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35_080E Burts Pit Rd- letterTransit -Mix Concrete 303 King St., Northampton '413) 584-1054 Bill Willard, Incorporated P.O. Box 60307, Florence, MA 01062-0307 Ph on e/ Fax: (413) 584-1802 Nlay '(0? i Northampton Conservation commission 210 Nfain St. .Northampton. N4A ()1(-)6k'-) Dear Commission Members; Washed Sand & Gravel 1010 Ryan Rd.. Florence (413) 584-1802 Per vour instructions in �� P�Fonts 9A - Enforcernent(A-der. Part C. I wish to request an extension of the date for installation of a cane stnicture. Two wildlife experts have submitted opinions on our situation su&;esting that we should attempt a differen�t method of leveling the pond (see enclosed pages), as our current method is apparently unworkable. Thi� new method will require installation on property we do not own- We have not cleaned the debris since the order was issued, and will leave it untouched as long as the water level does not C7 substantially increase. until �he issue can be resolved. Thank- you. Sincerely. Bill Willard, Incorporated Beth A. Willard BAkVibw Eric. F-- - . T h' AY 6 2002 Integrated Wildlife Control P.O. Box 60169 Florence, MA 01062-0169 Phone 413-586-0890 Fax 413-584-3898 April 28, 2002 Beth Willard Bill Willard, Inc. 1010 Ryan Rd. Florence, MA 01062 Dear Beth Per your request, I have inspected the beaver dam and flow control pipe on your property. I did so on April 15, 2002. I find the pond -leveling pipe to be very inadequate due to its length and location in the dam. It is described as a "Clemson Pond Leveler" in the paper work you received from the Northampton Conservation Commission. ( See Clemson Diagram enclosed ) Due to the restrictions placed on the installation of this device it will not rk. This devices is little more then a standard culvert, with a small amount of protection to the opening. At best this will keep materials from being pushed inside by the beaver, but will require a large investment of time to keep free flowing What makes a pond -leveling device work, is the), need to be long and placed in the deepest part of the pond. The pipe in question is not a Clemson Leveler. _ I have asked another expert in pond -leveling devices to inspect you site as well. Ruth Callahan of the Beaver Solutions Company of Hadley and I inspected the site on Friday April 26, 2002. I have enclosed her report with this letter. My suggestion to resolve this situation is to install two (2) 12" cage an I pipe pond -leveling systems (see drawing enclosed) in the center part of the dam. (These devic s have been successful in resolving the beaver conflict on Ellington Road in Florence.) would also suggest the removal of the existing pipe and replace it with a pipe of the same size ut without holes in it. I would install a rectangle fence excluder in front if this so it could act as a over flow device. The fence would have to be 5' wide and 20' long to prevent the pipes dete tion. This device will only be used to help the pond return to its normal level after heavy rain or n off quicker. Without being able to do the work as described the only other option would be the complete removal of any and all beavers from the site on an annual bases. This optio i would leave the dam to deteriorate naturally due to lack of maintenance. This would also r sult in the loss of the wetland. Per your request my company will offer a maintenance contract and will assume the responsibility of keeping the devices open and free of debris. I will require permission to access the properties and devices as needed without notice. Sincerely Don LaFountain Long Term Humane Solutions to Human Wildlife APR-30-2002 08:53 FM CALLAHAN 413 587I9788 P_01 Beaver Solutions RAM A04 Mft Caliehen ae HOft%Aaad ��� sego ono 1 sd 1hx:14is) OV-97W EIMMA l% lnraalJlfrr OM April: 29, 2002 0 Ml ein Streetnaervation Commission Northampton, MA 010f90 Dear Commission Members, i have been srked by Don LaFounbun of lnlcgrnW W kWO Control to comment about the location of a 9 �h the beam dam near the Willard property in the Florence section of ampb�n. I vied the with Mr. L.aFot, ain eady last week, l am the owner -operator of Beaver Solutions and have been woridng full-time ping landowners resolve beaver oorftm since 1998. t have installed pipes at more than 160 81196 throughcwt New England. The plasoement of the cage which protects the Inlet of the pipe is very imporlant in order th guarantee long-term success of the system The cape roads th be bcabed to a deep in the beaver pond fly Of ll 30 feet upstream of the darn. The tit location is found by rived" ig to the pond and using a pole or mike to find an area that is deep and tfaat, L=1ft cape in a deep tt t away from w dam alimtnates the chance that the resident beavers wwith the pipe syste vi and minimizes the buildup of sitt tk)n near ttre pipe's Inlet. Pipe cages located too cim to the darn run the risk of toeing dammed around or sifted in as the dam ages and widens. The mast i decision that can be made prior to the fon of a Over ll 9�oang system Is the theight of the pond. A sa ry level needs to be deter min This WM mhate properly damage and sa�sty the needs of atxttters whlie mat ' ' as much of the pond's valuable �m as possible. Today's pond leveling systems can readily adjusted after ftlailaation to ensure this predefermined goal is maintained. furlt��, �ftY to mview this safe. Please do not heslt8te to coo sinosrely, pe& cmz- Ruth CaU han me it ! can be of any Table 1. List of materials for the Clemson Beaver Pond Leveler. Quantity Item 1..................................10' section, 10" diameter PVC pipe (Schedule 40) 1.................................. PVC cap for 10" diameter PVC pipe (Schedule 40) 1..................................10" x 8" PVC pipe reducer coupling (Schedule 40) 4.................................. 86" sections, 3/4" diameter plastic roll pipe (water pipe), 160 4..................................3/4" metal couplings for roll pipe 16..................................1 /4" x 2" galvanized eyebolts 16..................................1/4" galvanized nuts 16..................................1/4" galvanized washers 16..................................16" sections, 8 gauge galvanized wire (medium hardness) 2..................................96" sections, 2" x 4" 1/2 gauge galvanized welded wire 2 lbs.................................. Crab trap clamps (fasteners) The above materials are required to assemble the intake device. The carrying pipe (flow 8-inch diameter PVC, Schedule 40 with coupling sleeves and elbows appropriate to the Elbow and stand pipe are optional. Needed only to manage water level if maintaining pond is an objective. Beaver dam T - joint tilted with a drain plug �. may replace elbow. Fig. 7. Clemson beaver pond leveler. state to state. Some types of traps and trapping methods, although effective and legal in some states, may be prohibited by law in other states. Individual state regulations must be reviewed annually before beginning a trapping program In some states where beavers have become serious economic pests, special regulations and exemptions have been passed to allow for increased control efforts. For example, some states allow trapping and snaring of beavers and other control measures throughout the B-6 8" diameter 40 PVC pipe year. Others, however, prohibit trap- ping except during established fur trapping seasons. Some states allow exemptions for removal of beavers only on lands owned or controlled by persons who are suffering losses. In some states a special permit is required from the state fish and wild- life agency. Of the variety of traps commonly allowed for use in beaver control, the Conibeat® type, No. 330, is one of the most effective (Fig. 8). Not all trappers will agree that this type of trap is the grade may consist of 20 to 40 feet of d configuration. 1" re -bar 6' long Intake \ device \} I Pond side most of ctive; however, it is the type most commonly used by professional trappers and others who are prind- pally trapping beavers. This trap kills beavers almost instantly. When prop- erly set, the trap also prevents any escape toy a beaver, regardless of its size. Designed primarily for water use, it is equally effective in deep and shal- low water. Only one trap per site is generall y necessary, thus reducing the need for extra traps. The trap exerts tremen ous pressure and impact when tr pped. Appropriate care must be exercised when setting and placing Tutegrated Beaver Damage Control ,RE MESH CULVERT PROTECT,—. Length Active site 14' long. Inactive site T long. Direction of flow Specifications Protector is made with 6" x 6" galvanized 9 Gauge woven wire wire Wire mesh is held together with galvanized hog rings. There is an end cap made of the same material and attached with the The protector is held in place with heavy fence or sign posts. These ground and the protector is held to them with galvanized 9 gauge wi. For an active site a 14' Protector is recommended. For a non -active site a 7' Protector is recommended. Maintenance Maintenance of the protector is cleaning floating debris away twice a, spring & once in the fall. If heavy rain run-off occurs the protector caa to allow floating debris to pass through. When the water level goes do can be replaced. INTEGRATED WILDLIFE CONTROL P.O. Box 60169 Florence, MA 01062-0169 Phone (413) 586-0890 Fax (413) 584-3898 Width Should be min. 1' larger then culvert 1 ne method. driven into the ear. Once in the be easily removed wn the protector For beaver dam flow control devices to work, they must be designed s that beaver cannot detect the flow of water into the pipe. The cage leveler works by surrounding the inflow area of the pipe with a large cage. This prevents the beavers from getting close enough to the intake to detect the water movement. As a result, the beavers do not attempt to clog the pipe. The Cage Leveler is a long-lasting, cost-effective system which will protect property while leaving resident beavers in place, as well as preserving valuable wetlands. It is designed to prevent detection by the beavers and to keep the normal water levels below the top of the dam. Beavers will raise their dams only when the water level rises above the dam. When the water level is below the top of the dam, beavers will not attempt to raise the height of the d but will maintain it. Rain will then be held back by the dam and slowly released. Some normal fluctuation of the water level during wet and dry spells should be expected, but the pond level will be controlled. The peak of the flexible pipe in the dam determines the pond level ( see diagram). Water will flow through the pipe until the pond level drops below the peak of the pit This design not only permits control or the water level, but it also allows for the entire pipe to hidden ( under water, and in the dam), preserving the aesthetic beauty of the wetland. Diagram -The Cage Leveler Note: Old Water Level Peak ofpipe at back of dam Comer eBlocks A , A �, tJ Beaver Dam In Take I The cage is made of 6" x 6" mesh fencing • The property owner needs to obtain permits from the state Division o�Fisheries & Wildlife or Dept. of Natural Resources, and the local Conservation Commission. • The dam is breached a small amount each day for several days to gently lower the water to the desired level. This minimizes the risk of downstream flooding and allows for quicker installation. Breach early in the day as the nocturnal beavers sleep for the longest drainage time. • The number of systems needed is determined by the stream flow. Usually 1 or 2 are sufficient. These devices can function for many years with minimal malntenance. • The pond level can be raised or lowered by adjusting the peak of the pipe. Sticks are used to hide the down stream end of the pipe. Integrated Wildlife Control Don LaFountain P.O. Bog 60169 Florence, MA. 01062-0169 Phone (413) 586-0890 Fax (413) 584-3898 E.31OG/-200:' 1=: 07 BILL WILLARD I IC PAGE k71 Bill Willard, Incorporated P_O_Box 60307 Florence, MA 01062-030, PhonelFax: (413) 584-1802 TO: Carolyn Minch Date: eompeny-- Northampton Pfenning✓eonserv. conrrrt_ Fax: s8� -/-a 6 y FROM: Beth W. RE: E Total Pages; 5 Per om- conversation yesterday, following "am 4 pictures s1lowing that th pipe was reinstalled. Because of the expcnse of filing a new ,notification and the problems with the adjonting property owner-, our company del', different pond leveler as discussed at die C'onscrvation Commission mee gettuig the information back to you srxrner - My ,,other has been hospir series of medical emergencies and I've taker, time off to be involved wid In briefly going curer my ,totes yesterday, I think restoring the cage and u cleaning it we,ti all the Conservation Commission required. If I atn rust: me know as soon as posst`ble� Thank you. � C Dam Pipe cage surrounding the the coA of the project, :d not to puisttc a ng. I apologize for not lizcd for 2 weeks with a care for both my parents. mg greater cacti in can, would you please let 98/06/2002 1-':07 4135841802 BILL WILLARD INC PAGE 022 p4� .M�. �i ,iVx ,�✓ 7 fir' :_ j J - 1 � f r s yt!r i_f, �