Walter T. Pereyra

148 E. Lake Sammamish Road SE

Sammamish, WA  98074

drfish148@aol.com

 

July 1, 2003

 

City of Sammamish

488 – 228th Avenue NE

Sammamish, WA  98074

 

RE:  Ebright Creek Park, Environmental Checklist

 

Dear City:

 

The following comments are provided in response to the Environmental Checklist prepared by the City for the proposed development of Ebright Creek Park dated 5/30/03.

 

From my review of this checklist and appropriate documents, and participation in a community meeting on the proposed park, I have concluded that the development of Ebright Park as proposed will adversely impact Ebright Creek and its fauna and environment as well as my property and in particular my home.  Developed ball fields are not suitable for this site and should be eliminated from the park design.

 

1. BACKGROUND

 

            I have lived on Ebright Creek for 30 years.  My property is bisected by Ebright Creek downstream from the proposed park site.  My home, which was built in 1936, is situated 20-feet from Ebright Creek.  I am intimately familiar with Ebright Creek and its environs.

 

          As has been pointed out in the checklist, Ebright Creek is a high quality, Class II salmonid stream supporting cutthroat trout and rainbow trout, and spawning populations of kokanee salmon, coho salmon and sockeye salmon. The kokanee salmon in Ebright Creek were recently determined to be part of the dwindling run of native kokanee from Lake Sammamish. Ebright Creek is one of the last refugia for this important genetic strain of kokanee and must receive special consideration and protection.

 

2. ENVIRONMENTAL IMPACTS

 

            The development of Ebright Creek as proposed will increase discharge into Ebright Creek and thus adversely impact the creek, its environment and its fish and fauna. 

 

            Runoff from the Ebright Creek Park site into Ebright Creek will  increase as a consequence of the proposed park development.  This impact will result from the proposed removal of 54 large trees from the site, the paved and unpaved parking lot, concrete foundations for buildings and bleachers, and the multi-use athletic field with its large impacted surface area. 

 

The increased runoff was verified by the city’s consulting engineer from Gray & Osborne present at the public hearing and is further detailed in the Stormwater TIR prepared by them for this development.  Although remedial measures are proposed to address the expected impacts from increased peak flows to Ebright Creek, the fact remains that the volumes of water passing into Ebright Creek will be increased.  These increased flows to Ebright Creek, primarily during the rainy winter season, will flow downstream through the known Ebright Ravine, a critical steep-sloped area subject to an SO-190 designation due to its potential erosion hazards.  Increased flows means increased erosion which equates to increased negative impacts to kokanee and salmon spawning in Ebright Creek and their subsequent production plus the trout populatins native to the creek.  

3. REDUCED AQUIFER RECHARGE

 

Increased runoff from the proposed site will reduce the important recharge of the aquifer supplying Ebright Creek during the critical summer period.

 

            The acceleration of water off the park site in the form of increased runoff can only reduce the amount of recharge of the important aquifer for Ebright Creek.  This is particularly important during the summer months when Ebright Creek becomes totally dependent upon subsurface flows from this aquifer for its maintenance.  With flows at my home averaging only 0.5 cfs, any reduction in summer flows is critical to the carrying capacity of the creek.

 

4. CHEMICAL POLLUTANTS

 

The use of fertilizers and other field maintenance products on the proposed ball fields will potentially add phosphorous and other pollutants to Ebright Creek and Lake Sammamish with deleterious impacts to the fish, fauna and environment of Ebright Creek.

 

            The maintenance of the ball fields will most likely require the application of fertilizers, herbicides and pesticides.  Even with the most judicious application, some of these chemicals will eventually end up into Ebright Creek due to runoff and flow patterns on the site, and the relatively close proximity of the ball fields to Ebright Creek and wetland areas.  There is no question that such chemical contamination will have a deleterious impact to the fish, fauna and environment of Ebright Creek and eventually Lake Sammamish - - - it just cannot be helpful.

 

5. FLOODING IMPACTS

 

Increased runoff from the park site can only add to the flooding impact to my home during periods of extended high flows in Ebright Creek

 

As pointed out above, my home is sited on Ebright Creek, just 20-feet from its southern bank.  In recent years I have noticed increased flows in Ebright Creek during the winter months. Ebright creek itself has flooded my house and property on three occasions. There are strong indications that increased development on the Plateau is responsible for these increased flows and their damaging effects.  The consulting engineers for the City have indicated that proposed development of the site with a multi-purpose ball field will increase the runoff from the park site.  Even though peak flows may be attenuated through proposed mitigation measures, the fact remains that the total volume of water flowing off the park site will increase.  These increased volumes of water can only add to the risk of flooding of my property and particularly my home. 

 

And what happens if the engineering solutions for handling the increased runoff fail to mitigate against increased peak flows?  Will the park be “undeveloped”?  NO.  Will the risk of flooding of my home increase?  YES.  This then becomes my problem and the costs of development have once more been externalized.  This risk and end solution is unacceptable.

 

The City certainly should not be contributing to this increasing cumulative impact to Ebright Creek and my property by further developing lands in the immediate watershed of Ebright Creek. To the contrary the City should be doing everything possible to mitigate the damage that has already been caused by the reduction of permeable land on the Plateau.  
              

In summary the City should make a determination of significance (DN) for the proposed park site.  I feel the environmental impacts from the proposed development of the Ebright Creek Park site are potentially significant, particularly the identified increased runoff expected, the presence of the sensitive Ebright Ravine downstream of the park site, and the importance of Ebright Creek as a refugia for a unique race of kokanee salmon. 

 

In my mind it is totally unconscionable for the City to propose developing the sensitive lands of the Ebright Creek Park site into a park that would appear to bring further damage to its namesake, Ebright Creek. The only responsible approach for the City to take is to create a passive nature park that provides enjoyment for the residents of our City and at the same time protects and enhances Ebright Creek.  A multi-purpose ball field does not belong in the restricted confines of Ebright Creek Park.  There are other more suitable locations from ball fields in the City of Sammamish that do not present the environmental impacts as does the proposed development for this site.
 
Thank you for allowing me to provide these comments in response to the Environmental Checklist.  I look forward to the evaluation by the City of these and other comments on this Checklist and the final determination of significance in response to these comments.


Sincerely,

 



Walter T. Pereyra, Ph.D.