PERMFILE127759 - Laserfiche WebLink

Home Browse Search

The secorci set of samples were collected on 8/1/91 during a representative • precipitation event which produced runoff for a period of at least 45 minutes. Review of the data shows that the ~~~*+~~ solids oorrcentration was actually lower in sample HD#2 than in HD#1, with all other para,mtPrc remaining virtually unchanged. This indicates no adverse impacts to the quality of the flow resulting frmn upslope run-off. Field inspections by both CYCC arcs Division personnel have shown no evidence of excessive erosion on either parcel, both of which are bisected by the Hc7nwetnad Ditch. There has been no evidence of elevated levels of cs~r7imant being deposited in the ditch from the upslope parcels, arc] both parcels are well vegetated as discussed. The quality samples collected show no significant impacts upon the quality of the irrigation flow, and it is during the irrigation season that impacts would be most significant aryl most likely to be seen. CYCC feels that the disturbance associated with the install-ation of a replacement silt fence is no longer warranted given the current grand conditions at the site, and that the silt fence should no longer be rerniired given the stability of the reclaimed • parcels. As such, the existing silt fence will be left in place and allowed to naturally degrade. Metal silt fence supports will be removed during the 1993 field season. CYCC intends to attempt collection of a limited number of samples to verify the effectiveness of the current alternative ~~~*+t control maa~~res, specifically rock check filters. Samples will not be subject to the NPDFS limitations for lbtal Suspended Solids aryl Settleable Solids. Certification arcs Ir~spec,~tion The design plans, typical cross-sections, calculation and specifications for treatment facilities, diversion ditches, and culverts are presented in • MR 92-16 2.05-21 (c) Revised 11/04/92