Rainwater Recovery receives Go Green award

Posted on May 12th, 2009 by Water Nymph in Rainwater Recovery News

balletocbcIt is so nice to get noticed. Especially when so much of what we do is invisible. Not just that it’s underground, but, if we’re doing our job right, no one should know it’s there.

And especially nice for this project which was with such good people, doing good things, like the Old Cambridge Baptist Church. That photo is of our work in progress, with ballet dancers. Oh, you didn’t know? We always finish with a pas de deux.

Here are the particulars:

Category:  Stormwater – Innovative Use of Stormwater On Site / Stormwater Harvest and Reuse

ACCOMPLISHMENTS

  • Motivated by the need to mitigate roof and site water infiltration into the Church’s basement office areas, the OCBC implemented a site drainage system that solved the water infiltration problem and mitigated offsite stormwater flows to the City’s combined sewer system, and provided a water conservation benefit to the Church. The system, using Best Management Practices (BMP) design principles, is an integrated stormwater detention and harvesting system which exceeds the 25-year storm flow detention requirements while realizing water conservation benefits in the re-use of harvested stormwater for site irrigation;
  • Designed and built by Rainwater Recovery Inc. of Waltham, MA, the site drainage system currently stores 10,000 gallons of roof water for reuse and detains 20,000 gallons of site stormater flows prior to discharge into the city stormdrains at the prescribed 2-year storm event flow rate;
  • The Church has undertaken investigation of the second phase of the project in which the harvested water will be used for meeting large volume toilet flushing water demands in addition to the current irrigation use, and conversion of the 20,000 gallon detention volume into a fully integrated harvesting and detention configuration using advanced controls equipment to more aggressively conserve water at the facility and make a substancially larger mitigative impact on stormwater discharges to the City’s drainage infrastructure. This in turn reduces stormwater flows to the City’s Combined Sewer system and associated periodic Combined Sewer Overflows into nearby fresh water bodies as well as flows of stormwater to the State’s sewage treatment facilities.  The latter manifests in energy savings as well, since reduction of stormwater flows to the State’s sewage treatment plant results in energy savings at the plant due to the very large quantities of energy used in treating flows to the sewage treatment plant.

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