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G US Army Corps x,f Engineers Public Notice No. 9 0 0 0 0 5 7 Date:February 20, 1990 Sacramento District 650 Capitol Mail In Reply Refer to the above Comments Due by: March 20, 19jil-ft Sacramento, CA 95814-4794 Public Notice No. TO WHOM IT MAY CONCERN: F NTAL HEA I tv i ; "C2, �, 4 ivi SUBJECT: Application for a Department of the Army Permit under authority of Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act, to bury a 7211 sewer line under Walker Slough, as shown on the enclosed drawings. APPLICANT: City of Stockton, 425 North El Dorado Street, Stockton, California 95202. LOCATION: The site of the proposed work is about 50 feet downstream of the Manthey Road Bridge crossing in Section 11, Township 1 North, Range 6 East, City of Stockton, San Joaquin County, California. PURPOSE: The applicant states that in order to facilitate the growth of developable land, an adequate sanitary sewer line is necessary. PROJECT DESCRIPTION: The applicant proposes to bury a sanitary sewer line about 3 feet below the bottom of Walker Slough and cover it with a one foot thick concrete cap to protect both the sewer system and the stream bed from possible erosion. AREA DESCRIPTION: On the north bank of Walker Slough at the site there is very little vegetation. On the south bank the vegetation is sparse, with a few small trees and low growing riparian vegetation close to the waterline. Normal stream flow velocities in Walker Slough are low and the water is shallow at the proposed crossing site. ADDITIONAL INFORMATION: The applicant is applying to California Regional Water Quality Control Board for certification, or waiver of certification. For additional information, contact the agent, Tim Taylor of John Carollo Engineers, telephone (415) 932-1710, or Phyllis Petras of this office, telephone (916).551-2272. The latest published version of the National Register of Historic Places and its monthly supplements have been reviewed and there are no places either listed or recommended as eligible which would be affected by the proposed work. The work will not adversely affect any threatened or endangered species or their critical habitat. The District Engineer has made this determination based on information provided by the applicant and on the Corps' preliminary evaluation.