per condominium unit ,(instead of three(3) persons per single .family home) was utilized. . ." Title V bases sewage flow rates upon the number of bedrooms with the assumption that two persons will occupy each bedroom. In addition, IEP's calculations do not take into account the obvious increase in summer occupancy on Cape. Cod. Our original calculations were based upon Title V standards; the Cape Cod Planning and Economic Development Commission in their November 26 correspondence used a standard of 3 persons per unit. The CCPEDC calculations would appear to incorporate the most reasonable assumptions. p. 6. Summary of nitrogen loading estimates from the BWC zone of contribution. This table does not take into account nitrogen loadings from roadways- and other impervious surfaces. Studies by the Board of Health and Conservation Commission have shown that sources such as bird and dog feces, leaf litter, and putrefaction . of organic matter all contribute nutrient loadings to catch basins and runoff from paved surfaces. More importantly, IEP'§ calculations are based upon the zones of contribution defined by CCPEDC in 1982. The groundwater management study for the Town of Barnstable, now being finalized by SEA consultants, includes a redefinition of these zones based upon computer modeling. Therefore,. the calculations. contained in the report are based upon outdated information. Moreover, they do not take into consideration a major source of nitrogen loading within this particular zone of contribution, the Hyannis Water Pollution Control Facility. According to SEA's calculations, the nitrogen loading within this zone at saturation development, and with the sewage treatment plant operating at full capacity, will be 7.1 parts per million, in excess of the 5 ppm recommended by CCPEDC to ensure compliance with the Safe Drinking Water 'Act. Therefore, any additional major •nitrogen loading from a source such as the proposed Camp Street condominiums will have a potentially adverse impact upon groundwater supply. Based upon these considerations, the Water Quality Advisory Committee recommends that the number of units within the project be reduced, as per our correspondence of October 25, 1984. TOWN OF BARNSTABLE WATER QUALITY ADVISORY COMMITTEE - p. 2 Thank you for you consideration. We are extremely happy with your cooperation and concern for the Town of Barnstable, and hope That we can continue to cooperate in the future to protect our common drinking water supply. Sincerely yours, hn Kelly 4�� Chairman JK/dr 7 TOWN OF BARNSTABLE T WATER QUALITY ADVISORY COA'iMITTEE 367 Main Street Hyannis, Mass. 02601 December 27, 1984 R Mr. Bruce Murphy Town of Yarmouth Health Agent Town Hall South Yarmouth, MA 02664 Dear Bruce : The Water-Quality Advisory Committee has reviewed the report by IEP, Inc. , "Water Quality Evaluation of the Proposed Camp Street Condominiums, West Yarmouth, Massachusetts", dated December 17, 1984. We would like to offer the following observations on this report: p. 4. "An occupancy rate of two(2) persons per condominium unit .(instead of three(3) persons per single family home) was utilized. . ." Title V bases sewage flow rates upon the number .of bedrooms with the assumption that two persons will occupy each bedroom. In addition, IEP's calculations do not 'take into account the obvious increase in summer occupancy on Cape Cod. Our original calculations were based upon Title V standards; the Cape Cod Planning and Economic Development Commission in their November 26 correspondence used a standard of 3 persons per unit. The CCPEDC calculations would appear to incorporate the most ' reasonable assumptions. p, 6. Summary of nitrogen loading estimates from the BWC zone of contribution. This table does not take into account nitrogen loadings from roadways and other impervious surfaces. Studies by the. Board of Health and Conservation Commission have shown that sources such as bird and dog feces, leaf litter, and' putrefaction of organic matter all contribute nutrient loadings to catch basins and runoff from j paved surfaces. More importantly, IEP'§ calculations are based upon the zones of contribution defined by CCPEDC in 1982. The groundwater management. study for the Town of Barnstable., now being finalized by SEA consultants, includes a redefinition of these zones based upon computer modeling. Therefore, the calculations contained in the report are based upon outdated information. Moreover, they do not take into consideration a major source of nitrogen loading within this particular zone of contribution, the Hyannis Water Pollution Control Facility. According to SEA's calculations, the nitrogen loading within this zone at saturation development, and with the sewage treatment plant operating at full capacity, will be 7.1 parts per million, in excess of the 5 ppm recommended by CCPEDC to ensure compliance with the Safe Drinking Water Act. Therefore, any additional major 'nitrogen loading from a source such as the proposed Camp Street condominiums will have a potentially adverse impact upon groundwater supply. Based .upon these considerations, the Water Quality Advisory Committee recommends that the number of units within the project be reduced, as per our correspondence of October 25, 1984. TOWN OF BARNSTABLE WATER QUALITY ADVISORY COMMITTEE - p. 2 Thank you for you consideration. We are extremely happy with your cooperation and concern for the Town of Barnstable, and hope that we can continue to cooperate in the future to protect our common drinking water supply. Sincerely yours, jhn Kellyirman JK/dr CAPE COD PLANNING AND ECONOMIC DEVELOPMENT COMMISSION 7Sr DISTRICT COURT HOUSE, BARNSTABLE, MASSACHUSETTS 02630 TELEPHONE: 617-362-251 1 November 26, 1984 Mr. Bruce Murphy Health Agent Town Hall S. Yarmouth, MA Dear Bruce: I have reviewed the nitrogen loading figures for the Camp Street Condominiums presented to you by the Barnstable Water Quality Advisory Committee. While I agree that nitrogen loading greatly exceeds CCPEDC recommended limits, my figures differ from those arrived at by Barnstable. Compared to a loading of 97 lbs/40,000 SF, I have calculated a loading of 47.6 lbs/40,000 SF. Below are the details of the calculations: 76 units x 3 people/unit x 5 lbs N/person = 1140 lbs N/yr 1140 lbs N/yr/22 acres = 51.82 lbs/acre = 47.58 lbs/40,000 SF/yr 1140 lbs N/Year �c 4a4;000 'mg/lb = 15.5 ppm (1092 gal/day/acre) (22 acres) (.365 days) (3.8 liters/gal) final concentration Attached is the worksheet for the Nitrogen Loading Formula which provides more detail on the formula's assumptions. Please note that the Camp Street figures may be even greater as lawn fertilizer has not been accounted for. ' CCPEDC recommends that nitrogen loading should not exceed 16 lbs/40,000 SF in zones of contribution to public supply wells. If I can provide you with further information, please give me a call , Yours, Gabrielle C. Belfit Hydorlogist GBC:bg Enc. cc: Yarmouth Water Quality Advisory Committee Yarmouth Water Department Barnstable Board of Health Barnstable County Health Dept. e NITROGEN LOADING FORMULA I. Assumptions Nitrogen loading sewage . . . . . . . 5 lb/person/ ear lawn fertilizer 9 lb/5000 ft lawn/year Recharge dilution 40,000 ft2 lot @ 16"/year = 398,580 gal/year Occupancy 3 persons/unit Lawn area 5000 ft2 lawn/lot II. Formula Nitrogen load (lb x 454,000 mg/lb = NO3 concentration in ppm 1,092 gal/day/ 0,000 fty x 36S days x 3.8 liters/gal - III. Example Proposed development of 50 units on 25 acres of land including 2 acres of lawn area. Nitrogen load sewage: SO units x 3 persons/unit x 5 lb/person/year = 750 lb/year lawn area: 80,000 ft2 x 9lb/5000 ft2 = 144 Total N load: 894 lb/year 11 ppm final nitrate 894 lb N/year x 454,000 mg/lb = concentration in (1092 gal/day/acre) (25 acres) (36S days) (3.8 liters/gal) groundwater TOWN,OF BARNSTABLE WATER QUALITY ADVISORY COMMITTEE 367 Main Street Hyannis, Mass. 02601 October 25, 1984 Mr. Bruce Murphy, Health Agent Town of Yarmouth Board of Health 1146 Route 28 South Yarmouth, MA 02664 Dear Mr. Murphy: ~ The Town of Barnstable Water Quality Advisory Committee feels that the proposed plan for the Camp Street Condominiums presents a potential health threat to the residents of the Town of Barnstable. This development is located within the zones of contribution of eight public supply wells in the Town of Barnstable. The proposed 76 units totalling 1.36 bedrooms would produce approximately 97 lbs. N/40,000 sq. ft. This is six times greater than the 16 lbs. N/40,000 sq. ft. recommended as -a standard by the final Water. Quality Management Plan/EIS for Cape Cod. It is our strong recommendation that the number of units be reduced to contain an overall total of no more than 36 bedrooms. This reduction in units would produce a nitrogen loading of 25. 7 pounds N/40,000 square feet utilizing the formula devised by the Cape Cod Planning and Economic Development Commission, which still exceeds the recommendations of their Water Resource Planners, relating to population density and nitrate loading, but would appear to be a reasonable compromise. The daily sewage flow from this project would be 15,320 gallons based on criteria established by Title 5 of the State Environmental Code. A package treatment plant capable of tertiary treatment with complete nitrate removal could be a viable alternative to on-site septic systems if approved by D.E.Q.E. The Town of Barnstable at its November 1983 Town Meeting unanimously passed an article for a moratorium on all new subdivisions until January, 1985, primarily because of the concern of nitrate contamination of public wells. The serious health problems associated with excessive nitrates in drinking water are well documented. S.E.A. consultants are in the process of completing a comprehensive study of the groundwater in the Town of Barnstable. This study will be completed prior to the expiration of the moratorium, which-may be extended until March 1, 1985. Subdivision and condominium density as it relates to nitrates and other pollutants from on-site sewage disposal systems will be fully evaluated and recommendations controlling density will be made. We would appreciate your consideration in this matter, so vital to the health and well-being of the citizens of Barnstable. Sincerely, Jqn�Mly,Kel Chairma' V, ter Quality Advisory�-Committee 10/15/84 - Copies to P.Ryner, D.Rouse, G.Wadsworth c °� M T H ,. o TOWN OF YAR OU SOUTH YAR-NIOUTH MASSACHUSI TTS 02664 MATTA M ESE, ' �PoRRl C��6�9 BOARD OF HEALTH October 12, 1984 Memo To: Forrest White, Building Inspector From: Bruce Murphy, Health Agent Re: Camp Street, West Yarmouth Condominiums This memo is in regard to the above subject matter. Due to the fact that a portion of the proposed subsurface sewage disposal system will be located within Barnstable, a plan was forwarded to Barnstable Health Agent, John Kelly, for his review and approval. On October 12, 1984, this department received a letter from Mr. Kelly, dated Octo- ber 11, 1984 (See copy enclosed), in which he requested that the Building Permit, for this project, be withheld until the Barnstable Water Quality Advisory Committee, and their Consulting Firm, can evaluate the projects potential effects, if any, to Barnstable groundwater. They hope to have an answer returned to us within two weeks. Therefore, I would like to request that the Building Permit be withheld until such time as we receive their comments, etc. If you have any questions, please do not hesitate to contact me, and thank you for your attention and cooperation in this matter. BM/av cc: Board of Health Ralph Cipolla, Jr., Chairman, WQAC Robert C. Lawton, Jr., Executive Secretary David Oman, Developer John Kelly, Barnstable Health Agent f ile TOWN OF BARNSTABLE WATER QUALITY ADVISORY COMMITTEE 367 Main Street Hyannis, Mass. 02601 WATER QUALITY ADVISORY COMMITTEE MEETING SELECTMEN'S CONFERENCE ROOM 7 P.M. - OCTOBER 24, 1984 AGENDA Camp Street - Proposed Condominiums - Yarmouth Water Quality Study - Progress Report S E A CONSULTANTS October,ll, 1984. Mr. Bruce Murphy -. wealth.Agent Board of Health Town of 'Yarmouth 1146 Routs 28 South Yarmouth,'Ma. ,02664 Dear .Bruce i " Thank you for sending us,a copy of the plah,for the propoeed, condomigtum,. domplex. On�aite, oevage disposal system located,of U Cam p`„St reet.;in Yarmouth. This proposed `compl®x is, in close proximity to public'wella servicing the ,Syaninis, area. . ' It would -appear that. the' density`and high gallonage•of human" waste would far exceed the.' recommendation of, the• Cape' Cod 'Planning, Commission'e. nitrate loading. Ye- would greatly appreciate your olding'up this project until. the: Board of health, Wit.er .Qua tity'AdVisory:•Commic toe; the-Barns tab le-'Water' Company and our-own consulting.firm currently studying `,town. ground water--quality can ovaluato;the project and--forward recommendation" -Very truly yourer Join M. Kelly Director of Public ,Health JMK/mm cc.# -Mr. Peter xyner ; Barnstable Water Company S-.E.A. Coniultante. BOARD:OF HEALTH DATE 5, 111.19.18'.4................ oURGENT .......... Townpf Yarmouth El SOON AS POSSIBLE 1146 Route 28 FILE NO. .......................................................................................................................... ❑ NO REPLY NEEDED SOUTH YARMOUTH, MASSACHUSETTS 02664 A T TEN TION ............jo, hn Kellv ....................................... Phone 398-2231 Ext. 24 SUBJECT Camp.St. �Qondominium Plans TO ..................................................:...................................................................................... ...........jQbu KcIly.11calth Agent ................. ................ ...................... ............................. .................... .................. ............................... ................................................................................................ Townof.,.Hyannis......MA...................... ................................................................. ....................................... ............................. ............. ............... ............ ............................................. ........................... .............................. .............................. .................. ............... .................................................. .......... ............................................................. ................................................................................... ............ ................................. MESSAGE bear-John: ......................................................................................................................... .................................................................................................................................................................................................................................................................................................................................................................................................................. Please find enclosed for the subsurface sewa disposal plans.f.o..r the condominium..................................... ............ ............. .................................. .....................I................. your review............................................................................................. 9 .;�pm6nt pTqjp� for the Ca .................................. .............. ................ ................mp Stpej West YA-m-p4th apm. , with a portion of the gep Ic........................................ Ayg"M_being in Hyannis. Please review and return vour comments to me, ................................. ....... ......................................I'll...................................................................................................................................................................................................... ......11.1.1111,by ................. ....................................................... Thank WW ... ..............' I............... ..................... ................................................................................................................................................................................................................................................................................ .... . ............................................... ...................................................................................................... .................................. ................................................................................................................ sIGNED.......B.T.u.pe M.,u..r.t)..hl.v..91,.-H..e.a.l.t..h Agent REPLYL ................................................................ ............................ .......................................... ................. DA TE OF REPL Y.......................................................................................................................................................................................... ................ .......... ........................ ....................... ............. ........... ............................................................. ............ .................................... ............................................. .......... ........... ............................ ................ ......................................... ............... ................................................... ............................................................................................................................................................................................................................................................................... ............................................ .................... .....................7.1.1 ............... ............... .......... .......... ........................ ................................ ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. ..................... ....................11.1................... ................ ............................................................................................... SIGNED ....................................-........................................................................................................................I........................ ............................ E x BOARD OF HEALTH DATE October 5, 1984 ❑ URGENT Town of Yarmouth ❑ SOON AS POSSIBLE 1146 Route 28 FILE NO. ❑ NO REPLY NEEDED SOUTH YARMOUTH, MASSACHUSETTS 02664 ATTENTION Joann Kelly Phone 3W2nl ExL 24 �. To SUBJECT Camp St. Condominium Plans {. John Kelly, Health Agent + { Town of Hyannis, KA F MESSAGE Dear John: + > Please find enclosed,for your review, the subsurface sewage disposal plans for the condominium development proposed for the Camp Street, West mouth araa, with a portion of the septic �r system being,in Hyannis. Please review and return your comments to me by 1aj12/i Thant you. = SIGNED Bruce Murphy, Health Agent REPLY DATE OF REPLY F 7 j SIGNED RECIPIENT. WRITE REPLY, RETURN WHITE TO SENDER. KEEP THIS PINK COPY i1'ATEk JAL1T) AD'.'1sC, C^_::I:1TTEE. 367 14ain Street Hyannis, Kass. 02601 January 25, 1984 Mr. Earl Marsters, Chairman 1,7ashpee Planning Board A;ashpee, Ma. 02649 Dear Mr. Marsters; The Water Quality Advisory Committee and the Board of- Bealth, of the Town of Barnstable, strongly feel that the propcsed plan for:the Watersedge Condo- miniums presents a potentially serious health threat to the residents of the Town of Barnstable. This development is located within a zone of contribution to public supply wells in the village of Cotuit. Ground water flow charts indicate t'r,at the sewage effluent from the proposed condominiums' on-site sewage disposal systems will travel towards our public supply wells. The proposed 147 two bedroom units-would produce 51_-5-7 lbs. N/40,000 sq. ft. This is three times greater than the 16 lbs. N/40,000 sq. ft. recommended as a standard by the final Water Quality Management Plan/EIS for Cape Cod. It is our strong recommendation that the number of units be reduced on this parcel of 49.66 acres to 49 units not—exceeding two bedrooms per unit. This reduction in units would produce a nitrogen loading-:of- 17. 19 pounds N/40,000 square feet utilizing the formula-^dev3--sed by ,the CapeCod Planning and Econo- mic Development Commission, substantally. complying^with- the recommendations of their Water Resource Planners re--l--ating to populition density and nitrate loading. The daily sewage flow from this proje_qt would be 32�--50 gallons based-on criteria established by Title 5 of-t-he`State Environmental Code. A package treatment plant capable of tertiary treatment with complete nitrate removal could be a viable alternative to on-si-te septic systems if approved by D.E.O.E. The Town of Barnstable at its November Town Meeting-unanimously passed an article for a moratorium on all new_-subdivisions :until•,7anuaiy, 1985, , prim- arily because of the concern of -ni-fr�e contaminatio� public wells. The serious health problems associated with excessive nitrates in drinking water are well documented. We are in the_'process of hiring a hydrogeological firm to do a complete study of the groundwater in the Town-of Barnstable. This study will be completed prior to -the-expiration of the moratorium. Subdivision and condominium density as it relates to nitrates and other pol- lutants from on-site sewage disposal systems will be fully evaluated and recommendations controlling density will be made. We would appreciate your consideration--in this matter -so vital to the health and well-being of the citizens of Barnstable. --- Sincerely, ;hn M. �:elly, irman cc: "ashoee Board of Health v+ater Quality Acvisory Committee C.C.P.E.D.C. t� i AO .67 he .45 At T4 �„ 1J c� Ass . 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