Hi Clay, Thanks for the comments. I’m not sure we really understand your sources or reasoning. We’ve always found that “native” is a problematic term and different sources disagree significantly about the definition. For example, crape myrtles aren’t really native to this part of Texas. Neither are the live oaks we preserved from the apartment complex; one is native to the deep South and the other is a coastal tree. This particular willow tree species is nothing more than a hybrid of what is growing in low lying areas along LBJ Freeway and is commonly seen growing in draws and ravines of the Blackland Prairie. The creeks of our 1000-acre Big Sky Texas project in north Tarrant County were thick with willows. Moreover, as Robyn and I were thinking through the problem, we imagine Addison may have trouble keeping willows from springing up along the creek bank, since the seeds may flow in from upstream. Since these trees are grouped around the creek area with water seeking species preserved along the creek, we think willows are a good fit and recommendation, if they are watered and cared for properly by Addison. Kevin Sloan, ASLA 2400 Empire Central, Suite F ? Dallas, Texas 75235 T. 214-459-1784 ? F. 214-350-5849 On 8/16/11 9:24 AM, "Clay Barnett" wrote: Robyn, Two comments: 1. This tree is accustom to acidic soils and the soils we have in North Texas are very alkaline. 2. This tree is native to China. I would prefer a tree that is native to Texas. Here is a website from my good friends at TAMU that lists trees native to Texas: http://aggie-horticulture.tamu.edu/ornamentals/natives/indexcommon.htm#W If you have any questions, please let me know. Thanks, Clay Barnett, P.E. Town Engineer Town of Addison 16801 Westgrove Drive Addison, TX 75001-2818 Office: (972) 450-2857 From: Robyn Jacobson [mailto:rdj@kevinsloanstudio.com] Sent: Tuesday, August 16, 2011 9:01 AM To: Nick Jacob Cc: Clay Barnett; Tom Lamberth; Kevin Sloan Subject: RE: Mitigation Area - Reach 1 In response to the question of a replacement tree species to the redbuds we recommend: Babylon Weeping Willow Latin: Salix Babylonica Attributes - Salix babylonica Plant Type: Tree Bloom Season: Mid Spring Flower Color: Yellow Foliage: Evergreen Height: 30 ft. Sunlight: Full Sun This species will reinforce the watery environment of the creek and large existing trees. The community might name this area of the park, “The Willow Walk.” Let us know your thoughts – Robyn Dunn Jacobson, AIA ? Managing Director2400 Empire Central, Suite F ? Dallas, Texas 75235 T. 214-459-1784 ? F. 214-350-5849 From: Eric T. Little [mailto:ELittle@udr.com] Sent: Monday, August 08, 2011 2:42 PM To: Kevin Sloan; Robyn Jacobson Cc: Clay Barnett; Tom Lamberth; Nick Jacob Subject: RE: Mitigation Area - Reach 1 Kevin, Per Tom Lamberth, we want to maximize the sod area as much as possible which means we just need to pull 30’ off the edge of the creek and follow the creek line instead of the sidewalk. Also, per our meeting last week, we would like to explore replacing the Redbuds in Reach 1 with another species – they’ve pretty much all died and from what I’m told they are fairly hard to replace. Can you make a suggestion as to what we should replace them with? Thanks, Eric From: Eric T. Little Sent: Wednesday, August 03, 2011 12:08 PM To: 'Kevin Sloan'; 'Robyn Jacobson' Cc: Clay Barnett; Tom Lamberth; Nick Jacob Subject: RE: Mitigation Area - Reach 1 Kevin, The product sounds great. The sod has to be a minimum of 30’ from the creek bank. When you do your drawing make sure you maintain that on both sides of the creek. Thanks, Eric From: Kevin Sloan [mailto:ks@kevinsloanstudio.com] Sent: Wednesday, August 03, 2011 11:44 AM To: Eric T. Little; 'Robyn Jacobson' Cc: Clay Barnett; Tom Lamberth; Nick Jacob Subject: Re: Mitigation Area - Reach 1 Eric, Robyn and I have reviewed the issue. An edging material is in order. Although wood seems sympathetic to mitigation, we foresee problems curving and installing wood at the kind of thickness – 2 x 6 for example – that would last. The gauge of so called, “Ryerson” metal landscape edging is too light and becomes easily damaged by mowing and then it works itself out of the ground quickly becoming an eyesore. Our best recommendation is to make an edging out of a heavier gauge metal in black carbon steel. This is a typical detail in our office and we refrain from installing it any thinner than 3/16.” What little of it you see, will look like the pedestrian bridge. An edge is also going to make a pronounced visual impact. To prevent the edging from becoming an intrusion, we recommend that it is consistently offset from the inside edge of the two pedestrian paths – approximately 8’ - 0” (...we will do a drawing...) — so that it mirrors the curvature of the paths. Having the edging look like it “traces” the curve of the path, makes it go away. What we want to avoid is introducing an unrelated, “wiggly thing” that will call attention to itself and distract from the natural setting. Sod on both sides of the path is also a buffer to any pedestrians that may need to step off the path( or ride off to avoid a hazard ) momentarily. Mowed lawn gives them the opportunity to do so without damaging the native area. Best regards, Kevin Sloan, ASLA 2400 Empire Central, Suite ? Dallas, Texas 75235 T. 214-459-1784 ? F. 214-350-5849 On 8/2/11 2:20 PM, "Eric T. Little" wrote: Kevin, Please see the attached. We have gotten permission from the COE to change the portion of Reach 1 outside of the mitigation area from the natural seed to sod. A question has come up on how we delineate the mow (sod) area from the non-mow (seed) area. I would like something that is cost effective, that disturbs the soil the least, but doesn’t look cheap. Any ideas? From: Eric T. Little Sent: Monday, August 01, 2011 2:54 PM To: cbarnett@addisontx.gov Cc: 'Slade Strickland'; Tom Lamberth; Nick Jacob; 'Jennifer Haynes(jennifer@ntexcon.com)' Subject: FW: Mitigation Area - Reach 1 Clay, We met with Rudi a few minutes ago and he agrees, the area outside of the blue band on the attachment is not part of the mitigation area. We can change this from the seed/weed to sod. Here is how much that change would cost: Contract Add Reach 1 203 MIDIRON BERMUDA SOD 181816 SF $ 0.20 $36,363.20 46700 SF $ 0.20 $ 9,340.00 I want to make sure everyone is ok with this before we give the go ahead. We would also need to designate the mitigation area with signage like “Mitigation Area – No Mowing Allowed” or something to that effect. Thanks, Eric From: Bruce Dunne [mailto:bdunne@icon-engineers.com] Sent: Monday, August 01, 2011 1:47 PM To: Eric T. Little; Joel Massey; Tom Lamberth Subject: RE: Mitigation Area - Reach 1 Our commitment for mitigation is 30 feet (plus or minus – it gets a little less where the walking trail cuts into this area near the bridge) from the bank edge. The area outside the mitigation area that could be landscaped is approximately 1.07 acres (see attached exhibit). From: Eric T. Little [mailto:ELittle@udr.com] Sent: Monday, August 01, 2011 12:05 PM To: Bruce Dunne; Joel Massey; Tom Lamberth Subject: Mitigation Area - Reach 1 Bruce, We are meeting today with Rudi to talk about changing the areas in Reach 1 outside of the mitigation from the natural seed mix (ie weeds) to turf. The attachment is pretty much the only drawing I have that indicates where the mitigation area actually is. We need a drawing with dimensions so we can price this. It would also be helpful to get it staked so our operations folks can see what we are talking about. Thanks, Eric ************************************************************ This e-mail and any files or attachments transmitted with it contain Information that is confidential and privileged. This document may contain Protected Health Information (PHI) or other information that is intended only for the use of the individual(s) and entity(ies) to whom it is addressed. If you are the intended recipient, further disclosures are prohibited without proper authorization. If you are not the intended recipient, any disclosure, copying, printing, or use of this information is strictly prohibited and possibly a violation of federal or state law and regulations. 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