HomeMy WebLinkAboutSR_ERC_Memo_Reconsideration_Request_181015.pdfDEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
ERC Memorandum
M E M O R A N D U M
DATE: October 15, 2018
TO: Environmental Review Committee
FROM: Matt Herrera, Senior Planner
SUBJECT: Forest Terrace Subdivision Request for Reconsideration of DNS-M
LUA18-000124
On October 4, 2018, the Forest Terrace Subdivision applicant filed a Request for Reconsideration (Exhibit
22) of the Environmental Review Committee DNS-M issued on September 21, 2018. Specifically the
applicant requested a reconsideration of Mitigation Measure #6 which states “The applicant shall restore
the Union Ave NE roadbed (curb to curb) along the subject property’s frontage to current City standards
prior to final plat recording.” Staff recommended the mitigation measure (Exhibit 1) due to the Advisory
Notes to Applicant (Exhibit 21) that would require the applicant to extend the sewer main to the center
of the intersection of Union Ave NE and NE 27th Pl and then extend northward along the east side of Union
Ave NE to the existing lift station. This would result in the applicant trenching for utilities on both sides
Union Ave NE causing center sections of the roadbed to be substandard with regard to gravel sub base
and paving depth. These gaps within the roadbed would then be susceptible to failure due to the high
volume of dump truck trips to accommodate the large amounts of imported fill needed for this plat’s
construction.
The applicant has indicated in the ERC reconsideration request that an alternative to extending the sewer
along the east side of Union Ave NE is possible and is currently being designed . Following consultation
with the department’s Development Engineering team, staff recommends the committee amend DNS-M
Mitigation Measure #6 to only require full roadbed restoration if the applicant constructs utilities on the
east side of Union Ave NE. The amended mitigation measure would read:
6. If any utilities are constructed east and parallel of the centerline within Union Ave
NE along the subject property’s frontage, Tthe applicant shall restore the Union Ave
NE roadbed (curb to curb) along the subject property’s frontage to current City
Standards prior to final plat recording.
While the applicant may be able to keep utility installation along the west side of Union Ave NE, there
remains concern that two (2) parallel trenches for new stormwater lines along the west side of Union Ave
NE coupled with the existing sewer main located west of the street’s centerline (Figure 1) will result in
gaps of substandard gravel sub base and paving depth sections that would be susceptible to failure due
to the above referenced volume of dump truck trips.
ERC Memo on Reconsideration
Page 2 of 2
October 15, 2018
ERC Memorandum
Figure 1 Utilities west of Union Ave NE centerline
Therefore staff recommends as a new mitigation measure to the amended DNS-M that would require the
applicant to restore any gaps of substandard paving depth west of the Union Ave NE centerline along the
subject property’s frontage. The new mitigation measure #7 would read:
7. If utilities are only constructed west and parallel of the centerline within Union Ave
NE along the subject property’s frontage, the applicant shall restore the ga ps, if found
to not meet City standards, between the trench restorations west and parallel of the
centerline to current City standards prior to final plat recording.