Supplementalreportwithaddons 2

January 6, 2020 DeFeo Associates 15 Washington Valley Road Warren, NJ 07059 VIA EMAIL (WDefeo@defeoassociates.com) Re: West Orange Housing Development/West Essex Highlands West Orange Township, Essex County, New Jersey ASGECI Project #4519 Dear Mr. DeFeo: AMY S. GREENE ENVIRONMENTAL CONSULTANTS, INC. (ASGECI) is pleased to provide this report of findings on the tree survey conducted on December 10, 2019 at the proposed West Orange Housing Development/West Essex Highlands Site (Site). Per the request of West Orange Township, a tree survey was conducted to determine the approximate density of trees within a ~25-acre area where a 496-unit housing development is proposed, in which a portion includes inclusionary housing pursuant to the Mount Laurel doctrine. Methodology The tree survey was conducted based on methodology described in Mueller-Dombois and Ellenberg (1974)1 which presents the following guidelines regarding vegetation sampling for forest tree studies: 1. Where the sampling emphasis is on obtaining an accurate estimate of the number of individuals per unit area within large communities vs. sampling for recurring plant assemblages, the sampling is spread over the area in question in the form of small quadrats vs. a single “minimal sampling area”; however, both methods can be combined and the number of small quadrats can be determined to include the “minimal sampling area” of the community (p. 47 and p. 70); 2. The “minimal sampling area” for temperate zone forests with respect to tree stratum should be between 200m2 to 500m2 (p. 48); 3. Individual quadrats for forest plots should cover a minimum of 10m x 10m (p.70); 4. For forest volume studies, a standard of five to ten percent sampling intensity is often appropriate (five to ten percent of an area in question is sampled and then extrapolated to the whole, p. 76); and 5. Appropriate sample size can be determined by calculating a “running mean” of the collected data where the average number of trees in all plots sampled (x/n) is plotted 1 Mueller-Dombois, D and H. Ellenberg. 1974. Aims and methods of vegetation ecology. New York: Ed. J. Wiley & Sons, 547pp. 4 Walter E. Foran Blvd. Suite 209■Flemington, NJ 08822■908.788.9676■fax 908.788.6788■mail@amygreene.com■www.amygreene.com Pennsylvania Office: P.O. Box 551, New Cumberland, PA 17070 ■ 717.525.8162