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Town Center L1B2-CS000110~FROM : TRUU.~EEN LelNDCRRE Gi::IRI_RND FRX NO. TRUGREEN LandCare : 9728408287 Jan. 11 2BBB 22:.13PM P2 'rruGreen LandCare 3901 Leou Road Oarlat~d, TX 7504 t Tel: fl~2.~0-8~l January 10, 2000 Mr. Hank Quigg The Richmond Group 12200 Stemmons Freeway Suite 317 Dallas, TX 75234 RE: Starbucks Coffee / Deck Construction coppell, TX Dear Mr. Quigg: ! have reviewed the drawings for the t:rolx~sed deck and have inspected the Post Oak (Quercus Phellos) in question at the property referenced above. It is my opinion that the construction of the deck will not negatively impact the health of the t;'ee. The construction techniques that are raost injurious to existing trees ,are grading (cutting and filling), water table fluctuations and removal of the critical root zone mass (CRZ). The deck drawings indicated the structural members are to be attached to the existing concrete foundation via a ledger and then attached to five foo6ng posts in the CRZ. Each footing will displace one (1) square foot of CRZ for a total of five (5) square feet. There is approximately 1,720 square feet'of CRZ and the displacement represents less than .3% of the CR~ The tom! deck coverage is approximately 464 square fe~t or approximately 26.9% of the CRZ. The deck coverage will not impact the CRZ, ,as it will allow for an adequate exchange of water, nulrients and oxygen with the feeder roots. There has been extensive arbodcultural work on the tree and the irrigation system has been hand trenched around the pe~neter of the CRZ where disruption of the root zone occurred during the installation of the road and building pad. Sprinkler heads within the CRZ also appear to have been placed by the accepted radial raethod of hand trenching wherein a minimum number of roots are severed. The CRZ will be covered with a 2"-Y' layer of shredded hardwood mulch to minimize soil deposition and erosion and mitigate swings in soil temperature regimes. It is also my understanding that the propeety owner will employ d~e services of arc. putable arboricultura] firm to mnnitor and maintain this tree as well as the other un site trees upon completion of the project ~d for a period of two years after final acceptance. ~FROM TR~_IGREEN LRNDCRRE GI:~RL~ FRX NO. : 97L:~4B8287 12: 14PM P3 Please feel free to call me if you have any questions.' Sincerely, TruGreen-LandCare Kurt Holcornb Certifi~xl Arborist TX 1019 I<HPas CC: Mare Funderburk, ASLA File